A waterproof structure of a main circuit board of a sound box

Abstract

The utility model discloses a kind of waterproof structure of main circuit board of sound box, including sound box shell, main circuit board, function key, FPC connecting line, waterproof foam double-sided adhesive and waterproof cloth, the inner wall of sound box shell is equipped with waterproof containing cavity and keyhole, main circuit board is installed in waterproof containing cavity, function key is installed in keyhole, one end of FPC connecting line is electrically connected with main circuit board, the other end of FPC connecting line is electrically connected with function key, the downside of waterproof foam double-sided adhesive is simultaneously pasted on main circuit board and waterproof containing cavity, waterproof cloth is pasted on the upside of waterproof foam double-sided adhesive, the double-sided adhesive middle hole of the double-sided adhesive of waterproof foam double-sided adhesive, one end of FPC connecting line passes through double-sided adhesive middle hole and is tightly clamped between waterproof foam double-sided adhesive and waterproof cloth.

Description

Technical Field

[0001] This utility model relates to the field of speaker technology, and in particular to a waterproof structure for the main circuit board of a speaker. Background Technology

[0002] A speaker is a device that converts audio signals into sound. A speaker typically includes a speaker housing, a main circuit board, a speaker, and function keys. The main circuit board is installed inside the speaker housing, and the function keys are electrically connected to the main circuit board via wires or FPC cables to control the operation of the speaker.

[0003] In the prior art, the inside of the speaker housing is usually provided with a circuit board mounting part for mounting the main circuit board. The circuit board mounting part is usually not exposed to the outside. Therefore, the speaker housing itself can prevent external moisture from directly entering the main circuit board.

[0004] However, the speaker's various function keys, especially the touch keys, need to be exposed for users to press or touch control. During use, external moisture or sweat from fingers may enter the speaker housing from the function key locations and then reach the main circuit board. In addition, external moisture may also enter the speaker housing from other gaps and then reach the main circuit board. After prolonged use, the main circuit board is easily damaged by external moisture. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a waterproof structure for the main circuit board of a speaker, which can prevent moisture that has entered the speaker housing from re-entering the main circuit board.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a waterproof structure for the main circuit board of a speaker, including a speaker shell, a main circuit board, function keys, an FPC connecting cable, waterproof foam double-sided adhesive, and a waterproof cloth. The inner wall of the speaker shell is provided with a waterproof accommodating cavity and key holes. The main circuit board is installed inside the waterproof accommodating cavity, and the function keys are installed inside the key holes. One end of the FPC connecting cable is electrically connected to the main circuit board, and the other end of the FPC connecting cable is electrically connected to the function keys. The lower side of the waterproof foam double-sided adhesive is attached to both the main circuit board and the waterproof accommodating cavity. The waterproof cloth is attached to the upper side of the waterproof foam double-sided adhesive. The waterproof foam double-sided adhesive has a central hole. One end of the FPC connecting cable passes through the central hole and is tightly clamped between the waterproof foam double-sided adhesive and the waterproof cloth.

[0007] In the above technical solution, the waterproof accommodating cavity is a square cavity, and a first screw hole is provided at the four corners of the waterproof accommodating cavity. The shape of the main circuit board matches the shape of the waterproof accommodating cavity. A first connecting hole corresponding to the first screw hole is provided at the four corners of the main circuit board. A first screw is provided in the first connecting hole. The first screw passes through the first connecting hole and is screwed into the first screw hole, so that the main circuit board is fixed to the waterproof accommodating cavity.

[0008] In the above technical solution, the waterproof structure of the main circuit board of the speaker also includes a function key fixing component. The function key fixing component is located inside the function key. A second screw hole is provided on both sides of the key hole. The function key fixing component is provided with two second connecting holes corresponding to the second screw holes. A second screw is provided inside the second connecting hole. The second screw passes through the second connecting hole and is screwed into the second screw hole, so that the function key fixing component fixes the function key.

[0009] In the above technical solution, the function keys, FPC connecting lines and function key fixing components are provided in four sets, and the four sets of function keys and function key fixing components are respectively located outside the four sides of the waterproof accommodating cavity.

[0010] In the above technical solution, the function key is a touch key.

