WO2022006995A1

WO2022006995A1 - Speaker housing and speaker module

Info

Publication number: WO2022006995A1
Application number: PCT/CN2020/103534
Authority: WO
Inventors: 杨虎虎; 朱俊杰; 张龙; 董献杰
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2020-07-09
Filing date: 2020-07-22
Publication date: 2022-01-13
Also published as: CN212936187U

Abstract

Provided in the present application are a speaker housing and a speaker module. The speaker housing comprises a first cover plate and a second cover plate. The first cover plate and the second cover plate enclose to form a receiving cavity. The receiving cavity is internally provided with a plurality of connectors and a partition piece that separates the receiving cavity into a first region and a second region. The plurality of connectors are annularly disposed on the partition piece. Two ends of each connector are connected to the first cover plate and the second cover plate, respectively. One of the first region and the second region is used for receiving a speaker, and the other of the first region and the second region is in communication with a powder filling hole formed on the speaker housing. In the described speaker housing, the plurality of connectors that are annually disposed in the circumferential direction of the partition piece are used to strengthen the strength of connection between the first cover plate and the second cover plate in the circumferential direction of the partition piece, so as to avoid welding being unstable and air leaking due to the existence of the partition piece during ultrasonic welding, which affects the sound generation of a speaker module.

Description

Speaker housing and speaker module

technical field

The present application relates to the field of electro-acoustic conversion, and in particular, to a speaker casing and a speaker module.

Background technique

In existing loudspeaker modules, sound-absorbing powder is often filled in the loudspeaker housing to improve low-frequency performance. The speaker housing is generally surrounded by two cover plates, and the speaker is separated from the sound-absorbing powder by setting a partition with air permeability in the speaker housing. In order to ensure the sealing of the partition, the cover will squeeze the partition. , There is a risk that the cover will be lifted during ultrasonic welding, resulting in weak welding and air leakage, which will affect the sound of the speaker module.

technical problem

Therefore, it is necessary to provide a speaker housing and a speaker module.

technical solutions

The purpose of the present application is to provide a speaker housing and a speaker module, so as to solve the technical problem that the cover plate is lifted up due to the existence of the spacer during ultrasonic welding.

In order to solve the above-mentioned technical problems, technical scheme one of the present application is as follows:

A loudspeaker housing includes a first cover plate and a second cover plate, the first cover plate and the second cover plate are enclosed to form a receiving cavity, and a plurality of connecting pieces are arranged in the receiving cavity and the The accommodating cavity is divided into partitions of a first area and a second area, a plurality of the connecting pieces are annularly arranged on the partitions, and two ends of the connecting pieces are respectively connected to the first cover plate and the second cover. Two cover plates are connected, one of the first area and the second area is used to accommodate a speaker, and the other of the first area and the second area is formed on the speaker housing The filling holes are connected.

In some embodiments of the speaker housing, a first end of the connector is integral with one of the first cover plate and the second cover plate, and a second end of the connector Removably connected to the other of the first cover plate and the second cover plate.

In some embodiments of the speaker housing, the detachable connection is an adhesive connection.

In some embodiments of the speaker housing, at least two of the plurality of connecting members are located on opposite sides of the partition member.

In some embodiments of the speaker housing, the number of the connecting pieces is two, which are a first connecting piece and a second connecting piece respectively.

In some embodiments of the speaker housing, the first connecting member is disposed in a wider area of the receiving cavity, the second connecting member is disposed in a narrower area of the receiving cavity, and the The first connector is closer to the partition than the second connector.

In some embodiments of the speaker housing, both the first connector and the second connector are cylindrical in shape.

In some embodiments of the loudspeaker housing, the spacer is sound absorbing cotton or a swelling agent.

In order to solve the above-mentioned technical problems, technical solution two of the present application is as follows:

A loudspeaker module includes the above-mentioned loudspeaker casing and a loudspeaker accommodated in the accommodating cavity.

In some embodiments of the speaker module, a mounting hole is formed on the first cover, the mounting hole is sleeved on one end of the speaker and the speaker is abutted on the second cover .

