PCBA (Printed Circuit Board Assembly) control panel mounting structure of sound box

Abstract

The utility model discloses a PCBA control panel mounting structure of a sound box. The PCBA control panel mounting structure comprises a sound box shell, a PCBA control panel, a rotary potentiometer and a knob, the inner wall of the sound box shell is provided with a control panel mounting part, and the control panel mounting part is provided with a first shaft hole; the PCBA control panel is installed on the control panel installation part, the rotary potentiometer is installed on the side, back on to the control panel installation part, of the PCBA control panel, a second shaft hole is formed in the PCBA control panel, the position of the second shaft hole corresponds to the position of the first shaft hole, the rotary potentiometer comprises a potentiometer rotating shaft, and the potentiometer rotating shaft is connected with the PCBA control panel. The potentiometer rotating shaft sequentially passes through the second shaft hole and the first shaft hole and extends out of the sound box shell; and the knob is arranged at the outer end of the potentiometer rotating shaft. According to the utility model, the rotary potentiometer is installed at one side of the PCBA control board back to the control board installation part, so that the PCBA control board installation structure is relatively simple to assemble and relatively small in occupied volume, is beneficial to being used in a small-volume sound box, and can improve the waterproof performance.

Description

Technical Field

[0001] The utility model relates to the technical field of sound boxes, and in particular to a PCBA control board installation structure of a sound box. Background Art

[0002] A speaker is a device that can convert audio signals into sound. The speakers currently on the market can be found in Chinese patent document CN217283246U, which includes a speaker housing, a control panel mounting portion is arranged on the speaker housing, a PCBA control panel is mounted on the control panel mounting portion, and a volume knob and various function control buttons are mounted on the PCBA control panel. The volume knob is mounted on the side of the PCBA control panel facing the control panel mounting portion, and the volume knob extends out of the speaker housing so that the user can adjust the volume knob.

[0003] However, the speaker PCBA control board installation structure in the prior art has the following main problems: (1) The volume knob usually adopts a rotary potentiometer or encoder. Since the rotary potentiometer or encoder needs to occupy a large space, a storage space for accommodating the rotary potentiometer or encoder needs to be provided on the control board installation part of the speaker shell, or a clearance position for avoiding the rotary potentiometer or encoder needs to be provided, which makes the assembly of the speaker PCBA control board installation structure more complicated. At the same time, the speaker PCBA control board installation structure with a storage space or a clearance position will also occupy a large space, which is not conducive to use in small-volume speakers; (2) Since the volume knob is installed on the side of the PCBA control board facing the control board installation part, and the volume knob extends outside the speaker shell, it is easy for external water vapor to enter the speaker shell from the volume knob position, and it is difficult to achieve waterproofing between the volume knob and the control board installation part. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a PCBA control board mounting structure of a speaker in view of the deficiencies of the above-mentioned prior art. The rotary potentiometer of the PCBA control board mounting structure is mounted on the side of the PCBA control board facing away from the control board mounting portion, so that the assembly of the PCBA control board mounting structure is relatively simple, the occupied volume is relatively small, it is conducive to use in a small-volume speaker, and the waterproof performance can be improved.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a PCBA control board installation structure of a speaker, comprising a speaker housing, a PCBA control board, a rotary potentiometer and a knob; the inner wall of the speaker housing is provided with a control board installation portion, and the control board installation portion is provided with a first axial hole; the PCBA control board is installed on the control board installation portion, and the rotary potentiometer is installed on the side of the PCBA control board facing away from the control board installation portion, and the PCBA control board is provided with a second axial hole, and the position of the second axial hole corresponds to the position of the first axial hole, and the rotary potentiometer includes a potentiometer shaft, and the potentiometer shaft passes through the second axial hole and the first axial hole in sequence and extends out of the speaker housing, and the knob is installed at the outer end of the potentiometer shaft.

