AU2020104091A4

AU2020104091A4 - Volume adjustment mechanism

Info

Publication number: AU2020104091A4
Application number: AU2020104091A
Authority: AU
Inventors: Ding HE; Zhi Liu; Zhenhua Yang; Hailong Zhou
Original assignee: Shenzhen Thousandshores Technology Co Ltd
Current assignee: Shenzhen Thousandshores Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-12-15
Publication date: 2021-02-25
Anticipated expiration: 2028-12-15
Also published as: CN214123762U

Abstract

The present disclosure discloses a volume adjustment mechanism, including: an upper cover, a knob, a potentiometer, a support, and a printed circuit board (PCB) board, where the knob is rotatably connected to an upper surface of the upper cover, the PCB board is secured to a lower surface of the upper cover, the support is located between the PCB board and the upper cover, upon the PCB board is provided with an accommodation groove, the potentiometer runs through the accommodation groove, the potentiometer is fixedly connected to the support, and the knob is connected to the support in a magnetic attraction manner to drive the potentiometer to rotate when the knob rotates. Compared with the prior art, in the volume adjustment mechanism provided in the present disclosure, the knob is connected to the support in a magnetic attraction manner, and the potentiometer is fixedly connected to the support. Therefore, when a user rotates the knob, the potentiometer is driven to rotate, so as to change a resistance value for volume adjustment. It can be seen that in the present disclosure, the potentiometer is separated from the knob, and no hole is required for the upper cover. Therefore, the water-proof performance is relatively good. 1 1 20 60 102 101 1 401 70 40 30 301 FIG. 1

Description

20

60

102 101 1

401

70

40

30 301

FIG. 1

VOLUME ADJUSTMENT MECHANISM

Field of Technology

The present disclosure relates to the field of acoustic equipment technologies, and more particularly to a volume adjustment mechanism.

Background Technology

A loudspeaker box is a piece of equipment which transforms an audio signal into a sound. The main box or sub-woofer box thereof has a built-in power amplifier. After amplified by the power amplifier, an audio signal is played back as a sound by the loudspeaker box. The sound thereof becomes louder. Currently, the volume adjustment function of a loudspeaker box is generally controlled by using a knob switch. That is, one end of the knob switch extends into the loudspeaker box to be connected to a potentiometer. A user can adjust the volume by rotating the knob switch. However, due to the connection structure between the knob switch and the potentiometer, a hole is required on a housing of the loudspeaker box. It is easy for water to flow into the box from the hole, which affects the service life of the loudspeaker box.

Summary

The present disclosure needs to resolve a technical problem by providing a volume adjustment mechanism that can improve the water-proof performance of a loudspeaker box.

To achieve the foregoing objective, the present disclosure provides a volume adjustment mechanism, including: an upper cover, a knob, a potentiometer, a support, and a printed circuit board (PCB) board, where the knob is rotatably connected to an upper surface of the upper cover, the PCB board is secured to a lower surface of the upper cover, the support is located between the PCB board and the upper cover, upon the PCB board is provided with an accommodation groove, the potentiometer runs through the accommodation groove, the potentiometer is fixedly connected to the support, and the knob is connected to the support in a magnetic attraction manner to drive the potentiometer to rotate when the knob rotates.

A further technical solution is as follows: at least one magnet is disposed in the knob, and a metal sheet is disposed at a position that is on the support and that corresponds to a position of the magnet.

A further technical solution is as follows: four magnets are disposed in the knob, and the metal sheet is an annular metal sheet.

A further technical solution is as follows: at least one metal sheet is disposed in the knob, and a magnet is disposed at a position that is on the support and that corresponds to a position of the metal sheet.

A further technical solution is as follows: at least one first magnet is disposed in the knob, and a second magnet having opposite magnetism to that of the first magnet is disposed at a position that is on the support and that corresponds to a position of thefirst magnet.

A further technical solution is as follows: both the first magnet and the second magnet are round sheet magnets made of NdFeB permanent magnet.

Compared with the prior art, in the volume adjustment mechanism provided in the present disclosure, the knob is connected to the support in a magnetic attraction manner, and the potentiometer is fixedly connected to the support. Therefore, when a user rotates the knob, the potentiometer is driven to rotate, so as to change a resistance value for volume adjustment. It can be seen that in the present disclosure, the potentiometer is separated from the knob, and no hole is required for the upper cover. Therefore, the water-proof performance is relatively good, and the non-water-proof problem caused by a direct connection between the potentiometer and the knob can be avoided.

The present disclosure becomes clearer through the following description with reference to accompanying drawings. Such accompanying drawings are used for explaining embodiments of the present disclosure.

Brief Description of the Drawings

FIG. 1 is a schematic exploded structural diagram of a volume adjustment mechanism according to a specific embodiment of the present disclosure;

FIG. 2 is a schematic top view of a volume adjustment mechanism according to a specific embodiment of the present disclosure; and

FIG. 3 is a schematic cross-sectional view of a volume adjustment mechanism according to a specific embodiment of the present disclosure.

