CN107231592B

CN107231592B - standard accessory and standard accessory group of speaker module shell and speaker module

Info

Publication number: CN107231592B
Application number: CN201710353671.XA
Authority: CN
Inventors: 张军; 苏涛
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2017-05-18
Filing date: 2017-05-18
Publication date: 2019-12-13
Anticipated expiration: 2037-05-18
Also published as: CN107231592A

Abstract

the invention discloses a standard accessory for a loudspeaker module shell, a standard accessory group and a loudspeaker module. The loudspeaker module comprises a loudspeaker module shell and a loudspeaker monomer accommodated in the loudspeaker module shell, wherein the loudspeaker module shell comprises a shell body piece and a standard accessory, the shell body piece is provided with an installation through hole matched with an accessory body of the standard accessory, and the installation through hole is communicated with a rear sound cavity of the loudspeaker module. The standard fitting includes a fitting body and a leak hole disposed on the fitting body, the leak hole extending through opposing first and second surfaces of the fitting body. The standard accessory is fixedly installed in the installation through hole, and the first surface of the accessory body is located on one side of the outer surface of the loudspeaker module shell.

Description

Standard accessory and standard accessory group of speaker module shell and speaker module

Technical Field

The invention relates to the technical field of electroacoustic products, in particular to a standard accessory for a loudspeaker module shell, a standard accessory group for the loudspeaker module shell and a loudspeaker module.

Background

the loudspeaker module is an important acoustic device of portable electronic equipment, is used for completing the conversion between an electric signal and an acoustic signal, and is an energy conversion device. The speaker module generally includes a speaker module housing and a speaker unit accommodated in the speaker module housing, and an inner cavity of the speaker module housing is divided into a front acoustic cavity and a rear acoustic cavity by a diaphragm of the speaker unit, wherein the front acoustic cavity is communicated with the outside through an acoustic hole.

The speaker monomer can produce a large amount of heats in the course of the work, and this heat can cause the gas expansion of back sound intracavity, leads to the atmospheric pressure of back sound intracavity to rise thereupon, and the vibrating diaphragm receives the influence that the atmospheric pressure rose in the back sound intracavity, can appear vibration asymmetric phenomenon from top to bottom, and then influences the normal work of speaker module. In order to balance the internal and external air pressure of the rear sound cavity of the loudspeaker module, the symmetry of the vibration amplitude of the vibration diaphragm is kept, and the acoustic performance is further improved, a leakage hole communicated with the rear sound cavity can be formed in the shell of the loudspeaker module, so that the aperture of the leakage hole can greatly influence the performance of the loudspeaker module and the symmetry of the vibration amplitude of the vibration diaphragm, and the leakage hole structures with various apertures need to be verified at the performance debugging stage of the loudspeaker module, and an optimal scheme is selected from the leakage hole structures.

At present, because let out the hole and directly form when injection moulding speaker module shell, that is when passing through mould injection moulding speaker module shell, get into son through the mould and form on fashioned speaker module shell and let out the hole, consequently, when carrying out the aperture verification, just need change the mould structure many times to can form out the leakage hole in different apertures on speaker mould shell. Here, since the design cycle of the mold is long, the cost is high, and the mold cannot normally produce the module housing during the design, a large amount of research and development time and research and development cost may be wasted. In addition, in the actual research and development process of speaker module, often can lead to the unable die sinking of mould because the leakage hole can not in time be stereotyped to the production of delaying speaker module shell is prepared material. It is highly desirable to provide a design that enables standardized production of speaker module housings.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a new technical solution for forming a speaker module housing, so as to facilitate the standardized production of the speaker module housing.

according to a first aspect of the invention, there is provided a standard fitting for a loudspeaker module housing comprising a fitting body having a first surface and a second surface opposite the first surface, and a leak hole provided in the fitting body, the leak hole extending through the first and second surfaces.

Optionally, the geometric center of the leak through hole coincides with the geometric center of the fitting body.

Optionally, the fitting body is cylindrical or cubic.

Optionally, the first surface of the fitting body forms a counter-sunk portion around the leakage hole for providing a damping member.

