KR20090120951A - Speaker apparatus - Google Patents

Abstract

PURPOSE: A speaker apparatus is provided to help the hearing-impaired and a normal people in a fringe area to hear a sound by outputting a vibration sound and a general sound. CONSTITUTION: A speaker unit(100) includes a housing(10), a voice coil(20), a magnet(30), a yoke(40), a vibration plate(50), and a cover(60). The voice coil is installed at the bottom of an internal housing, and a magnet is arranged inside and outside of the voice coil. The magnet is combined with a yoke, and a vibration plate is contacted with the circumference of the yoke. An edge of the vibration plate is supported by a housing, and a cover is made of a soft synthetic resin or a silicon performs a mastoid role of the bone conduction speaker. The magnet is classified into an inner magnet and an external magnet.

Description

Speaker apparatus {speaker apparatus}

The present invention relates to a speaker device, and more particularly, it is possible to simultaneously output a vibrating sound and a general sound by bone conduction, and to implement a clear sound quality in a wide range so that high power vibration sound and general sound can be simultaneously listened to. The present invention relates to a speaker device that can be applied to a portable sound device such as a product having a very small product size as well as being able to listen to the hearing impaired as well as the general public in hearing loss environment, and to reduce the overall size of the speaker to be miniaturized. .

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

Air conduction is a method in which sound is transmitted through the eardrum to the inner ear. In general, the vibration of the sound transmitted to the air is transmitted to the eardrum and the vibration is “Wow” through the three bones located in the eardrum. Is delivered.

Therefore, the wow (snail tube) is filled with a liquid called rinba liquid, and the vibration of the liquid is converted into an electrical signal and transmitted to the auditory nerve so that the human brain recognizes sound, which is a general acoustic speaker device.

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

In other words, acoustic vibrations applied to the surface of the skin around the ear are transmitted directly to the cochlea through the skull, so that even if the eardrum or the ear bones are abnormal, if the cochlear or auditory nerve is normal, bone conduction through the skin is ensured. Bone conduction speaker device is applied to the principle that can hear sound.

In such a speaker device, in particular, the basic configuration of a general bone conduction speaker based on the bone conduction principle, that is, as shown in FIG. 1, the current is applied to the electrode terminal plate 1 from an external power supply source, so that the electrode terminal plate 1 When a current is supplied to the voice coil 2 along the coil from), the voice coil 2 induces a change in the magnetic field from the voice signal electrical energy.

That is, when a current is applied to the voice coil 2, a magnetic field is generated between the voice coil 2 located in the gap G of the magnetic circuit composed of the top plate 3, the magnet 4 and the yoke 5. As it happens, Fleming's left-hand rule holds.

Then, when the voice coil 2 is fixed, magnetic fields formed between the voice coil 2, the upper plate 3, the magnet 4, and the yoke 5 mutually engage with each other by applying attraction and repulsive force. The upper plate 3, the magnet 4, and the yoke 5, which are circuits, vibrate up and down.

At this time, free vibration of the magnetic circuit is suppressed by the diaphragm 6 provided at the top of the yoke 5 to maintain a constant vertical vibration. This vibration is transmitted to the skin surface of the head of the human head in contact with the mastoid 8 through the mastoid 8, which is the uppermost portion of the fixed rivet 7, and as a result, the vibration force for listening to the bone acoustic sound vibration is obtained. Obtained.

That is, a fixed rivet which fixes the voice coil 2 to the base plate 9 and constitutes a magnetic circuit capable of up and down vibration with the yoke 5, the magnet 4 and the upper plate 3, and fixes them together. By providing a mastoid (8) for transmitting acoustic vibrations to the top of the (7) to the outside, the head bone forming the human skull is directly vibrated through the skin surface to stimulate the auditory nerve through bone conduction. Normal people as well as various hearing loss people will hear the sound.

Most of the bone conduction speakers in the related art based on the bone conduction principle have been developed for the hearing-impaired or the hearing-impaired, and have been mainly applied to listening to low-power acoustic vibrations as a configuration for voice listening.

In particular, in recent years, by using the general sound and bone conduction principles as described above, the hearing impaired as well as the general public also listens to music through a mobile device such as a mobile phone or a portable MP3 audio device, etc. As the use expands, speaker products capable of listening to bone conduction vibrations as well as general acoustics are being released.

As a prior art, Patent Registration No. 10-390003 "Goldo speaker using a base plate and a mobile phone having the same" and Patent Publication No. 10-2006-58078 "Function Speaker for a portable terminal" has been disclosed.

