Photoelectric switch with anti-light structure

Abstract

The utility model provides a photoelectric switch with an anti-light structure, and relates to the field of sensors. The photoelectric switch with the light-resistant structure comprises a rear shell, a front shell and a circuit board, an adjusting mechanism is fixedly connected to the right side of the rear side of the front shell and comprises an adjusting pipe and a threaded pipe, the adjusting pipe is arranged on the lower portion in the front shell, and the surface of the threaded pipe is in threaded connection with the inner wall of the adjusting pipe. The rear side of the front shell is detachably connected with the front side of the rear shell, and the side face of the circuit board is detachably connected with the inner wall of the rear shell. According to the photoelectric switch with the anti-light structure, the adjusting mechanism is arranged, the adjusting pipe rotationally connected with the fixing shell rotates to drive the threaded pipe to stretch out and draw back in the outer pipe, the exposed threaded pipe is adjusted to the proper length so that the infrared receiver can accurately receive infrared rays emitted by the infrared emitter in the shell, and the usable scene of the photoelectric switch is expanded; the use limitation of the photoelectric switch is reduced, and the cost performance of the photoelectric switch is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sensors, and specifically to a photoelectric switch with an anti-light structure. Background Art

[0002] A photoelectric switch is short for a photoelectric proximity switch. It uses the occlusion or reflection of a light beam by a detected object to connect a circuit through a synchronization circuit, thereby detecting the presence or absence of an object. The object is not limited to metal, and all objects that can reflect light (or have an occlusion effect on light) can be detected. The photoelectric switch converts the input current into a light signal on the transmitter and emits it. The receiver then detects the target object based on the intensity or presence or absence of the received light.

[0003] Patent No. CN220629320U discloses a photoelectric switch with an anti-light structure. This photoelectric switch with an anti-light structure uses a light-shielding cover with a light-transmitting channel as the anti-light structure. When the light emitted by the infrared transmitter passes through the lengthened light-transmitting channel, the light-transmitting channel can block the interfering light source, ensuring that the receiver only receives the light emitted by the opposed light source. Thus, the interference signal from the external light source is greatly reduced, the anti-light ability of the photoelectric switch is improved, and the accuracy of the photoelectric switch is further improved. However, the length of the light-transmitting channel of this switch is fixed, and different lighting environments have different requirements for the length of the light-transmitting channel. This switch has high requirements for the applicable scenarios and a relatively low cost performance. Utility Model Content

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present application provides a photoelectric switch with an anti-light structure, solving the problems mentioned in the above background art.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present application is realized through the following technical solutions: A photoelectric switch with an anti-light structure includes a rear case, a front case, and a circuit board. A regulating mechanism for adjusting the length of the light pipe that the photoelectric switch can receive is fixedly connected to the right side at the rear of the front case. The regulating mechanism includes a regulating pipe and a threaded pipe. The regulating pipe is arranged below the interior of the front case, and the surface of the threaded pipe is threadedly connected to the inner wall of the regulating pipe. The rear side of the front case is detachably connected to the front side of the rear case, and the side of the circuit board is detachably connected to the inner wall of the rear case.

[0008] By adopting the above technical solution, the rotation of the regulating pipe can drive the telescopic movement of the threaded pipe to adjust the length of the infrared receiving channel on the side of the infrared receiver, expanding the application requirements of the photoelectric switch for different scenarios.

[0009] Preferably, the adjustment mechanism further includes a fixed shell and an outer tube, the front side of the fixed shell is fixedly connected to the rear side of the front shell, the left side of the fixed shell is rotatably connected to one end of the adjustment tube, and the outer tube is fixedly connected to the left side of the inner wall of the fixed shell.

[0010] By adopting the above technical solution, the fixed shell can be located outside the infrared receiver to provide movement protection for the infrared receiver, and the outer tube serves as an internal channel for the infrared receiver to receive infrared rays and plays a role in connection with the threaded tube.

[0011] Preferably, the adjustment mechanism further comprises a shell, and the front side of the shell is fixedly connected to the left side of the interior of the front shell.

[0012] By adopting the above technical solution, the outer shell can be used to protect the infrared emitter.

