KR20060043936A - Speaker, ear-phone and speaker for ear-phone - Google Patents

Abstract

The present invention relates to a speaker, an earphone speaker, and an earphone, and relates to a technology capable of realizing multiple sounds by one speaker.

The speaker according to the present invention includes a first vibration material for vibrating the vibration body in accordance with the first electrical signal input and a second vibration material for vibrating the vibration body in accordance with the second electrical signal input. The speaker for earphones according to the present invention can reproduce multiple sounds having different sound ranges, and according to the first electrical signal input, the diaphragm for vibrating air in the inner ear canal and the second electrical signal input. By including a bone oscillator to vibrate the bones through the inner ear canal, it is possible to hear multiple sounds divided into a first range stimulating the auditory nerve through the eardrum and a second range stimulating the auditory nerve through the bone, the earphone according to the present invention The above speaker for earphone is applied.

Surround speakers, multi-speakers, bone conduction speakers, earphones, headphones

Description

SPEAKER, EAR-PHONE AND SPEAKER FOR EAR-PHONE}             

1 is an exploded perspective view of a conventional speaker according to the prior art.

2 is a sectional view of the speaker of FIG.

3 is an exploded perspective view of a speaker according to an embodiment of the present invention.

4 is a sectional view of the speaker of FIG.

FIG. 5 is a sectional view of a first magnet formed in the speaker of FIG.

FIG. 6 is a sectional view of the magnetic circuit device constructed in the speaker of FIG.

FIG. 7 is a first application example of the speaker of FIG.

FIG. 8 is a second application example for the speaker of FIG.

9 is a third application example for the speaker of FIG.

FIG. 10 is a fourth application example for the speaker of FIG.

FIG. 11 is a fifth application example of the speaker of FIG.

Fig. 12 is a sectional view of a speaker for earphone according to the embodiment of the present invention.

FIG. 13 is an exploded perspective view of the earphone according to the embodiment of the present invention to which the speaker for earphone of FIG. 12 is applied;

* Description of symbols on the main parts of the drawings *

300: speaker 301, 1201: first magnet

302, 1202: Second magnet 303, 1203: Pole piece

304, 1204: lower plate 305, 1205: first upper plate

306, 1206: second upper plate 307, 1207: third upper plate

308, 1208: first vibration coil 309, 1209: first bobbin

310, 1210: 2nd vibration coil 311, 1211: 2nd bobbin

312: first vibration material 313: second vibration material

314, 1214: first frame 315, 1215: second frame

316, 317, 1216, 1217: Edge 318, 1218: Grill

1200: speaker 1212: diaphragm

1213: Oscillator 1300: Earphone

1301: connector 1302: connecting line

1303: casing 1303a: stepping

The present invention relates to a speaker, an earphone speaker, and an earphone, and more particularly, to a speaker, an earphone speaker, and an earphone capable of realizing multiple sounds by one speaker.

A speaker is a device for reproducing an electrical signal as a sound, and a conventional speaker is disclosed in a number of public documents including Korean Utility Model Publication No. 2000-0005319 (name of the invention: speaker structure).

1 is an exploded perspective view of such a conventional speaker 100, and FIG. 2 is a sectional view of the speaker 100 of FIG. Referring to this, the speaker 100 according to the related art includes a trumpet-shaped frame 11 for supporting each device, and a cone-shaped diaphragm having a hollow and vibrating inside the frame 11. (12), an edge surround (13) for elastically supporting the front end of the diaphragm 12 at the front end of the frame 11, and the front end side at the rear side of the diaphragm 12 is the diaphragm ( The bobbin 14 is fixed to the central portion of 12), the outer circumference is fixedly supported by the frame 11 and the inner circumference is a damper (15, damper) fixed to the bobbin 14, and the bobbin 14 The voice coil 16 wound around the donut-shaped magnet 17 disposed outside the voice coil 16 and the donut-shaped upper part fixedly disposed between the frame 11 and the magnet 17. The plate 18, the lower plate 19 covering the lower part of the magnet 17, the magnet 17 and the upper plate 18 The inside of the pole piece 20 and the speaker 100 protruding from the lower plate 19 to the inside of the bobbin 14 are provided with a vibration space 22 in which the bobbin 14 vibrates up and down. It is configured to include a dust cap 21 to block from dust and to maintain the shape of the diaphragm 12.

When the speaker 100 receives a voice electric signal from the amplifier (not shown) to the voice coil 16, the voice coil 16 generates magnetic flux according to the voice electric signal, and the voice coil 16 ) Mutual magnetic interference is generated between the magnetic flux generated by the magnetic field and the magnetic field formed in the vibration space by the magnetic circuit device consisting of the magnet 17, the upper and lower plates 18 and 19, and the pole piece 20. 16 receives a magnetic force corresponding to the voice electric signal, and when the bobbin 14 vibrates by the magnetic force, the diaphragm 12 vibrates along with the bobbin 14 to vibrate the air in front, thereby generating sound. . On the other hand, the edge surround 13 and the damper 15 provides a restoring force during the vibration of the bobbin 14 and the diaphragm 12, in particular, the damper 15 is to bounce up and down bobbin 14 and the diaphragm It provides the restoring force necessary for the reciprocating motion of (12).

 By the way, the existing speaker 100 as described above is different in the playback band that can faithfully implement the sound according to the characteristics of the speaker. Therefore, the sound that is beyond the playback band that can be faithfully implemented can not but feel the lack of hearing, thereby reducing the three-dimensional listening to the effective sound. Therefore, in order to realize multiple sounds (multiple sounds having different sound ranges), a plurality of speakers having different characteristics are constituted by one speaker system, and multiple sounds are realized by inputting electrical signals having different reproduction bands for each of the plurality of speakers. will be. However, since it is difficult to configure a plurality of speakers in a small radio, a mobile communication terminal, headphones, earphones, etc. due to space limitations, such a small device cannot realize three-dimensional multi-sound.

On the other hand, according to the Republic of Korea Utility Model Registration No. 20-0359898 (name of the invention: two-way speaker) discloses a technology in which a speaker for generating a ringing tone and a receiver for reproducing a call voice.

However, even in the case of such a bidirectional speaker, the sound reproduction of the speaker and the receiver is not only instantaneous, but also the direction of vibrating the vibrating body is opposite to each other, so it is difficult to simultaneously output a three-dimensional sound according to the effective multiple sound. It is not suitable as a speaker that can be applied to implement multiple sounds on the back.

On the other hand, the human hearing path can be divided into the path of stimulating the auditory nerve through the eardrum and the path of stimulating the auditory nerve through the bone, and the bone conduction that enables hearing by vibrating bone for the hearing impaired due to the defect of the eardrum. The speaker is disclosed in Korean Patent Laid-Open Publication No. 2002-0086580 (name of the invention: Galdospeaker) and the like. In general, in such a bone loudspeaker, the sound transmitted through the bone is faithful to low-end sound reproduction, but not so effective for high-end reproduction.

Therefore, the Republic of Korea Utility Model Registration No. 20-0253605, a pair of air conduction speakers to hear the sound by vibrating the eardrum through air conduction, and to hear the sound by vibrating the bones through the bone conduction Disclosed is a technology related to a headphone composed of a pair of bone conduction speakers.

Such a headphone technology also has an inconvenience in using because the air conduction speaker and the bone conduction speaker are separately installed, and because the bone conduction speaker and the air conduction speaker are separately configured, they cannot be applied to actual earphones. Technology. In addition, since the individual parts are each composed, the production price of the product is bound to rise.

The present invention aims to provide a speaker capable of reproducing a multi-sound which can not be realized by the conventional speaker as described above, and in particular divided into hearing through the eardrum and hearing through the bone. An object of the present invention is to provide a speaker for earphone that can implement sound, and an earphone to which the speaker for such earphone is applied.

A speaker according to the present invention for achieving the above object, the magnetic circuit device for forming a magnetic field on the inner side of the first vibration space and the second vibration space disposed outside of the first vibration space, respectively; A first vibration unit vibrating an object to be vibrated by generating vibration in accordance with a first electrical signal input on the first vibration space in which a magnetic field is formed by the magnetic circuit device; And a second vibration part provided outside of the first vibration part to vibrate a vibration object by generating vibration in response to the input second electrical signal on the second vibration space where the magnetic field is formed by the magnetic circuit device. Characterized in that it comprises a.

The first vibration unit may include: a first vibration coil generating a vibration force by generating a magnetic field that interferes with a magnetic field formed in the first vibration space according to the first electrical signal; And a first vibration material for vibrating the vibrating body while vibrating together according to the vibration of the first vibration coil. It includes a more specific feature to include.

The second vibration unit may include: a second vibration coil generating a vibration force by generating a magnetic field that interferes with a magnetic field formed in the second vibration space according to the second electrical signal; And a second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second vibration coil. It includes a more specific feature to include.

