CN215379226U

CN215379226U - Bone conduction loudspeaker

Info

Publication number: CN215379226U
Application number: CN202121241568.4U
Authority: CN
Inventors: 丁松森
Original assignee: Zhongke Shengtemei Suzhou Acoustic Technology Co ltd
Current assignee: Zhongke Shengtemei Suzhou Acoustic Technology Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-12-31
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a bone conduction loudspeaker, which comprises a bracket, a circuit board embedded in the bracket, a main control chip and a circuit which are installed on the circuit board, and a vibration excitation assembly which is partially installed on the circuit board, wherein the vibration excitation assembly comprises a voice coil, and the voice coil is fixedly installed on the circuit board and is electrically connected to the main control chip and the circuit. The bone conduction loudspeaker disclosed by the utility model greatly reduces the weight of a product applying the bone conduction microphone on one hand, reduces the development difficulty of the product applying the bone conduction microphone on the other hand, reduces the production cost of subsequent application products, and is beneficial to popularization of the bone conduction loudspeaker.

Description

Bone conduction loudspeaker

Technical Field

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

Background

Bone conduction is a sound conduction mode, namely, sound is converted into mechanical vibration with different frequencies, and sound waves are transmitted through the skull, the bone labyrinth, the lymph fluid of the inner ear, the spiral organ and the auditory center of a human body. Compared with the traditional sound conduction mode of generating sound waves through a sound film, the bone conduction mode omits a plurality of sound wave transmission steps, can realize clear sound restoration in a noisy environment, and does not influence other people due to the fact that the sound waves are diffused in the air.

The loudspeaker manufactured by applying the bone conduction sounding technology is called as follows: bone conduction speaker, the conduction of its sound wave is different with ordinary pleasant formula, does not need the vibration of eardrum, but directly passes to auditory nerve through the bone, has both improved the travelling comfort, has protected user's hearing again, can also make the user directly hear external sound clearly, has its unique superiority, but current bone conduction speaker has following defect:

the existing bone conduction loudspeaker is only provided with a magnetic component and an elastic component, and a circuit board and a chip for driving the bone conduction loudspeaker to work are usually arranged independently or are arranged on an actual product, so that the weight of the product using the bone conduction microphone is increased, the development difficulty of the product using the bone conduction microphone is increased, and the bone conduction loudspeaker is not beneficial to popularization.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bone conduction loudspeaker, which can reduce the quality of application products and reduce the development difficulty of the application products.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a bone conduction speaker, includes the support, inlays to be established circuit board in the support, install main control chip and circuit and part on the circuit board are installed vibration excitation subassembly on the circuit board, vibration excitation subassembly includes the voice coil loudspeaker voice coil, voice coil loudspeaker voice coil fixed mounting be in on the circuit board and the electricity be connected to main control chip and circuit.

Preferably, an annular convex edge is arranged on the inner side of the support, the circuit board abuts against one side of the annular convex edge, and the rest parts of the vibration exciting assembly except the voice coil are arranged on the other side of the annular convex edge.

Preferably, the vibration exciting assembly further comprises a magnetic assembly and a spring vibrating plate arranged between the annular convex edge and the magnetic assembly, the spring vibrating plate and the annular convex edge are arranged concentrically.

Preferably, the spring vibration piece is of an annular hollow structure, the spring vibration piece is sleeved outside the voice coil, one end of the spring vibration piece abuts against the convex edge, and the other end of the spring vibration piece abuts against the magnetic assembly.

Preferably, the spring vibrating piece comprises an outer ring, an inner ring and a plurality of ribs connected between the outer ring and the inner ring, the outer ring abuts against the annular convex edge, and the magnetic component abuts against the inner ring.

Preferably, the magnetic assembly comprises a magnetic cup, a magnet sleeved outside the magnetic cup and a magnetic conductive sheet sleeved outside the magnetic cup, the magnetic conductive sheet abuts against between the magnet and the spring vibrating sheet, a gap is formed between the magnetic cup and the magnet and between the magnet and the magnetic conductive sheet, and the voice coil is partially embedded in the gap.

Preferably, the magnetic cup comprises an annular top wall and a side wall extending downwards from the inner peripheral edge of the annular top wall, the magnet and the magnetic conductive sheet are sleeved outside the side wall, and the magnet abuts against between the annular top wall and the magnetic conductive sheet.

Preferably, the bone conduction speaker further comprises a box cover covering the vibration exciting assembly, and one or more through holes are formed in the box cover.

Preferably, the box cover comprises a top cover, a side cover extending downwards from the outer periphery of the top cover and a folded edge extending outwards from the bottom end of the side cover, and the spring vibrating piece abuts between the annular convex edge and the folded edge.

Preferably, the circuit board is provided with a fabrication hole corresponding to the voice coil.

