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a safety switch

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

Inactive Publication Date: 2018-01-02
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 rear end of the movable contact 31 is provided with a convex part 310 , and the main spring 30 is sheathed 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 t...

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, which comprises a shell, a switch button, an automatic isolation door structure and a main spring used for the switch button; The first cavity, the second cavity, the first terminal and the second terminal, the automatic isolation door structure includes a wire control, a pulley block and an opening and closing door with a reset mechanism; when the switch button is pressed, the wire control and the pulley block can be used. Control the opening and closing of the opening and closing door. When the opening and closing door is tightly closed under the action of the reset mechanism, the first terminal in the first cavity can be sealed to prevent water vapor from entering the first cavity, so that the first The connection terminal and the second connection terminal are in a completely disconnected state, are waterproof and not prone to moisture aging, and have high safety performance.

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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Patent Type & Authority Patents(China)
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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