CN212115579U

CN212115579U - Loudspeaker module

Info

Publication number: CN212115579U
Application number: CN202020229739.0U
Authority: CN
Inventors: 朱本超; 周岩; 周树芝
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-12-08
Anticipated expiration: 2030-02-28

Abstract

The utility model provides a loudspeaker module, including first casing, with first casing encloses into the second casing of sound production cavity jointly and accept in speaker monomer in the sound production cavity, speaker monomer slope set up in the sound production cavity, the second casing have to the bellied boss in speaker monomer one side, the boss with the bottom of second casing is the acute angle, the speaker monomer with leave the clearance between the boss, be provided with elastic buffer in the clearance. Compared with the prior art, the utility model discloses loudspeaker module can improve the cavity and utilize the space and can effectively restrain casing resonance when keeping the product miniaturization, promotes loudspeaker module's acoustic performance.

Description

Loudspeaker module

Technical Field

The utility model relates to an electroacoustic product technical field, in particular to speaker module.

Background

The speaker module is an important acoustic component in the portable electronic device, and is used for converting an electrical signal into an acoustic signal. Along with the continuous development of portable electronic equipment towards the direction of frivolousness, smallness, its inner space is littleer and littleer to the installation space who leaves for speaker module is also littleer and more. In order to meet the requirement of miniaturization of products, the prior art generally makes the plastic of the module housing thin or uses a thin metal plate to reduce the volume of the speaker module. However, when the speaker module is in operation, the thin plate is likely to resonate, causing distortion.

Meanwhile, the loudspeaker module in the prior art is installed in a closed cavity, the temperature generated during working cannot be effectively transferred outwards, and the loudspeaker module works at high temperature for a long time, so that the performance and reliability are reduced.

SUMMERY OF THE UTILITY MODEL

Not enough more than, the utility model aims at providing a speaker module, when aiming at satisfying speaker module miniaturization, frivolousization, restrain the casing resonance, avoid speaker module to produce listening murmur, simultaneously, can derive the heat of speaker module in the work more high-efficiently, promote the acoustic performance of speaker module under the long-time work.

In order to solve the technical problem, the utility model discloses a realize like this, a speaker module, including first casing, with first casing encloses into the second casing of sound production cavity jointly and accept in speaker monomer in the sound production cavity speaker monomer slope set up in the sound production cavity, the second casing has to the bellied boss of speaker monomer, the boss with the bottom of second casing is the acute angle, the speaker monomer with leave the clearance between the boss, be provided with elastic buffer in the clearance.

Preferably, the second housing includes a combination portion fixedly combined with the first housing and a reinforcing plate embedded in the combination portion, the reinforcing plate is provided with a flat plate portion and a fixing portion bent and extended from the flat plate portion, and the fixing portion is embedded in the combination portion.

Preferably, the reinforcing plate is made of metal.

Preferably, the reinforcing plate and the reinforcing part are formed by injection molding.

Preferably, the reinforcing plate of the second enclosure has a boss protruding toward the speaker unit, the boss being at an acute angle to the reinforcing plate.

Preferably, the inclination direction and the inclination angle of the boss are the same as those of the generation unit.

Preferably, the elastic buffer member is adhered to a surface of the speaker unit on a side close to the boss.

Preferably, the elastic buffer is a high thermal conductivity composite material.

Preferably, the elastic buffer member is any one of a heat-conducting cloud sheet, a heat-conducting silica gel, a foam metal and a metal elastic pad.

Preferably, the first shell comprises a combining part fixedly combined with the second shell and a reinforcing plate embedded in the combining part, the side wall of the first shell is provided with a sound outlet, and the loudspeaker module emits sound through the side sound outlet.

The utility model discloses a speaker module compares with correlation technique, beneficial effect lies in:

through to inlaying and locating the second casing the reinforcing plate sets up the boss, the boss with the reinforcing plate acutangulates, the speaker monomer with set up elastic buffer between the boss, can effectively restrain casing resonance, the reliability of reinforcing speaker module promotes the acoustic performance of speaker module.

Drawings

Fig. 1 is an exploded perspective view of the speaker module of the present invention.

Fig. 2 is a three-dimensional structure diagram of the speaker module of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and fig. 3, the speaker module of the present invention includes a first housing 1, a second housing 2 enclosing a sound cavity together with the first housing 1, and a speaker unit 5 disposed in the sound cavity. The speaker unit 5 is electrically connected to an external circuit through an electrical connector 10. The sound production cavity comprises a rear cavity 7 formed by the loudspeaker monomer 5 and the second shell 2 in a surrounding mode and a front cavity 6 opposite to the rear cavity 7, and the loudspeaker module forms a side sound outlet channel connected with the front cavity 6 by opening a sound outlet 11 on the side wall of the first shell 1. Meanwhile, the reinforcing plate 3 is embedded in the center of the first shell 1, and the reinforcing plate 3 is made of metal, so that the thickness of the shell is reduced, and the strength of the shell is increased. The second shell 2 is provided with a sound vent 8, and a damping sheet 9 is attached to the outer side of the sound vent 8 to be communicated with the outside air so as to balance the air pressure of the rear cavity 7.

