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JPS63279699

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JPS63279699
[0001]
(A) Field of Industrial Application The present invention relates to a vibrator. (B) Related Art
Conventionally, communication means called pagers are widely used as means for transmitting a
signal desired to communicate with a specific person who is out. However, the signal received by
a specific person is mostly generated by audio frequency. (C) Problems to be solved by the
invention Therefore, when a specific person is in a crowd or it is necessary to keep quiet in a
meeting etc., it often causes troubles to surrounding people or places with loud noise. In some
cases, there was a drawback that it was difficult to get rid of it. (D) Means for Solving the
Problem The present invention was made to eliminate the above-mentioned drawbacks, and
means for solving the problem: by cutting by means of peristalsis, The feature is that a cruciform
disc-like armature made of soft magnetic material and a disc-like armature 2 whose center part is
made of soft magnetic material on both sides of the central part of the cruciform disc-like
armature The two cruciform diaphragms sandwiched between the two cruciform diaphragms and
the outer circumference of the two cruciform diaphragms have a circle whose thickness is
substantially equal to the thickness of the cruciform discoid armature. The annular separator is
sandwiched, and one surface is held by an annular yoke having an annular disc and the other
surface is a bottom made of soft magnetic material, and is fixed. The inner diameter of the
annular disc, the annular separate cylinder and the annular yoke is The cruciform inner bottom
surface opposes the discoid armature. The magnetic pole is provided, to provide a more
configured vibrator with circular plate-shaped armature and coils wound by lap and said opposed
magnetic poles. When a low frequency alternating current is supplied to the coil, the cruciform
discoid armature vibrates at a signal frequency or a double vibration frequency. In addition, the
cruciform disk-like armature is provided with an electrical contact, the flexible fixed contact in
contact with the electrical contact is insulated and attached to the annular disk, and the same
operation principle as the buzzer when a direct current is applied to the coil. The cruciform
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wedge is approximately equal to the resonant frequency determined by the stiffness of the two
cruciform diaphragms. Therefore, a specific person senses this vibration and does not bother
surrounding people. The embodiment will be described in detail below. FIG. 1 is a front view with
a case removed showing an embodiment of the present invention, and FIG. 2 is a side view in the
direction of arrows in FIG. In FIG. 1 and FIG. 2, 1 is a cruciform disk-like armature made of soft
magnetic material and shares four sectoral armatures in the central portion. Reference numeral 2
denotes two cruciform diaphragms, which are sandwiched by two discoid armatures of the
chutes 3 and 4 and fixed by rivets 5.
The outer periphery of the two cruciform diaphragms 2 has an annular space 6 made of a
nonmagnetic material having a thickness substantially equal to that of the cruciform disk
armature and an annular space 6 made of nonmagnetic material on one side. The disc 7 and the
other surface thereof are sandwiched by an annular yoke 8 made of a soft magnetic material, and
fixed by rivets 9. The inner diameters of the annular disc 7, the annular gap 6 and the annular
yoke 8 are slightly larger than the outer diameter of the cruciform disc-like armature 1 to form a
cylindrical magnetic gap 10. A circular f 4 -shaped magnetic pole 12 made of a soft magnetic
material is provided to face the annular armature 4, and a disc-shaped magnetic gap 13 is
formed between the disc-shaped armature 4 and the circular f 4 -shaped magnetic pole 12. A coil
14 is wound around the outer periphery of the disk-shaped armature 4 and the irregular
magnetic pole 12 so as not to contact the disk-shaped armature 4. Since the cruciform disk-like
armature 1 is supported by the two cruciform diaphragms 2, it is limited to reciprocating motion
only in the direction of arrow C in FIG. FIG. 3 is a side cross-sectional view of the above-described
structure in which the portion related to the magnetic circuit is extracted 1 when an alternating
current of low frequency f is applied to the coil 14 in this state, the generated magnetic flux The
cruciform disk-like armature 1 is attracted in the direction of arrow C so that the magnetic
resistance of the cylindrical magnetic gap 10 and the disk-like magnetic gap 13 is reduced. The
attraction force F is proportional to the square of the temporal change of the magnetic flux Φ.
That is, as is apparent from the equation I (and 1 (where each is a proportional constant, where
ω = 2πf: angular frequency = 1), the attraction force F attracts the cruciform discoid armature 1
in the direction of the arrow C, a plate armature 1 vibrates by receiving an alternating attraction
force of frequency 2f. Next, in FIGS. 1 and 2, 15 is fixed as an electrical contact to the cruciform
disk-like armature 1, and 16 is fixed as an insulating electrode to the annular disk 7 by the
insulating plate 17 as insulation. The portion of the fixed electrode 16 in contact with the
electrical contact 15 has flexibility in the direction of the arrow C in FIG. 2 perpendicular to the
paper surface in FIG. As shown in FIG. 2, one end of the coil 14 is connected to the bottom yoke
11, and the other end is connected to the fixed electrode 16 through the switch 18 and the
battery 19. The tip of the fixed contact 16 and the electrical contact 15 are separated from each
other. When the cruciform disk-like armature 1 is not attracted, the cruciform diaphragm 2 is not
deformed, and the tip of the fixed contact 16 is in contact with the electrical contact 15.
