JPH08195994A - Bone-conduction earphone/microphone - Google Patents

Abstract

PURPOSE: To eliminate the need of inserting an earpiece or the like into an external auditory meatus by arranging the diaphragm of a bone-conduction voice vibration detector on a plane approximately the same as a necessary plane surrounding a cover and constituting a bone-conduction earphone microphone. CONSTITUTION: Viewing from the cover 2 for protecting a speaker unit, the diaphragm 1 of the vibration detection part of a bone-conduction vibration detector is disposed on the plane approximately the same as the plane on the entrance side of the external auditory meatus surrounding the cover 2. Thus, when this bone-conduction microphone is fitted to an ear, the diaphragm 1 is naturally brought into contact with an antitragus, a tragus or a concha hole near the antitragus. As the result, this bone-conduction earphone/microphone usable for a long time without giving the unpleasant feeling of pain or the like to a user without the need of inserting the detection part of the earpiece or the like inside the external auditory meatus is attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for detecting a voice vibration propagating when a user utters a voice, that is, a bone conduction voice vibration, from the ear wall, and a mechanism for converting this vibration into an electric signal. And a sound pressure type speaker are built into the same housing, and by mounting the housing on one of the ears, a bone conduction earphone microphone that enables both transmission and reception calls without using hands ( (Ear microphone).

[0002]

2. Description of the Related Art As a conventional communication device for detecting bone conduction voice vibration from an ear wall, for example, Japanese Patent Laid-Open No. 51-9.
As described in Japanese Patent No. 4218, there is one that inserts an earpiece incorporating a vibration detection mechanism into the external auditory meatus of the ear and presses the earpiece against the external auditory meatus wall to detect bone conduction voice vibration from the external auditory meatus wall. FIG. 61 is a view showing an example of this conventional example, in which the entire earpiece 62 having a vibration pickup 61 built therein is inserted into the ear canal to detect bone conduction voice vibration.

Further, the ear canal insertion type earpiece described in Japanese Patent Laid-Open No. 5-115092 has a bone conduction voice vibration detecting mechanism similar to that in Japanese Patent Laid-Open No. 51-94218, and has a receiving voice inside. Although it has a built-in earphone for transmission, the bone conduction voice vibration detection mechanism itself is basically based on detecting the bone conduction voice vibration from the wall of the ear canal by providing an ear canal insertion portion. FIG. 62 is a view showing an example of this conventional example, in which an ear canal insertion portion 71 also having a vibration pickup inside is inserted into the ear canal to detect bone conduction voice vibration.

In the case of another conventional example described in Japanese Patent Laid-Open No. 5-115092, the external auditory canal insertion portion has a cross section taken along the center plane including the direction of the external auditory canal, which is curved to match the bending of the external auditory canal. The ear canal insertion portion is formed to have a substantially symmetrical shape with respect to the center plane, and the ear canal insertion portion is composed of a constricted portion and a bulge portion having prescribed dimensions. It also discloses that a material having high adaptability on the living body side is selected as a material forming the earpiece. The purpose is to make sure that the ear canal-insertion type ear piece is worn on the ear more securely, and also to make it easier to put on and take off, and to reduce the feeling of foreign matter and discomfort that may occur during long-term use. is there.

[0005]

In the conventional example shown here, the earpiece (the external ear canal insertion portion) having the built-in vibration detection mechanism has a large diameter because the built-in vibration detection mechanism is provided, and therefore the ear canal is pushed. Since it is worn on the ears while unfolding, it often causes pain and discomfort inside the external auditory meatus, which is uncomfortable especially when used for a long time.

In order to reduce this pain or discomfort, the insertion portion is covered with a soft elastic member, or the ear piece itself is made to have a structure with excellent flexibility so as to match the bending angle of the ear canal. Although the device has been devised, it has not been able to eliminate the feeling of foreign matter and discomfort of the user due to individual differences in the shape of the ear canal, and is not suitable for long-term use. In addition, since the earpiece (external ear canal insertion part) itself is directly inserted into the ear, foreign matter such as earwax easily adheres, and it is necessary to clean the earpiece itself each time it is used to keep it clean. It was privately used.

[0007]

A bone conduction earphone microphone according to the present invention comprises at least a bone conduction voice vibration detector and a sound pressure type speaker unit in the same housing.
In addition, the vibration detection part of the bone conduction voice vibration detector is roughly the same as the speaker unit that generates the received voice as sound pressure toward the ear canal entrance and the surface of the cover for protecting the speaker unit that is closest to the ear canal entrance side. And a diaphragm arranged in a plane.

[0008]

The bone conduction earphone / microphone according to the present invention, when mounted on the ear, has a weight of a connecting cable for inputting / outputting a signal to / from the bone conduction earphone / microphone, and the weight of the bone conduction earphone / microphone itself, and thus the antitragus and tragus. It is pressed against the concha of the concha near the tragus and the tragus, but at this time, the speaker unit and the cover for protecting the speaker unit are placed in the same plane as the outer ear canal entrance side. Part or all of the vibrating plate
Since it contacts with the tragus or the concha of the concha near the tragus and the tragus, bone conduction vibration can be detected from this contact site. Therefore, it is not necessary to insert earpieces or the like into the external auditory meatus, and it is possible to greatly reduce the feeling of foreign matter and discomfort of the user, and it is possible to use for a long time and prevent foreign matter such as earwax from adhering. It is possible to keep the vibration detector clean.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The bone conduction earphone / microphone according to the present invention will now be described in more detail with reference to the embodiments shown in the drawings.

[Embodiment 1] FIG. 1 shows an embodiment of the present invention, in which 1 is a diaphragm serving as a vibration detecting portion of a bone conduction voice vibration detector, 2 is a cover for protecting a speaker unit, 3 is a housing for containing a speaker unit, a bone conduction voice vibration detector, a circuit, and the like inside, 4 is a cable internally having lead wires for enabling exchange of electric signals with the outside of the housing, and Shows a cover for protection. In the bone conduction earphone / microphone according to the present embodiment, the surface having the cover 2 for protecting the speaker unit has the concha of the ear of one of the ears, the tragus and the concha of the concha near the tragus and the tragus. It is used by mounting it on the. As shown in FIG. 1, a diaphragm 1, which serves as a vibration detecting portion of a bone conduction voice vibration detector, is roughly in the same plane as the surface of the ear canal entrance side as viewed from the cover 2 for protecting the speaker unit. Since it is arranged so as to surround the diaphragm, when the bone conduction microphone is attached to the ear, the diaphragm 1 is attached to the tragus, the tragus, or the concha of the concha near the tragus and the tragus. It is possible to contact part or all of the above without any difficulty. Therefore, it is not necessary to insert a detection unit inside the external auditory meatus, and bone conduction voice vibrations can be detected without causing discomfort to the user such as pain.
Enables long-term use.

