CN216451355U

CN216451355U - Diffuse reflection photoelectric switch

Info

Publication number: CN216451355U
Application number: CN202123024465.5U
Authority: CN
Inventors: 林海东; 赵春松
Original assignee: Dongguan Mokeweier Industrial Control Co ltd
Current assignee: Dongguan Mokeweier Industrial Control Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-06
Anticipated expiration: 2031-12-06

Abstract

The utility model relates to a diffusely reflective optoelectronic switch comprising: the induction assembly comprises a shell, a light guide cup arranged in the shell, a light emitting diode arranged in one end of the light guide cup, a photodiode connected with the other end of the light guide cup, a copper pipe sleeved at the joint of the light guide cup and the photodiode, an amplifying circuit module connected with the photodiode, and a signal wire connected with the amplifying circuit module; the signal wire is a metal carrier signal wire; the main control assembly is connected to one end of the induction assembly; the signal line is used for connecting the main control assembly. Above-mentioned diffuse reflection photoelectric switch, simple structure, small in size leads the one end installation emitting diode of light cup, leads the other end of light cup and connects photodiode, utilizes leaded light cup conduction light, saves optical fiber material, and the signal line is convenient to be buckled, can be applied to the narrow and small place in space, improves the practicality greatly.

Description

Diffuse reflection photoelectric switch

Technical Field

The utility model relates to the technical field of photoelectric switches, in particular to a diffuse reflection photoelectric switch.

Background

Diffuse reflection photoelectric switch, which detects the existence of an object by utilizing the reflection of the object to light, wherein the detected object can be metal or nonmetal, and the diffuse reflection photoelectric switch is widely used in the application of detection, counting and the like in the field of mechanical automation.

But diffuse reflection photoelectric switch on the existing market is generally bulky, and inductive head and function main part integration to utilize optic fibre as light conduction device, lead to the product size great, optic fibre is difficult for buckling, can't be applied to the narrow and small place in space and some accurate places, the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

Based on the diffuse reflection photoelectric switch, the diffuse reflection photoelectric switch is simple in structure and small in size, light is transmitted by the light guide cup, optical fiber materials are omitted, bending is convenient, the diffuse reflection photoelectric switch can be applied to narrow and small places, and practicability is greatly improved.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a diffusely reflective optoelectronic switch, comprising:

the induction assembly comprises a shell, a light guide cup arranged in the shell, a light emitting diode arranged in one end of the light guide cup, a photodiode connected with the other end of the light guide cup, a copper pipe sleeved at the joint of the light guide cup and the photodiode, an amplifying circuit module connected with the photodiode, and a signal wire connected with the amplifying circuit module; the signal wire is a metal carrier signal wire; and

the main control assembly is connected to one end of the induction assembly; the signal line is used for connecting the main control assembly.

Above-mentioned diffuse reflection photoelectric switch, simple structure, small in size leads the one end installation emitting diode of light cup, leads the other end of light cup and connects photodiode, utilizes leaded light cup conduction light, saves optical fiber material, and the signal line is convenient to be buckled, can be applied to the narrow and small place in space, improves the practicality greatly.

In one embodiment, the main control assembly comprises a control box, a main control circuit board arranged in the control box, and a power line connected with the main control circuit board; the master control circuit board is connected with the signal line and is also electrically connected with the light emitting diode.

In one embodiment, the shell comprises a metal sleeve which is arranged in a cylindrical shape, a nut which is sleeved on the outer surface of the metal sleeve, and a wire protection sleeve which is connected to one end of the metal sleeve; the metal sleeve is used for accommodating and installing the light guide cup, the light emitting diode, the photodiode, the copper pipe and the amplifying circuit module; the wire protecting sleeve is used for sleeving the joint of the metal sleeve and the signal wire.

In one embodiment, the light guide cup is coaxially arranged inside the metal sleeve, the front end of the light guide cup is provided with an accommodating cavity, and the rear end of the light guide cup is provided with an abutting part; the accommodating cavity is used for accommodating and mounting the light emitting diode, and the abutting part is used for abutting against the photodiode.

In one embodiment, the light guide cup is made of a high-transparency PC material.

In one embodiment, the front end surface of the light guide cup is flush with the front end surface of the metal sleeve, and the front end surface of the light guide cup is flush with the emitting end surface of the light emitting diode.

Drawings

FIG. 1 is a perspective view of a diffusely reflective optoelectronic switch in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged schematic view taken at circle A of FIG. 1;

FIG. 3 is an exploded schematic view of an induction assembly of the diffusely reflective optoelectronic switch of FIG. 1;

FIG. 4 is a cross-sectional view of a light guide cup in the diffuse reflection electro-optical switch shown in FIG. 3;

figure 5 is a cross-sectional view of the diffusely reflective optoelectronic switch of figure 1;

fig. 6 is an enlarged schematic view of the circle B shown in fig. 5.

Reference is made to the accompanying drawings in which:

10-an induction component, 11-a shell, 111-a metal sleeve, 112-a nut, 113-a wire protecting sleeve, 12-a light guide cup, 121-a containing cavity, 122-a butting part, 13-a light emitting diode, 14-a photodiode, 15-a copper pipe, 15-an amplifying circuit module and 17-a signal wire;

20-main control assembly, 21-control box, 22-main control circuit board and 23-power line.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 6, a diffuse reflection photoelectric switch according to an embodiment of the present invention includes a sensing element 10 and a main control element 20 connected to one end of the sensing element 10.

