JPH07327288A - Sound bodily sensor - Google Patents

Abstract

PURPOSE:To decrease the number of components and facilitate assembling operation and then to obtaining absorbing operation for an unpleasant sound and vibration amplifying operation by increasing the vibration transmission efficiency when the sound bodily sensor is put on the body and eliminating the need for a buffer material as its constituent element. CONSTITUTION:The sound bodily sensor 1 is equipped with a container part 3, a partition plate 5 which forms a sound generation chamber in the container part 3, and a speaker 6 which is mounted on the partition plate 5 and generates a sound as a vibration source. The bottom surface part 3x of the container part 3 is formed in a curved shape conforming with the shape of the body. Further, a corrugated plate part 9 which provides flexural vibration associatively with the speaker 6 is formed at at least part of the partition plate 5. Then the peripheral edge part of the partition plate 5 is fixed directly to the container part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention converts an electric acoustic signal output from an arcade game machine, a home game machine, or other various types of audio equipment into mechanical vibrations and applies it to a user's body. More particularly, the present invention relates to an acoustic sensor that is configured such that a speaker that emits sound as a vibration source is elastically supported in the internal space of the container body through a plate-shaped body.

[0002]

2. Description of the Related Art In general, the basic structure of this type of acoustic sensor has a plate-shaped body that divides the inner space of the container body into two chambers, and an opening formed in the plate-shaped body. It is equipped with a speaker. Then, due to the sound being emitted from the speaker, air vibration is generated in the internal space of the container body based on its sound pressure, and this vibration is transmitted to the user's body through the outer wall of the container body. Has become.

As a specific example thereof, Japanese Patent Laid-Open No. 31628/1993
According to Japanese Unexamined Patent Publication No. 2 (1994), in a basic structure in which the inside of a closed container is partitioned into two airtight chambers by a partition wall to which a speaker is attached, the partition wall is formed via a shock absorbing material such as rubber or polyurethane that absorbs vibration. An additional configuration is disclosed in which the outer edge of the above is installed in the closed container. According to such a configuration, the partition wall is provided with a function as a vibration plate, the partition wall vibrates integrally with the cone paper of the speaker, and due to the appropriate vibration absorbing action of the cushioning material, No unpleasant reverberation is generated.

In this case, if the partition wall is directly fixed to the closed container without interposing the cushioning material, an unpleasant reverberant sound is generated due to the distortion and cracking of the sound from the speaker, and the acoustic sound. The sharpness will be impaired. But,
If the above-mentioned cushioning material is present, this unpleasant sound is appropriately absorbed, and the clarity of sound is increased.

Further, according to the above acoustic sensor, the through hole is formed at one location of the partition wall, and the air vibration generated in one of the hermetic chambers due to the sound pressure from the speaker causes
Since the air vibration is propagated to the other airtight chamber through the through hole, the air vibration once generated is not immediately attenuated, and suitable air vibration is generated in the entire inner space of the container body. In addition, the publication suggests that the sound pressure is further increased by the effect of narrowing the sound generated when the air vibration passes through the through hole, and the vibration generated on the entire outer wall of the closed container becomes large.

[0006]

According to the acoustic sensor disclosed in the above publication, the closed container has a cylindrical shape, and the bottom wall, which is the contact side with the body, is flat. Therefore, when this acoustic sensor is actually worn on the body, only a part of the bottom wall comes into contact with the body.

That is, there are irregularities on the contact portion of the body with which the acoustic sensor touches, for example, on the back and waist, and if a wide area of the back and waist is macroscopically considered, it is a predetermined value. It has a convex curvature. Nevertheless, if the bottom wall is flat, the back and waist cannot be contacted in a uniform state, and the vibration generated on the outer wall of the closed container cannot be efficiently transmitted to the body. In particular, in order to evenly transmit the vibration to a wide area of the body, even if the area of the flat bottom wall is increased,
The vibration is only partially transmitted, and the above-described vibration transmission efficiency is further deteriorated.

Further, in the acoustic sensor disclosed in the above publication, since the cushioning material is an indispensable constituent in order to absorb unpleasant sound, the number of parts is increased by that amount, and the work at the time of assembling work is increased. This leads to an increase in man-hours and complication of work, resulting in a problem that work efficiency deteriorates.

