CN107241673B

CN107241673B - Loudspeaker module

Info

Publication number: CN107241673B
Application number: CN201710517936.5A
Authority: CN
Inventors: 岳召进; 强寿松
Original assignee: Weifang Geldanna Electronic Technology Co ltd
Current assignee: Weifang Geldanna Electronic Technology Co ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2022-04-26
Anticipated expiration: 2037-06-29
Also published as: CN107241673A

Abstract

The invention provides a loudspeaker module, which comprises a module shell and a loudspeaker monomer fixed in the module shell, wherein the loudspeaker monomer comprises a basin frame fixedly connected with the module shell and a vibrating diaphragm combined on the basin frame; a thickened area is arranged on the vibrating diaphragm corresponding to the position where the basin frame is combined with the module shell, and the thickened area protrudes out of the mounting plane of the basin frame; after the basin stand is fixed with the module housing, the thickened area is compressed between the basin stand and the module housing. By utilizing the invention, the thickening area of the vibrating diaphragm can be compressed in the fixing process of the basin frame and the module shell so as to realize the sealing of the single front cavity of the loudspeaker and the module shell, and the product has the advantages of simple structure, good sealing performance and low cost.

Description

Loudspeaker module

Technical Field

The invention relates to the technical field of acoustics, in particular to a loudspeaker module.

Background

At present, the consumer electronics market is continuously expanding, and a large number of mobile phones and notebook computers are widely used, but as important acoustic components in consumer electronics, sound generating devices (or speaker modules, the same applies below) inevitably receive wide attention. With the increasing demand of people for consumer electronics, the performance of sound generating devices is receiving more and more attention. In the market, higher requirements are put forward for lightening and thinning the appearance and more excellent performance of consumer electronic products such as mobile phones and tablet computers, and a sound generating device serving as an important component unit of the products is required to be improved continuously in the aspects of performance, size, safety and the like.

The sound generating device in the prior art mainly comprises a module housing and a speaker unit accommodated in an inner cavity formed by the module housing. The inner chamber that the speaker monomer formed the module shell is cut apart into preceding sound chamber and back sound chamber, and preceding sound chamber communicates with the phonate hole of speaker, and back sound chamber is sealing device. At present, the sealing mode of the speaker monomer and the housing mainly includes the following two modes:

1. the small-size speaker monomer is mainly sealed through the back sound chamber of glue realization, and the roughness of spreading surface needs to be guaranteed to this kind of sealed mode, requires than higher to the spreading tape, for guaranteeing adhesion performance, makes the sticky tape texture structure usually, the difficult management and control of rubber-coated uniformity, and the leakproofness of product can not be guaranteed.

2. The sealing of the speaker monomer with a slightly larger size and the large horn is mainly realized by using sealing foam, rubber rings and the like; however, the sealing foam is not easy to rebound after being compressed, is easy to lose efficacy after being tested at high and low temperatures, has an unsatisfactory sealing effect, and is sealed by using a rubber ring, so that the assembly is complicated and the cost is high.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a speaker module, so as to solve the problems of unsatisfactory sealing effect between a speaker unit and a housing, poor product consistency, difficult management and control, and high overall cost.

The loudspeaker module provided by the invention comprises a module shell and a loudspeaker single body fixed in the module shell, wherein the loudspeaker single body comprises a basin frame fixedly connected with the module shell and a vibrating diaphragm combined on the basin frame; wherein, a thickening area is arranged on the vibrating diaphragm corresponding to the position where the basin frame is combined with the module shell, and the thickening area protrudes out of the mounting plane of the basin frame; after the basin stand is fixed with the module housing, the thickened area is compressed between the basin stand and the module housing.

In addition, the diaphragm preferably includes a ball top located at the middle position, a corrugated portion disposed outside the ball top, and a fixing portion disposed at the outermost periphery; the fixing part is fixedly bonded with the basin frame; the plane of the basin frame and the module shell is the installation plane of the basin frame.

In addition, the preferred structure is that the basin frame is assembled with the module shell at the position corresponding to the fixing part; the thickened area is arranged on the fixed part.

In addition, the preferable structure is that a reinforcing rib is arranged on the module shell corresponding to the thickened area; an interference area of 0.3 mm-0.6 mm is arranged between one end of the reinforcing rib close to the basin frame and the top of the thickening area, and the fixing part and the thickening area are compressed within the range of 0.3-0.6 mm.

Further, it is preferable that the thickened region is a rubber edge.

In addition, it is preferable that the thickened region is provided on a part/all of the fixing portion and is integrally formed with the fixing portion.

In addition, preferably, a sink base recessed to a side away from the module case is provided on the mounting plane of the tub holder, and the fixing portion is fixed in the sink base.

Further, it is preferable that the fixing portion is compressed between the sinking platform and the reinforcing rib of the module case.

In addition, the preferred structure is that the basin frame and the module shell are fixedly connected through screw locking, hot melting or gluing.

