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JP2011160325

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2011160325
An object of the present invention is to improve the assemblability of a speaker and a
microphone and to secure both of the sound insulation properties with a small number of parts.
A holding member (104) is integrally formed of an elastic member, and holds a speaker (102a)
and microphones (102bL, 102bR) integrally. When the FPC 102, the sheet metal 103, and the
holding member 104 are assembled to the front cover 101, the protruding portion 104c of the
holding member 104 is in close contact with the back surface 101g of the upper plate portion 11
to form the openings 101bL and 101bR and the microphones 102bL and 102bR Spaces S1L and
S1R connected with each other are defined from the other space S0 inside the front cover 101
and shielded. In addition, a space S2 connected to the speaker hole 101a and the upper surface
102a1 of the speaker 102a is in contact with the other space S0, with an elastic member 102aa
fixed to the upper portion of the speaker 102a closely contacting the back surface 101g of the
upper plate portion 11 all around. It is set up and shielded. [Selected figure] Figure 6
Electronics
[0001]
The present invention relates to an electronic device such as an imaging device provided with a
speaker and a microphone.
[0002]
BACKGROUND Conventionally, electronic devices provided with a speaker and a microphone are
known.
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Some electronic devices of this type hold a speaker and a microphone by a holder.
[0003]
For example, in the device of Patent Document 1 below, a component holder of a structure in
which a holding portion for a microphone and a holding portion for a speaker are integrally
formed is adopted. According to this component holder, it is possible to improve the
assemblability by making it difficult to remove the component, and to simplify the assembly by
attaching the microphone and the speaker at one time.
[0004]
Japanese Patent Application Laid-Open No. 9-271090
[0005]
However, in the above-mentioned patent document 1, although the assemblability is improved by
holding the speaker and the microphone by the integral component holder, the sound insulation
of the speaker and the microphone can not be achieved only by the component holder.
Therefore, sound insulation of the speaker and the microphone is performed by separate parts.
As a result, the number of parts is increased, the cost of parts is increased, and the number of
assembling steps is also increased.
[0006]
In particular, when the speaker and the microphone are disposed close to and adjacent to each
other as in a small image pickup apparatus, the influence of the manufacturing error and the
assembling error on each other in the assembled state becomes large. It is not easy to secure
both together.
[0007]
The present invention has been made to solve the above-mentioned problems of the prior art,
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2
and its object is to improve the assemblability of the audio output unit and the audio input unit
and to secure the sound insulation of both components with a small number of parts. To provide
electronic devices that can
[0008]
In order to achieve the above object, an electronic device according to the present invention
integrally holds a speaker, a microphone, an exterior member in which a speaker hole and a
microphone hole are formed, the speaker and the microphone, It is an electronic device having a
holding member which arranges the held speaker at a position corresponding to the speaker hole
by being fixed, and arranges the held microphone at a position corresponding to the microphone
hole. When the holding member is fixed to the exterior member, a ridge portion is formed on the
holding member in close contact with the exterior member to shield the space connecting the
microphone and the microphone hole from other spaces. When the holding member is fixed to
the exterior member, it has an elastic member that shields a space connecting the speaker and
the speaker hole from another space.
[0009]
According to the present invention, it is possible to improve the assemblability of the speaker and
the microphone and to secure both the sound insulation properties with a small number of parts.
[0010]
FIG. 1 is an exploded perspective view of a part of a digital camera according to a first
embodiment of the present invention.
FIG. 2 is an exploded perspective view of a portion of the digital camera.
It is a disassembled perspective view of FPC and a holding member.
It is a disassembled perspective view of FPC and a holding member.
It is a perspective view of FPC and a holding member which were assembled. It is a fragmentary
sectional view in alignment with the AA line of Drawing 1 which shows the state where FPC,
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3
sheet metal, and a holding member were assembled to a front cover. It is a figure which shows
the connection of FPC and a main wiring board. It is a figure which shows wiring of FPC, and is
an enlarged view which shows wiring of the mounting part of a microphone. The digital camera
which concerns on the 2nd Embodiment of this invention WHEREIN: It is a fragmentary sectional
view in alignment with the AA line of FIG. 1 which shows the state which FPC, the sheet metal,
and the holding member were assembled on the front cover.
