CN115065916A

CN115065916A - Bone conduction loudspeaker

Info

Publication number: CN115065916A
Application number: CN202210879572.6A
Authority: CN
Inventors: 王宝庆
Original assignee: Shenzhen Shengxingwang Precision Technology Co ltd
Current assignee: Shenzhen Shengxingwang Precision Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-09-16

Abstract

The invention relates to the technical field of speakers, and discloses a bone conduction speaker which comprises a support front shell, a support rear shell, an elastic sheet arranged on the support front shell, a U-shaped iron fixed on an inner ring of the elastic sheet, a main magnet fixed in an inner cavity of the U-shaped iron, a washer fixed at the free end of the main magnet, a U-shaped ring arranged on the support rear shell, a voice coil fixed on the periphery of the U-shaped ring and a PCBA (printed circuit board assembly), wherein the voice coil is positioned at the upper end of the periphery of the U-shaped ring, the PCBA is positioned at the lower end of the periphery of the U-shaped ring, and the voice coil is electrically connected with the PCBA. The invention aims to provide a bone conduction loudspeaker which can be used as a bone conduction vibrator and can also be directly used as a bone conduction earphone, has a simple and compact structure, is easy to install and produce, and improves the production efficiency and the user experience.

Description

Bone conduction loudspeaker

Technical Field

The invention relates to the technical field of speakers, in particular to a bone conduction speaker.

Background

Sound waves are generated by object vibrations, which the cochlea transduces into nerve impulses that are transmitted to the neural centers of the brain, thus generating the sense of hearing. The cochlea mainly has two paths of vibration, one is an air conduction path; the other is a bone conduction path, and a sound source directly vibrates the skull and then is transmitted to the auditory nerve and auditory center through the cochlea to realize the signal reception.

The bone conduction speaker saves many steps of sound wave transmission, can realize clear sound restoration in noisy environment, and the sound wave can not influence other people because of diffusion in the air yet in addition, reduces the sound and reveals the protection user privacy.

The existing bone conduction loudspeaker is large in size and weight, and the bone conduction earphone product is relatively difficult to assemble. Moreover, the existing bone conduction loudspeaker has more accessories, the lead of the voice coil is easily cut off by PCBA or the edge of the base support from the edge of the coil, so that the bone conduction loudspeaker is damaged, the assembly process is complicated, the production efficiency is influenced, and the consistency of the vibration part is poor.

Meanwhile, the existing bone conduction speaker is basically designed independently, and the design of the appearance and the internal structure of the bone conduction earphone is completed by matching the ID structure with the structural size of the existing bone conduction speaker. This affects product size and increases the limitations of ID design.

Therefore, there is a need for a bone conduction speaker or a bone conduction earphone to solve the above problems in use and production, and ensure the high efficiency of production efficiency and the user experience.

Disclosure of Invention

The present invention is directed to solve the above problems, and an object of the present invention is to provide a bone conduction speaker, which can be used as a bone conduction vibrator or directly used as a bone conduction earphone, and has a simple and compact structure, is easy to install and produce, and improves production efficiency and user experience.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a bone conduction speaker, includes support protecgulum and support backshell, installs shell fragment on the support protecgulum, fixes at the shell fragment inner circle U iron, fixes at the main magnet of U iron inner chamber, fixes at the china department of main magnet free end, sets up U type circle on the support backshell, fixes at U type circle outlying voice coil loudspeaker voice coil and PCBA, the voice coil loudspeaker voice coil is located U type circle outlying upper end, PCBA is located U type circle outlying lower extreme, the voice coil loudspeaker voice coil is connected with PCBA electricity.

As an improvement, the other end of the washer is fixed with an auxiliary magnet.

As an improvement, a flange is arranged at a position, close to the edge, of the support rear shell, and the support rear shell is clamped into the support front shell through the flange to be fixedly connected with the support front shell.

As an improvement, the outer edge of the elastic sheet is fixed at the interface of the front shell and the rear shell of the support, a plastic ring is installed on the periphery of the U-shaped iron, and the inner edge of the elastic sheet is fixed on the plastic ring.

As an improvement on the plastic ring, one end of the plastic ring is flush with the open end of the U-shaped iron.

As another improvement to the plastic ring, the plastic ring is located in the middle section of the periphery of the U-shaped iron.

As an improvement, a boss is arranged on the back of the U-shaped iron, the inner ring of the elastic sheet is fixed on the boss, and the outer ring of the elastic sheet is fixed on the inner wall of the front shell of the bracket.

