WO2022000504A1 - Loudspeaker box - Google Patents

Abstract

The present utility model provides a loudspeaker box, comprising a housing having an accommodating space, a loudspeaker unit accommodated in the accommodating space, and a flexible circuit board electrically connected to the loudspeaker unit, the housing comprising a support forming the accommodating space. The loudspeaker box is characterized in that: the loudspeaker box further comprises at least one soldering lug embedded on the housing by means of a metal insert injection molding process; the soldering lug comprises a soldering portion passing through the support; and the soldering portion comprises a first connecting surface exposed in the accommodating space and connected to the flexible circuit board, and a second connecting surface exposed out of the accommodating space. A connecting point of the flexible circuit board of the loudspeaker box of the present utility model does not need to be led out by means of a through hole, thus reducing the assembly difficulty, and improving the assembly efficiency.

Description

a speaker box technical field

The utility model relates to the technical field of sound-electricity conversion, in particular to a speaker box.

Background technique

With the development of electronic science and technology, electronic products such as mobile phones have become necessities of people's daily work and life, and the functions of mobile phones have also become increasingly sophisticated with the development of technology. As an important part of the mobile phone, the related technology of the speaker is constantly being updated.

technical problem

In the related art, a loudspeaker usually includes a housing with an accommodation space, a loudspeaker unit (ie, a sounding unit) accommodated in the accommodation space, and a flexible circuit board electrically connected to the loudspeaker unit. For circuit connection, it is usually necessary to create a through hole at the bottom of the bracket for the pad of the flexible circuit board to extend, and then pass the pad of the flexible circuit board through the through hole and then protrude from the receiving space. However, the texture of the flexible circuit board is relatively soft, and the working space of the accommodation space is limited. Therefore, the operation process of threading the flexible circuit board is relatively difficult, and the flexible circuit board is easy to shake in the perforation after it is threading, sealing the assembly tape for the subsequent whole machine. It is difficult to come to a certain extent, resulting in low overall assembly efficiency.

Therefore, it is necessary to provide a loudspeaker to solve the problem of low human efficiency caused by the above-mentioned difficulty in assembling.

technical solutions

The purpose of the present invention is to provide a new speaker box to improve the above-mentioned problem of assembly efficiency.

The technical solution of the present invention is as follows: a speaker is provided, which includes a casing with a receiving space, a speaker unit accommodated in the receiving space, and a flexible circuit board electrically connected to the speaker unit, the casing includes The bracket forming the accommodating space is characterized in that: the speaker box further includes at least one welding piece embedded on the shell by a metal insert injection molding process; the welding piece includes a welding part passing through the bracket , the welding part includes a first connection surface exposed in the receiving space and connected with the flexible circuit board; and a second connection surface exposed outside the receiving space.

Through the above structure, the solder tab can be fixed on the housing and pass through the bracket, the first connection surface can be connected with the flexible circuit board; the second connection surface can be connected with other circuits. It does not need to open holes on the bracket, and also saves the process of piercing the flexible circuit board. It only needs to connect the pads of the flexible circuit board with the first connection surface of the solder tab, and this structure also avoids related In the technology, the flexible circuit board is easy to shake in the perforation, which is not conducive to the defect of subsequent installation of the whole machine, and improves the processing and assembly efficiency of the speaker box.

More preferably, the solder tab further includes legs connected to both ends of the welding portion, the legs are formed by bending the solder tab and embedded in the housing.

More preferably, the support leg is bent to form a support portion and an extension portion, one end of the support portion is connected to the welding portion, and the other end is connected to the extension portion.

More preferably, the edges of the first connecting surface and the second connecting surface are covered with a pressing bar or a pressing block integrally formed with the casing.

More preferably, two or more of the solder tabs are arranged in parallel with relative intervals.

More preferably, the solder pads are copper metal solder pads.

More preferably, it also includes a retaining wall placed in the accommodating space and dividing the accommodating space into a first cavity and a second cavity; the speaker unit is placed in the first cavity.

