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JP2001245395

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2001245395
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
sound producing apparatus and an apparatus or camera having the sound producing apparatus,
and more particularly to a sound producing apparatus for notifying a status etc. and an
apparatus or camera using the sound producing apparatus.
[0002]
2. Description of the Related Art In the past, many means have been proposed to inform the user
of the operating conditions and conditions of equipment such as cameras, but many means for
giving warnings and notices by sound are also known. . Although a speaker, a buzzer, etc. are
mentioned as a means to emit a warning sound, in the case of small apparatuses, such as a
camera, the small buzzer is often employ | adopted in consideration of the arrangement |
positioning space and the kind of warning sound.
[0003]
As an example in which such a small buzzer is disposed in a camera device, an example in which
a small buzzer is realized by incorporating a piezoelectric sounding body on a flexible printed
wiring board is proposed in Japanese Utility Model Application Publication No. 56-151000.
There is.
05-05-2019
1
[0004]
However, the piezoelectric buzzer proposed in the above-mentioned Japanese Utility Model
Application Publication No. 56-151000 only performs a dedicated function as a means for
emitting a warning sound and the like, and it is difficult to combine it with other applications.
There is a problem in that it is disadvantageous in terms of cost.
[0005]
The present invention has been made in view of such problems, and it is an object of the present
invention to provide a sound producing device that emits an intentional practical sound without
using a sound producing device, and an apparatus or a camera having the sound producing
device.
[0006]
SUMMARY OF THE INVENTION In order to achieve the above object, a first sound producing
apparatus according to the present invention comprises an electromagnetic device for
mechanically driving, and an alternating current or intermittent current to the electromagnetic
device; And control means for producing an electromagnetic device.
[0007]
In order to achieve the above object, a second sound producing apparatus according to the
present invention comprises an electromagnetic device for mechanically driving, an alternating
current or intermittent current to the electromagnetic device, and an ordinary mechanical driving
for the electromagnetic device. And control means for causing the same electromagnetic device
to sound without performing.
[0008]
In order to achieve the above object, a third sound producing apparatus of the present invention
comprises an electromagnetic device for mechanically driving, a driving means for applying a
driving current to the electromagnetic device, and a driving means for driving the driving means
to the electromagnetic device. And control means for applying an alternating current or an
intermittent current to cause the electromagnetic device to emit a sound.
[0009]
In order to achieve the above object, according to a fourth sound producing apparatus of the
present invention, in the first to third sound producing apparatuses, the electromagnetic device is
a motor device.
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[0010]
In order to achieve the above object, according to a fifth sound producing apparatus of the
present invention, in the fourth sound producing apparatus, a rotor of the motor apparatus is
vibrated to produce a sound.
[0011]
In order to achieve the above object, according to a sixth sound producing apparatus of the
present invention, in the fourth sound producing apparatus, a pinion provided on a rotor of the
motor apparatus is vibrated to produce sound.
[0012]
In order to achieve the above object, according to a seventh sound producing apparatus of the
present invention, in the fourth sound producing apparatus, a driven gear engaged with a pinion
provided on a rotor of the motor apparatus is vibrated to produce sound. It features.
[0013]
In order to achieve the above object, according to an eighth sound producing apparatus of the
present invention, in the first to third sound producing apparatuses, the electromagnetic device is
a solenoid device.
[0014]
In order to achieve the above object, a ninth sound producing apparatus of the present invention
is characterized in that in the eighth sound producing apparatus, a plunger moving in the
solenoid device is vibrated to produce sound.
[0015]
In order to achieve the above object, an apparatus having a sound generation device according to
the present invention comprises: an electromagnetic device for performing mechanical drive;
control means for generating alternating current or intermittent current to the electromagnetic
device; It is characterized by having.
[0016]
In order to achieve the above object, a camera having a sound generation device of the present
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invention comprises: an electromagnetic device for performing mechanical drive; control means
for generating alternating current or intermittent current to the electromagnetic device; It is
characterized by having.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below with reference to the drawings.
FIG. 1 is an exploded perspective view showing the main configuration of a driving force
switching apparatus according to a first embodiment of the present invention.
Although the actual arrangement relationship of each component is not necessarily as illustrated,
for convenience of explanation, each component of the driving force switching device is shown
disassembled in the drawing as illustrated.
Moreover, although the driving force switching apparatus of this embodiment consists of many
components, these are divided and demonstrated for every functional block.
[0018]
As shown in FIG. 1, the driving force switching device includes a motor 1 as a driving source of
each driven mechanism provided in a camera as an apparatus to which the driving force
switching device is applied, and rotation of the motor 1 Rotation amount detection mechanism 2
for detecting the amount, a driving force transmission mechanism 3 for transmitting the driving
force of the motor 1 to the worm gear mechanism 4 to be described later, and the driving force
transmission mechanism 3 engaged with the driving force transmission mechanism 3 A worm
gear mechanism 4 that moves, a drive power transmission gear mechanism 5 that is engaged
with the worm gear mechanism 4 and moved so as to be arranged at a plurality of positions as
the worm gear mechanism 4 rotates, and according to the plurality of positions A plurality of
driven gears 6 disposed at positions engageable with the driving force transmission gear
mechanism 5 and transmitting the driving force of the motor 1 to a predetermined driven
system, and the positions of the driving force transmission gear mechanism 5 are defined. Drive
A force transmitting gear position defining means 7, a switching member 8 allowed to displace
the driving force transmission gear position defining means 7, and includes a plunger mechanism
9 which allowed to displace the switching member 8.
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[0019]
Next, the configuration of each functional block will be described individually.
[0020]
The motor 1 is a motor that can rotate in both forward and reverse directions, and is installed
inside a film take-up spool 131 having a hollow cylindrical shape.
Also, a pinion gear 1a is disposed on the output shaft.
And it becomes a drive source of each to-be-driven mechanism arrange | positioned by the
camera to which the said driving force switching apparatus is applied.
[0021]
The motor 1 is driven by the motor driver 211 under the control of the CPU 201 which controls
the entire driving force switching device.
The motor 1 becomes a driving force of various ordinary mechanical drive shown below under
the control of the CPU 201, such as a film feeding mechanism, a zoom up / down mechanism, a
lens barrel setup mechanism, a film cartridge light shielding door opening / closing mechanism
etc. .
[0022]
On the other hand, under the control of the CPU 201, the motor 1 functions as a sound
producing device in addition to the normal mechanical drive.
At this time, the CPU 201 drives the motor driver 211 by a control signal different from that for
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5
performing the normal mechanical drive, whereby the motor 1 performs an electromagnetic
action different from that for performing the normal mechanical drive and vibrates. And
pronounce.
The details will be described later.
[0023]
The motor rotation amount detection mechanism 2 is an encoder for detecting the rotation
amount of the motor 1, and is publicly known which is constituted by a disc 22 having hollow
holes in the periphery integrally provided on an output shaft and a photo interrupter 21. It is a
detection mechanism.