Accordingly, when the switch 18 is closed in this state, a direct current flows through the coil 14,
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and the cruciform disk-like armature 1 is attracted in the direction of the arrow C in FIG.
When a certain degree of suction is applied, the tips of the electric contact 15 and the fixed
electrode 16 are separated, and the energization of the coil 14 is stopped, so that the two disc 5
armatures 1 come in contact with the tip of the fixed contact 16. Energization of is started. That
is, the cruciform disk-like armature 1 vibrates in the same operation principle as the buzzer. The
vibration frequency at this time is approximately equal to the resonance frequency determined
by the mass of the cruciform disk-like armature 1 and the stiffness of the two cruciform
diaphragms 2. In FIG. 2, reference numeral 20 denotes a case made of a nonmagnetic material.
The preferred embodiment of the present invention is shown in FIGS. 1 and 2 in which the
annular disc 7 and the annular space 6 are made of a soft magnetic material. In FIG. 4, 1.12. 13
and 14 in this embodiment are the same as in FIGS. 1 and 2. In this case, the magnetic flux
generated by energizing the coil 14 flows as shown by the dotted arrow E in FIG. 4, but in the
cylindrical magnetic gap 10, the reluctance does not change due to the vibration of the cruciform
discoid armature 1, but As compared with the case of FIG. 3, the magnetic resistance thereof is
reduced, so that the supply of the magnetic flux to the disk-shaped magnetic air gap 13 is larger
than that of the case of FIG. FIG. 5 is a side sectional view showing another embodiment of the
present invention, and from 1 to 20 are the same as in FIG. 1 and FIG. In FIG. 5, a cylindrical
magnetic pole is formed as shown by 22 so that a disk-shaped air gap 21 can be formed. d is the
length of the cylindrical magnetic gap 21 and h is the thickness of the disk-shaped magnetic gap
13. Further, FIG. 5 shows a state where the cruciform disk-like armature 1 is at rest when the coil
14 is not energized. Therefore, the electrical contact 15 is in contact with the tip of the fixed
electrode 16. The side cross-sectional view which extracted and drew the part relevant to the
magnetic circuit at the time of comprising the annular disc 7 and the annular | circular shaped
partition part 6 with nonmagnetic material and FIG. It is shown in FIG. 7 and FIG. The magnetic
flux flows as shown by the dotted arrow F in FIG. In order to avoid the collision of the discshaped armature 4 and the opposing internal hard magnetic pole 12 due to the vibration of the
cruciform disc-shaped armature 1, the thickness h of the disc-shaped magnetic gap 13 must be
taken considerably large. It is necessary to increase the magnetic reluctance of this part and to
reduce its attractive force. In such a case, by setting the length d of the cylindrical magnetic gap
21 large, the magnetic resistance of this portion decreases, and the amount of magnetic flux
supplied to the cylindrical magnetic gap lO can be increased. In FIG. 7, when the magnetic
resistance of the 1.3.4.6.7.8.10 ° magnetic gap 13 is increased, the length d of the cylindrical
magnetic gap 21 is set to almost O, The amount of magnetic flux supplied to the portion
increases, and the change in magnetic resistance when the disk-like armature 4 is attracted also
increases, and the attraction force can be increased.
Arrow G in FIG. 7 represents the flow direction of the magnetic flux generated by energizing the
coil. FIG. 8 is a side sectional view of a yoke portion showing another embodiment of the present
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invention, showing a magnetic pole portion facing the disc-like armature 4. In FIG. 8, 8.11.1.14
and 22 are fixed by means such as adhesion via a disc permanent magnet 24 between the disc
armature 4 of FIG. 5 and the facing circular pole-shaped magnetic pole 12. It is NSS is a magnetic
pole of the disk-shaped permanent magnet 24. The yoke part shown in FIG. 8 is incorporated in
FIG. 5, and the portion related to the magnetic circuit of the vibrating body in which the annular
disc 7 and the annular space 6 are composed of nonmagnetic material is extracted and drawn.
