WO2022088279A1

WO2022088279A1 - Speaker and electronic terminal

Info

Publication number: WO2022088279A1
Application number: PCT/CN2020/128927
Authority: WO
Inventors: 祝赟; 印兆宇; 吴军
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: 2020-10-30
Filing date: 2020-11-16
Publication date: 2022-05-05
Also published as: CN213661940U

Abstract

A speaker and an electronic terminal, comprising a basket provided with an accommodating space, a vibration system fixed on the basket, a magnetic circuit system used for driving the vibration system, and a flexible circuit board used for electrically connecting with the vibration system. The basket comprises a first steel ring and a second steel ring, the first steel ring and the second steel ring enclosing the accommodating space, and the first steel ring and the second steel ring being at least partially overlappingly arranged and forming a welding portion used for welding with the flexible circuit board. Thus, the area of the welding surface on the welding portion formed is therefore larger than the area of a single steel ring in contact with the flexible circuit board, and thus the area that can be welded to the flexible circuit board is increased. Therefore, the flexible circuit board can be stably welded on the first steel ring and the second steel ring and the rate of dry joints is greatly reduced, thus causing the sound quality of the loudspeaker to be more stable.

Description

Speakers and Electronic Terminals

technical field

The present application relates to the field of electro-acoustics, and in particular, to a speaker and an electronic terminal.

Background technique

In today's mobile Internet era, the number of intelligent mobile terminal devices is constantly increasing, and the requirements for mobile terminals are getting higher and higher, one of which is the requirement for high-quality sound quality functions.

technical problem

Some speakers in the related art use a steel ring instead of a basin frame, and the flexible circuit board is usually welded on the steel ring, but the contact area between the steel ring and the welding part of the flexible circuit board is too small, which leads to The ring welding is not firm, and the virtual welding between the flexible circuit board and the steel ring occurs from time to time, resulting in unstable sound quality.

Therefore, it is necessary to provide a new type of speaker and electronic terminal to solve the above problems.

technical solutions

The purpose of this application is to provide a loudspeaker and an electronic terminal, the flexible circuit board of the loudspeaker is more firmly welded and the sound quality is more stable.

The technical solution of the present application is as follows: a loudspeaker, comprising a basin frame having a receiving space, a vibration system fixed on the basin frame, a magnetic circuit system for driving the vibration system, and a power circuit system for electrically connecting with the vibration system connected flexible circuit boards;

The basin frame includes a first steel ring and a second steel ring, the first steel ring and the second steel ring are enclosed to form the receiving space, and the first steel ring and the second steel ring are at least A welding portion for welding with the flexible circuit board is partially overlapped and formed.

As an embodiment of the present application, the basin frame includes two oppositely disposed first steel rings and two oppositely disposed second steel rings, two first steel rings and two opposite The second steel rings are alternately connected and enclosed to form the accommodating space, and the welded portion is formed by overlapping the connection between the first steel ring and the second steel ring.

As an embodiment of the present application, the first steel ring includes a first rod portion and a first overlapping portion formed by bending and extending from both ends of the first rod portion, and the second steel ring includes a second rod and a second overlapping portion corresponding to the first overlapping portion formed by bending and extending from both ends of the second rod portion, the first rod portion is perpendicular to the second rod portion, and the first rod portion is perpendicular to the second rod portion. An overlapping portion and the second overlapping portion are arranged to overlap and form the welding portion.

As an embodiment of the present application, the vibration system includes a vibrating membrane for sounding, and the vibrating membrane is fixed on the first steel ring and the second steel ring.

As an embodiment of the present application, the diaphragm includes a ring portion, a first fixing portion extending from the outer periphery of the ring portion, and a spherical top portion extending from the inner periphery of the ring portion. The first steel ring and the second steel ring are respectively abutted on the first fixing portion.

As an embodiment of the present application, the diaphragm further includes a limiting portion formed by bending and extending from the outer peripheral edge of the first fixing portion toward the first steel ring and the second steel ring. The sides of a steel ring and the second steel ring away from the top of the ball are respectively abutted on the limiting portion.

As an embodiment of the present application, the magnetic circuit system includes a magnetic yoke, and the magnetic yoke is fixed on the first steel ring and/or the second steel ring.

As an embodiment of the present application, the magnetic yoke includes a second fixing portion and abutting portions located on both sides of the second fixing portion, and the second steel ring is provided with a second fixing portion adapted for use with the second fixing portion. The fixing groove of the second fixing part is installed, and the abutting part abuts on the side of the second steel ring facing the receiving space.