In some embodiments of the speaker module, the speaker module further includes a circuit board, one end of the circuit board is electrically connected to the speaker, a mounting slot is formed on the second cover, and the circuit The other end of the board is exposed in the installation groove.

beneficial effect

The beneficial effects of this application are:

The above speaker housing adopts a plurality of connecting pieces in the circumferential direction of the partition to strengthen the connection strength between the first cover plate and the second cover in the circumferential direction of the partition, so as to avoid the existence of the partition during ultrasonic welding. Welding is not firm, air leakage, affecting the sound of the speaker module.

Description of drawings

1 is a schematic structural diagram of a speaker module according to an embodiment of the present application;

Fig. 2 is A-A sectional view in Fig. 1;

Fig. 3 is B-B in Fig. 1 sectional view;

4 is a schematic structural diagram of the speaker module shown in FIG. 1 after the first cover plate is opened;

5 is a schematic structural diagram of another viewing angle after the first cover plate in the speaker module shown in FIG. 1 is opened;

Fig. 6 is the exploded schematic diagram of the speaker module shown in Fig. 1;

FIG. 7 is a schematic diagram showing the positional relationship between the first cover plate and the partition member in the speaker module shown in FIG. 1 .

Embodiments of the present invention

The present application will be further described below with reference to the accompanying drawings and embodiments.

The embodiment of the present application provides a speaker module 10 . The speaker module 10 includes a speaker housing 100 and a speaker 200 accommodated in the speaker housing 100 . The speaker housing 100 includes a first cover plate 110 and a second cover plate 120 . The first cover plate 110 and the second cover plate 120 enclose a receiving cavity. The speaker 200 is accommodated in the accommodating cavity. Specifically, the first cover plate 110 is formed with a connecting bar 111 in the circumferential direction, and the second cover plate 120 is formed with a connecting groove 121 matched with the connecting bar 111 . Ultrasonic welding is performed between the connecting bar 111 and the groove wall of the connecting groove 121 , so that the first cover plate 110 and the second cover plate 120 are surrounded to form a receiving cavity 130 . Further, the accommodating cavity 130 is provided with a partition member 300 for dividing the accommodating cavity into the first area 131 and the second area 132 . The shape of the spacer 300 can be arbitrary, and the shape of the spacer 300 can be designed according to the actual assembly of the speaker module 10 , the actual space size of the receiving cavity 130 or the improvement of the sound effect of the speaker module 10 . The spacer 300 has air permeability, and may be sound-absorbing cotton or an expansion agent. Sound-absorbing cotton is a man-made inorganic fiber. Using quartz sand, limestone, dolomite and other natural ores as the main raw materials, with some soda ash, borax and other chemical raw materials to melt into glass. In the melted state, it is blown into flocculent fine fibers by means of external force blowing, and the fibers are three-dimensionally intersected and intertwined with each other, showing many small gaps. In this embodiment, the speaker 200 is accommodated in the first area 131 , the second cover 120 is formed with a powder filling hole 124 that communicates with the second area 132 , and the sound-absorbing powder is poured into the second area 132 through the powder filling hole 124 and The speaker 200 is separated by a partition 300 . The speaker module 10 further includes a sealing cover 125 for covering the powder filling hole 124 .

Further, a plurality of connectors are arranged in the receiving cavity 130 . A plurality of connecting member rings are arranged on the partition member 300 . Two ends of the connecting piece are respectively connected with the first cover plate 110 and the second cover plate 120 . By adopting a plurality of connecting pieces in the circumferential direction of the partition member 300 , by increasing the connection area of the first cover plate 110 and the second cover plate 120 in the circumferential direction of the partition member 300 , the first cover plate 110 and the first cover plate 110 in the circumferential direction of the partition member 300 are strengthened. The strength of the connection between the second cover plates 120 can further prevent the existence of the separator 300 during ultrasonic welding, resulting in weak welding and air leakage, which affects the sound of the speaker module 10 . The connecting member can improve the clamping force of the first cover plate 110 and the second cover plate 120 to the partition member 300 , so as to prevent the partition member 300 from affecting the welding between the first cover plate 110 and the second cover plate 120 .