[0011]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings.
[0012]
First Embodiment FIG. 1 and FIG. 2 are exploded perspective views of a part of a digital camera
as an electronic device according to a first embodiment of the present invention.
The digital camera according to the present embodiment includes a speaker 102a and a pair of
microphones 102b (a microphone for left audio input 102bL and a microphone for right audio
input 102bR). As shown in FIGS. 1 and 2, the front cover 101 is a part of the exterior member of
the present digital camera. When a camera as a product is used, the upper plate portion 11 of the
front cover 101 as an exterior member is usually used as the upper side, and hence the
directions of the front and back sides of the upper plate portion 11 are hereinafter referred to as
upper and lower, respectively. Do. Moreover, the longitudinal direction of the upper plate part 11
is called the left-right direction. Accordingly, the surface of the upper plate portion 11 which is
the outer surface of the exterior member is the surface 101 h (see FIG. 1), and the surface which
is the inner surface of the exterior member is the rear surface 101 g (see FIG. 2).
[0013]
1 and 2 mainly show components related to the assembly of the speaker 102a and the pair of
microphones 102b. FIG. 1 is a perspective view from above and FIG. 2 is a perspective view from
below. Inside the front cover 101, a flexible printed circuit (hereinafter referred to as an FPC)
102, a sheet metal 103 for fixing the FPC 102, and a holding member 104 are provided. These
are disposed in a stacked state in the order of the holding member 104, the FPC 102, and the
sheet metal 103 from the top on the back side of the upper plate portion 11.
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[0014]
The holding member 104 is integrally formed of an elastic member, and integrally holds the
speaker 102a and the microphones 102bL and 102bR. In the present embodiment, a rubber
material is employed as an example of the elastic member constituting the holding member 104,
but any elastic member having sufficient elasticity may be used.
[0015]
As shown in FIG. 1, the upper plate portion 11 of the front cover 101 is formed with a speaker
hole 101 a for transmitting the sound emitted from the speaker 102 a to the outside.
Microphone holes 101bL and 101bR for the left voice input microphone 102bL and the right
voice input microphone 102bR to pick up sound from the outside are respectively formed on
both sides in the left-right direction of the speaker hole 101a. The microphone holes 101bL and
101bR are disposed adjacent to the speaker hole 101a with the speaker hole 101a interposed
therebetween, and are a left-right pair. The speaker hole 101a and the microphone holes 101bL
and 101bR are all open on the surface 101h which is the same surface.
[0016]
The upper plate portion 11 of the front cover 101 is also formed with a recess 101 c for
assembling a release button (not shown). The shooting preparation operation (photometric
operation, focusing operation, etc.) is started by half-pressing the release button, and the
shooting operation (exposure to an image pickup element such as a CCD, not shown) is started by
full-pressing. The upper plate 11 also has a mounting hole 101d for mounting a power button
(not shown) for turning on and off the power, and a mounting hole 101e for mounting a zoom
lever (not shown) for zooming the lens (not shown). It is formed.
[0017]
As shown in FIG. 2, on the back surface 101 g of the upper plate portion 11, bosses having
fastening holes 101 i are provided in a protruding manner at three places. Further, protrusions
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101 f for positioning the sheet metal 103 are formed at two places.
[0018]
As shown in FIG. 1, in addition to the speaker 102a and the microphones 102bL and 102bR, the
release switch 102c, the zoom switch 102e, and the power switch 102d are mounted on the FPC
102. The FPC 102 is connected to a main wiring board 106 (see FIG. 7) described later. The
release switch 102c and the zoom switch 102e are two-stage switches. The microphones 102bL
and 102bR are disposed on both left and right sides of the speaker 102a. The microphones
102bL and 102bR are a pair of stereo type microphones, and are for L channel and R channel,
respectively. The FPC 102 is also formed with a positioning hole 102 f for positioning the sheet
metal 103.