[Embodiment 2] FIG. 37 shows an embodiment of the present invention. In the bone conduction earphone microphone according to the present embodiment, one of the surfaces having the cover 2 for protecting the speaker unit is provided. It is used by attaching to the tragus of the ear, the tragus, and the concha of the concha near the tragus and the tragus. As shown in FIG. 37, the diaphragm 1 that serves as the vibration detecting portion of the bone conduction voice vibration detector is viewed in the same plane as the surface closest to the ear canal entrance side, as viewed from the cover 2 for protecting the speaker unit. Because they are arranged side by side,
When this bone-conduction microphone is attached to the ear, the diaphragm 1 can be reasonably brought into contact with a part or all of the concha of the concha or the like in the vicinity between the antitragus and the tragus. Therefore, Example 1
As in the case of (1), there is no need to insert a detection unit inside the external auditory meatus, bone conduction vibrations can be detected without causing discomfort to the user such as pain, and long-term use is possible.

[Third Embodiment] This embodiment relates to an improvement in the arrangement of the diaphragm 1 in the second embodiment. Figure 40
, 21 is the ear canal of the human ear, and 22
Indicates the concha of the concha. FIG. 40 is a diagram showing a positional relationship between the diaphragm 1 and the ear when the bone conduction earphone microphone according to the present invention is mounted on the ear, as viewed from the back side of the bone conduction earphone microphone. When viewed from the back side, only the housing 3 and the cable 4 can be seen.
As shown in FIG. 40, when the bone conduction earphone microphone is mounted on the ear, the diaphragm 1 is arranged such that the position of the diaphragm faces the concha 2 of the concha, and the diaphragm 1 and the ear Very good elastic contact with the concha cavity 22 can be achieved.

[Embodiment 4] This embodiment relates to improvement of the position and shape of the diaphragm 1 in the first embodiment. In FIG. 2, reference numeral 5 denotes a speaker unit housed inside the housing 3. As shown in FIG. 2, the diaphragm 1
Of the cover 2 for protecting the speaker unit closer to the ear canal entrance than the portion of the cover 2 closest to the ear canal entrance, and the part of the housing 3 closest to the ear canal entrance. When the diaper is attached to the ear, the contact state with the antitragus of the diaphragm 1, the tragus, and any or all of the concha cavity near the tragus and the tragus is good. It becomes possible to do. Further, as shown in FIG. 3, the same effect can be obtained by forming a part of the diaphragm 1 so as to project toward the side closer to the ear canal entrance.

[Embodiment 5] This embodiment relates to improvement of the position and shape of the diaphragm 1 in the third embodiment. As shown in FIG. 38, the cover 2 for protecting the diaphragm unit of the diaphragm 1 is closer to the entrance to the ear canal than to the part closest to the entrance to the ear canal and the part of the housing 3 closest to the entrance to the ear canal. By protruding it to the side, when this bone conduction microphone is worn on the ear,
The contact state between the antitragus of the diaphragm 1 and a part or all of the concha cavity near the tragus can be made even better than in the case of the third embodiment. Further, as shown in FIG. 39, the same effect can be obtained by forming a part of the diaphragm 1 so as to project to the side closer to the entrance of the ear canal.

[Embodiment 6] This embodiment relates to an improvement in the method of connecting the diaphragm 1 to the housing in Embodiments 1 and 4. As shown in FIGS.
Is outside the outer peripheral portion of the speaker unit 5, the inner peripheral portion of which is connected to the housing 3, and the outer peripheral portion of the speaker unit 5 is also connected to the housing 3 to form a part of the outer surface of the housing. Other than the above, it is configured so as not to come into contact with the housing. With such a configuration, the vibration plate 1 can prevent the vibration due to the disturbance other than the bone conduction voice vibration from being easily spread.

[Embodiment 7] This embodiment is based on Embodiments 1, 4,
6 relates to the improvement of the connection method between the speaker unit 5 and the housing. In FIG. 4, reference numeral 6 denotes an earthquake-proof member provided between the housing 3, the speaker unit 5 and the cover 2 thereof. As shown in FIG. 4, the speaker unit 5 vibrates the surrounding casing 3 when the received voice is generated as sound pressure. However, since a vibration-proof member is provided between the speaker unit 5 and the casing 3, the propagation of such vibration is suppressed. can do. Therefore, it is possible to suppress the propagation of the vibration from the speaker unit 5 generated by the received voice to the diaphragm 1, and the diaphragm 1 can detect only the bone conduction voice vibration.

[Embodiment 8] This embodiment is based on Embodiments 2, 3,
5 relates to the improvement of the connection method between the speaker unit 5 and the housing 3. As shown in FIG. 41,
As in the case shown in the seventh embodiment, since the vibration-proof member 6 is provided between the speaker unit 5 and the housing 3, the propagation of vibration from the speaker unit 5 generated by the received voice to the diaphragm 1 is suppressed. Therefore, the diaphragm 1 can detect only bone conduction vibration.

[Embodiment 9] This embodiment is based on Embodiments 1, 4,
A mechanism for converting the vibration of the diaphragm 1 due to the bone conduction voice vibration in 6 or 7 to a change in the position of the bobbin is provided on the back surface of the diaphragm. In FIG. 5, 7 is a bobbin and 8 is a coil. As shown in FIG. 5, the bobbin around which the coil 8 is wound (hereinafter, simply referred to as bobbin)
As shown in FIG. 6, 7 is the back surface of the diaphragm (inside the housing).
Generally connected vertically. Although FIG. 6 shows the case where only one bobbin is connected, a plurality of similar bobbins may be arranged concentrically on the inner peripheral side or the outer peripheral side. In addition, as shown in FIGS. 8 and 9, the bobbin 9 (see FIG. 7), which is smaller than the width of the diaphragm, is also connected to the back surface of the diaphragm 1 (inside the housing) substantially vertically. But it's okay. With such a configuration, the bone conduction vibration detected by the diaphragm 1 can be converted into a change in the position of the bobbin in the anteroposterior direction toward the ear canal entrance.

[Embodiment 10] This embodiment is based on Embodiment 2,
A mechanism is provided on the back surface of the diaphragm 1 for converting the vibration of the diaphragm 1 due to the bone conduction voice vibration in 3, 5 or 8 into the position change of the bobbin. As shown in FIGS. 42 and 43, the bobbin is connected to the back surface of the diaphragm 1 (inside the housing) substantially vertically. 42 and 43 show the case where only one bobbin is connected, a plurality of similar bobbins may be arranged concentrically on the inner peripheral side or the outer peripheral side. With this configuration, as in the case of the ninth embodiment, the bone conduction vibration detected by the diaphragm 1 is
It can be converted into a position change of the bobbin in the front-back direction toward the entrance of the ear canal.