Optionally, the leakage hole is a circular hole, and the diameter range of the leakage hole is 0.2mm to 2 mm.

According to the second aspect of the invention, there is also provided a standard fitting for a loudspeaker module housing, comprising two or more standard fittings according to the first aspect of the invention, wherein the fitting body of each standard fitting has the same shape and external dimension, and the size of the leakage hole of each standard fitting is different from each other.

According to a third aspect of the present invention, there is also provided a speaker module comprising a speaker module housing, a speaker unit accommodated in the speaker module housing, the speaker module housing comprising a housing body member and the standard accessory according to the first aspect of the present invention, the housing body member having a mounting through hole adapted to the accessory body of the standard accessory, the mounting through hole communicating with a rear acoustic cavity of the speaker module; the standard fitting is fixedly mounted in the mounting through hole.

Optionally, the mounting through hole is a counter bore, and the standard fitting is fixedly mounted in a counter bore counter table.

optionally, the fitting body and the housing body member are fixedly attached together by ultrasonic welding.

Optionally, the housing body member includes a module upper shell and a module lower shell fixedly connected together, and the mounting through hole is located on the module upper shell or on the module lower shell.

The loudspeaker module shell is divided into two parts, one part is the shell body piece, the other part is the standard accessory, and the leakage hole is positioned on the standard accessory, so that the shell body piece and the standard accessory can be separately designed and manufactured, and only the installation through hole for installing the standard accessory is reserved on the shell body piece. Therefore, based on the structure, the die for forming the shell body piece can be opened normally without waiting for determining the size of the leakage hole, and after the shell body piece is formed, standard accessories matched with the size of the leakage hole can be selected according to the verification result in the performance debugging stage to be assembled to form the loudspeaker module shell, so that the production efficiency is improved, and the die opening cost is greatly reduced.

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 top view of a speaker module according to an embodiment of the present invention;

FIG. 2 is an exploded view of the speaker module shown in FIG. 1;

FIG. 3 is a schematic view of the standard fitting of FIG. 2;

3 FIG. 3 4 3 is 3 a 3 schematic 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 in 3 FIG. 31 3; 3

Fig. 5 is a partially enlarged schematic view at I in fig. 4.

Description of reference numerals:

100-a speaker module housing; 110-a housing body member;

111-module top case; 112-module lower case;

113-mounting a through hole; 1131, sinking a platform;

120-standard fittings; 121-a fitting body;

1211 — a first surface; 1212-a second surface;

1211 a-sinking table; 400-a damping member;

140-the posterior acoustic chamber; 200-a loudspeaker unit;

300-circuit board.

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, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be 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 to 5, a speaker module according to an embodiment of the present invention includes a speaker module housing 100, a speaker unit 200, a circuit board 300, and a damping member 400.

The speaker unit 200 is accommodated in the speaker module housing 100, and an inner cavity of the speaker module housing 100 is partitioned into a front acoustic cavity and a rear acoustic cavity 140 by a diaphragm of the speaker unit 200.

The speaker unit 200 may include a unit housing, a vibration assembly, and a magnetic circuit assembly. The vibration component comprises a vibrating diaphragm and a voice coil fixedly connected with the vibrating diaphragm, and the edge part of the vibrating diaphragm is fixedly connected to the edge of the shell through bonding means. The magnetic circuit component is installed on the shell, the magnetic circuit component is provided with a magnetic gap, and the voice coil is arranged in the magnetic gap so that when an audio signal with alternating current change is received, magnetic field force generated by the magnetic circuit component acts on the driving diaphragm to vibrate up and down, and then surrounding air is driven to sound.

the speaker unit 200 may be mounted in a mounting groove formed by the speaker module housing 100 through a unit housing.

The voice coil lead of the above voice coil is soldered on the corresponding pad of the circuit board 300 to connect the voice coil with the external circuit through the circuit board 300, so that the voice coil can receive the audio signal output by the external circuit.

the circuit board 300 may be an FPCB.

The speaker module housing 100 includes two parts, a housing body member 110 and a standard accessory 120.

