WO2021120916A1

WO2021120916A1 - Sound production apparatus and electronic terminal

Info

Publication number: WO2021120916A1
Application number: PCT/CN2020/126925
Authority: WO
Inventors: 李承伟; 张庆一; 陈萌
Original assignee: 歌尔股份有限公司
Priority date: 2019-12-20
Filing date: 2020-11-06
Publication date: 2021-06-24
Also published as: CN111182424A

Abstract

Disclosed is a sound production apparatus, comprising: a housing assembly, which is configured to implement a connection between a voice coil and an external circuit, and comprises a conductive piece and a housing, the conductive piece being integrally formed with the housing; the voice coil. An accommodating space is formed inside the housing assembly, and the inside of the accommodating space is provided with the voice coil. The conductive piece comprises a first conductive portion, a second conductive portion, and a connecting wire which is respectively fixedly connected to the first conductive portion and the second conductive portion. One end of the conductive piece is fixedly connected to the voice coil, and the other end is fixedly connected to the external circuit. The housing and the conductive piece in the sound production apparatus are integrally formed to form the housing assembly, thereby reducing the assembly difficulty of the sound production apparatus.

Description

Sound generating device and electronic terminal

Technical field

The present invention relates to the technical field of electro-acoustic conversion, in particular to a sound generating device and an electronic terminal.

Background technique

The sounding device is provided with pads and connecting wires to realize the conduction between the sounding device and the external circuit.

However, in the prior art, the pads and connecting wires of the sound emitting device are respectively arranged in the sound emitting device in sequence, and additional positioning members are needed to realize the fixation of the pads and connecting wires. When the soldering pad and the connecting wire are separately arranged in the sounding device and then welding the two, it is easy to burn the shell, and the assembly relationship of the sounding device is complicated, and the assembly efficiency is reduced.

In view of the above technical problems, the present invention provides a new type of sound generating device and electronic terminal.

Summary of the invention

An object of the present invention is to provide a sounding device and an electronic terminal, so as to solve the technical problem that the sounding device in the prior art is difficult to assemble and the casing is easily burned.

According to the first aspect of the present invention, a sound generating device is provided. The sound generating device includes:

A housing assembly configured to realize the communication between the voice coil and the external circuit;

The housing assembly includes a conductive member and a housing, and the conductive member and the housing are integrally formed;

A voice coil, an accommodating space is formed in the housing assembly, and the voice coil is arranged in the accommodating space;

The conductive member includes a first conductive portion, a second conductive portion, and a connecting wire fixedly connected to the first conductive portion and the second conductive portion, respectively;

One end of the conductive member is fixedly connected to the voice coil, and the other end is fixedly connected to an external circuit.

Optionally, the connecting wire is a brocade wire.

Optionally, there are two conductive members on the housing assembly; the voice coil has a first lead and a second lead;

The first lead and the second lead are respectively fixedly connected to the first conductive parts of the two conductive parts.

Optionally, the conductive element and the housing are integrally formed by injection molding.

Optionally, the first conductive portion is a first pad, and the second conductive portion is a second pad; both ends of the connecting wire are respectively welded and fixed to the first pad and the second pad .

Optionally, a plurality of placement areas are formed on the housing assembly, and the first conductive portion and the second conductive portion are respectively provided in the placement areas; the second conductive portion protrudes outward from the placement area. The placement area.

Optionally, the connecting line is arranged along the side wall of the housing.

Optionally, the first conductive portion has a sheet-like structure;

The second conductive part has a fixing part and a connecting part, the fixing part is configured to fix the connecting wire; the connecting part is configured to be connected to an external circuit.

Optionally, the connecting portion is in the shape of a hook.

According to another aspect of the present invention, an electronic terminal is provided. The electronic terminal includes the above-mentioned sound emitting device.

The beneficial effects of the present invention: the housing and the conductive part of the sound generating device of the present invention are integrally formed, which avoids the risk of mounting pads and connecting wires in the sound generating device in the prior art, which may easily burn the housing. The present invention reduces the risk of sound generation. Difficulty in assembling the device.

Through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear.

Description of the drawings

The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present invention, and together with the description are used to explain the principle of the present invention.

Fig. 1 is an exploded view of the structure of the sound generating device of the present invention.