More preferably, the retaining wall encloses the first cavity.

More preferably, a positioning column for positioning the flexible circuit board is provided in the receiving space, and the flexible circuit board is provided with a positioning hole corresponding to the positioning column.

More preferably, the housing further includes a ramp extending from the retaining wall in a direction away from the first cavity, the ramp is used to support the flexible circuit board and is placed in the second cavity middle.

beneficial effect

The beneficial effect of the present invention is as follows: the speaker box provided by the present invention is placed in the receiving space through one end (ie, the first connecting surface) of the solder tab embedded in the shell to connect it with the flexible circuit board, and the other end (ie, the first connecting surface) is connected to the flexible circuit board. The structure that the two connection surfaces) are placed outside the receiving space to facilitate the extraction of the connection points of the flexible circuit board, so that when the speaker box is assembled, the flexible circuit board does not need to lead out its connection points (ie, the flexible circuit board pads) through perforations, reducing the need for The assembly difficulty is improved, and the assembly efficiency is improved.

Description of drawings

FIG. 1 is a three-dimensional structural view of a speaker box of the present invention.

FIG. 2 is a perspective structural view of the housing of the present invention.

FIG. 3 is an exploded view of the speaker enclosure shown in FIG. 1 .

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 1 .

FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 1 .

FIG. 6 is a three-dimensional structural view of the soldering piece of the present invention.

FIG. 7 is an enlarged detail view at D in FIG. 1 .

Reference numerals: speaker box 100 , housing 1 , speaker unit 2 , solder tab 3 , flexible circuit board 4 , packaging mesh shell 5 , accommodation space 11 , bracket 12 , retaining wall 13 , fixed table 14 , slope table 15 , Positioning column 16, sound outlet 17, first bracket 121, second bracket 122, first cavity 111, second cavity 112, support step 131, pre-voice cavity 1111, welding part 30, first connecting surface 301, The second connection surface 302 , the legs 303 , the support portion 3031 , the extension portion 3032 , the bead 305 , the positioning hole 41 , the metal shell 51 , the first sealing washer 52 , the second sealing washer 171 , and the metal mesh 53 .

BEST MODE FOR CARRYING OUT THE INVENTION

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

This embodiment provides a speaker box. As shown in FIGS. 1-3 , the speaker box 100 includes a housing 1 , a speaker unit 2 , a soldering piece 3 , a flexible circuit board 4 and a package mesh shell 5 .

The housing 1 is an injection-molded housing with a bracket 12 inside. The bracket 12 encloses a receiving space 11 . The speaker unit 2 is electrically connected to the flexible circuit board 4 and placed in the receiving space 11 . The soldering piece 3 is made of metal. The insert injection molding process is embedded on the bracket 12 ; the solder tab 3 includes a welding part 30 passing through the bracket 12 , and the welding part 30 includes a first connection surface 301 exposed in the receiving space 11 and connected to the flexible circuit board 4 and the second connecting surface 302 exposed outside the receiving space 11, that is, the welding piece 3 is fixed on the bracket 12, and respectively protrudes from the two ends of the bracket 12, one end is located in the receiving space 11, and one end is located outside the receiving space 11 , the solder tab 3 is used as a conductor connecting the flexible circuit board 4 and the external circuit, and the processing effect of the injection molding process makes the flexible circuit board 4 and the speaker unit 2 located inside the bracket 12 in a sealed environment, avoiding the perforation technology. , the flexible circuit board 4 inside the bracket 12 and the speaker unit 2 are easily exposed to moisture or dust, which further ensures the performance stability of the speaker box 100 in the present invention, and is beneficial to prolong its service life.

