CN102014328A - Bone Conduction Headphones - Google Patents

Abstract

The utility model provides a bone conduction earphone, includes upper cover (1) and lower cover (2), after upper cover (1) and lower cover (2) lock, form cavity (4) that are used for holding bone conduction speaker subassembly (3) be equipped with bone conduction speaker subassembly (3) in cavity (4), lower cover (2) are injection moulding once, lower cover (2) have a vibration plane (21), bone conduction speaker subassembly (3) are including magnet (31), coil (32) and buffering ring (33), magnet (31) fastening is in on inner wall (211) of vibration plane (21) of lower cover (2) the cover has buffering ring (33) on magnet (31) be equipped with on buffering ring (33) coil (32). The invention has the advantages of almost no noise, rich bass, simple structure and low cost.

Description

Bone Conduction Headphones

technical field

The invention relates to a bone conduction earphone, in particular to a bone conduction earphone with small noise, rich bass and high volume.

Background technique

The traditional earphones are generally attached to or plugged in the ear holes. The earphones vibrate the air, and the air vibrates the eardrum of the person to transmit the sound to the human brain. This earplug type earphone, owing to need earphone to be attached to ear hole or be plugged in ear hole when using, like this, when people are listening to the sound in the earphone, the sound user of the outside world is difficult to hear, like this, when When encountering a dangerous situation, such as crossing the road, you can’t hear the whistle of the car, which is quite dangerous; in addition, if you use this kind of earphone at a high volume for a long time, it will affect the human eardrum and cause tinnitus , can seriously cause hearing loss. In order to solve the above problems, people have invented a bone conduction earphone, which converts the electrical signal into a vibration signal, and makes people hear the sound through contact with the ossicles of the human body. The sound does not need to be transmitted through the air. Therefore, the earphone There is no need to attach or plug in the ear holes, so that when people use bone conduction earphones to listen to sound, it will not affect the hearing function of the human ear, and at the same time, it will not have any impact on the human eardrum. A bone conduction earphone disclosed in Korean patent document KR10-2010-0097869 is exactly such a product, and it includes an upper cover (that is, a cover attached to the ossicle) and a lower cover, and the upper cover and the lower cover A bone conduction speaker assembly is provided in the formed cavity, and the upper cover is composed of two parts, a main body of the upper cover and a metal shrapnel, and the metal shrapnel is fixed together by screws. The bone conduction speaker assembly includes a magnet, a coil , a three-claw elastic member, the magnet is fixedly connected to the lower cover, the coil is sleeved on the magnet, and a three-claw elastic member is arranged above the skeleton of the coil, and the top end of the three-claw elastic member rests on On the metal shrapnel of the upper cover. When the coil is energized, as the strength of the electrical signal changes, the coil vibrates under the action of the magnetic field, thereby driving the vibration of the three-claw elastic member, and the top of the three-claw elastic member vibrates the metal shrapnel , so that the human ossicles can hear the sound. Although this kind of bone conduction earphone solves some problems of the earplug earphone, due to the limitations of the structure of the bone conduction earphone itself, when the volume of this earphone is slightly louder, it will be on the top of the three-claw elastic part. between the metal shrapnel, or between the metal shrapnel and the upper cover body, which affects the purity of the sound; in addition, the bass of this bone conduction earphone is not good, making people sound uncomfortable, especially when listening to music , the distortion is very severe.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages and provide the society with a bone conduction earphone with almost no noise, rich bass and simple structure.

The technical solution of the present invention is to provide a bone conduction earphone, including an upper cover and a lower cover (that is, the cover part attached to the ossicle), and after the upper cover and the lower cover are fastened together, a bone conduction speaker is formed. The cavity of the assembly, the bone conduction speaker assembly is arranged in the cavity, the lower cover is injection molded at one time, the lower cover has a vibration plane, and the bone conduction speaker assembly includes a magnet, a coil and a buffer ring , the magnet is fastened on the inner wall of the vibration plane of the lower cover, a buffer ring is sleeved on the magnet, and the coil is arranged on the buffer ring.

