Safety switch

A safety switch, switch technology, applied in the direction of electrical switches, electrical components, circuits, etc., to achieve the effect of high switch safety, not easy to damage and aging

Active Publication Date: 2016-10-12
广东联塑电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to solve the problem of liquid or water vapor contacting the circuit in the switch, and to provide a safety switch, which is waterproof and not easy to be affected by moisture and aging, and has high safety performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figures 1 to 6 The shown safety switch includes a housing 1, a switch button 3, two pairs of automatic isolation door structures and a main spring 30 for the switch button. The automatic isolation door structure is mirror-symmetrical about the center of the switch button 3.

[0033] The switch button 3 includes a pressing part and a movable contact 31 , the pressing part is located outside the housing 1 , the movable contact 31 has a convex part 310 at the rear end, and the main spring 30 is sleeved on the side surface of the movable contact 31 .

[0034] The casing 1 is provided with a first cavity and a second cavity, and the casing 1 is provided with a first connecting terminal 10 and a second connecting terminal 11 installed in parallel on one side of the casing, and the end of the first connecting terminal 10 is provided with a second A contact portion 100, the first contact portion 100 is located in the first cavity, the end of the second terminal 11 is p...

Embodiment 2

[0050] The difference between this embodiment and the first embodiment is that the second contact part 110 is a metal ring with a slope, the slope of the metal ring faces the rear end of the movable contact 31 , the protrusion 310 is ring-shaped, and the movable contact 30 is in the shape of a truncated cone.

[0051] The corresponding effects are as follows: firstly, the annular inclined surface of the metal ring forms a tapered surface, and the second contact portion 110 can increase the contact area with the convex portion 310, effectively avoiding poor contact and improving safety.

[0052] Secondly, the conical surface of the metal ring cooperates with the annular convex portion 310 to make the convex portion 310 concentric with the metal ring to ensure the concentricity of the two, so that the top of the contact can be accurately aligned with the arc-shaped contact portion of the first contact portion 100 1001, to avoid poor contact when misaligned.

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PUM

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Abstract

The invention discloses a safety switch. The safety switch comprises a casing body, a switch button, an automatic isolation door structure and a main spring which is applied to the switch button. The switch button comprises a movable contact. A convex part is arranged on the rear end of the movable contact. The casing body is provided with a first accommodation cavity, a second accommodation cavity, a first wiring terminal and a second wiring terminal. The automatic isolation door structure comprises a wire control, a pulley block and an opening and closing door with a resetting mechanism. When the switch button is pressed, opening and closing of the opening and closing door are controlled through the wire control and the pulley block. When the opening and closing door is closed tightly under the action of the reset mechanism, the first wiring terminal inside the first accommodation cavity can be closed to prevent water vapor from entering the first accommodation cavity, so that the first wiring terminal and the second wiring terminal are completely disconnected. The safety switch is waterproof, is not easily damped and aged, and has high safety.

Description

technical field [0001] The present invention relates to a circuit controller, which is a safety switch. Background technique [0002] The switch is a device used to control the power on and off of the circuit, but because the switch is basically in a state of being energized (that is, the voltage is maintained on the live line), when the switch is not in use, the circuit in the switch still has electricity, and when the liquid enters the switch At the same time, since the live line still maintains a voltage, the moment the liquid enters, the circuit in the switch will be short-circuited, causing the electrical appliances or the switch to burn out, which has a high safety problem. [0003] At the same time, if the switch is in an environment with high water vapor for a long time, the water vapor will accelerate the aging and oxidation of the circuit inside the switch, resulting in failure of switch control. [0004] Therefore, how to prevent liquid or water vapor from contac...

Claims

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Application Information

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IPC IPC(8): H01H9/04
CPCH01H9/04
Inventor 纪孔金
Owner 广东联塑电气有限公司
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