CN108307277B

CN108307277B - Loudspeaker box

Info

Publication number: CN108307277B
Application number: CN201810012543.3A
Authority: CN
Inventors: 孟义军
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2018-01-05
Filing date: 2018-01-05
Publication date: 2020-07-14
Anticipated expiration: 2038-01-05
Also published as: CN108307277A

Abstract

The invention provides a loudspeaker box, which comprises a shell with an accommodating space, a sounding monomer accommodated in the accommodating space, a bonding pad and a soldering lug, wherein the sounding monomer is provided with the bonding pad, the soldering lug comprises a main body part fixed on the shell in an injection molding manner, an elastic pin extending from the main body part and a conductive terminal connected with the main body part, the elastic pin is elastically abutted against the bonding pad, and the conductive terminal is electrically connected with an external circuit. Compared with the prior art, the loudspeaker box has the advantages that the welding sheet fixed on the shell through injection molding is connected with the sounding monomer and an external circuit, steps of tin soldering, pressure maintaining, groove opening glue punching and the like are omitted, injection molding is higher in precision compared with assembly and fixing, the qualification rate of the loudspeaker box is higher, the welding sheet is adopted to replace a flexible circuit board, cost is reduced, a wire outlet groove of the flexible circuit board is cancelled, and the problem of air leakage of the wire outlet groove is completely avoided; the sounding monomer is connected through the bullet foot of soldering lug, has realized that the sounding monomer need not set up the bullet foot and also can use the bullet foot contact with external circuit.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of electroacoustic conversion, in particular to a loudspeaker box applied to portable electronic products.

[ background of the invention ]

With the rapid development of science and technology, audio devices have become more and more popular, and high-quality music enjoyment has become popular among many entertainment modes, so that speaker boxes for playing audio are widely used in current smart mobile devices.

In the related art, the speaker box comprises a shell with an accommodating space, a sounding monomer accommodated in the shell, a monomer pad for electrical connection arranged on the sounding monomer, a conductive terminal assembled in the shell and connected with the outside, and a flexible circuit board connected with the conductive terminal and the monomer pad.

However, in the speaker box of the related art, the flexible circuit board is fixed to the housing by welding, the assembling process includes the working procedures of matching, soldering, ultrasonic bonding of the upper cover and the lower cover, and grooving adhesive, the assembling process is complex, the working procedures of hot spot, pressure maintaining and the like are needed, the flexible circuit board is small in size and poor in assembling precision, the grooving adhesive is needed to be formed on the wire outlet groove after the assembling, if the groove adhesive is not coated in place, the risk of air leakage exists in the wire outlet groove, and meanwhile, the flexible circuit board is expensive.

Therefore, there is a need to provide a new speaker box to solve the above-mentioned drawbacks.

[ summary of the invention ]

The invention aims to overcome the technical problems and provide a loudspeaker box which is high in assembly efficiency, low in cost and good in reliability.

In order to achieve the above object, the present invention provides a speaker box, including a housing having an accommodating space, a sounding unit accommodated in the housing, the sounding unit having a pad for electrically connecting the sounding unit with an external circuit, the speaker box further including a soldering terminal, the soldering terminal including a main body portion fixed to the housing by injection molding, a spring leg extending from the main body portion and suspended in the accommodating space, and a conductive terminal extending from the main body portion to the outside of the accommodating space, the spring leg and the housing being disposed at an interval and elastically abutting against the pad, the conductive terminal being electrically connected with the external circuit.

Preferably, the elastic foot includes a first portion extending perpendicularly from the main body, a second portion extending perpendicularly from the first portion in a direction away from the main body, and a hook portion extending from the second portion, and the elastic foot elastically abuts against the pad through the hook portion.

Preferably, the soldering lug includes first soldering lug and second soldering lug, first soldering lug with the second soldering lug is certainly the relative both ends of sound production monomer one side extend and mutual interval sets up.

Preferably, the soldering lug further comprises a positioning part which extends from the main body part and is fixed on the shell in an injection molding mode.

Preferably, the housing is provided with a groove corresponding to the conductive terminal, and the conductive terminal is exposed in the groove to electrically connect with an external circuit.

