CN218387879U - Electroacoustic device and circuit board end cover thereof - Google Patents

Abstract

The utility model provides an electroacoustic device and circuit board end cover thereof, electroacoustic device contain shroud, electroacoustic unit and circuit board end cover. The end face of the cover cap is provided with a concave part and a first combining part. The electroacoustic unit is fixed in the concave part. The circuit board end cover completely covers the concave part and comprises a wiring board module, an elastic conductive piece and a second combining part. The elastic conductive member electrically connects the wiring board module and the electroacoustic unit. The second bonding portion is located on the wiring board module and connected to the first bonding portion. Through above framework, the utility model discloses can simplify electroacoustic device's structure, effectively shorten electroacoustic device's whole thickness, save material with shorten man-hour to improve the market competition of product.

Description

Electroacoustic device and circuit board end cover thereof

Technical Field

The present invention relates to an end cap of an electroacoustic device, and more particularly, to a circuit board end cap of an electroacoustic device.

Background

Generally, an electroacoustic component such as a moving coil speaker (dynamic speaker) is generally soldered to a circuit board through a plastic bottom cover thereof by a Surface Mount Technology (SMT), so that a sound is generated through a line of the circuit board.

However, under the trend of light, thin, short and small appearance in the industry, the industry is demanding to improve the thickness of the electroacoustic device, save materials and shorten the working hours, thereby improving the market competitiveness of the product.

It is clear that the above-mentioned techniques still have inconveniences and drawbacks, and need further improvement. Therefore, how to effectively solve the above inconvenience and defects is one of the important research and development issues, and is also an urgent need for improvement in the related art.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an electroacoustic device and a circuit board end cap thereof for solving the above mentioned difficulties of the prior art.

An embodiment of the utility model provides an electroacoustic device. The electroacoustic device comprises a cover, an electroacoustic unit and a circuit board end cover. The end face of the cover cap is provided with a concave part and a first combining part. The electroacoustic unit is fixed in the concave part. The circuit board end cover completely covers the concave part and comprises a wiring board module, at least one elastic conductive piece and a second combining part. The elastic conductive piece is fixed on the wiring board module and electrically connected with the wiring board module and the electroacoustic unit. The second bonding portion is located on the wiring board module and connected to the first bonding portion.

According to one or more embodiments of the present invention, the wiring board module includes a wiring board body, at least one first contact, at least one second contact and a wiring circuit. The wiring board body has a first face and a second face opposite to each other, the first face is bonded to an end face of the cover through an adhesive layer, and completely covers the recess. The first contact is formed on the first surface and connected with the elastic conductive piece. The second contact is formed on the second surface. The wiring circuit penetrates through the wiring board body and is respectively connected with the first contact and the second contact.

According to the utility model discloses one or more embodiments, the first face district of distribution plate body has circuit district and encircles the groove, and wiring circuit disposes in circuit district, and encircles the groove and encircle the circuit district. The end face of the cover extends partly outwardly of the flange, through which the end cap is assembled to the cover, into the surrounding groove.

According to one or more embodiments of the present invention, the first connecting portion is located on the flange of the cover, the second connecting portion is located on the bottom surface of the surrounding groove of the wiring board, the second connecting portion is complementary to the first connecting portion, and the first connecting portion and the second connecting portion are respectively a concave portion structure and a convex portion structure, wherein the concave portion structure is inserted through the convex portion structure, and the circuit board end cover is fixedly connected to the cover.

According to one or more embodiments of the present invention, the circuit board end cover further includes a side frame unit. The side frame unit is fixed between the cover and the wiring board module, and the second combining part is formed on the side frame unit.

According to one or more embodiments of the present invention, the wiring board module includes a wiring board body, at least one first contact, at least one second contact and a wiring circuit. The wiring board body has a first surface and a second surface opposite to each other, and the first surface is integrally joined to the side frame unit. The first contact is formed on the first surface and connected with the elastic conductive piece. The second contact is formed on the second surface. The wiring circuit penetrates through the wiring board body and is respectively connected with the first contact and the second contact.