FIG. In FIG. 9, 1.3.4.8.10, 11.12.13.14.21.22.23.24 and h are the same as in FIG. 5 and FIG. The
magnetic flux generated by the disk-like permanent magnet 24 flows as shown by the dashed
dotted arrow J in FIG. With the vibrator of FIG. 5 incorporating the yoke portion of FIG. 8 and the
electric contact 15 and the fixed electrode 16 removed, the magnetic flux density generated in
the cylindrical magnetic gap 10 by the disc permanent magnet 24 is B, Assuming that the
magnetic flux density generated in the cylindrical magnetic gap 10 by energizing the coil 14 is b
cos ωt (where ω is the frequency of the applied AC and t is the time in the direction of the arrow
J in time). The plate-like armature l is attracted so that the magnetic resistance of the cylindrical
magnetic gap 10 is reduced. In this absorption F =, (B + b cos ωt) ′ ′ = KB (13 ′ + 2 Bb cosc, +
t−1 ′ cos′ωt) (2) The right-hand bracket inner box 1.2 term on the right side of the cruciform
disk-like armature 1 in the arrow C direction The third term is an alternating attraction that is
proportional to the drive frequency f, and the fourth term is an alternate attraction that is
proportional to a frequency r twice the drive frequency and a tt length r. If it is now B >> b, F ′
′ K (B + 2 B b cos ωt) − − − − − (3) (3) is obtained, and the driving force is proportional to
the driving frequency and a thickness of 5 ° '31 ⁄4 TJ I), the second work completion j wave is
proportional to the drive frequency mixed with 1⁄4 of the soot. Therefore, the cruciform disk-like
armature 1 vibrates by receiving an alternating attraction that is proportional to the frequency of
the applied AC. Next, if the electrical contact 15 and the fixed electrode 16 are attached as shown
in FIG. 5, the cruciform disk-shaped armature vibrates according to the same operation principle
as the buzzer by closing the switch 1 day. In the above description, one diaphragm is a composite
of four rectangular diaphragms and a cruciform diaphragm, but a combination of three or more
rectangular diaphragms is a disc-shaped armature (G) effect or more. As explained in detail,
according to the invention, the cruciform discoid armature can be vibrated by the signal of the
sender.
Therefore, since the case also vibrates as a reaction, if the vibrator according to the present
invention is placed, for example, in a pocket of clothes or the like, the intention of the sender can
be sensed without generating unnecessary sound.
[0002]
Brief description of the drawings
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[0003]
FIG. 1 is a front view with a case removed according to an embodiment of the present invention,
FIG. 2 is a side sectional view taken along the line AA in FIG. 1, and FIG. 5 is a side sectional view
showing another embodiment of the present invention FIGS. 6, 7 and 8 are side sectional views
showing the portions related to the magnetic circuit of the FIG. 5 embodiment, and FIG. 8 is a
side sectional view of a yoke portion showing another embodiment of the present invention. FIG.
9 is a side sectional view extracting and illustrating a portion related to the magnetic circuit of
the embodiment in which the yoke portion shown in FIG. 8 is incorporated in FIG.
Reference Signs List 1: cruciform disc-shaped armature 2: cruciform diaphragm 3.4: disc-shaped
armature 5.9: rivet 6 annular separation: 7 Annular disc, 8: Annular yoke, 10: Cylindrical 15:
Electrical contact, 16: Fixed electrode, 17: Insulating plate, 18: Switch, 19: ... Battery, 20: Case,
21: Cylindrical magnetic gap, 22: Cylindrical magnetic pole, 23: Bottom yoke, 24: Disk-like
permanent magnet, C, DSE, F, G, H, j ... arrows; f l rgU 1 ... cruciform disk-like armature, 2 ...
cruciform diaphragm 3 ... disk-like armature, 5.9 ... rivets 7 · · · · Annular disc-10 · · · cylindrical
magnetic air gap 1.15 · · · electrical contacts 1.16 · · · fixed electrode 17 · · · insulating plate 2 Fig.
1 · · · cruciform discoid armature, 2 · · · cruciform diaphragm 3.4 · · · discoid armature, 5.9-nove ·
6 · · · annular gap, 7 · · · · Annular disc, 8 · · · Annular yoke 10 · · · cylindrical magnetic 'jjc
clearance, 11 · · · bottom yoke 12 · · · · magnetic pole, 13 · · · · disk 1 ri air r bi 14 ... coil, 15 ...
conductive 'fC, contacts, 16 ... fixed electrode 17 ... insulating plate, 18 ... switch, 19 ... battery 20
... Kesuzo 3n-dong 1 21 years of age 5 · · · circular magnetic magnetic gap, 22 · · · W-shaped
magnetic pole l · 'ryt 5 years 8 Figure 23 · bottom yoke, 24 · · · disk permanent magnet 1 Written
Procedure Amendment November 30, 1987
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