Figures 2 to 3 show the structure diagrams of the conductive element of the present invention.

Figure 4 shows the structure of the casing of the present invention.

Detailed ways

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

The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiment may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.

According to an embodiment of the present invention, a sound generating device is provided. 1 to 2, the sound generating device includes:

A housing assembly 101 configured to realize the communication between the voice coil and an external circuit;

The housing assembly 101 includes a conductive member and a housing. The conductive member and the housing are integrally formed to form the housing assembly 101; for example, the conductive member and the housing may be injection molded or stamped. The housing assembly 101 is formed in a similar manner.

A voice coil, an accommodating space is formed in the housing assembly 101, and the voice coil 1052 is disposed in the accommodating space;

For example, the housing may include an upper shell 103, a middle shell and a lower shell 102, wherein the upper shell 103, the middle shell and the lower shell 102 are enclosed to form an accommodating space. When the conductive element and the housing are injection molded to form the housing assembly 101, the conductive element can be injection molded on any one of the upper, middle, and lower housings, or can be injection molded on multiple housing components. Conductive parts. The present invention takes as an example the injection of conductive parts onto the middle shell. Therefore, the middle shell and the conductive parts are integrally formed to form the shell assembly 101101

The conductive member includes a first conductive portion and a second conductive portion. For ease of description, in this embodiment, the first conductive portion is the first pad 201, and the second conductive portion is the second pad 202. The first pad 201 and the second pad 202 are respectively fixedly connected to the connecting wire 203;

One end of the conductive member is fixedly connected to the voice coil 1052, and the other end is fixedly connected to an external circuit.

In this example, the housing and conductive parts are integrally formed to form the housing assembly 101. During the assembly process, the housing assembly 101 is an integral structure and other parts of the sounding device to be assembled; this example and the prior art need to use additional positioning parts separately Compared with the fixing of the housing by fixing the pad and the connecting wire inside the sounding device respectively, the present invention simplifies the internal structure of the sounding device, reduces the difficulty of assembling the sounding device and reduces the weight of the sounding device itself.

On the other hand, in the prior art, when the bonding pads and connecting wires are separately arranged inside the sounding device, additional space in the back cavity of the sounding device is occupied; in this example, the conductive element is an integrated structure, and it can be directly used with the housing The housing assembly 101 is formed in an integrated manner, which does not need to occupy extra space in the back cavity to fix the connecting wires and pads, which saves the space in the back cavity, and can increase the volume of the back cavity by 8% compared with the prior art. The volume of the lower back cavity can be used to install sound-absorbing parts to improve the acoustic performance of the sound device.

On the other hand, in the prior art, when the connecting wires and the pads are welded separately inside the sound generating device, for example, when the pads are first fixed on the housing, and then the connecting wires are welded on the pads, there may be multiple burns to the housing. Risk, this example first welds the connecting wire and the pad to form the conductive part, and then the conductive part and the shell are injection-molded to form the shell assembly 101, which avoids welding and fixing on the shell, and also avoids the welding connection There is a risk of scalding the shell when threading.

In an optional embodiment, the connecting wire 203 is a brocade wire. Jinsi thread has the characteristics of high strength, good durability and long service life. This example avoids the phenomenon that the connecting wire is easily broken when the first pad 201 and the second pad 202 are welded and fixed, and the service life of the conductive member is increased, thereby increasing the service life of the sound generating device.

In an optional embodiment, as shown in FIGS. 1 and 3, the housing assembly 101 has two conductive members; the voice coil 1052 has a first lead 1053a and a second lead 1053b; for example

The voice coil 1052 can be formed by winding enameled wire layer by layer, and the whole can be round, rectangular or racetrack-shaped. In this example, the voice coil 1052 is rectangular.

The two leads of the voice coil 1052 are a first lead 1053a and a second lead 1053b, respectively. The first lead 1053a and the second lead 1053b are located at opposite ends of the voice coil 1052, respectively.

For example, when the voice coil 1052 has a rectangular structure, its two leads can be located on the two short sides or on the long sides of the voice coil 1052, respectively. The structure of this voice coil 1052 belongs to the common knowledge of those skilled in the art, and will not be described in detail here.