In particular, the cushioning material disclosed in the above publication is a ring-shaped member having an annular groove formed on the inner peripheral surface thereof.
The outer peripheral edge portion of the partition wall is fitted in, and the outer peripheral surface thereof is fixed to the inner peripheral surface of the closed container with an adhesive or the like.
Therefore, it is necessary to perform work such as holding the partition wall on the cushioning material and adhering the cushioning material to the airtight container, and each of these operations is extremely troublesome and complicated, and it is necessary for mass production. It will be a big obstacle.

In addition, with such a structure, due to frequent vibration of the partition wall, peeling may occur at the bonding portion of the cushioning material, or the partition wall may drop from the annular groove of the cushioning material, resulting in durability. It also has a problem in that it cannot withstand long-term use.

The present invention has been devised under the circumstances described above, and aims to improve the vibration transmission efficiency when mounting this kind of acoustic sensor to the body, and at the same time, to form a partition wall on the container body. The objective is to eliminate the cushioning material that elastically supports, reduce the number of parts and facilitate the assembly work, and to provide an acoustic sensor with excellent vibration characteristics and vibration transmission characteristics at low cost. To do.

[0012]

In order to solve the above problems, the present invention takes the following technical means.

That is, in the invention described in claim 1 of the present application, a sound generation space is defined between at least a container portion having a bottom surface portion on the side of contact with the body and a speaker attached thereto. In the acoustic sensor configured to form a container body from the defining plate-like body and to generate vibration in the bottom surface portion of the container portion based on the sound emitted from the speaker, the bottom surface portion of the container portion is It is characterized in that at least a portion corresponding to the contact portion with the body is curved so as to follow the shape of the contact portion with the body.

The invention described in claim 2 of the present application is
At least a container body is formed of a container portion having a bottom surface portion on the side of contact with the body, and a defining plate-like body to which a speaker is attached to define a sound generation space between the container portion and the speaker. In an acoustic sensor configured to elastically support the container body and to generate vibration on the bottom surface of the container portion based on sound emitted from the speaker, at least a part of the defining plate-shaped body. In addition, a corrugated plate portion that flexibly vibrates in conjunction with the speaker is formed.

In this case, it is preferable that the peripheral edge of the defining plate-like body is directly fixed to the container body (claim 3).

It is preferable that the corrugated plate portion has a corrugated shape composed of a plurality of annular concavities and convexes concentric with a speaker mounting opening formed in the defining plate body. Item 4).

[0017]

According to the acoustic sensor according to the invention described in claim 1, since the bottom portion of the container portion forming the sound generation space is formed in a curved shape, the acoustic sensor is provided. When the body is attached to the body, it is possible to maintain a state in which the bottom portion is in uniform contact with the contact portion of the body. Therefore, the vibration generated on the bottom surface portion of the container portion due to the action of the sound pressure generated from the speaker is uniformly transmitted to the contact portion of the body, and the vibration transmission efficiency is improved.

If the bottom surface of the container portion is curved as described above, the vibration can be evenly transmitted over a wide area of the back or waist of the body, and the area of the bottom surface is widened to reduce the vibration. It is also possible to increase the total transmission amount.

On the other hand, according to the acoustic sensor according to the invention described in claim 2, when sound is emitted from the speaker and air vibration occurs inside the container body, this air vibration causes the vibration. Vibration is transmitted to the bottom of the container body. At this time, the defining plate-like body that defines the internal space with the container portion also vibrates, but a part or the whole of the defining plate-like body may perform an elastic supporting action for the speaker. Since the corrugated plate portion is formed, an unpleasant sound caused by acoustic distortion or cracking is appropriately absorbed by the bending vibration of the corrugated plate portion. As a result, the clarity of sound is effectively increased.

As described above, since the elastic supporting portion formed of the corrugated plate portion is formed on the defining plate body itself, it is not necessary to separately attach a cushioning material made of rubber or the like as in the conventional case, and the number of parts can be reduced and Assembly and workability can be improved.
Further, the corrugated plate-shaped portion can be formed by subjecting the plate-shaped body to press molding or the like, and since the strength of the portion does not unduly decrease, sufficient durability against frequent vibrations is also provided. Is obtained.