The case body member 110 may further include a module upper case 111 and a module lower case 112 to facilitate installation of the speaker unit 200. The module upper case 111 and the module lower case 112 may be fixedly coupled together by means of, for example, adhesion, engagement, or the like.

As shown in fig. 3, the standard fitting 120 includes a fitting body 121 and a leak hole 122 provided on the fitting body 121.

The fitting body 121 has a first surface 1211 and a second surface 1212 opposite the first surface 1211, and the leakage hole 122 extends through the first surface 1211 and the second surface 1212 to form a through hole through the fitting body 121.

The fitting body 121 is a standard piece having a set shape and outer dimensions.

The fitting body 121 may be a regular shape such as a cylinder, a cube, etc. to simplify the molding process, and also to facilitate the formation of the mounting through-hole 113 on the housing body member 110 to be fitted with the fitting body 121.

In one embodiment of the present invention, the standard fitting 120 may be obtained by injection molding.

in another embodiment of the present invention, the standard fitting 120 may also be obtained by stamping.

The difference between the different standard fittings 120 is in the size of the leakage hole 122, while the shape and the outer dimensions of the fitting body are identical. Thus, the standard fittings 120 are interchangeable with each other when the standard fittings 120 are assembled with the housing body member 110 to form the speaker module housing 100.

The geometric center of the leakage hole 122 may coincide with the geometric center of the fitting body 121.

The leak hole 122 may be a circular hole, a square hole, or the like.

In embodiments where the leak hole 122 is a circular hole, its diameter is, for example, greater than or equal to 0.2mm, and less than or equal to 2 mm.

In embodiments where the fitting body 121 is a cylinder, its diameter may be 10 to 500 times the diameter of the leak hole 122. For example, the fitting body 121 has a diameter greater than or equal to 20mm and less than or equal to 100 mm.

The thickness of the fitting body 121 (i.e., the dimension in the direction of the first surface 1211 opposite to the second surface 1212) can be greater than or equal to 0.3mm, less than or equal to 1 mm.

The first surface 1211 of the fitting body 121 may form a sunken platform 1211a for disposing the damping member 400 at a portion around the leakage hole 122. Thus, when the speaker module is assembled, the damping member 400 is disposed in the sinking platform 1211a to cover the leakage hole 122, which is beneficial to unifying operation and improving the appearance of the speaker module.

The case body member 110, which may be the module upper case 111 or the module lower case 112, has a mounting through-hole 113 adapted to the fitting body 121 of the standard fitting 120, and the mounting through-hole 113 communicates with the rear acoustic chamber 140 of the speaker module, thereby enabling the rear acoustic chamber 140 to communicate with the outside through the leakage hole 122 of the standard fitting 120 mounted in the mounting through-hole 113.

The standard fitting 120 is fixedly installed in the installation through hole 113.

Further, the fixed mounting may be such that the first surface 1211 of the accessory body 121 is located on the outer surface side of the speaker module housing 110.

In one embodiment of the invention, the standard fitting 120 and the housing body member 110 may be fixedly attached together by ultrasonic welding.

In another embodiment of the present invention, the standard fitting 120 and the housing body member 110 may be fixedly attached together by adhesive means.

The mounting through-hole 113 may be a counterbore and the standard fitting 120 is located in the counterbore 1131 of the mounting through-hole 113.

Further, a fixed connection structure may be formed between the second surface 1212 of the fitting body 121 and the surface of the counter-sunk stage 1131. The fixed connection structure can be an ultrasonic welding structure, a glue fixing structure, a double-sided glue fixing structure and the like.

The damper 400 is provided on the fitting body 121 and covers the leakage hole 122.

the damping element 400 can be adhesively fixed to the fitting body 121, for example.

The damping member 400 may be a mesh or the like.

In embodiments where the first surface 1211 has a submerged platform 1211a, the damping member 400 may be disposed within the submerged platform 1211a and fixedly attached to the first surface 1211.

