KR20130125247A - Bone conduction headphone - Google Patents

Abstract

The present invention relates to a bone conduction headphone and, more specifically, to a bone conduction headphone which enables people, who do not hear sound well because of damage to the eardrum, to listen to sound well by adding the function of a hearing aid as well as the function of a headphone, can reduce a bad influence on users by preventing fine metallic magnetic materials from being absorbed onto a human body with magnets positioned on the opposite side of the human body, can sharply reproduce low-frequencies, and can prevent the leakage of sound to the outside. The bone conduction headphone according to the present invention for achieving the above purpose includes a speaker part on both sides of a mounting part, the speaker part comprising: a lower case which covers a part coming into contact with a human body; an upper case which covers the other side of the lower case; a plate spring which is provided in the inside of the upper and lower cases; a voice coil structure which is provided between the plate spring and the upper case; and a vibrating plate which is provided in the inner side of the lower case.

Description

Bone conduction headphones

The present invention relates to a bone conduction headphone, and more particularly, by adding not only the function of the headphone but also the function of a hearing aid, the eardrum is damaged so that people who cannot hear well can hear the sound well, and the position of the magnet and the body By being located on the opposite side, it is possible to prevent the metallic fine magnetic body from being adsorbed on the part in contact with the body, to reduce the adverse effect on the user, to reproduce the low range clearly, and to prevent the sound from leaking to the outside Relates to bone conduction headphones.

In general, there are two ways in which people can hear sound: air conduction and bone conduction.

Among them, the air conduction method is a method in which sound is transmitted to the inner ear through the eardrum. In general, the vibration of the sound transmitted to the air is transmitted to the eardrum and the vibration is transmitted through three bones located in the eardrum. It is passed on to "wow".

Therefore, a liquid called rinba liquid is filled in the cochlea (snail tube), and the vibration of the liquid is transmitted to the auditory nerve as the electrical signal is changed, so that the human brain recognizes sound.

On the other hand, the bone conduction method is that the sound through the skull (cranial bone) is transmitted to the cochlea, through the auditory nerve to the brain, the vibration recognition in the sound recognition mechanism skips the process of passing through the three bones located in the eardrum and the tympanic membrane. It is.

That is, acoustic vibrations applied to the surface of the skin around the ear are transmitted directly to the cochlea through the skull, so that even if the eardrum or the ear bones are abnormal, if the cochlear and auditory nerves are normal, bone conduction through the skin can be ensured. You will hear the sound.

On the other hand, in the case of air-conducting earphones and headphones, the ears are blocked and you can not hear outside noises, which increases the risk of safety accidents.In developed countries, air-conducting earphones and headphones are blocked and used on the road. The law prohibits music from being heard.

In addition, due to the recent widespread use of digital sound and communication devices, the world's noise deafness has increased by more than 10% of the world's population.In the age of globalization, the increase in senile hearing loss is also a social problem. It is proposed to reduce the number of hours and reduce the use time.

Therefore, since the bone conduction speaker receives the surrounding noise at the same time by using the ears open, the hearing loss prevention is prevented because the bone conduction principle is used using the bone conduction principle without directly affecting the prevention and safety of the eardrum.

In addition, the structure of the general bone conduction speaker is configured by the configuration of the vibrator to the outside of the speaker housing to improve the output of the speaker, the vibration width increases with each increase of the volume increases the tickle to the human body when used, dizzying for some users long-term use There was a problem with headaches.

In addition, bone conduction speakers have a significantly reduced ability to reproduce stereo sound, which is used for audio using stereo due to the limitations of technology that is fatal compared to the advantages of bone conduction due to the general mono sound. It is not spreading.

