WO2020103577A1

WO2020103577A1 - Loudspeaker

Info

Publication number: WO2020103577A1
Application number: PCT/CN2019/108996
Authority: WO
Inventors: 高远; 李泉儒; 李振军
Original assignee: 歌尔股份有限公司
Priority date: 2018-11-23
Filing date: 2019-09-29
Publication date: 2020-05-28
Also published as: CN109246557B; CN109246557A

Abstract

Disclosed is a loudspeaker, comprising a housing formed with a receiving cavity, and a vibration system and a magnetic circuit system accommodated in the receiving cavity. The vibration system comprises a diaphragm and a voice coil fixed with the diaphragm. The voice coil is connected to a flexible circuit board. The flexible circuit board comprises an extension extending outside the housing. The outer surface of a sidewall of the housing comprises a fixing member used for fixing the extension of the flexible circuit board to the outer surface of the sidewall of the housing. The fixing member comprises a receiving portion penetrating the upper and lower side surfaces of the fixing member. The extension of the flexible circuit board passes through the receiving portion. An end portion of the extension passes through the fixing member. The loudspeaker enables the flexible circuit board and the loudspeaker housing to be combined more tightly, avoids the warping of the flexible circuit board, effectively fixes the flexible circuit board, keeps the target shape all the time, and moreover, facilitates the mounting/dismounting operations.

Description

A speaker

Technical field

The present invention relates to the technical field of electroacoustic products, and more specifically, the present invention relates to a speaker.

Background technique

With the rapid development of technology and the widespread use of electronic products such as mobile phones, PADs, and computers, people have gradually placed higher and higher requirements on audio equipment equipped with electronic devices. As an electrical component of consumer electronic equipment, a speaker is used to complete the conversion of electrical signals and sound, and is a very important acoustic component. Its structural design requirements continue to increase. When a person skilled in the art designs a loudspeaker, in order to reduce the space occupied by the loudspeaker and improve the acoustic performance of the loudspeaker, the electrical connection between the internal circuit of the loudspeaker and the external circuit is usually achieved through a flexible circuit board. For a speaker with a flexible circuit board, the resonance phenomenon caused by sound vibration of the flexible circuit board is an important factor that affects the performance and listening of the speaker.

In the prior art, the flexible circuit board is mainly fixed by adhesive bonding with the speaker casing. Although this fixing method can suppress the vibration of the flexible circuit board to a certain extent, it also has obvious defects. With the passage of time, the colloid between the flexible circuit board and the speaker housing is prone to cracking, which makes the adhesion between the flexible circuit board and the speaker housing fail, and the flexible circuit board cannot be effectively fixed.

Therefore, in order to overcome the defects of the prior art, a new type of speaker needs to be provided.

Summary of the invention

The purpose of the present invention is to provide a loudspeaker that allows the flexible circuit board to be more tightly combined with the loudspeaker housing, avoids the warping of the flexible circuit board, effectively fixes the flexible circuit board, keeps it always in the target form, and reduces the installation workload, Make the installation work more convenient.

In order to achieve the above object, the present invention provides a speaker including a housing formed with a receiving cavity, and a vibration system and a magnetic circuit system received in the receiving cavity; the vibration system includes a diaphragm and The diaphragm is combined with a fixed voice coil; the voice coil is connected with a flexible circuit board, and the flexible circuit board includes an extension portion that extends to the outside of the case; The circuit board extension is fixed to the outer surface of the side wall of the housing. The fastener includes a receiving portion penetrating the upper and lower surfaces of the fixing member. The flexible circuit board extension passes through the receiving portion. The end of the extending portion passes through the fixing member.

In addition, a preferred solution is that the fixing member at least includes a first fixing table and a second fixing table that are located opposite to each other on both sides of the extension portion of the flexible circuit board;

A first fixing groove and a second fixing groove are respectively opened on the first fixing table and the second fixing table;

The speaker further includes a plug-in board, the plug-in board is located outside the extension portion of the flexible circuit board, and both ends of the plug-in board are inserted into the first fixing groove and the second fixing groove, respectively; The accommodating portion is formed between the first fixing platform, the second fixing platform, the side wall of the housing, and the interposer.