[0013] Preferably, a fixing mechanism for fixing the position of the adjusting tube is fixedly connected to the upper left side of the fixing shell, and the fixing mechanism includes a fixing plate and a fixing hole. The fixing plate is fixedly connected to the upper left side of the fixing shell, and a telescopic tube is fixedly connected to the bottom of the fixing plate. The fixing holes are evenly arranged on the surface of the adjusting tube, and the inner wall of the fixing hole is slidably connected to the telescopic tube.

[0014] By adopting the above technical solution, the sliding connection between the telescopic tube at the bottom of the fixing plate and the fixing hole can be utilized to achieve the purpose of limiting the rotation of the adjusting tube provided with the fixing hole.

[0015] Preferably, the fixing mechanism also includes an adjusting plate and a spring, the adjusting plate is fixedly connected to the surface of the telescopic tube, the bottom of the spring is fixedly connected to the top of the adjusting plate, the top of the spring is fixedly connected to the bottom of the fixing plate, and the spring is located outside the telescopic tube.

[0016] By adopting the above technical solution, the adjustment plate can be used to move up and down to drive the telescopic tube to extend and retract, which makes it easier to adjust the extension and retraction of the telescopic tube. The spring can be used to fix the telescopic tube that is in contact with the inner wall of the fixing hole to prevent the telescopic tube from being separated from the fixing hole due to external vibration.

[0017] Preferably, a switch mechanism for controlling the switch is fixedly connected to the front side of the circuit board, and the switch mechanism includes an infrared transmitter and an infrared receiver. The infrared transmitter is fixedly connected to the left side of the circuit board, and the infrared receiver is fixedly connected to the right side of the circuit board. The infrared transmitter and the infrared receiver are on the same horizontal line.

[0018] By adopting the above technical solution, the infrared receiver can be used to receive the infrared rays emitted by the infrared transmitter, thereby providing a basic device for the operation of the photoelectric switch.

[0019] Preferably, the switch mechanism further includes a channel that facilitates light transmission and reduces interference from other external light to a certain extent. The channel is opened on the side of the front shell and the right side of the outer shell.

[0020] By adopting the above technical solution, the normal emission of infrared rays can be facilitated through the channel.

[0021] Preferably, the switch mechanism further includes a light-transmitting plate, which is fixedly connected to the inner wall of the channel.

[0022] By adopting the above technical solution, on the basis of ensuring the passage of infrared rays, the light-transmitting plate can prevent external substances from damaging the switch mechanism and the circuit board.

[0023] (III) Beneficial effects

[0024] This application provides a photoelectric switch with an anti-light structure, and the beneficial effects are as follows:

[0025] 1. For this photoelectric switch with an anti-light structure, by setting the adjustment mechanism, the adjustment tube rotatably connected to the fixed shell drives the threaded tube to expand and contract within the outer tube, and the exposed threaded tube is adjusted to an appropriate length so that the infrared receiver can accurately receive the infrared rays emitted by the infrared transmitter inside the outer shell, expanding the applicable scenarios of the photoelectric switch, reducing the usage limitations of the photoelectric switch, and improving the cost performance of the photoelectric switch.

[0026] 2. For this photoelectric switch with an anti-light structure, by setting the fixing mechanism, after the adjustment tube completes the adjustment task, the control of the adjustment plate is released, and the telescopic tube at the bottom of the fixing plate extends under the driving force of the self-elastic force of the spring until the bottom of the telescopic tube fits with the bottom inner wall of the fixing hole, achieving the purpose of restricting and fixing the adjustment tube, and avoiding the situation that the external vibration drives the adjustment tube to rotate and thus affects the operation accuracy of the photoelectric switch, enhancing the stability of the adjustment tube in daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic diagram of the left-view and top-view external shape structure of this application;

[0029] Figure 2 It is a schematic diagram of the left-view and top-view external shape structure of the rear shell of this application;

[0030] Figure 3Schematic diagram of the external shape structure of the circuit board in the right view and top view of this application;

[0031] Figure 4 Schematic diagram of the external shape structure of the circuit board in the left view and top view of this application;

[0032] Figure 5 Schematic diagram of the external shape structure of the front shell in the right view and top view of this application;

[0033] Figure 6 Schematic diagram of the enlarged structure of part A of this application;

[0034] Figure 7 Schematic diagram of the external shape structure of part of the mechanism in the rear view and top view of this application;

[0035] Figure 8 Schematic diagram of the enlarged structure of part B of this application.