By combining the technical scheme, compared with the prior art, the invention has the beneficial effects that: the design of bone conduction speaker is fused into ID outward appearance design, regard ID outward appearance support front shell and the support backshell of product as the shell support of bone conduction speaker, its inside shell fragment, main magnet, vice magnet, U iron, china department, voice coil loudspeaker voice coil and PCBA etc. arrange the inside of the exterior structure that support front shell and support backshell are constituteed in, the design of product ID has both been guaranteed, can reduce the loss in production to the minimum again, its overall structure is simple, compact, the installation degree of difficulty when having reduced earphone production, installation effectiveness and quality have been promoted, and can avoid the lead wire of voice coil loudspeaker voice coil to receive PCBA or other spare part edge cutting to lead to damaging, the life of bone conduction speaker has been prolonged. Further, since the design of the bone conduction speaker is integrated with the ID design, the bone conduction speaker can be used as a bone conduction transducer or as a bone conduction earphone as it is.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a bone conduction speaker according to the present invention.

Fig. 2 is a cross-sectional view of a first embodiment of a bone conduction speaker according to the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of a bone conduction speaker according to the present invention.

Fig. 4 is a cross-sectional view of a second embodiment of a bone conduction speaker according to the present invention.

Fig. 5 is a schematic structural diagram of a bone conduction speaker according to a third embodiment of the present invention.

Fig. 6 is a cross-sectional view of a third embodiment of a bone conduction speaker according to the present invention.

Fig. 7 is a schematic diagram of a bone conduction speaker according to the present invention coupled to the concha cavity of a human ear after being worn as an earphone.

Wherein: 1-bracket front shell, 2-U iron, 21-boss, 3-plastic ring, 4-elastic sheet, 5-voice coil, 6-main magnet, 7-washer, 8-auxiliary magnet, 9-PCBA, 10-bracket rear shell, 11-U-shaped ring, 12-flange and 13-human ear.

Detailed Description

To explain technical features of the present invention and objects and effects achieved by the present invention in detail, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. used herein indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, a bone conduction speaker includes a bracket front shell 1 and a bracket rear shell 10, a spring plate 4 mounted on the bracket front shell 1, a U-shaped iron 2 fixed on an inner ring of the spring plate 4, a main magnet 6 fixed in an inner cavity of the U-shaped iron 2, a washer 7 fixed at a free end of the main magnet 6, a U-shaped ring 11 disposed on the bracket rear shell 10, a voice coil 5 fixed on the periphery of the U-shaped ring 11, and a PCBA9, wherein the voice coil 5 is located at an upper end of the periphery of the U-shaped ring 11, the PCBA9 is located at a lower end of the periphery of the U-shaped ring 11, and the voice coil 5 is electrically connected with the PCBA 9.

In the above embodiment, the internal structural components PCBA9, voice coil 5, main magnet 6, washer 7, U-iron 2, and spring plate 4 of the bone conduction speaker are all located in the shell structures of the support front shell 1 and the support rear shell 10, the lead of the voice coil 5 is directly pull-down welded on the tin point of the PCBA9, during the use, the voice coil and the PCBA9 are kept relatively still, so as to avoid the risk that the lead of the voice coil 5 is cut by the edge of the PCBA9 or other parts, during the work, the PCBA9 converts the input audio signal into the current signal and then enters the voice coil 5, the magnetic field generated when the current passes through the voice coil 5 and the magnetic field of the main magnet 6 generate interaction force, so that the main magnet 6 drives the U-iron 2 and the washer 7 to perform axial motion, so that the spring plate 4 vibrates and conducts to the object released from the support front shell 1, because the support front shell 1 and the support rear shell 10 can be directly designed by the ID structures of the product, therefore, the bone conduction speaker can be used as a bone conduction vibrator, and can also be directly used as a bone conduction earphone.

Preferably, the other end of the washer 7 is fixed with a secondary magnet 8. The auxiliary magnet 8 may form a homopolar dual-magnet circuit with the main magnet 6, or may form a reverse dual-magnet circuit with the main magnet 6. When the auxiliary magnet 8 and the main magnet 6 form a homopolar double-magnet circuit, the connecting ends of the auxiliary magnet 8, the main magnet 6 and the washer 7 are the same magnetic poles, so that the magnetic flux in the gap can be enhanced, the sensitivity of the bone conduction loudspeaker can be positively adjusted, the vibration sense can be improved, the quality of a vibration system can be improved, and F0 can be reduced; when the auxiliary magnet 8 and the main magnet 6 form a reverse-pole double-magnet circuit, the connecting ends of the auxiliary magnet 8, the main magnet 6 and the washer 7 are opposite magnetic poles, so that the magnetic flux in the gap can be weakened, the sensitivity of the bone conduction loudspeaker can be reversely adjusted, the vibration sense is reduced, the quality of a vibration system is improved, and F0 is reduced.

Preferably, shell 1 and support backshell 10 kneck before the support are fixed to the outward flange of shell fragment 4, conveniently installs the location to shell fragment 4 outward flange, plastic ring 3 is installed to U2's periphery, the inward flange of shell fragment 4 is fixed on plastic ring 3, can conveniently install the location to shell fragment 4 inward flange, and the convenient mounted position to shell fragment 4 adjusts simultaneously, and in actual production, the bottom or the middle part of magnetic circuit part can be adjusted to shell fragment 4's position, has improved the flexibility ratio of production.