As an example of a speaker using such bone conduction, there is a technology described in Korean Patent No. 10-0770590 as shown in FIGS. 1 and 2. The technical feature of the speaker 300 is a cylindrical first magnet 301. ), A cylindrical second magnet 302 configured to be spaced apart from the first magnet 301 by a predetermined interval, and a cylindrical pole piece configured to be spaced apart by a predetermined interval to the inside of the first magnet 301. 303, a lower plate 304 for inducing magnetic flux while supporting rear ends of the first magnet 301, the second magnet 302, and the pole piece 303, and an upper end of the first magnet 301. A donut-shaped first upper plate 305, a donut-shaped second upper plate 306 which is formed outside of the first upper plate 305 and formed on an upper end of the second magnet 302, and A disk-shaped third upper plate 3 formed inside the first upper plate 305 and on the upper end of the pole piece 303. 07) and a cylindrical first vibration coil 308 oscillating in the first vibration space 301a formed between the first magnet 301 and the pole piece 303, and the first vibration coil 308 Cylindrical second vibration coil 310 oscillating in the wound cylindrical first bobbin 309 and the second vibration space 302a formed between the first magnet 301 and the second magnet 302. And, the second vibration coil 310 is wound around the cylindrical second bobbin 311 and the first bobbin 309 is fixed to the upper vibration of the first bobbin 309 and the vibration body ( In general, the first vibration material (312) for vibrating the air), and is fixed to the upper end of the second bobbin (311) while vibrating with the vibration of the second bobbin (311) may be a vibration body (bone or air, etc.) The first vibration material 312 is configured between the first bobbin 309 and the second bobbin 311 while being fixed to the upper end of the second vibration material 313 and the first upper plate 305 ) A donut-shaped first frame 314 supporting the donut shape and a donut-shaped material supporting the second vibration material 313 together with the first frame 314 while being fixed to an upper end of the second upper plate 306. Covering the second frame 315, the edges 316 and 317 to elastically support the second vibration material 313 to the first and second frames 314 and 315, and the upper portion of the first frame 314 It is characterized in that it comprises a grill 318 formed with a plurality of open holes (318a) so that the vibration by the first vibration material 312 is output to the front.

By the way, the technology described in Patent No. 10-0770590 is to reproduce the sound through the bone conduction method, there is an advantage that the people who can not hear the sound by the air conduction method due to damage to the eardrum, etc. However, since the magnet provided inside is provided at a position close to the body part, by increasing the size and quantity of the magnet in order to increase the output of the speaker, due to the strong magnetic force adversely affects the human body, Due to the complicated structure of required parts, there is a problem that the sound quality is significantly lowered during the cost increase and reproduction of the sound.

The present invention has been made to solve the above problems, an object of the present invention is to reproduce the sound in a bone conduction method, it is possible to stably hear the sound in noisy or noisy environment, as well as the vibrator Its configuration inside the speaker housing greatly reduces the tickle effect on the human body even when the volume is increased, minimizing the effect on the human body even if worn for a long time, and reproduces the original sound reproduction of stereo sound which is not realized in the bone conduction speaker. It is improved, and the magnet provided inside is located on the opposite side of the body, so as to be less affected by the magnetic force, and to prevent the small metallic magnetic body from being adsorbed to the part in contact with the body to deteriorate the user's health To prevent bone conduction headphones to provide.

In addition, another object of the present invention is to form the shape of the deco formed on the headphone so as to protrude to one side, so that the deco covers the user's ear when worn, not only to prevent the sound of the headphone to leak outside, By collecting the sound and sending it to your ear, you can provide bone conduction headphones that can hear the sound more clearly.

In addition, another object of the present invention, as well as the role of a simple headphone, by separately embedding a microphone to sense the ambient sound, and amplified and reproduced, people who can not hear the sound well in the air conduction method of the surrounding sound It is to provide a bone conduction headphones that act as a hearing aid that can be stably heard.

SUMMARY OF THE INVENTION [0006]

In the bone conduction headphones having a speaker unit on both sides of the mounting portion, the speaker unit is provided in the lower case to cover the portion in contact with the human body, the upper case to cover the other side of the lower case, the inner side of the upper case and the lower case The leaf spring, and the voice coil structure provided between the leaf spring and the upper case, and the diaphragm provided on the inner surface of the lower case.

Here, the voice coil structure is characterized by consisting of a magnet provided on the inner surface of the upper case, a bobbin provided to be spaced apart from the magnet, and a voice coil provided on the outer circumferential surface of the bobbin.