In addition, a preferred solution is that the fixing member includes at least a first fixing table and a second fixing table disposed on opposite sides of the extension of the flexible circuit board; the first fixing table includes a side wall formed by the housing A first fixing portion extending from the outer surface of the first fixing portion and a first bending portion formed by bending the end of the first fixing portion toward the second fixing platform;

The second fixing platform includes a second fixing portion extending from the outer surface of the side wall of the housing and a second bending portion formed by bending an end of the second fixing portion toward the first fixing platform;

The accommodating portion is formed between the first fixing platform, the second fixing platform, the first bending portion, the second bending portion, and the side wall of the housing.

In addition, preferably, the distance between the end of the first bent portion and the end of the second bent portion is smaller than the width of the extension of the flexible circuit board.

In addition, a preferred solution is that the first bending portion and the second bending portion are connected integrally to form a connecting wall;

The housing portion is formed between the side wall of the housing, the first fixing platform, the second fixing platform, and the connecting wall.

In addition, preferably, the first fixing groove penetrates the top surface of the first fixing platform, and the second fixing groove penetrates the top surface of the second fixing platform.

In addition, a preferred solution is that the housing at least includes an upper shell and a lower shell that are combined and fixed together to form the accommodating cavity;

The fixing member is formed on the outer surface of the side wall of the upper case or on the outer surface of the side wall of the lower case.

In addition, a preferred solution is that the housing includes at least an upper shell and a lower shell that are combined and fixed together to form the accommodating cavity; the first fixing platform and the second fixing platform are formed on the side wall of the upper housing And the top surface of the first fixing platform and the top surface of the second fixing platform are flush with the top surface of the upper shell.

In addition, a preferred solution is that the fixing member is integrally formed on the housing by injection molding.

In addition, a preferred solution is that the housing is a single speaker housing or a speaker module housing.

The beneficial effects of the present invention are as follows:

1. The speaker provided by the present invention is provided with a fixing member for fixing the extension portion of the flexible circuit board and the outer surface of the side wall of the housing on the side wall of the housing, so that the flexible circuit board and the side wall of the housing The outer surface is more closely combined to avoid the flexing of the flexible circuit board, and the flexible circuit board is effectively fixed so that it always maintains the target shape, and the installation workload is reduced, making the installation work more convenient.

2. The speaker provided by the present invention includes a fixing member, which is convenient for removing the flexible circuit board or adjusting the form of the flexible circuit board when the flexible circuit board needs to be replaced or deviates from the target form.

3. The fixing member of the loudspeaker provided by the present invention includes a connecting wall located outside the plug-in board. The connecting wall can prevent the interposer from falling off or loosening under the action of external friction, which affects the fixing of the flexible circuit board.

BRIEF DESCRIPTION

The specific embodiments of the present invention will be further described in detail below with reference to the drawings.

FIG. 1 shows a top view of the structure of the speaker provided by the present invention.

FIG. 2 shows an enlarged view of part A of FIG. 1.

3 shows a front view of the structure of the speaker provided by the present invention.

FIG. 4 shows a schematic diagram of the cooperation structure of the extension portion of the flexible circuit board provided in the present invention and the first fixing platform and the second fixing platform.

DESCRIPTION OF REFERENCE NUMERALS: 1. Housing; 11. Upper case; 12. Lower case; 2. Flexible circuit board extension; 3. Fixing parts; 31. First fixing stage; 32. Second fixing stage; 311. A fixing groove; 321, a second fixing groove; 4, an accommodating portion; 5, an insert plate.

detailed description

In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is obvious that these embodiments can also be implemented without these specific details.