[Embodiment 11] This embodiment relates to an improvement of the method of connecting the bobbin to the back surface side (inside the housing) of the diaphragm 1 in the ninth embodiment. As shown in FIGS. 6 and 9, the bobbin connected to the diaphragm 1 is connected only to the back surface of the diaphragm 1 as shown in FIGS. 10 to 14, and should be in contact with the housing 3 or the speaker unit 5. It is arranged so that there is no. With this configuration, the bobbin changes its position only by the bone conduction vibration detected by the diaphragm 1. Further, even when the sound pressure level generated by the speaker unit 5 is very large, the bobbin is connected to the back surface of the diaphragm 1 substantially vertically and is arranged without contact with the housing. Even when the vibration generated from the speaker unit 5 propagates upward in the figure, the propagation direction thereof is substantially perpendicular to the bobbin, so that the position change of the bobbin due to such vibration can be made extremely small. In particular, when the speaker unit 5 is arranged on the center line of the diaphragm vertically connected to the back surface of the bobbin configured as shown in FIG. Since the distance to the middle upper bobbin and the distance to the lower bobbin in the figure are equal,
The vibration propagating from the speaker unit 5 is canceled out, and the effect of further reducing this vibration is provided.

[Embodiment 12] This embodiment relates to improvement of the method of connecting the bobbin to the diaphragm 1 in the tenth embodiment. As shown in FIG. 43, the bobbin connected to the diaphragm 1 is connected only to the back surface of the diaphragm 1 as shown in FIG. 44 so that the bobbin does not come into contact with the housing 3 or the speaker unit 5. Is located in. With this configuration, the bobbin changes its position only by the bone conduction vibration detected by the diaphragm 1.

[Embodiment 13] This embodiment corresponds to Embodiments 9 and 1.
1 is provided with a mechanism for converting the position change of the bobbin into an electric signal. As shown in FIGS. 14 and 15, reference numeral 10 denotes a magnet fixed to the housing. Since the magnet 10 is fixedly arranged on the housing on the side far from the outer ear when viewed from the bobbin (see FIG. 14), the bobbin causes a slight positional change before and after the bone conduction vibration detected by the diaphragm 1. When this occurs, it is possible to convert such mechanical vibration into an induced electromotive force induced by a change in the amount of magnetic flux from the magnet 10, which interlinks the coil wound around the bobbin.

[Embodiment 14] This embodiment is based on Embodiment 10,
A mechanism for converting the bone conduction voice vibration converted into the position change of the bobbin into an electric signal in the anteroposterior direction toward the entrance of the external auditory meatus is provided. FIG.
As shown in FIG. 5, since the magnet 10 is fixedly arranged on the housing on the side far from the outer ear when viewed from the bobbin, the bone conduction vibration detected by the diaphragm 1 is applied to the vibration as in the case of the thirteenth embodiment. When the bobbin causes a slight front-back position change, the mechanical vibration is converted into an induced electromotive force induced by a change in the amount of magnetic flux from the magnet 10 that links the coil wound around the bobbin. It is possible to do.

[Embodiment 15] This embodiment is another embodiment of Embodiment 13 and is provided with a mechanism for converting the position change of the bobbin into an electric signal in Embodiments 9 and 11. . As shown in FIG. 16, reference numeral 11 denotes a magnet incorporated in an electromagnetic induction type speaker having a magnet and a voice coil as its main components. 14 and 15 show an example in which the magnet 10 is newly arranged on the housing, but as shown in FIG. 16, an electromagnetic induction type speaker having a magnet and a voice coil as its main components is used as a speaker. By using, the magnet 11 built in the speaker of the electromagnetic induction type is used. Therefore, when the bobbin slightly changes its front-back position due to the bone conduction vibration detected by the diaphragm 1, such mechanical vibration is built into the speaker that links the coil wound around the bobbin. It is possible to convert the induced electromotive force induced by the change in the amount of magnetic flux from the generated magnet 11. In this case, there is no need to install a new magnet, which is effective for reducing the number of parts and simplifying the manufacturing process.

[Embodiment 16] This embodiment is another embodiment of Embodiment 14, in which bones are converted into bobbin position changes in the anteroposterior direction toward the ear canal entrance in Embodiments 10 and 12. A mechanism for converting the conducted sound vibration into an electric signal is provided. FIG. 45 shows that the magnet 10 is newly arranged on the housing. However, as shown in FIG. 46, an electromagnetic induction type speaker having a magnet and a voice coil as its main components is used as the speaker. By doing so, the magnet 11 built in the electromagnetic induction type speaker is used. Therefore, when the bobbin slightly changes its front-back position due to the bone conduction vibration detected by the diaphragm 1, the mechanical vibration is linked to the coil wound around the bobbin, and is built in the speaker. It is possible to convert the induced electromotive force induced by the change in the amount of magnetic flux from the generated magnet 11. In this case, there is no need to install a new magnet, which is effective for reducing the number of parts and simplifying the manufacturing process.

[Embodiment 17] This embodiment relates to an improvement in the number and arrangement of magnets in Embodiment 13. In FIGS. 17 and 18, reference numeral 12 denotes a second magnet newly provided near the portion closer to the outer ear when viewed from the bobbin. As shown in FIGS. 17 and 18, by arranging the first magnet 10 and the second magnet 12 near both ends of the bobbin, respectively, the two magnets are magnetically coupled and the spread of the magnetic flux is suppressed. Therefore, the amount of magnetic flux interlinking the coil 8 can be increased.
Since this increase in the amount of magnetic flux leads to an increase in induced electromotive force induced in the coil, higher output can be realized.
Further, when the second magnet 12 is provided on the surface (external ear canal side) of the diaphragm (see FIG. 18), as shown in FIG. 3, a part of the diaphragm 1 is divided into an antitragus, an tragus and an antitragus. The same effect as in the case of projecting in order to improve the contact state with any part or all of the concha cavity or the like in the vicinity of the tragus is also provided.

[Embodiment 18] This embodiment relates to an improvement in the number and arrangement of magnets in Embodiment 14. As shown in FIG. 47, by arranging the first magnet 10 and the second magnet 12 near both ends of the bobbin, the two magnets can be magnetically coupled and the spread of the magnetic flux can be suppressed. Therefore, the amount of magnetic flux interlinking the coil 8 can be increased. Since this increase in the amount of magnetic flux leads to an increase in induced electromotive force induced in the coil, higher output can be realized. When the second magnet 12 is provided on the surface (external ear canal side) of the diaphragm (see FIG. 47), as shown in FIG. 39, a part of the diaphragm 1 is placed near the ear tragus and the tragus. The same effect as in the case of projecting in order to improve the contact state with a part or all of the concha cavity etc. is also provided.

[Embodiment 19] This embodiment relates to an improvement in the number of magnets arranged and their positions in Embodiment 15. As shown in FIG. 19, as a speaker,
When an electromagnetic induction type speaker having a magnet and a voice coil as its main components is used, the speaker unit 5 is built into the speaker unit 5 by providing the second magnet 12 near the surface (on the ear canal side). By magnetically coupling the first magnet 10 and the second magnet 12 to each other, it is possible to suppress the spread of the magnetic flux, thereby increasing the amount of magnetic flux interlinking the coil 8. FIG.
As in the cases of Nos. 7 and 18, this increase in the amount of magnetic flux leads to an increase in the induced electromotive force induced in the coil, so that higher output can be realized.

