Non-contact proximity switch and valve position indicating system

A proximity switch, non-contact technology, applied in electrical switches, magnetic field/electric field switches, electrical connection of contacts, etc., can solve problems such as false signals and malfunction of proximity switches

Pending Publication Date: 2022-06-24
江苏利核仪控技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a non-contact proximity switch, which has solved the problem of the existing proximity switch that when there is vibration in the working environment, the vibration of the magnetic part will cause the proximity switch to malfunction and generate false signals.

Method used

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  • Non-contact proximity switch and valve position indicating system
  • Non-contact proximity switch and valve position indicating system
  • Non-contact proximity switch and valve position indicating system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] figure 2 A schematic structural diagram of the non-contact proximity switch provided in this embodiment in a working state, image 3 for figure 2 The schematic diagram of the structure of the non-contact proximity switch shown in the non-working state. Here, it is defined that the first movable contact 271 is in a non-working state when it is in contact with the first stationary contact 21 , and it is an operating state when the second movable contact 272 is in contact with the second stationary contact 22 . like Figure 2-3 As shown, the non-contact proximity switch provided in this embodiment includes a housing 1 , a contact base 2 , an elastic component 3 , and a driving component 5 . The housing 1 includes an open end and a closed end, and serves as a housing for the proximity switch. In this embodiment, the diameter and length of the housing 1 are not limited, and those skilled in the art can set them according to actual needs.

[0067] A possible implementa...

Embodiment 2

[0093] Figure 7 This is a partial structural schematic diagram of the valve position indication system provided in this embodiment. On the basis of the first embodiment, this embodiment also provides a valve position indication system, including a valve, a bracket, an electrical connector 8, an indicator, and the non-contact proximity switch in the first embodiment.

[0094] The valve stem of the valve is provided with a target 7 , and this embodiment does not limit the fixing method of the target 7 and the valve stem, and those skilled in the art can set it according to actual needs. Both the valve and the proximity switch are installed on the bracket, and the subsequent circuit is electrically connected to the contacts of the proximity switch through the electrical connector 8, wherein the indicator is located on the subsequent circuit, that is, the circuit electrically connected to the proximity switch.

[0095] like Figure 5 and Figure 7 As shown, the electrical conn...

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PUM

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Abstract

The embodiment of the invention provides a non-contact proximity switch and a valve position indicating system. The non-contact proximity switch comprises: a housing; the contact seat comprises a first static contact, a second static contact and a rotatable movable contact arc-shaped plate, and the first static contact and the second static contact are arranged at the two ends of the movable contact arc-shaped plate respectively. The elastic assembly is rotatably arranged in the housing, and a part of the elastic assembly presses the moving contact arc-shaped plate and can slide on the surface of the moving contact arc-shaped plate. The driving assembly comprises a movable magnetic part, a fixed magnetic part, a connecting shaft and a connecting rod. The valve position indicating system comprises the valve, a support, an electric connecting piece, an indicator and the proximity switch, and the target used for attracting the movable magnetic piece is arranged on the valve rod of the valve. According to the proximity switch provided by the invention, the elastic assembly compresses the first moving and static contact and the first static contact or compresses the second moving and static contact and the second static contact in a contact state, so that a contact malfunction phenomenon cannot be caused in a high-vibration environment.

Description

technical field [0001] The embodiments of the present invention relate to switch control technology, and in particular, to a non-contact proximity switch and a valve position indication system. Background technique [0002] A non-contact proximity switch is a position switch that can output a switch signal without contacting external components. When the distance between the target and the sensing surface of the switch is less than or greater than the action threshold, the proximity switch changes state and outputs a switch signal. Most of the existing non-contact proximity switches use magnetic parts to directly drive the switch contacts, and the magnetic parts and contacts are connected by rigidity. When there is vibration in the working environment (especially when the proximity switch is installed in a high-vibration environment such as a pipeline), The vibration of the magnetic parts will cause the proximity switch to malfunction and generate false signals. SUMMARY OF...

Claims

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Application Information

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IPC IPC(8): H01H36/00H01H1/58H01H9/02
CPCH01H36/00H01H9/02H01H1/58
Inventor 刘桂兴陈峰唐秋华王旭陶宇杰姚旭栋费晓瑜张冬明吴雪琼刘俊王伟杨芹黄彪
Owner 江苏利核仪控技术有限公司
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