CN216313408U

CN216313408U - High-quality electric bone conduction loudspeaker

Info

Publication number: CN216313408U
Application number: CN202123112867.0U
Authority: CN
Inventors: 张�浩; 赵卫; 朱荣华; 潘顺东
Original assignee: Ningbo Shuo Positron Technology Co ltd
Current assignee: Ningbo Shuo Positron Technology Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-04-15
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a high-quality electric bone conduction loudspeaker which comprises a coil support, a coil, a magnetic circuit assembly, a spring plate support, a spring plate and a circuit control mechanism, wherein the spring plate is sleeved on the upper part of the coil support, the upper end of the spring plate is provided with a vibrating plate, the magnetic circuit assembly comprises a magnet yoke, a coil and a magnet, the magnet is arranged in the magnet yoke, the spring plate support is supported on the upper end of the magnet yoke, the coil is arranged opposite to the magnet, and the coil support and the coil are fixedly connected by adopting a lip type structure. The high-quality electric bone conduction loudspeaker has good tone quality and higher manufacturing yield.

Description

High-quality electric bone conduction loudspeaker

Technical Field

The utility model relates to the technical field of speakers, in particular to a high-quality electrodynamic type bone conduction loudspeaker.

Background

Bone conduction is a sound conduction mode, that is, 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 a classical sound conduction mode of generating sound waves through a vibrating diaphragm, 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.

As shown in fig. 1-4, chinese utility model patent No. 2020223657485 discloses a bone conduction speaker, which comprises a housing 1, a bottom plate 2, a magnetic circuit assembly and a support 3 are sequentially arranged in the housing 1, the support 3 comprises a support body 31, an upper connecting portion 32 and a lower connecting portion 33 which are fixedly arranged at two ends of the support body 31, an elastic sheet 4 is fixedly sleeved on the side surface of the support body 31, a blocking portion for limiting the downward movement of the elastic sheet 4 is arranged at the inner side of the housing 1, the upper connecting portion 32 is sleeved with the magnetic circuit assembly, the magnetic circuit assembly comprises a magnet 5 fixedly sleeved on the upper connecting portion 32 and a coil 6 sleeved outside the magnet 5, the upper end of the coil 6 is fixedly connected with the bottom plate 2, the bottom plate 2 is fixedly connected with the upper end of the housing 1, the upper end surface of the magnet 5 is arranged in a gap with the lower end of the bottom plate 2, the lower connecting portion 33 extends to the outside of the case 1 and is fixedly connected with the vibrating reed 7, the upper end surface of the vibrating reed 7 and the lower end surface of the case 1 are arranged in a gap, and when the coil 6 is electrified, the magnet 5, the bracket 3, the elastic sheet 4 and the vibrating reed 7 can vibrate along the longitudinal direction.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a high-quality electrodynamic bone conduction speaker, which has better sound quality and higher manufacturing yield than the bone conduction speaker disclosed in the background art.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

high-quality electrodynamic type osteoacusis loudspeaker, including coil carrier, coil, magnetic circuit assembly, shell fragment support, shell fragment and circuit control mechanism, coil carrier upper portion is located to the shell fragment cover, the upper end of shell fragment is equipped with the trembler, magnetic circuit assembly includes yoke, coil and magnet, magnet is located in the yoke, the shell fragment support supports in the upper end of yoke, the relative magnet setting of coil, coil carrier adopts lip formula structural fixation to link to each other with the coil.

Preferably, the inner side of the elastic sheet support is provided with a clamping groove for clamping the elastic sheet, and the elastic sheet support are integrally formed in a rubber coating mode.

Preferably, the coil support is provided with a through hole along a longitudinal direction.

Preferably, the spring plate has an axial compliance greater than a radial compliance.

Preferably, a magnet pressing plate is fixedly arranged at the upper end of the magnet.

Preferably, the radial dimension of the vibration plate is smaller than the inner diameter dimension of the spring support in the same direction.

Preferably, the circuit control mechanism includes a circuit board provided at a lower end of the yoke.

The utility model has the beneficial effects that: the high-quality electric bone conduction loudspeaker has good tone quality and higher manufacturing yield.