[0011] The beneficial effects of this utility model are as follows: Because the inner wall of the speaker housing is provided with a waterproof cavity, and the main circuit board is installed within this cavity, the waterproof cavity not only secures the main circuit board but also provides excellent sealing and waterproofing for its perimeter and underside. Furthermore, because the utility model incorporates waterproof foam double-sided adhesive and a waterproof cloth, with the lower side of the waterproof foam double-sided adhesive attached to both the main circuit board and the waterproof cavity, and the waterproof cloth attached to the upper side of the waterproof foam double-sided adhesive, these components effectively seal and waterproof the main circuit board and the upper side of the waterproof cavity, preventing moisture from entering the speaker housing from re-entering the main circuit board. Finally, because the waterproof foam double-sided adhesive has a central hole through which one end of the FPC connecting cable passes and is tightly clamped between the waterproof foam double-sided adhesive and the waterproof cloth, sweat is prevented from seeping into the main circuit board along the surface of the FPC connecting cable. Attached Figure Description

[0012] Figure 1 This is a first-person view of the overall structure of this utility model.

[0013] Figure 2 This is a second-view structural diagram of the present invention.

[0014] Figure 3 This is a diagram of the dispersed structure of this utility model.

[0015] In the diagram: 1. Speaker housing; 11. Waterproof cavity; 111. First screw hole; 12. Key hole; 121. Second screw hole; 2. Main circuit board; 21. First connection hole; 3. Function key; 4. FPC connection cable; 5. Waterproof foam double-sided tape; 51. Center hole of double-sided tape; 6. Waterproof cloth; 7. First screw; 8. Function key fixing piece; 81. Second connection hole; 9. Second screw; 10. NFC sensor. Detailed Implementation

[0016] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] like Figures 1-3 As shown, this utility model is a waterproof structure for the main circuit board of a speaker, including a speaker housing 1, a main circuit board 2, function keys 3, an FPC connecting cable 4, waterproof foam double-sided adhesive 5, and a waterproof cloth 6. The inner wall of the speaker housing 1 is provided with a waterproof accommodating cavity 11 and key holes 12. The main circuit board 2 is installed inside the waterproof accommodating cavity 11, and the function keys 3 are installed inside the key holes 12. One end of the FPC connecting cable 4 is electrically connected to the main circuit board 2, and the other end of the FPC connecting cable 4 is electrically connected to the function keys 3. The lower side of the waterproof foam double-sided adhesive 5 is attached to both the main circuit board 2 and the waterproof accommodating cavity 11. The waterproof cloth 6 is attached to the upper side of the waterproof foam double-sided adhesive 5. The waterproof foam double-sided adhesive 5 has a double-sided adhesive hole 51. One end of the FPC connecting cable 4 passes through the double-sided adhesive hole 51 and is tightly clamped between the waterproof foam double-sided adhesive 5 and the waterproof cloth 6. This invention features a waterproof cavity 11 within the inner wall of the speaker housing 1, where the main circuit board 2 is installed. The waterproof cavity 11 not only secures the main circuit board 2 but also provides excellent sealing and waterproofing around and below it. Furthermore, the invention incorporates waterproof foam double-sided adhesive 5 and a waterproof cloth 6. The lower side of the waterproof foam double-sided adhesive 5 adheres to both the main circuit board 2 and the waterproof cavity 11, while the waterproof cloth 6 adheres to the upper side of the waterproof foam double-sided adhesive 5. This combination effectively seals and waterproofs the upper side of the main circuit board 2 and the waterproof cavity 11, preventing moisture from entering the speaker housing 1 from re-entering the main circuit board 2. Finally, the waterproof foam double-sided adhesive 5 has a central hole 51 through which one end of the FPC connecting cable 4 passes and is tightly clamped between the waterproof foam double-sided adhesive 5 and the waterproof cloth 6. This prevents sweat from seeping into the main circuit board 2 along the surface of the FPC connecting cable 4.