Further, the first end of the connecting piece is integrated with one of the first cover plate 110 and the second cover plate 120, and the second end of the connecting piece is connected with the other one of the first cover plate 110 and the second cover plate 120. A detachable connection. That is, the connector is integrally formed with one of the first cover plate 110 and the second cover plate 120 , and can be integrally formed by injection molding. Before welding the first cover plate 110 and the second cover plate 120, it is necessary to ensure that the second end is connected to the first cover plate 110/second cover plate 120 to be connected, so as to ensure that the subsequent first cover plate 110 and the second cover plate 120 can be connected. Solid welding. Specifically, the detachable connection is an adhesive connection. That is, the second end is connected to the corresponding first cover plate 110/second cover plate 120 by gluing. It can be understood that in other embodiments, the first end and the second end can be respectively connected with the first cover plate 110 and the second cover plate 120 in a detachable manner. The two cover plates 120 can be detachably connected, and the positions of the connecting pieces are not fixed. The clamping force of the first cover plate 110 and the second cover plate 120 to the separator 300 .

Further, at least two of the plurality of connectors are located on opposite sides of the partition 300 . That is, the connection area between the first cover plate 110 and the second cover plate 120 is simultaneously increased on both sides of the partition member 300 , thereby simultaneously increasing the bonding force between the first cover plate 110 and the second cover plate 120 on both sides of the partition member 300 . It can be understood that, the specific number of the connecting elements located on both sides of the partition 300 may be determined according to actual requirements, for example, the following embodiments will specifically show the case where the number of connecting elements is two. Of course, in addition to this, the number of connecting pieces located on both sides of the partition 300 can also have more composition modes, for example, it can be composed of three connecting pieces, one connecting piece is arranged on one side, and two connecting pieces are arranged on the other side. Piece.

Please refer to FIG. 1 to FIG. 7 together. In this embodiment, the number of the connecting members is two, which are the first connecting member 400 and the second connecting member 500 . The first connecting member 400 and the second connecting member 500 are respectively located on opposite sides of the partition member 300 . Both the first connecting member 400 and the second connecting member 500 are integrally connected with the first cover plate 110 , and the second ends thereof are both connected with the second cover plate 120 by means of gluing. It can be understood that in other embodiments, the first connecting member 400 and the second connecting member 500 can also be connected to the second cover plate 120 as a whole, and the second ends thereof are both connected to the first cover plate 110 by means of gluing Or, the first connector 400 is integrated with one of the first cover plate 110 and the second cover plate 120 , and the second connector 500 is integrated with the other of the first cover plate 110 and the second cover plate 120 The second end is connected to the corresponding first cover plate 110/second cover plate 120 by gluing. In addition, in addition to being connected with the corresponding first cover plate 110/second cover plate 120 by gluing, the second end can also be connected with the corresponding first cover by clamping, welding or other connection methods that can ensure the connection strength. The plate 110/second cover plate 120 is connected.

Further, the first connector 400 is arranged in a wider area of the receiving cavity 130 , the second connector 500 is arranged in a narrow area of the receiving cavity 130 , and the first connector 400 is closer to the partition than the second connector 500 300 pieces. In this embodiment, a welded body can be formed after the connecting strip 111 and the groove wall of the connecting groove 121 are welded. The shape of the area of the receiving cavity 130 is limited by the shape of the welded body. It is closer and thus can generate a larger connecting force, that is, the first cover plate 110 and the second cover plate 120 have a larger clamping force acting on the partition 300, and the welded body segment located in the circumferential direction of the wider area of the receiving cavity 130 is larger. Due to the long distance, the connecting force that can be generated is small, that is, the clamping force of the first cover plate 110 and the second cover plate 120 acting on the partition 300 is small, and there is a risk of being pushed up by the partition 300. Therefore, The connector located in the wider area of the accommodating cavity 130 , that is, the first connector 400 needs to be close to the partition 300 to ensure that the clamping force acting on the partition 300 is large enough.

Further, in this embodiment, the first connecting member 400 and the second connecting member 500 are both cylindrical. It can be understood that in other embodiments, the first connecting member 400 and the second connecting member 500 may also have other shapes, such as prisms or elliptical columns. In this embodiment, the connector is a solid structure. It can be understood that in other embodiments, the connector also has a certain cavity space to reduce the overall quality of the speaker module 10 or change the sound effect of the speaker module 10 .