According to the utility model discloses one or more embodiments, the first mask of distribution plate body has circuit district and encircles the groove. The wiring circuit is arranged in the circuit area and surrounds the circuit area around the groove, and the side frame unit is fixed in the surrounding groove and surrounds the circuit area.

According to one or more embodiments of the invention, the end surface of the cover partially protrudes outwardly beyond the flange. The side frame unit surrounds an inner space capable of accommodating the wiring area. Thus, the circuit board end cap is assembled to the cover cap by the flange extending into the interior space.

According to the utility model discloses one or more embodiments, first joint portion forms in the inboard of flange, and the second joint portion forms in the inner wall of side frame unit towards the inner space, and the second joint portion is complementary with first joint portion shape, and first joint portion and second joint portion are concave part structure and convex part structure respectively, inserts concave part structure through the convex part structure, circuit board end cover fixed connection shroud.

According to one or more embodiments of the present invention, the maximum width of the wiring board module is equal to the maximum width of the cover.

According to one or more embodiments of the present invention, the electroacoustic unit is one of a speaker, a microphone and a buzzer.

According to one or more embodiments of the present invention, the elastic conductive member is one of a spring and a resilient plate.

An embodiment of the utility model provides a circuit board end cover. The circuit board end cover is suitable for covering a cover of the electroacoustic device and conducting the electroacoustic unit in the cover. The circuit board end cover comprises a wiring board module, at least one elastic conductive piece and a combining part. The elastic conductive piece is fixed on the wiring board module and electrically connected with the wiring board module. The combining part is positioned on the wiring board module and is used for connecting the cover.

According to one or more embodiments of the present invention, the wiring board module includes a wiring board body, at least one first contact, at least one second contact and a wiring circuit. The wiring board body has a first surface and a second surface opposite to each other. The first contact is formed on the first surface and connected with the elastic conductive piece. The second contact is formed on the second surface. The wiring circuit penetrates through the wiring board body and is respectively connected with the first contact and the second contact.

According to the utility model discloses one or more embodiments, the first mask of distribution plate body has circuit district and encircles the groove, and wiring circuit disposes in the circuit district, and encircles the groove and encircle the circuit district.

According to one or more embodiments of the present invention, the joint portion is located on the bottom surface of the wiring board body surrounding the groove.

According to one or more embodiments of the present invention, the circuit board end cover further includes a side frame unit. The side frame unit is fixed in the surrounding groove and surrounds the circuit area, the side frame unit further surrounds an inner space capable of accommodating the circuit area, and the combining portion is formed on the side frame unit.

According to one or more embodiments of the present invention, the joint portion is formed on the inner wall of the side frame unit facing the inner space.

According to the utility model discloses one or more embodiments, the maximum width of wiring board module equals the maximum width of shroud.

According to one or more embodiments of the present invention, the elastic conductive member is one of a spring and a resilient plate.

So, through above framework, the utility model discloses can simplify electroacoustic device's structure, effectively shorten electroacoustic device's whole thickness, save material with shorten man-hour to improve the market competition of product.

The above description is only for the purpose of illustrating the problems to be solved, the technical means for solving the problems, the efficacy of the invention, and the like, and the details of the invention will be described in detail in the following embodiments and the related drawings.

Drawings

In order to make the aforementioned and other objects, features, advantages and embodiments of the invention more comprehensible, the following description is given:

fig. 1 is a perspective view of an electroacoustic device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line AA in FIG. 1;

fig. 3A is an exploded view of the electro-acoustic device of fig. 1;

FIG. 3B is an exploded view of the electro-acoustic device of FIG. 1 from another viewing angle;

fig. 4 is an exploded view of an electro-acoustic apparatus according to an embodiment of the present invention;

fig. 5 is a perspective view of an electroacoustic device according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line BB of FIG. 5;

FIG. 7 is an exploded view of the circuit board end cap of FIG. 6;

fig. 8 is a cross-sectional view of an electro-acoustic apparatus according to an embodiment of the present invention; and

fig. 9 is an exploded view of a circuit board end cap according to an embodiment of the present invention.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in various embodiments of the present invention, these implementation details are not necessary. In addition, some conventional structures and elements are shown in simplified schematic form in the drawings.