The " goldo speaker using a floor plate and a mobile phone having the same " are bone conduction speakers having both a vibration listening function and a sound listening function, and are configured to selectively listen to sound and listen to vibration.

And, "functional speaker for portable terminal" uses a plurality of magnets and separate vibration and voice coils to configure a magnetic circuit to obtain a high vibration force output for listening to music, the magnet for the speaker directly on the vibration magnetic circuit It is a technology that consists of a bundle of magnetic circuits by additionally configuring a circuit.

Such conventional speaker devices are configured to simultaneously or selectively listen to the general sound and the bone conduction vibration sound, but have a complicated configuration to obtain the vibration output for generating two types of sound at the same time. There is a limit that is applied and used.

In addition, most conventional speaker devices have a cylindrical shape to form a magnetic circuit for generating general sound and bone conduction vibration sound.

In particular, the general acoustic speaker is being continuously developed and miniaturized to be applied to small acoustic devices such as mobile phones and MP3 as well as general small headphones and earphones.

However, a bone conduction speaker device or a speaker device in which a general sound and a bone conduction speaker device are combined is a technology for miniaturizing the product size of a speaker device as the size of a component increases to construct a bone conduction magnetic circuit for generating vibration sound. There was a very difficult problem.

In addition, most of the bone conduction speaker devices in the related art must maintain the shape of the voice coil, the yoke, the diaphragm, and the mastoid that form the magnetic circuit for generating the vibration sound even in miniaturization. It was.

As a result, when the bone conduction speaker is mounted as a speaker of a mobile phone, the hearing impaired person and the general public have tried to use it in various forms for use in a hearing loss area such as an industrial site with high ambient noise. There is a problem in that it can be applied to the size of mobile phone products that are getting thinner, so that they can be applied to portable small audio devices such as mobile phones and MP3s. There is an urgent need for development of a speaker device that can be generated.

The present invention has been made to solve the above-mentioned problems, the object of which is to enable the simultaneous output of the oscillating sound and the general sound by bone conduction, but can implement a clear sound quality of a wide range and high output vibration sound and general By allowing the user to listen to the sound, not only the hearing impaired but also the general public can listen to the sound in a hearing-affected environment, and the overall size of the speaker can be reduced and miniaturized. It is to provide a speaker device made so that.

In order to achieve the above object, a speaker device according to the present invention includes a magnet and a voice coil installed inside a housing positioned inside the casing, coupled with a yoke, and a diaphragm installed outside the yoke. The magnet is divided into an inner magnet and an outer magnet and disposed on both outer surfaces of the yoke and the yoke, respectively, and the diaphragm coupled to the yoke has a direction coinciding with the direction of the outer magnet of the yoke. There is a feature in the form of a rectangle in the longitudinal direction.

Accordingly, the speaker device according to the present invention is capable of simultaneously listening to high-power general sound and bone conduction vibration sound having a clear sound quality, as well as a rectangular shape of the speaker, which is a speaker device of a portable audio device and a small mobile phone. Applicable, the hearing impaired and the general public can provide music quality and Yang Qing call quality in a noisy environment.

The diaphragm used in the present invention has a rectangular frame portion forming an outer shape, and the inside of the frame portion is made of a linear type formed integrally connected with a curved line symmetrical with respect to the middle.

In addition, the diaphragm is configured such that the inner bending line of the diaphragm forms a symmetrical structure so that a stronger vibration is generated, but the shape of one portion is asymmetrically induced to induce shaking of the unstable diaphragm.

In another embodiment, a cutting portion is formed at a selected portion of the inner bending line of the diaphragm to induce shaking of the unstable diaphragm, thereby generating a stronger vibration.

In another embodiment, the diaphragm is formed in a rectangular shape, and a plurality of slots are arranged in a predetermined pattern shape in a symmetrical form with respect to the middle thereof, thereby forming a plate type.

The plate-type diaphragm has a different shape, and the slots of the diaphragm form a symmetrical structure, but a portion of the diaphragm is asymmetrically formed to induce shaking of the unstable diaphragm, thereby generating a stronger vibration.

The slot is formed asymmetrically with respect to the middle of the inside of the diaphragm is configured to generate a stronger vibration by inducing the tremor of the unstable diaphragm.

In addition, the diaphragm may also be configured as an oval having a rectangular shape.