[0019]
The positions of the speaker 102a and the microphones 102bL and 102bR correspond to the
positions of the speaker hole 101a and the microphone holes 101bL and 101bR in the upper
plate portion 11 of the front cover 101, respectively. The positions of the power switch 102d, the
zoom switch 102e, and the release switch 102c correspond to the positions of the hole 101d, the
hole 101e, and the recess 101c in the upper plate portion 11, respectively.
[0020]
As shown in FIG. 1, a plurality of (three) screw through holes 103a, a plurality of (two)
positioning through holes 103b, and a pin caulking portion 103c are formed in the sheet metal
103, and two diaphragm convexes are formed. The shape portion 103 d is formed to protrude
upward. The positions of the screw through holes 103 a and the positioning through holes 103 b
correspond to the positions of the fastening holes 101 i and the protrusions 101 f in the upper
plate portion 11 of the front cover 101. Further, the positions of the pin caulking portion 103c
and the diaphragm convex shaped portions 103d and 103d correspond to the positions of the
positioning holes 102f and the microphones 102bL and 102bR in the FPC 102.
[0021]
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The FPC 102 and the sheet metal 103 are assembled to the front cover 101 as follows. First,
various components are mounted on the FPC 102 in advance, and the FPC 102 and the holding
member 104 are assembled (described later in FIGS. 3 to 5).
[0022]
Then, the FPC 102 is assembled to the sheet metal 103. At that time, the bent portion 102h2 is
bent with respect to the plate portion 102h1 on the side where the speaker 102a of the FPC 102
is mounted, and the sheet metal 103 is assembled by being sandwiched from above and below by
the plate portion 102h1 and the bent portion 102h2. In FIG. 1 and FIG. 2, the bent portion 102 h
2 is shown in a bent state. Further, when assembling the FPC 102 to the sheet metal 103, the pin
caulking portions 103c are inserted into the corresponding positioning holes 102f. Thus, the
sheet metal 103 and the FPC 102 are positioned. Further, the FPC 102 and the sheet metal 103
are fixed by a double-sided tape (not shown).
[0023]
Then, the combination of the FPC 102 and the sheet metal 103 is disposed on the upper plate
portion 11 of the front cover 101 from the back side. At this time, the projection 101 f of the
upper plate 11 is inserted into the through hole of the FPC 102 corresponding to the positioning
through hole 103 b and the positioning through hole 103 b of the sheet metal 103. The front
cover 101 and the sheet metal 103 are positioned by the engagement between the projection
101 f and the positioning through hole 103 b.
[0024]
Thereafter, the three screws 105 are inserted from below the sheet metal 103 into the through
holes 103 a of the sheet metal 103 and the through holes of the FPC 102 corresponding to the
screw through holes 103 a, and fastening holes in the upper plate portion 11 of the front cover
101. Screw on 101i. Thereby, the FPC 102 and the sheet metal 103 are fixed to the front cover
101.
[0025]
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Next, a method of assembling the FPC 102 and the holding member 104 will be described. 3 and
4 are exploded perspective views of the FPC 102 and the holding member 104. FIG. FIG. 5 is a
perspective view of the FPC 102 and the holding member 104 assembled.
[0026]
The FPC 102 is a single-sided mounting type printed circuit board, and the bent portion 102h2 is
folded back with respect to the plate portion 102h1 on the side on which the speaker 102a is
mounted. The audio output surface of the speaker 102a and the audio input surfaces of the
microphones 102bL and 102bR are directed in the same direction and upward.
[0027]
A cylindrical elastic member 102aa, which is a "different member" independent of the holding
member 104, is fixed in advance to the upper portion of the speaker 102a by pasting or the like
(see FIG. 3). There is no limitation on the manner of fixation. The elastic member 102aa is
preferably made of a material having elasticity, and preferably has high impact absorption. As an
example, PORON (registered trademark) is adopted. The elastic member 102aa may be made of
the same material as the holding member 104, but preferably, a material different in hardness
from the holding member 104 is employed.