In order to explain the present invention more clearly, the present invention will be further described below with reference to preferred embodiments and drawings. Similar parts in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present invention.

In view of the current prior art, the flexible circuit board is mainly fixed by adhesive bonding with the speaker shell. Although this kind of fixing method can suppress the vibration of the flexible circuit board to a certain extent, there are also obvious defects: with time With the passage of time, the colloid between the flexible circuit board and the speaker housing is prone to cracking, which makes the adhesion between the flexible circuit board and the speaker housing fail, and the flexible circuit board cannot be effectively fixed. The invention provides a loudspeaker, which makes the flexible circuit board and the loudspeaker shell more tightly combined, avoids the flexing of the flexible circuit board, effectively fixes the flexible circuit board, keeps the target shape always, reduces the installation workload, and makes the installation work More convenient.

Specifically, with reference to the drawings for detailed description, FIG. 1 shows a top view of the structure of the speaker provided by the present invention; FIG. 2 shows an enlarged view of part A of FIG. 1; FIG. 3 shows a front view of the structure of the speaker provided by the present invention; A schematic perspective view of a speaker provided by the present invention is shown.

In a preferred embodiment of the present invention, the speaker includes a housing formed with a receiving cavity, and a vibration system and a magnetic circuit system housed in the receiving cavity; the vibration system includes a diaphragm and A voice coil fixed in combination with the diaphragm; the voice coil is connected with a flexible circuit board, the flexible circuit board includes an extension portion extending out of the housing; the outer surface of the side wall of the housing includes a The flexible circuit board extension is fixed to the outer surface of the side wall of the housing, and the fixing member includes an accommodating portion penetrating the upper and lower surfaces of the fixing element, and the flexible circuit board extension passes through the accommodating portion The end of the extension part extends out from the fixing member. Further, the speaker may be a single speaker or an integrated speaker module, which is not limited by the present invention. The speaker module is taken as an example to describe the speaker of the present invention in detail below.

As shown in conjunction with FIGS. 1-4, a speaker module includes a housing 1 formed with a receiving cavity, and a vibration system and a magnetic circuit system housed in the receiving cavity. In this manner, the housing 1 may include an upper shell 11 and a lower shell 12 that are combined and fixed together to form the receiving cavity. The vibration system includes a diaphragm and a voice coil fixed in combination with the diaphragm, the voice coil is connected with a flexible circuit board, and the connection with an external circuit is realized through the flexible circuit board. The flexible circuit board includes an extension 2 extending outside the casing. The outer surface of the side wall of the casing 1 includes a fixing member 3 for fixing the flexible circuit board extension 2 and the outer surface of the side wall of the casing 1, the fixing member 3 includes a fixing member penetrating through the fixing member The accommodating portions 4 on the upper and lower sides of the surface, the flexible circuit board extension 2 passes through the accommodating portion 4, and the ends of the extension 2 pass through the fixing member 3. This preferred embodiment provides a structure that allows the flexible circuit board to be more tightly combined with the speaker housing 1 to avoid the flexing of the flexible circuit board and effectively fix the flexible circuit board so that it always maintains the target form. At the same time, in this embodiment The extension portion 2 of the flexible circuit board passes through the accommodating portion 4, and the end of the extension portion 2 passes through the fixing member 3. Compared with the prior art, a large amount of adhesive bonding work is reduced To reduce the installation workload and make the installation work more convenient; further, to speed up production efficiency and reduce assembly parts, the fixing member 3 is integrally formed on the speaker housing 1 by injection molding.

