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Two-wire type magnetic proximity switch

A magnetic proximity switch, wire-type technology, applied in electronic switches, electrical components, pulse technology, etc., can solve the problems of short life of magnetic proximity switches

Pending Publication Date: 2019-11-08
河南宏泽电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a two-wire magnetic proximity switch to solve the problem of short life of the magnetic proximity switch in the prior art

Method used

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  • Two-wire type magnetic proximity switch
  • Two-wire type magnetic proximity switch
  • Two-wire type magnetic proximity switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A two-wire magnetic proximity switch, including a housing and a switch circuit arranged in the housing, the structure of the switch circuit is as follows Figure 1-Figure 2 shown, including:

[0026] a pin unit, including a first pin and a second pin;

[0027] Full bridge circuit, the full bridge circuit is connected to the output terminal of the pin unit, which is used to ensure the non-polarity of the pin unit,

[0028] Since ordinary magnetic proximity switches need to pay attention to the positive and negative of the pins when using them, if the wrong pins are connected, the switch will be unusable. Therefore, in the embodiment of the present invention, a The full bridge circuit V is used to ensure that the two pins can be used interchangeably, so that the two pins have no polarity, so as to prevent the circuit from being unusable due to wrong pin connection when the user is using it.

[0029] A conversion circuit, the conversion circuit is connected to the output...

Embodiment 2

[0036] A two-wire magnetic proximity switch, including a housing and a switch circuit arranged in the housing, the structure of the switch circuit is as follows image 3 shown, including:

[0037] a pin unit, including a first pin and a second pin;

[0038] A full-bridge circuit, the full-bridge circuit is connected to the output terminal of the pin unit to ensure the non-polarity of the pin unit;

[0039] A conversion circuit, the conversion circuit is connected to the output terminal of the full bridge circuit and the induction switch, and is used to convert the normally open state or the normally closed state of the switch circuit according to the induction switch;

[0040] The indicator light circuit, the indicator light circuit is connected to the conversion circuit, and is used to display the working state of the switch circuit. In an embodiment of the present invention, the indicator light circuit includes a light emitting diode D;

[0041] The inductive switch circui...

Embodiment 3

[0048] A two-wire magnetic proximity switch such as Figure 4As shown, it includes a housing and a switch circuit arranged in the housing. In an embodiment of the present invention, the housing includes a main housing 1 provided with a cavity, and the switching circuit is installed in the cavity of the main housing 1. The main housing The lower side of the housing 1 is provided with a pin hole, and the first pin 2 and the second pin 2 in the switch circuit respectively pass through the pin hole and are fixed. The upper side of the main housing 1 is detachably provided with an upper cover, and The cover includes a mounting plate 3 and a waterproof portion 4 arranged on the mounting plate 3. The mounting plate 3 is symmetrically provided with mounting holes 5, and the two-wire magnetic proximity switch of the present invention can be fixed by passing through the mounting holes 5 with screws.

[0049] In the embodiment of the present invention, the waterproof part 4 has a cubic s...

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Abstract

The invention discloses a two-wire type magnetic proximity switch, which comprises a shell and a switch circuit arranged in the shell, and is characterized in that the switch circuit comprises a pin unit, a full-bridge circuit connected with the output end of the pin unit and a conversion circuit connected with the output end of the full-bridge circuit, and the conversion circuit is also connectedwith an inductive switch; and the indicating lamp circuit is connected with the conversion circuit. According to the two-wire type magnetic proximity switch, the switching current, voltage and switching power of the inductive switch can be greatly reduced, the service life of the magnetic proximity switch is greatly prolonged, and the magnetic proximity switch is closer to the ideal mechanical service life of tens of millions of times.

Description

technical field [0001] The invention relates to the technical field of magnetic proximity switches, in particular to a two-wire magnetic proximity switch. Background technique [0002] The most reliable non-contact proximity switch for motion position detection in the prior art is a magnetic proximity switch that uses a magnetic reed switch as a detection element. It is not like a semiconductor Hall element that is affected by temperature and has a large change in operating characteristics, and the cost Low. [0003] The two-wire magnetic proximity switch in the prior art generally includes a reed switch, an indicator light and a current limiting resistor connected in series with it, and a protection diode connected in parallel at both ends of the indicator light and the current limiting resistor. Since the reed switch and an external load are directly connected in series Therefore, the switching current is relatively large, the switching voltage is relatively high, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/95H03K17/08
CPCH03K17/9517H03K17/9505H03K17/08
Inventor 王浚泽
Owner 河南宏泽电子科技有限公司
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