The magnetic circuit device may include a first cylindrical magnet in which the first vibration space is disposed; And a cylindrical second magnet provided outside the first magnet and disposing the second vibration space between the first magnet and the first magnet. A lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux flow of the first magnet and the second magnet; It includes a more specific feature to include. Here, it is further characterized by further comprising a cylindrical third magnet or a cylindrical pole piece disposed inwardly of the first magnet, the first vibration space disposed between the first magnet and the first magnet. do.

In addition, the speaker according to the present invention for achieving the above object, the first speaker unit provided inside for high-pitched reproduction; And a second speaker unit provided for reproducing bass outside the first speaker unit. Characterized in that it comprises a.

The first speaker unit includes a first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil for generating a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to a first electrical signal input for high sound reproduction; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; The second speaker unit includes: a second magnetic circuit configured to form a magnetic field in a predetermined second vibration space outside the first magnetic circuit; A second vibration coil for generating a magnetic field that interferes with a magnetic field formed in the second vibration space by the second magnetic circuit according to a second electrical signal input for bass reproduction; A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; It includes a more specific feature to include.

In addition, the speaker according to the present invention for achieving the above object, the first speaker unit provided in the inside for the sound range reproduction of a specific band; And a second speaker unit provided outside the first speaker unit for reproducing sound ranges different from the first speaker unit. Characterized in that it comprises a.

The first speaker unit includes a first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil generating a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to a first electrical signal input for sound range reproduction of the specific band; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; The second speaker unit includes: a second magnetic circuit configured to form a magnetic field in a predetermined second vibration space outside of the first magnetic circuit; A second vibration coil for generating a magnetic field that interferes with the magnetic field formed in the second vibration space by the second magnetic circuit in accordance with a second electrical signal input for the other sound range reproduction; A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; It includes a more specific feature to include.

In addition, a speaker according to the present invention for achieving the above object, the first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil vibrating according to a first electrical signal input from the first vibration space formed by the first magnetic circuit; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second magnetic circuit for forming a magnetic field in a predetermined second vibration space outside of the first magnetic circuit; A second vibration coil vibrating according to a second electrical signal input in the predetermined second vibration space formed by the second magnetic circuit; A second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second vibration coil; Characterized in that it comprises a.

In addition, the speaker according to the present invention for achieving the above object, the cylindrical first magnet; A first vibration coil vibrating in response to an input first electrical signal at an inner side of the first magnet; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating outside the first magnet according to an input second electrical signal; A second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second vibration coil; Characterized in that it comprises a.

A cylindrical second magnet disposed to be spaced apart from the first magnet by a predetermined distance to the outside of the first magnet; And a lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux between the first magnet and the second magnet. Further, wherein the second vibration coil, by vibrating in the first vibration space between the first magnet and the second magnet, it is possible to better realize the sound output by the second vibration coil.

A cylindrical pole piece disposed to be spaced apart from the first magnet by a predetermined distance inside the first magnet; And a lower plate supporting rear ends of the first magnet and the pole piece, and guiding the magnetic flux of the first magnet to the pole piece. Further, wherein the first vibration coil, by vibrating between the first magnet and the pole piece, it is possible to better realize the sound output by the first vibration coil.

In addition, a third magnet of the cylindrical shape disposed to be spaced apart from the first magnet by a predetermined interval inside the first magnet; And a lower plate supporting rear ends of the first magnet and the third magnet and inducing magnetic flux between the first magnet and the third magnet. Further, wherein the first vibration coil, by vibrating between the first magnet and the third magnet, it is possible to better realize the sound output by the first vibration coil.

In addition, the speaker according to the present invention for achieving the above object, the cylindrical second magnet; A cylindrical pole piece disposed inside the second magnet to be spaced apart from the inner surface of the second magnet at a predetermined interval; A column-shaped third magnet disposed inside the pole piece to be spaced apart from the pole piece at a predetermined interval; A first vibration coil vibrating according to a first electrical signal input between the pole piece and a third magnet; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input between the second magnet and the pole piece; A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; Characterized in that it comprises a.

In addition, a speaker according to the present invention for achieving the above object, the magnetic circuit device for configuring the first magnetic circuit and the second magnetic circuit; A first vibration coil vibrating according to a first electrical signal input on the first magnetic circuit of the magnetic circuit device; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input on the second magnetic circuit of the magnetic circuit device; And a second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second vibration coil. It includes, wherein the first vibration material and the second vibration material is characterized in that the vibration of the vibration body toward the same direction.

The magnetic circuit device comprises the first magnetic circuit for rotating the magnetic flux inside the first magnet by including a cylindrical first magnet, and the second magnetic for rotating the magnetic flux outside the first magnet. The first vibration coil is configured to vibrate inside the first magnet, and the second vibration coil is vibrated outside of the first magnet.

The magnetic circuit device may support the first magnet while having a cylindrical first magnet, a second magnet disposed outside the first magnet so as to be spaced apart from the first magnet by a predetermined interval, and a rear end of the first magnet and the second magnet. And a lower plate for inducing magnetic flux between the magnet and the second magnet, thereby forming the first magnetic circuit for rotating the magnetic flux inside the first magnet, and rotating the magnetic flux between the first magnet and the second magnet. The second magnetic circuit is configured, wherein the first vibration coil is further characterized in that the second vibration coil vibrates between the first magnet and the second magnet inside the first magnet.

The magnetic circuit device may support the first magnet having a cylindrical shape, a cylindrical pole piece arranged to be spaced apart from the first magnet by a predetermined distance inside the first magnet, and the rear end of the first magnet and the pole piece. The first magnetic circuit for rotating the magnetic flux between the first magnet and the pole piece by including a lower plate for guiding the magnetic flux of one magnet to the pole piece, wherein the magnetic flux to rotate the outside of the first magnet A second magnetic circuit is configured, wherein the first vibration coil is further characterized in that the second vibration coil vibrates outside the first magnet between the first magnet and the pole piece.

In addition, a speaker according to the present invention for achieving the above object, the magnetic circuit device for forming a predetermined magnetic field in each of the first vibration space and the second vibration space outside the first vibration space; A cylindrical first coil which vibrates while generating a magnetic field in accordance with a first electrical signal input in the first vibration space in which a magnetic field is formed by the magnetic circuit device; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first coil; A cylindrical second coil provided outside the first coil and vibrating while generating a magnetic field in accordance with a second electrical signal input on the second vibration space in which a magnetic field is formed by the magnetic circuit device; A second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second coil; Characterized in that it comprises a.

The second vibration material is characterized in that the donut shape more specifically.

In addition, the speaker for earphone according to the present invention for achieving the above object, the magnetic circuit device for forming a magnetic field on the first vibration space of the inner side and the second vibration space disposed outside of the first vibration space, respectively ; A first vibration unit vibrating air in the inner ear canal space by generating vibration in accordance with a first electrical signal input on the first vibration space in which a magnetic field is formed by the magnetic circuit device; And a second vibration provided outside the first vibration part and oscillating bone through the inner ear canal by generating vibration in response to a second electrical signal input on the second vibration space in which a magnetic field is formed by the magnetic circuit device. Eastern; Characterized in that it comprises a.

The first vibration unit may include: a first vibration coil generating a vibration force by generating a magnetic field that interferes with a magnetic field formed in the first vibration space according to the first electrical signal; And a diaphragm vibrating air on the inner ear canal space while vibrating together according to the vibration of the first vibration coil. It includes a more specific feature to include.

The second vibration unit may include: a second vibration coil generating a vibration force by generating a magnetic field that interferes with a magnetic field formed in the second vibration space according to the second electrical signal; And a bone oscillator for vibrating bone by vibrating the inner ear canal while vibrating together according to the vibration of the second vibration coil. It includes a more specific feature to include.

The magnetic circuit device may include a first cylindrical magnet in which the first vibration space is disposed; And a cylindrical second magnet provided outside the first magnet and disposing the second vibration space between the first magnet and the first magnet. A lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux flow of the first magnet and the second magnet; It includes a more specific feature to include.

It is further arranged to the inside of the first magnet, and further comprises a cylindrical third magnet or a pole-shaped pole piece for arranging the first vibration space between the first magnet and as a further specific feature do.

In addition, the speaker for earphone according to the present invention for achieving the above object, the first speaker unit for vibrating the air in the inner ear ear according to the first electrical signal input for high-pitched reproduction; And a second speaker unit configured to vibrate a bone through an inner ear surface in response to a second electrical signal input for reproducing bass outside the first speaker unit. Characterized in that it comprises a.

The first speaker unit includes a first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil configured to generate a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to the first electrical signal input; Vibration plate for vibrating the air in the outer ear space while vibrating together in accordance with the vibration of the first vibration coil; The second speaker unit includes a second magnetic circuit configured to form a magnetic field in a predetermined second vibration space outside the first magnetic circuit; A second vibration coil configured to generate a magnetic field that interferes with a magnetic field formed in the second vibration space by the second magnetic circuit according to an input second electrical signal; A bone vibrator for vibrating bone through an inner ear surface while vibrating together according to the vibration of the second vibration coil; It includes a more specific feature to include.