Further, the corrugated plate-shaped portion of the above-mentioned definition plate-shaped body not only absorbs unpleasant sound, but also flexural vibration of the corrugated plate-shaped portion generated in association with the speaker is caused on the bottom surface of the container body. It also becomes part of the vibration to be transmitted. That is, the sum of the air vibration due to the sound pressure generated in the internal space of the container body and the bending vibration of the corrugated plate-like portion is transmitted to the bottom surface portion of the container body and thus the body. When the vibration frequency of the air vibration matches the vibration frequency of the corrugated plate portion, resonance or resonance occurs and the amplitude increases, but this resonance does not cause an unpleasant sound. In the case of, it can be expected that a vibration that is preferable for the body is obtained.

Further, as described above, by forming the elastic supporting portion composed of the corrugated plate-shaped portion on the defining plate-shaped body itself, as in the invention described in claim 3 of the present application, the defining plate-shaped body is provided. The outer peripheral edge portion of the can be directly fixed to the container portion. As a result, not only is it easy to attach the defining plate-shaped body to the container portion, but also it is possible to secure a firm mounting state, and there is no risk of the defining plate-shaped body falling off even if frequent vibrations occur. The durability can be further improved.

Further, when the corrugated plate portion is formed into a plurality of annular wave shapes concentric with the speaker mounting opening as in the invention described in claim 4 of the present application, for example, a linear wave is formed. As compared with the case where the corrugated plate is formed in a shape, elastic deformation is more likely to occur in the corrugated plate portion, and vibration of sufficient amplitude is generated in the corrugated plate portion.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below.
A specific description will be given with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of an acoustic sensor 1 according to the present invention, FIG. 2 is a perspective view of its disassembled arrangement, and FIGS. 3 and 4 are longitudinal sectional views thereof.

As shown in the above figures, the acoustic sensor 1 is
A container main body 4 that joins the two half-split cases 2 and 3 to form an internal space therebetween, a partition plate 5 that divides the internal space of the container main body 4 into two parts, and the partition plate 5. The attached speaker 6 is provided. Then, as shown in FIG. 1, one end portion of the shoulder belts 15 and 15 wound around the user's shoulder and side belly belts wound around the side of the side belly are provided at both side edges of the acoustic sensor 1. 16,
One end of 16 is connected. Further, a front side cover member 7a is attached to the front surface side portion of the container main body 4 to obtain a soundproof effect by making the wall portion of the portion double structure, and the back surface side portion of the container main body 4 is attached. ,
A back cover member 7b that is in direct contact with the body surface is attached.

The container body may be composed of two members, that is, the back half case 3 and the defining plate 5. In this case, the front half case 2 is a protective cover. Will play a role as. That is,
Any structure may be used as long as the sound generation space 11 is defined between the back half case 3 and the partition plate 5, and therefore, the space between the front half case 2 and the partition plate 5 may be formed. The hermeticity does not have to be perfect.

On the other hand, the bottom surface portion 3x of the back half case 3 is formed in a curved shape so that the center portion in the width direction is depressed as shown in FIG. 4, and as shown in FIG. The longitudinal center portions on both sides are formed in a curved shape so as to bulge. Thereby, the bottom surface portion 3x
Is formed in a curved shape as a curved surface along the user's back, and care is taken so that the entire surface of the bottom surface portion 3x uniformly contacts the back. The bulging portion in the vertical direction shown in FIG. 3 need not be formed when the bottom surface portion 3x corresponds to the shape of the waist of the user, for example.

On the other hand, the material of the partition plate 5 is a general resin having a hard or semi-hard property, specifically, polypropylene, polyethylene, polystyrene, or the like.
ABS resin, polycarbonate, PWA, MMA, FR
P, ever resin, rubber resin or the like is used. And
A circular opening 8 is formed in a substantially central portion of the partition plate 5, and a peripheral edge of the opening 8 is formed by using a screw, a rivet, an adhesive agent, or the like at the expanded end peripheral edge of the speaker 6. Fixed. In this case, as shown in FIGS. 3 and 4, the expansion portion side of the speaker 6 is the half case 3 on the back side.
Is oriented toward the bottom surface portion 3x. Therefore, in actual use, the expanded portion side of the speaker 6 is directed toward the user's body side.