[0028]
In the upper part of the portion corresponding to the microphones 102bL and 102bR of the
holding member 104, a projecting stripe portion 104c having a substantially square shape in a
plan view substantially rectangular shape (frame shape) is provided to surround the opening of
the voice input surface of the microphones It is provided in duplicate (see FIG. 3). The protrusion
104c is formed for each of the L channel and the R channel.
[0029]
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An opening 104a is formed in the holding member 104 so that the speaker 102a can be
assembled from the lower side of the holding member 104 (see FIGS. 3 and 4). The speaker 102a
is assembled by being pushed into the opening 104a from below. Further, an opening 104b is
opened in the holding member 104 so that the microphones 102bL and 102bR can be assembled
from the lower side of the holding member 104 (see FIG. 4). The microphones 102bL and 102bR
are assembled so as to be pushed into the opening 104b from below.
[0030]
6 is a partial cross-sectional view taken along the line A-A of FIG. 1 showing a state in which the
FPC 102, the sheet metal 103 and the holding member 104 are assembled on the front cover
101.
[0031]
First, when the speaker 102a and the microphones 102bL and 102bR are assembled to the
holding member 104, as shown in FIG.
As shown in FIG. 6, the elastic member 102aa protrudes upward from the opening 104a. The
upper end of the protrusion 104c is at the highest position of the holding member 104, and the
upper end positions of the protrusion 104c and the elastic member 102aa are substantially the
same.
[0032]
Further, as shown in FIG. 6, the speaker 102a is held in the opening 104a. The opening 104b is
formed with a plurality of steps in the vertical direction, and the microphones 102bL and 102bR
are held above the lowermost lower opening 104b1 of the openings 104b. Therefore, the
speaker 102 a and the pair of microphones 102 b are integrally held by the holding member 104
so as to be enclosed.
[0033]
When the FPC 102, the sheet metal 103 and the holding member 104 are assembled to the front
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cover 101, the holding member 104 is assembled so as to be pressed by the upper plate portion
11 of the front cover 101. Therefore, as shown in FIG. 6, the protrusion 104 c having the highest
height of the holding member 104 is deformed by the elastic force of the rubber material, and is
in close contact with the back surface 101 g of the upper plate 11 over the entire circumference.
Thus, a space S1L connected to the microphone hole 101bL and the upper surface 102b1L of
the microphone 102bL is defined and shielded from the other space S0 inside the front cover
101. Furthermore, a space S1R connected to the microphone hole 101bR and the upper surface
102b1R of the microphone 102bR is also provided and shielded from another space S0. The
spaces S1L and S1R are sealed except for the microphone holes 101bL and 101b and the
microphone 102b. Therefore, the sound insulation of the microphone 102b is secured. In
particular, since the protruding portion 104c is double, the adhesion with the front cover 101 is
high, and the voice input characteristic of the microphone 102b can be made favorable.
[0034]
Although the protruding portion 104c has a double structure in the present embodiment, the
shape is not limited to this as long as the adhesion can be secured. For example, it is possible to
use a single enclosure shape instead of double, and to make the width of the protrusion wide as
much as the double. Also, instead of double, triple or more may be used.
[0035]
On the other hand, when the FPC 102, the sheet metal 103 and the holding member 104 are
assembled to the front cover 101, the elastic member 102 aa projecting from the opening 104 a
of the holding member 104 is also pressed by the upper plate portion 11 of the front cover 101.
Therefore, as shown in FIG. 6, the elastic member 102 aa deforms due to its elasticity, and
adheres to the back surface 101 g of the upper plate portion 11 all around. As a result, the space
S2 connected to the speaker hole 101a and the upper surface 102a1 of the speaker 102a is
defined and shielded from the other space S0 inside the front cover 101, and the space S1L and
S1R are also shielded. The space S2 is sealed except for the speaker hole 101a and the speaker
102a. Therefore, the sound insulation of the speaker 102a is secured, and it becomes difficult to
pick up the noise inside the exterior and the sound of the microphone 102b.