The speaker device according to the present invention is accompanied by a configuration for improving the vibration efficiency generated in the magnetic circuit according to the rectangular configuration.

As a configuration for this, the yoke is formed with both stepped sides and the outer magnet is installed from the upper end to the lower side of the stepped, the lower end adjacent to the lower end of the outer magnet is further formed a projection in the outward direction do.

According to this configuration, in the rectangular speaker device, magnets are concentrated on both side surfaces of the yoke in order to maximize the vibration output efficiency of the unidirectional portion in preparation for the vibration output efficiency of the unidirectional portion by the magnetic circuit. By adding a protrusion to the end of the yoke, which is located at the lower end of the magnet, it is possible to maximize the magnet density around the protrusion to maximize the vibration output by the entire magnetic circuit of the rectangular type.

On the other hand, according to another embodiment of the present invention, in the speaker device comprising a magnet and a voice coil is installed inside the housing which is located inside the casing is coupled to the yoke and the diaphragm is installed outside the yoke, the housing The outer side of the film is assembled in the state of maintaining the gap with the diaphragm, the outer cover is configured to be installed in a state spaced apart from the film.

According to this configuration, the vibration device mainly outputs the vibration sound mainly in the bass band, and the combination of the film to output the vibration sound mainly in the high band, so that the speaker device of the present invention in a wide range from low to mid and high bands It is possible to output clear general sound and bone conduction vibration sound.

In addition, since the vibration sound can be listened to as being in contact with the user's skin by the cover, the hearing impaired or the general public can listen in the hearing loss area.

In addition, in the speaker device according to the present embodiment, the cover is supported on the housing and at the same time, the outer periphery is further extended outward to form ribs so as to be assembled to the casing.

According to this configuration, as the whole speaker device is assembled to the casing by the cover, the vibration sound generated by the speaker device is not transmitted to the casing, so that the vibration sound generated by the magnetic circuit is not distributed to the surroundings but is output only forward. Therefore, it is possible to listen to high-power vibration sound having a clear and wide range.

The edge of the cover is formed by forming a contact protrusion protruding outwardly connected to the rib.

When the vibration sound is heard while being in contact with the user's skin by the contact protrusion, the vibration sound is reliably transmitted through the contact protrusion.

The cover is formed with a plurality of through-holes are also output along with the clear general sound emitted from the film through the space portion formed in the front portion of the cover that is not in contact with the skin by the contact protrusions and the clear normal, high-frequency general sound and Simultaneous listening of the bone conduction vibration sound in the low band becomes possible.

And, by the configuration of the cover is to exhibit an excellent function that can both listen to the sound in the contact and non-contact state of the skin of the bone conduction transmission area of the user.

In addition, a recess is formed in the inner center of the cover to prevent the rear center portion of the cover from contacting the diaphragm or the film, thereby preventing noise and the like from occurring when the diaphragm and the cover come into contact with the film. .

The film is formed with a plurality of holes to release the internal heat that can be generated inside the magnetic circuit through the holes and the cover to maintain the quality and durability of the spaker device for a long time, a plurality of formed on the film With the diaphragm that the bass band is output by the formation pattern of the hole, it is configured to be able to properly adjust according to the sound output specification of the portable acoustic apparatus applying the sound quality to the middle and high bands generated in the film.

As described above, in the speaker device according to another embodiment of the present invention, wherein the film and the cover are configured together, the diaphragm is formed in a rectangular shape having an outline as a form, and is symmetrical with respect to the middle in the inside of the frame. The curved line of the form is integrally formed to form a linear type.

In addition, the diaphragm is configured to form a symmetrical structure of the inner bent line of the diaphragm but form a portion of the diaphragm asymmetrically to induce tremor of the unstable diaphragm to generate a stronger vibration.

On the other hand, the diaphragm is another form, the diaphragm is formed in a rectangular shape in which a plurality of slots are arranged in a symmetrical form with respect to the middle in a predetermined pattern form is made of a plate type.

Slots of the plate-type diaphragm form a symmetrical structure, but a portion of the diaphragm is asymmetrically formed to induce tremor of the unstable diaphragm so that a stronger vibration is generated.

The slot is formed asymmetrically with respect to the middle of the diaphragm to induce tremor of the unstable diaphragm so that a stronger vibration is generated.