[0036] In the figure: 1. Rear shell; 2. Front shell; 3. Circuit board; 4. Switch mechanism; 401. Infrared emitter; 402. Channel; 403. Translucent plate; 404. Infrared receiver; 5. Adjusting mechanism; 501. Outer shell; 502. Fixed shell; 503. Outer tube; 504. Adjusting tube; 505. Threaded tube; 6. Fixing mechanism; 601. Fixed plate; 602. Telescopic tube; 603. Adjusting plate; 604. Spring; 605. Fixing hole. Detailed implementation manners

[0037] It should be noted that in the description of the embodiments of this application, the orientation or positional relationships indicated by terms such as "front, rear", "left, right", "upper, lower", etc. are all based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. The terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The following further elaborates on this application through the drawings and embodiments.

[0039] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8, an embodiment of the present application provides a photoelectric switch with an anti-light structure, which includes a rear shell 1, a front shell 2, and a circuit board 3. A regulating mechanism 5 for adjusting the length of the light pipe that the photoelectric switch can receive is fixedly connected to the right side of the rear side of the front shell 2. The regulating mechanism 5 includes a regulating pipe 504 and a threaded pipe 505. The regulating pipe 504 is arranged below the inside of the front shell 2, and the surface of the threaded pipe 505 is threadedly connected to the inner wall of the regulating pipe 504. A fixed shell 502 is fixedly connected to the rear side of the front shell 2, and the left side of the fixed shell 502 is rotatably connected to one end of the regulating pipe 504. An outer pipe 503 is fixedly connected to the left side inner wall of the fixed shell 502. An outer shell 501 is fixedly connected to the left side inside of the front shell 2. The rear side of the front shell 2 is detachably connected to the front side of the rear shell 1, and the side of the circuit board 3 is detachably connected to the inner wall of the rear shell 1. The rotating regulating pipe 504 rotatably connected to the fixed shell 502 drives the threaded pipe 505 to expand and contract within the outer pipe 503, and the exposed threaded pipe 505 is adjusted to an appropriate length so that the infrared receiver 404 can accurately receive the infrared rays emitted by the infrared emitter 401 inside the outer shell 501.

[0040] Referring to Figure 7 and Figure 8 , in one aspect of this embodiment, a fixing mechanism 6 for fixing the position of the regulating pipe 504 is fixedly connected to the upper left side of the fixed shell 502. The fixing mechanism 6 includes a fixing plate 601 and fixing holes 605. The fixing plate 601 is fixedly connected to the upper left side of the fixed shell 502. A telescopic pipe 602 is fixedly connected to the bottom of the fixing plate 601. The fixing holes 605 are evenly opened on the surface of the regulating pipe 504, and the inner wall of the fixing holes 605 is slidably connected to the telescopic pipe 602. A regulating plate 603 is fixedly connected to the surface of the telescopic pipe 602. A spring 604 is fixedly connected to the top of the regulating plate 603. The top of the spring 604 is fixedly connected to the bottom of the fixing plate 601. The spring 604 is located outside the telescopic pipe 602. After the regulating pipe 504 completes the adjustment task, the control of the regulating plate 603 is released, and the telescopic pipe 602 at the bottom of the fixing plate 601 extends under the driving of the self-elastic force of the spring 604 until the bottom of the telescopic pipe 602 fits with the bottom inner wall of the fixing holes 605.

[0041] Referring to Figure 4 , Figure 5 , Figure 6 and Figure 7, in one aspect of this embodiment, a switch mechanism 4 for controlling a switch is fixedly connected to the front side of the circuit board 3. The switch mechanism 4 includes an infrared emitter 401 and an infrared receiver 404. The infrared emitter 401 is fixedly connected to the left side of the circuit board 3, and the infrared receiver 404 is fixedly connected to the right side of the circuit board 3. The infrared emitter 401 and the infrared receiver 404 are on the same horizontal line. A channel 402 for facilitating light transmission and reducing interference from other external lights to a certain extent is provided on the side of the front shell 2 and the right side of the outer shell 501. A light-transmitting plate 403 is fixedly connected to the inner wall of the channel 402. The infrared rays emitted by the infrared emitter 401 are received by the infrared receiver 404 through the light-transmitting plate 403 in the channel 402.