The sensing assembly 10 comprises a shell 11, a light guide cup 12 arranged in the shell 11, a light emitting diode 13 arranged in one end of the light guide cup 12, a photodiode 14 connected to the other end of the light guide cup 12, a copper pipe 15 sleeved at the joint of the light guide cup 12 and the photodiode 14, an amplifying circuit module 16 connected with the photodiode 14, and a signal wire 17 connected with the amplifying circuit module 16; the signal line 17 is used for connecting the main control assembly 20. In this embodiment, the signal line 17 is a metal carrier signal line, and compared with the defect that the optical fiber is easy to break, the signal line 17 has the characteristics of being capable of being bent at will and being not easy to age, so that the severe environment of an industrial field is met to the maximum extent, and the practicability is greatly improved.

In the present embodiment, the housing 11 includes a metal sleeve 111 disposed in a cylindrical shape, a nut 112 sleeved on an outer surface of the metal sleeve 111, and a wire sheath 113 connected to one end of the metal sleeve 111, wherein the metal sleeve 111 is used for accommodating and mounting the light guide cup 12, the light emitting diode 13, the photodiode 14, the copper tube 15, and the amplifying circuit module 16. The wire sheath 113 is used to sheath the connection position of the metal sleeve 111 and the signal wire 17 to protect the connection of the signal wire 17.

As shown in fig. 3 to 6, the light guide cup 12 is coaxially installed inside the metal sleeve 111, the front end of the light guide cup 12 is provided with an accommodating cavity 121, and the rear end of the light guide cup 12 is provided with an abutting portion 122. Wherein, the accommodating cavity 121 is used for accommodating and mounting the light emitting diode 13, and the abutting part 122 is used for abutting against the photodiode 14. In this embodiment, light guide cup 12 is made of highly transparent PC material, and light guide cup 12 is located metal sleeve 111's inside, can compare in the optic fibre conduction mode, utilizes light guide cup 12 to carry out light conduction with better concentration of light, can effectively reduce the loss of light, and detection distance can improve about 20%.

In actual work, the light emitting diode 13 emits modulated light outwards, the modulated light forms reflection after contacting with a detection object, the light guide cup 12 collects the reflected light and conducts the reflected light to the photodiode 14 to be converted into an electric signal, and the electric signal is transmitted to the main control assembly 20 through the amplifying circuit module 16 and the signal wire 17 to be processed.

In the present embodiment, the front end surface of the light guide cup 12 is flush with the front end surface of the metal sleeve 111, and the front end surface of the light guide cup 12 is flush with the emission end surface of the light emitting diode 13. The light emitting diode 13 is preferably a 3mm laser tube, can realize high induction precision when the light spot diameter is 1mm and the lateral detection is carried out, is particularly suitable for processing and manufacturing precise parts, and has wide application in the fields of electronic components, pharmacy, textile, tobacco, food, chemical industry, mine, plastics, printing and the like.

The main control assembly 20 includes a control box 21, a main control circuit board 22 installed in the control box 21, and a power line 23 connected to the main control circuit board 22. The main control circuit board 22 is connected to the signal line 17, and the main control circuit board 22 is electrically connected to the light emitting diode 13 to control the light emitting diode 13 to emit the modulated light. In actual operation, the main control circuit board 22 receives the electrical signal transmitted from the amplifying circuit module 16, and outputs an NPN or PNP sensor signal after processing.

Above-mentioned diffuse reflection photoelectric switch, simple structure, small in size, light emitting diode 13 is installed to the one end of light guide cup 12, and photodiode 14 is connected to the other end of light guide cup 12, utilizes light guide cup 12 conduction light, saves the fiber optic material, and signal line 17 conveniently buckles, can be applied to the narrow and small place in space, improves the practicality greatly.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A diffusely reflective optoelectronic switch, comprising:

2. The diffuse reflectance electrical switch of claim 1, wherein the master control assembly comprises a control box, a master control circuit board mounted within the control box, and a power cord connected to the master control circuit board; the master control circuit board is connected with the signal line and is also electrically connected with the light emitting diode.

3. The diffuse reflection photoelectric switch of claim 1, wherein the housing comprises a metal sleeve disposed in a cylindrical shape, a nut sleeved on an outer surface of the metal sleeve, and a wire sheath connected to one end of the metal sleeve; the metal sleeve is used for accommodating and installing the light guide cup, the light emitting diode, the photodiode, the copper pipe and the amplifying circuit module; the wire protecting sleeve is used for sleeving the joint of the metal sleeve and the signal wire.

4. The diffuse reflection photoelectric switch of claim 3, wherein the light guide cup is coaxially installed inside the metal sleeve, a containing cavity is arranged at the front end of the light guide cup, and an abutting part is arranged at the rear end of the light guide cup; the accommodating cavity is used for accommodating and mounting the light emitting diode, and the abutting part is used for abutting against the photodiode.

5. The diffusely reflective optoelectronic switch of claim 1, wherein said light conducting cup is made of a highly transparent PC material.

6. The diffuse reflectance photoelectric switch according to claim 1, wherein a front end surface of the light guide cup is flush with a front end surface of the metal sleeve, and a front end surface of the light guide cup is flush with an emission end surface of the light emitting diode.