In addition, the speaker for earphone according to the present invention for achieving the above object, the first speaker unit for vibrating the air in the inner ear canal space according to the first electrical signal input for sound range reproduction of a specific band; And a second speaker unit configured to vibrate a bone through an inner surface of the ear canal in response to a second electrical signal input for sound range reproduction different from the first speaker unit on a band outside the first speaker unit. Characterized in that it comprises a.

The first speaker unit includes a first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil generating a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to a first electrical signal input for sound range reproduction of the specific band; And a vibrating plate vibrating air on the inner ear space while vibrating together according to the vibration of the first vibration coil. The second speaker unit includes a second magnetic circuit configured to form a magnetic field in a predetermined second vibration space outside the first magnetic circuit; A second vibration coil for generating a magnetic field that interferes with the magnetic field formed in the second vibration space by the second magnetic circuit in accordance with a second electrical signal input for the other sound range reproduction; Bone oscillator for vibrating bone through the inner ear surface while vibrating together according to the vibration of the second vibration coil; It includes a more specific feature to include.

In addition, the speaker for earphone according to the present invention for achieving the above object, the first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil vibrating according to a first electrical signal input from the first vibration space formed by the first magnetic circuit; Vibration plate for vibrating the air in the inner ear canal space while vibrating together in accordance with the vibration of the first vibration coil; A second magnetic circuit for forming a magnetic field in a predetermined second vibration space outside of the first magnetic circuit; A second vibration coil vibrating according to a second electrical signal input in the predetermined second vibration space formed by the second magnetic circuit; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil; Characterized in that it comprises a.

In addition, the speaker for earphones according to the present invention for achieving the above object, the first magnet of the cylindrical shape; A first vibration coil vibrating in response to an input first electrical signal at an inner side of the first magnet; Vibration plate for vibrating the air in the inner ear canal space while vibrating together in accordance with the vibration of the first vibration coil; A second vibration coil vibrating outside the first magnet according to an input second electrical signal; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil; Characterized in that it comprises a.

A cylindrical second magnet disposed to be spaced apart from the first magnet by a predetermined distance to the outside of the first magnet; And a lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux between the first magnet and the second magnet. Further, wherein the second vibration coil, by vibrating in the first vibration space between the first magnet and the second magnet, it is more preferable to implement a better output of the sound by the second vibration coil. Do.

A cylindrical pole piece disposed to be spaced apart from the first magnet by a predetermined distance inside the first magnet; And a lower plate supporting rear ends of the first magnet and the pole piece, and guiding the magnetic flux of the first magnet to the pole piece. Further, wherein the first vibration coil, it is more preferable to implement a better output of the sound by the first vibration coil by vibrating between the first magnet and the pole piece.

In addition, a third magnet of the cylindrical shape disposed to be spaced apart from the first magnet by a predetermined interval inside the first magnet; And a lower plate supporting rear ends of the first magnet and the third magnet and inducing magnetic flux between the first magnet and the third magnet. Further, wherein the first vibration coil, by vibrating between the first magnet and the third magnet, it is more preferable to implement a better output of the sound by the first vibration coil.

In addition, the speaker for earphones according to the present invention for achieving the above object, the cylindrical second magnet; A cylindrical pole piece disposed inside the second magnet to be spaced apart from the inner surface of the second magnet at a predetermined interval; A column-shaped third magnet disposed inside the pole piece to be spaced apart from the pole piece at a predetermined interval; A first vibration coil vibrating according to a first electrical signal input between the pole piece and a third magnet; A vibrating plate vibrating air in the inner ear canal space while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input between the second magnet and the pole piece; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil; Characterized in that it comprises a.

In addition, the speaker for earphone according to the present invention for achieving the above object, the magnetic circuit device for configuring the first magnetic circuit and the second magnetic circuit; A first vibration coil vibrating according to a first electrical signal input on the first magnetic circuit of the magnetic circuit device; A diaphragm for vibrating air in the inner ear canal space while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input on the second magnetic circuit of the magnetic circuit device; And a bone vibrator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil. Characterized in that it comprises a.

The magnetic circuit device comprises the first magnetic circuit for rotating the magnetic flux inside the first magnet by including a cylindrical first magnet, and the second magnetic for rotating the magnetic flux outside the first magnet. The first vibration coil is configured to vibrate inside the first magnet, and the second vibration coil is vibrated outside of the first magnet.

The magnetic circuit device may support the first magnet while having a cylindrical first magnet, a second magnet disposed outside the first magnet so as to be spaced apart from the first magnet by a predetermined interval, and a rear end of the first magnet and the second magnet. And a lower plate for inducing magnetic flux between the magnet and the second magnet, thereby forming the first magnetic circuit for rotating the magnetic flux inside the first magnet, and rotating the magnetic flux between the first magnet and the second magnet. The second magnetic circuit is configured, wherein the first vibration coil is further characterized in that the second vibration coil vibrates between the first magnet and the second magnet inside the first magnet.

The magnetic circuit device may support the first magnet having a cylindrical shape, a cylindrical pole piece arranged to be spaced apart from the first magnet by a predetermined distance inside the first magnet, and the rear end of the first magnet and the pole piece. The first magnetic circuit for rotating the magnetic flux between the first magnet and the pole piece by including a lower plate for guiding the magnetic flux of one magnet to the pole piece, wherein the magnetic flux to rotate the outside of the first magnet A second magnetic circuit is configured, wherein the first vibration coil is further characterized in that the second vibration coil vibrates outside the first magnet between the first magnet and the pole piece.

In addition, the speaker for earphone according to the present invention for achieving the above object, the magnetic circuit device for forming a predetermined magnetic field in each of the first vibration space and the second vibration space outside the first vibration space; A cylindrical first coil which vibrates while generating a magnetic field in accordance with a first electrical signal input in the first vibration space in which a magnetic field is formed by the magnetic circuit device; A diaphragm vibrating air in the inner ear canal space while vibrating together according to the vibration of the first coil; A cylindrical second coil provided outside the first coil and vibrating while generating a magnetic field in accordance with a second electrical signal input on the second vibration space in which a magnetic field is formed by the magnetic circuit device; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second coil; Characterized in that it comprises a.

The bone oscillator is characterized in that the donut shape more specifically.

In addition, the earphone according to the present invention for achieving the above object, the connector is connected to the AV device; Two types of vibrations corresponding to two different sound ranges according to the first electrical signal and the second electrical signal received from the AV device through the connector are respectively generated, and the vibration according to the first electrical signal is generated in the inner space of the ear canal. A speaker configured to vibrate the air on the vibration and vibrate according to the second electrical signal to vibrate a bone through an inner surface of the ear canal; A connection line for transmitting the first electrical signal and the second electrical signal input from the AV device through the connector to the speaker; A casing in which the speaker is accommodated and the front end of the casing is opened so that vibration generated by the speaker can be output forward; Characterized in that it comprises a.

The casing is characterized in that the straddle is formed over the ear wheels to secure the casing.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings, for the sake of brevity of description, redundant descriptions will be omitted or compressed.

<Example for Speaker>

3 is an exploded perspective view of a speaker 300 according to an embodiment of the present invention, Figure 4 is a cross-sectional view of the speaker 300 of FIG. As shown in Figs. 3 and 4, the speaker 300 according to the present embodiment has a cylindrical first magnet 301 and a cylindrical shape configured to be spaced apart from the first magnet 301 by a predetermined interval. The second magnet 302, the cylindrical pole piece 303 is configured to be spaced apart by a predetermined interval inside the first magnet 301, the first magnet 301, the second magnet 302 and the pole A lower plate 304 for inducing magnetic flux while supporting the rear end of the piece 303, a donut-shaped first upper plate 305 formed at an upper end of the first magnet 301, and the first upper plate ( A donut-shaped second upper plate 306 which is outside the 305 and formed at the upper end of the second magnet 302, and is formed at the upper end of the pole piece 303 while being inside of the first upper plate 305. A cylindrical plate vibrating in the third upper plate 307 having a disc shape and a first vibration space 301a formed between the first magnet 301 and the pole piece 303. A first vibration coil 308 on the upper surface, a first bobbin 309 on which the first vibration coil 308 is wound, and a first magnet 301 and the second magnet 302 formed between the first vibration coil 308 and the first magnet 301. Cylindrical second vibration coil 310 oscillating in the second vibration space 302a, a cylindrical second bobbin 311 on which the second vibration coil 310 is wound, and an upper end of the first bobbin 309 It is fixed to the first vibration material (312) for vibrating the vibrating body (generally air) while vibrating with the vibration of the first bobbin (309), and is fixed to the upper end of the second bobbin (311) second bobbin ( The second bobbin material 313 which vibrates the vibrating body (which may be bone or air, etc.) while vibrating together with the vibration of 311 and the first bobbin 309 while being fixed to the upper end of the first upper plate 305. And a donut-shaped first frame 314 configured between the second bobbin 311 and the first vibration material 312, and fixed to an upper end of the second upper plate 306. The donut-shaped second frame 315 supporting the second vibration material 313 together with the first frame 314 and the second vibration material 313 may be provided in the first and second frames 314,. Edges 316 and 317 that elastically support the 315 and a plurality of openings 318a covering the upper portion of the first frame 314 so that vibrations by the first vibration material 312 can be output to the front. ) Is formed including a grill 318 and the like.