Drawings

Fig. 1 is a schematic view of the overall structure of a bone conduction speaker in the prior art;

fig. 2 is a front view of a partially exploded structure of a bone conduction speaker in the prior art;

fig. 3 is a full sectional view of a prior art bone conduction speaker;

fig. 4 is a fully exploded schematic view of a prior art bone conduction speaker;

FIG. 5 is a schematic view of the overall structure of the horn according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of an exploded view of the horn according to an embodiment of the present invention;

FIG. 7 is a full sectional view of a horn according to an embodiment of the present invention;

FIG. 8 is a front cross-sectional view of a horn according to an embodiment of the present invention;

fig. 9 is a full sectional view of a coil support according to an embodiment of the present invention.

Shown in the figure:

1-a magnetic yoke; 2-a spring plate; 3-a spring plate bracket; 4-a vibrating plate; 5-a coil support; 6-magnet pressing plate; 7-a magnet; 8-a coil; 9-a circuit board; 10-through hole.

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 5-8, the high-quality electric bone conduction speaker according to the embodiment of the present invention includes a coil support 5, a coil 8, a magnetic circuit assembly, a spring support 3, a spring 2, and a circuit control mechanism, wherein the spring 2 is sleeved on the upper portion of the coil support 5, the upper end of the spring 2 is provided with the vibrating reed 4, the magnetic circuit assembly includes a magnetic yoke 1, a coil 8, and a magnet 7, the magnet 7 is disposed in the magnetic yoke 1, the spring support 3 is supported on the upper end of the magnetic yoke 1, the coil 8 is disposed opposite to the magnet 7, and the coil support 5 and the coil 8 are fixedly connected by a lip structure, so as to improve the performance uniformity and the manufacturing yield of the speaker.

In this embodiment, the inboard of shell fragment support 3 is equipped with the draw-in groove that is used for joint shell fragment 2, shell fragment 2 and shell fragment support 3 adopt rubber coating mode integrated into one piece. Compared with the traditional bonding mode, the elastic sheet rubber coating increases the reliability of the loudspeaker, and can further improve the performance consistency and the manufacturing yield of the loudspeaker.

In the present embodiment, as shown in fig. 9, the coil support 5 is provided with through holes 10 in the longitudinal direction for increasing the exhaust gas in the cylinder. Specifically, when the loudspeaker works, internal gas can conveniently enter and exit, and the phenomenon that the vibration harmonic distortion of the loudspeaker is caused by solid conduction due to air vibration in an inner cavity is reduced.

In this embodiment, the axial compliance of the spring plate 2 is greater than the radial compliance. The larger the axial compliance of the elastic sheet 2 is, the better the low-frequency effect is, and then the frequency response effect of the bone conduction loudspeaker can be effectively improved.

In this embodiment, the radial dimension of the vibration plate 4 is smaller than the inner diameter dimension of the spring support 3 in the same direction. The purpose is to avoid noise and damage caused by collision of the vibrating reed 4 and the elastic sheet bracket 3 under the limit amplitude.

In this embodiment, the upper end of the magnet 7 is fixedly provided with a magnet pressing plate 6, and the circuit control mechanism comprises a circuit board 9 arranged at the lower end of the magnetic yoke 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. High-quality electrodynamic type bone conduction loudspeaker, including coil bracket (5), coil (8), magnetic circuit assembly, shell fragment support (3), shell fragment (2) and circuit control mechanism, coil bracket (5) upper portion is located to shell fragment (2) cover, the upper end of shell fragment (2) is equipped with trembler (4), magnetic circuit assembly includes yoke (1), coil (8) and magnet (7), magnet (7) are located in yoke (1), shell fragment support (3) are supported in the upper end of yoke (1), coil (8) relative magnet (7) set up, its characterized in that, coil bracket (5) and coil (8) adopt lip formula structure fixed to link to each other.

2. The high-quality electrodynamic bone conduction horn according to claim 1, wherein a slot for engaging the spring (2) is provided on an inner side of the spring support (3), and the spring (2) and the spring support (3) are integrally formed by encapsulation.

3. The high-quality electrodynamic bone conduction horn according to claim 1, wherein the coil support (5) is provided with a through hole (10) in a longitudinal direction.

4. The high quality electrodynamic bone conduction horn of claim 1, wherein the spring plate (2) has an axial compliance greater than a radial compliance.

5. The high-quality electric bone conduction speaker according to claim 1, wherein a magnet pressing plate (6) is fixed to an upper end of the magnet (7).

6. The high-quality electrodynamic bone conduction horn according to claim 1, wherein the radial dimensions of the membrane (4) are smaller than the inner diameter of the dome holder (3) in the same direction.

7. The high-quality electric bone conduction speaker according to claim 1, wherein the circuit control means includes a circuit board (9) provided at a lower end of the yoke (1).