CN112468908B

CN112468908B - Loudspeaker enclosure and method of assembling the same

Info

Publication number: CN112468908B
Application number: CN202011507758.6A
Authority: CN
Inventors: 任璋; 钟志威; 赵彬; 周孙铜; 宋威
Original assignee: AAC Microtech Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Current assignee: AAC Microtech Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2022-03-01
Anticipated expiration: 2040-12-18
Also published as: CN112468908A; WO2022126782A1

Abstract

The invention provides a loudspeaker box, which comprises a shell with an accommodating space and a sounding unit with a vibrating diaphragm, wherein the sounding unit is accommodated in the shell, the sounding unit is provided with a bonding pad used for being electrically connected with an external circuit, the loudspeaker box also comprises a soldering lug, the soldering lug comprises a main body part fixed on the shell, and a fixed terminal and a conductive terminal which are arranged at two opposite ends of the main body part, the fixed terminal is positioned in the accommodating space and is electrically connected with the bonding pad, the conductive terminal extends out of the accommodating space and is electrically connected with the outside, the fixed terminal comprises a first connecting section which is connected with the main body part and is vertical to the main body part and a second connecting section which is vertical to the first connecting section, and the second connecting section is welded and fixed with the bonding pad. Meanwhile, the invention also provides an assembly method of the loudspeaker box. The loudspeaker box and the assembling method thereof provided by the invention have the advantages of compact structure in the vibration direction and excellent falling performance.

Description

Loudspeaker enclosure and method of assembling the same

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of acoustoelectrics, in particular to a loudspeaker box and an assembling method thereof.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of a mobile phone are very diverse, one of which is a high-quality music function, and thus, a speaker box for playing sound is widely applied to the 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. The flexible circuit board is fixed on the shell through welding, the assembly process comprises the working procedures of matching, tin soldering welding, grooving glue punching and the like, the assembly process is complex, and the working procedures of point stamping, pressure maintaining and the like are required; because the flexible circuit board has small volume and poor assembly precision, notch glue needs to be applied to the wire outlet groove after assembly, and if the notch glue is not coated in place, the wire outlet groove has the risk of air leakage; meanwhile, the flexible circuit board is expensive.

Therefore, there is a need to provide a new speaker box and a method of assembling the same to solve the above problems.

[ summary of the invention ]

In view of the above problems, an object of the present invention is to provide a speaker box having a compact structure in a vibration direction and excellent drop performance, and an assembling method thereof.

One of the purposes of the invention is realized by adopting the following technical scheme:

the utility model provides a loudspeaker box, including the casing that has accommodating space and the sound production monomer that has the vibrating diaphragm, the sound production monomer accept in the casing, the sound production monomer have be used for the pad of being connected with external circuit electricity, loudspeaker box still includes the soldering lug, the soldering lug is including being fixed in the main part of casing and set up in the fixed terminal and the conductive terminal at the relative both ends of main part, fixed terminal is located in the accommodating space and with the pad electricity is connected, conductive terminal extends to the accommodating space is outer and is connected with outside formation electricity, fixed terminal include with the main part is connected and looks vertically first linkage segment and with first linkage segment vertically second linkage segment, the second linkage segment with pad welded fastening.

Preferably, the housing includes an upper cover having a sound outlet channel and an upper housing fixedly connected to the upper cover, the vibration diaphragm divides the accommodating space into a front cavity and a rear cavity, the front cavity is communicated with the sound outlet channel, the upper cover includes a fixing section disposed in the rear cavity and fixedly connected to the upper housing, and the main body portion, the conductive terminals and the first connecting section are all embedded in the fixing section.

Preferably, the upper cover and the upper shell and the soldering lug and the fixed section are integrally formed by injection molding.

Preferably, the sound production monomer includes the basin frame and is fixed in respectively the vibration system of basin frame and the magnetic circuit that has the magnetic gap, vibration system includes the vibrating diaphragm, inserts magnetic gap and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production and with the flexible circuit board that the voice coil loudspeaker voice coil electricity is connected, the pad be formed in on the flexible circuit board, and be located flexible circuit board keeps away from the one end of voice coil loudspeaker voice coil.

Preferably, the vibration system further includes a frame, the frame includes a body portion fixedly disposed on the vibrating diaphragm and a side wall formed by bending and extending the outer peripheral edge of the body portion to a direction away from the vibrating diaphragm, the flexible circuit board includes a fixing portion fixedly connected to the frame, a connecting portion connected to the voice coil, and a plurality of connecting arms connecting the fixing portion and the connecting portion, the connecting portion includes a third connecting section abutted against the inner wall of the body portion and a fourth connecting section abutted against the inner wall of the side wall, and the pad is formed on the fixing portion.

Preferably, the fixing portion and the connecting arm are located on the same plane, and the third connecting section is parallel to the fixing portion.

