Reverse rolling fork type operating device for travel switch

A technology of travel switches and actuators, applied in the direction of electrical components, etc., can solve problems such as imperfect protection functions, mechanism jamming, and action failures, and achieve the effects of compact structure, reliable operation, and stable performance

Inactive Publication Date: 2009-06-10
SHANGHAI JINGYI ELECTRICAL APPARATUS FACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the imperfect protection function, abnormal operation on the site causes the mechanism to be stuck, and the action fails to cause failures to occur from time to time.

Method used

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  • Reverse rolling fork type operating device for travel switch
  • Reverse rolling fork type operating device for travel switch

Examples

Experimental program
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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing.

[0015] Such as figure 1 , 2 As shown, a reverse rolling fork-type actuator for travel switches includes a housing 1, a transmission mechanism, and a push rod 2. The transmission mechanism includes a rotating shaft 3 with a rotating arm, and a cam 4 with an irregular cross-section. The cam 4 is sheathed on the head end of the rotating shaft 3, and the two are tightly matched. The head end is located above the push rod 2. The upper end of the push rod 2 is provided with an axial groove, and the pin shaft passes through the groove. A roller 5 is fixed, and the roller 5 is engaged with the cam 4, and the said cam is provided with a protrusion 11 located on its upper right.

[0016] The transmission mechanism also includes a support member 6 that is in close contact with the inner wall of the housing. The support member 6 is located above the head end of the rotating shaft, an...

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PUM

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Abstract

The invention relates to a reverse rolling fork type actuator for a travel switch, which comprises a shell, a transmission mechanism, and a push rod, wherein the transmission mechanism comprises a rotating shaft with a rotating arm and a cam with an irregular section, the cam is sleeved at the head end of the rotating shaft, the cam and the rotating shaft are in tight fit, the head end is positioned above the push rod, the upper end of the push rod is provided with an axial groove, a roller is fixed in the groove through a pin shaft and is engaged with the cam, and the cam is provided with a protruding part positioned at the upper-right part of the cam. Compared with the prior art, the actuator has the advantages of compact structure, steady performance, reliable work, and long service life.

Description

technical field [0001] The invention relates to the operation of travel switches, in particular to a reverse rolling fork type actuator for travel switches. Background technique [0002] The limit switch can convert mechanical motion into electrical signal, which is used to control mechanical action or program control, so it is widely used in control systems. In practical applications, there are defects such as unstable action characteristics and unreliable work. Because the protection function is not perfect, the abnormal operation on site causes the mechanism to get stuck, and the action fails to cause the failure to occur from time to time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a reverse rolling fork-type actuator for travel switches in order to overcome the above-mentioned defects in the prior art. [0004] The purpose of the present invention can be achieved through the following technical soluti...

Claims

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Application Information

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IPC IPC(8): H01H21/18H01H21/22H01H21/36
Inventor 李则贵
Owner SHANGHAI JINGYI ELECTRICAL APPARATUS FACTORY CO LTD
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