[0024]
The driving force transmission mechanism 3 includes a reduction gear mechanism 33 engaged
with the pinion gear 1a of the motor 1, a sun gear 31 as an output gear of the reduction gear
mechanism 33, a carrier drive gear 35 meshed with the sun gear 31, and A carrier drive gear
train 36 engaged with the carrier drive gear 35 to transmit the drive force to the worm gear
mechanism 4, and an internal gear 34 engaged with the planetary gears 32a and 32b in the
reduction gear mechanism 33 to surround the entire revolution of these planetary gears. And
consists of.
[0025]
The reduction mechanism 33 is disposed on one side of the first disc 33a, and is engaged with
the motor pinion gear 1a to rotate and revolve three first planetary gear groups 32a, and the
other face of the first disc 33a. A gear 33c coaxially disposed on the side, and three second
planetary gear groups 32b disposed on one surface side of the second disc 33b and engaged
with the gear 33c to rotate and revolve, and these planetary gear groups 32a , 32b and an
internal gear 34 that engages with and is a known speed reduction mechanism.
[0026]
The sun gear 31 is provided integrally with the disc 33b on the other surface side of the second
disc 33b, and rotates in either forward or reverse direction according to the rotation of the motor
1.
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In addition, through the said reduction mechanism 33, it rotates by the rotation speed which
reduced from the rotation speed of this motor 1. FIG.
[0027]
Further, a carrier drive gear 35, which bears one end of a drive system of a carrier 51 (to be
described later) in the drive force transmission gear mechanism 5, meshes with the sun gear 31
at all times.
The second worm gear 42 of the worm gear mechanism 4 is engaged with the carrier drive gear
35 via the gear train 36.
[0028]
On the other side of the sun gear 31, there is disposed a drive power transmission rotation
carrier (not shown) for transmitting the drive power to the film cartridge spool drive system and
the film take-up spool drive system.
Therefore, the sun gear 31 not only transmits the driving force to the driving force transmission
gear mechanism 5 (carrier driving system) but also transmits the driving force to the film
cartridge spool driving system and the film winding spool driving system. Play.
[0029]
The worm gear mechanism 4 is provided with a second worm gear 42 meshing with a carrier
drive gear train 36 which is an end portion of the driving force transmitting mechanism 3, and
coaxial with the second worm gear 42 and engaged with the driving force transmitting gear
mechanism 5. And the first worm gear 41.
That is, the first worm gear 41 is rotated by the driving force of the motor 1 supplied through the
driving force transmission mechanism 3 (the reduction mechanism 33, the sun gear 31, the
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carrier driving gear 35, the carrier driving gear train 36). The force is transmitted to the driving
force transmission gear mechanism 5.
That is, when the motor 1 rotates, the first worm gear 41 always rotates.
[0030]
The driving force transmission gear mechanism 5 includes a bevel gear 54 meshing with the first
worm gear 41, and a spur gear 53 coaxially and integrally with the bevel gear 54 on one side of
the bevel gear 54. And a guide rod 55 disposed parallel to the axial direction of the first worm
gear 41, a drive power transmission gear formed of the oblique gear 54 and the flat gear 53, and
rotatably holding the drive power transmission gear. And a carrier 51 which is guided by the rod
55 and moves in parallel with the axial direction of the first worm gear 41.
[0031]
As shown in FIG. 2, the carrier 51 is configured by connecting a first flat plate 51a and a second
flat plate 51b, which are disposed to face each other, with pillars 51c on both sides.
Further, a shaft 51d is disposed substantially at the center between the opposing surfaces of the
two flat plates, and the shaft 51d rotatably supports a driving force transmission gear including
the spur gear 53 and the oblique gear 54.
Furthermore, a friction means having an appropriate frictional force between the helical gear 54
and the second flat plate 51b, that is, a friction for transmitting the moving force of the diagonal
gear 54 to the carrier 51 without preventing the rotation of the helical gear 54. Means 56 are
provided.
[0032]
From one end of the first flat plate 51a, a position defining portion 52, which is an engaging
portion with the drive force transmission gear position defining means 7, is extended.
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The position defining portion 52 has a rectangular shape in which the axial width of the first
worm gear 41 is “t”, and engages with a plurality of position defining portions formed in the
drive force transmission gear position defining means 7 described later.
The details will be described later.
[0033]
The driving force transmission gear composed of the spur gear 53 and the oblique gear 54
rotates with the rotation of the first worm gear 41 as the oblique gear 54 meshes with the first
worm gear 41.
On the other hand, by the rotation of the first worm gear 41, a thrust (moving force) parallel to
the axial direction of the first worm gear 41 is generated in the oblique gear 54.
[0034]
In the present embodiment, as described above, the friction means 56 is disposed between the
oblique gear 54 and the carrier 51 (the second flat plate 51b), whereby the oblique teeth
generated by the rotation of the first worm gear 41. The thrust of the gear 54 is also transmitted
to the carrier 51 as a frictional force, and the carrier 51 is pulled by this frictional force, and the
oblique gear 54 and the flat gear 53 are guided by the guide rod 55 and parallel to the axial
direction of the first worm gear 41 Move to
[0035]
As described above, the carrier 51 in which the spur gear 53 and the oblique gear 54 are
installed moves in parallel with the axial direction of the first worm gear 41 by the driving force
of the motor 1, but in the present embodiment, the carrier 51 It is characterized in that it is
positioned at a plurality of prescribed positions in relation to the drive force transmission gear
position defining means 7 and the plurality of driven gears 6.
The details will be described later.
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[0036]
The driven gear 6 sets three driven gears 61, 62, 63 in the present embodiment.
Each of these driven gears bears one end of the drive system of the driven mechanism shown
below.
[0037]
First driven gear 61: Zoom up / down mechanism Second driven gear 62: Lens barrel setup
mechanism Third driven gear 63: Film cartridge light shielding door opening / closing
mechanism These first driven gear 61, second driven gear 62, The third driven gear 63 is
disposed in order in parallel with the axial direction of the first worm gear 41 in correspondence
with each prescribed position described later.
[0038]
In order to correspond to the plurality of types of driven gears 6, the driving force switching
device of the present embodiment sets the following four as defined positions where the carrier
51 is disposed.
That is, the carrier 51 has a first position: a position where the spur gear 53 meshes with the first
driven gear 61 a second position: a position where the spur gear 53 meshes with the second
driven gear 62 a third position: the spur gear 53 Position 4 meshing with the third driven gear
63: The flat gear 53 is disposed at any one of four or more home positions (initial positions) not
meshing with any of the above driven gears.
[0039]
In each of the above positions, the fourth position, that is, the home position (initial position) is
the position closest to the driving force transmission mechanism 3, and the first, second, and
third positions are arranged in order so as to be further away.
[0040]
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Of the above positions, the first to third positions are transmission positions for applying the
driving force of the motor 1, and the fourth position is a non-transmission position not engaged
with any driven gear 6, The driving force transmission gear mechanism 5 meshes with the worm
gear mechanism 4 and moves in parallel with the axial direction of the worm gear as the worm
gear rotates to transmit the driving force of the motor 1 at the same transmission position. It can
be said that the mechanism is disposed at any of the non-transmission position where no driving
force is applied, and the driven gear 6 transmits the driving force when the driving force
transmission gear mechanism 5 is disposed at the transmission position. It can be said that the
driven gear is disposed at a position meshing with the gear mechanism 5 and receives the driving
force of the motor 1 via the driving force transmission gear mechanism 5.