[0036]
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10
By the way, by attaching the holding member 104 to the FPC 102 in which the sheet metal 103
is attached, as described above, the microphones 102bL and 102bR are held in the opening
104b. Along with that, each of the aperture convex shaped parts 103d of the sheet metal 103
abuts on the lower surface 102b2L of the microphone 102bL and the lower surface 102b2R of
the microphone 102bR and closes the lower opening 104b1 of the corresponding opening 104b
(FIG. 6) reference). As a result, it becomes more difficult for the speaker 102a to pick up noise
inside the exterior.
[0037]
FIG. 7 is a diagram showing the connection between the FPC 102 and the main wiring board
106. As shown in FIG. FIG. 8A is a view showing the wiring of the FPC 102, and FIG. 8B is an
enlarged view showing the wiring of the mounting portion of the microphones 102bL and
102bR.
[0038]
As shown in FIG. 7, an audio circuit block 106 b including an audio IC 106 a is mounted on the
main wiring board 106. The main wiring board 106 and the FPC 102 are connected by an interboard connector 102 g. Audio is taken in as an electrical signal by the microphones 102bL and
102bR. The audio circuit block 106b has a microphone amplifier for amplifying the electric
signal output from the microphones 102bL and 102bR.
[0039]
In the audio circuit block 106b, an analog electric signal output from the microphone amplifier is
converted into a digital signal by the A / D converter, and audio data converted to a digital signal
is recorded. The digital signal sent from the A / D conversion unit is processed and converted by
the audio signal processing unit, and the processed digital signal is converted into an analog
signal by the D / A conversion unit. The analog signal sent from the D / A converter is amplified
by the audio output amplifier, and the analog signal amplified by the audio output amplifier is
output from the speaker 102a or an audio cable (not shown).
[0040]
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11
The microphones 102bL and 102bR are silicon microphones and are mounted on the FPC 102.
The microphones 102bL and 102bR have four terminals, and are connected to the pattern on the
FPC 102 by mounting using solder. The FPC 102 is a single-sided flexible printed circuit board,
and a copper pattern is wired on a base film made of polyimide, and the surface is covered with a
cover lay also made of polyimide.
[0041]
The wiring of the microphones 102bL and 102bR will be described. As shown in FIG. 8B, the
ground signal line 201 and the output signal line 202 are connected to the microphone 102bL.
The power supply signal line 203 for driving them is connected to the microphone 102bL and
the microphone 102bR. The ground signal line 204 and the output signal line 205 are connected
to the microphone 102bR. These signal lines are connected to the terminals of the microphones
102bL and 102bR by soldering. The ground signal terminals 201a and 201b of the microphone
102bL, the output signal terminal 202a, and the power supply signal terminal 203a correspond
to these terminals. Furthermore, the ground signal terminals 204a and 204b, the output signal
terminal 205a, and the power signal terminal 203b of the microphone 102bR correspond to this.
[0042]
As shown in FIGS. 8A and 8B, the positive signal line 206 and the negative signal line 207 of the
speaker 102a are provided as the wiring for the speaker 102a. As shown in FIG. 8A, the FPC 102
is directly soldered to the speaker 102 a at the soldering portion 208. The adhesive portion 208a
of the FPC 102 is adhered to the speaker 102a with a double-sided tape, and is configured not to
apply a load to the soldering portion 208 even when a load is applied to the speaker 102a during
an assembly operation or the like.
[0043]
The operation system signal line group 209 includes signal lines of a power switch 102 d, a
release switch 102 c, and a zoom switch 102 e. The check pad group 210 is one in which the
signal lines of the speaker 102 a and the microphones 102 b L and 102 b R are circularly
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exposed. The check pad group 210 detects each signal of the speaker 102a and the microphones
102bL and 102bR by applying a probe, and can check whether there is a disconnection due to
mounting failure in the unit assembled state. Further, it can be checked whether there is a
difference in sensitivity between the left and right microphones 102bL and 102bR of the stereo
microphones. When there are a plurality of speakers 102a to constitute a stereo speaker, it is
also possible to adjust the left and right sound pressure levels. By providing the check pad,
adjustments can be made without disassembly.
[0044]
As shown in FIG. 8B, the signal lines related to the speaker 102a and the microphones 102bL
and 102bR are arranged in parallel. However, since the signal line next to the plus-side signal
line 206 of the speaker 102a is the ground signal line 201 of the microphone 102bL, the noise
of the signal of the speaker 102a is prevented from being superimposed on the output signal line
202 of the microphone 102bL. It is done.