[0006] Preferably, the control board mounting portion of the speaker housing is provided with a sealing positioning platform, a sealing gasket ring is provided on the inner side of the sealing positioning platform, the sealing gasket ring is respectively interference fit with the sealing positioning platform and the PCBA control board, the first axial hole is located in the middle of the sealing positioning platform and corresponds to the position of the sealing gasket ring. A circular rib is convexly provided on the inner wall of the sealing positioning platform of the speaker housing, the circular rib is pressed against the side of the sealing gasket ring and is interference fit with the sealing gasket ring.

[0007] Preferably, the rotary potentiometer includes a potentiometer seat body, which is welded to the side of the PCBA control board facing away from the control board mounting portion, one end of the potentiometer seat body is connected to a sleeve, the end of the sleeve is provided with an external thread, the sleeve passes through the second axial hole, the sealing gasket and the first axial hole in sequence, one end of the potentiometer shaft passes through the sleeve and is rotatably connected to the potentiometer seat body; a locking nut is provided on the outer side of the sealing positioning platform, and the locking nut is threadedly connected to the external thread of the sleeve.

[0008] Preferably, a gasket is provided between the outer side of the sealing positioning platform of the speaker housing and the locking nut.

[0009] Preferably, a concave cavity is provided on the outer side of the sealing positioning platform of the speaker shell, a plastic cover is provided inside the concave cavity, the plastic cover is provided with a third axial hole, a scale piece is installed on the outer side of the plastic cover, the scale piece is provided with a fourth axial hole, and the potentiometer shaft also has a third axial hole and a fourth axial hole in sequence.

[0010] Preferably, a plurality of buttons are provided on one side of the PCBA control board facing the control board mounting portion, and button caps matching the buttons are provided on the speaker housing.

[0011] The beneficial effects of the utility model are as follows: since the PCBA control board is installed on the control board mounting part, and the rotary potentiometer is installed on the side of the PCBA control board facing away from the control board mounting part, the control board mounting part does not need to be provided with a storage space for accommodating the rotary potentiometer, nor does it need to be provided with an avoidance position for avoiding the rotary potentiometer, which can make the assembly of the PCBA control board mounting structure simpler and occupy a smaller volume, which is conducive to use in a small-volume speaker. At the same time, since the side of the PCBA control board facing the control board mounting part is not installed with a rotary potentiometer, the PCBA control board and the control board mounting part can be better waterproofed, thereby improving the waterproof performance of the speaker. In addition, since the rotary potentiometer includes a potentiometer shaft, the potentiometer shaft passes through the second shaft hole and the first shaft hole in sequence and extends out of the speaker housing, and the knob is installed at the outer end of the potentiometer shaft, the user can easily rotate the knob to adjust the speaker volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is one of the overall structural diagrams of the utility model.

[0013] Figure 2 This is the second overall structural diagram of the present utility model.

[0014] Figure 3 This is one of the dispersed structure diagrams of the utility model.

[0015] Figure 4 for Figure 3 A partial enlarged view of part A.

[0016] Figure 5 This is the second dispersed structure diagram of the present utility model.

[0017] In the figure: 1. speaker housing; 11. control board mounting portion; 12. first axis hole; 13. sealing positioning platform; 15. circular perimeter bone; 16. concave cavity; 17. button cap; 2. PCBA control board; 21. second axis hole; 3. rotary potentiometer; 31. potentiometer shaft; 32. potentiometer seat; 321. bushing; 322. external thread; 4. knob; 5. sealing gasket; 6. locking nut; 7. gasket; 8. plastic cover; 81. third axis hole; 9. scale plate; 91. fourth axis hole; 10. button. DETAILED DESCRIPTION