Further, as shown in FIG.
A corrugated plate portion 9 having a corrugated shape, which is composed of a plurality of annular concavo-convex portions 9a that are concentric with the opening 8, is formed on the outer peripheral side portion of the opening 8. Then, the speaker 6
Is elastically supported by the corrugated plate portion 9, and the corrugated plate portion 9 flexurally vibrates in association with the vibration of the speaker 6. Further, in the non-formation portion of the corrugated plate-like portion 9 in the partition plate 5, air vibrations can be circulated between the back space 10 and the sound pressure generating space 11 partitioned by the partition plate 5. A through hole 12 is formed for this purpose.
If necessary, instead of the through hole 12, for example, a slit may be formed.

However, it has been experimentally proved that, depending on the material of the partition plate 5, sufficient vibration can be secured without forming the corrugated plate-shaped portion 9 or the through hole 12. Therefore, it is preferable to appropriately provide the corrugated plate-shaped portion 9 and the through hole 12 according to the material of the partition plate 5.

Further, as shown in FIG. 2, flange portions 2a and 3a having relatively high rigidity are integrally formed on the outer peripheral edge portions of the two half-split cases 2 and 3, respectively. Part 2a. The flanges 2a and 3a are fixed to each other with screws, rivets, an adhesive or the like while the outer peripheral edge of the partition plate 5 is held between the flanges 3a. The flange portions 2a and 3a of the two half-split cases 2 and 3 are integrally formed with bulging portions 2b and 3b projecting outward at four locations, respectively. The shoulder belts 15 and the flank belts 16 are inserted and fixed in belt mounting holes 2c and 3c formed in 2b and 3b (see FIG. 4).

In this case, as shown in FIG. 5, the holding case 7 is formed by integrating the front cover member 7a and the back cover member 7b, and the container body 4 is housed therein. You may In the case of such a structure, as shown in the figure, the shoulder belts 15 and the flank belts 1 are provided on both sides of the holding case 7.
6 are connected or integrated. By forming an opening that can be opened and closed with a fastener or the like in a part of the holding case 7 (for example, the back surface), the container body 4 can be easily stored in and taken out from the inside of the holding case 7. Inspection work is simplified.

The material of the holding case 7 is as follows.
Those having relatively soft characteristics such as rubber and resin are used. The holding case 7 is flexibly deformed so that the internal space thereof becomes flat due to the pulling force of the belts 15 and 16 acting on the body when it is attached to the body, and is thereby housed inside. The container body 4 is held without rattling. Further, by accommodating the container body 4 inside the holding case 7, an auxiliary space 13 is interposed between the front half case 2 and the surface wall (cover member 7a) of the holding case 7. The auxiliary space 13 is always ensured by the presence of the inwardly projecting portion 7s of the cover member 7a on the front side, even if the holding case 7 is bent and deformed into a flat shape by the pulling force. The presence of the auxiliary space 13 prevents the subtle sound from leaking from the container body 4. The container body housed inside the holding case 7 may be composed of the back half case 3 and the partition plate 5 as described above. In this case, The front half case 2 may be eliminated.

On the other hand, as shown in FIGS. 1 and 4, the shoulder belts 15 and the flank belts 16 have elastic stretchable strips 15a having elasticity such as rubber around the connecting portion to the container body 4. 16a, the other portion is composed of non-stretchable strips 15b and 16b made of a non-stretchable material such as cloth, leather or resin. A large number of through holes 15x and 16x for ensuring air permeability are formed in the elastic stretchable strips 15a and 16a. The belts 15 and 16 may be formed of non-stretchable belts over the entire length.

In this case, as shown in FIG. 8, the other ends of the non-stretchable belt-shaped members 16b of the side belly belts 16 are connected to each other by the metal fitting 16w at the center of the user's abdomen. It is designed to tighten around the abdomen. Further, the other end of the non-stretchable belt-shaped body 15b of each shoulder belt 15 is wrapped around the user's shoulder and hung down to the abdomen through the metal fittings 15w at positions separated by a predetermined dimension from the side belt 16. Are linked together.

The materials of the two half-split cases 2 and 3 shown in FIGS. 1 to 5 are such that the front half-split case 2 has a characteristic of being hard or semi-hard, while the back half half-split case is made of a hard material. 3 has a soft characteristic. Specifically, for example, the front half case 2 is formed relatively thick with a material such as polypropylene or polyethylene, and the back half case 3 is relatively formed with a material such as polypropylene or polyethylene. Formed thin. In this case, since the bottom surface portion 3x of the back half case 3 is a portion that comes into contact with the user's body, in addition to the curved shape, this portion is thin and slightly bent. It is preferably formed so as to be deformed.