As described above, the speaker device according to the present invention can be configured to simultaneously output a vibration sound and a general sound due to bone conduction to be applied to a mobile phone and a portable small audio device, and can realize a clear sound quality of a wide range and high power vibration. By allowing the user to listen to the sound and general sound, not only the hearing impaired but also the general public can listen to the sound in a hearing-affected environment, and the overall size of the speaker can be reduced and miniaturized. Become applicable.

Accordingly, the design of the small size and thin thickness through the rectangular speaker device according to the present invention can generate a wide range and clear sound quality without employing a circular speaker for obtaining a vibration sound of high power specifications As a speaker of a mobile device such as a mobile phone, it can be manufactured in a small size that can be applied to all portable small acoustic device products, and thus, the sound quality is wide through the bone conduction in a place where there is a lot of ambient noise such as an industrial site. It will provide an excellent effect of being able to listen to the music.

In addition, as the assembly structure with the casing by the hanger assembly method of the cover provided on the front of the speaker does not generate noise due to the acoustic vibration, communication security can be maintained in the case of a mobile phone, and when listening to music of high power The noise generated by the vibration is prevented to exhibit the effect.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an assembly cross-sectional view showing the configuration of a speaker device according to an embodiment of the present invention. 3 is a longitudinal cross-sectional view of FIG. 2; Figure 4 is an enlarged plan view of the main portion of the speaker device mounted on the product case according to an embodiment of the present invention. 5 to 9 are plan views showing various embodiments of the diaphragm for maximizing the vibration output applied to the speaker device according to the present invention.

Referring to this, the speaker device 100 according to the present invention has a basic configuration, in which a voice coil 20 is installed at the bottom of the housing 10, and a magnet 30 is provided at inner and outer regions of the voice coil 20. Disposed and coupled with yoke 40.

In addition, the outer surface of the yoke 40 is provided with a diaphragm 50, the edge of which is supported by the housing 10, the front of the soft synthetic resin that serves as a mastoid of the bone conduction speaker device or The cover 60 is made of silicon is provided.

A power supply line (not shown) is connected to the lower end of the housing 10 in a circuit.

Speaker device 100 of the present invention having such a basic configuration will be described with an example that is applied to the speaker of the mobile phone which is the smallest of the portable audio device products with a built-in speaker for its own sound output, general sound and bone conduction As an example, the vibration sound can be selectively listened together.

The casing 70 of the mobile phone is generally designed to have a small size and a thin thickness, and in particular, a portion on which the speaker device 100 is mounted is an upper portion of a liquid crystal screen (not shown). The installation space for embedding 100) is a position where the width and width are very narrow, especially the width is considerably narrower than the width.

Therefore, in the related art, since the speaker device is manufactured only in a circular shape, the speaker device which generates both general sound and bone conduction vibration sound cannot be applied to the mobile phone.

Therefore, the speaker device applied to the casing 70, such as a mobile phone with such a restrictive element, does not constitute a circular shape, but has a narrow upper and lower widths, and a wider left and right widths. In consideration of the above fact, the speaker device of the present invention has a rectangular shape.

Accordingly, the boy coil 20, the yoke 40, the diaphragm 50, and the cover 60 serving as the mastoid are provided in the rectangular speaker device 100 according to the present invention. It looks rectangular.

And, as described above, while being able to generate the same or more vibration sound as the circular speaker device while forming a rectangular shape, it is configured to enable clear sound quality of a wide range and high output vibration sound.

That is, the housing 10 is formed in the shape of a rectangular box having an upper side open, and the voice coil 20 wound in the form of a rectangular frame is installed at the bottom of the housing 10.

The yoke 40 has a rectangular shape having a horizontal width and a vertical width that can be accommodated into the housing 10, and a central portion of the yoke 40 is assembled to the diaphragm 50 assembled to the upper end of the housing 10. A fixing portion 41 is provided, and a stepped portion 42 is formed around the fixing portion 41, and a space is provided therein so that the magnet 30 is installed over the inside and the outside.

The magnet 30 is divided into an inner magnet 31 and an outer magnet 32, and the inner magnet 31 is installed inside the yoke 40 having a rectangular shape, and the step 42 of the yoke 40 is provided. The outer magnets 32 are disposed on both outer surfaces of the.

The yoke plate 43 is attached to the bottom of the inner magnet 31 to form a magnetic circuit for generating vibration together with the voice coil 20 disposed between the inner and outer magnets 31 and 32. .

In addition, the diaphragm 50 coupled to the yoke 40 has a rectangular shape having a longitudinal direction in a direction consistent with the direction of the outer magnet 32 of the yoke 40.