For example, the sound generating device includes a vibrating component 105, wherein the vibrating component 105 includes a voice coil 1052 and a diaphragm 1051, wherein the diaphragm 1051 includes a vibrating part located in the middle, a connecting part located at the edge for connection, and a vibrating part and the connecting part. Between the fold ring part. The structure of such a diaphragm 1051 belongs to the common knowledge of those skilled in the art. The voice coil 1052 is connected to the position of the vibrating part of the diaphragm 1051.

The first lead 1053a and the second lead 1053b are respectively fixedly connected to the first pads of the two conductive members.

For example, two conductive parts are injected on the shell to form the shell assembly 101. A conductive member includes a first pad 201a, a second pad 202a, and a connecting wire 203a. Both ends of the connecting wire 203a are respectively welded and fixed to the first pad 201a and the second pad 202a to form the conductive member.

The other conductive member includes a first pad 201b, a second pad 202b, and a connecting wire 203b. Both ends of the connecting wire 203b are respectively welded and fixed to the first pad 201b and the second pad 202b to form the conductive member.

The first lead 1053a is fixed to the first pad 201a, and the second lead 1053b is fixed to the first pad 201b; the second pad 202a and the second pad 202b are respectively connected to the external circuit, so the voice coil 1053, the two The conductive element and the external circuit form a closed loop.

In this example, the conductive element is an integral structure and is injection molded on the housing to form the housing assembly 101, which avoids the need for multiple welding inside the sound generating device to realize the conduction between the voice coil and the external circuit. This example reduces the number of welding times, improves the assembly efficiency of the sound generating device, and at the same time avoids the need to occupy the back sound cavity cavity when separately setting pads and connecting wires, increases the space for arranging sound-absorbing components, and improves the acoustic performance of the sound generating device.

In an optional embodiment, the conductive member and the housing are integrally formed by injection molding to form the housing assembly 101. For example, the conductive member includes a first pad 201, a second pad 202, and a connecting wire 203 fixedly connected to the first pad 201 and the second pad 202. In this example, the connecting wire 203 is set on the first pad 201. The conductive element is formed on the second pad 202, and then the conductive element and the housing are injection molded to form an integrated housing assembly 101; for example, the conductive element can be used as an insert and injection molded with the housing, in this example There is no need to separately solder the first pad 201 and the second pad 202 to the shell. On the one hand, it improves the appearance of the shell, on the other hand, it reduces the difficulty of assembling the sound device and improves the production of the sound device. effectiveness.

In an optional embodiment, as shown in FIG. 2, the two ends of the connecting wire 203 are respectively welded and fixed to the first pad 201 and the second pad 202. This example improves the robustness and reliability of the connection between the connecting wire 203 and the first pad 201 and the second pad 202.

In an optional embodiment, as shown in FIG. 4, the housing assembly 101 is formed with a plurality of placement areas A, and the first pads 201 and the second pads 202 are respectively provided in the placement areas. In; The second pad 202 protrudes outward from the placement area.

For example, the conductive member may be injection molded on the upper shell 103, the middle shell or the lower shell 102. In this example, injection molding of a conductive element on the middle shell is taken as an example, and the conductive element and the middle shell are integrally formed to form the housing assembly 101.

For example, in the injection molding process, the housing assembly 101 forms a plurality of placement areas A, and the first pad 201 and the second pad 202 can be embedded in the placement area A to improve the utilization of the space inside the housing. For example, a recessed groove may be formed on the middle shell, and the recessed groove is the placement area, and the first pad 201 and the second pad 202 may be embedded in the recessed groove.

Or part of the side walls of the middle shell protrude inward, and the protruding area is formed with a planar placing platform. As shown in FIG. 4, the second pad 202 is fixedly arranged on the planar placing platform.

The second pad 202 protrudes outward from the placement area. Since the second pad 202 is configured to connect with an external circuit, it is convenient when the second pad 202 protrudes outward from the placement area. Connection with external circuits. For example, the part where the second pad 202 is connected to the external circuit may extend out of the placement area.

