Novel bone conduction vibrator convenient to position

Abstract

The invention relates to the technical field of bone conduction vibrators, and particularly discloses a novel bone conduction vibrator convenient to position, which comprises a cavity assembly, a rivet, a magnetic circuit assembly and a voice coil assembly, and is characterized in that the cavity assembly comprises a shell and a vibration plate; the voice coil assembly comprises a substrate and a voice coil. The magnetic circuit assembly comprises a yoke, a washer and a permanent magnet, and the permanent magnet is arranged between the yoke and the washer; and a rivet passes through the central holes of the vibration plate and the magnetic circuit assembly to tightly rivet the vibration plate and the magnetic circuit assembly. The vibrating plate, the yoke, the permanent magnet and the washer are all located in the shell; the vibrator cover is located at the upper end of the shell, the substrate is located at the other end of the shell, the upper end of the yoke is fixedly provided with a yoke boss and a concave part, and the upper end of the permanent magnet is fixedly provided with a permanent magnet boss. The assembly concentric precision of the vibrator can be improved, eccentricity is not prone to occurring, a spacer between the magnetic circuit assembly and the vibration plate is omitted, the soldering technology of the voice coil is improved, welding is easy, and the bonding pad is firm, reliable and not prone to falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of bone conduction vibrators, and in particular to a novel bone conduction vibrator that is easy to position. Background Art

[0002] Bone conduction vibrators are a unique audio transmission device that uses the principle of bone conduction to convert sound signals into mechanical vibrations, which are transmitted directly to the inner ear through the skull without passing through the eardrum, the external auditory canal and the middle ear. This design allows users to keep their ears open while wearing headphones, allowing them to hear sounds from the outside world, improving safety and convenience. Bone conduction vibrators are widely used in sports headphones, hearing aids and other fields, bringing users a more comfortable and healthy listening experience. At the same time, its unique transmission method also avoids the ear discomfort and hearing damage that may be caused by wearing traditional headphones for a long time.

[0003] The existing technology still has the following areas for improvement: In the existing bone conduction speakers, the rivets are made of plastic material, which is easy to deform during the riveting process and its low expansion coefficient is easily affected by temperature and humidity to loosen, which is easy to produce noise when the vibrator vibrates. Because the rivets are made of plastic material, the partition and nail rod between the vibration plate and the yoke iron are easy to deform and move eccentrically during the welding process, resulting in jamming, which makes the vibrator unusable; the voice coil substrate is also made of plastic material, and the welding pad adopts the tin spraying process with poor adhesion. The two leads of the voice coil are spot welded on the tin spraying surface. Because its plastic material is not resistant to high temperature, the pad is not firm, which makes it easy to fall off and scrap, and many other problems. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a new bone conduction vibrator which is easy to position, can improve the assembly accuracy of the vibrator, is not easy to be eccentric, saves the spacer between the magnetic circuit assembly and the vibration plate, and improves the soldering process of the voice coil to facilitate soldering and the soldering pad is not easy to fall off.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A novel bone conduction vibrator that is easy to position, comprising a cavity assembly, a rivet, a magnetic circuit assembly and a voice coil assembly, wherein the cavity assembly comprises a housing and a vibration plate, the voice coil assembly comprises a substrate and a voice coil, and the magnetic circuit assembly comprises a yoke, a washer and a permanent magnet;

[0007] The yoke is located at the upper end of the permanent magnet, the outer side of the rivet is sleeved with the vibration plate, the yoke, the permanent magnet and the washer, and the vibration plate, the yoke, the permanent magnet and the rivet are all located inside the shell;

[0008] The substrate is located at one end of the shell, and the substrate is located below the permanent magnet. The washer is fixedly connected to the lower end of the permanent magnet. The upper end of the yoke is fixedly provided with a yoke boss, and the upper end of the permanent magnet is fixedly provided with a permanent magnet boss. The yoke boss and the permanent magnet boss cooperate with each other.

[0009] Furthermore, the yoke and the yoke boss are an integrated structure, and the permanent magnet and the permanent magnet boss are an integrated structure.