In addition, the diaphragm 50 has an assembling hole 57 for assembling with the fixing portion 41 of the yoke 40 at the center, and an outer mold 51 is formed in a rectangular shape, and the mold 51 Inside the portion is formed integrally connected to the curved line 52 of symmetrical shape with respect to the middle.

According to the speaker device 100 according to the present invention having the basic configuration as described above, the housing 10, the voice coil 20, the yoke 40, and the diaphragm 50 are formed in a rectangular shape, and the magnet By arranging the external magnets 32 on both sides of the yoke 40 with respect to the long side of the yoke 40, each of the 30 magnets has a high power output with clear sound quality of the same performance as that of the circular speaker device, while maintaining a small rectangular shape. General sound and bone conduction vibration sound are configured to be heard at the same time.

Accordingly, the speaker device 100 of the present invention has a rectangular shape, and thus can be applied as a speaker device of a mobile phone having a small installation space and a small size. And good call quality.

The speaker device 100 having such a basic configuration is configured to be assembled to hang in a hanger manner so that the outer surface of the housing 10 does not come into contact with the inner surface of the casing 70 while being accommodated inside the casing 70 when mounted to the mobile phone.

That is, as shown in Figure 2, as an example, it can be configured to be assembled in a hanger method using the diaphragm 50, the diaphragm 50 is mainly made of a metal having elasticity, made of a rectangular, The outer periphery of the diaphragm 50 is further extended to the outside, respectively, it can be configured to further form a rib (53).

The ribs 53 protrude to the outside of the housing 10 and the cover 60 through the through grooves 11 formed on both sidewalls of the housing 10 and the cover 60, respectively. A circular fastening portion 55 having a 54 is provided and assembled as a fastening screw 72 to a boss 71 protruding in the casing 70.

Therefore, the speaker device 100 is assembled in a structure that is suspended inside the casing 70 by the assembly structure of the ribs 53 and the boss 71 of the diaphragm 50, the cover 60 is the front of the casing 70 As the cover 60 is assembled in a slightly protruding state through the assembly groove 74 formed in the outside, when the contact with the skin around the ear together with the general sound, the hearing sound is heard through the bone conduction path. Sound can be heard even in a hearing loss environment.

Here, the cover 60 is made of a soft synthetic resin or silicone material, the front portion is made of a flat surface so as to contact the user's skin, the lower side may be made of a form surrounding only the open portion of the housing 10 2, 3, and is configured to surround the entire outer surface of the housing.

In addition, the diaphragm 50 according to the present embodiment is configured to be modified in various forms to increase the vibration efficiency.

That is, the diaphragm 50 is formed in a linear type, the curved line 52 formed in the inside of the rectangular frame 51, as shown in Figure 5 with respect to the middle of the frame 51 In a symmetrical configuration, a portion of the shape is deformed to form a curved line 52 of asymmetrical shape as shown in FIG.

In addition, as another form, the diaphragm 50 is formed in a linear type as shown in FIG. 7, and a cutout portion 522 is formed at a selected portion of the inner bending line 52 to form an asymmetrically unstable diaphragm ( 50) is configured to induce tremor to generate strong vibrations.

When the vibration caused by the magnetic circuit formed by the voice coil 20 and the yoke 40 and the magnet 30 by the power supply by such a configuration causes an unstable vibration by the structure of the bend line 52 having an asymmetric shape. By induction, the vibration is stronger than the symmetrical bend 52 form.

Accordingly, the speaker device 100 according to the present invention exhibits an excellent speaker device function capable of generating general sound and vibration sound while having a small rectangular shape that can be installed in a narrow space inside the mobile phone casing 70. Will be done.

 In addition, the diaphragm 150 has another shape, and is formed in a rectangular shape, and a plurality of slots 56 are arranged in a predetermined pattern shape in a symmetrical form with respect to the middle thereof to form a plate type.

The plate-type diaphragm 150 is formed in a plate-like form different from the above-described linear type diaphragm 50 has the advantage that the vibration sound of the high band as well as the low band is also output.

In addition, the slot 56 of the diaphragm 150 has a symmetrical structure, but a portion of the diaphragm is asymmetrically formed to induce a tremor of the unstable diaphragm 150 to generate a stronger vibration.

The slot 56 is another form, which is formed asymmetrically with respect to the middle of the inside of the diaphragm 150 to induce tremor of the unstable diaphragm to generate a stronger vibration.

