CN210168219U

CN210168219U - Loudspeaker

Info

Publication number: CN210168219U
Application number: CN201921023467.2U
Authority: CN
Inventors: 李健; 吴军
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-29
Filing date: 2019-07-03
Publication date: 2020-03-20
Anticipated expiration: 2029-07-03
Also published as: WO2021000085A1

Abstract

The utility model provides a loudspeaker, including the casing that has accommodating space and accept in sound production monomer in the accommodating space, the free back of sound production expose be equipped with the conductive terminal that sound production monomer electricity is connected, still including being fixed in the casing and with circuit board, the connection that conductive terminal electricity is connected conductive terminal with soldering lug between the circuit board, the soldering lug is including fixing the free slice body of side surface of sound production, by the slice body is buckled and is extended to the free back of sound production and with conductive terminal corresponds first extension and by the slice body is buckled the second extension that extends to keeping away from first extension direction, the circuit board warp the second extension with conductive terminal electricity is connected. The utility model discloses a soldering lug is connected with the sound production monomer, has avoided in traditional connecting method that the too wide problem of interfering takes place with the apron of flexible circuit board.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of sound production devices, in particular to a loudspeaker.

[ background of the invention ]

In the structural schematic diagram of the existing speaker, as shown in fig. 1, a sound generating unit 3 is disposed in an accommodating cavity of a cover plate 1A, and a circuit board 4 is directly soldered on a pad of the sound generating unit 3. Along with the miniaturization and refinement of product design, the cover plate frame of the product is also smaller and smaller, and in some extreme cases, the circuit board can interfere with the cover plate frame even if the circuit board is wired according to the limit, in the figure situation, because the width of the circuit board 4 is too large, the circuit board cannot be completely accommodated in the cover plate 1A, the cover plate 1A and the circuit board 4 have an overlapping area S, and the two interfere.

Aiming at the problems, the design of the cover plate can be only modified at present, the frame of the cover plate is expanded outwards, and the volume of the product is increased. Therefore, the prior art has yet to be developed.

[ summary of the invention ]

The invention aims to provide a loudspeaker, and aims to solve the problem that in the prior art, the problem of interference between a cover plate and a circuit board cannot be solved due to the width limitation of the circuit board.

The technical scheme of the invention is as follows:

a loudspeaker comprises a shell with an accommodating space and a sounding monomer accommodated in the accommodating space, wherein the sounding monomer comprises a sounding surface and a back surface which are oppositely arranged and a side surface which is connected with the sounding surface and the back surface, a conductive terminal which is electrically connected with the sounding monomer is exposed at the back surface, the shell comprises a top wall which is corresponding to the sounding surface, a bottom wall which is opposite to the top wall and a side wall which extends from the edge of the top wall to the bottom wall, the top wall, the bottom wall and the side wall enclose the accommodating space, the loudspeaker further comprises a circuit board which is fixed on the shell and is electrically connected with the conductive terminal, a boss which is arranged at an interval with the sounding monomer is formed by extending the top wall to the bottom wall, and the loudspeaker further comprises a welding piece which is connected between the conductive terminal and the circuit board, the soldering lug comprises a sheet body fixed on one side of the side surface close to the boss, a first extending portion extending from the sheet body to the back face and corresponding to the conductive terminal in a bending mode, and a second extending portion extending from the sheet body to the boss in a bending mode, the second extending portion is fixed on the boss, and one end of the circuit board is fixed on the boss and electrically connected with the conductive terminal through the second extending portion.

Furthermore, the two conductive terminals are exposed on the back face and insulated from each other, the two conductive terminals are located at two opposite ends of one side, close to the boss, of the sounding unit, and the soldering lugs are in one-to-one correspondence with the conductive terminals.

Further, the sheet-shaped bodies of the two soldering lugs are spaced from each other.

Further, the loudspeaker also comprises an insulating piece connected between the two sheet-shaped bodies.

Further, the sheet-like body is located between the side surface and the boss, and the first extension portion and the second extension portion extend in opposite directions.

Further, the sheet-shaped body is perpendicular to the first extending portion, and the sheet-shaped body is perpendicular to the second extending portion.

Further, the boss comprises a top surface located at one end, far away from the top wall, of the boss and an extending surface extending from one side, far away from the side surface, of the top surface to the top wall, and the top surface carries the second extending portion.

Furthermore, the circuit board comprises a welding part stacked on the top surface, a bending part extending from the welding part to the top wall, and a connecting part extending from the bending part and fixedly attached to the top wall; the bending part is attached to the extending surface.

Furthermore, a bonding pad electrically connected with an external circuit is formed at one end, far away from the boss, of the connecting portion, the bonding pad is exposed on the shell, a positioning hole is formed in the bonding pad, and a positioning column matched with the positioning hole is convexly arranged on the top wall.

Further, the casing still includes from the roof extends the installation wall that forms towards the diapire direction, sound production monomer correspondence is fixed in the installation wall and with the roof interval sets up.

