CN108471580B

CN108471580B - Loudspeaker module

Info

Publication number: CN108471580B
Application number: CN201810388034.0A
Authority: CN
Inventors: 刘丛丛; 陈阿亮; 陈国强
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2018-04-26
Filing date: 2018-04-26
Publication date: 2020-10-09
Anticipated expiration: 2038-04-26
Also published as: CN108471580A

Abstract

The embodiment of the invention provides a loudspeaker module. This speaker module includes: a housing and a speaker unit; the loudspeaker single body divides the cavity in the shell into a front sound cavity and a rear sound cavity; a non-closed first colloid is formed around the loudspeaker monomer; a glue coating opening is formed in the position, corresponding to the opening of the first glue body, of the shell, and a second glue body is coated in the glue coating opening; the second colloid is formed around the loudspeaker monomer and communicated with the first colloid to form a sealing piece for sealing the rear sound cavity. The technical scheme provided by the embodiment of the invention can ensure the waterproof sealing performance and reduce the size of the loudspeaker module so as to meet the design requirement of electronic equipment.

Description

Loudspeaker module

Technical Field

The invention belongs to the technical field of electroacoustic conversion devices, and particularly relates to a loudspeaker module.

Background

The loudspeaker is a device capable of converting electric energy into sound energy, and is widely applied to electronic equipment such as mobile phones and computers.

The speaker module generally includes a housing and a speaker unit, and the speaker unit divides a cavity in the housing into a front acoustic cavity and a rear acoustic cavity. Among the prior art, in order to ensure the waterproof sealing performance of speaker module, then need inside and being located the free rubber coating space of reserving certain width all around of speaker in the shell, the colloid in the space of gluing realizes the complete sealing of back sound chamber to prevent that back sound chamber from intaking. However, the existing electronic equipment is increasingly lighter and thinner, and the design space requirement of the speaker module is increasingly strict, and if the glue coating manner in the prior art is adopted, the size requirement of the existing electronic equipment cannot be met.

Disclosure of Invention

An object of the present invention is to reduce the overall size of a speaker while ensuring waterproof sealing properties to meet the requirements of electronic equipment.

According to one aspect of the present invention, a speaker module is provided. This speaker module includes: a housing and a speaker unit; the loudspeaker single body divides the cavity in the shell into a front sound cavity and a rear sound cavity; a non-closed first colloid is formed around the loudspeaker monomer; a glue coating opening is formed in the position, corresponding to the opening of the first glue body, of the shell, and a second glue body is coated in the glue coating opening; the second colloid is formed around the loudspeaker monomer and communicated with the first colloid to form a sealing piece for sealing the rear sound cavity.

Optionally, a mounting part for mounting the speaker unit is arranged in the housing; the mounting part comprises a non-closed retaining wall surrounding the periphery of the loudspeaker monomer; the first colloid is coated between the non-closed retaining wall and the loudspeaker monomer.

Optionally, the glue coating port is arranged corresponding to the opening position of the non-closed retaining wall of the installation part; the mounting portion further includes: the limiting bulge is positioned at the opening of the non-closed retaining wall and used for limiting the loudspeaker single body; the thickness of the limiting bulge is smaller than that of the non-closed retaining wall.

Optionally, the height of the limiting protrusion is lower than that of the non-closed retaining wall.

Optionally, the cross section of the limiting protrusion is a trapezoidal section with a small upper end and a large lower end.

Optionally, the speaker unit is rectangular; the opening of the first colloid is positioned on the long side of the single loudspeaker, and two end parts of the opening of the first colloid are respectively terminated at the connecting parts of two opposite short sides and the long side of the single loudspeaker; or the opening of the first colloid is positioned on the short side of the single loudspeaker, and the two end parts of the opening of the first colloid are respectively terminated at the connecting parts of the two opposite long sides and the short side of the single loudspeaker.

Optionally, the size of the glue coating opening along the direction of one rectangular side of the speaker monomer is a first size; the opening size of the opening of the first colloid along the direction of the rectangular edge is a second size; the first size is larger than or equal to the second size, and two end parts of the opening of the first colloid are exposed through the gluing openings.