Preferably, the housing comprises an upper cover and a lower cover covered and connected with the upper cover, and the upper cover and the lower cover are fixedly connected through ultrasonic welding.

Compared with the prior art, the loudspeaker box has the advantages that the welding sheet fixed on the shell through injection molding is connected with the sounding monomer and an external circuit, steps such as tin soldering, pressure maintaining, groove opening glue punching and the like are omitted, injection molding is higher in precision compared with assembly and fixation, and the qualification rate of the loudspeaker box is higher; the flexible circuit board is replaced by the soldering lug, so that the cost is reduced; an outlet groove of the flexible circuit board is cancelled, so that the problem of air leakage of the outlet groove is completely avoided; through the bullet foot of soldering lug is connected the sound production monomer has realized the sound production monomer need not set up the bullet foot and also can use the bullet foot contact with external circuit.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a perspective structural view of a speaker box provided by the present invention;

fig. 2 is an exploded perspective view of a speaker box provided in the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a view showing an assembled structure of a soldering lug and a lower cover of the speaker box according to the present invention;

fig. 5 is a perspective view of a soldering lug of the speaker box according to the present invention;

FIG. 6 is a partial enlarged view of portion B of FIG. 5;

fig. 7 is an assembly structure view of a sounding unit and a soldering lug of the speaker of the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, 2, 3 and 4, the present invention provides a speaker box 100, which includes a housing 1 having an accommodating space 5, a sound generating unit 2 accommodated in the housing 1, a steel sheet 3 located at one side of the sound generating unit 2, and a soldering lug 4 fixed to the housing 1 by injection molding, wherein the steel sheet 3 is injection molded on the housing 1 and is spaced from the sound generating unit 1 to form a front sound cavity, and the soldering lug 4 is electrically connected to the sound generating unit 2 and an external circuit.

Soldering lug 4 is fixed in through moulding plastics casing 1 has saved steps such as welding, pressurize and having made the notch and glue, and the installation is simple, and injection moulding is good for the cooperation uniformity of assembly, and the precision is high, and the product percent of pass is high, simultaneously, owing to cancelled flexible circuit board's outlet groove, avoids outlet groove's gas leakage problem completely, simultaneously, owing to use soldering lug 4 to replace the higher flexible circuit board of price, loudspeaker box 100's cost is lower.

The shell 1 comprises an upper cover 11 and a lower cover 12 covering the upper cover 11, the soldering lug 4 is fixed to the lower cover 12 in an injection molding mode, and the upper cover 11 and the lower cover 12 are fixedly connected through ultrasonic welding.

The sound generating unit 2 and the steel sheet 3 on one side of the sound generating unit 2 enclose a front cavity 51.

The single sounding body 2 comprises two bonding pads 21 arranged at intervals in the width direction of the single sounding body 2, and the bonding pads 21 are used for electrically connecting the single sounding body 2 with an external circuit.

Referring to fig. 5 and 6, the soldering lug 4 includes a first soldering lug 41 and a second soldering lug 42, and the first soldering lug 41 and the second soldering lug 42 extend from two opposite ends of one side of the sound generating unit 2 and are spaced from each other.

The first soldering lug 41 and the second soldering lug 42 are respectively connected with the current input end and the current output end of the sounding single body 2 to form a current loop.

Referring to fig. 7, the first soldering terminal 41 includes a first main body 411 fixed to the lower cover 12 by injection molding, a first elastic leg 412 extending from the first main body 411 and suspended in the accommodating space, a first conductive terminal 413 extending from the first main body 411 to the outside of the accommodating space, and a first positioning portion 414 extending from the first main body 411 and fixed to the lower cover 12 by injection molding, wherein the first elastic leg 412 is spaced from the housing 1 and elastically abuts against the soldering pad 21, and the first conductive terminal 413 is electrically connected to an external circuit.

The first elastic leg 412 includes a first part 4121 extending perpendicularly from the first body 411, a second part 4122 extending perpendicularly from the first part 4121 in a direction away from the first body 4121, and a hook 4123 extending from the second part 4122, and the first elastic leg 412 elastically contacts the pad 21 through the hook 4123.

Through the setting have elastic first bullet foot 412 with pad 2 elasticity butt can reduce the requirement to the precision of moulding plastics, improve sound production monomer 2 with the connection reliability of soldering lug 4.