[0041]
Each prescribed position of the drive force transmission gear mechanism 5 (carrier 51) is defined
by a drive force transmission gear position regulating means 7 described below.
[0042]
The drive force transmission gear position control means 7 has a substantially rectangular
switching lock main body 70 pivotally supported by a shaft 78 disposed parallel to the axial
direction of the first worm gear 41.
The switching lock main body 70 has a plurality of position defining portions (first to fourth
position defining portions 71 to 74) formed on the side facing the carrier 51.
The first to fourth position defining portions 71, 72, 73, 74 correspond to the first position, the
second position, the third position, and the fourth position (home position), respectively. It
engages with a rectangular position defining portion 52 extended from the first flat plate 51a.
[0043]
That is, on the opposite side of the carrier 51 in the switching lock main body 70, the first
position defining portion 71, the second position defining portion 72, and the third position
defining portion 73 are formed in order from the drive force transmitting mechanism 3 side.
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These defining portions 71, 72, 73 are formed as recesses whose axial width of the first worm
gear 41 is about "t + d".
Note that “d” is a minute length with respect to “t”, and is a dimension to such an extent
that the position defining portion 52 has a margin in design and there is no inconvenience in
meshing between gears. That is, the defining portions 71, 72, 73 have a width substantially the
same as that of the position defining portion 52, and are fitted to the position defining portion 52
as the carrier 51 moves. At this time, the movement of the carrier 51 is restricted in the width
direction.
[0044]
Further, the fourth position defining portion 74 is the drive power transmission mechanism 3
side from the end surface 74 a of the switching lock main body 70 on the drive power
transmission mechanism 3 side.
[0045]
That is, the positions at which the rectangular position defining portion 52 of the carrier 51 is
fitted to the first position defining portion 71, the second position defining portion 72 or the
third position defining portion 73 are respectively the first position, the second position or the
third position. A position where one side surface 52a of the position defining unit 52 and one
side surface 74a of the switching lock main body 70 are in contact with each other is set as a
fourth position (home position).
[0046]
A projecting piece 77 for detecting the state of the drive power transmission gear position
regulating means 7 is provided on the side opposite to the opposing surface of the carrier 51 in
the switching lock main body 70.
The projecting piece 77 is combined with a photo interrupter 79 disposed in the vicinity, and
functions as a state detecting means of the drive force transmission gear position defining means
7.
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That is, the photointerrupter 79 can detect the pivoting state of the drive force transmission gear
position regulating means 7 pivoted on the shaft 78.
[0047]
Further, on the lower surface of the switching lock main body 70, a projection 76 for controlling
rotation of the drive force transmission gear position regulating means 7 is provided so as to
extend downward. The projecting piece 76 has a cylindrical shape and is pinched by a bifurcated
arm 83 (described later) of the switching member 8.
[0048]
The switching member 8 is disposed below the drive power transmission gear position defining
means 7, and the switching member main body 81 is pivotally supported in a horizontal plane by
a shaft 81a disposed at the center thereof. Ru. Further, a bifurcated arm 83 extending
substantially parallel to the axial direction of the first worm gear 41 is formed on one side of the
switching member main body 81. Further, in the switching member main body 81, a pin 82
engaged with the plunger mechanism 9 is extended downward to an arm extending in a direction
forming an angle of about 90 degrees with the extending direction of the bifurcated arm 83. It is
done.
[0049]
The plunger mechanism 9 is a known mechanism including a plunger 91 having a coil spring 93
and a solenoid 92. The plunger 91 moves back and forth in parallel with the axial direction of the
first worm gear 41 by the electromagnetic induction of the solenoid 92. The solenoid 92 is
connected to the plunger driver 210 to receive current supply.
[0050]
Further, a circumferential groove is drilled in the base end of the plunger 91, and the pin 82 of
the switching member 8 is fitted in the groove. As a result, the switching member main body 81
is pivoted on the horizontal plane centering on the shaft 81 a as the plunger 91 moves back and
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forth.
[0051]
Here, the states of the drive force transmission gear mechanism 5, the drive force transmission
gear position defining means 7, the switching member 8 and the plunger mechanism 9 in the
initial state will be briefly described with reference to FIGS.
[0052]
In the initial state, no current is supplied to the solenoid 92, so the plunger 91 is disposed at a
position retracted from the solenoid 92 (the position shown in FIG. 3) by the biasing force of the
coil spring 93.
At this time, the switching member main body 81 engaged with the groove of the plunger 91 by
the pin 82 is in a state in which the forked arm 83 is parallel to the axial direction of the first
worm gear 41 as shown.
[0053]
Further, the rotation control protrusion 76 sandwiched by the arm portion 83 is directed in the
drooping direction, and therefore the switching lock main body 70 is also kept horizontal without
being rotated by the shaft 78.
[0054]
Further, the state detection projecting piece 77 in the drive force transmission gear position
defining means 7 is at a position where it intercepts the light signal of the photo interrupter 79,
and hence the photo interrupter 79 is in the off state.
[0055]
Further, the carrier 51 of the driving force transmission gear mechanism 5 is disposed at the
fourth position, that is, the home position.
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At this time, one side surface 52a of the position defining portion 52 abuts on one side surface
74a of the switching lock main body 70, and the side surface 51e of the carrier 51 opposes the
fixing portion 100 of the camera main body with a slight gap. The movement is regulated.
[0056]
Next, the operation of the above-described mechanisms until the carrier 51 moves from the state
(see FIG. 3) in the initial position (fourth position) until it is defined in the first position will be
described with reference to FIGS. Do.
[0057]
When moving the carrier 51, first, a current is supplied from the plunger driver 210 to the
solenoid 92.
When current is supplied to the solenoid 92, the plunger 91 is drawn into the solenoid 92
against the biasing force of the coil spring 93, as shown in FIG.
As a result, the pin 82 is guided in the same direction, so that the switching member body 81
rotates counterclockwise in the figure about the shaft 81a.
[0058]
With the rotation of the switching member main body 81, the rotation control projecting piece
76 sandwiched by the forked arm 83 is rotated upward. That is, the switching lock main body 70
pivots upward about the shaft 78. And thereby, the carrier 51 becomes movable.
[0059]
In this state, that is, when the switching lock main body 70 is rotated upward, when the first
worm gear 41 is rotated in a predetermined direction, the carrier 51 moves in the direction of
the arrow in the drawing as shown in FIG. FIG. 4 shows a state in which the carrier 51 is slightly
moved by the rotation of the first worm gear 41. In the drawing, the tip of the position defining
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portion 52 of the carrier 51 is located below the switching lock main body 70.
[0060]
Further, the state detection projecting piece 77 is retracted from the position at which the light
signal of the photo interrupter 79 is blocked, whereby the photo interrupter 79 is turned on.
[0061]
When the first worm gear 41 is further rotated from the state shown in FIG. 4, the carrier 51
further moves in the direction of the arrow in FIG. 4.
Then, when the position defining portion 52 of the carrier 51 reaches the vicinity of the first
position defining portion 71 of the switching lock main body 70 as shown in FIG. 5 (the method
of detecting this will be described later) Stop the current supply.