The leaf spring may include a body to which a voice coil structure is coupled, an elastic part formed on both sides of the body, and a fixing part formed in an arc shape on both sides of the elastic part.

On the other hand, a gasket is further provided between the edge of the upper case and the lower case.

At this time, the upper and lower ends of the gasket is formed with a stepped portion, the inner peripheral surface is characterized in that the engaging groove is formed.

Here, the upper case or the lower case is characterized in that the locking projection corresponding to the locking groove is formed.

And, the outer side of the upper case is further provided with a deco, the deco is characterized in that the cover portion protruding to the rear of the upper case is formed.

On the other hand, the center of the mounting portion is characterized in that the first control box is provided with an amplifier for amplifying a signal transmitted to the speaker unit.

Here, the first control box is provided with a power supply for receiving external power, the power supply is characterized in that the charging section for charging the external power.

On the other hand, one side of the mounting portion is connected to the external device, characterized in that the second control box provided with a volume control unit is provided.

The first control box may further include a Bluetooth module for wireless transmission and reception.

At this time, the first control box is characterized in that the external input signal detection module for switching between the hearing aid mode and the external device mode.

On the other hand, a first sound source vibration space portion is formed between the voice coil structure and the magnet.

In addition, a second sound source vibration space is formed between the voice coil structure and the diaphragm.

According to the present invention having the above-described configuration, by reproducing the sound in a bone conduction method, it is possible to stably listen to the sound in a troubled or noisy environment, as well as to configure the vibrator inside the speaker housing to Even when it is increased, it greatly reduces the tickling effect on the human body, and minimizes the effect on the human body even if worn for a long time, and improves the original sound reproduction of stereo sound which is not realized in the bone conduction speaker, and the magnet provided inside It is located on the opposite side in contact with the body, so as to be less affected by the magnetic force, it is effective to prevent the user's health is deteriorated by preventing the small metallic magnetic material from being adsorbed to the part in contact with the body.

In addition, the present invention is formed by protruding the shape of the deco formed on the headphone to one side, so that the deco covers the user's ear when worn, not only prevents the sound of the headphone to leak outside, but also the sound By collecting and sending it to your ear, you can hear the sound more clearly.

In addition, the present invention not only functions as a simple headphone, but also by separately embedding a microphone to sense the surrounding sound, and amplify and reproduce the sound, so that people who cannot hear the sound well by the air conduction method stably hear the surrounding sound. It can act as a hearing aid, and when using a mobile phone, by receiving the user's voice, there is an effect that can be used in a variety of electronic devices.

In addition, the present invention by forming the first sound source vibration space portion and the second sound source vibration space portion on the upper and lower portions of the voice coil structure provided inside the speaker unit, respectively, it is possible to increase the resolution of the low range, and further output It can increase the effect.

1 is an exploded perspective view of a conventional bone conduction headphones.
2 is a cross-sectional view of a conventional bone conduction headphones.
3 is a perspective view of the bone conduction headphones according to the present invention.
Figure 4 is an exploded perspective view of the bone conduction headphones according to the present invention.
5 is a perspective view of the lower case of the bone conduction headphones according to the present invention.
6 is a cross-sectional view of the bone conduction headphones according to the present invention.
7 is a block diagram of a bone conduction headphones according to the present invention.
8 is a block diagram of a bone conduction headphone using a mobile phone and a general acoustic device according to another embodiment of the present invention.
9 is a block diagram of a bone conduction headphone using a Bluetooth function according to another embodiment of the present invention.
10 is a graph showing output for each frequency of a typical bone conduction speaker.
11 is a graph showing the output for each frequency of the bone conduction headphones according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted. It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Figure 3 is a perspective view of the bone conduction headphones according to the invention, Figure 4 is an exploded perspective view of the bone conduction headphones according to the invention, Figure 5 is a perspective view of the lower case of the bone conduction headphones according to the invention, Figure 6 A cross-sectional view of a bone conduction headphone according to the invention, Figure 7 is a block diagram of a bone conduction headphone according to the invention, Figure 8 is a block diagram of a bone conduction headphone using a mobile phone and a general acoustic device according to another embodiment of the present invention 9 is a block diagram of a bone conduction headphone using a Bluetooth function according to another embodiment of the present invention, Figure 10 is a graph showing the output for each frequency of a typical bone conduction speaker, Figure 11 is a bone conduction according to the present invention Figure is a graph showing the output of each headphone frequency.