In addition, when the plate-type diaphragm 150 is mounted on the mobile phone as the linear diaphragm 50, the outer surface of the housing 10 does not come into contact with the inner surface of the casing 70 while being accommodated in the casing 70. Of course, it can be configured to be assembled to hang in a hanger manner.

That is, as shown in FIG. 8, the outer periphery of the diaphragm 150 further extends to the outside to form ribs 53, which ribs 53 are formed on both side walls of the housing 10 and the cover 60. Protruding outward through the through grooves 11 formed in the respective grooves, and a circular fastening portion 55 having a fastening hole 54 is provided at an end thereof to the bosses 71 protruding in the casing 70. It can be configured to be assembled as the fastening screw 72.

In addition, as shown in FIG. 9, the diaphragm having a rectangular shape without the rib 53 may be mounted and used in the housing 10.

In addition, the diaphragm 50, 150 is not shown in the drawing as another configuration, but may also be configured as an oval made of a deformed in a rectangular shape, the diaphragm having such a modified configuration is a vibration in the configuration of the magnetic circuit It is a factor that affects efficiency, so it can be applied in various forms.

The speaker device 100 according to the present invention is accompanied by a configuration for improving the vibration efficiency generated in the magnetic circuit according to the rectangular configuration.

As the configuration for this, the yoke 40 is further provided with the external magnet 32 extends from the upper end of the stepped 42 formed on both sides to the lower side, the outer magnet 32 At the lower end of the yoke 40 adjacent to the lower end, the protrusion 44 is further formed as bent outwardly.

In the rectangular speaker device formed by the projections 44 formed at the lower end of the yoke 40, the vibration output efficiency of the long direction portion may be maximized in contrast to the vibration output efficiency of the unidirectional portion by the magnetic circuit. .

That is, as described above, the external magnets 32 are disposed on both sides of the step 42 formed around the fixing part 41 of the yoke 40, and the lower ends of the inner and outer magnets 31 and 32, respectively. The protrusion 44 is added to the end of the yoke 40 to be positioned.

Therefore, the magnetic density around the protrusion 44 of the yoke 40 is improved as much as possible by the magnetic field generated by the voice coil 20 by the power supply. Accordingly, the vibration output generated in the magnetic circuit forming the rectangular type is reduced. It can be maximized as much as possible.

10 to 12 illustrate a speaker device according to another embodiment of the present invention, and the same names and symbols will be used as they are in the description.

That is, the magnet 30 and the voice coil 20 are installed in the housing 10 located inside the casing 70 to be combined with the yoke 40 and the diaphragm 50 to the outside of the yoke 40. In the speaker device comprising a) is provided, the film 80 is assembled on the outside of the housing 10 while maintaining a distance from the diaphragm 50, the cover 60 on the outside Installed and spaced apart from the film 80 is configured.

According to such a configuration, the diaphragm 50 which mainly outputs the vibration sound mainly in the low frequency band and the film 80 which outputs the vibration sound mainly in the middle and high frequency bands are combined to constitute a wide range of sound ranges from the low band to the mid and high bands. Vibration sound can be listened to, and clear and high-power general sound and bone conduction vibration sound can be simultaneously listened to.

In addition, since the cover 60 disposed outside the film 80 is in contact with the user's skin, the vibration sound can be listened to, so that the hearing impaired or the general public can listen in the hearing loss area.

In addition, in the speaker device according to the present embodiment, the cover 60 is made of soft synthetic resin or silicone, which is supported by the housing 10 and at the same time the outer periphery further extends to the outside so that the assembly rib ( It is configured to be assembled to the casing 70 by forming 60.

That is, as the entire speaker device 100 is assembled to the casing 70 by the cover 60 in a hanger manner, the vibration sound generated from the diaphragms 50 and 150 is casing by the cover 60 itself elasticity. Since the vibration sound generated in the magnetic circuit is not transmitted to 70 and is output to the front without being distributed to the surroundings, it is possible to listen to the vibration sound of high output having a clear and wide range.

In addition, at the edge of the cover 60, the assembly rib 61 and the connecting portion is bent and projected outward to form a contact protrusion 62 forming a semicircular shape.

When listening to the vibration sound in the state in contact with the user's skin by such a contact protrusion 62 provides the effect that the vibration sound is surely transmitted to the skin around the ear through the contact protrusion 62.