[0062]
When the current supply to the solenoid 92 is stopped, the plunger 91 moves to the retracted
position by the biasing force of the coil spring 93. Thereby, the switching member main body 81
engaged with the groove of the plunger 91 by the pin 82 rotates clockwise in the drawing about
the shaft 81 a and the forked arm 83 is parallel to the axial direction of the first worm gear 41
again. Displacing towards the initial state. Furthermore, the rotation control projection 76
sandwiched by the arm 83 is also turned downward again, and accordingly, the switching lock
main body 70 is also rotated by the shaft 78 so as to return to the horizontal state.
[0063]
However, since the position defining portion 52 has not yet reached the position where it is fitted
to the first position defining portion 71, the switching lock main body 70 is in a state where one
end thereof is mounted on the upper surface of the position defining portion 52. Therefore, the
switching lock main body 70 is in the state of returning to the initial state as soon as the position
defining portion 52 is fitted to the first position defining portion 71.
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[0064]
Further, in the state shown in FIG. 5, the state detection projecting piece 77 does not return to
the position where the optical signal of the photo interrupter 79 is blocked, and the photo
interrupter 79 remains in the on state.
[0065]
Thereafter, when the carrier 51 further moves and reaches the position where the position
defining portion 52 is fitted to the first position defining portion 71 as shown in FIG. 6, the
switching lock main body 70 is biased by the coil spring 93 of the plunger mechanism 9. Thus,
the first position defining portion 71 and the position defining portion 52 are engaged with each
other.
And, this state is the first position. At this time, the plunger mechanism 9, the switching member
8, and the drive force transmission gear position control means 7 are in the same state as the
initial state.
[0066]
When the carrier 51 reaches the first position shown in FIG. 6, the spur gear 53 provided in the
carrier 51 meshes with the first driven gear 61. Therefore, when the first worm gear 41 rotates
in this state, the driving force of the motor 1 can be transmitted to the first driven gear 61 via the
spur gear 53. Further, at this time, since the movement of the carrier 51 is restricted by the
engagement of the first position defining portion 71 and the position defining portion 52, the
rotational power of the first worm gear 41 only drives the first driven gear 61. used.
[0067]
Next, an electrical circuit configuration in the driving force switching device of the present
embodiment will be described.
[0068]
FIG. 7 is a block circuit diagram showing an electrical configuration of the driving force switching
device of the present embodiment.
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[0069]
In the drawing, a CPU as control means 201 is a control unit which controls control of all circuits
in the camera to which the driving force switching device is applied, in addition to the circuits in
the driving force switching device.
Further, the camera includes a battery 202, and the CPU 201, the motor 1 and the like use the
battery 202 as a power supply.
Further, a main switch 203 and a release switch 204 are connected to the CPU 201.
[0070]
Further, the CPU 201 is connected to the photo interrupter 21 for detecting the rotation of the
motor 1 and the photo interrupter 79 for detecting the state of the drive power transmission
gear position defining means 7, and inputs signals from these photo interrupters. The LEDs in the
photo interrupters 21 and 79 are controlled to emit light by drive transistors 206 and 207
controlled by the CPU 201.
[0071]
On the other hand, a motor driver 211 and a plunger driver 210 (driving means) which are
circuits for driving the motor 1 and the solenoid 92 are connected to the CPU 201, respectively.
As a result, the drive of the motor 1 and the solenoid 92 is controlled by the CPU 201.
[0072]
Here, the configuration of the motor driver 211 (driving means) will be described with reference
to FIG. FIG. 8 is a block circuit diagram showing an electrical configuration of the motor driver
and its peripheral portion in the driving force switching device of the present embodiment.
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[0073]
As shown in the figure, the motor driver 211 includes four drive elements, transistors Tr1, Tr2,
Tr3 and Tr4, and drives the motor 1. The collectors of the transistors Tr1 and Tr4 are connected
to the positive electrode of the battery 202, and the emitters of the transistors Tr1 and Tr4 are
connected to both ends of the motor 1 and to the collectors of the transistors Tr3 and Tr2,
respectively. The emitters of the transistors Tr3 and Tr2 are both grounded. Further, the bases of
the respective transistors Tr1, Tr2, Tr3 and Tr4 are connected to the CPU 201, respectively, and
are controlled by a control signal from the CPU 201. The motor 1 is thereby driven.
[0074]
Next, the main operation of the camera to which the driving force switching device of this
embodiment having such a configuration is applied will be described.
[0075]
FIG. 9 is a flow chart showing the main operation of the camera to which the driving force
switching device of this embodiment is applied.
[0076]
First, after executing a predetermined initialization process (step S101), the CPU 201 detects the
pressing of the release switch 204 (step S102).
Here, when the release switch 204 is pressed, distance measurement processing is performed
(step S103), and whether or not distance measurement is impossible (step S104), and whether or
not it is a proper exposure value (step S105) Determine
[0077]
If there is no problem in both distance measurement and proper exposure in the above steps
S104 and S105, the CPU 201 appropriately performs exposure processing (step S106), and
thereafter sends a predetermined drive signal to the motor driver 211 to drive the motor 1 The
film is driven to wind up one frame (step S107).
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[0078]
At this time, the CPU 201 sends a normal drive signal to each of the transistor transistors Tr1,
Tr2, Tr3 and Tr4 of the motor driver 211.
As a result, the motor 1 performs a normal rotation operation, and the transmission force is
transmitted to the film winding mechanism through the above-described drive switching
mechanisms and the like.
[0079]
After the winding operation in step S107, if there is no operation action for a fixed time (step
S108), the CPU 201 is in a standby state, and performs a necessary process when a
predetermined operation is performed (step S109), and returns to the step S102. .
[0080]
If the release switch 204 is not pressed in step S102, the CPU 201 detects the zoom button (up,
down) operation (step S110) or the rewind button operation (step S112).
Here, when the zoom button is pressed, predetermined zoom up or zoom down processing is
performed (step S111), and when the rewind button is pressed, predetermined rewind processing
is performed (step S113).
[0081]
In steps S111 and S113 as well, the CPU 201 sends a normal drive signal to each of the
transistors Tr1, Tr2, Tr3, and Tr4 of the motor driver 211.
As a result, the motor 1 performs a normal rotation operation, and the driving force of the motor
1 is appropriately transmitted to a predetermined driven mechanism through the above-
05-05-2019
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described drive switching mechanisms and the like.
[0082]
On the other hand, if it is determined in step S104 and step S105 that distance measurement is
impossible, or if the exposure value is not appropriate, the CPU 201 performs "sound generation
processing".
[0083]
In the sound generation process in the first embodiment, the CPU 201 sends a control signal
(sound generation control signal) different from normal driving to the transistors Tr1 and Tr2 of
the motor driver 211.
[0084]
For example, as a frequency applied to a motor driver, about 1 kHz to 2 kHz is desirable.
The sound due to the vibration at this frequency is not inferior to the sound generated from the
general piezoelectric element type speaker or the piezoelectric buzzer, and is a sound which
functions sufficiently as a notification means.
