A light-dependent resistor

Abstract

The utility model discloses a kind of adjustable distance pair of photoelectric switch devices, involve photoelectric switch technical field, including: switch base, transmitter, receiver, two-way lead screw and electric guide rod, switch base is opened with sliding slot, sliding slot is opened with two, two sliding slots are symmetrically arranged about switch base middle part, still opening mounting hole on switch base, transmitter lower end slidingly embedded in one of sliding slot;Transmitter and receiver lower end are each equipped with connecting pin, connecting pin and electric guide rod sliding lap joint, the utility model is improved by the cooperation of switch base, two-way lead screw, electric guide rod and connecting pin, staff only needs to rotate two-way lead screw, transmitter and receiver can be driven along two sliding slots sliding, and transmitter and receiver are made to approach or move away each other, so as to adjust the distance of the pair of photoelectric switch, satisfy the use demand of different width object, use need not to replace or switch use, use more convenient.

Description

Technical Field

[0001] This utility model relates to the field of photoelectric switch technology, and in particular to a through-beam photoelectric switch device with adjustable spacing. Background Technology

[0002] A through-beam photoelectric switch consists of a transmitter and a receiver. Its working principle is as follows: light emitted by the transmitter directly enters the receiver. When the object being detected passes between the transmitter and the receiver and blocks the light, the photoelectric switch generates a switching signal.

[0003] A search revealed a through-beam photoelectric switch in patent document CN211239818U. This switch includes a housing, a transmitter, and a receiver. The housing comprises a first housing and a second housing, which are positioned opposite each other. The transmitter, located in the first housing, emits infrared light. The receiver, located in the second housing, receives the infrared light emitted by the transmitter. The first housing has an infrared light emitting surface, and the second housing has an infrared light receiving surface. Both the emitting and receiving surfaces are made of a selective filtering material that blocks visible light while allowing infrared light to pass through. Neither the emitting nor receiving surfaces have any openings.

[0004] Based on the above search and combined with existing technology, it was found that the transmitter and receiver of existing through-beam photoelectric switch devices are usually set to a fixed distance. However, in the existing technology, it is often necessary to install through-beam photoelectric switch devices with different spacings under different usage conditions. If a through-beam photoelectric switch device with a fixed spacing is used, it is necessary to replace or install multiple switching devices, which is inconvenient to use. Therefore, there is a need for a through-beam photoelectric switch device with adjustable spacing. Utility Model Content

[0005] The purpose of this application is to provide a through-beam photoelectric switch device with adjustable pitch to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a through-beam photoelectric switch device with adjustable spacing, comprising:

[0007] The switch base has two sliding grooves, which are symmetrically arranged about the middle of the switch base. The extension direction of the sliding grooves is consistent with the length of the switch base. The switch base also has mounting holes that extend through the entire switch base along its length.

[0008] The transmitter has its lower end slidably embedded in one of the grooves.

[0009] The receiver is slidably embedded in another groove at its lower end.

[0010] A bidirectional lead screw, with its two ends rotatably connected to the mounting holes on both sides of the switch base. Both ends of the bidirectional lead screw have operating heads. The two threaded parts on the bidirectional lead screw are symmetrically distributed along the middle of the bidirectional lead screw, and the two threaded parts on the bidirectional lead screw are distributed to the transmitter and receiver thread adapters.

[0011] The electric conductor rod is fixed in the lower part of the slide groove. Both the transmitter and receiver are provided with connection pins at their lower ends, and the connection pins slide and overlap with the electric conductor rod.

[0012] Preferably, the bidirectional lead screw includes a first screw and a second screw arranged coaxially, and the threaded portions on the first screw and the second screw are symmetrically arranged;

[0013] The first screw is located in one of the grooves, and its two ends are rotatably connected to two mounting holes in the middle of the switch base and on one side of the switch base, respectively. The second screw is located in another groove, and its two ends are rotatably connected to two mounting holes in the middle of the switch base and on the other side of the switch base, respectively. The two operating ends are integrally formed on the ends of the first screw and the second screw that are far apart from each other.

