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Single breakpoint quick-action assistant switch

An auxiliary switch and single break point technology, applied in the direction of electric switches, electrical components, circuits, etc., can solve the problems of shortened service life, different degrees of electric corrosion, and reduced reliability, and achieve reliable work, small contact resistance, and reliability high effect

Active Publication Date: 2015-01-28
CHENGDU RELIANCE ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similarly, during the closing process, under the action of the lateral force F1 given by the slope surface of the cam 4' on the moving contact seat 1', there is also a certain time difference in the synchronization of the two pairs of moving and static contacts 2' being connected. If one pair of contacts contacts before the other pair, this will also cause different degrees of electrical erosion of the moving and static contacts 2'. Different contacts cause virtual contact, thereby reducing its reliability and shortening its service life

Method used

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  • Single breakpoint quick-action assistant switch
  • Single breakpoint quick-action assistant switch
  • Single breakpoint quick-action assistant switch

Examples

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Embodiment Construction

[0048] specific implementation plan

[0049] Such as Figure 2 to Figure 5 As shown, the first specific embodiment of the present invention is a single breakpoint snap-action auxiliary switch, which includes a square shaft 1, a pull rod 2, a front cover 3, a rear cover 7 and a multi-layer contact box assembly 5. There is a baffle plate 4 at both ends of the multi-layer contact box assembly 5 respectively, the square shaft 1 runs through the contact box assembly 5 of each layer, and the contact box assembly 5 of each layer is tightened by two pull rods 2 Integrate into an auxiliary switch.

[0050] The contact box assembly 5 includes a contact box 6 and a cam 12 arranged in the cavity of the contact box 6, a moving contact piece 8, a static contact piece 10, a wiring device 11, a moving contact seat 13, a return spring 14 and a return spring seat 15. The square shaft 1 penetrates into the square hole in the middle of the cam 12. The cam 12 adopts a disc-shaped cam with a radi...

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Abstract

The invention discloses a single breakpoint quick-action assistant switch, and the single breakpoint quick-action assistant switch comprises a square shaft, a pull rod, a contact box, a cam, a movable contact spring, a static contact spring, a wiring device, a moving contact seat and a reset spring, the movable contact spring is the elastic metal sheet, one end of the movable contact spring is compressed in the wiring device, a moving contact is formed at the other end of the movable contact spring, a static contact matching with the moving contact is formed at one end of the static contact spring, one pair of moving contact and static contact is formed in the electric loop, the pressing force between the moving contact and the static contact can be kept through the reset spring pressure of the moving contact and the contact pressure of the reset spring in the moving contact seat, so that the contact resistance is low; for breaking, the lifting force to the middle of the moving contact from the moving contact seat can have lever effect for the moving contact, the moving contact can lift upwards fast for separating from the static contact, the separating speed is fast, the breaking capability is strong, the contact pull arc and burning phenomenon will not generated easily, the stability of the assistant switch is raised and the service life is prolonged.

Description

technical field [0001] The invention relates to a switching device used in an electrical control circuit, in particular to an auxiliary switch (also known as a transfer switch) used in a secondary control circuit of a high-voltage switch, belonging to the technical field of switching devices. Background technique [0002] As a common switching device used in the secondary control circuit of the high-voltage switch, the auxiliary switch controls the on-off of the primary circuit on the high-voltage side by controlling the circuit opening and closing of the secondary circuit on the low-voltage side. Accurate control of switching electrical appliances, and precise control of many control signals in electrical switching interlocking and relay protection systems, so the auxiliary switch has become an indispensable and important component in the control system of high and low voltage electrical appliances. , safe and reliable operation plays a vital role. Most of the existing aux...

Claims

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Application Information

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IPC IPC(8): H01H19/10H01H19/08H01H19/64
CPCH01H19/08H01H19/10H01H19/64
Inventor 陈涛曹远刚
Owner CHENGDU RELIANCE ELECTRIC
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