Optionally, at least one of the two ends of the opening of the first colloid is provided with an extension part; the extension part is formed by extending from the end part to the direction far away from the loudspeaker single body.

Optionally, the housing comprises a first housing and a second housing; a first notch is formed in the position, opposite to the opening of the first colloid, on the side wall of the first shell; a second notch is formed in the position, opposite to the opening of the first colloid, on the side wall of the second shell; when the first shell is buckled with the second shell, the first notch and the second notch form the gluing opening.

Optionally, the glue opening is a funnel-shaped glue opening.

According to the technical scheme provided by the embodiment of the invention, a sealing element for sealing the rear sound cavity of the loudspeaker monomer is formed by the non-closed first colloid surrounding the periphery of the loudspeaker monomer and the second colloid filled at the glue coating port; because set up the rubber coating mouth on the casing, can avoid lieing in the rubber coating space of reserving certain width on one side of rubber coating mouth at the speaker monomer, when guaranteeing back sound cavity leakproofness, guaranteeing water-proof effects, reduce the outline size of speaker module.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic diagram of an internal structure of a speaker module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first housing according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a speaker module according to an embodiment of the present invention;

fig. 4 is an exploded view of a speaker module according to an embodiment of the invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1, 2 and 3, the speaker module includes: a housing 1 and a speaker unit 2; the loudspeaker single body 2 divides the cavity in the shell 1 into a front sound cavity 10 and a rear sound cavity 11; a non-closed first colloid 101 is formed around the loudspeaker single body 2; a glue coating opening 100 is formed in the position, corresponding to the opening of the first glue body 101, of the shell 1, and a second glue body 102 is coated in the glue coating opening 100; the second gel 102 is formed around the speaker unit 2 and communicates with the first gel 101 to form a sealing member for sealing the rear acoustic cavity 11.

The loudspeaker single body 2 can be hermetically connected with the shell 1 through the first colloid 101 and the second colloid 102 around the loudspeaker single body, so that the front sound cavity 10 and the rear sound cavity 11 are completely separated; or, the inside installation department that sets up of casing 1, speaker monomer 2 install on the installation department, and speaker monomer 2 realizes sealing connection through first colloid 101 and second colloid 102 around it and installation department, realizes separating completely of preceding sound chamber 10 and back sound chamber 11. The complete separation of the front and rear acoustic chambers 10, 11 prevents water entering from the module outlet from entering the rear acoustic chamber 11 and causing the speaker module to fail. Wherein the module sound outlet is communicated with the front sound cavity 10.

Specifically, as shown in fig. 1 and 2, a mounting portion 20 for mounting the speaker unit 2 is provided in the housing 1; the mounting portion 20 includes a non-closed retaining wall 201 surrounding the speaker unit 2; a first colloid 101 is coated between the non-closed retaining wall 201 and the speaker unit 2. The side wall of the speaker unit 2 is bonded and connected with the non-closed retaining wall 201 through the first colloid 101. The opening of the non-closed retaining wall 201 is communicated with and corresponds to the opening end of the first colloid 101, the opening design of the non-closed retaining wall 201 can further increase the glue spreading amount of the second colloid at the glue spreading opening 100, and the waterproofness is improved. Specifically, the first colloid 101 may be disposed on the upper end surface of the non-closed retaining wall 201 or in a gap formed between the side surface of the non-closed retaining wall 201 facing the side wall of the speaker unit 2 and the side wall of the speaker unit 2.

In specific implementation, the shape and structure of the non-closed retaining wall 201 are matched with the speaker unit 2, so as to position the installation of the speaker unit 2.

In particular, the mounting portion 20 may be integrally formed with the housing 1, thereby simplifying the manufacturing process.

Further, as shown in fig. 2, the glue applying opening 100 is disposed corresponding to an opening position of the non-closed retaining wall 201 of the mounting portion 20; the mounting portion 20 may further include: and a limiting bulge 202 positioned at the opening of the non-closed retaining wall 201 and used for limiting the loudspeaker single body 2. The shape and size of the limiting protrusion 202 can be designed according to actual needs, and this embodiment is not particularly limited in this respect. For example: the thickness of the limiting protrusion 202 can be smaller than that of the non-closed retaining wall 201, the height of the limiting protrusion 202 can be lower than that of the non-closed retaining wall 201, and the cross section of the limiting protrusion 202 is a trapezoidal section with a small upper end and a large lower end. This minimizes the space occupied by the position-limiting protrusion 202 to allow more space for glue application.