Fig. 1 is a perspective view of an electroacoustic device 10 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view taken along line AA of fig. 1. Fig. 3A is an exploded view of the electro-acoustic device 10 of fig. 1. Fig. 3B is an exploded view of the electro-acoustic device 10 of fig. 1 from another perspective. As shown in fig. 1 and 2, in the present embodiment, the electroacoustic device 10 includes a cover 100, an electroacoustic unit 200, and a circuit board end cap 300. One end of the cover cap 100 is a closed end 101, and the end surface 102 of the other end has a recess 110 and a first engaging portion 130 (fig. 3B). The electroacoustic unit 200 is fixed in the recess 110, for example, the electroacoustic unit 200 is fixed on the position-limiting structure 111 in the recess 110 by adhesion or fastening. The circuit board end cap 300 completely covers the recess 110, and the circuit board end cap 300 is completely located outside the recess 110, or at least partially located outside the recess 110, so as to jointly enclose the recess 110 with the cover cap 100. Further, the circuit board end cap 300 electrically connects the electro-acoustic unit 200 so that the electro-acoustic unit 200 can sound by the driving of the wiring board module 400.

More specifically, the circuit board end cap 300 includes a wiring board module 400, one or more (e.g., 2) elastic conductive members 481, and a second coupling portion 460 (fig. 3A). The elastic conductive member 481 electrically connects the wiring board module 400 and the electroacoustic unit 200. The second coupling portion 460 is located on the wiring board module 400. Therefore, when the second coupling portion 460 is connected to the first coupling portion 130, the circuit board end cap 300 is assembled to the end surface 102 of the cover cap 100.

The wiring board module 400 includes a wiring board body 410, one or more (e.g., 2) first contacts 430, one or more (e.g., 2) second contacts 440, and a wiring circuit 450. The wiring board body 410 includes a first surface 411 and a second surface 412 opposite to each other. The first surface 411 is coupled to the end surface 102 of the cover 100 by a coupling feature (e.g., a screw or an adhesive) to completely cover the recess 110. The first contact 430 is formed on the first surface 411 and connected to the elastic conductive member 481. Second contacts 440 are formed on second face 412. The wiring circuit 450 is disposed through the wiring board 410 and is connected to the first contact 430 and the second contact 440, respectively. The first contact 430 and the second contact 440 are pads on a circuit board, for example. One end of the elastic conductive member 481 is soldered to the first contact 430, and the other end thereof directly abuts against an electrical terminal (not shown) of the electroacoustic unit 200 without using solder, thereby solving the conventional problems of high process difficulty, high working time cost, poor quality stability and the like caused by wire soldering or metal member connection.

Furthermore, in the present embodiment, the wiring board 410 includes a plurality of stacked layer bodies (not shown), and the wiring circuit 450 includes a plurality of traces 451 and through-leads 452 (VIA) for respectively connecting the first contacts 430 and the second contacts 440. The wiring board 410 is, for example, a heat-resistant glass fiber board that can withstand high-temperature baking in a reflow furnace.

In the present embodiment, the wiring board 410 is a double-sided copper-clad circuit board, and the first contact 430 and the second contact 440 are pads on the circuit board, respectively. The cover 100 is also cylindrical, the wiring board 410 is discoid, and the circumferential surface 413 of the wiring board 410 is located between the first surface 411 and the second surface 412, surrounds the first surface 411 and the second surface 412, and connects the first surface 411 and the second surface 412. The maximum width W of the wiring board module 400 is substantially equal to the maximum width W of the cover 100. However, the present invention is not limited thereto. However, the present invention is not limited to the type, shape, material and fixing characteristics of the wiring board 410.