[0045]
Further, by connecting the power supply signal line 203 between the output signal line 202 and
the output signal line 205, the influence between the output signals is prevented. In addition,
since the power supply signal line 203 is a common power supply line for the left and right
microphones, the single-sided flexible printed circuit board can be obtained by sharing the
centers of the left and right output signal lines 202 and 205. It has become easy to wire. Further,
even in the single-sided flexible printed circuit board, by sharing the power supply, the number
of pins of the inter-board connector 102g when connecting to the main wiring board 106 can be
reduced, which leads to cost reduction.
[0046]
The ground signal line 204 prevents noise such as static electricity from the operation system
from being superimposed. The ground signal line 201 and the ground signal line 204 are wired
on the same plane, and they prevent external noise from being mixed.
[0047]
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The speaker 102a is folded back at a folding position L1 shown in FIG. 8A at the time of
assembly. The speaker 102a can be disposed between the microphones 102bL and 102bR by
folding back. When the speaker 102a is assembled to the holding member 104 by providing the
folded back, the FPC 102 can be easily assembled because the FPC 102 has a margin. Further, it
is not necessary to assemble the speaker 102a and the microphones 102bL and 102bR at one
time, and it is sufficient to fold the FPC 102 after assembling the microphones 102bL and 102bR
before assembling the speaker 102a, so disconnection of the FPC 102 can be suppressed.
[0048]
Since the wires are wired in this manner, the FPC 102 on which the speaker 102a and other
operation systems are mounted can be configured as a single-sided flexible printed circuit while
suppressing the superposition of noise on the output signal lines 202 and 205. This leads to cost
reduction and can also improve assemblability.
[0049]
As described above, in the present embodiment, the close contact of the speaker 102a with the
back surface 101g of the upper plate portion 11 of the front cover 101 and the close contact of
the microphone 102b are performed via separate parts. Thereby, it is possible to ensure close
contact with the front cover 101 regardless of the assembled state of each other. In any case, in
the case where a structure is adopted in which the front cover 101 is brought into close contact
with the same member (for example, the holding member 104) integrally, the following
inconveniences are assumed. For example, the microphones 102bL and 102bR may be inclined
and attached, and the portion of the holding member 104 around the microphones 102bL and
102bR may not be in close contact with the front cover 101 sufficiently. Then, the portion of the
holding member 104 around the speaker 102 a may not be in close contact with the front cover
101 sufficiently.
[0050]
As in the present embodiment, the sound insulation of the speaker 102a and the microphone
102b is not performed by an integral part, but the sound insulation is performed by separate
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members, so that each manufacturing error and assembly error have less influence on each other
in the assembled state. Become. Moreover, since it shields with another member, there also exists
an advantage that a mutual vibration is not transmitted directly. Therefore, the sound insulation
becomes possible without depending on the respective assembling states, and the sound quality
can be improved.
[0051]
According to the present embodiment, since the speaker 102a and the microphone 102b are
held by the integral holding member 104, the number of assembling steps can be reduced
compared to separate holding, and the assemblability can be improved. Further, since the sound
insulation of the microphone 102b is performed by the protruding portion 104c which is a part
of the elastic holding member 104 itself, there is no need to provide a member dedicated to the
sound insulation, and the number of parts is reduced, leading to cost reduction. Thus, the
assemblability of the speaker 102a and the microphone 102b can be improved, and the sound
insulation between both can be secured with a small number of parts.
[0052]
Further, by making the hardness different between the elastic member 102aa and the holding
member 104, it is difficult for the deformation due to the manufacturing error or the assembling
error to be transmitted to each other, and the adhesion failure of the elastic members 102aa to
the protruding portion 104c is unlikely to occur. Thereby, the assemblability and sound
insulation of the speaker 102a and the microphone 102b can be further improved.