[0010] Furthermore, a first placement groove is provided at one end of the shell away from the substrate, a vibrator cover base is fixedly provided at the lower end of the vibrator cover, the vibrator cover base is detachably provided in the first placement groove, a second placement groove is provided at one end of the shell close to the substrate, the substrate is detachably connected to the second placement groove, the shell and the vibrator cover are tightly closed, and the shell and the substrate are tightly closed.

[0011] Furthermore, the vibration plate is concentrically embedded in the interior of the shell by integral injection molding, the vibration plate is located between the vibrator cover and the yoke, and the yoke is sleeved on the outside of the rivet.

[0012] Furthermore, the rivet is made of metal.

[0013] Furthermore, a plurality of longitudinal grooves are formed on the outer side of the shell, and the plurality of longitudinal grooves are parallel to each other.

[0014] Furthermore, the voice coil is fixedly connected to the inner side of the substrate, and the voice coil is located between the permanent magnet and the yoke.

[0015] Furthermore, the substrate is in a circular ring shape, and a positive electrode connection point and a negative electrode connection point are arranged on the outer side of the substrate.

[0016] Furthermore, two ends of the voice coil are connected to the positive connection point and the negative connection point respectively, the voice coil and the positive connection point are connected by solder, and the voice coil and the negative connection point are connected by solder.

[0017] Furthermore, a positioning groove is respectively provided on both sides of the substrate, and a wire passing groove is provided on the upper end of the substrate.

[0018] The beneficial effects of the present invention are:

[0019] (1) By setting a yoke and a permanent magnet, the technical effect that can be achieved is that a yoke boss is fixedly set on the upper end of the yoke, and a permanent magnet boss is fixedly set on the upper end of the permanent magnet. The yoke boss and the permanent magnet boss are matched with each other. The yoke and the yoke boss are an integrated structure, and the permanent magnet and the permanent magnet boss are an integrated structure. The yoke boss and the permanent magnet boss cooperate with each other to improve the assembly concentricity of the vibrator, facilitate positioning and assembly, and are not easy to be eccentric during vibration. There is no need to add a partition, thereby reducing the mold cost of the plastic rivet.

[0020] (2) By setting up the shell, the technical effect that can be achieved is that a plurality of longitudinal grooves are opened on the outer side of the shell, and the plurality of longitudinal grooves are parallel to each other. The longitudinal grooves on the shell facilitate the assembly of the vibrator and the earphone, reduce the overall mass of the vibrator, and lighten the weight of the vibrator.

[0021] (3) By setting the rivets, the technical effect that can be achieved is that the rivets are made of metal. The rivets made of metal are not easy to generate noise when the vibrator vibrates, thereby improving the sound quality purity of the speaker, ensuring the stability and consistency of the sound output, and are not easy to deform, thereby avoiding damage to the vibrator.

[0022] (4) By setting the positive connection point and the negative connection point, the technical effect that can be achieved is that the substrate is made of a mature and high-temperature resistant material in a circular shape, and the lead wires at both ends of the voice coil are respectively led out by setting lead grooves on both sides, and are respectively welded to the positive connection point and the negative connection point and are covered with protective glue, so that the welding point is firm and reliable, and the mechanical stability is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 is a three-dimensional cross-sectional view of the present invention;

[0025] Figure 2 An exploded view of the present invention;

[0026] Figure 3 is a front view of the substrate in the present invention;

[0027] Description of reference numerals:

[0028] In the figure: 1, housing; 2, rivets; 3, vibrator cover; 4, yoke; 5, substrate; 6, permanent magnet; 7, washer;

[0029] 11. First placement groove; 12. Second placement groove; 13. Vibration plate; 31. Vibrator cover base; 41. Yoke boss; 51. Voice coil; 52. Negative pole connection point; 53. Positive pole connection point; 54. Positioning groove; 55. Wire groove; 61. Permanent magnet boss. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Reference Figures 1 to 3 , a new type of bone conduction vibrator that is easy to position disclosed in the present invention, includes a cavity assembly, a rivet 2, a magnetic circuit assembly and a voice coil assembly, the cavity assembly includes a housing 1 and a vibration plate 13, the voice coil assembly includes a substrate 5 and a voice coil 51, and the magnetic circuit assembly includes a yoke 4, a washer 7 and a permanent magnet 6.