In practical applications, the opening of the first glue body 101 may be multiple, that is, a plurality of glue applying openings 100 are correspondingly disposed on the housing 1. When the speaker unit 2 has a rectangular structure, the first colloid 101 has an opening on the short side and/or the long side of the speaker unit 2. Preferably, the first colloid 101 has an opening on a short side or a long side of the speaker unit 2.

In specific implementation, the speaker unit 2 is rectangular; the opening of the first glue body 101 is located on the long side of the single loudspeaker body 2, and two end portions of the opening of the first glue body 101 are respectively terminated at the connection positions of the two opposite short sides of the single loudspeaker body 2 and the long side. That is, the two end portions of the opening of the first colloid 101 do not extend out the speaker monomer 2 is located on the side wall of the long side, and the long side of the speaker monomer 2 is not required to be provided with a glue coating space with a certain width, and the glue coating is sealed through the glue coating port 100 on the shell 1, so that the size of the speaker module along the short axis direction of the speaker monomer 2 can be effectively reduced.

The rectangular speaker unit 2 includes two opposite short axes and two opposite long axes. The first encapsulant 101 may have an opening on one long side, or two opposite long sides. When the openings are formed on the two opposite long sides, the glue coating openings 100 are formed in the positions, corresponding to the two openings of the first glue body 101, of the shell 1, and the second glue bodies 102 communicated with the first glue bodies 101 are coated in the glue coating openings, so that the size of the loudspeaker module in the short axis direction of the loudspeaker (namely the width of the loudspeaker module) can be greatly reduced.

Or, the opening of the first glue body 101 is located on the short side of the speaker unit 2, and two end portions of the opening of the first glue body 101 are respectively terminated at the connection between the two opposite long sides and the short side of the speaker unit 2. That is, the two end portions of the opening of the first colloid 101 do not extend out the side wall of the speaker unit 2 on the short side, and the short side of the speaker unit 2 does not need to reserve a glue coating space with a certain width, and the glue coating is sealed through the glue coating port 100 on the casing 1, so that the size of the speaker module along the long axis direction of the speaker unit 2 (namely, the length of the speaker module) can be effectively reduced.

It should be noted that the opening position of the opening end of the first colloid 101 needs to be designed according to the actual conditions such as the module sound emitting mode, the position of the speaker unit in the module housing, and the like. For example: when the speaker module is in the side sound outlet mode, if it is difficult to form a glue coating opening with a large enough size on the side wall where the side sound outlet is located, the opening of the first glue body 101 can be formed at a position opposite to the other side wall different from the side sound outlet.

As shown in fig. 1 and 2, a dimension of the glue applying opening 100 along a direction of one rectangular side of the speaker unit 2 is a first dimension; the opening size of the opening of the first colloid 101 along the direction of the rectangular side is a second size; the first size is greater than or equal to the second size, and two end portions of the opening of the first glue body 101 are exposed through the glue coating opening 100. The two exposed ends of the opening of the first glue body 101 are in contact connection with the second glue body 102 in the glue coating opening 100. Preferably, the first size is larger than the second size, the glue coating amount of the second glue body is increased, and the waterproofness is improved.

When the glue coating opening 100 is formed on the long side of the speaker unit 2 (as shown in fig. 1), the size of the glue coating opening 100 along the long side direction (i.e., the long axis direction) of the speaker unit 2 is a first size, and the size of the opening of the first glue body 101 along the long side direction is a second size. When the glue opening 100 is formed at a short side of the speaker unit 2 (not shown), a dimension of the glue opening 100 along a short side direction (i.e., a short axis direction) of the speaker unit 2 is a first dimension, and a dimension of an opening of the first glue body 101 along the short side direction is a second dimension. Further, in order to increase the contact area between the first colloid 101 and the second colloid 102, an extension part may be provided at least one of the two ends of the opening of the first colloid 101. Specifically, at least one of two ends of the open end of the first colloid 101 is provided with an extension 1011; the extension 1011 extends from the end in a direction away from the speaker unit 2.