As an embodiment of the present application, the flexible circuit boards are respectively abutted on the first steel ring and the second steel ring, and the flexible circuit boards are distributed on the magnetic yoke and face the first steel ring. Both sides of the direction of the steel ring.

Another technical solution of the present application is as follows: an electronic terminal, comprising a terminal body and the speaker as described in any of the above embodiments, the speaker being arranged on the terminal body.

beneficial effect

The beneficial effect of the present application is that: the basin frame includes a first steel ring and a second steel ring, the first steel ring and the second steel ring are enclosed to form a receiving space, because the first steel ring and the second steel ring are at least partially overlapped and arranged to The welding part for welding with the flexible circuit board is formed, so that the area of the welding surface on the formed welding part is larger than the contact area of a single steel ring and the flexible circuit board, thereby increasing the area that can be welded with the flexible circuit board, thereby making the The flexible circuit board can be stably welded on the first steel ring and the second steel ring, which greatly reduces the probability of virtual welding, thereby making the sound quality of the speaker more stable.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a speaker according to an embodiment of the application;

Fig. 2 is the exploded schematic diagram of the loudspeaker in Fig. 1;

Fig. 3 is the structural representation of the basin frame in Fig. 1;

Fig. 4 is the front view of the basin frame in Fig. 1;

Fig. 5 is the sectional view at A-A place in Fig. 4;

6 is a schematic diagram of an overall structure of an electronic terminal according to an embodiment of the application;

1. Loudspeaker; 2. Terminal body; 100, Basin frame; 101, Receiving space; 110, First steel ring; 111, First rod part; 112, First overlapping part; 120, Second steel ring; 121, No. 1 Two rod parts; 122, the second overlapping part; 123, the fixing groove; 130, the welding part; 131, the welding surface; 200, the vibration system; 210, the diaphragm; 211, the ring part; 212, the first fixing part; 213 300, magnetic circuit system; 310, magnetic yoke; 311, second fixing part; 312, abutting part; 400, flexible circuit board; 410, pad.

Embodiments of the present invention

To further illustrate the various embodiments, the present application provides accompanying drawings. These drawings are part of the disclosure content of the present application, and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant description of the specification to explain the operation principles of the embodiments. With reference to these contents, one of ordinary skill in the art will understand other possible implementations and advantages of the present application. Components in the figures are not drawn to scale, and similar component symbols are often used to represent similar components.

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

Referring to FIGS. 1-5 , an embodiment of the present application provides a loudspeaker 1 . The loudspeaker 1 in this embodiment includes a basin frame 100 having a receiving space 101 , a vibration system 200 fixed on the basin frame 100 for The magnetic circuit system 300 for driving the vibration system 200 and the flexible circuit board 400 for electrical connection with the vibration system 200 are provided.

It should be noted that the part of the vibration system 200 and the part of the magnetic circuit system 300 in this embodiment are not clearly drawn because they do not involve the invention point, and 200 ( 300 ) in the drawings not only refers to a part of the vibration system 200 The structure also refers to a part of the structure of the magnetic circuit system 300 .

1-5, in one embodiment, the basin frame 100 includes a first steel ring 110 and a second steel ring 120, the first steel ring 110 and the second steel ring 120 are enclosed to form a receiving space 101, the first steel ring 110 and the second steel ring 120 The steel ring 110 and the second steel ring 120 are at least partially overlapped and formed to form the welding portion 130 for welding with the flexible circuit board 400 . Since the first steel ring 110 and the second steel ring 120 are at least partially overlapped, the welding portion 130 is formed. The area of the welding surface 131 is larger than the area of the single steel ring in contact with the flexible circuit board 400, thereby increasing the area that can be welded with the flexible circuit board 400, so that the flexible circuit board 400 can be stably welded between the first steel ring 110 and the flexible circuit board 400. On the second steel ring 120, the probability of virtual welding is greatly reduced, thereby making the sound quality of the speaker 1 more stable.

Preferably, the first steel ring 110 and the second steel ring 120 are at least partially overlapped in the horizontal direction, and the welding portion 130 has a welding surface 131 parallel to the horizontal plane and used for welding with the flexible circuit board 400 .