Compared with the prior art, the utility model has the following advantages:

the coil of the bone conduction speaker is directly fixed on the circuit board provided with the main control chip and the circuit, so that the circuit board is directly used as a structural member of the bone conduction speaker, on one hand, the weight of a product applying the bone conduction microphone is greatly reduced, on the other hand, the development difficulty of the product applying the bone conduction microphone is reduced, the production cost of subsequent application products is reduced, and the popularization of the bone conduction speaker is facilitated.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the utility model as a matter of case. In the drawings:

fig. 1 is a schematic structural diagram of a bone conduction speaker according to the present invention;

fig. 2 is an exploded view of a bone conduction speaker according to the present invention;

fig. 3 is a cross-sectional view of a bone conduction speaker of the present invention;

FIG. 4 is a schematic diagram of the main control chip and the circuit assembly in one embodiment;

fig. 5 is a schematic diagram of the main control chip and the circuit in another embodiment.

Shown in the figure:

1. a support; 11. an annular convex edge; 12. a groove; 2. a circuit board; 21. a fabrication hole; 3. a main control chip and a circuit; 41. a voice coil; 421. a magnetic cup; 4211. a top wall; 4212. a side wall; 422. a magnet; 423. a magnetic conductive sheet; 424. a gap; 43. a spring vibrating plate; 431. an outer ring; 432. an inner circular ring; 433. ribs; 44. a box cover; 441. a top cover; 442. a side cover; 443. folding edges; 45. and a through hole.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to fig. 3, the novel bone conduction speaker according to the present application comprises a bracket 1, a circuit board 2 embedded in the bracket 1, a main control chip and a circuit 3 mounted on the circuit board 2, and a vibration exciting assembly partially mounted on the circuit board 2, wherein the vibration exciting assembly comprises a voice coil 41, and the voice coil 41 is fixedly mounted on the circuit board 2 and electrically connected to the main control chip and the circuit 3. The voice coil 41 is preferably fixed on the circuit board through glue, and the voice coil 41 is directly fixed on the circuit board 2, so that the circuit board 2 is used as a structural member of the bone conduction speaker, on one hand, the weight of a product applying the bone conduction microphone is greatly reduced, and on the other hand, the development difficulty of the product applying the bone conduction microphone is reduced.

Specifically, as shown in fig. 3, the support 1 is annular, preferably circular, an annular convex edge 11 is provided inside the support 1, the circuit board 2 abuts against one side of the annular convex edge 11 by gluing, and the rest of the vibration exciting assembly except for the voice coil 41 is provided on the other side of the annular convex edge 11. The vibration exciting assembly further comprises a magnetic assembly and a spring vibrating plate 43 arranged between the annular convex edge 11 and the magnetic assembly, the spring vibrating plate 43 and the annular convex edge 11 are arranged concentrically.

As further shown in fig. 2, the spring vibrating plate 43 is an annular hollow structure and is sleeved outside the voice coil 41, one end of the spring vibrating plate 43 abuts against the annular ledge 11, and the other end of the spring vibrating plate 43 abuts against the magnetic component. Preferably, the spring vibrating plate 43 includes an outer ring 431, an inner ring 432 embedded in the outer ring 431, and a plurality of ribs 433 connected between the outer ring 431 and the inner ring 432, the outer ring 431 abuts on the annular ledge 11, the magnetic assembly abuts on the inner ring 432, and the inner ring 432 is sleeved outside the voice coil 41.

The magnetic assembly comprises a magnetic cup 421, a magnet 422 sleeved outside the magnetic cup 421 and a magnetic conductive sheet 423 sleeved outside the magnetic cup 421, the magnet 422 and the magnetic conductive sheet 423 are concentrically arranged, the magnetic conductive sheet 423 abuts against between the magnet 422 and an inner circular ring 432 of the spring vibrating sheet 43, a gap 424 is formed between the magnetic cup 421 and the magnet 422 and the magnetic conductive sheet 423, and the voice coil 41 is partially embedded in the gap 424. Preferably, the magnetic cup 421 includes an annular top wall 4211, a side wall 4212 extending downward from an inner peripheral edge of the annular top wall 4211, the magnet 422 and the magnetic conductive piece 423 are sleeved outside the side wall 4212, the voice coil 41 is specifically embedded in a gap 424 formed between the side wall 4212 and the magnet 422 and the magnetic conductive piece 423, and the magnet 422 abuts between the annular top wall 4211 and the magnetic conductive piece 423.

The bone conduction speaker further comprises a box cover 44 covering the vibration exciting assembly, and one or more through holes 45 are formed in the box cover 44. Specifically, the lid 44 includes a top cover 441, a side cover 442 extending downward from the outer periphery of the top cover 441, and a folded edge 443 extending outward from the bottom end of the side cover 442, the outer ring 431 of the spring vibrating piece 43 abuts between the annular protruding edge 11 and the folded edge 443, and the through hole 45 is opened in the top cover 441.