In addition, the preferable structure is that the vibration film divides the space formed by the module shell into a front sound cavity communicated with the outside and a closed back sound cavity. According to the technical scheme, the loudspeaker module is characterized in that the thickened area is arranged on the fixing part of the outermost edge of the vibrating diaphragm, and the thickened area is compressed at the joint of the basin frame and the module shell through the matching of the thickened area and the reinforcing rib structure on the module shell, so that the effective sealing between the single front cavity and the module shell is realized.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.

Drawings

Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is a schematic structural diagram of a speaker module according to an embodiment of the invention;

fig. 2 is an enlarged view of a part of a speaker module according to an embodiment of the invention.

Wherein the reference numerals include: the module comprises a module shell 1, a reinforcing rib structure 11, a basin frame 2, a vibrating diaphragm 3, a fixing part 31, a folded ring part 32, a voice coil 4, a centering support piece 5, a locking screw 6, a washer 7, a magnet 8, T iron 9 and a rear sound cavity 10.

The same reference numbers in all figures indicate similar or corresponding features or functions.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

To describe the speaker module of the present invention in detail, embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 shows a structure of a speaker module according to an embodiment of the present invention; fig. 2 shows a partially enlarged structure of a speaker module according to an embodiment of the present invention.

As shown in fig. 1 and fig. 2, the speaker module according to the embodiment of the present invention includes a module housing 1 and a speaker unit fixed in the module housing 1, where the speaker unit includes a frame 2 fixedly connected to the module housing 1 and a diaphragm 3 accommodated in the frame 2. Specifically, the diaphragm 3 includes a spherical top portion located at the center position, a corrugated portion 32 disposed outside the spherical top portion, and a fixing portion 31 located at the outermost periphery; the diaphragm 3 is fixed with the frame 2 by 31. In a specific implementation, the fixing portions 31 may be provided as rubber edges, which are distributed in a horizontal direction.

When the product is assembled, a plane where the frame 2 is combined with the module case 1 is defined as a mounting plane of the frame 2, and the module case 1 is assembled with the frame 2 at the fixing portion 31 corresponding to the diaphragm 3. In order to improve the sealing manner of the front cavity of the conventional speaker unit, in this embodiment, a thickened region is disposed on the fixing portion 31 of the diaphragm, and when the fixing portion 31 is a rubber edge, the thickened region and the diaphragm can be integrally formed, that is, the position of the fixing portion 31 is thickened in the process of forming the diaphragm, in other words, the thickness of the fixing portion 31 is set to be greater than that of the bending ring portion 32, so that the fixing portion 31 is compressed by a certain amount in the process of assembling the speaker unit and the module housing 1, thereby improving the sealing effect of the combining position. In specific implementation, the thickened region may partially cover the fixing portion 31, or may completely cover the fixing portion 31 of the diaphragm, and the thickened region may be disposed on part or all of the fixing portion and integrally formed with the fixing portion.

It should be noted that, in the speaker module of the present embodiment, the space between the front portion of the diaphragm 3 and the module housing forms a front acoustic cavity to emit sound outwards, and the space between the rear portion of the diaphragm 3 and the module housing 1 forms a rear acoustic cavity 10, that is, the diaphragm divides the space formed by the module housing into a front acoustic cavity communicating with the outside and a closed rear acoustic cavity. Referring to fig. 1 and 2, the thickened area protrudes out of the mounting plane of the basin stand 2, a reinforcing rib structure 11 can be further arranged at a position on the module housing 1 corresponding to the thickened area, the arrangement of the reinforcing rib structure 11 can increase the contact area between the module housing 1 and the fixing portion 31, so that the module housing 1 can effectively compress the fixing portion, or the contact size between the module housing 1 and the rubber edge 31 is increased on the basis of the existing module housing 1, and the rubber edge 31 is compressed between the sinking platform and the reinforcing rib structure 11.

In addition, an interference zone is arranged between the reinforcing rib structure 11 and the thickened area, and the interference zone can be specifically arranged between one end of the reinforcing rib structure 11 close to the basin stand 2 and the top of the thickened area. The vertical thickness range of the interference area is 0.3 mm-0.6 mm, when the basin frame 2 is assembled with the module shell 1, the sealing between the front sound cavity and the rear sound cavity of the speaker monomer is realized through the self compression (compression within the range of the interference area) of the fixing part 31 and the thickened area, the assembly is simple, and the cost is low.

In the speaker module of the present invention, the compression height of the fixing portion 31 is set to be 0.3mm to 0.6mm, so as to ensure that the compressed fixing portion 31 can effectively seal the gap between the diaphragm 3 and the module housing 1, and ensure the sealing effect between the front acoustic cavity and the rear acoustic cavity of the speaker unit.

In one embodiment of the invention, a sinking platform which is recessed towards one side far away from the module shell 1 is arranged on the mounting surface of the basin frame 2 combined with the module shell 1, the fixing part 31 is fixed in the sinking platform, the thickness of the fixing part 31 protrudes out of the sinking platform, after the fixing part 31 is fixed on the sinking platform, the height of the rubber edge 31 protrudes out of the mounting surface of the basin frame 2, and the mounting surface of the basin frame 2, namely the contact surface of the basin frame 2 and the module shell 1 at the position close to the fixing part 31; in other words, the top surface of the fixing part 31 located in the sinking platform is higher than the mounting surface of the tub 2, so that the protruding part of the fixing part 31 can be compressed by the module case 1 when the tub 2 is assembled with the module case 1. Wherein, the distance d in fig. 2 represents the compressible height (i.e. the interference area) to the rubber edge when the basin frame 2 is matched with the module housing 1, and the range of d is 0.3 mm-0.6 mm.

