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Double-break electrical contact device and isolating switch using same

A technology of isolating switches and contacts, which is applied in the field of electric contact devices, can solve the problems of non-synchronization of moving contacts and different driving angles of four-bar linkage mechanism, and achieve the effect of reliable contact and uniform erosion

Active Publication Date: 2012-04-11
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the two four-bar linkages share a fixed connection, the driving angles of the two four-bar linkages are different, causing the moving contacts to be driven asynchronously

Method used

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  • Double-break electrical contact device and isolating switch using same
  • Double-break electrical contact device and isolating switch using same
  • Double-break electrical contact device and isolating switch using same

Examples

Experimental program
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Embodiment Construction

[0019] figure 1 The contact device 1 of the present invention in a closed state is shown, which includes a device body 12, a driving member 11, a first static contact 21, a second static contact 31, a first moving contact 22 and a second moving contact 32. The device body 12 is, for example, the housing of the contact device 1 and is usually formed by injection molding. The driving member 11 such as a cam is pivotally connected to the middle of the device body 12 through the main shaft 17 and is made of insulating material, so as to ensure electrical insulation between the first movable contact 22 and the second movable contact 32 . The first stationary contact 21 and the second stationary contact 31 , the first moving contact 22 and the second moving contact 32 , and the first guiding mechanism and the second guiding mechanism are respectively symmetrical about the main shaft 17 . A drive mechanism (not shown) that separates the switch drive pole will drive the drive member...

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PUM

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Abstract

The invention provides a double-break electrical contact device, comprising a device body, a driving component, a first static contact, a second static contact, a first moving contact, a second moving contact, a first guide mechanism and a second guide mechanism, wherein the driving component is connected to the device body through a main shaft; the first static contact and the second static contact, the first moving contact and the second moving contact, and the first guide mechanism and the second mechanism are respectively symmetrical about the main shaft; and the driving component can drive the first moving contact and the second moving contact to pivotally synchronously rotate relative to the device body under the guidance of the first guide mechanism and the second guide mechanism respectively, so that the first moving contact and the second moving contact are respectively connected with or disconnected from the first static contact and the second static contact. The invention has the advantage that synchronous breaking of the moving contacts is realized, thereby prolonging the service life of the contact device.

Description

technical field [0001] The invention relates to an electric contact device, in particular to a symmetrical double-break electric contact device for a fuse type isolating switch. In addition, the invention also relates to a fuse-type isolating switch using the symmetrical double-break electrical contact device. Background technique [0002] Fusible disconnect switches provide protection for replacing fuses. When the drive pole of the disconnector drives the contact arrangement in the contact pole to the open position, the fuse must be isolated on both sides. For this reason, most of the existing fused disconnectors use double-break contacts. One type of double-break contacts is called "rotary type", and its moving contact, connecting rod and driving rod form two The four-bar linkage mechanism shares one fixed connection, thereby driving the moving contact to rotate the other two independent fixed connections. This type of double-break electrical contact has the advantage o...

Claims

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Application Information

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IPC IPC(8): H01H31/12
CPCH01H31/12H01H9/10H01H31/28H01H9/40
Inventor 李棣楠陈德州宋磊姜晓军
Owner SIEMENS AG
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