In this embodiment, the bracket 12 is an annular protruding strip that protrudes from the casing 1 and is integrally formed with the casing 1 , and is a continuous strip in the form of a belt. Specifically, as shown in FIGS. 1-3 , the bracket 12 includes a first bracket 121 and a second bracket 122 , the first bracket 121 is located at the edge of the casing 1 , the second bracket 122 is located inside the casing 1 , and the first bracket 121 The first bracket 121 and the second bracket 122 are enclosed in an integral structure to form the receiving space 11 .

Further, as shown in FIGS. 1-6 , the welding piece 3 includes a welding part 30 and a supporting leg 303 , two supporting legs 303 are provided, which are respectively connected to both ends of the welding part 30 . into the housing 1. The welding portion 30 includes a first connection surface 01 and a second connection surface 302 . The welding part 30 is embedded in the bracket 12 , the first connecting surface 301 is far away from the second bracket 122 and is located on the side of the second cavity 112 to be connected to the flexible circuit board 4 , and the second connecting surface 302 passes through the second bracket 122 and extends to the outside of the accommodating space 11 and exposed to the casing 1 .

More preferably, referring to FIG. 6 , the legs 303 are bent to form a support portion 3031 and an extension portion 3032 , one end of the support portion 3031 is connected to the welding portion 30 , and the other end is connected to the extension portion 3032 . The extension part 3032 and the support part 3031 support the soldering piece 3 together to keep a certain distance between the soldering piece 3 and the housing 1 , so as to increase the operating space and facilitate soldering with the flexible circuit board 4 or other circuits.

  Referring to FIGS. 1 , 6 and 7 , the edges of the first connection surface 301 and the second connection surface 302 are covered with pressure bars 305 or pressure blocks integrally formed with the housing 1 on the solder tab. Here, the pressing bar 305 or the pressing block not only further fixes the soldering piece 3 in the casing 1, but also ensures the stability of the soldering piece 3 and the flexible circuit board 4 or other circuits in subsequent soldering.

More preferably, two or more soldering pieces 3 are provided, and each soldering piece 3 is arranged in parallel with a relative interval.

More preferably, the solder pads 3 are copper metal solder pads.

More preferably, as shown in FIG. 3 , the speaker box further includes a retaining wall 13, a fixing table 14, a ramp table 15, a positioning column 16 and a sound outlet 17. The retaining wall 13 is located in the accommodating space 11, and the retaining wall 13 will accommodate The space 11 is divided into a first cavity 111 and a second cavity 112 . Specifically, the retaining wall 13 forms the first cavity 111 in an enclosed manner, and the retaining wall 13 and the housing 1 are integrally formed. The first cavity 111 is provided with a support step 131 extending from the retaining wall 13 to the first cavity 111 . The support step 131 is used to support the speaker unit 2, and the speaker unit 2 and the housing 1 form a sounding front cavity 1111, as shown in FIG. 5 .

Further, as shown in FIGS. 3-4 , the housing 1 is provided with a fixing table 14 . Two solder pieces 3 are injection-molded at the position of the fixing table 14 of the casing 1 in parallel and spaced apart. As shown in FIG. 1-3 , the fixing table 14 is connected to the second bracket 122 and extends through the second bracket 122 to the second cavity 112 outside.

Furthermore, as shown in FIG. 2 , the receiving space 11 of the housing 1 is further provided with a ramp 15 for supporting the flexible circuit board 4 . In this embodiment, the two slope platforms 15 extend from the retaining wall 13 in a direction away from the first cavity 111 and are located in the second cavity 112 , and the two slope platforms 15 are arranged parallel to each other, as shown in FIG. 2 .

Furthermore, as shown in FIG. 2 , the accommodating space 11 of the housing 1 is further provided with a positioning column 16 for positioning and fixing the flexible circuit board 4 . In this embodiment, there are three positioning posts 16 , one is located close to the retaining wall 13 and is located in the second cavity 112 , two are located close to the first connecting surface 301 and located in the second cavity 112 , the flexible circuit board 4 The positioning holes 41 matched with the positioning columns 16 are provided on the positioning columns 16 and the positioning holes 1 to ensure the installation accuracy of the flexible circuit board 4 and the stability of the various internal structures of the speaker box 100 during use.