In another embodiment of the present invention, the basin stand 2 and the module housing 1 can be fixed by a locking screw 6, or can be fixed by hot melting or gluing.

The loudspeaker module of the invention also comprises a centering support piece 5 with an annular structure, a voice coil framework connected with the centering support piece 5 and a voice coil 4 combined on the voice coil framework; wherein, the outer edge of the centering support piece 5 is fixed on the basin frame 2, and the inner edge of the centering support piece 5 is fixed on the voice coil framework.

Further, the loudspeaker unit also comprises a magnetic circuit component accommodated in the basin frame 2; the magnetic circuit assembly comprises a T iron 9, a magnet 8 fixed on the T iron 9 and a washer 7 fixed on one side, far away from the T iron 9, of the magnet 8; wherein, T iron 9 includes the bottom and sets up the stand in bottom central point, forms the magnetic gap between magnet 8, washer 7 and the stand, and voice coil 4 hangs and establishes in the magnetic gap. In order to ensure the concentricity of the loudspeaker module, the vertical column, the magnet 8, the washer 7 and the voice coil 4 are positioned on the same straight line so as to improve the overall stability of the magnetic circuit component and the acoustic performance of the loudspeaker monomer.

In addition, the loudspeaker monomer of the invention also comprises an electric connector (not shown in the figure) which is fixed on the frame 2 and used for connecting the internal and external circuits of the loudspeaker monomer, a lead wire of the voice coil 4 extends to the electric connector and is conducted with the electric connector, or a conductive piece such as conductive adhesive is arranged on the centering support piece 5, and the two ends of the conductive piece are respectively conducted with the electric connector and the lead wire of the voice coil 4, thereby realizing the connection of the voice coil 4 and the electric connector through the centering support piece 5, and realizing the conduction of the internal and external circuits of the loudspeaker monomer when the electric connector is conducted with a terminal equipment pad.

According to the loudspeaker module provided by the embodiment of the invention, the rubber edge at the outermost periphery of the vibrating diaphragm is thickened, so that the height of the rubber edge protrudes out of the installation surface of the basin frame and the module shell, when the basin frame and the module shell are assembled, the rubber edge is highly interfered by the module shell, the sealing between the front sound cavity and the rear sound cavity of the loudspeaker monomer can be realized, and the loudspeaker module has the advantages of simple structure, good sealing effect, low cost and easiness in operation.

The loudspeaker module proposed according to the invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the speaker module set forth above without departing from the spirit of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.

Claims

1. A loudspeaker module comprises a module shell and a loudspeaker single body fixed in the module shell, wherein the loudspeaker single body comprises a basin frame fixedly connected with the module shell and a vibrating diaphragm combined on the basin frame; it is characterized in that the preparation method is characterized in that,

the vibrating diaphragm comprises a ball top positioned in the middle, a corrugated ring part arranged on the outer side of the ball top and a fixing part arranged on the outermost periphery;

a thickened area is arranged on the vibrating diaphragm corresponding to the position where the basin frame is combined with the module shell, the thickened area protrudes out of the mounting plane of the basin frame, and the thickened area and the fixed part are of an integrally formed structure;

after the basin stand and the module shell are fixed, the thickened area is compressed between the basin stand and the module shell; and the number of the first and second electrodes,

a reinforcing rib is arranged on the module shell corresponding to the thickened area;

an interference area of 0.3 mm-0.6 mm is arranged between one end of the reinforcing rib close to the basin frame and the top of the thickening area, and the fixing portion and the thickening area are compressed within the range of 0.3 mm-0.6 mm.

2. The speaker module as recited in claim 1,

the fixing part is fixedly bonded with the basin frame;

the plane of the basin frame and the module shell in matched and combined mode is the installation plane of the basin frame.

3. The speaker module as claimed in claim 2, wherein:

the basin stand and the module shell are assembled at the position corresponding to the fixing part;

the thickened area is arranged on the fixing part.

4. The speaker module of claim 1, wherein:

the thickened area is a rubber edge.

5. The speaker module of claim 4, wherein: part/all of the thickened region is disposed on the fixing portion.

6. The speaker module as recited in claim 1,

the fixing part is fixed in the sinking platform.

7. The speaker module as recited in claim 6,

the fixing portion is compressed between the sinking platform and the reinforcing rib of the module housing.

8. The speaker module as claimed in any one of claims 1 to 7,

the basin frame and the module shell are fixedly connected through screw locking, hot melting or gluing.

9. The speaker module as claimed in any one of claims 1 to 7,

the vibrating diaphragm divides the space formed by the module shell into a front sound cavity and a closed rear sound cavity which are communicated with the outside.