The present invention relates to a bone conduction headphone, as shown in Figures 3 to 7 the configuration is worn by the user to install the speaker unit 200 and the speaker unit 200 at both ends to convert the electrical signal to sound Mounting unit 100 to enable, the first control box 110 and the second control box 120 is connected to one side of the mounting portion 100 provided inside the center of the mounting portion 100 by a wire. )

Here, the speaker unit 200 includes a lower case 240 covering a portion in contact with the human body, an upper case 210 covering the other side of the lower case 240, the upper case 210, and a lower case 240. ) And a diaphragm 243 provided on the inner surface of the lower coil 240 and the voice coil structure 220 provided between the leaf spring 250 and the leaf spring 250 and the upper case 210 provided inside the. )

In addition, the voice coil structure 220 is provided on the outer surface of the bobbin 222 and the bobbin 222 which are provided to be spaced apart from the magnet 213 and the magnet 213 installed on the inner surface of the upper case 210. The voice coil 224 is installed.

Thus, the voice coil 224 constituting the voice coil structure 220, the magnet 213 and the voice coil structure 220 are attached to the electrical signal of the externally received signal or sound. Sound is reproduced by vibrating by action.

In addition, the vibration plate 243 installed on the diaphragm seating part 242 of the lower case 240 causes the vibration of the user's eardrum to receive an external signal or sound received through the second control box 120. Because it is transmitted through the skull directly to the auditory nerve, not through the eardrum, the eardrum is damaged so that the sound cannot be heard well, or the sound can be clearly heard even in a noisy place.

At this time, by making the diaphragm 243 more tightly coupled to the diaphragm seating portion 242, the vibration of the diaphragm 243 can be transmitted to the lower case 240 intact, so that the sound is more completely transmitted to the user. It can be delivered.

Meanwhile, in the general bone conduction speaker, since the magnet 213 is positioned adjacent to the lower case 240 contacting the user's body in order to vibrate the voice coil structure 220, when the user wears the bone conduction speaker, the magnet The magnetic force generated by the 213 attracts a small metallic magnetic body around the body, and is absorbed by the part contacting the body to affect the user, thereby adversely affecting health.

However, in the present invention, the magnet 213 for vibrating the voice coil structure 220 is attached to the magnet seating portion 212 formed on the inner surface of the upper case 210 so as to be located as far as possible from the user's body. The small metallic magnetic body of the is not adsorbed on the part in contact with the body (that is, the lower case 240) to minimize the adverse effect on the user.

In addition, the leaf spring 250 is formed at a central portion of the body 252 to which the voice coil structure 220 is coupled, and the elastic part 254 and the elastic part 254 formed at both sides of the body 252. It consists of a fixed portion 256 formed in an arc shape on both sides.

Here, the elastic parts 254 formed on both sides of the body 252 are each formed in one thin and narrow bar shape, so that the strength of the leaf spring 250 to reduce the vibration width, the voice coil structure ( The wavelength of the sound reproduced by 220 can be stably reproduced close to the original sound.

Thus, the vibration width of the leaf spring 250 can be reduced, so that the space in which the voice coil structure 220 vibrates can be reduced, and accordingly, the width of the entire speaker unit 200 can be reduced.

In addition, the PCB 260 is installed on the upper side of the leaf spring 250 so as to connect an external signal input to the speaker unit 200 with a cable (not shown) configured inside the mounting unit 100. Improves productivity, improves productivity and maintains stable quality.

In addition, a first sound source vibration space portion 270 is formed between the bobbin 222 and the magnet 213 to primarily determine sound quality and volume of the speaker, and form the first sound source vibration space portion 270. As a result, the present invention can reproduce the low frequency band closer to the original sound and increase the output, as shown in FIG. 11, when compared with the low frequency resolution of the general bone conduction speaker shown in FIG.