As an improvement to the present invention, a metal shrapnel is also provided between the inner wall of the vibrating plane of the lower cover and the magnet, the metal shrapnel is fixed on the inner wall of the vibrating plane, and the magnet is fastened to the on the metal shrapnel.

As a further improvement to the present invention, the buffer ring is made of sponge; or made of silica gel; or made of EVA material; or made of rubber.

As a further improvement to the present invention, the magnet can be square or cylindrical;

Preferably, the longitudinal section of the magnet may also be T-shaped, and the plane of the T-shaped magnet is directly fixed on the inner wall of the vibration plane instead of the metal shrapnel.

Preferably, the longitudinal section of the magnet can also be E-shaped, and the plane of the E-shaped magnet is directly fixed on the inner wall of the vibration plane instead of the metal shrapnel.

In the various solutions above, iron cores may also be provided on the magnets to enhance the magnetic field conduction of the magnets. The iron core can also be cylindrical, square column, T-shaped or E-shaped.

The present invention changes the cover part of the existing bone conduction earphone that is attached to the ear bone from the traditional two parts (metal shrapnel and the cover body) to one-time injection molding, and transfers the sound from the traditional coil through the three claws The structure of the elastic part on the metal shrapnel is changed to a structure in which the magnet or the magnet plus the metal shrapnel is directly fixedly connected to the inner wall of the vibration plane of the lower cover, thus eliminating the root cause of the noise and fundamentally solving the noise problem; secondly One side of the buffer ring is directly connected to the vibration plane of the lower cover or the top of the metal shrapnel, and the other side is fixedly connected to the bottom of the coil, so that when the coil vibrates, the buffer ring can directly buffer the vibration of the coil, so , which can enrich the bass components of the headphones. Compared with the traditional bone conduction earphone, the invention has fewer parts and has the advantages of simple structure and low cost. In summary, the present invention has the advantages of almost no noise, rich bass, simple structure and low cost.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional structure diagram of FIG. 1 .

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

FIG. 4 is a schematic cross-sectional structure diagram of FIG. 3 .

Fig. 5 is a schematic diagram of the longitudinal sectional structure of the T-shaped magnet in the present invention.

Fig. 6 is a schematic diagram of the longitudinal sectional structure of the E-type magnet in the present invention.

Detailed ways

Example 1

Please refer to Fig. 1 and Fig. 2, what Fig. 1 and Fig. 2 reveal is a kind of bone conduction earphone, comprises upper cover 1 and lower cover 2 (that is, the cover part attached to the ossicle), and the upper cover 1 and lower cover 2 After fastening, a cavity 4 for accommodating the bone conduction speaker assembly 3 is formed, and the bone conduction speaker assembly 3 is arranged in the cavity 4. The feature of the present invention is that the lower cover 2 is one-time injection molding , the lower cover 2 has a vibration plane 21. The traditional cover is composed of two parts into an integral structure, which can eradicate the noise caused by the weak bonding between the two parts. The vibration in this embodiment The plane 21 is a circular surface, and the bone conduction speaker assembly 3 includes a magnet 31, a coil 32 and a buffer ring 33, and the magnet 31 is fastened on the inner wall 211 of the vibration plane 21 of the lower cover 2, and the magnet 31 and the vibration There will be no noise between the planes 21; a buffer ring 33 is set on the magnet 31, and the lower bottom surface 331 of the buffer ring 33 is fixedly connected with the vibration plane 21, and the upper bottom surface 332 of the buffer ring 33 is connected to the The lower bottom surface 321 of the coil 32 is fixedly connected, and the coil 32 is arranged on the buffer ring 33. The buffer ring 33 can effectively suppress the treble, enrich the bass, and improve the sound quality of the earphone. Change the traditional structure of connecting the upper cover and the lower cover with screws, in order to tightly fit the upper cover 1 and the lower cover 2 through the column head 11 connected with the upper cover 1 and the column hole 22 connected with the lower cover 2 Connection, like this, also can avoid the problem that upper cover 1 and lower cover 2 loosen and produce noise.