Each of the above-described configuration in more detail as follows.

Since the first magnet 301 is cylindrical, as shown in FIG. 5, the magnetic flux is rotated inward and outward. Therefore, the vibration of the first vibration coil 308 and the second vibration coil 310 can be made with only one first magnet 301.

The second magnet 302 is spaced apart from the first magnet 301 with a second vibration space 302a through which the second vibration coil 310 and the second bobbin 311 can vibrate. It is arranged to be. The second magnet 302 is provided to improve the output by increasing the magnetic flux that can interfere with the second vibration coil 310.

The pole piece 303 is provided inside the first magnet 301 and induces a magnetic flux rotating inwardly of the first magnet 301 so that magnetic flux that interferes with the first vibration coil 308 is maximum. To be.

The lower plate 304 is a magnetic material that induces a magnetic flux flow between the first magnet 301 and the second magnet 302 and at the same time the flow of magnetic flux from the first magnet 301 to the pole piece 303. By inducing to minimize the magnetic flux that can leak in the downward direction of the speaker (300).

The first upper plate 305 has a width that is wider by a predetermined width than that of the first magnet 301, and thus the first vibration coil 308 and the first upper plate 305 are formed on the upper portion of the first magnet 301. The magnetic flux formed by the first magnet 301 is densely concentrated to the side of the second vibration coil 310, that is, the first vibration space 301a and the second vibration space 302a.

The second upper plate 306, along with the first upper plate 305 from the upper side of the second magnet 302 to the second vibration coil 310 side, that is, the second vibration space 302a side Concentrate the magnetic flux as much as possible.

The third upper plate 307, together with the first upper plate 305 on the pole piece 303, the magnetic flux toward the first vibration coil 308, that is, the first vibration space (301a) Dense as much as possible.

Of course, the first, second and third upper plates 305, 306 and 307 are also provided as magnetic materials.

The first vibration coil 308 generates a magnetic field in accordance with a first electrical signal from an AV (not shown) device, that is, between the first magnet 301 and the pole piece 303, that is, the first vibration coil 308. Vibration occurs while causing mutual magnetic interference with the magnetic field formed in the first vibration space (301a).

The first bobbin 309 is wound around the first vibration coil 308, thus vibrating together with the first vibration coil 308. In general, a large size speaker is configured to have a vibration coil wound on the bobbin to vibrate the vibration material by the bobbin, but in a small speaker, only the vibration coil is configured and the vibration material is vibrated by the vibration coil. Accordingly, the first bobbin 308 and the second bobbin 311 to be described below are components that may be configured or omitted in the speaker embodied in the specific embodiment of the present invention.

The second vibration coil 310 generates a magnetic field in accordance with a second electrical signal from the AV device, so that the second vibration coil 310 is disposed between the first magnet 301 and the second magnet 302, that is, the second vibration space 302a. Vibration occurs while causing mutual magnetic interference with the magnetic field to be formed.

The second bobbin 311 is wound around the second vibration coil 310, and thus vibrates together with the second vibration coil 310.

The space where the first vibration coil 308 vibrates, that is, between the first magnet (/ first upper plate) and the pole piece (/ third upper plate) is defined as a first vibration space, and the second vibration coil This oscillating space, that is, between the first magnet (/ first upper plate) and the second magnet (/ second upper plate) was defined as the second vibration space.

The first vibration material 312 is fixed to the upper end of the first bobbin 309 to vibrate with the vibration of the first bobbin 309 while vibrating the vibrating body.

The second vibration material 313 is fixed to the upper end of the second bobbin 311 to vibrate the vibrating body while vibrating with the vibration of the second bobbin 311.

Here, the first vibration material 312 and the second vibration material 312 vibrate the vibrating body in the same direction.

The first frame 314 is made of a nonmagnetic material, and directly supports the first vibration material 312, and is fixed to the first vibration material 312, the first bobbin 309 and the first vibration Support the coil 308.

The second frame 315 supports the second vibration material 313 together with the first frame 314 and is fixed to the second vibration material 313 and second vibration 311. Support the coil 310.

The edges 316 and 317 allow the second vibration material 313 to be elastically supported by the first frame 314 and the second frame 315.

The grill 318 allows the vibration sound of the first vibration material 312 to spread to the outside through the opening hole 318a while protecting the first vibration material 312 from the outside.

In the speaker 300 configured as described above, a magnetic field is applied to the first vibration space 301a in which the first vibration coil 308 vibrates and the second vibration space 302a in which the second vibration coil 310 vibrates. As shown in FIG. 5, the magnetic circuit device to be formed includes the first and second magnets 301 and 302, the pole piece 303, the lower plate 304, and the first, second and third upper plates. (305, 306, 307). In addition, the first magnetic circuit A for forming a magnetic field in the first vibration space 301a includes the first magnet 301, the lower plate 304, the pole piece 303, and the first upper plate 305. ) And a third upper plate 307, and the second magnetic circuit B for forming a magnetic field in the second vibration space 302a includes the first magnet 301 and the second magnet 302. ), The lower plate 304, and the first and second upper plates 305 and 306.

On the other hand, in the speaker 300 configured as described above, the first vibration to vibrate the vibration object while vibrating in accordance with the first electrical signal input while interfering with the magnetic field formed in the first vibration space (301a) by the magnetic circuit device The part comprises a first vibration coil 308, a first bobbin 309 and a first vibration material 312, while interfering with a magnetic field formed in the second vibration space 302a by the magnetic circuit device. The second vibration unit vibrating the vibrating body while vibrating according to the input second electrical signal includes a second vibration coil 310, a second bobbin 311, a second vibration material 313, and the like.

Therefore, the speaker 300 according to the present exemplary embodiment may be divided into a first speaker unit disposed inside and a second speaker unit disposed outside the first speaker unit, wherein the first speaker unit may include a first magnetic circuit and The first vibrator may be divided into a second magnetic circuit and a second vibrator.

Referring to the operation of the speaker as described for example as follows.

First, when a first electrical signal capable of reproducing a high-frequency range is input to the first vibration coil 308, the first vibration coil 308 forms a magnetic field corresponding thereto to thereby form the first vibration space by the magnetic circuit device. It causes magnetic field interference with the magnetic field formed at 308a. Accordingly, the first vibration coil 308 vibrates in the vertical direction by mutual magnetic interference, and the first vibration coil 308 and the first bobbin 309 vibrate by the vibration force, thereby ultimately. By vibrating the first vibration material 312, the first electrical signal is to be converted to the sound of the high range.

In addition, when a second electrical signal capable of reproducing a low frequency range is input to the second vibration coil 310, the second vibration coil 310 forms a magnetic field corresponding to the second vibration coil 310, thereby allowing the second circuit by the magnetic circuit device. Magnetic field and magnetic field interference formed in the vibration space (302a) causes. Therefore, the second vibration coil 310 is vibrated in the vertical direction by mutual magnetic interference, and the second vibration coil 310 and the second bobbin 311 are ultimately vibrated by the vibration force. By vibrating the second vibrating material 313, the second electrical signal is converted into a low range sound.

  Of course, the above-described operation has been described with an example of reproducing and outputting high sound in the first speaker unit and low sound in the second speaker unit, but the present invention is not limited thereto. The speaker unit may be implemented to realize high pitched sound. That is, by implementing the first speaker unit and the second speaker unit to reproduce sounds different from each other, it is to faithfully reproduce the technical idea of the present invention when it is configured to reproduce multiple sounds by one speaker. Therefore, different sound ranges are reproduced by the first and second speaker units having different characteristics, thereby realizing a three-dimensional sound.

On the other hand, the same embodiment described above may have a variety of applications, such applications are described below.

<First Application Example for Speakers>

FIG. 7 is a cross-sectional view of the speaker 700 that simplifies the technical spirit of the present invention and shows an example in which only one first magnet 701 is provided in the speaker 700.