[0034] The yoke 4 is located at the upper end of the permanent magnet 6 , and the outer side of the rivet 2 is sleeved with a vibration plate 13 , the yoke 4 , the permanent magnet 6 and the washer 7 . The vibration plate 13 , the yoke 4 , the permanent magnet 6 and the rivet 2 are all located inside the housing 1 .

[0035] The substrate 5 is located at one end of the shell 1, and the substrate 5 is located below the permanent magnet 6. The lower end of the permanent magnet 6 is fixedly connected to a washer 7. The upper end of the yoke 4 is fixedly provided with a yoke boss 41, and the upper end of the permanent magnet 6 is fixedly provided with a permanent magnet boss 61. The yoke boss 41 and the permanent magnet boss 61 match each other.

[0036] The yoke 4 and the yoke boss 41 are an integrated structure, and the permanent magnet 6 and the permanent magnet boss 61 are an integrated structure. The yoke boss 41 and the permanent magnet boss 61 cooperate to improve the assembly accuracy of the vibrator, facilitate positioning and assembly, and are not easy to be eccentric during vibration, without adding a partition, reducing production costs, and preventing the rivet 2 from affecting the vibration of the permanent magnet 6.

[0037] A first placement groove 11 is provided at the end of the shell 1 away from the substrate 5, a vibrator cover base 31 is fixedly provided at the lower end of the vibrator cover 3, the vibrator cover base 31 is detachably provided in the first placement groove 11, a second placement groove 12 is provided at the end of the shell 1 close to the substrate 5, the substrate 5 is detachably connected in the second placement groove 12, the shell 1 and the vibrator cover 3 are tightly closed, the shell 1 and the vibrator cover 3 are welded by high-frequency ultrasonic equipment, and the shell 1 and the substrate 5 are tightly closed.

[0038] A vibration plate 13 is concentrically embedded in the housing 1 and is integrally injection-molded. The vibration plate 13 is located between the vibrator cover 3 and the yoke 4 . The yoke 4 is sleeved on the outside of the rivet 2 .

[0039] The rivet 2 is made of metal. The rivet 2 made of metal is not easy to generate noise when the vibrator vibrates, which improves the sound quality purity of the speaker, ensures the stability and consistency of the sound output, and is not easily deformed by the temperature and humidity environment, avoiding the loosening of the vibrator and the generation of noise.

[0040] A plurality of longitudinal grooves are provided on the outer side of the housing 1, and the plurality of longitudinal grooves are parallel to each other. The longitudinal grooves on the housing 1 are helpful for assembling the vibrator and the earphone, reducing the overall mass of the vibrator and lightening the weight of the vibrator.

[0041] A voice coil 51 is fixedly disposed on the inner side of the substrate 5 , and the voice coil 51 is located between the permanent magnet 6 and the yoke 4 .

[0042] The substrate 5 is in a circular ring shape, and a positive electrode connection point 53 and a negative electrode connection point 52 are arranged on the outer side of the substrate 5 .

[0043] Two ends of the voice coil 51 are connected to the positive connection point 53 and the negative connection point 52 respectively. The voice coil 51 and the positive connection point 53 are connected by solder, and the voice coil 51 and the negative connection point 52 are connected by solder.

[0044] The solder points between the two ends of the voice coil 51 and the positive connection point 53 and the negative connection point 52 are smaller, which reduces the soldering area, saves soldering materials, does not affect the thermal conductivity of the vibrator, and while maintaining a compact structure, also enhances the mechanical stability of the vibrator and reduces the risk of loosening or failure due to vibration.

[0045] A positioning groove 54 is respectively formed on both sides of the substrate 5 , and a wire passing groove 55 is formed on the upper end of the substrate 5 . The positioning groove 54 is used to position the two ends of the voice coil 51 .