[0014] The switch base has a mounting cavity in the middle, and an adjustment mechanism is slidably installed in the mounting cavity. The adjustment mechanism is used to drive the first screw and the second screw, and the adjustment mechanism is also used to disconnect the drive connection between the first screw and the second screw.

[0015] Preferably, the adjusting mechanism includes:

[0016] The connecting post has its axis parallel to the axis of the first screw. When the axis of the connecting post coincides with the axis of the first screw, the two ends of the connecting post are respectively pressed against the ends of the first screw and the second screw that are close to each other.

[0017] The slider is slidably embedded in the mounting cavity. The slider is rotatably connected to the connecting column through a bearing. The slider slides horizontally. When the slider slides to one side of the mounting cavity, the two ends of the connecting column are pressed against the ends of the first screw and the second screw that are close to each other and their axes coincide. When the slider slides to the other side of the mounting cavity, the two ends of the connecting column are completely separated from the ends of the first screw and the second screw that are close to each other.

[0018] Preferably, the switch base has an insertion hole in the middle, and the upper end of the slider has two positioning holes. When the slider moves to both sides of the mounting cavity, there is a positioning hole that corresponds to the position of the insertion hole. A positioning pin is inserted into the insertion hole, and the lower end of the positioning pin is inserted into the positioning hole.

[0019] A notch is provided at the top opening of the socket.

[0020] Preferably, a sliding hole is provided on one side of the switch base, one end of the sliding hole is connected to the mounting cavity, and the other end of the sliding hole penetrates through the side wall of the switch base. A drive rod that slides through the sliding hole is fixed on one side of the slider, and the end of the drive rod away from the slider extends to the outside of the switch base and is integrally formed with an operating handle.

[0021] Preferably, flexible friction-increasing shims are fixed at both ends of the connecting column. When the connecting column coincides with the axis of the first screw, the two friction-increasing shims are respectively located between the connecting column and the first screw, and between the connecting column and the second screw. The two friction-increasing shims are respectively interference-fitted with one end of the connecting column, the end of the first screw near the connecting column, the other end of the connecting column, and the end of the second screw near the connecting column.

[0022] Preferably, the lower end of the connecting pin is integrally formed with a C-shaped pin overlap portion, which is slidably snapped onto the conductive rod.

[0023] Preferably, both sides of the switch base are integrally formed with mounting ears for fixing the switch base, and the end of the electric conductor rod near the adjustment mechanism is integrally formed with a conductor rod pin that is electrically connected to the external circuit. The lower end of the conductor rod pin is fixed through the bottom of the switch base and extends to the bottom of the switch base.

[0024] In summary, the technical effects and advantages of this utility model are as follows:

[0025] 1. In this utility model, through the improved cooperation of the switch base, bidirectional lead screw, electric conductor rod and connecting pin, the operator only needs to rotate the bidirectional lead screw to drive the transmitter and receiver to slide along the two slides, so that the transmitter and receiver move closer or further apart, thereby adjusting the spacing of the photoelectric switch to meet the needs of objects of different widths. No replacement or switching is required, making it more convenient to use; it provides a stable power supply to the transmitter and receiver before and after adjustment, meeting the power connection requirements of the transmitter and receiver.

[0026] 2. In this utility model, by setting the adjustment mechanism, the transmitter and receiver can be adjusted synchronously or separately. This not only makes the adjustment more flexible, but also allows for the adaptation of irregularly shaped objects protruding on one side to pass between the transmitter and receiver when adjusting the position separately, thus meeting the sensing needs of various objects.

[0027] 3. In this utility model, the operator can restrict the movement of the slider by inserting the positioning pin into the insertion hole and the positioning hole, so that the position of the connecting column after adjustment is stable and reliable, providing a stable transmission connection between the first screw and the second screw, and at the same time, the positioning pin can be pulled out to facilitate the movement of the slider.

[0028] 4. In this utility model, by setting the friction-enhancing shim, the connection stability between the first screw, the second screw, and the connecting column can be improved when the first screw and the second screw are connected by the connecting column, thereby making the movement synchronization of the first screw and the second screw better. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0031] Figure 2 This is a cross-sectional view of the switch base in this embodiment;

[0032] Figure 3 This is a side sectional view of the switch base in this embodiment;

[0033] Figure 4 This is a schematic diagram of the adjustment mechanism structure in this embodiment;

[0034] Figure 5 This is a schematic diagram of the receiver and connection pin structure in this embodiment.