In an optional embodiment, the connecting line 203 is arranged along the side wall of the housing. For example, the connecting line 203 can be deformed, and the connecting line 203 can be bent into an L-shape or U-shape to be suitable for the corner formed by the side wall and the bottom wall of the housing; at the same time, when the connecting line 203 is along the side of the housing When the wall is installed, the volume of the rear acoustic cavity of the sounding device can be saved, and as many sound-absorbing parts are arranged in the rear acoustic cavity structure as possible to improve the bass effect of the sounding device; on the other hand, when the connecting line 203 is along the side of the housing When the wall is installed, the height of the sounding device can be reduced to a certain extent, so that the sounding device is more in line with the design concept of lightness and miniaturization.

In an optional embodiment, as shown in FIG. 2, the first pad 201 has a sheet-like structure; on the one hand, the first pad 201 needs to be fixed at one end of the connecting line 203, and on the other hand, it needs to be fixed. For the lead of the voice coil, when the first pad 201 is arranged in a sheet structure, the fixed contact area between the connecting wire and the lead can be increased, which facilitates the welding of the connecting wire and the lead, and also improves the reliability and firmness of the fixing.

The second pad 202 has a fixing portion 2021 and a connecting portion 2022. The fixing portion 2021 is configured to fix the connecting wire 203; the connecting portion 2022 is configured to be connected to an external circuit. For example, the fixing portion 2021 and the connecting portion 2022 are an integral structure, wherein the fixing portion 2021 is injection molded on the housing, and the connecting portion 2022 protrudes from the housing or extends out of the housing to facilitate the electrical connection between the external circuit and the connecting portion.

For example, as shown in FIG. 2, the connecting portion 2022 is in the shape of a hook. The fixing portion 2021 and the connecting portion 2022 are an integral structure to form the second pad 202, and the second pad 202 has a T-like structure; for example, the connecting portion 2022 extends along one end of the fixing portion 2021, and The extension direction is at a predetermined angle with the plane where the fixing portion 2021 is located. In this example, the extension direction is perpendicular to the plane where the fixing portion 2021 is located. This example facilitates the electrical connection between the external circuit and the second pad 202.

According to another aspect of the present invention, an electronic terminal is provided. The electronic terminal includes the above-mentioned sound emitting device. For example, the electronic terminal may further include a terminal housing, and the sound generating device is provided on the terminal housing. When the sound generating device is applied to an electronic terminal, on the one hand, the acoustic performance of the electronic terminal is improved, and on the other hand, the weight and volume of the electronic terminal are reduced.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims

A sounding device, characterized in that the sounding device comprises:

A housing assembly configured to realize the communication between the voice coil and the external circuit;

The housing assembly includes a conductive member and a housing, and the conductive member and the housing are integrally formed;

A voice coil, an accommodating space is formed in the housing assembly, and the voice coil is arranged in the accommodating space;

The conductive member includes a first conductive portion, a second conductive portion, and a connecting wire fixedly connected to the first conductive portion and the second conductive portion, respectively;

One end of the conductive member is fixedly connected to the voice coil, and the other end is fixedly connected to an external circuit.
The sound generating device according to claim 1, wherein the connecting wire is a brocade wire.
The sound emitting device according to claim 1, wherein the housing assembly has two conductive members; the voice coil has a first lead and a second lead;

The first lead and the second lead are respectively fixedly connected to the first conductive parts of the two conductive parts.
The sound generating device according to claim 1, wherein the conductive member and the housing are integrally formed by injection molding.
The sound emitting device according to claim 1, wherein the first conductive portion is a first pad, and the second conductive portion is a second pad;

Both ends of the connecting wire are respectively welded and fixed to the first pad and the second pad.
The sounding device according to claim 1, wherein a plurality of placement areas are formed on the housing assembly, and the first conductive portion and the second conductive portion are respectively provided in the placement area; The two conductive parts protrude outward from the placement area.
The sound device according to claim 1, wherein the connecting line is arranged along the side wall of the housing.
The sound device according to any one of claims 1 to 7, wherein the first conductive part has a sheet-like structure;

The second conductive part has a fixing part and a connecting part, the fixing part is configured to fix the connecting wire; the connecting part is configured to be connected to an external circuit.
8. The sound generating device according to claim 8, wherein the connecting portion is in the shape of a hook.
An electronic terminal, characterized in that the electronic terminal comprises the sound emitting device according to any one of claims 1-9.