Example 2

Please refer to Fig. 3 and Fig. 4, what Fig. 3 and Fig. 4 reveal is the second embodiment of the present invention, the embodiment shown in Fig. 3 and Fig. 4 is compared with the embodiment shown in Fig. 1 and Fig. 2, its The general structure is the same, the difference is that: between the inner wall 211 of the vibrating plane 21 of the lower cover 2 and the magnet 31, there is also a metal elastic piece 34, and the metal elastic piece 34 is fixed on the inner wall of the vibrating plane 21 211, the magnet 31 is fastened on the metal elastic piece 34, such a design can also improve the vibration effect of the present invention.

In the above two embodiments, the buffer ring 33 is made of sponge, which is a sponge ring. Obviously, the buffer ring 33 can also be made of silica gel; or made of EVA material; or made of rubber, etc. Made of cushioning material.

In the above two embodiments, the magnet 31 is a cylindrical magnet; obviously, the magnet 31 may also be a square column magnet. The magnet 31 can also be designed as a T-shaped longitudinal section (see FIG. 5 ), and the plane 311 of the T-shaped magnet replaces the metal shrapnel 34 and is directly fixed on the inner wall 211 of the vibration plane 21 .

Similarly, the magnet 31 can also be designed as an E-shaped longitudinal section, and the plane 312 of the E-shaped magnet replaces the metal shrapnel 34 and is directly fixed on the inner wall 211 of the vibration plane 21 (see FIG. 6 ).

In the various solutions above, an iron core (not shown) may also be provided on the magnet 31 to enhance the magnetic field conduction of the magnet 31 . Obviously, the iron core can also be designed in a cylindrical, square column, T-shaped or E-shaped structure.

Claims (10)

1. A bone conduction earphone, comprising an upper cover (1) and a lower cover (2), after the upper cover (1) and the lower cover (2) are snapped together, a cavity for accommodating the bone conduction speaker assembly (3) is formed A cavity (4), in which a bone conduction speaker assembly (3) is arranged, is characterized in that: the lower cover (2) is injection molded at one time, and the lower cover (2) has A vibration plane (21), the bone conduction loudspeaker assembly (3) includes a magnet (31), a coil (32) and a buffer ring (33), and the magnet (31) is fastened to the lower cover (2) On the inner wall (211) of the vibration plane (21), a buffer ring (33) is sleeved on the magnet (31), and the coil (32) is arranged on the buffer ring (33). 2. The bone conduction earphone according to claim 1, characterized in that: a metal shrapnel is also provided between the inner wall (211) of the vibration plane (21) of the lower cover (2) and the magnet (31) (34), the metal shrapnel (34) is fixed on the inner wall (211) of the vibration plane (21), and the magnet (31) is fastened on the metal shrapnel (34). 3. The bone conduction earphone according to claim 1 or 2, characterized in that: the buffer ring (33) is made of sponge. 4. The bone conduction earphone according to claim 1 or 2, characterized in that: the buffer ring (33) is made of silica gel. 5. The bone conduction earphone according to claim 1 or 2, characterized in that: the buffer ring (33) is made of EVA material or rubber. 6. The bone conduction earphone according to claim 1 or 2, characterized in that: the upper cover (1) and the lower cover (2) are connected to the lower cover (2) through the column head (11) connected with the upper cover Connected column holes (22) are tightly fitted and connected. 7. The bone conduction earphone according to claim 1 or 2, characterized in that: the magnet (31) is square or cylindrical. 8. The bone conduction earphone according to claim 1, characterized in that: the longitudinal section of the magnet (31) is T-shaped, and the plane of the T-shaped magnet replaces the metal shrapnel (34) and is directly fixed on the vibration plane (21 ) on the inner wall (211). 9. The bone conduction earphone according to claim 1, characterized in that: the longitudinal section of the magnet (31) is E-shaped, and the plane of the E-shaped magnet replaces the metal shrapnel (34) and is directly fixed on the vibration plane (21 ) on the inner wall (211). 10. The bone conduction earphone according to claim 1, 8 or 9, characterized in that: an iron core is also provided on the magnet (31).

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