In addition, the contact protrusion 62 maintains proper elasticity when the entire speaker device 100 is slightly pushed backward when the user touches the user's skin, thereby preventing the user from transmitting the stimulating vibration sound to the skin. It gives a good feeling of touch and at the same time it can listen to good quality vibration sound.

In addition, the cover 60 is formed by a plurality of through-holes 63 are formed in the front portion 64 of the cover 60, which is located in the inner side by the contact protrusion 62 and does not contact the skin By vividly outputting the clear general sound emitted from the film 80 through the unit 65, it is possible to simultaneously listen to the clear sound of the normal and high band and the bone conduction vibration sound of the low band.

In addition, by the configuration of the cover 60, it is possible to exert an excellent function capable of both sound listening in the contact and non-contact state of the skin of the bone conduction transmission area of the user.

In addition, a recess 66 is formed at the inner center of the cover 60 such that the rear center portion of the cover 60 does not come into contact with the diaphragm 50, 150 or the film 80. The 150 and the cover 60 serve to prevent noise generated by contacting the film 80 and the like.

On the other hand, the film 80 is formed by arranging a plurality of holes 81 at appropriate intervals, the holes 81 through the heat generated in the voice coil 20 through the holes 81 and the cover 60 By emitting along with the sound through the (63) to prevent overheating of the voice coil (20) and its peripheral components it is possible to ensure the quality and durability of the speaker device 100 for a long time.

And, along with the diaphragm 50, 150 that outputs the low band in accordance with the formation pattern of the plurality of holes 81 formed in the film 80, the sound in the middle and high band generated in the film 80 together It can be applied so that the sound quality and sound range of the speaker can be properly adjusted according to the sound output specification of the portable audio device.

As described above, the diaphragm 50 and 150 applied to the speaker device 100 according to another embodiment of the present invention having the film 80 and the cover 60 together are as shown in FIGS. 5 to 9. Modified in various forms to increase the vibration efficiency is configured to be applied to the speaker device according to this embodiment is configured to generate a stronger vibration.

Referring to Figures 10 to 12 the operation of the speaker device of the present invention configured as described above is as follows.

Speaker device 100 applied to the mobile phone is a vibration of the sound and sound that can be heard when the contact around the ear, and when not making a call will also exhibit the function of a general acoustic speaker for listening to music.

Therefore, when the user comes in close contact with the speaker device 100 around the ear to make a call, the cover 60 serving as a mastoid comes into contact with the skin and only contacts the contact protrusion 62 of the cover 60.

Accordingly, by the elasticity of the cover 60, the user hears the vibration sound of high quality generated by the magnetic circuit, wherein the vibration sound generated during the call process is covered by the diaphragm 50, 150. Mostly transmitted to (60), the user (deaf or hearing impaired) can hear the vibration sound through the bone conduction path, regardless of the surrounding environment, even if the user is hard to hear or noisy.

And, in the case of the general public is discharged through the through hole 63 of the film portion 80 and the through hole 63 of the space portion 65 formed between the contact protrusion 62 and the front portion 64 of the cover 60. By listening to the sound as well, you can listen to the sound with clear sound in a wide range.

On the other hand, when the cover 60 is in a non-contact state with the skin, the speaker 100 has a high output low, medium, and high frequency vibration sound generated from the film 80 and the diaphragm 50, 150. Vibration sound can be output in the form of sound through the through hole 63 of the cover 60 and the hole 81 of the film 80 even in the state of not being in close contact with the skin through the air transmission path of It is possible to listen to the sound, so that the general public can make a video call that is being serviced as a general small speaker, and as a speaker phone, the music can be heard with other people.

In the above, the description of the embodiment of the speaker device according to the present invention is merely exemplary, and the present invention is not limited thereto, and may be variously modified and modified within the scope of the claims.

1 is a schematic cross-sectional view for explaining the configuration of a conventional bone conduction speaker in the related art.

Figure 2 is an assembly cross-sectional view showing the configuration of a speaker device according to an embodiment of the present invention.

3 is a longitudinal cross-sectional view of FIG. 2;

Figure 4 is an enlarged plan view of the main portion of the speaker device mounted on the product case according to an embodiment of the present invention.

5 to 9 are plan views showing various embodiments of the diaphragm for maximizing the vibration output applied to the speaker device according to the present invention.

10 is an assembled cross-sectional view showing the configuration of a speaker device according to another embodiment of the present invention.