A method of assembling a loudspeaker enclosure, providing a loudspeaker enclosure as claimed in any preceding claim, comprising the steps of:

step S10, mounting the sounding monomer into the accommodating space;

step S20, bending the second connecting section and enabling the second connecting section to be in abutting contact with the pad;

and step S30, welding the second connecting section and the pad.

Compared with the prior art, the loudspeaker box provided by the invention has the advantages that the fixed terminal comprises the first connecting section which is connected with the body part and is vertical to the body part and the second connecting section which is vertical to the first connecting section, the fixed terminal is welded and fixed with the welding disc through the second connecting section, namely the fixed terminal is in a bent structure, and the second connecting section is utilized to provide a tightening force in the vibration direction for the sound generating unit, so that the drop performance of a product is optimized.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a speaker box according to the present invention;

FIG. 2 is a schematic perspective view of another angle of the speaker box according to the present invention;

fig. 3 is a schematic perspective view of a speaker box according to the present invention;

FIG. 4 is an enlarged view of portion D of the speaker box of FIG. 3;

fig. 5 is an exploded perspective view of a sound generating unit in a speaker box according to the present invention;

FIG. 6 is an enlarged view of portion C of the speaker box of FIG. 5;

FIG. 7 is an enlarged view of portion E of the speaker box of FIG. 5;

FIG. 8 is a cross-sectional view of the speaker cabinet of FIG. 2 taken along line A-A;

FIG. 9 is an enlarged view of portion G of the speaker box of FIG. 8;

FIG. 10 is a cross-sectional view of the speaker cabinet of FIG. 2 taken along line B-B;

FIG. 11 is an enlarged view of portion F of the speaker box of FIG. 10;

fig. 12 is a flow chart of a method of assembling a loudspeaker enclosure according to the present invention.

[ detailed description ] embodiments

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

It should be noted that all directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 to 11, the present invention provides a speaker box 100, wherein the speaker box 100 includes a housing 10 having an accommodating space 101, a sound generating unit 20 having a diaphragm 21, and a soldering terminal 30. The sounding single body 20 is accommodated in the casing 10, the sounding single body 20 is provided with a pad 22 electrically connected with the soldering lug 30, and the soldering lug 30 is further electrically connected with an external circuit.

The housing 10 includes an upper cover 11 having a sound outlet channel 102 and an upper housing 12 fixedly connected to the upper cover 11.

The diaphragm 21 divides the accommodating space 101 into a front cavity 1011 and a rear cavity 1012 corresponding to the front cavity 1011, and the front cavity 1011 is communicated with the sound outlet channel 102.

The upper cover 11 includes a fixing section 111 disposed in the rear cavity 1012 and fixedly connected to the upper case 12.

The sounding unit 20 includes a frame 23, a magnetic circuit system 24 fixed to the frame 23 and having a magnetic gap 103, and a vibration system 25 driven by the magnetic circuit system 24 and vibrating to generate sound.

The vibration system 25 includes the diaphragm 21, a voice coil 251 inserted into the magnetic gap 103 and driving the diaphragm 21 to vibrate and generate sound, a flexible circuit board 252 electrically connected to the voice coil 251, and a frame 254 fixed to the diaphragm 21. The bonding pad 22 is formed on the flexible circuit board 252 and is located at an end of the flexible circuit board 252 away from the voice coil 251.

During the operation of the speaker box 100, the external power supply circuit supplies power to the voice coil 251 through the soldering tab 30 and the flexible circuit board 252 in sequence. It is understood that, in other embodiments, the pad may also be a conductive sheet fixed on the frame and electrically connected to the flexible circuit board, and accordingly, an external power supply circuit sequentially supplies power to the voice coil 251 through the pad, the pad and the flexible circuit board.

The flexible circuit board 252 includes a fixing portion 2521 fixedly connected to the frame 23, a connecting portion 2522 connected to the voice coil 251, and a plurality of connecting arms 2523 connecting the fixing portion 2521 and the connecting portion 2522.

The connecting portion 2522 includes a third connecting segment 2525 and a fourth connecting segment 2526 bent and extended from the third connecting segment 2525. Through the arrangement that the flexible circuit board 252 includes the bending structure formed by the third connection segment 2525 and the fourth connection segment 2526, it is ensured that the soldering lug 30 and the sounding unit 20 maintain relative positions, and the stability of the product is improved.

Preferably, in the present embodiment, the fixing portion 2521 and the connecting wall 2523 are on the same plane, and the third connecting section 2525 is parallel to the fixing portion 2521.

The framework 254 includes a body portion 2541 fixed to the diaphragm 21 and a sidewall 2542 formed by bending and extending from an outer periphery of the body portion 2541 to a direction away from the diaphragm 21.

In this embodiment, the cross section of the body portion 2541 is rectangular, and the side walls 2542 are formed by bending and extending from four corners of the body portion 2541.