The invention has the beneficial effects that: according to the loudspeaker provided by the invention, the circuit board is connected with the sounding monomer through the soldering lug instead of directly welding the circuit board on the surface of the sounding monomer, the width of the circuit board can be greatly reduced, the circuit board cannot interfere with the shell, and the soldering lug is fixed on the side surface of the sounding monomer and cannot interfere with the shell, so that the problem that the circuit board interferes with the cover plate due to too wide width in the traditional connecting method is solved.

[ description of the drawings ]

FIG. 1 is a schematic diagram illustrating interference between a circuit board and a cover plate according to the prior art;

FIG. 2 is a perspective view of one embodiment of a speaker of the present invention;

FIG. 3 is an exploded view corresponding to FIG. 2;

FIG. 4 is a perspective view of one embodiment of a bonding pad of the present invention;

FIG. 5 is a block diagram of a first embodiment of the present invention for connecting two bonding pads;

fig. 6 is a structural view of a second embodiment of the present invention for connecting two bonding pads.

[ detailed description ] embodiments

The invention is further described with reference to the following figures and embodiments.

The invention provides an embodiment of a loudspeaker, as shown in fig. 2 and fig. 3, the loudspeaker comprises a shell with a containing space, specifically comprises an upper shell 1 and a lower shell 2, in the figure, in order to show more details, the upper and lower placing positions are reversed, a sound generating unit 3 is contained in the containing space, the sound generating unit 3 comprises a sound generating surface 31 and a back surface 32 which are oppositely arranged, and a side surface 33 which connects the sound generating surface 31 and the back surface 32, and a conductive terminal 34 which is electrically connected with the sound generating unit 3 is exposed on the back surface 32; the casing comprises a top wall 11 corresponding to the sound-emitting surface 31, a bottom wall 21 opposite to the top wall 11, and a side wall 14 extending from the edge of the top wall 11 to the bottom wall 21, wherein the top wall 11, the bottom wall 21 and the side wall 14 enclose the accommodating space; the top wall 11 extends towards the bottom wall 21 to form a boss 12 which is arranged at a distance from the sounding single body 3; the speaker further includes a circuit board 4 fixed to the housing (e.g., upper housing 1 in the figure) and electrically connected to the conductive terminals 34, and a soldering tab connected between the conductive terminals 34 and the circuit board 4, where the specific structure of the soldering tab is, for example, a soldering tab 5B, as shown in fig. 4, the soldering tab includes a sheet-shaped body 51 fixed to one side of the side surface 33 close to the boss 12, a first extending portion 52 bent from the sheet-shaped body 51 to extend to the back surface 32 and corresponding to the conductive terminals 34, and a second extending portion 53 bent from the sheet-shaped body 51 to extend to the boss, the second extending portion 53 is fixed to the boss 12, and one end of the circuit board 4 is fixed to the boss 12 and electrically connected to the conductive terminals 34 through the second extending portion 53. Preferably, the housing may further include a mounting wall 15 extending from the top wall 11 toward the bottom wall 21, and the sound-generating unit 3 is correspondingly fixed to the mounting wall 15 and spaced apart from the top wall 11.

In the traditional loudspeaker structure, the circuit board is directly welded on the surface of the sound generating monomer, and the circuit board is interfered with the shell when the width of the circuit board is too large. In addition, the second extending portion 53 of the soldering lug is carried by the boss 12, so that the problem that the connection reliability of the soldering point is influenced due to the fact that the second extending portion 53 generates a downward pulling force when being in a suspended state is avoided.

In the above embodiment, the extending directions of the first extending portion 52 and the second extending portion 53 are set according to the illustrated structure, and the two extending directions are opposite and perpendicular to the sheet-shaped body 51. In fact, as the design positions of the circuit boards are different, the extension position, the angle and the extension direction can be flexibly adjusted according to the specific structural design. The essence of the invention is that the sheet-shaped body 51 is fixed on the side surface of the sounding unit 3, and then two welding ends (the first extension part 52 and the second extension part 53) respectively extend from the sheet-shaped body 51 to be respectively connected with the bonding pad 34 and the circuit board 4, so that the problem that the circuit board 4 is too wide and interferes with the shell in the traditional connection method is avoided. The soldering lug plays a role of conducting the circuit board and the soldering pad, so the soldering lug can be made of common conductor materials, such as copper sheets.

Further, two conductive terminals 34 may be provided, as shown in fig. 3, and are respectively exposed on the back surface 32 and insulated from each other, the two conductive terminals 34 are located at two opposite ends of the sounding unit 3 near one side of the boss 12, correspondingly, two soldering lugs are provided, which are 5A and 5B respectively, and are arranged at intervals, and the soldering lugs are in one-to-one correspondence with the conductive terminals.