6, a cylindrical first magnet 701, a first vibration coil 702 and a second vibration coil 703 vibrating inside and outside the first magnet 701, respectively, A cylindrical first bobbin 704 and a second bobbin 705 wound around the first vibration coil 702 and the second vibration coil 703, respectively, and the first bobbin 704 and the second bobbin 705 First and second vibration materials 706 and 707 which are respectively fixed to an upper end and vibrate the vibrating body while vibrating together with vibrations of the first bobbin 704 and the second bobbin 705, and the first magnet 701. The first frame 708 and the second bobbin 705 while being fixed to the upper end of the disc-shaped lower frame 708 and the upper end of the first magnet 701, the first vibration A donut-shaped first frame 709 supporting the material 706 and the second vibration material 707 together with the first frame 709 while being fixed to an outer side end of the lower frame 708. Cylindrical 2nd Im is configured, including 710 and the second vibration material 707, the first and second frame edge (711, 712) for supporting a resiliently (709, 710), and the like. The lower frame 708 and the first and second frames 709 and 710 are nonmagnetic materials.

The speaker 700 according to the first application example is a speaker 700 embodying the most basic principles of the present invention, and the speaker 300 according to the above-described embodiment is the speaker 700 according to the first application example. ), Several additional configurations are added to make the output better.

<Second application example for speakers>

8 is a sectional view of a speaker according to the present application.

Referring to FIG. 8, the speaker 800 according to the present application includes a cylindrical first magnet 801 and a cylindrical first pole piece configured to be spaced apart from the first magnet 801 by a predetermined interval. 802, a cylindrical second pole piece 803 configured to be spaced a predetermined interval inwardly of the first magnet 801, the first magnet 801, the first pole piece 802, and the second A lower plate 804 for inducing magnetic flux while supporting a rear end of the pole piece 803, a donut-shaped first upper plate 805 formed at an upper end of the first magnet 801, and the first upper part A donut-shaped second upper plate 806 that is outside the plate 805 and is formed on an upper end of the first pole piece 802, and the second pole piece 803 that is inside the first upper plate 805. A disk-shaped third upper plate 807 formed at an upper end of the upper surface of the disk), a cylindrical first vibration coil 808 vibrating between the first magnet 801 and the second pole piece 803, A cylindrical first bobbin 809 wound around the first vibration coil 808, a cylindrical second vibration coil 810 vibrating between the first magnet 801, and the first pole piece 802; The second vibration coil 810 is wound around the cylindrical second bobbin 811 and the first bobbin 809 and is fixed to the top of the first bobbin 808 while vibrating with the vibration of the vibrating member. The first vibration material 812 to be fixed to the upper end of the second bobbin 811, the second vibration material 813 to vibrate the vibration body while vibrating with the vibration of the second bobbin 811, and The first frame 814 is fixed to the upper end of the upper plate 805 and is configured between the first bobbin 809 and the second bobbin 811 to support the first vibration material 812 and A donut-shaped second frame 815 which is fixed to an upper end of the second upper plate 806 and supports the second vibration material 813 together with the first frame 814, and the second vibration The material 813 is configured to include the first and second frames (814, 815) to allow the support of the edge (816, 817) resilient.

<Third application example for speakers>

9 is a sectional view of a speaker 900 according to the present application.

9, the speaker 900 according to the present application includes a cylindrical pole piece 901, a cylindrical second magnet 902 configured to be spaced apart from the pole piece 901 by a predetermined interval. The rear end of the cylindrical third magnet 903 and the pole piece 901, the second magnet 902 and the third magnet 903 are spaced apart by a predetermined interval inwardly of the pole piece 901. A lower plate 904 which guides the magnetic flux while supporting the first plate; a donut-shaped first upper plate 905 formed at an upper end of the pole piece 901; and a second outer side of the first upper plate 905; A donut-shaped second upper plate 906 formed at the upper end of the magnet 902 and a disc-shaped third upper part formed at the upper end of the third magnet 903 while being inside the first upper plate 905. A plate 907, a cylindrical first vibration coil 908 oscillating between the pole piece 901 and the third magnet 903, and the first vibration coil 908. The wound cylindrical first bobbin 909, the cylindrical second vibration coil 910 vibrating between the pole piece 901 and the second magnet 902, and the second vibration coil 910 are wound. A first cylindrical material 912 which is fixed to an upper end of the cylindrical second bobbin 911 and the first bobbin 909 and vibrates with the vibration of the first bobbin 909 while vibrating the driven body; The second vibration material 913 is fixed to the upper end of the second bobbin 911 and vibrates with the vibration of the second bobbin 911 and is fixed to the upper end of the first upper plate 905. A donut-shaped first frame 914 configured between the first bobbin 909 and the second bobbin 911 to support the first vibration material 912, and an upper end of the second upper plate 906. The donut-shaped second frame 915 supporting the second vibration material 913 together with the first frame 914 and the second vibration material 913 are fixed to the first frame 914. 2 is configured to include a frame (914, 915) to allow the support of the edge (916, 9170), such as elasticity.

<Fourth application example for speakers>

10 is a cross-sectional view of a speaker 1000 according to the present application.

Referring to FIG. 10, the speaker 1000 according to the present application includes a cylindrical first magnet 1001 and a cylindrical second magnet 1002 spaced apart from the first magnet 1001 by a predetermined interval. ), A cylindrical third magnet 1003 configured to be spaced apart by a predetermined interval inside the first magnet 1001, the first magnet 1001, the second magnet 1002, and the third magnet 1003. Of the lower plate 1004 for inducing magnetic flux while supporting the rear end of the &lt; RTI ID = 0.0 &gt;), &lt; / RTI &gt; a donut-shaped first upper plate 1005 formed on the upper end of the first magnet 1001, and the first upper plate 1005. A donut-shaped second upper plate 1006 configured to be on the upper end of the second magnet 1002 and an outer side of the first upper plate 1005 and an inner plate formed on the upper end of the third magnet 1003. A third upper plate 1007 having a shape, a cylindrical first vibration coil 1008 oscillating between the first magnet 1001 and the third magnet 1003, A cylindrical first bobbin 1009 wound around the first vibration coil 1008, a cylindrical second vibration coil 1010 vibrating between the first magnet 1001 and the second magnet 1002, The second vibration coil 1010 is wound around the cylindrical second bobbin 1011 and the upper end of the first bobbin 1009 and vibrates together with the vibration of the first bobbin 1009 to vibrate the vibrating body. A second vibration material 1013 fixed to an upper end of the first vibration material 1012 and the second bobbin 1011 to vibrate the vibration body while vibrating together with the vibration of the second bobbin 1011, and the first vibration material; A donut-shaped first frame 1014 configured between the first bobbin 1009 and the second bobbin 1011 and fixed to an upper end of the upper plate 1005 to support the first vibration material 1012; A donut-shaped second frame 1015 supporting the second vibration material 1012 together with the first frame 1005 while being fixed to an upper end of the second upper plate 1006, And edges 1016 and 1017 for elastically supporting the second vibration material 1013 to the first and second frames 1014 and 1015.

<Fifth Application Example to Speakers>

10 is a cross-sectional view of a speaker 1100 according to the present application.

Referring to FIG. 10, the speaker 1100 according to the present application includes a cylindrical first magnet 1101 and a cylindrical second magnet 1102 configured to be spaced apart from the first magnet 1101 by a predetermined interval. ), A cylindrical fourth magnet 1103 configured to be spaced apart from the second magnet 1102 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 1101. 1104, a lower plate 1105 for inducing magnetic flux while supporting rear ends of the first magnet 1101, the second magnet 1102, the fourth magnet 1103 and the pole piece 1104, and the first magnet 1101. A donut-shaped first upper plate 1106 formed at the upper end of the first magnet 1101, and a donut-shaped second upper end formed at the upper end of the second magnet 1102 while being outside the first upper plate 1106. An upper plate 1107 and a disc-shaped third upper baffle formed inside the first upper plate 1106 and on the upper end of the pole piece 1104. Yite 1108, the fourth upper plate (1109) formed on the upper end of the fourth magnet 1103 and the outside of the second upper plate (1107), the first magnet 1101 and the pole piece (1104) Cylindrical first vibration coil 1110, vibrating between the first, the first vibration coil 1110, the cylindrical first bobbin 1111, the first magnet 1101 and the second magnet 1102 Cylindrical second vibrating coil 1112 oscillating between the first and second cylindrical coils 1113 to which the second vibrating coil 1112 is wound, the second magnet 1102 and the fourth magnet 1103. The third vibration coil 1114 of the cylindrical form vibrating between the), the third bobbin 1115 of the cylindrical shape wound around the third vibration coil 1114, and is fixed to the upper end of the first bobbin 1111 The first vibration material 1116 vibrates the vibrating body while vibrating together with the vibration of the first bobbin 1111, and is fixed to the upper end of the second bobbin 1113 to vibrate with the vibration of the second bobbin 1113. vibration A second vibration material 1117 which vibrates a sieve, and a third vibration material 1118 that is fixed to an upper end of the third bobbin 1115 and vibrates with the vibration of the third bobbin 1115 and vibrates the subject body. A donut-shaped first frame configured between the first bobbin 1111 and the second bobbin 1113 and fixed to the upper end of the first upper plate 1106 to support the first vibration material 1116 ( 1119, a donut-shaped second frame 1120 that is fixed to an upper end of the second upper plate 1107 and supports the second vibration material 1117 together with the first frame 1119, and the first frame 1107. The donut-shaped third frame 1121 which is fixed to the upper end of the four upper plate 1109 and supports the third vibration material 1118 together with the second frame 1120, and the second vibration material 1117 Is elastically supported on the first and second frames 1119 and 1120 and the third vibration material 1118 to the second frame 1120 and the fourth frame 1121. It is configured to include an edge (1122, 1123, 1124, 1125).