Detailed Description

The following clearly and completely describes the technical solutions in the embodiments with reference to the accompanying drawings in the embodiments of the present disclosure. Similar component numbers in the accompanying drawings represent similar components. Apparently, the following to-be-described embodiments are merely some rather than all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

Referring to FIG. 1 to FIG. 3, FIG. 1 to FIG. 3 show a volume adjustment mechanism 1 according to a specific embodiment of the present disclosure. In this embodiment shown in the accompanying drawings, the volume adjustment mechanism 1 includes: an upper cover 10, a knob , a potentiometer 30, a support 40, and a PCB board 50, where the knob 20 is rotatably connected to an upper surface of the upper cover 10, the PCB board 50 is secured to a lower surface of the upper cover 10 through a bolt 301, the support 40 is located between the PCB board 50 and the upper cover 10, upon the PCB board 50 is provided with an accommodation groove 501, the potentiometer 30 runs through the accommodation groove 501, the potentiometer 30 is fixedly connected to the support 40, and the knob 20 is connected to the support 40 in a magnetic attraction manner to drive the potentiometer 30 to rotate when the knob 20 rotates. Preferably, in this embodiment, the PCB board 50 is further provided with a flat cable carrier 90. ABS, PC, or other plastic materials may be selected as the material of the upper cover 10 and the support 40. Based on the foregoing design, in the present disclosure, the knob 20 is connected to the support 40 in a magnetic attraction manner, and therefore, the potentiometer 30 is separated from and not directly connected to the knob 20. When a user rotates the knob 20, the potentiometer 30 is driven to rotate, so as to change a resistance value for volume adjustment. No hole is required for the upper cover 10, and water does not flow into the inside from the outside. Therefore, the water-proof performance is relatively good. The non-water-proof problem caused by a direct connection between the potentiometer 30 and the knob 20 can be avoided.

In some embodiments, at least one magnet 60 is disposed in the knob 20. A metal sheet 70 is disposed at a position that is on the support 40 and that corresponds to a position of the magnet 60. Preferably, the metal sheet 70 may be an iron sheet. Specifically, as shown in FIG. 1 and FIG. 3, in this embodiment, at least one groove 201 configured to place the magnet 60 is disposed in the knob 20. The magnet 60 may be fixed in the groove 201 in a tight fitting manner. An upper surface of the support 40 is provided with a second accommodation space 401 configured to place the metal sheet 70. The metal sheet 70 may befixed in the second accommodation space 401 through an adhesive. The bottom of the support 40 isfixedly connected to the potentiometer 30 through a screw 80.

Specifically, in this embodiment, four magnets 60 are disposed in the knob 20. The metal sheet is an annular metal sheet. Through magnetic attraction between the plurality of magnets 60 and the annular metal sheet 70, the steady connection between the knob 20 and the support 40 can be better maintained.

Understandably, in some other embodiments, the magnet 60 may be disposed on the support 40. Correspondingly, the metal sheet 70 may be disposed in the knob 20, which may also steadily connect the knob 20 to the support 40 in a magnetic attraction manner. Alternatively, at least one first magnet is disposed in the knob 20, and a second magnet having opposite magnetism to that of the first magnet is disposed at a position that is on the support 40 and that corresponds to a position of the first magnet, which may also steadily connect the knob 20 to the support 40 in a magnetic attraction manner. Preferably, both the first magnet and the second magnet are round sheet magnets made of NdFeB permanent magnet.

Still referring to FIG. 1 and FIG. 3, in this embodiment, the upper surface of the upper cover 10 is provided with a first accommodation space 101. A rotation shaft 102 is disposed in the middle of the first accommodation space 101. A lower surface of the knob 20 is located in the first accommodation space 101 and rotatably connected to the upper cover 10 through the rotation shaft 102.

Based on the above, in the volume adjustment mechanism provided in the present disclosure, the knob is connected to the support in a magnetic attraction manner, and the potentiometer is fixedly connected to the support. Therefore, when a user rotates the knob, the potentiometer is driven to rotate, so as to change a resistance value for volume adjustment. It can be seen that in the present disclosure, the potentiometer is separated from the knob, and no hole is required for the upper cover. The water-proof performance is relatively good, and the non-water-proof problem caused by a direct connection between the potentiometer and the knob can be avoided.

Although the present disclosure is described with reference to the optimal embodiments, the present disclosure is not limited to the foregoing disclosed embodiments and may cover various modifications and equivalent combinations based on the essence of the present disclosure.

Claims

1. A volume adjustment mechanism, comprising:

an upper cover;

a knob;

a potentiometer;

a support; and

a printed circuit board (PCB) board,

wherein the knob is rotatably connected to an upper surface of the upper cover, the PCB board is secured to a lower surface of the upper cover, the support is located between the PCB board and the upper cover, upon the PCB board is provided with an accommodation groove, the potentiometer runs through the accommodation groove, the potentiometer is fixedly connected to the support, and the knob is connected to the support in a magnetic attraction manner to drive the potentiometer to rotate when the knob rotates.

2. The volume adjustment mechanism according to claim 1, wherein at least one magnet is disposed in the knob, and a metal sheet is disposed at a position that is on the support and that corresponds to a position of the magnet.

3. The volume adjustment mechanism according to claim 2, wherein four magnets are disposed in the knob, and the metal sheet is an annular metal sheet.

4. The volume adjustment mechanism according to claim 1, wherein at least one metal sheet is disposed in the knob, and a magnet is disposed at a position that is on the support and that corresponds to a position of the metal sheet.

5. The volume adjustment mechanism according to claim 1, wherein at least one first magnet is disposed in the knob, and a second magnet having opposite magnetism to that of the first magnet is disposed at a position that is on the support and that corresponds to a position of the first magnet.

6. The volume adjustment mechanism according to claim 5, wherein both the first magnet and the second magnet are round sheet magnets made of NdFeB permanent magnet.

20 2020104091

60

102 101 10

401

501 70

40

90

30 301

FIG. 1

2020104091

10

20

FIG. 2

1 20 60 201 10

401

70

40 50

30 80

FIG. 3