Further, as shown in Figures 3-5, a sound outlet 17 is formed on the casing 1 on the side close to the first cavity 111, and the sound outlet 17 communicates with the front cavity 1111 so that the front cavity 1111 and the speaker box are connected. 100 is connected to the outside world.

Specifically, as shown in FIG. 3 and FIG. 5 , the speaker unit 2 is placed on the support step 131 of the blocking wall 13 , and forms a front cavity 1111 with the housing 1 in the first cavity 111 for sound production.

Specifically, as shown in FIGS. 1-3 , one end of the flexible circuit board 4 is electrically connected to the speaker unit 2 , and the other end is welded to two parallel solder tabs 3 . The flexible circuit board 4 is provided with three positioning holes 41 , and the positioning holes 41 are sleeved on the positioning posts 16 at corresponding positions for fixing the flexible circuit board 4 .

Specifically, as shown in FIG. 3 , the packaging mesh shell 5 includes a metal shell 51 , a first sealing gasket 52 and a metal mesh 53 , and the metal shell 51 and the metal mesh 53 are sealed and connected by the first sealing gasket 52 , and the packaging mesh shell 5 For encapsulating the sound outlet hole 17 , the encapsulation mesh shell 5 is sealed with the edge of the sound outlet hole 17 through the second sealing gasket 171 .

To sum up, the speaker box provided by the present invention solves the problem of connecting the flexible circuit board with other circuits after perforation in the prior art through the solder tab embedded in the bracket, and also solves the problem of connecting the flexible circuit board with other circuits after perforation, and also through the positioning column, the positioning hole and the fixing table. The slope platform further ensures the installation accuracy of the flexible circuit board and the stability of the internal structure of the speaker box, and the utility model is convenient and quick to assemble, which greatly improves the processing efficiency of the speaker box. .

The above are only the embodiments of the present utility model. 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 utility model, but these belong to the present utility model. A new range of protection.

Claims (10)

A loudspeaker box includes a casing with an accommodation space, a speaker unit accommodated in the accommodation space, and a flexible circuit board electrically connected to the speaker unit, the casing includes a bracket forming the accommodation space, It is characterized in that: the speaker box further includes at least one welding piece embedded on the shell by a metal insert injection molding process; the welding piece includes a welding part passing through the bracket, and the welding part includes a first connecting surface inside the receiving space and connected with the flexible circuit board; and a second connecting surface exposed outside the receiving space. The loudspeaker box according to claim 1, wherein the soldering piece further comprises support legs connected to both ends of the welding portion, the support feet are formed by bending the soldering piece and embedded in the casing. The speaker box according to claim 2, wherein the support leg is bent to form a support portion and an extension portion, one end of the support portion is connected to the welding portion, and the other end is connected to the extension portion. The speaker box according to claim 1 or 3, wherein the edges of the first connecting surface and the second connecting surface are covered with a pressure strip or pressure block integrally formed with the shell on the soldering piece. The loudspeaker box according to claim 4, wherein two or more of the soldering pieces are arranged in parallel with relative intervals. The speaker box according to claim 5, wherein the soldering piece is a copper metal soldering piece. The speaker box according to claim 6, characterized in that: further comprising a retaining wall placed in the receiving space and dividing the receiving space into a first cavity and a second cavity; in the first cavity. The loudspeaker box according to claim 7, wherein the retaining wall encloses the first cavity. The speaker box according to claim 8, wherein a positioning column for positioning the flexible circuit board is provided in the accommodation space, and a positioning column corresponding to the positioning column is provided on the flexible circuit board. hole. The loudspeaker box according to claim 9, wherein the casing further comprises a slope platform extending from the retaining wall in a direction away from the first cavity, and the slope platform is used for supporting the flexible circuit plate and placed in the second cavity.