The first elastic pin 412 is arranged on the soldering lug 4, and the sounding single body 2 can be contacted with an external circuit through the elastic pin without the elastic pin.

There are two first positioning portions 414, each first positioning portion 414 has a circular positioning hole 4141, the circular positioning hole 4141 is matched with an injection mold for positioning, and correspondingly, the lower cover 12 has two circular blind holes 121.

Through the matching positioning of the two circular positioning holes 4141 and the injection mold, the positioning precision is high, so that the assembly precision is improved, and the reliability of the loudspeaker box 100 is improved.

The second soldering terminal 42 includes a second main body portion 421 fixed to the lower cover 12 by injection molding, a second elastic pin 422 extending from the second main body portion 421 and suspended in the accommodating space, a second conductive terminal 423 extending from the second main body portion 421 to the outside of the accommodating space, and a second positioning portion 424 extending from the second main body portion 421 and fixed to the lower cover 12 by injection molding, the second elastic pin 422 and the housing 1 are arranged at an interval and elastically abutted to the soldering pad 21, and the second conductive terminal 423 is electrically connected to an external circuit.

The second spring leg 422 has the same structure as the first spring leg 412.

The first conductive terminal 413 and the second conductive terminal 423 are rectangular plate-shaped, the lower cover 12 is provided with a groove 123, and the first conductive terminal 413 and the second conductive terminal 423 are both exposed at the bottom of the groove 123, so that the first conductive terminal 413 and the second conductive terminal 423 are electrically connected with the outside.

Second location portion 424 is the rectangle spacer, the rectangle spacer is 2, the rectangle spacer is used for fixing a position with injection mold cooperation, correspondingly, lower cover 12 has even a rectangle arch 122.

Through two rectangle spacers with injection mold carries out the cooperation location, and positioning accuracy is high to assembly accuracy has been improved, improved loudspeaker box 100's reliability.

Compared with the prior art, the loudspeaker box 100 has the advantages that the welding sheet 4 fixed on the shell 1 through injection molding is connected with the sounding monomer 2 and the outside, so that the steps of soldering, pressure maintaining, groove opening glue punching and the like are omitted, the injection molding is higher in precision compared with assembly and fixation, the qualification rate of the loudspeaker box 100 is higher, the welding sheet 4 is adopted to replace a flexible circuit board, the cost is reduced, a wire outlet groove of the flexible circuit board is cancelled, and the air leakage problem of the wire outlet groove is completely avoided; through the bullet foot of soldering lug 4 is connected sound production monomer 2 has realized sound production monomer 2 need not set up the bullet foot and also can use the bullet foot contact with external circuit.

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. A loudspeaker box comprises a shell with an accommodating space and a sounding monomer accommodated in the shell, wherein the sounding monomer is provided with a bonding pad for realizing the electric connection of the sounding monomer and an external circuit, characterized in that the loudspeaker box also comprises a soldering lug, the soldering lug comprises a main body part fixed on the shell in an injection molding way, an elastic pin extending from the main body part and suspended in the accommodating space, and a conductive terminal extending from the main body part to the outside of the accommodating space, the elastic pin and the shell are arranged at intervals and elastically abutted against the bonding pad, the conductive terminal is electrically connected with an external circuit, the elastic foot comprises a first part vertically extending from the main body part, a second part vertically extending from the first part to a direction far away from the main body part and a hook part extending from the second part, and the elastic foot is elastically abutted to the bonding pad through the hook part.

2. The speaker cabinet of claim 1, wherein the soldering lug includes a first soldering lug and a second soldering lug, the first soldering lug and the second soldering lug extend from opposite ends of one side of the sound generating unit and are spaced from each other.

3. A loudspeaker enclosure according to claim 2, wherein the soldering lug further comprises a locating portion extending from the main body portion and injection moulded to the housing.

4. The speaker box as claimed in claim 1, wherein the housing has a recess corresponding to the conductive terminal, and the conductive terminal is exposed in the recess to electrically connect with an external circuit.

5. The loudspeaker enclosure of claim 1, wherein the housing includes an upper cover and a lower cover in covering relation with the upper cover, the upper cover and the lower cover being fixedly attached by ultrasonic welding.