Non-contact proportional switch

Abstract

The utility model relates to the technical field of switches, in particular to a non-contact proportional switch, which comprises a shell, a button assembly in bolted connection with the upper end of the shell, an isolation pad arranged below the button assembly, glass arranged below the isolation pad, a circuit mounting plate arranged below the glass, and an induction circuit board arranged below the circuit mounting plate. The button assembly comprises a plurality of rubber caps, the rubber caps are connected with the button assembly in a sealed mode, and proportion button units are connected to the lower portions of the rubber caps. According to the utility model, the circuit board is sealed through the fixed connection of the housing and the button assembly, and the dustproof and waterproof performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a contactless proportional switch. Background Art

[0002] A switch is a device that controls the opening and closing of a device. Depending on the usage scenario, there are different requirements for the performance of the switch. For a general switch, it has two states, on and off. For different usage scenarios, the state of the switch opening is divided into different opening proportions to determine the power of the device opening. This switch is called a proportional switch. In order to improve the adaptability of the proportional switch, it is very important to improve the dustproof and waterproof performance of the proportional switch. Therefore, it is particularly necessary to develop a dustproof and waterproof contactless proportional switch to improve the performance of the proportional switch. Summary of the invention

[0003] The utility model aims to provide a contactless proportional switch which has the advantages of being dustproof and waterproof.

[0004] The technical solutions adopted are as follows:

[0005] A contactless proportional switch comprises a shell, a button assembly is bolted to the upper end of the shell, an isolation pad is arranged below the button assembly, glass is arranged below the isolation pad, a circuit mounting board is arranged below the glass, an induction circuit board is arranged below the circuit mounting board, the button assembly comprises a plurality of rubber caps, the rubber caps are sealed and connected to the button assembly, and proportional button units are connected below the rubber caps.

[0006] Preferably, the proportional button unit includes a base, a limit ring is provided on the upper end of the base, a compression spring is arranged in the limit ring, a permanent magnet pin is provided on the upper end of the compression spring, the permanent magnet pin is provided with a limit plate pressed on the upper end of the compression spring, a limit hole is laterally arranged on the upper end of the permanent magnet pin, a cylinder connected to the base is sleeved on the side of the permanent magnet pin, a rubber sleeve is sleeved on the upper end of the cylinder, the permanent magnet pin extends to the outside of the rubber sleeve, a pressure cap is provided on the upper end of the permanent magnet pin, and a positioning pin connected to the limit hole is inserted on the pressure cap.

[0007] Preferably, the cylinder is filled with graphite powder.

[0008] Preferably, the base is provided with a fixing hole, a fixing bolt is arranged in the fixing hole, and the base is fixedly connected to the cylinder body by the fixing bolt.

[0009] Preferably, a plurality of arc-shaped notches are formed on the side surface of the base.

[0010] Preferably, an O-ring is provided between the button assembly and the housing.

[0011] Compared with the prior art, the beneficial effects are:

[0012] 1. The utility model utilizes the sealed connection between the button assembly and the housing to achieve sealing of the power installation board and the sensing circuit board, thereby preventing dust and water from entering the circuit installation board and the sensing circuit board. When the rubber cap is damaged, dust and water will also be blocked by the isolation pad and the glass and will not contact the sensing circuit board, thereby ensuring the normal use of the proportional switch and having excellent waterproof and dustproof effects.

[0013] 2. The cylinder of the utility model is filled with graphite powder, which acts as a lubricant and makes the permanent magnet pin slide more smoothly in the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of a non-contact proportional switch of the utility model.

[0015] Figure 2 This is an exploded view of a proportional button unit of a non-contact proportional switch of the utility model.

[0016] Figure 3 It is a three-dimensional diagram of a proportional button unit of a contactless proportional switch of the utility model.

[0017] In the figure: 1. shell, 2. button assembly, 201. rubber cap, 3. isolation pad, 4. glass, 5. circuit mounting plate, 6. induction circuit board, 7. O-ring, 8. base, 9. compression spring, 10. permanent magnet pin, 11. limit plate, 12. cylinder, 13. rubber sleeve, 14. pressure cap, 15. positioning pin, 16. fixing bolt, 17. fixing hole, 18. arc notch. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with specific embodiments. Figures 1 to 3 As shown:

[0019] Embodiment 1: A contactless proportional switch comprises a housing 1, a button assembly 2 is bolted to the upper end of the housing 1, an isolation pad 3 is arranged below the button assembly 2, a glass 4 is arranged below the isolation pad 3, a circuit mounting board 5 is arranged below the glass 4, and a sensing circuit board 6 is arranged below the circuit mounting board 5, the button assembly 2 comprises a plurality of rubber caps 201, the rubber caps 201 are sealed and connected to the button assembly 2, and a proportional button unit is connected below each of the rubber caps 201,

[0020] The rubber cap 201 is pressed to press the proportional button unit, and the movement of the proportional button unit is used to trigger the sensing circuit board 6 through the glass 4 and the isolation pad 3, so as to realize proportional switching or closing. The button assembly 2 and the housing 1 are sealed to realize the sealing of the circuit mounting board 5 and the sensing circuit board 6. When the rubber cap 201 is damaged, dust and water will also be blocked by the isolation pad 3 and the glass 4 and will not contact the sensing circuit board 6, thereby ensuring the normal use of the proportional switch;