In order to facilitate assembly and improve production efficiency and assembly precision, preferably, the sheet-shaped body of the soldering lug 5A and the sheet-shaped body of the soldering lug 5B in the above embodiment are connected through an insulating member to form an integrated assembly, so that when the soldering pad is soldered with 2 soldering lugs, only one-time alignment operation is needed. Specifically, as shown in fig. 5, the insulating sheet 6A may be fixed to the same surface of the sheet-like body of the 2 bonding pads for connection. The fixing method shown in fig. 6 may be adopted, and the insulating block 6B may be used to connect the gap between the side end faces of the sheet-like body of the 2 bonding pads.

The present invention provides another preferred embodiment, the boss 12 includes a top surface 121 located at an end of the boss far from the top wall 11, and an extending surface 122 extending from a side of the top surface 121 far from the side surface 33 to the top wall 11, and the top surface 121 carries the second extending portion 53.

Further, the circuit board 4 may be made into a suitable structure, and specifically, the circuit board 4 may include a soldering portion 41 stacked on the top surface 121, a bending portion 42 extending from the soldering portion 41 to the top wall 11, and a connecting portion 43 extending from the bending portion 42 and fixed to the top wall; the bending portion 42 is attached to the extending surface 122, in this embodiment, the circuit board 4 can be tightly attached to the top wall 11 of the upper housing 1 for assembly and fixation, so as to prevent the circuit board 4 from loosening and dragging the butt joint.

In order to further improve the assembly efficiency and the assembly precision, it is preferable that, as shown in fig. 3, the circuit board 4 further includes a pad 44 electrically connected to an external circuit, the pad 44 is disposed at an end of the connecting portion away from the boss and exposed to the housing, the pad is further provided with a positioning hole 441, and the top wall 11 is protrudingly provided with a positioning post 13 installed to match with the positioning hole 441.

In summary, the present invention provides a speaker, wherein a circuit board is connected to a pad of a sound generating unit through a soldering lug, a sheet-shaped body of the soldering lug is fixed to a side surface of the sound generating unit, and then two extending portions on the sheet-shaped body are respectively connected to a conductive terminal of the sound generating unit and the circuit board, so as to avoid the problem that the circuit board is too wide and interferes with a housing in the conventional connection method. In addition, the invention avoids the reliability problem caused by adding soldering lugs by adding the lug boss on the shell, and simultaneously improves the assembly efficiency and the assembly precision by arranging the positioning column on the shell and the positioning hole on the circuit board.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a loudspeaker, including the casing that has accommodating space and accept in sound production monomer in the accommodating space, sound production monomer including relative sound production face and the back that sets up and be connected the side surface at sound production face and back, the back expose be equipped with the electrically conductive terminal that sound production monomer electricity is connected, the casing include with the roof that sound production face corresponds, with relative diapire of roof and certainly roof edge court the lateral wall that the diapire extends, the roof the diapire reaches the lateral wall encloses into accommodating space, loudspeaker still including be fixed in the casing and with the circuit board that electrically conductive terminal is connected, its characterized in that: the roof court the diapire direction extend be formed with the boss that the sound production monomer interval set up, the speaker is still including connecting conductive terminal with soldering lug between the circuit board, the soldering lug is including fixing the side surface is close to the slice body of boss one side, by the slice body is buckled and is extended to the back and with the first extension that conductive terminal corresponds, and by the slice body to the second extension that the boss is buckled and is extended, the second extension is fixed in the boss, circuit board one end is fixed in the boss and warp the second extension with the conductive terminal electricity is connected.

2. The loudspeaker of claim 1, wherein two of said conductive terminals are exposed at said back surface and insulated from each other, said two conductive terminals are located at opposite ends of said sound generating unit near one side of said boss, and said soldering lugs are in one-to-one correspondence with said conductive terminals.

3. A loudspeaker according to claim 2, wherein the plate-like bodies of the two lugs are spaced from one another.

4. A loudspeaker according to claim 3, further comprising an insulator connected between the two sheet-like bodies.

5. The speaker of claim 1, wherein the sheet-like body is located between the side surface and the boss, and the first extension and the second extension extend in opposite directions.

6. The loudspeaker of claim 5, wherein the sheet-like body is perpendicular to the first extension and the sheet-like body is perpendicular to the second extension.

7. A loudspeaker according to any one of claims 1 to 6, wherein the boss comprises a top surface at an end of the boss remote from the top wall, and an extension surface extending from a side of the top surface remote from the side surface to the top wall, the top surface carrying the second extension.

8. The speaker of claim 7, wherein the circuit board includes a soldering portion stacked on the top surface, a bending portion extending from the soldering portion to the top wall, and a connecting portion extending from the bending portion and attached to the top wall; the bending part is attached to the extending surface.

9. The speaker of claim 8, wherein an end of the connecting portion remote from the boss forms a pad electrically connected to an external circuit, the pad is exposed from the housing, the pad is provided with a positioning hole, and the top wall is provided with a positioning post protruding to match with the positioning hole.

10. The speaker of claim 1, wherein the housing further includes a mounting wall extending from the top wall toward the bottom wall, and the sound generating unit is correspondingly fixed to the mounting wall and spaced apart from the top wall.