In the speakers 700, 800, 900, 1000, and 1100 according to the above application examples, since the first vibration coil and the second vibration coil may implement sounds of different bands, the speaker may be multiplied by one speaker. Technical idea according to the present invention that can implement the sound can be embodied well. That is, more specifically, the magnetic circuit device configured in one speaker forms a magnetic field in the plurality of vibration spaces, and the plurality of vibration materials are formed by the plurality of vibration coils capable of vibrating in the plurality of vibration spaces. By vibrating, if the technology capable of realizing multiple sounds, in addition to the above-described embodiments and applications can be deformed any number of applications, the present invention has a technical spirit including all such embodiments and applications. .

On the other hand, in general, the damper suppresses over-movement of the bobbin while providing restoring force to the bobbin, and it is common to omit the configuration of the damper in a small speaker. That is, the damper is not a necessary configuration in the speaker, it is only an optional component, and this fact is not only known to those skilled in the speaker technology, but also obviously how to configure the damper. Therefore, although the damper is omitted in the speaker according to the embodiment and application of the present invention described with reference to the drawings, in some cases, the damper for providing a restoring force to the first bobbin and the second bobbin may be further configured.

Since the speaker according to the embodiments and applications as described above can implement multiple sounds by one speaker, it is applicable to miniaturized devices. Next, an earphone is taken as an example of a device to which the speaker having the above technical concept may be preferably applied, and an earphone speaker that can be applied to the earphone will be described.

<Example of a speaker for earphone>

12 is a cross-sectional view of a speaker 1200 for earphones according to an embodiment of the present invention.

Referring to FIG. 11, the speaker 1200 for earphones according to the present invention includes a cylindrical first magnet 1201 and a cylindrical second magnet configured to be spaced apart by a predetermined distance to the outside of the first magnet 1201 ( 1202, a cylindrical pole piece 1203 configured to be spaced apart by a predetermined interval inside the first magnet 1201, the first magnet 1201, the second magnet 1202, and the pole piece 1203. A lower plate 1204 for inducing magnetic flux while supporting a rear end of the first plate; a donut-shaped first upper plate 1205 formed at an upper end of the first magnet 1201; and an outer side of the first upper plate 1205. And a donut-shaped second upper plate 1206 formed at the upper end of the second magnet 1202 and a disc shape formed at the upper end of the pole piece 1203 while being inside the first upper plate 1205. Cylindrical first vibration coil 12 vibrating between the third upper plate 1207 and the first magnet 1201 and the pole piece 1203. 08, a cylindrical first bobbin 1209 wound around the first vibration coil 1208, and a second cylindrical vibration coil vibrating between the first magnet 1201 and the second magnet 1202 ( 1210, a cylindrical second bobbin 1211 on which the second vibration coil 1210 is wound, and fixed to an upper end of the first bobbin 1209 to vibrate with vibration of the first bobbin 1209. Oscillator 1212 for vibrating air in the inner ear canal space, and bone oscillator 1213 that is fixed to the upper end of the second bobbin 1211 and vibrates with the vibration of the second bobbin 1211 while vibrating bone through the inner ear canal surface. And a donut-shaped first frame 1214 configured between the first bobbin 1209 and the second bobbin 1211 while being fixed to an upper end of the first upper plate 1205 to support the diaphragm 1212. And a donut type that supports the bone oscillator 1213 together with the first frame 1214 while being fixed to an upper end of the second upper plate 1206. The second frame 1215, edges 1216 and 1217 that elastically support the bone oscillator 1213 to the first and second frames 1214 and 1215, and an upper portion of the first frame 1214. The grill 1212 and the like are formed with a plurality of open holes 1218a so that the vibration by the first vibration plate 1212 can be output to the front surface, that is, the outer ear canal space.

The remaining parts except for the parts described in the above-described speaker 300 of each configuration will be described in more detail as follows.

The diaphragm 1212 is a more specific implementation of the first vibration material 312, and is provided to vibrate air which is a vibration body. That is, the diaphragm 1212 vibrates air in the inner ear canal space, thereby being applied to the auditory pathway bringing the stimulation of the auditory nerve through the eardrum.

The bone vibrator 1213 is a more concrete implementation of the second vibration material 313, and is provided to vibrate the bone which is the vibration body. That is, the bone oscillator 1213 is to be applied to the auditory pathway that brings the stimulation of the auditory nerve through the bone by vibrating the bone through the inner ear canal. The bone oscillator 1213 is preferably in a donut shape so as to vibrate the inner surface of the outer ear canal, but is also preferably in the form of vibrating only a specific portion of the inner surface of the outer ear canal.

On the other hand, the grill 1218 is configured to protrude forward so that the fitting can be made stable regardless of the operation of the speaker 1200 when the earphone 1200 for the earphone is fitted inside the ear. Therefore, the protrusion of the grill 1218 and the external auditory meatus inside the ear are in close contact with each other, so that the speaker 1200 is stably fitted inside the ear regardless of the vibration of the bone oscillator 1213.

In the earphone 1200, when the first electrical signal for reproducing the high-frequency band is input from the AV device to the first vibration coil 1208, the first vibration coil 1208 generates a magnetic field corresponding to the first electrical signal. While vibrating between the first magnet 1201 and the pole piece 1203, that is, in the first vibration space 1201a, the diaphragm 1212 vibrates together to vibrate air in the inner ear canal, thereby ultimately vibrating the eardrum. Let's go.

In addition, when the second electrical signal for reproducing the low frequency band from the AV device is input to the second vibration coil 1210, the second vibration coil 1210 generates a magnetic field corresponding to the second electrical signal and generates a first magnet ( The oscillating bone oscillator 1213 vibrates between the first magnet 1202 and the second magnet 1202, ie, in the second vibration space 1202a to vibrate the bone through the inner ear canal.

As a result, the high-frequency band is applied to the auditory nerve through the eardrum, and the low-band is applied to the auditory nerve through the bone. It becomes possible.

Of course, in the case of the speaker 1200 for earphones as described above, it is obvious that the speaker 300 has various application examples as described above.

<Example for Earphones>

13 is an exploded perspective view of the earphone 1300 according to the embodiment of the present invention.

The earphone is a device that allows the user to listen to the sound while the casing is fitted to the ear canal side while the speaker is stored in a predetermined casing. In general, earphones are known to be inadequate devices for listening to multiple sounds because they are small speakers. However, when the earphone speaker according to the present invention is applied to such earphones, it becomes possible to listen to a three-dimensional multi-acoustic sound that can hear the high and low bands.

That is, referring to FIG. 13, the earphone 1300 according to the present invention includes a connector 1301 connected to an AV device, and an electrical signal received from the AV device through the connector 1301 as sound. An earphone speaker 1200 according to FIG. 12, a connection line 1302 for transmitting an electrical signal input from an AV device through the connector 1301, and an earphone speaker 1200, and the earphone speaker 1200 are provided. It is configured to include a casing 1303, the front end is opened so that the vibration generated by the speaker for the earphone is output to the front.

The above-described configuration will be described in more detail as follows.

The connector 1301 is a connection terminal connected to an AV device.

The earphone speaker 1200 is a speaker for earphone according to the present invention described with reference to FIG. Therefore, the vibration of the air in the inner space of the ear canal and at the same time can vibrate the bones through the inner ear canal.

The connection line 1302 transmits a first electrical signal for reproduction of a high frequency range from a AV device and a second electrical signal for reproduction of a low frequency range to the speaker 1200 for earphones.

The casing 1203 is open at the front while accommodating the speaker 1200 for the earphone. On the other hand, a stepping protrusion 1303a, which protrudes a predetermined length from the rear side of the casing 1203 and can span the ear wheel, is formed. The straddling protrusion 1303a spans the ear wheels, so that the earphone speaker, that is, the casing 303, can be stably worn inside the ear regardless of whether the earphone speaker 1200 is operated. Of course, the protrusion 1303a does not necessarily need to be extended from the casing 1203, and may be preferable if the configuration can be fixed to the casing 1203.

On the other hand, since the above embodiments are only examples of the present invention, the present invention should not be construed as being limited to the above embodiments. In other words, the present invention should be construed as having a technical spirit that includes the contents described in the claims to be described later and the equivalent ranges of such contents.