[0018] The structural principle and working principle of the utility model are further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-Figure 5As shown, the utility model is a PCBA control board installation structure of a speaker, comprising a speaker housing 1, a PCBA control board 2, a rotary potentiometer 3 and a knob 4; the inner wall of the speaker housing 1 is provided with a control board installation portion 11, and the control board installation portion 11 is provided with a first shaft hole 12; the PCBA control board 2 is installed on the control board installation portion 11, and the rotary potentiometer 3 is installed on the side of the PCBA control board 2 facing away from the control board installation portion 11, and the PCBA control board 2 is provided with a second shaft hole 21, and the position of the second shaft hole 21 corresponds to the position of the first shaft hole 12, and the rotary potentiometer 3 includes a potentiometer shaft 31, and the potentiometer shaft 31 passes through the second shaft hole 21 and the first shaft hole 12 in sequence and extends outward from the speaker housing 1, and the knob 4 is installed at the outer end of the potentiometer shaft 31. The rotary potentiometer 3 is used to adjust the volume of the speaker, and the knob 4 is a metal knob. In the utility model, since the PCBA control board 2 is installed on the control board mounting portion 11, and the rotary potentiometer 3 is installed on the side of the PCBA control board 2 facing away from the control board mounting portion 11, the control board mounting portion 11 does not need to be provided with a storage space for accommodating the rotary potentiometer 3, nor does it need to be provided with an avoidance position for avoiding the rotary potentiometer 3, which can make the assembly of the PCBA control board 2 installation structure simpler, occupy a smaller volume, and is conducive to use in a small-volume speaker. At the same time, since the rotary potentiometer 3 is not installed on the side of the PCBA control board 2 facing the control board mounting portion 11, the PCBA control board 2 and the control board mounting portion 11 can be better waterproofed, thereby improving the waterproof performance of the speaker. In addition, since the rotary potentiometer 3 includes a potentiometer shaft 31, the potentiometer shaft 31 passes through the second shaft hole 21 and the first shaft hole 12 in sequence and extends out of the speaker housing 1, and the knob 4 is installed at the outer end of the potentiometer shaft 31, the user can easily rotate the knob 4 to adjust the speaker volume.

[0020] like Figure 1-Figure 5 As shown, the control board mounting portion 11 of the speaker housing 1 is provided with a sealing positioning platform 13, and a sealing gasket 5 is provided inside the sealing positioning platform 13. The sealing gasket 5 is respectively interference-fitted with the sealing positioning platform 13 and the PCBA control board 2, and the first axial hole 12 is located in the middle of the sealing positioning platform 13 and corresponds to the position of the sealing gasket 5. Under the action of the sealing gasket 5, the PCBA control board 2 and the sealing positioning platform 13 can achieve a good waterproof effect. Figure 4 As shown, the inner wall of the sealing positioning platform 13 of the speaker housing 1 is protruded with a circular rib 15, which pushes against the side of the sealing gasket ring 5 and has an interference fit with the sealing gasket ring 5. The circular rib 15 can be better pushed into the sealing gasket ring 5, and the waterproof effect is better.

[0021] like Figure 1-Figure 5As shown, the rotary potentiometer 3 includes a potentiometer seat 32, which is welded to the side of the PCBA control board 2 facing away from the control board mounting portion 11, one end of the potentiometer seat 32 is connected to a sleeve 321, the end of the sleeve 321 is provided with an external thread 322, the sleeve 321 passes through the second shaft hole 21, the sealing gasket 5 and the first shaft hole 12 in sequence, one end of the potentiometer shaft 31 passes through the sleeve 321 and is rotatably connected to the inside of the potentiometer seat 32; the outer side of the sealing positioning platform 13 is provided with a locking nut 6, and the locking nut 6 is threadedly connected to the external thread 322 of the sleeve 321. Preferably, a gasket 7 is provided between the outer side of the sealing positioning platform 13 of the speaker housing 1 and the locking nut 6. The shaft sleeve 321 and the locking nut 6 are provided, which have two functions. On the one hand, they can provide locking force to form a stress that brings the PCBA control board 2 and the sealing positioning platform 13 closer to each other, so that the sealing gasket ring 5 can respectively fit with the sealing positioning platform 13 and the PCBA control board 2 in an interference fit; on the other hand, they can prevent external water vapor from entering the speaker housing 1 from the second shaft hole 21 and the first shaft hole 31.

[0022] like Figure 1 , Figure 3 and Figure 5 As shown, a concave cavity 16 is provided on the outer side of the sealing positioning platform 13 of the speaker housing 1, a plastic cover 8 is provided inside the concave cavity 16, the plastic cover 8 is provided with a third axial hole 81, a scale piece 9 is installed on the outer side of the plastic cover 8, the scale piece 9 is provided with a fourth axial hole 91, and the potentiometer shaft 31 also has a third axial hole 81 and a fourth axial hole 91 in sequence.