The first sound source vibration space 270 adjusts the size according to the size of the magnet 213, the impedance of the voice coil structure 220, the material, size and shape of the leaf spring 250, and the optimum volume and Enable sound quality.

Therefore, the first sound source vibration space 270 formed between the voice coil structure 220 coupled to the lower side of the leaf spring 250 and the magnet 213 improves the output and sound quality of the speaker, The magnetic force is greatly reduced on the outer circumferential surface of the upper case 210 side and the part of the human body to prevent adsorption of the metallic element, thereby preventing adverse effects on the human body.

A second sound source vibration space 280 is formed between the PCB 260 coupled to the upper portion of the voice coil structure 220 and the diaphragm 243 installed on the inner side of the lower case 240. The second sound source vibration space 280 vibrates the leaf spring 250 by the voice coil structure 220, thereby causing the air inside to vibrate, so that the vibration of the air is transmitted to the diaphragm 243. The output of the speaker determined from the first sound source vibration space 270 is further improved.

Accordingly, the second sound source vibration space unit 280 functions as the first sound source vibration space unit 270 to serve as an auxiliary role of the first sound source vibration space unit 270.

In addition, by not using a ferrite core that is conventionally provided inside the bobbin 222, the volume and weight of the bobbin 222 can be further reduced, thereby reducing the volume and weight of the speaker unit 200, allowing the user to It allows you to use bone conduction headphones that are comfortable and have improved fit.

In addition, a second pressing protrusion 244 is formed in the lower case 240, and a seating groove 245 is formed in the second pressing protrusion 244, and the high pressure protrusions are formed at both ends of the leaf spring 250. The government unit 256 is inserted, and the upper case 210 has a first pressing protrusion 214 formed at a position corresponding to the second pressing protrusion 244, and a fixing portion inserted into the seating groove 245. The pressure 256 is fixed.

Thus, even if the leaf spring 250 vibrates by the voice coil structure 220, the position is firmly fixed without moving.

On the other hand, the gasket 230 is further provided between the edge of the upper case 210 and the lower case 240, by installing the gasket 230, vibration of the voice coil structure 220 generated when reproducing sound As a result, noise is prevented from occurring due to friction generated between the upper case 210 and the lower case 240.

In addition, the upper and lower ends of the gasket 230 are formed with a stepped portion 232, and when the gasket 230 is installed between the upper case 210 and the lower case 240, the stepped portion 232 is provided. It is caught by the edge of the upper case 210 and the lower case 240, so that the gasket 230 is firmly fixed.

In addition, a locking groove 234 is formed in the inner circumferential surface of the gasket 230, and a locking protrusion 217 corresponding to the locking groove 234 is formed in the upper case 210 or the lower case 240.

Thus, even when an external force is applied, the gasket 230 is firmly fixed between the upper case 210 or the lower case 240, so that the upper case 210 or the lower case 240 is crushed or friction occurs. Will be prevented.

In addition, a deco 215 is further provided on the outside of the upper case 210. The deco 215 not only makes the aesthetics of the speaker unit 200 more beautiful, but also covers the rear of the upper case 210. The protruding portion 216 is formed to not only prevent the sound generated by the speaker unit 200 from leaking to the outside, but also collect some of the sound leaking from the cover unit 216 to be sent to the user's ear. You will hear the sound more clearly.

On the other hand, the contact portion 130 is formed on the inner surface of the mounting portion 100, the contact portion 130 is formed of silicon, when the mounting portion 100 is worn on the user's head, the feeling of wearing the contact portion Make it good

Therefore, the conventional speaker structure is not only the configuration of the components required, but because of this, even if the different components and components firmly coupled to each other by long-term use, due to the interference between each other, the reliability problem occurs.

Thus, the present invention enables to reproduce the best sound quality with the best output by minimizing the important components required for the speaker.

And, the second control box 120 connected to one side of the mounting portion 100 is connected to the connection jack (not shown) for connecting the external device 20, and controls the signal transmitted from the external device 20 It consists of a volume control unit 121, a microphone 122 and the call selection switch 123 for sensing the external sound and converting it into an electrical signal.