On the basis of the above-mentioned embodiment, a preferred solution is that the fixing member 3 at least includes a first fixing table 31 and a second fixing table 32 on opposite sides of the flexible circuit board extension 2, which are arranged oppositely. The first fixing platform 31 and the second fixing platform 32 are respectively provided with a first fixing slot 311 and a second fixing slot 321; the speaker further includes a plug-in board 5, the plug-in board 5 is located on the flexible circuit board extending The outer side of the portion 2, and the two ends of the insert plate 5 are inserted into the first fixing groove 311 and the second fixing groove 321 to fix; the first fixing platform 31, the second fixing platform 32, the housing 1 The accommodating portion 4 is formed between the side wall and the insert plate 5. The speaker provided in this preferred embodiment is provided with a plug-in board 5, which can further fix the flexible circuit board, and is also convenient for removing the flexible circuit board or adjusting the flexible circuit board when the flexible circuit board needs to be replaced or deviates from the target form form.

In addition, in some preferred embodiments, the first fixing groove 311 penetrates the top surface of the first fixing base 31, and the second fixing groove 321 penetrates the top surface of the second fixing base 32, usually Next, the first fixing groove 311 and the second fixing groove 321 do not penetrate the bottom surfaces of the first fixing table 311 and the second fixing table 321, because when the insert plate 5 is inserted into the first fixing groove 311 and the second fixing groove 321 During internal fixation, it is easy to cause the board 5 to fall off. However, those skilled in the art should understand that when there is an interference fit between the insert plate 5 and the first fixing groove 311 and the second fixing groove 321, in order to more easily install and remove the insert plate 5, the first The fixing groove 311 and the second fixing groove 321 may be provided to penetrate the bottom surfaces of the first fixing table 31 and the second fixing table 32. The present invention only provides an optimal technical solution suitable for the structure of the existing speaker module, but not for limitation.

In order to achieve the effective fixing of the flexible circuit board and keep it always in the target form, the present invention also provides another preferred embodiment, that is, the fixing member includes at least two oppositely disposed sides of the extension of the flexible circuit board A first fixing platform and a second fixing platform; the first fixing platform includes a first fixing portion extending from the outer surface of the side wall of the housing, and an end portion of the first fixing portion is bent toward the second fixing platform A first bending portion formed; the second fixing platform includes a second fixing portion extending from the outer surface of the side wall of the housing and formed by bending an end of the second fixing portion toward the first fixing platform A second bending portion; the accommodating portion is formed between the first fixing platform, the second fixing platform, the first bending portion, the second bending portion, and the side wall of the casing. Further preferably, the distance between the first bent portion and the side wall of the housing is not greater than the thickness of the flexible circuit board, and the distance between the second bent portion and the side wall of the housing is not greater than the flexible circuit board Thickness, further, in order to ensure better fixing of the flexible circuit board and the side wall of the housing, the distance between the end of the first bent portion and the end of the second bent portion is not greater than that of the flexible circuit board The width of the extension.

In order to achieve the purpose of the present invention, the present invention also provides another preferred embodiment, that is, the first bending portion and the second bending portion are connected to form an integral connection wall; the housing side wall, the first The accommodating portion is formed between the fixing table, the second fixing table and the connecting wall. This structure can effectively prevent the interposer from loosening or falling off under the action of external friction and affecting the fixing of the flexible circuit board.

It should be noted that the fixing member is formed on the outer surface of the side wall of the upper case or on the outer surface of the side wall of the lower case, which is not limited in the present invention. As shown in FIG. 3, the first fixing platform 31 and the second fixing platform 32 are formed on the outer surface of the side wall of the upper case 11, and the top surface of the first fixing platform 31 and the second fixing platform 32 The top surface is flush with the top surface of the upper shell 11. The purpose is to ensure that the flexible circuit board extension 2 directly enters the accommodating portion 4 formed between the first fixing base 31 and the second fixing base 32, and further fixes the flexible circuit board extension 2 from the left and right directions, reducing the extension of the flexible circuit board The length of the part 2 is suspended to avoid the problem of unstable circuit and easy stringing of the flexible circuit board extension 2 during use, so that the flexible circuit board cannot be effectively fixed. At the same time, this structural method keeps the bottom of the speaker flat and beautiful, easy assembly.