[Embodiment 20] This embodiment relates to an improvement in the number and arrangement of magnets in Embodiment 16. As shown in FIG. 48, as a speaker,
By using an electromagnetic induction type speaker having a magnet and a voice coil as its main components, the magnet 11 incorporated in the electromagnetic induction type speaker is used as a first magnet, and the surface of the diaphragm 1 is By disposing the second magnet 12, it is possible to magnetically couple the two magnets and suppress the spread of the magnetic flux.
It is possible to increase the amount of magnetic flux interlinking. Since this increase in the amount of magnetic flux leads to an increase in induced electromotive force induced in the coil, higher output can be realized. When the second magnet 12 is provided on the surface of the diaphragm (the ear canal side) (see FIG. 4).
In order to improve the contact state of a part of the diaphragm 1 with a part or all of the concha of the concha, etc. near the tragus and the tragus, as shown in FIG. 39. The same effect as when projecting is given.

[Embodiment 21] This embodiment is based on Embodiment 1,
In Example 9, the magnets are arranged in place of the bobbin connected to the back surface of the diaphragm 1 (inside the housing) while sharing the arrangement, shape, connection to the housing, etc. of the diaphragm 1 in 4, 6, or 7. It is characterized by having done. As shown in FIGS. 25 and 26, reference numeral 13 denotes a magnet connected to the diaphragm 1. As shown in FIGS. 25, 26, and 27, at least one magnet 13 is the back surface of the diaphragm 1 (inside the housing).
To be connected to the housing without contacting it. With such a configuration, the bone conduction vibration detected by the diaphragm 1 is transmitted in the front-back direction toward the ear canal entrance.
3 can be converted to a position change, and accordingly, the magnetic field in the vicinity of the magnet 13 can be changed.

[Embodiment 22] This embodiment is based on Embodiment 2,
In the tenth embodiment, a magnet is arranged in place of the bobbin connected to the back surface (inside the housing) of the diaphragm 1 while sharing the arrangement, shape, connection to the housing, and the like of the diaphragm 1 in 3, 5, or 8. It is characterized by having done. As shown in FIG. 49, at least one magnet 13 is connected to the rear surface (inside the housing) of the diaphragm 1 without contacting the housing or the like. With this configuration, the bone conduction vibration detected by the diaphragm 1 can be converted into a change in the position of the magnet 13 in the anteroposterior direction toward the entrance of the ear canal, and accordingly, the vicinity of the magnet 13 can be changed. The magnetic field of can be changed.

[Embodiment 23] This embodiment is provided with a mechanism for converting a positional change of the magnet 13 connected to the back surface (inside the housing) of the diaphragm 1 in Embodiment 21 into an electric signal. It is a thing. In FIG. 28, reference numeral 14 denotes a coil fixed to the housing. As shown in FIG. 28, when viewed from the magnet 13 connected to the back surface of the diaphragm 1, the coil 14 is fixedly arranged on the housing on the side far from the outer ear, so the magnet 13 is detected by the diaphragm 1. When converting the generated bone conduction vibration into a magnetic field change in the vicinity of the magnet 13, such a magnetic field change can be converted into an induced electromotive force induced by a change in the amount of magnetic flux interlinking the coil 14.

[Embodiment 24] In this embodiment, in order to convert the bone conduction audio signal converted into the position change of the magnet 13 in the anteroposterior direction toward the entrance of the ear canal into the electric signal in Embodiment 22. The mechanism is provided. As shown in FIG. 50, when viewed from the magnet 13 connected to the back surface of the diaphragm 1, the coil 14 is fixedly arranged on the housing on the side far from the outer ear, so the magnet 13 is detected by the diaphragm 1. When converting the generated bone conduction vibration into a magnetic field change in the vicinity of the magnet 13, such a magnetic field change can be converted into an induced electromotive force induced by a change in the amount of magnetic flux interlinking the coil 14.

[Embodiment 25] This embodiment relates to an improvement in the number and arrangement of magnets in Embodiment 23. In FIG. 29, reference numeral 15 denotes a second magnet newly provided on the housing on the side far from the outer ear when viewed from the coil 14. As shown in FIG. 29, the coil 14 is structured so as to be sandwiched between the first magnet 13 and the second magnet 15, and the first magnet 13 and the second magnet 15 are magnetically coupled to each other. Since the spread of the magnetic flux can be suppressed, the amount of magnetic flux interlinking the coil 14 can be increased. Since such an increase in the amount of magnetic flux leads to an increase in induced electromotive force induced in the coil, higher output can be realized.

[Embodiment 26] This embodiment relates to improvement of the number of magnets arranged and the positions thereof in Embodiment 24. As shown in FIG. 51, the coil 14
Since the first magnet 13 and the second magnet 15 are magnetically coupled to each other by suppressing the spread of the magnetic flux, the coil 13 and the second magnet 15 are sandwiched between the first magnet 13 and the second magnet 15. The amount of magnetic flux interlinking 14 can be increased. Since such an increase in the amount of magnetic flux leads to an increase in induced electromotive force induced in the coil, higher output can be realized.

[Embodiment 27] This embodiment is another embodiment of Embodiment 25 and relates to improvement of the number of magnets arranged and their positions in Embodiment 23. Figure 30
As shown in FIG. 29, when an electromagnetic induction type speaker having a magnet and a voice coil as its main components is used as the speaker, the magnet 11 built in the speaker unit 5 is changed to the second shown in FIG. Can be used as a substitute for the magnet 15 of FIG.
The amount of magnetic flux interlinking 4 can be increased. FIG. 29
Similar to the case shown in (1), since the increase in the amount of magnetic flux leads to the increase in the induced electromotive force induced in the coil, higher output can be realized. Further, in this case, since it is not necessary to install a new magnet, it is possible to reduce the number of parts and simplify the manufacturing process.

[Embodiment 28] This embodiment is another embodiment of Embodiment 26 and relates to an improvement in the number of magnets arranged and their positions in Embodiment 22. Figure 52
As shown in FIG. 51, when an electromagnetic induction type speaker having a magnet and a voice coil as its main components is used as the speaker, the magnet 11 built in the speaker unit 5 is changed to the second shown in FIG. Can be used as a substitute for the magnet 15 of FIG.
The amount of magnetic flux interlinking 4 can be increased. FIG. 51
Similar to the case shown in (1), since the increase in the amount of magnetic flux leads to the increase in the induced electromotive force induced in the coil, higher output can be realized. Further, in this case, since it is not necessary to install a new magnet, it is possible to reduce the number of parts and simplify the manufacturing process.

[Embodiment 29] This embodiment is based on Embodiment 1,
In the ninth embodiment, in place of the bobbin connected to the back surface of the diaphragm 1 (inside the housing), electrodes and electrodes are provided in common while the arrangement, shape, connection to the housing, and the like of the diaphragm 1 in 4, 6, or 7 are common. It is characterized in that an electret film provided thereon is arranged. In FIG. 31, 16 is an electrode connected to the back surface of the diaphragm 1 (inside the housing), and 17 is an electret film formed on the electrode 16. As shown in FIG. 31, at least a part of the back surface (inside the housing) of the diaphragm 1 is provided with a portion where the electrode 16 and the electret film 17 are formed without contacting the housing or the like. With this configuration, the bone conduction vibration detected by the diaphragm 1 can be converted into a position change in the front-back direction toward the ear canal entrance, which is generated by the electrode 16 and the electret film 17.