The soldering lug 30 includes a main body 31 fixed to the housing 10, and a fixed terminal 32 and a conductive terminal 33 provided at opposite ends of the main body 31. The fixed terminal 32 is located in the receiving space 101 and electrically connected to the pad 22, and the conductive terminal 33 extends out of the receiving space 101 and is electrically connected to the outside.

Specifically, the fixed terminal 32 includes a first connecting section 321 connected to the body 31 and perpendicular thereto, and a second connecting section 322 perpendicular to the first connecting section 321. The second connecting section 322 is fixed to the pad 22 by welding.

Preferably, in the present embodiment, the main body 31, the conductive terminals 33, and the first connecting section 321 are all embedded in the fixing section 111.

Preferably, the upper cover 11 and the upper housing 12 and the soldering lug 30 and the fixing section 111 are integrally formed by injection molding. So configured, the integrity of the loudspeaker enclosure 100 is enhanced, increasing the structural strength of the loudspeaker enclosure 100.

Referring to fig. 12, the present invention further provides an assembling method of a speaker box 100, which specifically includes the following steps:

step S10, mounting the sound generating unit 20 in the accommodating space 101;

step S20, bending the second connection section 322 and bringing the second connection section 322 into abutting contact with the pad 22;

it should be noted that, in the forming process of the soldering lug 30, the second connecting section 322 and the first connecting section 321 are originally on the same plane, and are bent to make the second connecting section 322 support the sounding single body 20 in the vibration direction, and the second connecting section 322 is utilized to provide the tightening force in the vibration direction for the sounding single body 20, which is beneficial to optimizing the falling performance of the product.

Step S30, welding the second connecting section 322 and the pad 22;

and step S40, assembling other components.

According to the speaker box 100 provided by the invention, the fixed terminal 32 comprises the first connecting section 321 which is connected with the body part 2421 and is perpendicular to the body part and the second connecting section 322 which is perpendicular to the first connecting section 321, the second connecting section 322 is welded and fixed with the bonding pad 22, namely the fixed terminal 32 is arranged to be a bending structure, and the second connecting section 322 is used for providing a tightening force in a vibration direction for the sound generating unit 20, so that the drop performance of a product is favorably optimized.

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 a containing space and a sound producing unit with a vibrating diaphragm, the sounding single body is contained in the shell and is provided with a bonding pad which is electrically connected with an external circuit, it is characterized in that the loudspeaker box also comprises a soldering lug, the soldering lug comprises a main body part fixed on the shell, and a fixed terminal and a conductive terminal which are arranged at two opposite ends of the main body part, the fixed terminal is positioned in the accommodating space and electrically connected with the bonding pad, the conductive terminal extends out of the accommodating space and is electrically connected with the outside, the fixed terminal comprises a first connecting section extending from the main body part in a bending way and a second connecting section extending from the first connecting section in a bending way, the second linkage segment with pad welded fastening, just the second linkage segment does the sound production monomer provides the packing power of vibration direction.

2. The speaker box according to claim 1, wherein the housing includes an upper cover having a sound outlet channel and an upper housing fixedly connected to the upper cover, the diaphragm divides the accommodating space into a front cavity and a rear cavity, the front cavity is communicated with the sound outlet channel, the upper cover includes a fixing section disposed in the rear cavity and fixedly connected to the upper housing, and the main body, the conductive terminal and the first connecting section are all embedded in the fixing section.

3. The speaker box of claim 2, wherein the upper cover and the upper housing and the soldering lug and the fixing section are integrally injection molded.

4. The loudspeaker box of claim 1, wherein the sound generating unit comprises a frame, and a vibration system and a magnetic circuit system with a magnetic gap respectively fixed on the frame, the vibration system comprises the diaphragm, a voice coil inserted into the magnetic gap and driving the diaphragm to vibrate and generate sound, and a flexible circuit board electrically connected with the voice coil, and the bonding pad is formed on the flexible circuit board and located at one end of the flexible circuit board far away from the voice coil.

5. The speaker box of claim 4, wherein the vibration system further comprises a frame, the frame comprises a body portion fixedly disposed on the diaphragm and a sidewall formed by bending and extending from an outer periphery of the body portion to a direction away from the diaphragm, the flexible circuit board comprises a fixing portion fixedly connected to the frame, a connecting portion connected to the voice coil, and a plurality of connecting arms connecting the fixing portion and the connecting portion, the connecting portion comprises a third connecting section abutted against an inner wall of the body portion and a fourth connecting section abutted against an inner wall of the sidewall, and the pad is formed on the fixing portion.

6. A loudspeaker enclosure according to claim 5, wherein the fixing portion is coplanar with the connecting arm, and the third connecting section is parallel to the fixing portion.

7. A method of assembling a loudspeaker enclosure, providing a loudspeaker enclosure according to any one of claims 1 to 6, comprising the steps of:

step S10, mounting the sounding monomer into the accommodating space;

and step S30, welding the second connecting section and the pad.