[0021] Embodiment 2: A contactless proportional switch comprises a housing 1, a button assembly 2 is bolted to the upper end of the housing 1, an isolation pad 3 is arranged below the button assembly 2, a glass 4 is arranged below the isolation pad 3, a circuit mounting board 5 is arranged below the glass 4, and a sensing circuit board 6 is arranged below the circuit mounting board 5, the button assembly 2 comprises a plurality of rubber caps 201, the rubber caps 201 are sealed and connected to the button assembly 2, and a proportional button unit is connected below the rubber caps 201, an O-ring 7 is arranged between the button assembly 2 and the housing 1, and the O-ring 7 improves the sealing performance,

[0022] The rubber cap 201 is pressed to press the proportional button unit, and the movement of the proportional button unit is used to trigger the sensing circuit board 6 through the glass 4 and the isolation pad 3, so as to realize the proportional switch or close. The button assembly 2 and the housing 1 are sealed to realize the sealing of the circuit mounting board 5 and the sensing circuit board 6. When the rubber cap 201 is damaged, dust and water will also be blocked by the isolation pad 3 and the glass 4 and will not contact the sensing circuit board 6, thereby ensuring the normal use of the proportional switch.

[0023] The proportional button unit includes a base 8, a limit ring is provided at the upper end of the base 8, a compression spring 9 is arranged in the limit ring, a permanent magnet pin 10 is provided at the upper end of the compression spring 9, the permanent magnet pin 10 is provided with a limit plate 11 pressed on the upper end of the compression spring 9, a limit hole is transversely arranged at the upper end of the permanent magnet pin 10, a cylinder 12 connected to the base 8 is sleeved on the side of the permanent magnet pin 10, a rubber sleeve 13 is sleeved on the upper end of the cylinder 12, the permanent magnet pin 10 extends to the outside of the rubber sleeve 13, a pressure cap 14 is provided on the upper end of the permanent magnet pin 10, a positioning pin 15 connected to the limit hole is inserted on the pressure cap 14, the permanent magnet pin 10 uses its own magnetic force to affect the induction circuit board 6, and uses its own movement to control the proportional button.

[0024] The cylinder 12 is filled with graphite powder, which acts as a lubricant to make the permanent magnet pin 10 slide more smoothly in the cylinder 12. The base 8 is provided with a fixing hole 17, and a fixing bolt 16 is provided in the fixing hole 17. The base 8 is fixedly connected to the cylinder 12 by the fixing bolt 16. A plurality of arc-shaped notches 18 are provided on the side of the base 8. The base 8 is fixed to the button assembly 2 by using the fixing bolts 16 and the arc-shaped notches 18.

[0025] The specific working process is as follows: when using the proportional switch, press the rubber cap 201 to press the pressure cap 14, the pressure cap 14 drives the permanent magnet pin 10 to move, the permanent magnet pin 10 uses its own magnetic force to affect the sensing circuit board 6, and uses its own movement to control the proportional button. The button assembly 2 and the shell 1 are sealed to achieve sealing of the circuit mounting board 5 and the sensing circuit board 6. When the rubber cap 201 is damaged, dust and water will also be blocked by the isolation pad 3 and the glass 4 and will not contact the sensing circuit board 6, thereby ensuring the normal use of the proportional switch.

[0026] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A contactless proportional switch, characterized in that: It includes a shell, a button assembly is bolted to the upper end of the shell, an isolation pad is arranged below the button assembly, glass is arranged below the isolation pad, a circuit mounting board is arranged below the glass, an induction circuit board is arranged below the circuit mounting board, the button assembly includes multiple rubber caps, the rubber caps are sealed and connected to the button assembly, and proportional button units are connected below the rubber caps.

2. A contactless proportional switch according to claim 1, characterized in that: The proportional button unit includes a base, a limit ring is provided on the upper end of the base, a compression spring is arranged in the limit ring, a permanent magnet pin is provided on the upper end of the compression spring, the permanent magnet pin is provided with a limit plate pressed on the upper end of the compression spring, a limit hole is transversely arranged on the upper end of the permanent magnet pin, a cylinder connected to the base is sleeved on the side of the permanent magnet pin, a rubber sleeve is sleeved on the upper end of the cylinder, the permanent magnet pin extends to the outside of the rubber sleeve, a pressure cap is provided on the upper end of the permanent magnet pin, and a positioning pin connected to the limit hole is inserted on the pressure cap.

3. A contactless proportional switch according to claim 2, characterized in that: The cylinder is filled with graphite powder.

4. A contactless proportional switch according to claim 2, characterized in that: The base is provided with a fixing hole, in which a fixing bolt is arranged, and the base is fixedly connected with the cylinder body by the fixing bolt.

5. A contactless proportional switch according to claim 4, characterized in that: A plurality of arc-shaped notches are provided on the side surface of the base.

6. A contactless proportional switch according to claim 1, characterized in that: An O-type sealing ring is arranged between the button assembly and the housing.

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