Here, the call selection switch 123 supports the functions of call selection and call termination when using a mobile phone, which is a communication device, and when using an audio device, a stop and playback function, and select a previous song / next song, The external device 20 can be used more easily.

In addition, a first control box 110 is provided inside the central portion of the mounting part 100, wherein the first control box 110 includes an external power supply 111 and a microphone signal filtering module 113. And an external input signal detection module 114 and an amplifier 115.

Here, the microphone signal filtering module 113 filters the external sound detected through the microphone 122 provided in the second control box 120 to process the sound more clearly, and the external input signal detection module When the signal is input from the external device 20 connected through the connection jack (not shown) provided in the second control box 120, the 114 detects the signal and transmits the signal of the external device 20 to the speaker unit 200. Done.

Thus, when the external device 20 is not used, the external input signal detection module 114 of the first control box 110 automatically switches to the hearing aid mode, and the sound input through the microphone 122 is input. Amplified through the microphone signal filtering module 113 and the amplifying unit 115, and transmitted to the speaker unit 200, the ear is used in the hearing aid mode to the user who is hard to hear, the external device 20 is connected When the external input signal detection module 114 detects a signal input from the external device 20, the external input signal detection module 114 automatically terminates the hearing aid mode and outputs an externally input signal to the amplifying unit 115. After amplifying through) and transmitting the signal to the speaker unit 200, the signal of the external device 20 is used in the external device mode output from the speaker unit 200.

Although not shown in the drawing, the second control box 120 may further include a microphone conversion switch (not shown). The microphone conversion switch may include a microphone 122 provided in the second control box 120. In the hearing aid mode, an external sound is received and used as a function for transmitting to the speaker unit 200 through the amplifying unit 115, and the microphone 122 is used when the user uses a mobile phone in the external device mode. By converting the user's voice into an electrical signal through the function to switch the connection of the microphone 122 to be used as a function to transmit a signal to an external device, using a single microphone 122 to perform two functions Make it possible.

On the other hand, conventionally, since the speaker unit 200 reproduces the signal output from the external device 20 as it is, without using the amplifying unit 115 separately, the volume of the sound is small and output of the external device 20 is reduced. Since the external device 20 consumes a lot of battery power, the present invention uses an amplifier 115 to separately amplify the external device 20 even if the output from the external device 20 is low. It will reduce the battery consumption of the (20).

In addition, the power supply unit 111 is used to connect the external power through the charging jack 117, in this case, the power supply unit 111 is provided with a charging unit 112, at the same time using an external power, Therefore, even if the external power is not connected, it can be used for a certain period of time.

Here, the first control box 110 is provided with a display lamp 119, to show whether the current state of the bone conduction headphones in the state of charging, charging while using, or only using the state in various colors At a glance, the user can see the condition of the bone marrow headphones.

On the other hand, as shown in FIG. 8 as another embodiment of the present invention, the external device 20 is not used as a hearing aid, but the external device 20 uses a communication device such as a mobile phone or an acoustic device such as an MP3. Without the external input signal detection module 114, the input signal is amplified directly through the amplifier 115, and then output through the speaker unit 200.

Thus, by not using the hearing aid function, the manufacturing cost can be reduced, so that users who do not need the hearing aid can use it at a lower price.

On the other hand, since the other components are the same as the above-described configuration, a separate description thereof will be omitted.

As another embodiment of the present invention, as shown in FIG. 9, when the external device 20a equipped with the Bluetooth function is used without using the wire, the Bluetooth module is inside the first control box 110. It is provided with (114a), it is possible to wirelessly receive the signal of the external device 20a, the user can use the external device 20a in a more comfortable state.

That is, the Bluetooth module 114a included in the first control box 110 detects a wireless signal transmitted from the Bluetooth external device 20a and transmits and receives a signal through pairing with each other.

The signal received through the Bluetooth module 114a is detected by the external input signal detection module 114, and automatically switches from the hearing aid mode to the external device mode, and amplifies the signal through the amplifying unit 115 so that the speaker unit Output through (200).