According to the structure of the speaker module housing 100 of the present invention, when designing a speaker module housing of a speaker module of a specific project, only the housing body member 110 needs to be designed, and the mold opening production can be performed once after the housing body member 110 is shaped, without changing the mold many times to obtain leakage holes of different sizes, so that a large amount of research and development expenses can be reduced, and the product cost can be reduced.

according to the structure of the speaker module housing 100 of the present invention, it is possible to design a standard fitting set including more than two (including two) standard fittings 120, and the difference between the different standard fittings 120 is only in the size of the leak hole to achieve interchangeability in assembly. Like this, at speaker module performance debugging stage, only need select the standard component that has the leakage hole in different apertures from the standard accessory group and combine with the shell body spare of concrete project, form different speaker module shells 100, alright verify the influence of different apertures leakage hole to speaker module performance, and then practice thrift a large amount of mould change time, obtain sufficient performance debugging time simultaneously.

According to the structure of the speaker module housing 100 of the present invention, the standard kit can be commonly used among speaker modules of different projects.

According to the structure of the speaker module housing 100 of the present invention, the housing body part 110 of the speaker module of a specific item can be opened to produce stock in advance after being shaped, and the standard part 120 is a standard part and can be used universally among different items, so that the stock is sufficient, and the occurrence of delay of the mold and the stock production of large goods due to the failure of shaping by the leak hole scheme can be effectively avoided.

The above embodiments mainly focus on differences from other embodiments, but it should be clear to those skilled in the art that the above embodiments can be used alone or in combination with each other as needed.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present 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 standard fitting (120) for a loudspeaker module housing, comprising a fitting body (121) and a leakage hole (122) provided in the fitting body (121), wherein the fitting body (121) has a first surface (1211) and a second surface (1212) opposite to the first surface (1211), the leakage hole (122) penetrates through the first surface (1211) and the second surface (1212), the fitting body is fixedly mounted in a mounting through hole (113) provided in a housing body member of the loudspeaker module housing, and a rear acoustic cavity formed by the loudspeaker module housing communicates with the outside through the leakage hole.

2. The standard fitting (120) of claim 1, wherein a geometric center of the leak hole (122) coincides with a geometric center of the fitting body (121).

3. The standard fitting (120) of claim 1, wherein the fitting body (121) is a cylinder or a cube.

4. The standard fitting (120) according to claim 1, wherein the first surface (1211) of the fitting body (121) forms a counter-sunk platform (1211a) for providing a damping member (400) in a location around the leakage hole (122).

5. Standard fitting according to any of claims 1 to 4, characterized in that the leakage hole (122) is a circular hole, the diameter of the leakage hole (122) being greater than or equal to 0.2mm and less than or equal to 2 mm.

6. Set of standard fittings for a loudspeaker module housing, comprising two or more standard fittings (120) according to any one of claims 1 to 5, the fitting body (121) of each standard fitting (120) having the same shape and outer dimensions, the size of the leakage hole (122) of each standard fitting (120) being different from each other.

7. A speaker module comprising a speaker module housing (100), and a speaker unit (200) housed in the speaker module housing (100), characterized in that the speaker module housing (100) comprises a housing body member (110) and a standard accessory (120) according to any one of claims 1 to 5, the housing body member (110) has a mounting through-hole (113) fitted with an accessory body (121) of the standard accessory (120), and the mounting through-hole (113) communicates with a rear acoustic chamber (140) of the speaker module; the standard fitting (120) is fixedly arranged in the mounting through hole (113), and a rear sound cavity formed by the loudspeaker module shell is communicated with the outside through the leakage hole.

8. The speaker module as recited in claim 7, wherein the mounting through-hole (113) is a counterbore, the standard fitting (120) being fixedly mounted in a counter-sunk platform (1131) of the counterbore (113).

9. A speaker module as claimed in claim 7, wherein the accessory body (121) and the housing body member (110) are fixedly connected together by ultrasonic welding.

10. A speaker module as claimed in claim 7, wherein the housing body member (110) comprises a module upper case (111) and a module lower case (112) fixedly coupled together, and the mounting through-hole (113) is located on the module upper case (111) or on the module lower case (112).