[0046] The working principle and use process of the present invention are as follows: first, the vibration plate 13 is concentrically placed inside the shell 1 and integrally injection molded; the nail rod of the rivet 2 passes through the center holes of the vibration plate 13, the yoke 4, the permanent magnet 6 and the washer 7 in turn and is tightly riveted into a whole by mechanical means; the leads at both ends of the voice coil 51 are respectively welded to the positive connection point 53 and the negative connection point 52 by a soldering process, the voice coil 51 is fixed between the permanent magnet 6 and the yoke 4, the substrate 5 is fixed on the second placement groove 12, and the vibrator cover 3 is fixed on the first placement groove 11 to avoid the risk of failure.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A new bone conduction vibrator that is easy to position, characterized by: It comprises a cavity assembly, a rivet (2), a magnetic circuit assembly and a voice coil assembly, wherein the cavity assembly comprises a housing (1) and a vibration plate (13), the voice coil assembly comprises a substrate (5) and a voice coil (51), and the magnetic circuit assembly comprises a yoke (4), a washer (7) and a permanent magnet (6); The yoke (4) is located at the upper end of the permanent magnet (6); the outer side of the rivet (2) is provided with the vibration plate (13), the yoke (4), the permanent magnet (6) and the washer (7); the vibration plate (13), the yoke (4), the permanent magnet (6) and the rivet (2) are all located inside the housing (1); The substrate (5) is located at one end of the housing (1), and the substrate (5) is located below the permanent magnet (6). The lower end of the permanent magnet (6) is fixedly connected to the washer (7). The upper end of the yoke (4) is fixedly provided with a yoke boss (41), and the upper end of the permanent magnet (6) is fixedly provided with a permanent magnet boss (61). The yoke boss (41) and the permanent magnet boss (61) cooperate with each other.

2. A novel bone conduction vibrator that is easy to locate according to claim 1, characterized in that: The yoke (4) and the yoke boss (41) are an integrated structure, and the permanent magnet (6) and the permanent magnet boss (61) are an integrated structure.

3. A novel bone conduction vibrator that is easy to locate according to claim 1, characterized in that: A first placement groove (11) is provided at one end of the shell (1) away from the substrate (5); a vibrator cover base (31) is fixedly provided at the lower end of the vibrator cover (3); the vibrator cover base (31) is detachably provided in the first placement groove (11); a second placement groove (12) is provided at one end of the shell (1) close to the substrate (5); the substrate (5) is detachably connected in the second placement groove (12); the shell (1) and the vibrator cover (3) are tightly closed, and the shell (1) and the substrate (5) are tightly closed.

4. The novel bone conduction vibrator that is easy to locate according to claim 1, characterized in that: The vibration plate (13) is concentrically embedded in the interior of the housing (1) and is integrally injection-molded. The vibration plate (13) is located between the vibrator cover (3) and the yoke (4). The yoke (4) is sleeved on the outside of the rivet (2).

5. The novel bone conduction vibrator that is easy to locate according to claim 1, characterized in that: The rivet (2) is made of metal.

6. The novel bone conduction vibrator that is easy to locate according to claim 1, characterized in that: The outer side of the shell (1) is provided with a plurality of longitudinal grooves, and the plurality of longitudinal grooves are parallel to each other.

7. The novel bone conduction vibrator that is easy to locate according to claim 1, characterized in that: The voice coil (51) is fixedly connected to the inner side of the substrate (5), and the voice coil (51) is located between the permanent magnet (6) and the yoke (4).

8. The novel bone conduction vibrator that is easy to locate according to claim 7, characterized in that: The substrate (5) is in the shape of a ring, and a positive electrode connection point (53) and a negative electrode connection point (52) are arranged on the outer side of the substrate (5).

9. The novel bone conduction vibrator that is easy to locate according to claim 8, characterized in that: The two ends of the voice coil (51) are respectively connected to the positive connection point (53) and the negative connection point (52); the voice coil (51) and the positive connection point (53) are connected by solder, and the voice coil (51) and the negative connection point (52) are connected by solder.

10. The novel bone conduction vibrator that is easy to locate according to claim 9, characterized in that: A positioning groove (54) is respectively provided on both sides of the base plate (5), and a wire passing groove (55) is provided on the upper end of the base plate (5).

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