[0018] like Figure 1 and Figure 3As shown, the waterproof accommodating cavity 11 is a square cavity. First screw holes 111 are provided at the four corners of the waterproof accommodating cavity 11. The shape of the main circuit board 2 matches the shape of the waterproof accommodating cavity 11. First connecting holes 21, corresponding to the first screw holes 111, are provided at the four corners of the main circuit board 2. First screws 7 are provided inside the first connecting holes 21, passing through the first connecting holes 21 and screwed into the first screw holes 111, thus fixing the main circuit board 2 to the waterproof accommodating cavity 11. This invention also provides an NFC sensor 10 in the middle of the waterproof accommodating cavity 11. The NFC sensor 10 is electrically connected to the main circuit board 2. The waterproof structure of the main circuit board of this invention also serves to waterproof the NFC sensor 10.

[0019] like Figure 1 and Figure 3 As shown, the waterproof structure of the speaker's main circuit board also includes a function key fixing component 8. The function key fixing component 8 is located inside the function key 3. Second screw holes 121 are respectively provided on both sides of the key hole 12. The function key fixing component 8 has two second connecting holes 81 corresponding to the second screw holes 121. A second screw 9 is provided inside the second connecting hole 81, passing through the second connecting hole 81 and screwed into the second screw hole 121, thus fixing the function key 3 in place. There are four sets of function keys 3, FPC connecting wires 4, and function key fixing components 8, located on the four sides of the waterproof accommodating cavity 11. Furthermore, while fixing the function key 3, the function key fixing component 8 can also press and seal the key hole 12, further improving the waterproof effect.

[0020] like Figure 1 and Figure 3 As shown, in a preferred embodiment of this utility model, the function key 3 is a touch key.

[0021] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A waterproof structure for the main circuit board of a speaker, characterized in that: The speaker enclosure includes a speaker housing (1), a main circuit board (2), function keys (3), an FPC connecting cable (4), waterproof foam double-sided tape (5), and a waterproof cloth (6). The inner wall of the speaker housing (1) is provided with a waterproof accommodating cavity (11) and key holes (12). The main circuit board (2) is installed inside the waterproof accommodating cavity (11), and the function keys (3) are installed inside the key holes (12). One end of the FPC connecting cable (4) is electrically connected to the main circuit board (2). The other end of the wire (4) is electrically connected to the function key (3). The lower side of the waterproof foam double-sided adhesive (5) is simultaneously attached to the main circuit board (2) and the waterproof accommodating cavity (11). The waterproof cloth (6) is attached to the upper side of the waterproof foam double-sided adhesive (5). The waterproof foam double-sided adhesive (5) has a double-sided adhesive hole (51). One end of the FPC connecting wire (4) passes through the double-sided adhesive hole (51) and is tightly clamped between the waterproof foam double-sided adhesive (5) and the waterproof cloth (6).

2. The waterproof structure of the main circuit board of the speaker according to claim 1, characterized in that: The waterproof accommodating cavity (11) is a square cavity. The four corners of the waterproof accommodating cavity (11) are provided with first screw holes (111). The shape of the main circuit board (2) matches the shape of the waterproof accommodating cavity (11). The four corners of the main circuit board (2) are provided with first connecting holes (21) corresponding to the first screw holes (111). The first screw is provided in the first connecting hole (21). The first screw passes through the first connecting hole (21) and is screwed into the first screw hole (111) so that the main circuit board (2) is fixed to the waterproof accommodating cavity (11).

3. The waterproof structure of the main circuit board of the speaker according to claim 2, characterized in that: It also includes a function key fixing member (8), which is located inside the function key (3). The key hole (12) has a second screw hole (121) on each side. The function key fixing member (8) has two second connecting holes (81) corresponding to the second screw hole (121). A second screw (9) is provided inside the second connecting hole (81). The second screw (9) passes through the second connecting hole (81) and is screwed into the second screw hole (121) so that the function key fixing member (8) fixes the function key (3).

4. The waterproof structure of the main circuit board of the speaker according to claim 3, characterized in that: The function key (3), FPC connecting line (4) and function key fixing member (8) are provided in four sets, and the four sets of function keys (3) and function key fixing members (8) are respectively located outside the four sides of the waterproof accommodating cavity (11).

5. The waterproof structure of the main circuit board of the speaker according to claim 1, characterized in that: The function key (3) is a touch key.

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