In addition, in the present embodiment, the first surface 411 of the circuit board body 410 is divided into a circuit area 411A and a surrounding area 411B. The surrounding area 411B completely surrounds the line area 411A. The wiring circuit 450 is disposed only in the area of the circuit area 411A, but not in the area of the surrounding area 411B. The distribution board body 410 also has a surrounding slot 420. The surrounding groove 420 is recessed in the surrounding area 411B of the first surface 411, and the surrounding groove 420 and the circuit area 411A have different plane heights. For example, the range of the surrounding groove 420 is equal to the range of the surrounding area 411B, and the surrounding groove 420 connects the circuit area 411A and the circumferential surface 413 of the wiring board body 410, however, the present invention is not limited thereto. End face 102 of cover 100 partially projects outwardly of flange 120, flange 120 being, for example, annular in shape. In this manner, when the flange 120 extends into the surrounding groove 420, the end cap can be assembled to the cap 100 such that the end cap covers the recess 110 of the cap 100.

In the present embodiment, the first combining portion 130 is disposed on the flange 120 of the cover cap 100, the second combining portion 460 is disposed on the bottom surface 421 of the surrounding groove 420 of the wiring board body 410, and the second combining portion 460 and the first combining portion 130 have a complementary shape. In this embodiment, the first coupling portion 130 is a protrusion structure integrally formed on a side of the flange 120 of the cap 100 opposite to the closed end 101. The second coupling portion 460 has a concave structure. The concave structure is, for example, a through hole connecting the bottom 421 of the surrounding groove 420 and the second surface 412 of the wiring board 410, however, the present invention is not limited thereto, and the second combining portion 460 may also be a blind hole. Thus, when the circuit board end cap 300 covers the cover 100, the circuit board end cap 300 can be fixed on the cover 100 without easily detaching from the cover 100 by inserting the protrusion structure into the recess structure.

In one embodiment, the electroacoustic unit 200 is a buzzer (e.g., a piezoelectric buzzer or an electromagnetic buzzer), however, the present invention is not limited to the type of the electroacoustic unit 200, and in other embodiments, the electroacoustic unit 200 may be a speaker (e.g., a moving coil speaker, a dynamic microphone or a metal diaphragm) or a microphone.

In one embodiment, if the material characteristics of the cover 100 and the electroacoustic unit 200 cannot withstand the high temperature baking of the reflow oven and may cause damage, the assembly sequence of the electroacoustic device 10 of this embodiment is substantially as follows. After the first contact 430 of the wiring board body 410 is printed with solder paste by the SMT automatic component printing machine, the elastic conductive member 481 is vertically placed on the solder paste, so that the advantages of labor hour saving, simple process, high productivity, stable quality and the like can be provided; then, the wiring board module 400 is sent into a reflow furnace, and the solder paste is melted by the high-temperature baking of the reflow furnace, so that the elastic conductive member 481 is soldered to the first contact 430. Next, after the electroacoustic element 200 is fixed in the recess 110, the circuit board end cap 300 is directly covered on the end surface 102 of the cover 100, so that the elastic conductive member 481 can just and directly abut against an electrical terminal (not shown) of the electroacoustic element 200, thereby completing the electroacoustic device 10 of the present embodiment. However, the present invention is not limited thereto.

In one embodiment, the sounding body of the electroacoustic component can be produced by adopting standard materials and standard processes without selecting high-temperature materials and special processes which need to bear the temperature of a reflow oven. Therefore, if the material characteristics of the wiring board 410, the cover 100 and the sounding body of the electroacoustic unit 200 can withstand the high temperature baking of the reflow oven without being damaged, the assembled electroacoustic device 10 can be directly fed into the reflow oven without baking to assemble the wiring board module 400 and the cover 100, thereby simplifying the procedure and reducing the manufacturing cost.