The frequency is of course not limited to this, and may be lower, for example, without any
problem in practice, and a frequency according to the device may be selected.
[0085]
In the first embodiment, the tone generation control signal is devised, and a special pulse signal
is applied to the transistors Tr1 and Tr2. When this pulse control signal is applied, an
electromagnetic action different from that in the normal rotational operation acts between the
rotor and the stator of the motor 1. That is, at this time, the rotor of the motor 1 does not rotate
as usual, and swings (micro-reciprocally vibrates) by an amount corresponding to the backlash of
the gear train connected to the pinion gear. This causes the rotor to vibrate in the audible sound
band. A sound (alert sound) like a buzzer sound is generated from the motor 1. In the present
embodiment, the above-described control is performed so that the warning sound is an
05-05-2019
21
intentional practical sound, that is, a sound that can be clearly recognized as a warning sound,
unlike an abnormal sound generated due to a malfunction of a device or the like. Set the signal.
The specific pronunciation sequence will be described in detail later.
[0086]
Next, movement control of the carrier 51 in the driving force switching device of the present
embodiment having such a configuration will be described with reference to a flowchart. First, a
control procedure until the carrier 51 moves from the initial position (fourth position) to the first
position will be described with reference to the flowchart shown in FIG.
[0087]
The CPU 201 first detects whether or not the carrier 51 is disposed at the initial position (fourth
position) by detection means (not shown) (step S1). Here, if the carrier 51 is not at the initial
position, the CPU 201 drives the motor driver 211 to rotate the motor 1 in the forward direction
(clockwise direction) and arrange the carrier 51 at the fourth position (step S2). That is, the
carrier 51 abuts the side surface 51 e to the fixing member 100 to set an initial position.
[0088]
When the carrier 51 is placed at the initial position in step S1, the CPU 201 turns off the motor 1
(step S3) and drives the plunger driver 210 to turn on the solenoid 92 (step S4). As a result, the
plunger 91 is drawn into the solenoid 92 as described above, and the engagement pin 82 is
guided in the same direction (see FIG. 4). Further, the switching member main body 81 rotates in
the counterclockwise direction around the shaft 81a in the figure, and as a result, the rotation
control projecting piece 76 sandwiched by the forked arm 83 is rotated upward and the
switching lock The main body 70 pivots upward about the shaft 78. Thereby, the carrier 51
becomes movable.
[0089]
Thereafter, the CPU 201 rotates the motor 1 in the reverse direction (counterclockwise direction)
05-05-2019
22
(step S5). Thus, the carrier 51 moves in the direction of the arrow in FIG. Further, the CPU 201
detects the amount of rotation of the motor 1 based on the pulse signal sent from the photo
interrupter 21 for detecting the rotation of the motor 1. Then, the CPU 201 determines whether
this pulse signal has reached a predetermined number of pulses, that is, the flat gear 53 installed
in the carrier 51 is engaged with the first driven gear 61 (zoom up and down gear) as shown in
FIG. It is determined whether it has reached the vicinity of the matching first position (step S6).
[0090]
Here, when the pulse signal from the photo interrupter 21 reaches a predetermined value, the
CPU 201 stops the current supply to the solenoid 92 (step S7). At this time, as shown in FIG. 5,
the switching lock main body 70 gets on the position defining portion 52. The value of the
predetermined number of pulses is recorded in advance in a recording unit (not shown), and the
CPU 201 can read out the value as needed.
[0091]
Next, the CPU 201 detects the state of the switching lock main body 70 by the photo interrupter
79 (step S8). Here, when the CPU 201 detects that the photo interrupter 79 is switched from the
on state to the off state, as described above, the position defining unit 52 is fitted to the first
position defining unit 71 from the above-mentioned riding condition. That is, it is determined
that the carrier 51 has reached the first position. Thereafter, the CPU 201 turns off the motor 1
(step S9), and ends the movement routine to the first position.
[0092]
The following briefly describes the zoom operation sequence. When the CPU 201 confirms the
state where the carrier 51 is defined at the first position (see FIG. 6) as described above, the
motor 201 rotates the motor 1 in a predetermined direction in response to the up or down
operation of the zoom mechanism. As a result, the first worm gear 41 is rotated via the reduction
mechanism 33, the sun gear 31, the carrier drive gear 35, and the carrier drive gear train 36,
and further through the oblique gear 54 and the flat gear 53. Rotate. A zoom drive mechanism
(not shown) is connected to the first driven gear 61 and below, and as a result, the zoom drive
mechanism is driven by the driving force of the motor 1.
05-05-2019
23
[0093]
Next, a control procedure until the carrier 51 moves from the initial position (fourth position) to
the second position will be described with reference to the flowchart shown in FIG. The basic
control procedure is the same as the movement routine to the first position shown in FIG. 10, so
the description here will be simplified.
[0094]
As described above, the CPU 201 confirms that the carrier 51 is disposed at the initial position
(step S11, step S12), and when this confirmation is made, the motor 1 is turned off (step S13),
and the solenoid 92 is turned on (step S13). Step S14). As a result, the switching lock main body
70 pivots upward about the shaft 78 as described above, and the carrier 51 becomes movable.
[0095]
Thereafter, the CPU 201 rotates the motor 1 in the reverse direction (counterclockwise) (step
S15), and the pulse signal from the photo interrupter 21 has a predetermined number of pulses,
that is, the carrier 51 is positioned near the second position defining unit 72. It is determined
whether the number of pulses has reached (step S16).
[0096]
Here, when the pulse signal from the photo interrupter 21 reaches a predetermined value, the
CPU 201 stops the current supply to the solenoid 92 (step S7) and detects that the photo
interrupter 79 is switched from the on state to the off state. (Step S18), it is determined that the
carrier 51 has reached the second position.
At this time, as shown in FIG. 12, the movement of the carrier 51 is restricted in a state in which
the position defining unit 52 is fitted to the second position defining unit 72.
[0097]
Thereafter, the CPU 201 turns off the motor 1 (step S19), and ends the movement routine to the
05-05-2019
24
second position.
[0098]
The sequence of the lens barrel setup operation will be briefly described below.
When the CPU 201 confirms the state (see FIG. 12) in which the carrier 51 is defined at the
second position as described above, the motor 201 rotates the motor 1 in a predetermined
direction so as to extend the lens barrel from the retracted position to the extended position. As a
result, the first worm gear 41 is rotated via the reduction mechanism 33, the sun gear 31, the
carrier drive gear 35, and the carrier drive gear train 36, and further through the oblique gear
54 and the flat gear 53 the second driven gear 62. Rotate. A lens barrel driving mechanism (not
shown) is connected to the second driven gear 62 and below. As a result, the lens barrel driving
mechanism is driven by the driving force of the motor 1 and the lens barrel is extended from the
retracted position to the extended position. Be
[0099]
Next, a control procedure until the carrier 51 moves from the initial position (fourth position) to
the third position will be described with reference to the flowchart shown in FIG. The basic
control procedure is the same as the movement routine to the first position shown in FIG. 10, so
the description here will be simplified.