[0053]
Further, the microphone holes 101bL, the speaker holes 101a, and the microphone holes 101bR
are adjacently opened on the surface 101h, and the microphones 102bL and 102bR are disposed
on both sides of the speaker 102a correspondingly. In this way, the components arranged close
to each other usually have a large influence on each other in the assembled state, and the
influence of the sound is also large. Therefore, the present invention is particularly effective for
such an arrangement.
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[0054]
Second Embodiment In the second embodiment of the present invention, the ridge portion 104c
of the holding member 104 and the back surface 101g of the upper plate portion 11 of the front
cover 101 are compared with the first embodiment. The configuration of the abutting
engagement portion of The other configuration is the same as that of the first embodiment, so
different components will be mainly described.
[0055]
9 shows a digital camera as an electronic device according to the second embodiment, showing a
state in which the FPC 102, the metal plate 103 and the holding member 104 are assembled on
the front cover 101. FIG. FIG.
[0056]
As shown in FIG. 9, grooves 104 d are formed deeper than those in the first embodiment
between the double ridges 104 c.
The groove 104d is formed over the entire circumference. Protruding portions 101j are
respectively formed at positions corresponding to the grooves 104d on the back surface 101g of
the upper plate portion 11 of the front cover 101. Similarly to the groove 104 d, the protruding
portion 101 j has a substantially rectangular box shape (frame shape).
[0057]
When the FPC 102, the sheet metal 103, and the holding member 104 are assembled to the front
cover 101, and the protrusion 104c is in close contact with the back surface 101g, the
protrusion 101j is fitted into the corresponding groove 104d and fitted. As a result, the degree of
close contact between the projection 104c and the groove 104d on the back surface 101g is
increased, and the shielding state of the spaces S1L and S1R is increased. Therefore, according to
the present embodiment, the sound quality of the microphones 102bL and 102bR can be further
improved. The protruding portion 101j can be integrally formed on the front cover 101, so the
number of parts does not increase.
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[0058]
In each of the above-described embodiments, the double structure adopted for the projection
104c may be adopted for the upper portion of the elastic member 102aa. Further, the
configuration in which the groove 104d and the projecting portion 101j in the second
embodiment are fitted may be adopted to the upper portion of the elastic member 102aa.
[0059]
Further, the elastic member 102aa may not necessarily be fixed to the speaker 102a, and may be
interposed between the upper plate portion 11 of the front cover 101 and the speaker 102a. For
example, it may be fixed to the back surface 101 g of the upper plate portion 11.
[0060]
Further, in the above embodiments, the sound insulation of the microphone 102b is performed
using the protruding portion 104c which is a part of the holding member 104 itself, and the
sound insulation of the speaker 102a is an elastic member 102aa separate from the holding
member 104. I went through. However, the present invention is not limited to this, and the
opposite relationship may be made. That is, in the holding member 104, a meat portion
corresponding to the protruding portion 104c protruding from the microphone 102b is provided
around the speaker 102a. On the other hand, between the microphone 102 b and the upper plate
portion 11 of the front cover 101, another member corresponding to an elastic member 102 aa
surrounding the microphone 102 b and in close contact with the upper plate portion 11 is
interposed.
[0061]
After all, one of the microphone 102b and the speaker 102a and the corresponding space are
shielded from the other space S0 by the holding member 104. At the same time, the other of the
microphone 102b and the speaker 102a and the corresponding space may be shielded from
another space S0 by another member having elasticity different from the holding member 104.
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[0062]
As far as the effect of improving the assemblability of the speaker 102a and the microphone
102b and securing the sound insulation between both components small, the number of the
speakers 102a and the microphones 102b is not limited. For example, even one microphone
102b may be used. Good.
[0063]
The present invention is applicable not only to digital cameras but also to various electronic
devices provided with a speaker and a microphone.
[0064]
Although the present invention has been described above in detail based on its preferred
embodiments, the present invention is not limited to these specific embodiments, and various
embodiments within the scope of the present invention are also possible. Included in the
invention.
Some of the embodiments described above may be combined as appropriate.
[0065]
101 front cover 101a speaker hole 101bL, 101bR microphone hole 102a speaker 102b
microphone 102aa elastic member 104 holding member 104c ridge portion
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