Fig. 4 is an exploded view of the electroacoustic device 11 according to an embodiment of the present invention. As shown in fig. 4, the electroacoustic device 11 of the present embodiment is substantially the same as the electroacoustic device 10 (fig. 3B) of the previous embodiment, except that the first engaging portion 140 is a concave structure formed on the flange 120 of the end surface 102 of the cover 100. The second combining portion 470 is a convex portion structure integrally formed on the bottom 421 of the surrounding groove 420 and connected to the circuit area 411A, so that the convex portion structure and the circuit area 411A have the same plane height. Thus, when the circuit board end cap 301 covers the cover 100, the circuit board end cap 301 can be fixed on the cover 100 by inserting the protrusion structure into the recess structure, and cannot be easily separated from the cover 100.

In addition, unlike the spring, the elastic conductive members 481 of the electroacoustic device 10 (fig. 3A) of the previous embodiment are springs (such as tower springs or helical springs) whose long axis direction L is perpendicular to the first surface 411 of the wiring board 410, and the elastic conductive members 482 of the present embodiment are elastic pieces, such as lateral elastic pieces with tilted arms, and gradually get away from the first surface 411 of the wiring board 410 toward the cover 100.

Fig. 5 is a perspective view of the electroacoustic device 12 according to an embodiment of the present invention. Fig. 6 is a cross-sectional view taken along line BB of fig. 5. Fig. 7 is an exploded view of the circuit board end cap 302 of fig. 6. As shown in fig. 5 to 7, the electroacoustic device 12 of the present embodiment is substantially the same as the electroacoustic device 10 (fig. 1) of the previous embodiment, except that the circuit board cover 302 further includes a side frame unit 500. The side frame unit 500 is provided on the side of the wiring board module 401 facing the cover 100, and covers the end face 102 of the cover 100 together with the wiring board module 401 such that the side frame unit 500 is fixed between the cover 100 and the wiring board module 401 (fig. 6).

More specifically, one side of the side frame unit 500 is fixed in the surrounding groove 420 of the wiring board body 410 and completely surrounds the wiring area 411A. Therefore, the side frame unit 500 surrounds the inner space 510 capable of accommodating the circuit area 411A. The side frame unit 500 is integrally joined to the wiring board body 410.

For example, the side frame unit 500 is bonded to the first surface 411 of the wiring board 410 by insert molding (insert molding). Further, the wiring board body 410 has a glue fixing groove 422. The glue fixing groove 422 is formed on the bottom surface 421 of the wiring board 410 surrounding the groove 420, in this embodiment, the glue fixing groove 422 is, for example, a through hole connecting the bottom surface 421 surrounding the groove 420 and the second surface 412 of the wiring board 410, however, the present invention is not limited thereto, and the glue fixing groove 422 may also be a blind hole. Thus, when the wiring board 410 is subjected to the insert-injection process, the side frame unit 500 is formed on the wiring board 410, and a portion 501 of the side frame unit flows into the glue-fixing groove 422, so as to improve the bonding strength of the side frame unit 500 attached to the wiring board 410, and the side frame unit is not easily detached from the wiring board 410.

In the present embodiment, the first coupling portion 150 is disposed at the flange 120 of the cover 100. The second coupling portion 520 is formed on the side frame unit 500, not on the wiring board module 401. Circuit board end cap 302 is assembled to cover 100 by flange 120 extending into interior space 510.

More specifically, the first coupling portion 150 is formed at an inner side of the flange 120 facing the recess 110. The second coupling portion 520 is formed at an inner wall of the side frame unit 500 facing the inner space 510, and the second coupling portion 520 is complementary in shape to the first coupling portion 150. Therefore, the circuit board end cap 302 is fixedly connected to the cover cap 100 by the mutual coupling of the first combining portion 150 and the second combining portion 520. In the present embodiment, the first coupling portion 150 is a convex structure. The protrusion structure is integrally formed on the inner side of the flange 120 facing the recess 110. The second coupling portion 520 has a concave structure. The concave structure is formed on the inner wall of the side frame unit 500 facing the inner space 510, however, the present invention is not limited thereto. Thus, when the circuit board cover 302 covers the cover 100, the circuit board cover 302 can be fixed on the cover 100 by inserting the protrusion into the recess, and cannot be easily separated from the cover 100.