[0100]
As described above, the CPU 201 confirms that the carrier 51 is arranged at the initial position
(step S21, step S22), and when this confirmation is made, the motor 1 is turned off (step S23)
and the solenoid 92 is turned on (step S23). Step S24). As a result, the switching lock main body
70 pivots upward about the shaft 78 as described above, and the carrier 51 becomes movable.
[0101]
Thereafter, the CPU 201 rotates the motor 1 in the reverse direction (counterclockwise) (step
S25), and the pulse signal from the photo interrupter 21 has a predetermined number of pulses,
05-05-2019
25
that is, the carrier 51 is positioned near the third position defining portion 73. It is determined
whether the number of pulses has reached (step S26).
[0102]
Here, when the pulse signal from the photo interrupter 21 reaches a predetermined value, the
CPU 201 stops the current supply to the solenoid 92 (step S27) and detects that the photo
interrupter 79 is switched from the on state to the off state. (Step S28), it is determined that the
carrier 51 has reached the third position.
At this time, as shown in FIG. 14, the movement of the carrier 51 is restricted in a state in which
the position defining portion 52 is fitted to the third position defining portion 73.
[0103]
Thereafter, the CPU 201 turns off the motor 1 (step S29), and ends the movement routine to the
third position.
[0104]
The sequence of the film cartridge light blocking door opening / closing operation will be briefly
described below.
When the CPU 201 confirms the state (see FIG. 14) in which the carrier 51 is defined at the third
position as described above, the motor 201 rotates the motor 1 in a predetermined direction
(reverse direction) to open the film cartridge light blocking door. As a result, the first worm gear
41 rotates via the reduction gear mechanism 33, the sun gear F31, the carrier drive gear 35, and
the carrier drive gear train 36, and further passes through the oblique gear 54 and the flat gear
53 to produce the third driven gear 63. Rotate. A film cartridge light shielding door opening /
closing mechanism (not shown) is connected to the third driven gear 63 and below. As a result,
the film cartridge light shielding door opening / closing mechanism is driven by the driving force
of the motor 1 and the film cartridge light shielding door is opened. Be done.
[0105]
05-05-2019
26
Next, FIG. 15 shows a control procedure from the third position to the fourth position (home
position) after the carrier 51 is disposed at the third position according to the control procedure
of FIG. 13 and performs predetermined driving. It demonstrates with reference to the flowchart
shown.
[0106]
The CPU 201 rotates the motor 1 in the reverse direction to open the film cartridge light
shielding door (step S31), and further confirms that the film cartridge light shielding door is
opened by detecting means (not shown) (step S32). The motor 1 is stopped (step S33).
Thereafter, the plunger driver 210 is driven to turn on the son 92 (step S34). As a result, the
plunger 91 is again sucked into the solenoid 92 and the engagement pin 82 is guided in the
same direction, and further, the switching member main body 81 is rotated about the shaft 81a,
and the switching lock main body 70 is centered on the shaft 78. Rotate upward. As a result, the
carrier 51 becomes movable again.
[0107]
Thereafter, the CPU 201 rotates the motor 1 in the forward direction (step S35). Thus, the carrier
51 moves toward the fourth position. Further, the CPU 201 detects the amount of rotation of the
motor 1 based on the pulse signal sent from the rotation detection photo interrupter 21 of the
motor 1, and determines whether this pulse signal has reached a predetermined number of
pulses, that is, the carrier 51 is shown in FIG. It is determined whether the position near the four
positions (home position) has been reached (step S36).
[0108]
Here, when the pulse signal from the photo interrupter 21 reaches a predetermined value, the
CPU 201 stops the current supply to the solenoid 92 (step S37). The value of the predetermined
number of pulses is recorded in advance in a recording unit (not shown) in the same manner as
described above, and the CPU 201 can read out this value as needed.
05-05-2019
27
[0109]
Thereafter, the CPU 201 detects the state of the switching lock main body 70 by the photo
interrupter 79 (step S38). Here, when detecting that the photo interrupter 79 has been switched
from the on state to the off state, the CPU 201 determines that the position defining unit 52 has
reached the fourth position. In response to this, the CPU 201 turns off the motor 1 (step S39),
and ends the movement routine to the fourth position.
[0110]
Of course, it is also possible to move the carrier from one arbitrary position to another arbitrary
position by using the above-mentioned technique, but the detailed explanation here is omitted.
[0111]
As described above, according to the driving force switching device of the present embodiment, it
is possible to provide a compact driving force switching device while being able to switch and
use a plurality of driving force transmission destinations.
[0112]
Next, the “sound generation process” in step S120 (see FIG. 9) will be described with reference
to the flowchart shown in FIG.
[0113]
FIG. 16 is a flow chart showing a subroutine of “sound generation processing” in the driving
force switching device according to the present embodiment.
[0114]
When the "sound generation processing" routine of step S120 is called, the CPU 201 starts
clocking with an internal timer (buzzer timer) (step S201), and until the predetermined time has
elapsed (step S202), the following processing is performed I do.
[0115]
The CPU 201 first turns on the transistor Tr1 and the transistor Tr2 among the four driving
05-05-2019
28
elements of the motor driver 211 (step S203).
このとき、トランジスTr3、トランジスTr4はオフしている。
As a result, the current i1 flows through the motor 1 in the direction shown in FIG.
[0116]
The CPU 201 starts clocking of the first timer simultaneously with turning on of the transistor
Tr1 and the transistor Tr2 (step S204).
Then, when the first timer elapses for a predetermined time (step S205), the timer is initialized
(step S206), and the transistor Tr1 and the transistor Tr2 are turned off (step S207).
As a result, the current i1 flowing to the motor 1 is also turned off and falls.
The first timer defines the time when the current i1 is applied to the motor 1, ie, the on time.
[0117]
Thereafter, the CPU 201 starts clocking of the second timer (step S208), and when the second
timer elapses a predetermined time (step S209), initializes the timer (step S210), and returns to
step S202. The second timer defines a time when the current i1 is not applied to the motor 1,
that is, an off time.
[0118]
The CPU 201 repeats the steps S202 to S210 until the timer started in the step S201 has passed
a predetermined time. As a result, a predetermined intermittent current (pulse current) is applied
to the motor 1. By appropriately setting the cycle of the intermittent current, the rotor of the
05-05-2019
29
motor 1 is in the audible period as described above. Vibrate. This vibration is emitted to the
outside of the device as a sound and is recognized as a warning sound.
[0119]
In step S202, when the buzzer timer started in step S201 has passed a predetermined time, the
CPU 201 stops the buzzer timer (step S211), and initializes the buzzer timer (step S212). As a
result, the supply of the intermittent current applied to the motor 1 is stopped, and the motor 1
stops its vibration and the sound generation operation also stops.
[0120]
As described above, according to the first embodiment, the motor can be made to function as a
sound generation device by giving a special control signal to a motor that carries out a normal
mechanical drive such as film feeding. It is possible to provide a camera provided with a sound
generation device that emits an intentional practical sound (warning sound) without using a
dedicated device that emits a warning sound or the like.
[0121]
In the above description, although only the rotor of the motor 1 functions as a sounding body, it
has been described that sounding energy is not only due to the vibration of the rotor, but also the
solenoid portion in the rotor, the solenoid portion in the stator, etc. It is considered that the
portion in the vicinity of the rotor mechanically vibrates minutely and such vibration is
comprehensively emitted as a warning sound.