11 is a longitudinal sectional view of FIG. 10;

12 is an enlarged plan view of a main part of a state in which a speaker device is mounted on a product case according to another embodiment of the present invention;

<Brief description of symbols for the main parts of the drawings>

10 housing 11 through groove

20: voice coil 30: magnet

31: internal magnet 32: external magnet

40: yoke 41: fixed part

42: step 43: yoke plate

44: protrusion 50,150: diaphragm

51: frame 52: curve

522: cut portion 53: rib

54 fastening hole 55 fastening part

56: slot 60: cover

61: assembly rib 62: contact protrusion

64: front part 65: space part

66: main part 70: casing

71: Boss 72: Tightening Screw

74: slot 80: film

81: hole 100: speaker device

Claims (20)

In the speaker device comprising a magnet and a voice coil is installed inside the housing which is located inside the casing, coupled with the yoke, and a diaphragm is installed outside the yoke. The magnet is divided into an inner magnet and an outer magnet and disposed on both outer surfaces of the yoke and the yoke, respectively, and the diaphragm coupled to the yoke has a longitudinal direction corresponding to the direction of the outer magnet of the yoke. Speaker device characterized in that the rectangular shape. The method of claim 1, The diaphragm is a speaker device, characterized in that the outer frame (51) portion is formed in a rectangular shape, the inside of the frame (51) portion is formed integrally connected to the curved line 52 of an unspecified form. The method of claim 2, Speaker inside, characterized in that the inner bending line 52 of the diaphragm is formed asymmetrically with respect to the middle to induce tremor of the unstable diaphragm to generate a stronger vibration. The method of claim 2, The cutting unit 522 is formed at a selected portion of the inner bending line 52 of the diaphragm to induce shaking of the unstable diaphragm 50, thereby generating a stronger vibration. The method of claim 1, The diaphragm is formed in a rectangular shape, the speaker device, characterized in that one or two or more slots 56 are arranged in the interior thereof. The method of claim 5, wherein The slot 56 of the diaphragm is a symmetrical structure with respect to the middle, but a portion of the shape is formed asymmetrically to induce tremor of the unstable diaphragm, characterized in that a stronger vibration is generated. The method of claim 5, wherein The slot 56 is formed asymmetrically with respect to the middle of the inside of the diaphragm speaker device, characterized in that the stronger vibration is generated by inducing the tremor of the unstable diaphragm. The method of claim 1, Speaker unit, characterized in that the diaphragm made of an oval. The method of claim 1, The yoke has stepped 42 formed on both sides thereof, and the external magnet is installed from the upper end of the stepped 42 to the lower side of the side, and the lower end adjacent to the lower end of the external magnet has projections 44 in the outward direction. Speaker device, characterized in that further formed. In the speaker device comprising a magnet and a voice coil is installed inside the housing which is located inside the casing, coupled with the yoke, and a diaphragm is installed outside the yoke. A speaker device, characterized in that the film is assembled on the outer side of the housing in the state of maintaining a gap with the diaphragm, the outer side of the housing is spaced apart from the film. The method of claim 10, The cover is supported by the housing and at the same time the outer periphery is further extended to the outside to form the assembly rib (61), the speaker device, characterized in that to be assembled to the casing (70). The method of claim 10, The speaker device, characterized in that the contact protrusion 62 is formed at the edge of the cover protruding outwardly connected to the assembly rib. The method of claim 10, Speaker cover, characterized in that the cover is formed with a plurality of through holes (63). The method of claim 10, Speaker device, characterized in that the recess portion (66) is formed in the inner center of the cover. The method of claim 10, Speaker device, characterized in that the cover is made of a silicon material The method of claim 10, A speaker device, characterized in that the film is formed with a plurality of holes (81). The method of claim 10, The diaphragm is a speaker device, characterized in that the outer frame (51) portion is formed in a rectangular shape, the inside of the frame (51) portion is formed integrally connected to the curved line 52 of an unspecified form. The method of claim 10, Speaker inside, characterized in that the inner bending line 52 of the diaphragm is formed asymmetrically with respect to the middle to induce tremor of the unstable diaphragm to generate a stronger vibration. The method of claim 10, The diaphragm is formed in a rectangular shape, the speaker device, characterized in that one or two or more slots 56 are arranged in the interior thereof. The method of claim 10, The slot is formed asymmetrically with respect to the middle of the inside of the diaphragm speaker device, characterized in that a stronger vibration is generated by inducing a tremor of the unstable diaphragm.

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