In addition, the cover 100 has a plurality of sound outlet holes 170. The sound outlet holes 170 are formed on the closed end 101 and communicate with the recess 110 to outwardly emit the sound of the electroacoustic unit 200.

Fig. 8 is a cross-sectional view of an electroacoustic device 13 according to an embodiment of the present invention. As shown in fig. 8, the electroacoustic device 13 of the present embodiment is substantially the same as the electroacoustic device 12 (fig. 7) of the previous embodiment, except that in the present embodiment, the first combining portion 160 is a concave structure, and the concave structure is formed on the inner side of the flange 120 facing the recess 110 and surrounds the recess 110. The second coupling portion 530 has a convex structure. The protrusion is integrally formed to protrude from the inner wall of the side frame unit 500 facing the inner space 510 and surround the inner space 510. Thus, when the circuit board cover 302 covers the cover 100, the circuit board cover 302 can be fixed on the cover 100 by inserting the protrusion structure into the recess structure, and cannot be easily separated from the cover 100.

Fig. 9 is an exploded view of the circuit board end cap 303 according to an embodiment of the present invention. As shown in fig. 9, the circuit board end cap 303 of the present embodiment is substantially the same as the circuit board end cap 302 (fig. 7) of the previous embodiment, except that in the present embodiment, the circuit board end cap 303 has the glue fixing ribs 423. The glue fixing rib 423 is integrally formed on the bottom 421 of the surrounding groove 420 and connected to the circuit area 411A, so that the glue fixing rib 423 and the circuit area 411A have the same plane height. Thus, when the wiring board 410 is embedded and injected, the side frame unit 500 is formed on the wiring board 410, and a portion 502 of the side frame unit flows into the surrounding groove 420 and covers the glue fixing rib 423, so as to improve the bonding strength of the side frame unit 500 attached to the wiring board 410, and the side frame unit is not easy to be separated from the wiring board 410.

So, through above framework, the utility model discloses can simplify electroacoustic device's structure, effectively shorten electroacoustic device's whole thickness, save material with shorten man-hour to improve the market competition of product.

Finally, the above-described embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the claims.

[ description of symbols ]

10-13 electroacoustic device

100: cover

101: closed end

102 end face

110 concave part

111: limit structure

120: flange

130. 140, 150, 160 first joint part

170 sound outlet

200 electroacoustic unit

300-303 circuit board end cover

400. 401 wiring board module

410 wiring board

411 first side

411A line area

411B surrounding area

412 second side

413 circumferential surface

420 surrounding groove

421 the bottom surface

422 glue fixing groove

423 convex ribs for fixing glue

430 first contact

440 second contact

450: wiring circuit

451: routing

452 penetration guide connection part

460. 470 second combining part

481. 482 elastic conductive member

500 side frame unit

501. 502 part (A)

510 inner space

520. 530 second joining part

AA. BB line segment

W is maximum width

L is the long axis direction.

Claims (20)

1. An electro-acoustic apparatus, comprising:

the end face of the cover cap is provided with a concave part and a first combining part;

an electroacoustic unit fixed in the recess; and

a circuit board end cap completely covering the recess, comprising:

a wiring board module;

at least one elastic conductive piece fixed on the distribution board module and electrically connected with the distribution board module and the electroacoustic unit; and

a second combining part located on the wiring board module and connected to the first combining part.

2. The electro acoustic apparatus in accordance with claim 1, wherein said patch panel module comprises:

a wiring board body having a first face and a second face opposite to each other, the first face being bonded to the end face of the cover through an adhesive layer and completely covering the recess;

at least one first contact point formed on the first surface and connected with the elastic conductive piece;

at least one second contact formed on the second surface; and

and the wiring circuit penetrates through the wiring board body and is respectively connected with the first contact and the second contact.

3. The electro-acoustic apparatus as claimed in claim 2, wherein the first surface of the wiring board body is divided into a wiring area and a surrounding groove, the wiring circuit is disposed in the wiring area, and the surrounding groove surrounds the wiring area; and

the end face of the cover partially projects outwardly of a flange through which the end cap is assembled to the cover into the surrounding groove.