[0023] like Figure 1 and Figure 5 As shown, a plurality of buttons 10 are provided on one side of the PCBA control board 2 facing the control board mounting portion 11 , and a button cap 17 matching the buttons is provided on the speaker housing 1 .

[0024] The above is only a preferred embodiment of the present invention. Any slight modification, equivalent changes and modifications made to the above embodiments according to the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A PCBA control board installation structure for a speaker, characterized in that: The invention comprises a speaker housing (1), a PCBA control board (2), a rotary potentiometer (3) and a knob (4); the inner wall of the speaker housing (1) is provided with a control board mounting portion (11), and the control board mounting portion (11) is provided with a first shaft hole (12); the PCBA control board (2) is mounted on the control board mounting portion (11), the rotary potentiometer (3) is mounted on a side of the PCBA control board (2) which faces away from the control board mounting portion (11), the PCBA control board (2) is provided with a second shaft hole (21), the position of the second shaft hole (21) corresponds to the position of the first shaft hole (12), the rotary potentiometer (3) comprises a potentiometer shaft (31), the potentiometer shaft (31) passes through the second shaft hole (21) and the first shaft hole (12) in sequence and protrudes out of the speaker housing (1), and the knob (4) is mounted on the outer end of the potentiometer shaft (31).

2. The PCBA control board installation structure of the speaker according to claim 1, characterized in that: The control board mounting portion (11) of the speaker housing (1) is provided with a sealing positioning platform (13), a sealing gasket ring (5) is provided on the inner side of the sealing positioning platform (13), the sealing gasket ring (5) is respectively interference fit with the sealing positioning platform (13) and the PCBA control board (2), and the first axial hole (12) is located in the middle of the sealing positioning platform (13) and corresponds to the position of the sealing gasket ring (5).

3. The PCBA control board installation structure of the speaker according to claim 2, characterized in that: A circular rib (15) is protruding from the inner wall of the sealing positioning platform (13) of the speaker housing (1), and the circular rib (15) is pressed against the side of the sealing gasket ring (5) and is interference-fitted with the sealing gasket ring (5).

4. The PCBA control board installation structure of the speaker according to claim 2, characterized in that: The rotary potentiometer (3) comprises a potentiometer seat (32), the potentiometer seat (32) being welded to a side of the PCBA control board (2) facing away from the control board mounting portion (11), one end of the potentiometer seat (32) being connected to a shaft sleeve (321), an end of the shaft sleeve (321) being provided with an external thread (322), the shaft sleeve (321) passing through the second shaft hole (21), the sealing gasket (5) and the first shaft hole (12) in sequence, one end of the potentiometer shaft (31) passing through the shaft sleeve (321) and being rotatably connected to the inside of the potentiometer seat (32); a locking nut (6) being provided on the outer side of the sealing positioning platform (13), the locking nut (6) being threadedly connected to the external thread (322) of the shaft sleeve (321).

5. The PCBA control board installation structure of the speaker according to claim 4, characterized in that: A gasket (7) is provided between the outer side of the sealing positioning platform (13) of the speaker housing (1) and the locking nut (6).

6. The PCBA control board installation structure of the speaker according to claim 4, characterized in that: A concave cavity (16) is provided on the outer side of the sealing positioning platform (13) of the speaker housing (1), a plastic cover (8) is provided inside the concave cavity (16), the plastic cover (8) is provided with a third axial hole (81), a scale sheet (9) is installed on the outer side of the plastic cover (8), the scale sheet (9) is provided with a fourth axial hole (91), and the potentiometer shaft (31) is also provided with the third axial hole (81) and the fourth axial hole (91) in sequence.

7. The PCBA control board installation structure of the speaker according to claim 1, characterized in that: A plurality of buttons (10) are provided on one side of the PCBA control board (2) facing the control board mounting portion (11), and a button cap (17) matching the buttons (10) is provided on the speaker housing (1).

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