2-5, further, the basin frame 100 includes two oppositely arranged first steel rings 110 and two oppositely arranged second steel rings 120, two first steel rings 110 and two second steel rings The rings 120 are alternately connected and enclosed to form the receiving space 101 , and the joints of the first steel ring 110 and the second steel ring 120 are overlapped to form the above-mentioned welding portion 130 . Since the welding portion 130 is formed at the connection between the first steel ring 110 and the second steel ring 120 , and only at the connection between the first steel ring 110 and the second steel ring 120 , the first steel ring 110 and the second steel ring 120 The width of the first steel ring 110 and the second steel ring 120 is larger, which makes it easier to firmly fix the flexible circuit board 400 on the first steel ring 110 and the second steel ring 120, and the width of other positions of the first steel ring 110 and the second steel ring 120 The widths of the rings are uniform, thereby improving the rational utilization of space by the first steel ring 110 and the second steel ring 120 .

Please refer to FIGS. 3 and 5 , further, the first steel ring 110 includes a first rod portion 111 and a first overlapping portion 112 formed by bending and extending from both ends of the first rod portion 111 , and the second steel ring 120 includes a first rod portion 111 . The two rod parts 121 and the second overlapping parts 122 formed by bending and extending from the two ends of the second rod part 121 and corresponding to the first overlapping part 112 respectively. The first rod part 111 is perpendicular to the second rod part 121, and the first overlapping part The portion 112 and the second overlapping portion 122 are arranged to overlap and form the welding portion 130 . Specifically, the two first rod portions 111 are relatively parallel and spaced apart, the two second rod portions 121 are relatively parallel and spaced apart, and further, the two first steel rings 110 and the two second steel rings 120 are enclosed to form a In the rectangular receiving space 101, the welding parts 130 are located at the four corners of the rectangle.

Preferably, the first overlapping portion 112 and the second overlapping portion 122 are fixed together by welding, specifically, the first overlapping portion 112 and the second overlapping portion 122 can be fixed together by laser spot welding.

It should be noted that, in some embodiments, the first steel ring 110 is in a closed ring shape, and the second steel ring 120 is overlapped at the corner of the first steel ring 110 in the horizontal direction, for example, the first steel ring 110 In the shape of a rectangular ring, the second steel ring 120 is overlapped at four corners of the first steel ring 110 in the horizontal direction.

Of course, in some embodiments, the overlapping position of the first steel ring 110 and the second steel ring 120 may also be a non-corner.

In one embodiment, the flexible circuit board 400 is soldered to the soldering portion 130 through the pads 410 .

In one embodiment, the flexible circuit board 400 abuts on the first steel ring 110 and the second steel ring 120 respectively. Preferably, the flexible circuit board 400 is fixed on the first steel ring 110 and the second steel ring 120 by gluing. on the steel ring 120.

In addition, by increasing the overlapping portion of the first steel ring 110 and the second steel ring 120, the bonding area between the flexible circuit board 400 and the first steel ring 110 and the second steel ring 120 can also be increased, thereby increasing the number of the flexible circuit board 400 and the second steel ring 120. With the stability of gluing the first steel ring 110 and the second steel ring 120 , the flexible circuit board 400 is not easy to fall off from the first steel ring 110 and the second steel ring 120 .

Referring to FIG. 1 and FIG. 2 , in one embodiment, the vibration system 200 includes a diaphragm 210 for producing sound and a voice coil for driving the diaphragm 210 to vibrate and produce sound, and the diaphragm 210 is fixed on the first steel ring 110 and the second steel ring 110 ring 120.

Specifically, the diaphragm 210 includes a ring portion 211 , a first fixing portion 212 extending from the outer periphery of the ring portion 211 , a spherical top portion 213 extending from the inner periphery of the ring portion 211 , the first steel ring 110 and the The second steel rings 120 are respectively abutted on the first fixing portions 212 .

It should be noted that, the horizontal direction in the above embodiments refers to the direction parallel to the top of the ball 213 .

Referring to FIG. 2 , in one embodiment, the diaphragm 210 further includes a limiting portion 214 formed by bending and extending from the outer periphery of the first fixing portion 212 toward the first steel ring 110 and the second steel ring 120 . The sides of the ring 110 and the second steel ring 120 away from the ball top 213 are respectively abutted on the limiting portion 214 .

Referring to FIG. 1 and FIG. 2 , in one embodiment, the magnetic circuit system 300 includes a magnetic yoke 310 , a main magnetic steel disposed in the center of the magnetic yoke 310 , and disposed on the magnetic yoke 310 and surrounding the main magnetic steel to form a magnetic gap The auxiliary magnet, the main pole core attached above the main magnet, and the auxiliary pole core surrounding the main pole core and attached to the auxiliary magnet and fixed on the bracket, the yoke 310 is fixed on the first steel ring 110 and /or on the second steel ring 120 .