Next, the operation of the above embodiment will be described.

As shown in FIG. 7, when the acoustic sensor 1 is mounted on the user's back, the bottom surface 3x of the back half case 3 is in uniform contact over a wide area of the back. become.

In this state, the speaker 6 receives the acoustic signal in the low frequency range, and the speaker 6
While the sound pressure is emitted from the sound pressure, the sound pressure becomes a pressure wave, and air vibration is first generated in the sound pressure generation space 11. Then, this air vibration passes through the through holes 12 (or slits or the like) of the defining plate body 5 and propagates to the back space 10, and as a result, air vibration occurs in the entire inner space of the container body 4.

In addition to this, the cone paper of the speaker 6 vibrates, so that the speaker 6 itself vibrates while bending and deforming the corrugated plate-shaped portion 9 of the defining plate 5. As a result, even if the diameter of the speaker 6 is small, the same sound pressure generating effect as if the diameter of the speaker 6 is enlarged is obtained, and it is possible to generate a sufficient level of sound pressure. Therefore, although the speaker 6 built in the acoustic sensor 1 has a small diameter due to its installation space, it is possible to generate sufficient deep bass.

Further, since the vibration of the corrugated plate-shaped portion 9 of the partition plate 5 is also directly propagated to the bottom surface portion 3x of the back half case 3, the vibration is applied to the back of the user. Means that the sum of the vibration due to the direct propagation from the corrugated plate portion 9 and the air vibration due to the sound pressure is transmitted.

The vibration generated on the bottom surface portion 3x of the back half case 3 as described above is efficiently transmitted to the back which is in uniform contact with the entire area by forming the bottom surface portion 3x in a curved shape. It Moreover, since these vibrations are vibrations caused by the acoustic signal in a predetermined low frequency region,
Vibration of a frequency that is preferable for the user is given to the user.

Further, since the speaker 6 is elastically supported by the corrugated plate-like portion 9 of the partition plate 5, even if an unpleasant echo sound is generated due to cracking or distortion of the sound, this echo sound is not reproduced as described above. The corrugated plate-like portion 9 is flexibly deformed, and is appropriately absorbed,
The sound clarity will be improved. In addition, the air vibration causes the through holes 12 (or slits or the like) of the defining plate body 5.
There is also an advantage that the sound pressure is further increased by the effect of narrowing down the sound generated when passing through the.

Since the corrugated plate portion 9 which is an elastic supporting portion is formed on the defining plate 5 itself, and the outer peripheral edge portion of the defining plate 5 is directly fixed to the container body 4, The number of parts can be reduced, and the partition plate 5 can be easily attached, as compared with the case where the container body is attached via a cushioning material as in the related art. Further, with such a structure, the partition plate 5 is firmly attached to the container body 4, and there is no risk of the partition plate 5 falling off even if frequent vibrations occur.

Further, since the corrugated plate-shaped portion 9 has a corrugated shape having a plurality of annular concavities and convexes concentric with the opening 8 for mounting the speaker 6, elastic deformation easily occurs in the corrugated plate-shaped portion 9. Therefore, vibration of sufficient amplitude will occur.
Further, even if the corrugated plate-shaped portion 9 having the above-described shape is formed on the partition plate 5, the strength of the portion does not unduly decrease, so that it can sufficiently withstand frequent vibrations. You can

In the above embodiment, the invention of the present application is applied to the rucksack type acoustic sensor 1 which applies vibration to the player's back. The acoustic sensor of the type shown below is used. The present invention can be similarly applied to No. 1.

That is, as shown in FIG. 14, the present invention is applied to a pouch-type acoustic sensor 1 which is worn around the waist of a user using a waist belt 17.

As shown in FIG. 9, the acoustic sensor 1 has an oblong shape in which both side edges are slightly curved. The waist belt 17 attached to the acoustic sensor 1 is provided with the elastic stretchable belt 17a, and the through hole 17x is formed.
As shown in FIGS. 10 and 11, the point where the slab is formed and the internal structure of the acoustic sensor 1 are basically the same as those of the above-described embodiments. Also in this embodiment, the two cover members 7a and 7b may be integrated to form the holding case 7, and the container body 4 may be housed inside the holding case 7 (see FIG. 12). Alternatively, the front half case 2 may be omitted and the container main body may be configured by the back half case 3 and the defining plate 5. Therefore, referring to FIG. 9 to FIG. 14, the acoustic sensor 1 according to the above-described embodiment is used.
The same reference numerals are given to the common constituent elements with and the description thereof will be omitted.