[Embodiment 30] This embodiment is based on Embodiment 2,
In place of the bobbin connected to the back surface (inside the housing) of the diaphragm 1 in the tenth embodiment, the electrode and its electrode are used in common with the arrangement, shape, connection to the housing, etc. of the diaphragm 1 in 3, 5, or 8. It is characterized in that the electret film provided above is arranged. As shown in FIG. 53, at least a part of the back surface (inside the housing) of the diaphragm 1 is provided with a portion where the electrode 16 and the electret film 17 are formed without contacting the housing or the like. With this configuration, the bone conduction vibration detected by the diaphragm 1 can be converted into a position change in the front-back direction toward the ear canal entrance, which is generated by the electrode 16 and the electret film 17.

[Embodiment 31] This embodiment is provided with a mechanism for converting the positional change in the front-back direction toward the entrance of the ear canal, which is caused by the electrode 16 and the electret film 17, in Embodiment 29 into an electric signal. It is a thing. FIG.
In FIG. 18, 18 is the electrode 16 and the electret film 1.
7 shows a second electrode having an area substantially the same as that of No. 7 and fixed on the housing on the side far from the outer ear when viewed from the electrode 16 and the electret film 17 so as to face each other. In FIG. 32, since the second electrode 18 is provided in such an arrangement, the bone conduction vibration detected by the diaphragm 1 is generated by the electrode 16 and the electret membrane 17 in the anteroposterior direction toward the ear canal entrance. When converted into a position change, this position change can be converted into a voltage change between the two electrodes 16 and 18 facing each other. FIG. 33 shows an example in which the shape of the electrode 16 and the electret film 17 connected to the back surface (inside the housing) of the diaphragm 1 is a circle whose diameter does not exceed the width of the diaphragm. 19 shows an example 19 of a constituent unit when the second electrode 18 having the same area as the electrode 16 and the electret film 17 is provided so as to face the electret film 17. In this case, as shown in FIGS.
A combination 19 of two electrodes and an electret film as shown in FIG. 33 can be provided on the back surface (inside the housing) of the.

[Embodiment 32] This embodiment is provided with a mechanism for converting a positional change, which is generated by the electrode 16 and the electret film 17 in the embodiment 30 in the anteroposterior direction toward the entrance of the ear canal, into an electric signal. It is a thing. Figure 5
4, the electrode 16 and the electret film 17 are provided.
Since the second electrode 18 is provided so as to face the housing on the side far from the outer ear, the bone conduction vibration detected by the diaphragm 1 is generated by the electrode 16 and the electret film 17. When converted into a position change in the front-back direction toward the entrance, this position change can be converted into a voltage change between the two electrodes 16 and 18 facing each other.

[Embodiment 33] This embodiment is another embodiment of the mechanism for converting the positional change in the front-back direction toward the entrance of the ear canal, which is caused by the electrode 16 and the electret film 17, in the embodiment 29 into an electric signal. This is an example and relates to the improvement of the size of the facing electrodes in the example 31. In FIG. 36, 20 indicates a second electrode which is also fixed on the housing. As shown in FIG. 36, a first electrode 16 and an electret film 17 are formed on the back surface (inside the housing) of the diaphragm 1 over substantially the entire surface thereof. The electrode 16 and the electret film 17 are formed. A new second electrode 20 is provided on the housing so as to face a part of the. With such a configuration, when arranging a plurality of constituent units 19 including two electrodes and an electret film as shown in FIG. 33 on the back surface of the diaphragm 1,
In order to make the electrostatic capacities substantially the same, it is necessary to make the two electrodes 16 and 18 face each other exactly. In the case of FIG. 36, however, the second electrode 20 is placed on the back surface of the diaphragm 1. Therefore, at any position, the first electrode 1
Since the area where 6 and the electret film 17 provided thereon face each other is equal to the area of the second electrode 20, the complicated work can be extremely simplified.

[Embodiment 34] This embodiment is another embodiment of the mechanism for converting the positional change in the anteroposterior direction toward the ear canal entrance, which is caused by the electrode 16 and the electret film 17, in Embodiment 30 into an electric signal. Example 32 relates to an improvement in the size of the facing electrodes in Example 32. As shown in FIGS. 55 and 56, the first electrode 16 and the electret film 17 are formed on the back surface (inside the housing) of the diaphragm 1 over substantially the entire surface thereof. A new second electrode 20 is provided on the housing so as to face a part of the film 17. With such a configuration, when the constituent unit 19 including the two electrodes and the electret film as shown in FIG. 33 is arranged on the back surface of the diaphragm 1 as shown in FIG. Since they are almost the same, it is necessary to work the two electrodes 16 and 18 to face each other exactly. However, in the case of FIG. 55, the second electrode 20 is on the back surface of the diaphragm 1, so at any position. In addition, since the area where the first electrode 16 and the electret film 17 provided on the first electrode 16 face each other is equal to the area of the second electrode 20, the complicated work can be extremely simplified.

[Embodiment 35] This embodiment is the same as the embodiment 1,
In the ninth embodiment, an elastic member is used instead of the bobbin connected to the back surface of the diaphragm 1 (inside the housing) while sharing the arrangement, shape, connection to the housing, and the like of the diaphragm 1 in 4, 6, or 7. A piezoelectric element connected to the elastic member is provided. As shown in FIG. 58, 23 is an elastic member connected to the back surface (inside the housing) of the diaphragm 1, and 24 is a piezoelectric element connected to the elastic member 23. With this structure, the bone conduction vibration detected by the diaphragm 1 is transmitted through the elastic member 23 to the piezoelectric element 24.
Is transmitted to Since the piezoelectric element 24 shown in FIG. 58 has a beam structure, the transmitted vibration of the diaphragm 1,
That is, due to bone conduction voice vibration, the piezoelectric element 24 vibrates with the connection point with the elastic member 23 as a fixed point. The vibration of the piezoelectric element 24 causes the deformation of the piezoelectric element 24, so that a potential due to polarization is generated on both surfaces of the piezoelectric element 24. Therefore, with the configuration shown in FIG. 58, it is possible to convert the bone conduction voice vibration into an electric signal.

[Embodiment 36] This embodiment is the same as Embodiment 2,
In Example 10, the elastic member, instead of the bobbin, is connected to the back surface of the diaphragm 1 (inside the housing) in common with the arrangement, shape, connection to the housing, etc. of the diaphragm 3 in 3, 5, or 8. And a piezoelectric element connected to the elastic member. As shown in FIG. 59, 23 is an elastic member connected to the back surface (inside the housing) of the diaphragm 1, and 24 is a piezoelectric element connected to the elastic member 23. With such a structure, as in the case of the thirty-fifth embodiment, it is possible to convert the bone conduction voice vibration into an electric signal. In addition, in the present embodiment and the 35th embodiment,
Although only the case where the piezoelectric element 24 has a beam shape is shown, a shape in which the piezoelectric element 24 is deformed by the vibration of the diaphragm 1 as in these examples, for example, FIG.
As shown in FIG. 5, the same effect can be obtained even if the piezoelectric element 24 has a disc shape and only the central portion thereof is connected to the elastic member 23.