Of course, as shown in FIG. 8, the Bluetooth module 114a may be additionally used even in a configuration not using the hearing aid mode.

In addition, since other components are the same as those described above, a separate description thereof will be omitted.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the scope of the present invention is not limited to the disclosed embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The present invention relates to a bone conduction headphone, and more particularly, by adding not only the function of the headphone but also the function of a hearing aid, the eardrum is damaged so that people who cannot hear well can hear the sound well, and the position of the magnet and the body By being located on the opposite side, it is possible to prevent the metallic fine magnetic body from being adsorbed on the part in contact with the body, to reduce the adverse effect on the user, to reproduce the low range clearly, and to prevent the sound from leaking to the outside Relates to bone conduction headphones.

10: external power source 20,20a: external device
100: mounting portion 110: the first control box
111: power supply unit 112: charging unit
113: microphone signal filter module 114: external input signal detection module
115: amplifier 117: charging jack
118: power switch 119: indicator lamp
120: second control box 121: volume control unit
122: microphone 123: call selection switch
130: contact portion 200: speaker portion
210: upper case 212: magnet seat
213: magnet 214: first pressing protrusion
215: Deco 216: cover
220: voice coil structure 222: bobbin
224: voice coil 230: gasket
232: step 234: locking groove
240: lower case 242: diaphragm seating portion
243: diaphragm 244: second pressure protrusion
245: seating groove 250: leaf spring
252: body 254: elastic portion
256: fixed part 260: PCB
270: first sound source vibration space 280: second sound source vibration space

Claims (14)

In the bone conduction headphones provided with speaker parts on both sides of the mounting portion,
The speaker unit and a lower case covering a part in contact with the human body,
An upper case covering the other side of the lower case;
A leaf spring provided inside the upper case and the lower case;
A voice coil structure provided between the leaf spring and the upper case;
Bone conduction headphones, characterized in that made of a diaphragm provided on the inner surface of the lower case.
The method of claim 1,
The voice coil structure and the magnet is installed on the inner surface of the upper case,
A bobbin provided to be spaced apart from the magnet;
Bone conduction headphones, characterized in that consisting of a voice coil is installed on the outer peripheral surface of the bobbin.
The method of claim 1,
The leaf spring has a body to which the voice coil structure is coupled;
Elastic parts formed on both sides of the body,
Bone conduction headphones, characterized in that consisting of a fixed portion formed in an arc shape on both sides of the elastic portion.
The method of claim 1,
Bone conduction headphones, characterized in that the gasket is further provided between the edge of the upper case and the lower case.
5. The method of claim 4,
A stepped portion is formed on the inner upper and lower ends of the gasket,
Bone conduction headphones, characterized in that the engaging groove is formed on the inner circumferential surface.
The method of claim 5,
The upper case or the lower case bone conduction headphones, characterized in that the locking projection corresponding to the locking groove is formed.
The method of claim 1,
Deco is further provided on the outside of the upper case,
The deco is a bone conduction headphone, characterized in that the cover portion protruding to the rear of the upper case.
The method of claim 1,
Bone conduction headphones, characterized in that the center of the mounting portion is provided with a first control box having an amplifier for amplifying a signal transmitted to the speaker unit.
9. The method of claim 8,
The first control box is provided with a power supply unit for receiving external power,
The power supply unit bone conduction headphones, characterized in that provided with a charging unit for charging external power.
The method of claim 1,
One side of the mounting portion is connected to the external device, bone conduction headphones, characterized in that the second control box is provided with a volume control.
9. The method of claim 8,
The first control box bone conduction headphones, characterized in that further provided with a Bluetooth module for wireless transmission and reception.
9. The method of claim 8,
The first control box is a bone conduction headphones, characterized in that the external input signal detection module for switching between the hearing aid mode and the external device mode.
3. The method of claim 2,
Bone conduction headphones, characterized in that the first sound source vibration space is formed between the voice coil structure and the magnet.
3. The method of claim 2,
Bone conduction headphones, characterized in that the second sound source vibration space is formed between the voice coil structure and the diaphragm.

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