The above embodiment is described in detail by taking the speaker module as an example. When it is a speaker unit, the speaker unit includes a vibration system and a magnetic circuit system, and some speaker units are combined with a housing to protect the vibration system. The vibration system includes a diaphragm and a voice coil fixed in combination with the diaphragm, the voice coil is connected with a flexible circuit board, and the flexible circuit board includes an extension portion that extends outside the housing. The outer surface of the side wall of the casing includes a fixing member for fixing the extension of the flexible circuit board and the outer surface of the side wall of the casing. The fixing effect of the fixing member on the flexible circuit board and the side wall of the housing is basically the same as that in the above embodiment, so it will not be repeated here.

Obviously, the above examples of the present invention are only examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, based on the above description, they can There are other different forms of changes or changes that cannot be exhaustively listed here. Any obvious changes or changes that are derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

A speaker, including:

A housing formed with a containing cavity, and a vibration system and a magnetic circuit system contained in the containing cavity; the vibrating system includes a diaphragm and a voice coil fixed in combination with the diaphragm;

The voice coil is connected with a flexible circuit board, and the flexible circuit board includes an extension portion extending outside the housing;

The outer surface of the side wall of the casing includes a fixing member for fixing the extension portion of the flexible circuit board and the outer surface of the side wall of the casing, and the fixing member includes surfaces that penetrate the upper and lower sides of the fixing member The accommodating part, the flexible circuit board extending part passes through the accommodating part, and the end of the extending part passes through the fixing member.
The loudspeaker according to claim 1, wherein the fixing member comprises at least a first fixing platform and a second fixing platform which are located on opposite sides of the extension of the flexible circuit board;

A first fixing groove and a second fixing groove are respectively opened on the first fixing table and the second fixing table;

The speaker further includes a plug-in board, the plug-in board is located outside the extension portion of the flexible circuit board, and both ends of the plug-in board are inserted into the first fixing groove and the second fixing groove, respectively; The accommodating portion is formed between the first fixing platform, the second fixing platform, the side wall of the housing, and the interposer.
The loudspeaker according to claim 1, wherein the fixing member includes at least a first fixing table and a second fixing table disposed on opposite sides of the extension portion of the flexible circuit board; the first fixing table includes There are a first fixing portion extending from the outer surface of the side wall of the housing and a first bending portion formed by bending the end of the first fixing portion toward the second fixing platform;

The second fixing platform includes a second fixing portion extending from the outer surface of the side wall of the housing and a second bending portion formed by bending an end of the second fixing portion toward the first fixing platform;

The accommodating portion is formed between the first fixing platform, the second fixing platform, the first bending portion, the second bending portion, and the side wall of the housing.
The speaker according to claim 3, wherein the distance between the end of the first bent portion and the end of the second bent portion is smaller than the width of the extension of the flexible circuit board.
The speaker according to claim 3, wherein the first bending portion and the second bending portion are integrally connected to form a connecting wall;

The housing portion is formed between the side wall of the housing, the first fixing platform, the second fixing platform, and the connecting wall.
The speaker according to claim 2, wherein the first fixing groove penetrates the top surface of the first fixing stage, and the second fixing groove penetrates the top surface of the second fixing stage.
The loudspeaker according to claim 1, wherein the housing at least comprises an upper shell and a lower shell which are combined and fixed together to form the accommodating cavity;

The fixing member is formed on the outer surface of the side wall of the upper case or on the outer surface of the side wall of the lower case.
The loudspeaker according to claim 1, characterized in that the housing at least comprises an upper shell and a lower shell which are combined and fixed together to form the accommodating cavity; the first fixing platform and the second fixing platform are formed in The outer surface of the side wall of the upper shell, and the top surface of the first fixing platform and the top surface of the second fixing platform are flush with the top surface of the upper housing.
The speaker according to claim 1, wherein the fixing member is integrally formed on the housing by injection molding.
The loudspeaker according to claim 1, wherein the housing is a single speaker housing or a speaker module housing.