According to the speaker according to the present invention as described in detail above, first, it is possible to hear a multi-sound by one speaker, second, the production cost is low because of the simple mechanical configuration, third, by one speaker Since multi-sound reproduction is possible, it can be applied as a multi-sound reproduction speaker to a miniaturized device.

In addition, according to the speaker and earphone for earphones according to the present invention, by implementing the appreciation of sound through the bone conduction and air conduction by one speaker, it is possible to implement a multi-sound by the earphone, it is easy to wear like a normal earphone There is convenience in use.

Claims (46)

A magnetic circuit device for forming a magnetic field on each of the first vibration space inside and the second vibration space disposed outside the first vibration space; A first vibration unit vibrating an object to be vibrated by generating vibration in accordance with a first electrical signal input on the first vibration space in which a magnetic field is formed by the magnetic circuit device; And A second vibration part provided outside of the first vibration part to vibrate a vibration object by generating vibration in response to a second electrical signal input on the second vibration space in which a magnetic field is formed by the magnetic circuit device; Speaker comprising a. The method of claim 1, The first vibrator, A first vibration coil generating a vibration force by generating a magnetic field that interferes with the magnetic field formed in the first vibration space according to the first electrical signal; And A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; Speaker comprising a. The method of claim 1, The second vibrator, A second vibration coil generating a vibration force by generating a magnetic field that interferes with the magnetic field formed in the second vibration space according to the second electrical signal; And A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; Speaker comprising a. The method of claim 1, The magnetic circuit device, A cylindrical first magnet having the first vibration space disposed therein; And A cylindrical second magnet provided outside the first magnet and disposing the second vibration space between the first magnet and the first magnet; A lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux flow of the first magnet and the second magnet; Speaker comprising a. The method of claim 4, wherein And a third magnet having a cylindrical shape disposed inside the first magnet and disposing the first vibration space between the first magnet and the first magnet. The method of claim 4, wherein And a cylindrical pole piece disposed inwardly of the first magnet and disposing the first vibration space between the first magnet and the first magnet. A first speaker unit provided inside for high-pitched reproduction; And A second speaker unit provided for reproducing bass outside the first speaker unit; Speaker comprising a. The method of claim 7, wherein The first speaker unit, A first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil for generating a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to a first electrical signal input for high sound reproduction; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; Including; The second speaker unit, A second magnetic circuit for forming a magnetic field outside of the first magnetic circuit in a predetermined second vibration space; A second vibration coil for generating a magnetic field that interferes with a magnetic field formed in the second vibration space by the second magnetic circuit according to a second electrical signal input for bass reproduction; A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; Speaker comprising a. A first speaker unit provided inside for sound range reproduction of a specific band; And A second speaker unit provided outside the first speaker unit for reproducing a sound range having a different band from the first speaker unit; Speaker comprising a. The method of claim 9, The first speaker unit, A first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil generating a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to a first electrical signal input for sound range reproduction of the specific band; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; Including; The second speaker unit, A second magnetic circuit for forming a magnetic field outside of the first magnetic circuit in a predetermined second vibration space; A second vibration coil for generating a magnetic field that interferes with the magnetic field formed in the second vibration space by the second magnetic circuit in accordance with a second electrical signal input for reproducing the other sound region; A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; Speaker comprising a. A first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil vibrating according to a first electrical signal input from the first vibration space formed by the first magnetic circuit; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second magnetic circuit for forming a magnetic field in a predetermined second vibration space outside of the first magnetic circuit; A second vibration coil vibrating according to a second electrical signal input in the predetermined second vibration space formed by the second magnetic circuit; A second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second vibration coil; Speaker comprising a. Cylindrical first magnets; A first vibration coil vibrating in response to an input first electrical signal at an inner side of the first magnet; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating outside the first magnet according to an input second electrical signal; A second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second vibration coil; Speaker comprising a. The method of claim 12, A cylindrical second magnet disposed to be spaced apart from the first magnet by a predetermined distance to the outside of the first magnet; And A lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux between the first magnet and the second magnet; More, The second vibration coil is a speaker, characterized in that vibrating in the first vibration space between the first magnet and the second magnet. The method of claim 12, A cylindrical pole piece disposed to be spaced apart from the first magnet by a predetermined distance inside the first magnet; And A lower plate supporting a rear end of the first magnet and the pole piece and directing the magnetic flux of the first magnet to the pole piece; More, And the first vibration coil vibrates between the first magnet and the pole piece. The method of claim 12, A cylindrical third magnet disposed in the first magnet to be spaced apart from the first magnet by a predetermined distance; And A lower plate supporting rear ends of the first magnet and the third magnet and inducing magnetic flux between the first magnet and the third magnet; More, The first vibration coil is a speaker, characterized in that vibrating between the first magnet and the third magnet. A cylindrical second magnet; A cylindrical pole piece disposed inside the second magnet to be spaced apart from the inner surface of the second magnet at a predetermined interval; A column-shaped third magnet disposed inside the pole piece to be spaced apart from the pole piece at a predetermined interval; A first vibration coil vibrating according to a first electrical signal input between the pole piece and a third magnet; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input between the second magnet and the pole piece; A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; Speaker comprising a. A magnetic circuit device constituting the first magnetic circuit and the second magnetic circuit; A first vibration coil vibrating according to a first electrical signal input on the first magnetic circuit of the magnetic circuit device; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input on the second magnetic circuit of the magnetic circuit device; And A second vibration material which vibrates the vibrating body while vibrating together according to the vibration of the second vibration coil; Including, The first vibration material and the second vibration material is a speaker, characterized in that for vibrating the vibrating body in the same direction. The method of claim 17, The magnetic circuit device comprises the first magnetic circuit for rotating the magnetic flux inside the first magnet by including a cylindrical first magnet, and the second magnetic for rotating the magnetic flux outside the first magnet. Make up the circuit, And wherein the first vibration coil vibrates inside the first magnet and the second vibration coil vibrates outside the first magnet. The method of claim 17, The magnetic circuit device may support the first magnet while having a cylindrical first magnet, a second magnet disposed outside the first magnet so as to be spaced apart from the first magnet by a predetermined interval, and a rear end of the first magnet and the second magnet. And a lower plate for inducing magnetic flux between the magnet and the second magnet, thereby forming the first magnetic circuit for rotating the magnetic flux inside the first magnet, and rotating the magnetic flux between the first magnet and the second magnet. Configure the second magnetic circuit, The first vibration coil, wherein the inside of the first magnet, the second vibration coil is a speaker, characterized in that vibrating between the first magnet and the second magnet. The method of claim 17, The magnetic circuit device may support the first magnet having a cylindrical shape, a cylindrical pole piece arranged to be spaced apart from the first magnet by a predetermined distance inside the first magnet, and the rear end of the first magnet and the pole piece. The first magnetic circuit for rotating the magnetic flux between the first magnet and the pole piece by including a lower plate for guiding the magnetic flux of one magnet to the pole piece, wherein the magnetic flux to rotate the outside of the first magnet Constitute a second magnetic circuit, The first vibration coil, characterized in that between the first magnet and the pole piece, the second vibration coil is characterized in that the vibrating outside the first magnet. A magnetic circuit device for forming a predetermined magnetic field in each of the first vibration space and the second vibration space outside of the first vibration space; A cylindrical first coil which vibrates while generating a magnetic field in accordance with a first electrical signal input in the first vibration space in which a magnetic field is formed by the magnetic circuit device; A first vibration material which vibrates the vibrating body while vibrating together according to the vibration of the first coil; A cylindrical second coil provided outside the first coil and vibrating while generating a magnetic field in accordance with a second electrical signal input on the second vibration space in which a magnetic field is formed by the magnetic circuit device; A second vibration material for vibrating the vibrating body while vibrating together according to the vibration of the second coil; Speaker comprising a. The method of claim 21, The second vibration material is a speaker, characterized in that the donut shape. A magnetic circuit device for forming a magnetic field on each of the first vibration space inside and the second vibration space disposed outside the first vibration space; A first vibration unit vibrating air in the inner ear canal space by generating vibration in accordance with a first electrical signal input on the first vibration space in which a magnetic field is formed by the magnetic circuit device; And A second vibrator provided outside the first vibrator to vibrate the bone through the inner ear canal by generating vibration in response to a second electrical signal input on the second vibration space in which a magnetic field is formed by the magnetic circuit device; ; Speaker for earphones comprising a. The method of claim 23, wherein The first vibrator, A first vibration coil generating a vibration force by generating a magnetic field that interferes with the magnetic field formed in the first vibration space according to the first electrical signal; And A vibrating plate vibrating