CN202261212U

CN202261212U - Photoelectric induction switch

Info

Publication number: CN202261212U
Application number: CN2011203582523U
Authority: CN
Inventors: 刘源; 纪建伟; 吴迪
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-23
Filing date: 2011-09-23
Publication date: 2012-05-30
Anticipated expiration: 2021-09-23

Abstract

The utility model discloses a photoelectric induction switch, which comprises a casing. An emitter and a receiver are arranged in the casing, an optical filter is arranged at the signalization end of the casing, and the emitter and the receiver are both inclined inwards at specific angles. The photoelectric induction switch aims at guaranteeing that the light with enough intensity is received by the receiver after being reflected by a shelter, thereby triggering a control circuit. The receiver is a non-protein nitrogen (NPN) type photosensitive triode or a plug-and-play (PNP) photosensitive triode, and the casing is made of light-proof engineering plastics. The photoelectric induction switch overcomes the shortcoming of short service life and low sensitivity of a mechanical switch, enables optical signals to be converted into electrical signals so as to control open and close of a circuit, and avoids mechanical movement of the mechanical switch, thereby prolonging service life and improving sensitivity.

Description

A kind of photoelectric sensor switch

Technical field

The utility model relates to a kind of switch, specifically a kind of photoelectric sensor switch.

Background technology

At present, various device or device are gone up the logic switch that is used to control mains switch that uses, and what use basically all is mechanical switch.Through pressing mechanical switch, produce logic level signal, the functional module in trigger equipment or the device realizes function corresponding.But mechanical switch comes down to a kind of contact switch, has contact resistance, makes that its mechanical endurance is shorter; Mechanical switch is easy to make moist, thereby influences the operate as normal of equipment or device, and mechanical switch switches on or off the certain stroke of process need simultaneously; That is to say; Operation has a time difference with the control result, influences its sensitivity, does not suit on some precision instruments or equipment, to use.

The utility model content

The purpose of the utility model provides a kind of simple in structure, precise control, the photoelectric sensor switch of long service life.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:

A kind of photoelectric sensor switch; Comprise housing, in housing, be provided with reflector and receiver, be provided with filter at the signal effect end of housing; Reflector and the receiver certain angle that all slopes inwardly; Its objective is that the light of assurance sufficient intensity is received by the receiver after reflecting through shelter, thus trigger control circuit.

Described receiver is NPN type phototriode or the photosensitive triode of positive-negative-positive.

The material of described housing is light tight engineering plastics.

The beneficial effect of the utility model is:

It is short that the utility model has remedied the existing machinery switch life, and the defective that sensitivity is low is transformed into the signal of telecommunication with light signal and comes the control circuit break-make, has avoided the mechanical movement of mechanical switch, thereby reaches the purpose that increases the service life, improves sensitivity.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.

Fig. 1 is the structural representation of the utility model;

Embodiment

A kind of photoelectric sensor switch 2; Comprise housing 20, in housing 20, be provided with reflector 21 and receiver 22, be provided with filter 24 at the signal effect end of housing 20; Reflector 21 and receiver 22 certain angle that all slopes inwardly; Its objective is that the light of assurance sufficient intensity is received by the receiver after reflecting through shelter 1, thus trigger control circuit.

Described receiver 22 is NPN type phototriode or the photosensitive triode of positive-negative-positive.

The material of described housing 20 is light tight engineering plastics.

The photoelectric sensor switch instead mechanical switch of the utility model; When shelter 1 contact housing 20 signal effect ends; The light signal that reflector 21 sends is blocked thing 1 reflection to receiver 22; Receiver 22 receiving optical signals, thus control circuit 23 sends control signal, thus the break-make of control peripheral circuit.

The purpose that filter 24 is set is to reduce the interference of extraneous light to receiver 22.

More than the disclosed specific embodiment that is merely this patent, but this patent is not limited thereto, for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, the distortion of making should be regarded as belonging to the utility model protection range.

Claims

1. a photoelectric sensor switch comprises housing, it is characterized in that: in housing, be provided with reflector and receiver, be provided with filter at the signal effect end of housing, reflector and the receiver certain angle that all slopes inwardly.

2. a kind of photoelectric sensor switch according to claim 1 is characterized in that: described receiver is NPN type phototriode or the photosensitive triode of positive-negative-positive.

3. a kind of photoelectric sensor switch according to claim 1 is characterized in that: the material of described housing is light tight engineering plastics.