DC button switch having dustproof function and potentiometer output

Abstract

In a DC button switch having a dustproof function and a potentiometer output, a mechanical structural part of the switch mainly comprises a base (1), an intermediate base (2), a push shaft (4), a sealing cushion block (5), a rubber sealing sleeve (6), a bottom cover (3) and a related structural member, the circumferential edge of a matching connection position of the base (1) and the push shaft (4) are sealed by the rubber sealing sleeve (6), and the sealing cushion block (5) is additionally arranged and used for fixing a connection position of the sealing sleeve of the push shaft to achieve a better sealing effect and a better positioning effect; and moreover, an electronic structure part of the switch comprises a speed regulation spring sheet (7), a circuit board (9), a waterproof terminal (10), a wire (11) and a related electronic component, and a connection position of the waterproof terminal (10) and the bottom cover (3) are sealed by a pouring sealant with relatively large viscosity. With the adoption of the scheme, the dustproof and waterproof function with a relatively good sealing effect can be achieved, the protection class can reach IP67, the DC button switch is compact in structure and low in construction cost and is widely applied to a DC electric gardening tool such as a DC suction blower, a DC grass trimmer and a DC electric chain saw, and conforms to the national safety standard.

Description

technical field [0001] The invention relates to a DC button switch with dustproof and dustproof functions and potentiometer output. Background technique [0002] The commonly used DC button switches on the market generally only have a general dust-proof function, and do not have a waterproof function. We know that electric garden tools are generally used outdoors, and electric garden tools are prone to water ingress when the humidity is high or in rainy days. The internal insulation level of these conventional DC push button switches will be greatly reduced, which will easily cause a short circuit. In severe cases, the tool will be burned and cause a fire. There is a serious safety hazard and does not meet the national safety standards. [0003] Therefore, aiming at the deficiencies in the prior art, it is imperative to design a DC push button switch with dustproof and waterproof functions and potentiometer output. Contents of the invention [0004] According to the backg...

AI Technical Summary

Problems solved by technology

[0002] The commonly used DC button switches on the market generally only have a general dust-proof function and do not have a waterproof function. We know that electric garden tools are generally used outdoors, and electric garden tools are prone to water ingress when the humidity is high or in rainy days. It will greatly reduce the internal insulation level of these conventional DC push button switches, which will easily cause a short circuit. In severe cases, the tool will be burned and cause a fire. There are serious safety hazards and do not meet the national safety standards.

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