[Embodiment 37] This embodiment is the same as embodiment 35,
36 relates to the improvement of the connecting direction of the piezoelectric element 24. As shown in FIGS. 58, 59, and 60, by making the main vibration direction of the piezoelectric element 24 substantially coincide with the main vibration direction of the diaphragm 1, The amount of deformation accompanying the vibration of the element 24 is increased to generate a larger potential.

[Embodiment 38] This embodiment is the same as Embodiment 1,
2, 3, 4, 5, 6, 7 or 8 while sharing the arrangement, shape, connection to the housing, etc. of the diaphragm 1.
The vibrating plate 1 is formed by using a piezoelectric material. The diaphragm 1 shown in FIG. 2 or FIG. 38 is made of a piezoelectric material, so that the diaphragm 1 is vibrated by bone conduction sound vibration.
However, when vibrating and deforming, an electric potential is generated on both sides of the diaphragm 1 as in the case of Examples 35 and 36, and therefore bone conduction voice vibration can be converted into an electric signal. In addition, since the diaphragm 1 itself is a piezoelectric material, the third embodiment
A mechanism for aligning the main vibration direction of the piezoelectric element with the main vibration direction of the vibration plate 1 shown in 7 is not required, a large sensitivity can be obtained, and the number of parts can be reduced and the manufacturing process can be simplified.

[Embodiment 39] This embodiment is equivalent to Embodiments 9 to 2.
8 relates to an improvement in winding method of the conductive wire forming the coil 8. In FIG. 20, the coil wound around the bobbin is so-called bifilar winding in which two conductive wires of the same kind are wound at the same time. With this configuration, it is possible to obtain the desired number of turns with roughly half the labor and time.

[Embodiment 40] This embodiment relates to an improvement of the method for connecting the four terminals of the bifilar-wound coil in the embodiment 39. As shown in FIG. 21, two of the four terminals of the bifilar-wound coil are arranged so that the coil has a structure in which the right-handed coil and the left-handed coil are connected at the central portion. Connecting. This connection is shown in FIG. 22 as a circuit diagram. With such a configuration, when the amount of magnetic flux that links the coils changes, each coil has the same size as indicated by I1 and I2 in the drawing. Since the current flows in, the two terminals (a in the figure) connected to each other can be the center, and the remaining two terminals (a, b in the figure) can have electrically opposite-phase voltage outputs. .

[Embodiment 41] This embodiment is an improvement of the method for processing the electric output of the coil in the embodiment 42. As shown in FIG. 22, the potential at the point a is changed to E
Assuming that the potential at points a and b is Eb, as shown in FIG. 23, by providing a differential amplifier using the voltage at these two points as an input voltage, the output voltage Eou of this differential amplifier is provided.
As t, Eout = (Eb−Ea) × (R2 / R1)
You can get the output. Here, since Ea = −Eb, after all, Eout = 2 × Eb × (R2 / R1)
Becomes At this time, voltage changes (main signals) caused by changes in the amount of magnetic flux originating from bone conduction vibration are electrically converted into signals having mutually opposite phases, and are input to the differential amplifier to be amplified. However, so-called electrical noise of the circuit system is not caused by the coil terminal connection method and is input to the differential amplifier as a signal of the same phase, so the signal due to this noise is canceled out, and as a result, the differential Amplifier output Eou
At t, a low noise signal obtained by amplifying the main signal can be obtained.

[Embodiment 42] This embodiment relates to an improvement in the differential amplifier output processing method in the embodiment 41 and an improvement in the voltage output processing method in the embodiments 31 to 38. 24 shows an embodiment of the present invention with respect to the embodiment 43. As shown in FIG. 9, a plurality of bobbins 9 smaller than the width of the diaphragm around which the coil is wound are provided on the back surface of the diaphragm 1. In the case of individual connection, it is shown that an output of each individual coil is input to the above-mentioned differential amplifier, and an adder circuit surrounded by a broken line in FIG. 24 is provided to add the outputs to each other. There is. With this configuration, not only the output can be increased, but also it is possible to adjust the resistors for controlling the degree of addition with respect to the total output of the differential amplifiers provided in the adder circuit. Can be adjusted. Specifically, priority is given to the output of the coil of the part that has good contact with some or all of the antitragus, the tragus, and the concha cavity near the tragus and the tragus. Then
It is possible to make adjustments such as not adding the outputs of the parts in poor contact.

[0052]

As described above, according to the bone conduction earphone / microphone of the present invention, the bone conduction voice vibration is not detected from the ear canal wall inside the external auditory meatus, but rather the antitragus, the tragus and the antitragus and the tragus. Since there is a mechanism to detect from the concha of the ear concha in the meantime, it is not necessary to insert the vibration detector into the external auditory meatus,
Therefore, it can be used without feeling the pain in the external ear canal, the feeling of foreign matter, etc., and the foreign matter such as earwax can be prevented from adhering without any special cleaning, and the clean state can be maintained.

Further, regarding the mechanism for converting the detected bone conduction voice vibration into an electric signal, it is possible to realize high sensitivity and low noise by disposing a plurality of conversion mechanisms or by processing on an electric circuit. it can.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an entire bone conduction earphone microphone showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA ′ in FIG. 1, showing the position of the diaphragm.

3 is a cross-sectional view taken along the line AA ′ in FIG. 1, showing the position and shape of the diaphragm.

FIG. 4 is a view showing the position of the seismic isolation member, which is AA ′ in FIG.
It is sectional drawing.

FIG. 5 is a schematic diagram showing a positional relationship between a diaphragm and a bobbin around which a coil is wound.

FIG. 6 is a schematic view showing a connection form between a diaphragm and a bobbin around which a coil is wound.

FIG. 7 is a schematic diagram showing a coil-wound bobbin having a diameter smaller than the width of the diaphragm.

8 is a schematic diagram showing a positional relationship between the diaphragm and the bobbin around which the coil is wound in FIG. 7. FIG.

9 is a schematic view showing a connection form between the diaphragm and the bobbin around which the coil is wound in FIG. 7. FIG.

10 is a cross-sectional view taken along the line AA ′ in FIG. 1, showing the positional relationship between the diaphragm and the housing and the bobbin wound with the coil shown in FIG.

11 is a vertical cross-sectional view in FIG. 1 showing the positional relationship between the diaphragm and the housing and the bobbin around which the coil is wound, shown in FIG.

12 is a cross-sectional view taken along the line AA ′ in FIG. 1, showing the positional relationship between the diaphragm and the housing and the bobbin wound with the coil shown in FIG. 7.