[0122]
Further, not only the vibration in the vicinity of the rotor, but also the pinion gear of the motor
shaft and the whole gear train may slightly rotate and vibrate, and this vibration can be used as a
warning sound.
This can adjust the sound generator (oscillator) or the sound generation itself by adjusting the
period of the control signal applied to the motor driver 211 or the driving force of the transistor.
05-05-2019
30
[0123]
Next, a second embodiment of the present invention will be described.
The second embodiment is characterized in that the control signal applied to the motor 1 (motor
driver 211) in the first embodiment is further devised to vibrate the motor 1 more efficiently.
Therefore, since the configuration is the same as that of the first embodiment, the detailed
description here is omitted.
[0124]
The operation of the "sound generation process" in the second embodiment will be described
below. Also in the second embodiment, the main operation is as shown in FIG. 9. Hereinafter, the
“sound generation process” in step S120 will be described with reference to the flowchart
shown in FIG.
[0125]
If it is determined in step S104 and step S105 in FIG. 9 that distance measurement is impossible,
or if the exposure value is not appropriate, the CPU 201 performs “sound generation
processing”.
[0126]
In the sound generation process in the second embodiment, the CPU 201 controls not only the
transistors Tr1 and Tr2 of the motor driver 211 but also the transistors Tr3 and Tr4 with control
signals (sound generation control signals) different from normal driving. Send out).
[0127]
Also in the second embodiment, this sound generation control signal is elaborated, and a special
pulse signal is applied to the transistors Tr1, Tr2, Tr3, and Tr4.
When this pulse control signal is applied, an electromagnetic action different from that in the
05-05-2019
31
normal rotational operation acts between the rotor and the stator of the motor 1.
That is, at this time, the rotor of the motor 1 does not rotate as usual, and swings by an amount
corresponding to the backlash of the gear train connected to the pinion gear. This causes the
rotor to vibrate in the audible sound band. A sound (alert sound) like a buzzer sound is generated
from the motor 1.
[0128]
Specifically, when the "sound generation process" routine of step S120 is called, the CPU 201
starts clocking with an internal timer (buzzer timer) (step S301), and this timer continues until a
predetermined time elapses (step S302). Perform the following processing.
[0129]
The CPU 201 first turns on the transistor Tr1 and the transistor Tr2 among the four driving
elements of the motor driver 211 (step S303).
このとき、トランジスTr3、トランジスTr4はオフしている。 As a result, the current i1
flows through the motor 1 in the direction shown in FIG.
[0130]
The CPU 201 starts clocking of the first timer simultaneously with the turning on of the
transistor Tr1 and the transistor Tr2 (step S304). Then, when the first timer has passed a
predetermined time (step S305), the timer is initialized (step S306), and the transistors Tr1 and
Tr2 are turned off (step S307). As a result, the current i1 flowing to the motor 1 is turned off and
falls. The first timer defines the time during which the current i1 is applied to the motor 1.
[0131]
Thereafter, the CPU 201 starts clocking of the second timer (step S308), and when the second
timer elapses a predetermined time (step S309), initializes the timer (step S310). The second
05-05-2019
32
timer defines a time from when the current i1 is not applied to the motor 1 until when the
current i2 is applied next.
[0132]
After the step S310, the CPU 201 turns on the transistor Tr3 and the transistor Tr4 among the
four driving elements of the motor driver 211 (step S310). このとき、トランジスTr1、トラン
ジスTr2はオフしている。 As a result, current i2 (current in the direction opposite to current
i1) flows through the motor 1 in the direction shown in FIG.
[0133]
The CPU 201 starts clocking of the third timer simultaneously with the turning on of the
transistor Tr3 and the transistor Tr4 (step S311). Then, when the third timer has passed a
predetermined time (step S312), the timer is initialized (step S313), and the transistor Tr3 and
the transistor Tr4 are turned off (step S314). As a result, the current i2 flowing to the motor 1 is
turned off. The third timer defines the time during which the current i2 is applied to the motor 1.
[0134]
After that, the CPU 201 starts clocking of a fourth timer (step S315), and when the fourth timer
elapses a predetermined time (step S316), initializes the timer (step S317) and returns to step
S302. The fourth timer defines a time from when the current i2 is not applied to the motor 1
until when the current i1 is applied next.
[0135]
The CPU 201 repeats the steps S302 to S317 until the timer started in the step S301 has passed
a predetermined time. As a result, a predetermined alternating current (an alternating current
due to the current i1 and the current i2 whose flow directions are opposite to each other) is
applied to the motor 1. By appropriately setting the cycle of the alternating current, The rotor
vibrates in a period of the audible band. This vibration is emitted to the outside of the device as a
05-05-2019
33
sound and is recognized as a warning sound.
[0136]
In step S302, when the buzzer timer started in step S301 has passed a predetermined time, the
CPU 201 stops the buzzer timer (step S318) and initializes the buzzer timer (step S319). As a
result, the supply of the alternating current applied to the motor 1 is stopped, and the motor 1
stops its vibration and the sound generation operation also stops.
[0137]
As described above, according to the second embodiment, as in the first embodiment, the motor
is provided by supplying a special control signal to a motor that is responsible for normal
mechanical drive such as film feeding. It is possible to provide a camera that can function as a
sounding device and that has a sounding device that emits an intentional practical sound
(warning sound) without using a dedicated device that emits a warning sound or the like.
[0138]
Also in the second embodiment, although only the rotor of the motor 1 functions as a sounding
body, as described above, the sounding energy is not only due to the vibration of the rotor but
also the solenoid portion of the rotor It is considered that mechanical minute vibration is
generated mechanically in the vicinity of the rotor, such as a solenoid portion in the stator or the
like, and such vibration is comprehensively emitted as a warning sound.
Further, not only the vibration in the vicinity of the rotor, but also the pinion gear of the motor
shaft and the whole gear train may slightly rotate and vibrate, and this vibration can be used as a
warning sound.
[0139]
Further, by driving with the alternating current, the motor 1 can be vibrated more efficiently than
in the first embodiment, and a large warning sound can be obtained.
[0140]
05-05-2019
34
Next, a third embodiment of the present invention will be described.
While the first and second embodiments use the motor 1 as a sound generation device, the third
embodiment is characterized in that a plunger mechanism 9 is used as a sound generation device
that emits a warning sound or the like. . The other configurations are the same as those of the
first and second embodiments, and therefore only the differences will be mentioned here.
[0141]
In the driving force switching device of the third embodiment, the plunger mechanism 9 (see FIG.
1) is driven by the plunger driver 210 under the control of the CPU 201 which controls the
entire driving force switching device. The plunger mechanism 9 becomes a driving force of
normal mechanical drive, that is, drive of the drive force transmission gear control mechanism 7,
the switching member 8 and the like under the control of the CPU 201.
[0142]
On the other hand, under the control of the CPU 201, the plunger mechanism 9 functions as a
sound producing device in addition to the normal mechanical drive. At this time, the CPU 201
drives the plunger driver 210 by a control signal different from that for performing normal
mechanical drive, whereby the plunger mechanism 9 performs an electromagnetic action
different from that for performing normal mechanical drive. Vibrate and pronounce. The details
will be described later.