Example 2

Referring to fig. 3-4, the embodiment is different from embodiment 1 in that a flange 12 is disposed at a position close to an edge of the bracket rear shell 10, and the bracket rear shell 10 is snapped into the bracket front shell 1 through the flange 12 to achieve a fixed connection with the bracket front shell 1.

In the above embodiment, the bracket rear shell 10 is clamped into the bracket front shell 1 through the flange 12 to complete the installation and fixation with the bracket front shell 1, so that the installation process is convenient and fast, and the positioning accuracy is ensured.

Example 3

Referring to fig. 5-6, the difference between this embodiment and

embodiments

1 and 2 is that a boss 21 is provided on the back of the U-shaped iron 2, the inner ring of the spring plate 4 is fixed on the boss 21, and the outer ring of the spring plate 4 is fixed on the inner wall of the front shell 1 of the bracket.

In the above embodiment, the elastic sheet 4 is fixed on the boss 21 on the back of the U-shaped iron 2, the position of the elastic sheet can be adjusted to the top of the magnetic circuit part, and the elastic sheet is directly installed and fixed by using the boss 21 on the back of the U-shaped iron 2, so that a plastic ring is omitted, the structure is simpler, and the installation is more convenient.

Fig. 7 is a schematic view of the bone conduction speaker provided in the above embodiment as an earphone, which is coupled with the cavum concha of the human ear after being worn, and when worn, the bone conduction speaker is only required to be placed in the cavum concha of the human ear 13.

The bone conduction loudspeaker provided by the embodiment adopts a simple electromagnetic loudspeaker principle, the ID structural design is directly integrated into the shell design of the loudspeaker, the bone conduction loudspeaker can be used as a bone conduction vibrator and can also be directly worn outside, and a person can feel sound signals in a bone conduction mode. When the bone conduction vibrator is used as a bone conduction vibrator, compared with the traditional bone conduction loudspeaker, the PCBA9 and the voice coil 5 lead wire are arranged in the loudspeaker, so that the production yield is improved, the service life is prolonged, the structure is simple, the assembly process is simple, the bone conduction vibrator can be directly used as an earphone, and the production steps of the earphone are reduced; when being used as the bone conduction earphone, can practice thrift the product development time, shorten the product development cycle, can improve production efficiency, need not consider again a great deal of technological problems such as traditional bone conduction earphone assembly bone conduction speaker, when wearing, place this bone conduction speaker in the concha intracavity, can obtain better listening effect, drive skull, cochlea better, arouse auditory nerve's feedback, and have better comfort level of wearing, compare with traditional bone conduction earphone, need not consider the influence that the angle difference when wearing caused.

The present invention and its embodiments have been described in detail, but the description is not limited thereto, and the embodiments shown in the drawings are only a part of the embodiments of the present invention, and the actual structure is not limited thereto. Those skilled in the art will appreciate that various modifications, adaptations, and alternatives can be made without departing from the spirit of the invention, and these are intended to be within the scope of the invention.

Claims

1. A bone conduction speaker, comprising: including support protecgulum and support backshell, install shell fragment on the support protecgulum, fix circle U iron in the shell fragment, fix at the main magnet of U iron inner chamber, fix at the magnificent department of main magnet free end, set up the U type circle on the support backshell, fix at the outlying voice coil loudspeaker voice coil of U type circle and PCBA, the voice coil loudspeaker voice coil is located the outlying upper end of U type circle, PCBA is located the outlying lower extreme of U type circle, the voice coil loudspeaker voice coil is connected with PCBA electricity.

2. A bone conduction speaker as claimed in claim 1, wherein: and the other end of the washer is fixed with an auxiliary magnet.

3. A bone conduction speaker as claimed in claim 1, wherein: the bracket is characterized in that a flange is arranged at the position, close to the edge, of the bracket rear shell, and the bracket rear shell is clamped into the bracket front shell through the flange to be fixedly connected with the bracket front shell.

4. A bone conduction speaker as claimed in claim 1, wherein: the outer edge of the elastic sheet is fixed at the interface of the front support shell and the rear support shell, a plastic ring is installed on the periphery of the U-shaped iron, and the inner edge of the elastic sheet is fixed on the plastic ring.

5. A bone conduction speaker as claimed in claim 4, wherein: one end of the plastic ring is flush with the open end of the U-shaped iron.

6. A bone conduction speaker as claimed in claim 4, wherein: the plastic ring is located in the middle section of the periphery of the U-shaped iron.

7. A bone conduction speaker as claimed in claim 1, wherein: the back of the U-shaped iron is provided with a boss, the inner ring of the elastic sheet is fixed on the boss, and the outer ring of the elastic sheet is fixed on the inner wall of the front shell of the bracket.