13 is a vertical cross-sectional view in FIG. 1 showing the positional relationship between the diaphragm and the housing and the bobbin wound with the coil shown in FIG. 7.

FIG. 14 is a vertical cross-sectional view in FIG. 1 showing the arrangement of magnets.

15 is a vertical cross-sectional view in FIG. 1 showing the arrangement of magnets.

16 is a vertical cross-sectional view in FIG. 1 showing the arrangement of magnets built in the electromagnetic induction speaker.

FIG. 17 is a vertical cross-sectional view in FIG. 1 showing an arrangement of second magnets.

FIG. 18 is a vertical cross-sectional view in FIG. 1 showing an arrangement of second magnets.

19 is a vertical cross-sectional view in FIG. 1 showing the arrangement of second magnets.

FIG. 20 is a schematic diagram illustrating how to wind a coil (bifilar winding).

FIG. 21 is a schematic view showing a method of connecting coil terminals.

FIG. 22 is a circuit diagram showing the direction of current flowing through a coil.

FIG. 23 is a circuit diagram showing a method of connecting a differential amplifier and a coil terminal.

FIG. 24 is a circuit diagram showing an adder circuit.

FIG. 25 is a schematic diagram showing a positional relationship between a magnet and a diaphragm in the bone conduction earphone / microphone according to the second embodiment of the present invention.

FIG. 26 is a schematic diagram showing a connection form between a magnet and a diaphragm in the bone conduction earphone microphone according to the second embodiment of the present invention.

27 is a cross-sectional view taken along the line AA ′ in FIG. 1 showing the positional relationship between the diaphragm and the housing and the magnet shown in FIG. 25.

28 is a vertical cross-sectional view in FIG. 1 showing the arrangement of coils.

FIG. 29 is a vertical cross-sectional view in FIG. 1 showing the arrangement of second magnets.

FIG. 30 is a vertical cross-sectional view in FIG. 1 showing the arrangement of magnets incorporated in an electromagnetic induction speaker serving as a second magnet.

FIG. 31 is a cross-sectional view taken along the line AA ′ in FIG. 1, showing a connection form between the electrode and the electret film and the vibration plate.

FIG. 32 is a vertical cross-sectional view in FIG. 1 showing a connection form of opposing electrodes and a diaphragm to which the electrodes and the electret film are connected.

FIG. 33 is a schematic diagram showing a positional relationship between two electrodes and an electret film.

FIG. 34 is a schematic diagram showing the positional relationship between the diaphragm, the two electrodes shown in FIG. 33, and the electret film.

FIG. 35 is a schematic diagram showing a connection form between the diaphragm, the two electrodes shown in FIG. 33, and the electret film.

FIG. 36 is a schematic view showing a connection form of a diaphragm, two electrodes, and an electret film.

FIG. 37 is a schematic view showing an entire bone conduction earphone microphone showing an embodiment of the present invention.

38 is a B- in FIG. 37 showing the position of the diaphragm.
It is a B'cross section.

39 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing the position and shape of the diaphragm.

FIG. 40 is a schematic diagram showing the positional relationship between the diaphragm and the ears when the bone conduction earphone microphones of Examples 4, 5, and 6 in FIG. 37 are mounted on the ears.

41 is a B- in FIG. 37 showing the position of the earthquake-proof material
It is a B'cross section.

FIG. 42 is a schematic view showing a connection form between a diaphragm and a bobbin around which a coil is wound.

43 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing a connection form between the diaphragm and the bobbin around which the coil is wound.

44 is a transverse cross-sectional view of FIG. 37 showing a connection form between the diaphragm and the bobbin around which the coil is wound.

45 is a cross-sectional view in FIG. 37 showing the arrangement of magnets.

FIG. 46 is a transverse cross-sectional view of FIG. 37 showing the arrangement of magnets incorporated in the electromagnetic induction speaker.

FIG. 47 is a cross-sectional view in FIG. 37 showing the arrangement of second magnets.

48 is a cross-sectional view of FIG. 37 showing the arrangement of second magnets.

FIG. 49 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing the connection form between the diaphragm and the magnet.

[FIG. 50] B- in FIG. 37 showing the arrangement of coils
It is a B'cross section.

FIG. 51 B in FIG. 37 showing the arrangement of the second magnets
It is a -B 'sectional view.

52 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing the positions of the magnets incorporated in the electromagnetic induction type speaker as the second magnet.

53 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing a connection form between the diaphragm and the electrodes and the electret film.

54 is a view showing the positional relationship between the diaphragm, the electrodes and the electret film, and the second electrode, which is indicated by B- in FIG.
It is a B'cross section.

FIG. 55 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing a connection form between the diaphragm and the electrodes and the electret film.

FIG. 56 is a view showing a positional relationship between the diaphragm, the electrode and the electret film, and the second electrode, which is indicated by B- in FIG. 37.
It is a B'cross section.

57 is a view showing a positional relationship between the diaphragm, the electrodes and the electret film, and the second electrode, which is indicated by B- in FIG. 37;
It is a B'cross section.

FIG. 58 is a cross-sectional view taken along the line AA ′ in FIG. 1 showing a connection form between the elastic member and the piezoelectric element and the vibration plate.

FIG. 59 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing a connection form between the elastic member and the piezoelectric element and the vibration plate.

FIG. 60 is a cross-sectional view taken along the line BB ′ in FIG. 37 showing a connection form between the elastic member and the piezoelectric element and the vibration plate.

FIG. 61 is a conventional example in Japanese Patent Application Laid-Open No. 51-94218.

FIG. 62 is a conventional example in Japanese Patent Laid-Open No. 5-115092.

[Explanation of symbols] 1 diaphragm, 2 cover, 3 housing, 4 connection cord,
5 speaker unit, 6 seismic isolation member, 7 bobbin, 8
Coil, 9 bobbin, 10 magnet, 11 magnet built in the electromagnetic induction type speaker, 12 second magnet, 13
Magnet, 14 coil, 15 second magnet, 16 electrode,
17 electret film, 18 second electrode, 19 combination of two electrodes and electret film, 20 second
Electrode, 21 external auditory meatus, 22 concha cavity, 23 elastic member, 24 piezoelectric element.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuka Oki 5-1-1, Ofuna, Kamakura-shi, Personal Information Equipment Development Laboratory, Mitsubishi Electric Corporation (72) Eiichi Kuroda 5-1-1, Ofuna, Kamakura Mitsubishi Electric Corporation Personal Information Equipment Development Laboratory

Claims (26)