4. The electro-acoustic apparatus in accordance with claim 3, wherein said first engaging portion is located at said flange of said cover, said second engaging portion is located at a bottom surface of said surrounding groove of said wiring board, said second engaging portion is complementary in shape to said first engaging portion, and said first engaging portion and said second engaging portion are respectively a concave structure and a convex structure, wherein said circuit board end cap is fixedly connected to said cover by inserting said convex structure into said concave structure.

5. The electro acoustic device in accordance with claim 1, wherein said circuit board end cap further comprises:

and a side frame unit fixed between the cover and the wiring board module, wherein the second combining part is formed on the side frame unit.

6. The electro acoustic apparatus in accordance with claim 5, wherein said patch panel module comprises:

a wiring board body having a first surface and a second surface opposite to each other, the first surface integrally joining the side frame unit;

at least one first contact point formed on the first surface and connected to the elastic conductive member;

at least one second contact formed on the second surface; and

and the wiring circuit penetrates through the wiring board body and is respectively connected with the first contact and the second contact.

7. The electro-acoustic apparatus in accordance with claim 6, wherein said first surface of said wiring board body has a circuit area and a surrounding groove, said wiring circuit is disposed in said circuit area, and said surrounding groove surrounds said circuit area, said side frame unit is fixed in said surrounding groove and surrounds said circuit area.

8. The electro-acoustic apparatus in accordance with claim 7, wherein said end face of said cover partially protrudes outward beyond a flange, said side frame unit surrounding an inner space capable of accommodating said wiring section, wherein said circuit board cover is combined to said cover by protruding into said inner space through said flange.

9. The electro acoustic device in accordance with claim 8, wherein said first engaging portion is formed on an inner side of said flange, said second engaging portion is formed on an inner wall of said side frame unit facing said inner space, said second engaging portion is complementary in shape to said first engaging portion, and said first engaging portion and said second engaging portion are a concave portion structure and a convex portion structure, respectively, wherein said circuit board end cap is fixedly connected to said cover cap by inserting said convex portion structure into said concave portion structure.

10. The electro acoustic device in accordance with claim 1, wherein a maximum width of the wiring board module is equal to a maximum width of the cover.

11. The electro-acoustic apparatus in accordance with claim 1, wherein said electro-acoustic unit is one of a speaker, a microphone and a buzzer.

12. The electro-acoustic apparatus in accordance with claim 1, wherein said elastic conductive member is one of a spring and a leaf spring.

13. A circuit board end cap adapted to cover a cover of an electro-acoustic device and to conduct an electro-acoustic element within the cover, the circuit board end cap comprising:

a wiring board module;

at least one elastic conductive piece fixed on the distribution board module and electrically connected with the distribution board module; and

a connection part located on the wiring board module for connecting the cover.

14. The circuit board end cap of claim 13, wherein the patch panel module comprises:

a wiring board body having a first surface and a second surface opposite to each other;

at least one first contact point formed on the first surface and connected with the elastic conductive piece;

at least one second contact formed on the second surface; and

and the wiring circuit penetrates through the wiring board body and is respectively connected with the first contact and the second contact.

15. The circuit board end cap of claim 14, wherein the first surface of the wiring board body has a wiring area and a surrounding groove, the wiring circuit is disposed in the wiring area, and the surrounding groove surrounds the wiring area.

16. The circuit board end cap of claim 15, wherein the engaging portion is located on a bottom surface of the surrounding groove of the wiring board body.

17. The circuit board end cap of claim 15, further comprising:

and the side frame unit is fixed in the surrounding groove, surrounds the circuit area, surrounds an inner space capable of accommodating the circuit area, and is formed on the side frame unit.

18. The circuit board end cap of claim 17, wherein the engaging portion is formed on an inner wall of the side frame element facing the inner space.

19. The circuit board end cap of claim 13, wherein the maximum width of the patch panel module is equal to the maximum width of the cover cap.

20. The circuit board end cap of claim 13, wherein the resilient conductive member is one of a spring and a leaf spring.

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