[0035] In the diagram: 1. Switch base; 11. Slide groove; 12. Mounting hole; 13. Mounting cavity; 14. Socket; 141. Groove; 15. Slide hole; 16. Mounting ear plate; 2. Transmitter; 3. Receiver; 4. Bidirectional lead screw; 41. First screw; 42. Second screw; 43. Operating end; 5. Conductor rod; 51. Conductor rod pin; 6. Adjustment mechanism; 61. Connecting post; 62. Slider; 621. Positioning hole; 63. Drive rod; 631. Operating handle; 64. Bearing; 7. Positioning pin; 8. Friction-increasing shim; 9. Connecting pin; 91. Pin overlap. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Example: Reference Figures 1-5The adjustable-pitch photoelectric switch device includes: a switch base 1, a transmitter 2, a receiver 3, a bidirectional lead screw 4, and an electric conductor 5. The switch base 1 has two sliding grooves 11, which are symmetrically arranged about the middle of the switch base 1. The extension direction of the sliding grooves 11 is consistent with the length of the switch base 1. The switch base 1 also has mounting holes 12, which penetrate the entire switch base 1 along the length of the switch base 1.

[0038] The lower end of the transmitter 2 is slidably embedded in one of the grooves 11, and the lower end of the receiver 3 is slidably embedded in the other groove 11;

[0039] The two ends of the bidirectional lead screw 4 are respectively rotatably connected to the mounting holes 12 on both sides of the switch base 1. Both ends of the bidirectional lead screw 4 have operating ends 43. The two threaded parts on the bidirectional lead screw 4 are symmetrically distributed along the middle of the bidirectional lead screw 4, and the two threaded parts on the bidirectional lead screw 4 are distributed to the transmitter 2 and receiver 3 thread adapters.

[0040] The conductor rod 5 is fixed in the lower part of the slide groove 11. The transmitter 2 and receiver 3 are both provided with connection pins 9 at their lower ends. The connection pins 9 slide and overlap with the conductor rod 5.

[0041] Based on the above structure, the operator only needs to rotate the bidirectional lead screw 4 to drive the transmitter 2 and receiver 3 to slide along the two slides 11, and make the transmitter 2 and receiver 3 move closer or further away from each other, thereby adjusting the spacing of the photoelectric switch to meet the needs of objects of different widths. No replacement or switching is required, making it more convenient to use.

[0042] In addition, by improving the cooperation between the electric conductor 5 and the connecting pin 9, a stable power supply is provided to the transmitter 2 and the receiver 3 before and after adjustment, so as to meet the power connection requirements of the transmitter 2 and the receiver 3.

[0043] Furthermore, the bidirectional lead screw 4 includes a first screw 41 and a second screw 42 arranged coaxially, with the threaded portions on the first screw 41 and the second screw 42 arranged symmetrically;

[0044] The first screw 41 is located in one of the grooves 11, and the two ends of the first screw 41 are rotatably connected to two mounting holes 12 in the middle of the switch base 1 and on one side of the switch base 1, respectively. The second screw 42 is located in another groove 11, and the two ends of the second screw 42 are rotatably connected to two mounting holes 12 in the middle of the switch base 1 and on the other side of the switch base 1, respectively. The two operating ends 43 are integrally formed on the ends of the first screw 41 and the second screw 42 that are far apart from each other.

[0045] A mounting cavity 13 is provided in the middle of the switch base 1. An adjustment mechanism 6 is slidably installed in the mounting cavity 13. The adjustment mechanism 6 is used to drive the first screw 41 and the second screw 42. The adjustment mechanism 6 is also used to disconnect the drive connection between the first screw 41 and the second screw 42. This allows the transmitter 2 and the receiver 3 to be adjusted synchronously or separately. This not only makes the adjustment more flexible, but also allows for the adaptation of irregularly shaped objects protruding from one side to pass between the transmitter 2 and the receiver 3 when adjusting the position separately, thus meeting the sensing needs of various objects.