Preferably, the yoke 310 is fixed on the second steel ring 120 .

Please refer to FIG. 2 , specifically, the yoke 310 includes a second fixing portion 311 and abutting portions 312 located on both sides of the second fixing portion 311 . The fixing groove 123 of the second fixing portion 311 is installed, and the abutting portion 312 abuts on the side of the second steel ring 120 facing the ball top 213 .

Specifically, the fixing groove 123 is opened on the second rod portion 121 , and the abutting portion 312 abuts on the side of the second rod portion 121 facing the ball top 213 .

Please refer to FIG. 1 , specifically, the flexible circuit boards 400 are distributed on both sides of the magnetic yoke 310 in the direction facing the first steel ring 110 .

Referring to FIG. 6 , another embodiment of the present application provides an electronic terminal. The electronic terminal includes a terminal body 2 and the speaker 1 in any of the above embodiments. The speaker 1 is disposed on the terminal body 2 . In the speaker 1, since the first steel ring 110 and the second steel ring 120 are at least partially overlapped to form the welding portion 130 for welding with the flexible circuit board 400, the area of the welding surface 131 on the formed welding portion 130 is larger than The contact area of a single steel ring with the flexible circuit board 400 increases the area that can be welded with the flexible circuit board 400, so that the flexible circuit board 400 can be stably welded on the first steel ring 110 and the second steel ring 120, greatly The probability of virtual soldering is reduced, so that the sound quality of the speaker 1 is more stable, and the performance of the electronic terminal using the speaker 1 in the above embodiment is better.

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 inventive concept of the present application, but these belong to the present application. scope of protection.

Claims

A loudspeaker is characterized in that it comprises a basin frame with a receiving space, a vibration system fixed on the basin frame, a magnetic circuit system for driving the vibration system, and a flexible circuit board for electrical connection with the vibration system ;

The basin frame includes a first steel ring and a second steel ring, the first steel ring and the second steel ring are enclosed to form the receiving space, and the first steel ring and the second steel ring are at least A welding portion for welding with the flexible circuit board is partially overlapped and formed.
The loudspeaker according to claim 1, wherein the basin frame comprises two oppositely arranged first steel rings and two oppositely arranged second steel rings, the two first steel rings The receiving space is formed by alternately connecting with two second steel rings and enclosing them, and the welding portion is formed by overlapping the connection between the first steel ring and the second steel ring.
The loudspeaker according to claim 2, wherein the first steel ring comprises a first rod portion and a first overlapping portion formed by bending and extending from both ends of the first rod portion, and the second steel ring The ring includes a second rod portion and a second overlapping portion corresponding to the first overlapping portion formed by bending and extending from both ends of the second rod portion, and the first rod portion is perpendicular to the second rod part, the first overlapping part and the second overlapping part are arranged to overlap and form the welding part.
The loudspeaker according to claim 1, wherein the vibration system comprises a diaphragm for sounding, and the diaphragm is fixed on the first steel ring and the second steel ring.
The loudspeaker according to claim 4, wherein the diaphragm comprises a ring portion, a first fixing portion extending from the outer periphery of the ring portion, and a first fixing portion extending from the inner periphery of the ring portion. On the top of the ball, the first steel ring and the second steel ring are respectively abutted on the first fixing part.
The loudspeaker according to claim 5, wherein the diaphragm further comprises a limiter formed by bending and extending from the outer periphery of the first fixing portion toward the first steel ring and the second steel ring The first steel ring and the second steel ring are respectively abutted on the limiting portion at the side away from the top of the ball.
The loudspeaker according to any one of claims 1-6, wherein the magnetic circuit system comprises a magnetic yoke, and the magnetic yoke is fixed on the first steel ring and/or the second steel ring .
The loudspeaker according to claim 7, wherein the magnetic yoke comprises a second fixing part and abutting parts located on both sides of the second fixing part, and the second steel ring is provided with a connection with the second fixing part. The abutting portion is adapted to fit into the fixing groove of the second fixing portion, and the abutting portion abuts on the side of the second steel ring facing the receiving space.
The loudspeaker according to claim 8, wherein the flexible circuit boards are respectively abutted on the first steel ring and the second steel ring, and the flexible circuit boards are distributed on the magnetic yoke Both sides in the direction of the first steel ring.
An electronic terminal, characterized in that it comprises a terminal body and the speaker according to any one of the preceding claims 1-9, wherein the speaker is arranged on the terminal body.