The speaker monomer 5 is obliquely arranged in the sounding cavity, and the inclined structure can enable the volume of the front cavity 6 of the speaker module to be relatively reduced, namely the volume of the rear cavity 7 to be relatively increased, so that the frequency band of the speaker module is improved, the resonant frequency of the speaker module is reduced, and the acoustic performance of the speaker module is further improved.

The second casing 2 includes a reinforcing portion 22 fixedly coupled to the first casing 1 and a reinforcing plate 3 embedded in the reinforcing portion 22. In this embodiment, the reinforcing plate 3 is made of metal and is injection molded with the reinforcing portion 22.

As shown in fig. 1 and 3, the reinforcing plate 3 includes a flat plate portion 32 and a fixing portion 31 bent and extended from the flat plate portion 32, and the fixing portion 31 is embedded in the reinforcing portion 22. The reinforcing plate 3 has a boss 33, and the boss 33 is formed by recessing the reinforcing plate 3 toward the speaker unit side and protruding from the reinforcing plate 33. The boss 33 and the reinforcing plate 3 are integrally formed.

One or more bosses 33 may be provided. The boss 33 is additionally arranged on the reinforcing plate 33, so that the strength of the second shell 2 is increased under the condition that the second shell 2 is not required to be thickened, the reinforcing plate 3 can be effectively inhibited from generating resonance, and the product distortion is avoided.

A gap is left between the speaker unit 5 and the second casing 2, and further, a gap is left between the speaker unit 5 and the boss 33. The elastic buffer member 4 is adhered to the surface of the speaker unit 5 on the side close to the boss 33, and fills the gap to provide a buffer force between the speaker unit 5 and the boss 33, thereby suppressing the resonance of the housing and avoiding the generation of listening noise of the speaker module. Boss 33 and reinforcing plate 3 acutangular angle, the inclination of boss 33 is the same with speaker monomer 5's inclination, and is specific, and the upper surface of boss 33 is parallel with speaker monomer 5's bottom surface, makes speaker monomer 5 atress in-process even, prevents that local pressurized is excessive or the atress is not enough to make speaker monomer 5's working process more stable.

The elastic buffer 4 can also be adhered to the surface of the boss 33, and can be selected independently according to the assembling condition in practical application.

The composite material that heat conductivility is excellent is selected to elastic buffer member 4, can be any one in heat conduction cloud piece, heat conduction silica gel, foam metal, the metal bullet pad, makes elastic buffer member 4 have composite material's high elasticity and the excellent heat conductivity of heat conduction material concurrently, correspondingly, elastic buffer member 4 pastes on boss 33 surface, and elastic buffer member 4 can cover boss 33 surface completely, also can not cover completely the surface of boss 33, the preferred elastic buffer member 4 of this embodiment covers boss 33 surface completely, design like this increase elastic buffer member 4 with the area of contact of second casing 2 can derive the heat that produces in the speaker module working process fast high-efficiently, reduces the casing temperature of speaker module, improves under the long-time operating condition generating device's reliability.

The utility model discloses a to inlaying and locating the second casing the reinforcing plate sets up the boss, the boss with the reinforcing plate acutangulates, the speaker monomer with set up elastic buffer between the boss, can effectively restrain the casing resonance, and the reliability of reinforcing speaker module promotes the acoustic performance of speaker module.

Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement and the like of the present invention which is made by the ordinary skilled person in the art from the above conception within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The utility model provides a loudspeaker module, including first casing, with the second casing that first casing encloses into the vocal cavity jointly and accept in speaker monomer in the vocal cavity, its characterized in that: speaker monomer slope set up in the sounding cavity, the second casing have to the bellied boss in speaker monomer one side, the boss with the bottom of second casing is the acute angle, the speaker monomer with leave the clearance between the boss, be provided with elastic buffer in the clearance.

2. The speaker module of claim 1, wherein: the second shell comprises a combination part fixedly combined with the first shell and a reinforcing plate embedded in the combination part, the reinforcing plate is provided with a flat plate part and a fixing part bent and extended from the flat plate part, and the fixing part is embedded in the combination part.

3. The speaker module as claimed in claim 2, wherein: the reinforcing plate is made of metal.

4. A speaker module as claimed in claim 3, wherein: the reinforcing plate and the joint part are formed by injection molding.

5. The speaker module of claim 4, wherein: the reinforcing plate of the second case has a boss protruding toward the speaker unit, the boss forming an acute angle with the reinforcing plate.

6. The speaker module as claimed in claim 5, wherein the bosses are inclined in the same direction and at the same angle as the speaker unit.

7. The speaker module as claimed in claim 1, wherein the elastic buffer member is adhered to a surface of the speaker unit on a side thereof adjacent to the boss.

8. The speaker module as in claim 1 or 7, wherein the elastomeric buffer is a high thermal conductivity composite material.

9. The speaker module as claimed in claim 8, wherein the resilient buffer is any one of a heat conductive cloud, a heat conductive silicone, a foam metal, and a metal spring pad.

10. The speaker module as claimed in claim 1, wherein the first housing includes a combination portion fixedly combined with the second housing and a reinforcing plate embedded in the combination portion, the first housing has a side wall provided with a sound hole, and the speaker module emits sound through the side sound hole.