air in the inner ear canal space while vibrating together according to the vibration of the first vibration coil; Speaker for earphones comprising a. The method of claim 23, wherein The second vibrator, A second vibration coil generating a vibration force by generating a magnetic field that interferes with the magnetic field formed in the second vibration space according to the second electrical signal; And A bone oscillator for vibrating bones by vibrating the inner ear canal while vibrating together according to the vibration of the second vibration coil; Speaker for earphones comprising a. The method of claim 23, wherein The magnetic circuit device, A cylindrical first magnet having the first vibration space disposed therein; And A cylindrical second magnet provided outside the first magnet and disposing the second vibration space between the first magnet and the first magnet; A lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux flow of the first magnet and the second magnet; Speaker for earphones comprising a. The method of claim 26, A speaker for earphones, which is disposed inward of the first magnet and further comprises a cylindrical third magnet for disposing the first vibration space between the first magnet and the first magnet. The method of claim 26, A speaker for earphones, which is disposed inward of the first magnet and further comprises a cylindrical pole piece for disposing the first vibration space between the first magnet and the first magnet. A first speaker unit for vibrating air in the inner ear space according to a first electrical signal input for high-pitched reproduction; And A second speaker unit vibrating a bone through an inner ear surface in accordance with a second electrical signal input for reproducing bass outside the first speaker unit; Speaker for earphones comprising a. The method of claim 29, The first speaker unit, A first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil configured to generate a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to the first electrical signal input; Vibration plate for vibrating the air in the outer ear space while vibrating together in accordance with the vibration of the first vibration coil; Including; The second speaker unit, A second magnetic circuit for forming a magnetic field outside of the first magnetic circuit in a predetermined second vibration space; A second vibration coil configured to generate a magnetic field that interferes with a magnetic field formed in the second vibration space by the second magnetic circuit according to an input second electrical signal; A bone vibrator for vibrating bone through an inner ear surface while vibrating together according to the vibration of the second vibration coil; Speaker for earphones comprising a. A first speaker unit for vibrating air in the inner ear canal space according to a first electrical signal input for sound range reproduction of a specific band; And A second speaker unit configured to vibrate a bone through an inner surface of the ear canal in response to a second electrical signal input for sound range reproduction different from the first speaker unit on a band outside the first speaker unit; Speaker for earphones comprising a. The method of claim 31, wherein The first speaker unit, A first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil generating a magnetic field that interferes with a magnetic field formed in the first vibration space by the first magnetic circuit according to a first electrical signal input for sound range reproduction of the specific band; And Vibration plate for vibrating the air on the inner ear space while vibrating together in accordance with the vibration of the first vibration coil; Including; The second speaker unit, A second magnetic circuit which forms a magnetic field in a predetermined second vibration space outside of the first magnetic circuit; A second vibration coil for generating a magnetic field that interferes with the magnetic field formed in the second vibration space by the second magnetic circuit in accordance with a second electrical signal input for the other sound range reproduction; Bone oscillator for vibrating bone through the inner ear surface while vibrating together according to the vibration of the second vibration coil; Speaker for earphones comprising a. A first magnetic circuit for forming a magnetic field in a predetermined first vibration space; A first vibration coil vibrating according to a first electrical signal input from the first vibration space formed by the first magnetic circuit; Vibration plate for vibrating the air in the inner ear canal space while vibrating together in accordance with the vibration of the first vibration coil; A second magnetic circuit for forming a magnetic field in a predetermined second vibration space outside of the first magnetic circuit; A second vibration coil vibrating according to a second electrical signal input in the predetermined second vibration space formed by the second magnetic circuit; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil; Speaker for earphones comprising a. Cylindrical first magnets; A first vibration coil vibrating in response to an input first electrical signal at an inner side of the first magnet; Vibration plate for vibrating the air in the inner ear canal space while vibrating together in accordance with the vibration of the first vibration coil; A second vibration coil vibrating outside the first magnet according to an input second electrical signal; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil; Speaker for earphones comprising a. The method of claim 34, wherein A cylindrical second magnet disposed to be spaced apart from the first magnet by a predetermined distance to the outside of the first magnet; And A lower plate supporting rear ends of the first magnet and the second magnet and inducing magnetic flux between the first magnet and the second magnet; More, The second vibration coil is a speaker for earphones, characterized in that vibrating in the first vibration space between the first magnet and the second magnet. The method of claim 34, wherein A cylindrical pole piece disposed to be spaced apart from the first magnet by a predetermined distance inside the first magnet; And A lower plate supporting a rear end of the first magnet and the pole piece and directing the magnetic flux of the first magnet to the pole piece; More, The first vibration coil is a speaker for earphone, characterized in that vibrating between the first magnet and the pole piece. The method of claim 34, wherein A cylindrical third magnet disposed in the first magnet to be spaced apart from the first magnet by a predetermined distance; And A lower plate supporting rear ends of the first magnet and the third magnet and inducing magnetic flux between the first magnet and the third magnet; More, The first vibration coil, the earphone for the earphone, characterized in that vibrating between the first magnet and the third magnet. A cylindrical second magnet; A cylindrical pole piece disposed inside the second magnet to be spaced apart from the inner surface of the second magnet at a predetermined interval; A column-shaped third magnet disposed inside the pole piece to be spaced apart from the pole piece at a predetermined interval; A first vibration coil vibrating according to a first electrical signal input between the pole piece and a third magnet; A vibrating plate vibrating air in the inner ear canal space while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input between the second magnet and the pole piece; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil; Speaker for earphones comprising a. A magnetic circuit device constituting the first magnetic circuit and the second magnetic circuit; A first vibration coil vibrating according to a first electrical signal input on the first magnetic circuit of the magnetic circuit device; A diaphragm for vibrating air in the inner ear canal space while vibrating together according to the vibration of the first vibration coil; A second vibration coil vibrating according to a second electrical signal input on the second magnetic circuit of the magnetic circuit device; And A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second vibration coil; Speaker for earphones comprising a. The method of claim 39, The magnetic circuit device comprises the first magnetic circuit for rotating the magnetic flux inward of the first magnet by including a cylindrical first magnet, and the second magnetic for rotating the magnetic flux outward of the first magnet. Make up the circuit, The first vibration coil is an inner speaker of the first magnet, the second vibration coil speaker for earphones, characterized in that vibrating outside the first magnet. The method of claim 39, The magnetic circuit device may support the first magnet while having a cylindrical first magnet, a second magnet disposed outside the first magnet so as to be spaced apart from the first magnet by a predetermined interval, and a rear end of the first magnet and the second magnet. And a lower plate for inducing magnetic flux between the magnet and the second magnet, thereby forming the first magnetic circuit for rotating the magnetic flux inside the first magnet, and rotating the magnetic flux between the first magnet and the second magnet. Configure the second magnetic circuit, The first vibration coil, the speaker for the earphone, characterized in that the second vibration coil vibrates between the first magnet and the second magnet inside the first magnet. The method of claim 39, The magnetic circuit device may support the first magnet having a cylindrical shape, a cylindrical pole piece arranged to be spaced apart from the first magnet by a predetermined distance inside the first magnet, and the rear end of the first magnet and the pole piece. The first magnetic circuit for rotating the magnetic flux between the first magnet and the pole piece by including a lower plate for guiding the magnetic flux of one magnet to the pole piece, wherein the magnetic flux to rotate the outside of the first magnet Constitute a second magnetic circuit, The first vibration coil, the speaker for the earphone, characterized in that between the first magnet and the pole piece, the second vibration coil vibrates outside the first magnet. A magnetic circuit device for forming a predetermined magnetic field in each of the first vibration space and the second vibration space outside of the first vibration space; A cylindrical first coil which vibrates while generating a magnetic field in accordance with a first electrical signal input in the first vibration space in which a magnetic field is formed by the magnetic circuit device; A diaphragm vibrating air in the inner ear canal space while vibrating together according to the vibration of the first coil; A cylindrical second coil provided outside the first coil and vibrating while generating a magnetic field in accordance with a second electrical signal input on the second vibration space in which a magnetic field is formed by the magnetic circuit device; A bone oscillator for vibrating bone through the inner ear canal while vibrating together according to the vibration of the second coil; Speaker for earphones comprising a. The method of claim 43, The bone vibrator is a speaker for earphones, characterized in that the donut shape. A connector connected to the AV device; Two types of vibrations corresponding to two different sound ranges according to the first electrical signal and the second electrical signal received from the AV device through the connector are respectively generated, and the vibration according to the first electrical signal is generated in the inner space of the ear canal. A speaker configured to vibrate the air on the vibration and vibrate according to the second electrical signal to vibrate a bone through an inner surface of the ear canal; A connection line for transmitting the first electrical signal and the second electrical signal input from the AV device through the connector to the speaker; A casing in which the speaker is accommodated and the front end of the casing is opened so that vibration generated by the speaker can be output forward; Earphones comprising a. The method of claim 45, Earphones, characterized in that the casing protrusion is formed over the ear wheels to secure the casing.

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