The circuit board 2 is provided with a process hole 21 corresponding to the voice coil 41, the process hole 21, the voice coil 41 and the magnetic cup 421 are concentrically arranged, and the process hole 21 can be used as an assembly process hole of a product applying the bone conduction microphone, so that the assembly difficulty is reduced.

As shown in fig. 4, in an embodiment, the main control chip and the circuit 3 are installed outside the support 1, the main control chip and the circuit 3 may be installed on the circuit board 2 located on the same side of the voice coil 41, or may be installed on the circuit board 2 located on the opposite side of the voice coil 41, in this embodiment, a groove 12 for exposing the circuit board 2 is formed on one side of the support 1, and the groove 12 is flush with the annular convex edge 11, so as to ensure that the circuit board 2 can be horizontally installed on the support 1.

As shown in fig. 5, in another embodiment, the main control chip is installed inside the support 1, and in this embodiment, the main control chip and the circuit 3 are installed on the circuit board 2 located on the reverse side of the voice coil 41, so that the volume of the vibration exciting assembly is not affected, and the bone conduction speaker is reasonable in structure.

When the bone conduction loudspeaker is used, the voice coil 41 is electrified to generate a magnetic field, the changed magnetic field drives the vibration exciting assembly to move under the condition that the voice coil 41 is fixed, and the whole support 1 and the box cover 44 can be attached to the face to conduct bone conduction and sound transmission. According to the bone conduction microphone, the coil of the bone conduction speaker is directly fixed on the circuit board provided with the main control chip and the circuit, so that the circuit board is directly integrated as a structural part of the bone conduction speaker, on one hand, the weight of a product applying the bone conduction microphone is greatly reduced, on the other hand, the development difficulty of the product applying the bone conduction microphone is reduced, the production cost of subsequent application products is reduced, and the popularization of the bone conduction speaker is facilitated.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicants be construed as having contemplated such subject matter as being part of the disclosed subject matter.

Claims

1. The utility model provides a bone conduction speaker, its characterized in that includes the support, inlays to be established circuit board in the support, install main control chip and circuit and part on the circuit board are installed vibration excitation subassembly on the circuit board, vibration excitation subassembly includes the voice coil loudspeaker voice coil, voice coil loudspeaker voice coil fixed mounting be in on the circuit board and the electricity be connected to main control chip and circuit.

2. The bone conduction speaker as claimed in claim 1, wherein an annular flange is provided inside the support, the circuit board abuts against one side of the annular flange, and the rest of the vibration exciting assembly except the voice coil is provided on the other side of the annular flange.

3. The bone conduction speaker of claim 2, wherein the vibration excitation assembly further comprises a magnetic assembly and a spring diaphragm disposed between the annular ledge and the magnetic assembly, the spring diaphragm, and the annular ledge being concentrically disposed.

4. The bone conduction speaker as claimed in claim 3, wherein the spring vibrating plate is a hollow ring structure, the spring vibrating plate is sleeved outside the voice coil, one end of the spring vibrating plate abuts against the convex edge, and the other end of the spring vibrating plate abuts against the magnetic component.

5. The bone conduction speaker as claimed in claim 4, wherein the spring plate comprises an outer ring, an inner ring and a plurality of ribs connected between the outer ring and the inner ring, the outer ring abuts against the annular ledge, and the magnetic member abuts against the inner ring.

6. The bone conduction speaker according to any one of claims 3 to 5, wherein the magnetic assembly comprises a magnetic cup, a magnet disposed outside the magnetic cup, and a magnetic conductive plate disposed outside the magnetic cup, the magnetic conductive plate abuts against between the magnet and the vibrating reed, a gap is formed between the magnetic cup and the magnet and the magnetic conductive plate, and the voice coil is partially embedded in the gap.

7. The bone conduction speaker of claim 6, wherein the magnetic cup comprises an annular top wall, a side wall extending downward from an inner peripheral edge of the annular top wall, the magnet and the magnetic conductive plate are sleeved outside the side wall, and the magnet abuts between the annular top wall and the magnetic conductive plate.

8. The bone conduction speaker as claimed in any one of claims 3 to 5, further comprising a lid covering the vibration exciter assembly, wherein the lid has one or more through holes.

9. The bone conduction speaker as recited in claim 8, wherein the cover comprises a top cover, a side cover extending downward from an outer periphery of the top cover, and a flange extending outward from a bottom end of the side cover, the spring diaphragm abutting between the annular ledge and the flange.

10. The bone conduction speaker as claimed in claim 1, wherein the circuit board is provided with a fabrication hole corresponding to the voice coil.