In particular, also in this acoustic sensor 1, as shown in FIG. 10 or 12, the bottom surface portion 3x of the back half case 3 is curved so as to follow the shape of the waist peripheral portion of the body. It is formed so that the entire area of the bottom surface portion 3x can be maintained in uniform contact with the waist peripheral portion when worn on the body.

Further, as shown in FIG. 13, a corrugated plate-shaped portion 9 composed of a plurality of partial arcuate irregularities 9a which are concentric with the opening 8 is provided on the outer peripheral portion of the opening 8 of the defining plate 5. Has been formed. The speaker 6 is elastically supported by the partition plate 5 by the presence of the corrugated plate-shaped portion 9.

Since the acoustic sensor 1 is smaller than the acoustic sensors of the above-described embodiments, the same speaker 6 is used.
If this is used, since the acoustic sensor 1 is concentrated and transmitted to the periphery of the waist through the vibration transmitting surface having a smaller area, strong vibration can be locally obtained.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of an acoustic sensor according to the present invention.

FIG. 2 is a perspective view of parts disassembled arrangement of the acoustic sensor according to the embodiment.

FIG. 3 is an enlarged vertical side view taken along the line AA of FIG.

FIG. 4 is an enlarged vertical rear view taken along line BB in FIG.

FIG. 5 is a vertical cross-sectional view showing another example of attaching the body-worn belt of the acoustic sensor according to the embodiment, and is a diagram corresponding to FIG. 4;

FIG. 6 is a unitary plan view showing an defining plate-like body which is a constituent feature of the acoustic sensor according to the embodiment.

FIG. 7 is a schematic diagram showing a usage state of the acoustic sensor according to the embodiment.

FIG. 8 is a schematic diagram showing a usage state of the acoustic sensor according to the embodiment.

FIG. 9 is an external perspective view showing another embodiment of the acoustic sensor according to the present invention.

10 is an enlarged vertical side view taken along the line CC of FIG.

11 is an enlarged vertical rear view taken along the line D-D in FIG. 9. FIG.

12 is a vertical cross-sectional view showing another example of attaching the body-worn belt of the acoustic sensor according to the other embodiment, and FIG.
It is a figure corresponding to 0.

FIG. 13 is a unitary plan view showing an defining plate-like body which is a constituent feature of an acoustic sensor according to another embodiment.

FIG. 14 is a schematic diagram showing a usage state of an acoustic sensor according to another embodiment.

[Explanation of symbols]

 1 Acoustic sensor 2 Front half case 3 Back half case (container part) 3x Bottom part 4 Container body 5 Definition plate-like body 6 Speaker 8 Opening 9 Corrugated plate-like part

Claims (4)

[Claims] 1. A container body is composed of at least a container portion having a bottom surface portion on the side of contact with the body, and a defining plate-like body on which a speaker is mounted to define a sound generation space between the container portion and the container portion. In addition, in the acoustic sensation device configured to cause the bottom surface of the container portion to vibrate based on the sound emitted from the speaker, the bottom surface portion of the container portion is at least a portion corresponding to a contact portion with the body. Is formed in a curved shape so as to follow the shape of the contact portion of the body. 2. A container main body is composed of at least a container portion having a bottom surface portion on the side of contact with the body, and a defining plate-like body for mounting a speaker to define a sound generation space between the container portion and the container portion. In addition, in the acoustic sensation device configured to elastically support the speaker with respect to the container main body and to cause the bottom surface of the container portion to vibrate based on the sound emitted from the speaker, An acoustic sensor, wherein a corrugated plate portion that flexibly vibrates in conjunction with the speaker is formed on at least a part of the body. 3. The acoustic sensor according to claim 2, wherein a peripheral portion of the defining plate member is directly fixed to the container portion. 4. The corrugated plate-shaped portion has a corrugated shape composed of a plurality of annular concavities and convexes concentric with the speaker mounting opening formed in the defining plate-shaped body. The acoustic sensor according to item 3.