[0046] Furthermore, it also includes a distance sensor and an external controller installed on the opposite surfaces of the transmitter or receiver. The distance sensor is electrically connected to the controller. The distance sensor measures the distance between the two and feeds back the measured distance parameter to the controller. The controller compares the received distance parameter with a pre-input distance parameter. When they are equal, it issues a prompt, such as a flashing indicator light or a buzzer sound, to remind the user to stop adjusting. Alternatively, if the adjustment mechanism 6 uses an electronically controlled structure, the controller and adjustment mechanism 6 are electrically connected to achieve mutual linkage, thereby improving the level of intelligence. It is important to note that the placement of the distance sensor must ensure that it does not interfere with the normal operation of the transmitter 2 and receiver 3. The distance sensor typically uses infrared ranging and can be embedded to reduce light dispersion, further ensuring that it does not affect the normal operation of the transmitter 2 and receiver 3.

[0047] A contact switch is installed at the bottom of each end of the switch base 1. The two contact switches are electrically connected to the controller and are positioned downwards. When the switch base is installed on the circuit board (or other support), the contact switches are pressed and triggered, generating a high-level signal. When the controller receives high-level signals from both contact switches within a preset time period, it indicates that the installation is basically in place, and the ranging sensor's ranging function is triggered, thus achieving linkage and avoiding invalid ranging.

[0048] Limit switches are installed at both ends of the slide 11. All limit switches are electrically connected to the controller to limit the adjustment range and avoid damage to parts or assembly structures.

[0049] Furthermore, the regulating mechanism 6 includes:

[0050] The connecting post 61 has its axis parallel to the axis of the first screw 41. When the axis of the connecting post 61 coincides with the axis of the first screw 41, the two ends of the connecting post 61 are respectively pressed against the ends of the first screw 41 and the second screw 42 that are close to each other.

[0051] Slider 62 is slidably embedded in mounting cavity 13. Slider 62 is rotatably connected to connecting column 61 through bearing 64. Slider 62 slides horizontally.

[0052] When the slider 62 slides to one side of the mounting cavity 13, the two ends of the connecting post 61 abut against the ends of the first screw 41 and the second screw 42 that are close to each other and their axes coincide. At this time, the first screw 41 and the second screw 42 are connected by transmission through the connecting post 61. Therefore, rotating either the first screw 41 or the second screw 42 can drive the other to move. Since the threads of the first screw 41 and the second screw 42 are opposite, rotating either the first screw 41 or the second screw 42 can simultaneously drive the transmitter 2 and the receiver 3 to move synchronously, so that the two move closer to each other or further away from each other.

[0053] When the slider 62 slides to the other side of the mounting cavity 13, the two ends of the connecting post 61 are completely separated from the ends of the first screw 41 and the second screw 42 that are close to each other. At this time, the transmission connection between the first screw 41 and the second screw 42 is lost. The operator can adjust the position of the transmitter 2 or the receiver 3 by rotating the first screw 41 or the second screw 42 separately, thereby improving the flexibility when adjusting the distance between the two and adapting to different usage needs.

[0054] Furthermore, the switch base 1 has a socket 14 in the middle, and the upper end of the slider 62 has two positioning holes 621. When the slider 62 moves to both sides of the mounting cavity 13, there is a positioning hole 621 that corresponds to the position of the socket 14. A positioning pin 7 is inserted into the socket 14, and the lower end of the positioning pin 7 is inserted into the positioning hole 621.

[0055] A notch 141 is provided at the upper opening of the socket 14;

[0056] Workers can restrict the movement of slider 62 by inserting positioning pin 7 into insertion hole 14 and positioning hole 621, thereby making the position of connecting post 61 stable and reliable after adjustment, providing a stable transmission connection for first screw 41 and second screw 42, and can also pull out positioning pin 7 to facilitate the movement of slider 62.

[0057] Furthermore, a sliding hole 15 is provided on one side of the switch base 1. One end of the sliding hole 15 is connected to the mounting cavity 13, and the other end of the sliding hole 15 penetrates the side wall of the switch base 1. A drive rod 63 that slides through the sliding hole 15 is fixed on one side of the slider 62. The end of the drive rod 63 away from the slider 62 extends to the outside of the switch base 1 and is integrally formed with an operating handle 631.

