Highly explosion preventing wane type switch

A rocker and switch technology, applied in electrical switches, electrical components, circuits, etc., can solve the problems of large size, poor reliability, and complex seal design of explosion-proof switches, and achieve small size, light action, and is conducive to arc extinguishing. Effect

Inactive Publication Date: 2009-03-25
徐能通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing explosion-proof switches are bulky, and the design of the seal is complicated. Working in the environment of explosive gas for a long time, it cannot completely prevent the explosive gas from slowly infiltrating into the switch room, so the reliability is poor.

Method used

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  • Highly explosion preventing wane type switch
  • Highly explosion preventing wane type switch
  • Highly explosion preventing wane type switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] For the switch structure of the embodiment, see figure 1 with figure 2 , The selection of the on-off of the circuit is completed by the left contact piece 10, the right contact piece 8, the middle contact piece 9, and the moving contact piece 6. The moving contact piece 6 is placed on the middle contact piece 9 and can be tilted left and right. When the moving contact piece 6 When the left contact piece 10 is in contact, the left side is energized; when the moving contact piece 6 and the right contact piece 8 are in contact, the right side is energized.

[0014] The above-mentioned left contact piece 10, right contact piece 8, middle contact piece 9, and moving contact piece 6 are all in the switch chamber 7. The upper opening of the switch chamber 7 is sealed with the panel of the housing 1 to form a closed structure.

[0015] The panel of the shell 1 is equipped with a rocker 2, which is the operating part of the hand-operated switch, and two magnets 3 are installed on ...

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PUM

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Abstract

The invention provides a highly explosion-proof rocker switch. A switch chamber thereof is separated from a rocker by a panel of a housing; the switch chamber has a closed structure; an iron plate is pressed above a movable contact spring; magnets are mounted at two ends of the rocker and used for attracting the iron plate to rock along with the movable contact spring; and the inner cavity of the switch chamber is filled with transformer oil or silicon oil. The magnets are used for driving the movable contact spring, the switch chamber can be sealed completely without any mechanical transmission parts, and the switch chamber is full of the transformer oil, thereby preventing external explosible gas from infiltrating or contacting electrical components, and achieving high explosion prevention. Besides, the transformer oil is good for arc extinction, and the electrical service life of the switch can be prolonged. The invention has the advantages of quiet action, small size and long service life.

Description

Technical field [0001] The present invention relates to electrical switches, especially explosion-proof switches. Background technique [0002] Existing explosion-proof switches mostly seal the switch room to isolate the external explosive gas from entering and contact with the arc, and the knob, button or rocker of the control switch is connected with the movable contact piece in the switch room, the connection piece and the switch shell Between them is sealed with rubber seals. The existing explosion-proof switch has a large volume and a complicated seal design. It has been working in an explosive gas environment for a long time, and it cannot completely prevent the explosive gas from slowly infiltrating into the switch room, so the reliability is poor. Summary of the invention [0003] The purpose of the present invention is to provide a high-reliability explosion-proof switch that can completely isolate the switch room from the outside and prevent the penetration of explosiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H21/08H01H9/44
Inventor 徐楠郑星谧徐袆
Owner 徐能通
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