In specific implementation, as shown in fig. 3 and 4, the housing 1 includes a first housing 12 and a second housing 13; a first notch 200 is formed in the position, opposite to the opening of the first colloid 101, on the side wall of the first shell 12; a second notch 300 is formed in the position, opposite to the opening of the first colloid 101, on the side wall of the second shell 13; when the first housing 12 is fastened to the second housing 13, the first notch 200 and the second notch 300 form the glue applying opening 100. The shape of the glue applying opening 100 may be set according to actual needs, and the present invention is not particularly limited thereto. As shown in fig. 2, the dispensing opening 100 is a funnel-shaped dispensing opening.

The first case 12 may be provided with an ultrasonic line, and the first case 12 and the second case 13 are coupled by the ultrasonic line. The second glue 102 at the glue-applying opening 100 merges with the ultrasonic line at its periphery to effect a housing seal.

According to the technical scheme provided by the embodiment of the invention, a sealing element for sealing the rear sound cavity of the loudspeaker monomer is formed by the non-closed first colloid surrounding the periphery of the loudspeaker monomer and the second colloid filled at the glue coating port; because set up the rubber coating mouth on the casing, can avoid lieing in the rubber coating space of reserving certain width on one side of rubber coating mouth at the speaker monomer, when guaranteeing back sound cavity leakproofness, guaranteeing waterproof nature, reduce the outline size of speaker module.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A speaker module, comprising: the loudspeaker comprises a shell and a loudspeaker single body, wherein the shell comprises a first shell and a second shell;

the loudspeaker single body divides the cavity in the shell into a front sound cavity and a rear sound cavity;

a non-closed first colloid is formed around the loudspeaker monomer;

a first notch is formed in the position, opposite to the opening of the first colloid, on the side wall of the first shell;

a second notch is formed in the position, opposite to the opening of the first colloid, on the side wall of the second shell;

when the first shell is buckled with the second shell, the first notch and the second notch form a glue coating opening, and a second glue body is coated in the glue coating opening;

the second colloid is formed around the loudspeaker monomer and communicated with the first colloid to form a sealing piece for sealing the rear sound cavity.

2. The speaker module as claimed in claim 1, wherein a mounting portion for mounting the speaker unit is provided in the housing;

the mounting part comprises a non-closed retaining wall surrounding the periphery of the loudspeaker monomer;

the first colloid is coated between the non-closed retaining wall and the loudspeaker monomer.

3. The speaker module as claimed in claim 2, wherein the glue coating opening is disposed corresponding to the opening of the non-closed retaining wall of the mounting portion; the mounting portion further includes: the limiting bulge is positioned at the opening of the non-closed retaining wall and used for limiting the loudspeaker single body;

the thickness of the limiting bulge is smaller than that of the non-closed retaining wall.

4. The speaker module as claimed in claim 3, wherein the height of the position-limiting protrusion is lower than the height of the non-closed retaining wall.

5. The speaker module as claimed in claim 3, wherein the cross section of the limiting protrusion is a trapezoidal section with a small upper end and a large lower end.

6. The speaker module as claimed in any one of claims 1 to 5, wherein the speaker unit is rectangular;

the opening of the first colloid is positioned on the long side of the single loudspeaker, and two end parts of the opening of the first colloid are respectively terminated at the connecting parts of two opposite short sides and the long side of the single loudspeaker; or

The opening of the first colloid is located on the short side of the loudspeaker single body, and two end parts of the opening of the first colloid are respectively terminated at the joint of the two opposite long sides of the loudspeaker single body and the short side.

7. The speaker module as claimed in claim 6, wherein the size of the glue hole along a rectangular side of the speaker unit is a first size;

the opening size of the opening of the first colloid along the direction of the rectangular edge is a second size;

the first size is larger than or equal to the second size, and two end parts of the opening of the first colloid are exposed through the gluing openings.

8. The loudspeaker module as recited in any one of claims 1 to 5, wherein at least one of the two ends of the opening of the first gel is provided with an extension;

the extension part is formed by extending from the end part to the direction far away from the loudspeaker single body.

9. The speaker module as claimed in any one of claims 1-5, wherein the glue port is a funnel-shaped glue port.