[0058] Furthermore, flexible friction-increasing shims 8 are fixed at both ends of the connecting post 61. When the axis of the connecting post 61 coincides with that of the first screw 41, the two friction-increasing shims 8 are respectively located between the connecting post 61 and the first screw 41, and between the connecting post 61 and the second screw 42. The two friction-increasing shims 8 are respectively interference-fitted with one end of the connecting post 61, the end of the first screw 41 near the connecting post 61, the other end of the connecting post 61, and the end of the second screw 42 near the connecting post 61.

[0059] By setting the friction-enhancing shim 8, the connection stability between the first screw 41, the second screw 42, and the connecting post 61 can be improved when the first screw 41 and the second screw 42 are connected by the connecting post 61, thereby making the motion synchronization of the first screw 41 and the second screw 42 better.

[0060] Furthermore, a C-shaped pin overlap portion 91 is integrally formed at the lower end of the connecting pin 9. The pin overlap portion 91 is slidably snapped onto the conductive rod 5, making the electrical connection between the connecting pin 9 and the conductive rod 5 more stable and reliable.

[0061] Both sides of the switch base 1 are integrally formed with mounting ear plates 16 for fixing the switch base 1. The end of the electric conductor rod 5 near the adjustment mechanism 6 is integrally formed with a conductor rod pin 51 that is electrically connected to the external circuit (external circuits in the prior art, such as circuits of small household appliances, coin acceptors, automatic sensors, fax machines, scanners, etc., disclosed in https: / / baike.baidu.com / item / %E5%AF%B9%E5%B0%84%E5%BC%8F%E5%85%89%E7%94%B5%E5%BC%80%E5%85%B3 / 106710). The lower end of the conductor rod pin 51 is fixedly inserted through the bottom of the switch base 1 and extends to the bottom of the switch base 1.

[0062] The working principle of this utility model is as follows: In daily use, the operator can release the limit on the slider 62 by pulling out the positioning pin 7, and then pull the operating handle 631 and drive the slider 62 to slide in the mounting cavity 13 through the drive rod 63. When the slider 62 slides, it can drive the connecting column 61 to move synchronously, and make the connecting column 61 move to be coaxial with the first screw 41 and the second screw 42 or completely separated.

[0063] When the slider 62 slides to one side of the mounting cavity 13, the two ends of the connecting post 61 abut against the ends of the first screw 41 and the second screw 42 that are close to each other and their axes coincide. At the same time, the friction-enhancing shim 8 can improve the connection stability between the first screw 41, the second screw 42 and the connecting post 61. At this time, the first screw 41 and the second screw 42 are connected by transmission through the connecting post 61. Therefore, rotating either the first screw 41 or the second screw 42 can drive the other to move. Since the threads of the first screw 41 and the second screw 42 are opposite, rotating either the first screw 41 or the second screw 42 can simultaneously drive the transmitter 2 and the receiver 3 to move synchronously, so that the two move closer or further apart.

[0064] When the slider 62 slides to the other side of the mounting cavity 13, the two ends of the connecting post 61 are completely separated from the ends of the first screw 41 and the second screw 42 that are close to each other. At this time, the transmission connection between the first screw 41 and the second screw 42 is lost, and the operator can adjust the position of the transmitter 2 or the receiver 3 by rotating the first screw 41 or the second screw 42 separately.

[0065] After adjustment, the staff only needs to insert the positioning pin 7 back into the insertion hole 14 and the positioning hole 621 to achieve the purpose of restricting the movement of the slider 62.

