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Direct-acting piston actuator for travel switch

A travel switch and actuator technology, applied in electrical switches, electrical components, circuits, etc., can solve problems such as action failure, mechanism stuck, incomplete protection function, etc., achieve reliable sealing, overcome sealing effectiveness, and improve The effect of the service life

Active Publication Date: 2011-08-10
SHANGHAI JINGYI ELECTRICAL APPARATUS FACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, although many important control occasions have been replaced by foreign brand products, because the protection function of this type of product is not perfect at present, it is more common that the mechanism is stuck due to abnormal operation on site, and the action failure leads to failure.

Method used

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  • Direct-acting piston actuator for travel switch
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Examples

Experimental program
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Effect test

Embodiment Construction

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

[0015] Such as figure 1 As shown, a direct-acting plunger-type actuator for travel switches includes a transmission mechanism, a push rod 1, and a housing 2 with upper and lower openings. The transmission mechanism includes a plunger 3 with an axial groove at its lower end. , the plunger 3 is penetrated in the housing 2, its upper end is exposed outside the upper opening of the housing 2, the upper end of the push rod 1 is fixed in the groove at the lower end of the plunger 3, and the housing 2 The openings at both ends are adapted to the plunger 3 and the push rod 1 respectively.

[0016] The groove at the lower end of the plunger 3 is provided with a stepped inner wall, and the upper end of the push rod 1 is fixed in the groove by a support member 4 fixed to the stepped inner wall, and the push rod 1 is located at the bottom of the groove. The middle part is provided wi...

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PUM

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Abstract

The invention relates to a direct-acting piston actuator for a travel switch, comprising a transmission mechanism, a pushing rod and a casing with an upper opening and a lower opening. The transmission mechanism comprises a piston. The lower end of the piston is provided with an axial groove. The piston is perforated into the casing. An upper end of the piston is exposed to the upper opening of the casing. An upper end of the pushing rod is fixed in the groove at the lower end of the piston. The openings at the two ends of the casing are respectively adapted to the piston and the pushing rod.Compared with the prior art, the direct-acting piston actuator for the travel switch has the characteristics of simple structure, stable performance, strong reliability, etc.

Description

technical field [0001] The invention relates to a travel switch actuator, in particular to a direct-acting plunger type actuator for a travel switch. 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 performance and unreliable work. In recent years, although many important control occasions have been replaced by foreign brand products, because the protection function of this type of product is not perfect at present, it is more common that the mechanism is stuck due to abnormal operation on site, and the action failure leads to failure. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a direct-acting plunger type actuator for travel switches with simple structure, stable performance and high reliabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H13/12H01H13/14H01H13/20
Inventor 李则贵
Owner SHANGHAI JINGYI ELECTRICAL APPARATUS FACTORY CO LTD