[0143]
The operation of the “sound generation process” in the third embodiment will be described
below. Also in the third embodiment, the main operation is as shown in FIG. 9. Hereinafter, the
“sound generation process” in step S120 will be described with reference to the flowchart
shown in FIG.
05-05-2019
35
[0144]
If it is determined in step S104 and step S105 in FIG. 9 that distance measurement is impossible
or the exposure value is not appropriate, the "sound generation process" routine of step S120 is
called. The CPU 201 starts clocking with an internal timer (buzzer timer) (step S401), and
performs the following processing until a predetermined time has elapsed (step S402).
[0145]
First, the CPU 201 sends a control signal (sound generation control signal) different from normal
driving to the plunger driver 210.
[0146]
For example, as a frequency applied to a plunger driver, about 1 kHz to 2 kHz is desirable.
The sound due to the vibration at this frequency is not inferior to the sound generated from the
general piezoelectric element type speaker or the piezoelectric buzzer, and is a sound which
functions sufficiently as a notification means. The frequency is of course not limited to this, and
may be lower, for example, without any problem in practice, and a frequency according to the
device may be selected.
[0147]
The plunger driver 210 turns on and off the plunger mechanism 9 at a cycle different from
normal when receiving this control signal. First, at this time, the on current is applied to the
solenoid 92 (step S403). Then, the CPU 201 starts clocking of the first timer simultaneously with
turning on of the plunger mechanism 9 (step S404). When the first timer has passed a
predetermined time (step S405), the timer is initialized (step S406) and the plunger mechanism 9
is turned off (step S407).
[0148]
The first timer defines the time during which current is applied to the solenoid 92 of the plunger
mechanism 9.
05-05-2019
36
[0149]
Thereafter, the CPU 201 starts clocking of the second timer (step S408), and when the second
timer elapses a predetermined time (step S409), initializes the timer (step S410), and returns to
step S402.
The second timer defines a time during which no current is applied to the solenoid 92.
[0150]
The CPU 201 repeats the steps S402 to S410 until the timer started in the step S401 has passed
a predetermined time. As a result, a predetermined on-off current is applied to the solenoid 92 of
the plunger mechanism 9. By appropriately setting the period of the on-off current, the plunger
91 of the plunger mechanism 9 vibrates in the period of the audible zone. . As a result, a sound
such as a buzzer (warning sound) is generated from the plunger mechanism 9 as well. In the
present embodiment, the above-described control is performed so that the warning sound is an
intentional practical sound, that is, a sound that can be clearly recognized as a warning sound,
unlike an abnormal sound generated due to a malfunction of a device or the like. It suffices to set
the signal.
[0151]
In step S402, when the buzzer timer started in step S401 has passed a predetermined time, the
CPU 201 stops the buzzer timer (step S411) and initializes the buzzer timer (step S412). As a
result, the supply of the intermittent current applied to the solenoid 92 of the plunger
mechanism 9 is stopped, and the plunger 91 stops its vibration to stop the sound generation
operation.
[0152]
As described above, also according to the third embodiment, as in the first and second
embodiments, by providing a special control signal to the plunger mechanism responsible for
normal mechanical driving, the plunger mechanism Can be functioned as a sound generation
05-05-2019
37
device, and a camera provided with a sound generation device that emits an intentional practical
sound (warning sound) can be provided without using a dedicated device that emits a warning
sound or the like.
[0153]
As described above, in the present invention, the motor and the plunger as the electromagnetic
device do not drive other parts, in other words, they themselves become the sounding body
without performing normal mechanical driving.
[0154]
[Appendix] According to the embodiment of the present invention as described above, the
following configuration can be obtained.
That is, (1) An apparatus comprising a sound generation device characterized by comprising: an
electromagnetic device for mechanically driving; and control means for applying alternating or
intermittent current to the electromagnetic device to cause the electromagnetic device to emit
sound. .
[0155]
(2) An electromagnetic device for mechanically driving, and control means for applying
alternating or intermittent current to the electromagnetic device and for causing the
electromagnetic device to emit sound without causing the electromagnetic device to perform
normal mechanical driving An apparatus having a sound generation device characterized in that
it comprises.
[0156]
(3) An electromagnetic device for mechanically driving, driving means for applying a driving
current to the electromagnetic device, and driving the driving means to apply alternating current
or intermittent current to the electromagnetic device to produce a sound generating device for
the electromagnetic device An apparatus having a sound generation device comprising:
[0157]
(4) An apparatus including the sound generation device according to any one of (1) to (3),
05-05-2019
38
wherein the electromagnetic device is a motor device.
[0158]
(5) A device having the sound generation device according to (4), characterized in that the rotor
in the motor device is vibrated to generate sound.
[0159]
(6) A device having the sound generation device according to (4), characterized in that the pinion
provided on the rotor of the motor device is vibrated to generate sound.
[0160]
(7) A device including the sound generation device according to (4), wherein a driven gear
engaged with a pinion provided on a rotor in the motor device is vibrated to generate a sound.
[0161]
(8) An apparatus including the sound generation device according to any one of (1) to (3),
wherein the electromagnetic device is a solenoid device.
[0162]
(9) A device having the sound generation device according to (8), wherein the plunger moving in
the solenoid device is vibrated to generate a sound.
[0163]
(10) A camera comprising a sound generating device comprising: an electromagnetic device for
mechanically driving; and control means for applying alternating or intermittent current to the
electromagnetic device to cause the electromagnetic device to emit sound.
[0164]
(11) An electromagnetic device for performing mechanical driving, and control means for
applying alternating or intermittent current to the electromagnetic device and causing the
electromagnetic device to emit sound without causing the electromagnetic device to perform
normal mechanical driving What is claimed is: 1. A camera having a sound-producing device
characterized in comprising.
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39
[0165]
(12) An electromagnetic device for mechanically driving, driving means for applying a driving
current to the electromagnetic device, and driving the driving means to apply alternating current
or intermittent current to the electromagnetic device to produce a sound generating device for
the electromagnetic device A camera having a sound generation device, characterized by
comprising:
[0166]
(13) A camera having the sound generation device according to any one of (10) to (12), wherein
the electromagnetic device is a motor device.
[0167]
(14) A camera having the sound generation device according to (13), characterized in that the
rotor in the motor device is vibrated to generate sound.
[0168]
(15) A camera having the sound-producing device according to (13), characterized in that the
pinion provided on the rotor of the motor device is vibrated to produce sound.
[0169]
(16) A camera having a sound-producing device according to (13), characterized in that the
driven gear meshing with the pinion provided on the rotor in the motor device is vibrated to
produce sound.
[0170]
(17) A camera having the sound generation device according to any one of (10) to (12), wherein
the electromagnetic device is a solenoid device.
[0171]
(18) A camera having a sound-producing device according to (17), characterized in that the
plunger moving in the solenoid device is vibrated to produce sound.
[0172]
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40
As described above, according to the present invention, it is possible to provide a sound
producing device that emits intentional practical sounds without using a sound producing device,
and an apparatus or a camera having the sound producing device.
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41
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