[0042] In this solution, all electrical devices are powered by an external power supply.

[0043] Working principle: During use, controlling the upward movement of the adjustment plate 603 drives the telescopic tube 602 to disengage from the fixing hole 605. The adjustment tube 504 rotatably connected to the fixed shell 502 rotates to drive the threaded tube 505 to expand and contract within the outer tube 503, and the exposed threaded tube 505 is adjusted to an appropriate length. After releasing the control of the adjustment plate 603, the telescopic tube 602 at the bottom of the fixing plate 601 extends under the action of the self-elastic force of the spring 604 until the bottom of the telescopic tube 602 fits against the bottom inner wall of the fixing hole 605. The infrared rays emitted by the infrared emitter 401 are received by the infrared receiver 404 in sequence through the light-transmitting plate 403 in the channel 402, the threaded tube 505, and the outer tube 503.

[0044] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A photoelectric switch with a light-resistant structure, comprising a rear shell (1), a front shell (2) and a circuit board (3), characterized in that: An adjusting mechanism (5) for adjusting the length of the light pipe that can be received by the photoelectric switch is fixedly connected to the right side of the rear side of the front shell (2), and the adjusting mechanism (5) comprises an adjusting tube (504) and a threaded tube (505). The adjusting tube (504) is arranged at the lower part of the interior of the front shell (2), and the surface of the threaded tube (505) is threadedly connected to the inner wall of the adjusting tube (504). The rear side of the front shell (2) is detachably connected to the front side of the rear shell (1), and the side surface of the circuit board (3) is detachably connected to the inner wall of the rear shell (1).

2. The photoelectric switch with a light-resistant structure according to claim 1, characterized in that: The adjustment mechanism (5) further comprises a fixed shell (502) and an outer tube (503); the front side of the fixed shell (502) is fixedly connected to the rear side of the front shell (2); the left side of the fixed shell (502) is rotatably connected to one end of the adjustment tube (504); and the outer tube (503) is fixedly connected to the left side of the inner wall of the fixed shell (502).

3. The photoelectric switch with a light-resistant structure according to claim 2, characterized in that: The adjustment mechanism (5) further comprises a housing (501), the front side of the housing (501) being fixedly connected to the left side inside the front shell (2).

4. The photoelectric switch with a light-resistant structure according to claim 2, characterized in that: A fixing mechanism (6) for fixing the position of the adjusting tube (504) is fixedly connected to the upper left side of the fixing shell (502), and the fixing mechanism (6) comprises a fixing plate (601) and a fixing hole (605). The fixing plate (601) is fixedly connected to the upper left side of the fixing shell (502), and a telescopic tube (602) is fixedly connected to the bottom of the fixing plate (601). The fixing holes (605) are evenly arranged on the surface of the adjusting tube (504), and the inner wall of the fixing hole (605) is slidably connected to the telescopic tube (602).

5. The photoelectric switch with a light-resistant structure according to claim 4, characterized in that: The fixing mechanism (6) further comprises an adjusting plate (603) and a spring (604); the adjusting plate (603) is fixedly connected to the surface of the telescopic tube (602); the bottom of the spring (604) is fixedly connected to the top of the adjusting plate (603); the top of the spring (604) is fixedly connected to the bottom of the fixing plate (601); and the spring (604) is located outside the telescopic tube (602).

6. The photoelectric switch with a light-resistant structure according to claim 1, characterized in that: A switch mechanism (4) for controlling a switch is fixedly connected to the front side of the circuit board (3); the switch mechanism (4) comprises an infrared transmitter (401) and an infrared receiver (404); the infrared transmitter (401) is fixedly connected to the left side of the circuit board (3); the infrared receiver (404) is fixedly connected to the right side of the circuit board (3); and the infrared transmitter (401) and the infrared receiver (404) are on the same horizontal line.

7. The photoelectric switch with a light-resistant structure according to claim 6, characterized in that: The switch mechanism (4) also includes a channel (402) that facilitates light transmission and reduces interference from other external lights to a certain extent. The channel (402) is opened on the side of the front shell (2) and the right side of the outer shell (501).

8. The photoelectric switch with a light-resistant structure according to claim 7, characterized in that: The switch mechanism (4) further comprises a light-transmitting plate (403), wherein the light-transmitting plate (403) is fixedly connected to the inner wall of the channel (402).

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