[Claims] 1. A bone conduction voice vibration detector and a sound pressure type speaker unit are provided in the same housing, and the housing is provided with a tragus of one ear, an tragus, and an ear near the tragus and the tragus. A bone conduction earphone / microphone capable of both transmitting and receiving calls when mounted near the concha cavity, wherein the vibration detecting portion of the bone conduction voice vibration detector faces the ear canal entrance. The speaker unit for generating the received voice as sound pressure and the cover for protecting the speaker unit are arranged so as to surround the outer peripheral portion of the speaker unit in substantially the same plane as the outermost ear canal entrance side surface. The bone conduction earphone microphone, comprising a diaphragm. 2. A bone conduction voice vibration detector and a sound pressure type speaker unit are provided in the same housing, and the housing has a tragus of one ear, an tragus, and an ear near the tragus and the tragus. A bone conduction earphone / microphone capable of both transmitting and receiving calls when mounted near the concha cavity, wherein the vibration detecting portion of the bone conduction voice vibration detector faces the ear canal entrance. It is composed of the speaker unit that generates received voice as sound pressure, and the diaphragms that are arranged side by side in the same plane as the outermost ear canal entrance side surface of the cover that protects the speaker unit. The bone conduction earphone microphone. 3. The vibration plate constituting the vibration detection unit is arranged at a position where it can be elastically contacted with the concha of the concha of the ear when the bone conduction earphone microphone is mounted on the ear. Item 2. The bone conduction earphone microphone according to Item 2. 4. At least a part of the diaphragm that constitutes the vibration detection unit is located at a position closer to an ear canal than a part of the cover for protecting the speaker unit and the speaker unit, and the housing. The bone conduction earphone microphone according to claim 1, wherein the bone conduction earphone microphone protrudes toward a side closer to the ear canal than a portion closest to the ear canal. 5. The vibration plate constituting the vibration detection unit is outside the outer peripheral portion of the speaker unit, the inner peripheral portion of which is connected to the housing, and the outer peripheral portion of the diaphragm is also connected to the housing. The bone conduction earphone microphone according to claim 1, 2, 3 or 4, which constitutes a part of an outer surface of the housing so as not to come into contact with the housing other than this part. 6. The vibration plate constituting the vibration detection unit is connected only to the housing, and the speaker unit is provided between the housing and the housing and the speaker unit. The bone conduction earphone microphone according to claim 1, wherein the bone conduction earphone microphone is connected only via a vibration-proof member. 7. At least one bobbin, around which a coil made of a conductive wire is wound, is provided on the back surface (inside the housing) of the diaphragm that constitutes the vibration detection unit, with respect to the surface of the diaphragm. Claim 1 which is connected vertically,
The bone conduction earphone microphone according to 2, 3, 4, 5 or 6. 8. All the bobbins around which the coil connected to the back surface of the diaphragm is wound do not come into contact with the housing, the speaker, etc. other than the back surface of the diaphragm. The bone conduction earphone microphone according to claim 7. 9. The bone conduction earphone / microphone according to claim 7, wherein, in the bone conduction earphone / microphone, a magnet is fixedly disposed on the housing on a side farther from the outer ear when viewed from the bobbin. 10. In the bone conduction earphone microphone,
In addition to the magnet fixed on the housing on the side far from the outer ear when viewed from the bobbin, another magnet is fixedly disposed near a portion near the outer ear when viewed from the bobbin. 9. The bone conduction earphone microphone according to item 9. 11. In the bone conduction earphone microphone,
The bone conduction earphone microphone according to claim 7 or 8, wherein an electromagnetic induction type speaker including a magnet and a voice coil as main components is used as the speaker. 12. In the bone conduction earphone microphone,
The bone conduction earphone microphone according to claim 11, wherein, in addition to the magnet of the speaker, another magnet is fixedly arranged near a portion near the outer ear when viewed from the bobbin. 13. In the bone conduction earphone microphone,
The bone conduction earphone microphone according to claim 1, wherein at least one of the magnets is connected to a back surface (inside the housing) of the diaphragm that constitutes the vibration detection unit. . 14. The bone conduction earphone microphone according to claim 13, wherein a coil fixed to the housing without contacting the magnet is provided in the vicinity of the magnet connected to the back surface of the diaphragm. Bone conduction earphone microphone. 15. In the bone conduction earphone microphone,
At least the magnet connected to the back surface of the diaphragm,
The coil, which is composed of a pair of another magnet separated from the magnet, and is fixed to the housing at a substantially equal distance from each of the pair of magnets without contacting any of the magnets. The bone conduction earphone microphone according to claim 14, further comprising: 16. In the bone conduction earphone microphone,
The bone conduction earphone microphone according to claim 14, wherein the electromagnetic induction type speaker including the magnet and the voice coil as main components is used as the speaker. 17. The bone conduction earphone / microphone,
On the back surface (inside the housing) of the vibration plate that constitutes the vibration detection unit, there is at least a part of an electrode surface made of a conductor and a region where an electret film is formed on the electrode surface. The bone conduction earphone microphone according to claim 1, 2, 3, 4, 5 or 6. 18. In the bone conduction earphone microphone,
18. The electrode surface and the portion on which the electret film is formed are opposed to each other without coming into contact with the electrode and the electret film, and are provided with electrode surfaces of approximately the same area fixed to the housing. Bone conduction earphone microphone. 19. In the bone conduction earphone microphone,
On the back surface (inside the housing) of the diaphragm, the electrode surface made of the conductor is formed, and the electret film is formed on the electrode surface over substantially the entire back surface of the diaphragm. The bone conduction according to claim 7, wherein at least one electrode surface fixed to the housing and having an area smaller than that of the electrode is provided so as to partially face the surface without contacting the electret membrane. Earphone microphone. 20. In the bone conduction earphone microphone,
An elastic member and a piezoelectric element connected to the elastic member are arranged on the back surface (inside the housing) of the vibration plate forming the vibration detection unit. Alternatively, the bone conduction earphone microphone according to 6 above. 21. In the bone conduction earphone microphone,
21. The bone conduction earphone microphone according to claim 20, wherein the main vibration direction of the piezoelectric element attached to the elastic member is in a plane substantially vertical to the ear canal. 22. In the bone conduction earphone microphone,
The bone conduction earphone microphone according to claim 1, 2, 3, 4, 5, or 6, wherein the vibrating plate constituting the vibration detecting section is made of a piezoelectric material. 23. The coil wound around a bobbin is wound by a winding method called a so-called bifilar winding in which two conductive wires of the same kind are wound at the same time. The bone conduction earphone microphone according to item 14, 15, or 16. 24. In the bone conduction earphone microphone,
Two terminals of the four terminals of the coil bifilar wound on each bobbin are connected so that the coil is connected in the center with two coils with the same number of turns, right winding and left winding. 24. The bone conduction earphone microphone according to claim 23. 25. In the bone conduction earphone microphone,
Electrically appearing inside the housing, or outside the housing connected by using a signal cable, to the remaining two terminals centered on the two terminals connected to each other of the coil wound around each bobbin. 24. The bone conduction earphone microphone according to claim 23, further comprising an electric circuit for taking in signals of opposite phases to a differential amplifier and obtaining a differential output. 26. In the bone conduction earphone microphone,
The bobbin (coil), the electret film, and the piezoelectric element are included in the housing as an electric circuit for adding the electrical output of each mechanism that converts bone conduction vibration into an electrical output. Or provided outside the housing connected using a signal cable.
The bone conduction earphone microphone according to 8, 19, 20, 21 or 25.