Proximity switch

Abstract

The invention is applicable to the technical field of sensors, and provides a proximity switch which comprises a sensor chip, a magnetic core body and a circular fixing disc, the sensor chip comprises a main chip PCB and a PCB connecting plate, and the magnetic core body comprises a magnetic core body and a magnetizer arranged on the surface of one side of the magnetic core body; a first conducting strip is arranged on one side face of the circular fixing disc, a plurality of second conducting strips are evenly arrayed on the other side face of the circular fixing disc, a plurality of conducting holes penetrate through the circular fixing disc, and each conducting hole penetrates through the corresponding first conducting strip and the corresponding second conducting strip. The first conducting strip is bonded with magnetizer glue of the magnetic core body through conducting resin, and the PCB connecting plate is fixedly connected with the corresponding second conducting strip. According to the proximity switch provided by the invention, the problem that the inductance value of the proximity switch is increased and the detection accuracy of the proximity switch is improved due to the fact that a magnetic core coil with a copper wire arranged on the periphery is effectively avoided and abrasion and breakage caused by long-time use are avoided.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a proximity switch. Background technique [0002] Proximity switch is a switch type sensor, also known as non-contact proximity switch, which is an ideal electronic switch sensor. When the metal detection body approaches the sensing area of ​​the switch, the switch can quickly send out electrical instructions without contact, pressure, and sparks, accurately reflecting the position and stroke of the motion mechanism. [0003] Since the proximity switch needs to be applied in different environments, the temperature resistance of the proximity switch must be good in order to achieve the accuracy of the proximity switch in different environments. In the prior art, general proximity switches are often used at room temperature, but when encountering extremely bad weather, for example, in Heilongjiang and other areas in northern China, because the temperature in winter will reach minu...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a proximity switch, which aims to solve the problem that in the prior art, the magnetic core coil with copper wires connected to the outer periphery is easily caused to wear and tear during use, thereby affecting the inductance of the proximity switch, and further affecting the proximity switch. The problem with detection accuracy

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