Please refer to FIG. 1 , FIG. 2 , and FIGS. 4 to 7 together. The first cover plate 110 is formed with a mounting hole 112 . The mounting hole 112 is sleeved on one end 201 of the speaker 200 and the speaker 200 is abutted on the second cover plate. 120. The mounting hole 112 is matched with one end 201 of the speaker 200 , so that the one end 201 of the speaker 200 can be accommodated in the mounting hole 112 . At the same time, the circumferential dimension of one end 201 of the speaker 200 is smaller than the circumferential dimension of the main body 202 of the speaker 200 . Therefore, after the first cover 110 and the second cover 120 are welded, the mounting hole 112 can be sleeved on the one end 201 of the speaker 200 The speaker 200 is abutted on the second cover 120 to fix the speaker 200 . In this embodiment, one end 201 of the speaker 200 is exposed to the speaker housing 100 , but it can be understood that in other embodiments, the entire speaker 200 may be located in the speaker housing 100 .

Please refer to FIG. 1 , FIG. 4 to FIG. 6 together, the speaker module 10 further includes a circuit board 600 . In this embodiment, the circuit board 600 is an FPC. It can be understood that in other embodiments, the circuit board 600 may also be a PCB or an RFPC. Further, one end of the circuit board 600 is electrically connected to the speaker 200 , and the generating process of the speaker 200 is realized through an electrical signal. In this embodiment, an installation groove 122 is formed on the second cover plate 120 , and the other end of the circuit board 600 is exposed in the installation groove 122 . Specifically, the mounting slot 122 is provided with a connection post 123 , and the connection post 123 matches with the connection hole 601 on the circuit board 600 to fix the circuit board 600 . Further, a notch 140 is formed on the aforementioned welding body, and the notch 140 is used for one end of the circuit board 600 to pass through and be electrically connected to the speaker 200 . In this embodiment, the number of the connecting posts 123 is two, and the notch 140 forms a triangular distribution, which prevents the circuit board 600 from moving relative to the second cover plate 120 , thereby preventing the circuit board 600 from moving relative to the speaker 200 and causing the electrical connection to be disconnected .

In the present application, by arranging a plurality of connecting pieces in the circumferential direction of the spacer 300, the connection strength between the first cover plate 110 and the second cover plate 120 in the circumferential direction of the spacer 300 is enhanced, and the sealing performance at the spacer 300 is ensured. At the same time, the bonding force between the first cover plate 110 and the second cover plate 120 is ensured, so as to avoid weak welding and air leakage, which will affect the sound of the speaker module 10 .

The above are only the embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of the present application, but these belong to the present application. scope of protection.

Claims

A loudspeaker housing is characterized in that it includes a first cover plate and a second cover plate, the first cover plate and the second cover plate are enclosed to form a receiving cavity, and the receiving cavity is provided with a plurality of A connecting piece and a dividing piece for dividing the receiving cavity into a first area and a second area, a plurality of the connecting pieces are annularly arranged on the dividing piece, and two ends of the connecting piece are respectively connected with the first cover plate connected with the second cover plate, one of the first area and the second area is used for accommodating a speaker, and the other of the first area and the second area is formed in the The powder filling holes on the speaker shell are connected.
The speaker housing according to claim 1, wherein the first end of the connecting member is integrated with one of the first cover plate and the second cover plate, and the connecting member has a The second end is detachably connected to the other of the first cover plate and the second cover plate.
The speaker housing according to claim 2, wherein the detachable connection is an adhesive connection.
The speaker housing according to any one of claims 1 to 3, wherein at least two of the plurality of connecting members are located on opposite sides of the partition member.
The speaker housing according to claim 4, wherein the number of the connecting pieces is two, which are the first connecting piece and the second connecting piece respectively.
The speaker housing according to claim 5, wherein the first connecting member is disposed in a wider area of the receiving cavity, and the second connecting member is disposed in a narrow area of the receiving cavity , and the first connector is closer to the partition than the second connector.
The speaker housing according to claim 6, wherein the first connecting member and the second connecting member are both cylindrical.
The loudspeaker housing according to claim 1, wherein the partition is sound-absorbing cotton or an expansion agent.
A loudspeaker module is characterized in that it comprises the loudspeaker casing according to any one of claims 1 to 8 and a loudspeaker accommodated in the accommodating cavity.
The speaker module according to claim 9, wherein a mounting hole is formed on the first cover plate, the mounting hole is sleeved on one end of the speaker and the speaker is abutted on the first cover. Two cover plates.
The speaker module according to claim 10, wherein the speaker module further comprises a circuit board, one end of the circuit board is electrically connected to the speaker, and a mounting slot is formed on the second cover plate, The other end of the circuit board is exposed in the mounting groove.