[0066] It should be further noted that the technical features of the transmitter, receiver, etc. involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be conventionally selected in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0067] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A through-beam photoelectric switch device with adjustable spacing, characterized in that, include: A switch base is provided with two sliding grooves, which are symmetrically arranged about the middle of the switch base. The extension direction of the sliding grooves is consistent with the length of the switch base. The switch base is also provided with mounting holes that penetrate the entire switch base along its length. A transmitter, the lower end of which is slidably embedded in one of the grooves; The receiver is slidably embedded in another groove at its lower end. A bidirectional lead screw, wherein both ends of the bidirectional lead screw are rotatably connected to the mounting holes on both sides of the switch base, and both ends of the bidirectional lead screw have operating ends. The two threaded portions on the bidirectional lead screw are symmetrically distributed along the middle of the bidirectional lead screw, and the two threaded portions on the bidirectional lead screw are distributed for the transmitter and receiver thread adapters. An electric conductor rod is fixed in the lower part of the slide groove. Both the transmitter and the receiver are provided with connection pins at their lower ends, and the connection pins are slidably overlapped with the electric conductor rod.

2. The adjustable-gap photoelectric switch device according to claim 1, characterized in that: The bidirectional lead screw includes a first screw and a second screw arranged coaxially, and the threaded portions on the first screw and the second screw are symmetrically arranged. The first screw is located in one of the grooves, and its two ends are rotatably connected to two mounting holes in the middle of the switch base and one side of the switch base, respectively. The second screw is located in another groove, and its two ends are rotatably connected to two mounting holes in the middle of the switch base and the other side of the switch base, respectively. The two operating ends are integrally formed on the ends of the first screw and the second screw that are far apart from each other. The switch base has a mounting cavity in the middle, and an adjustment mechanism is slidably installed in the mounting cavity. The adjustment mechanism is used to drive the first screw and the second screw, and the adjustment mechanism is also used to disconnect the drive connection between the first screw and the second screw.

3. The adjustable-gap photoelectric switch device according to claim 2, characterized in that: The adjustment mechanism includes: A connecting post, the axis of which is parallel to the axis of the first screw, and when the axis of the connecting post coincides with the axis of the first screw, the two ends of the connecting post respectively abut against the ends of the first screw and the second screw that are close to each other; The slider is slidably embedded in the mounting cavity. The slider is rotatably connected to the connecting column through a bearing. The slider slides horizontally. When the slider slides to one side of the mounting cavity, the two ends of the connecting column are pressed against the ends of the first screw and the second screw that are close to each other and their axes coincide. When the slider slides to the other side of the mounting cavity, the two ends of the connecting column are completely separated from the ends of the first screw and the second screw that are close to each other.

4. The adjustable-gap photoelectric switch device according to claim 3, characterized in that: The switch base has an insertion hole in the middle, and the upper end of the slider has two positioning holes. When the slider moves to both sides of the mounting cavity, there is a positioning hole that corresponds to the position of the insertion hole. A positioning pin is inserted into the insertion hole, and the lower end of the positioning pin is inserted into the positioning hole. A notch is provided at the upper opening of the socket.

5. The adjustable-gap photoelectric switch device according to claim 4, characterized in that: A sliding hole is provided on one side of the switch base. One end of the sliding hole is connected to the mounting cavity, and the other end of the sliding hole penetrates the side wall of the switch base. A drive rod that slides through the sliding hole is fixed on one side of the slider. The end of the drive rod away from the slider extends to the outside of the switch base and is integrally formed with an operating handle.

6. The adjustable-pitch photoelectric switch device according to claim 3, characterized in that: Both ends of the connecting column are fixed with flexible friction-enhancing shims. When the connecting column coincides with the axis of the first screw, the two friction-enhancing shims are respectively located between the connecting column and the first screw, and between the connecting column and the second screw. The two friction-enhancing shims are respectively interference-fitted with one end of the connecting column, the end of the first screw near the connecting column, the other end of the connecting column, and the end of the second screw near the connecting column.

7. The adjustable-gap photoelectric switch device according to claim 2, characterized in that: The lower end of the connecting pin is integrally formed with a C-shaped pin overlap, which is slidably snapped onto the conductive rod.

8. The adjustable-gap photoelectric switch device according to claim 7, characterized in that: Both sides of the switch base are integrally formed with mounting ears for fixing the switch base. The end of the electric conductor rod near the adjustment mechanism is integrally formed with a conductor rod pin that is electrically connected to the external circuit. The lower end of the conductor rod pin is fixed through the bottom of the switch base and extends to the bottom of the switch base.

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