U-shaped photoelectric sensor

Abstract

The utility model relates to the technical field of sensors, and particularly discloses a U-shaped photoelectric sensor which comprises a sensor body and a mounting plate, the front surface of the mounting plate is provided with an adjusting mechanism, the front surface of the adjusting mechanism is fixedly provided with an assembling seat, and the right side of the assembling seat is provided with a limiting groove. The assembly base is connected with the sensor body in an inserted mode through the limiting groove, and a fixing mechanism is arranged on the inner side of the assembly base. By rotating a second rotating block, a rotating rod connected with the second rotating block rotates on a bottom shell, meanwhile, the rotating rod drives a second bevel gear to be in engaged transmission with a first bevel gear, a second screw rod connected with the first bevel gear rotates in a second sleeve shell, and a mounting block in threaded connection with the outer side of the second screw rod slides; the sensor body can be conveniently adjusted and used in the vertical direction, and therefore through the adjusting function of the sensor body, the requirement for adjustment and use of various different detection objects in the installation and actual use process can be greatly met.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a U-shaped photoelectric sensor. Background Art

[0002] A slot-type photoelectric sensor, also known as a U-shaped photoelectric sensor, consists of a light emitter and a receiver mounted face-to-face on opposite sides of a slot. The emitter can emit infrared or visible light, which the receiver can receive in the absence of obstruction. However, when an object passes through the slot, the light is blocked, causing the photoelectric switch to activate and output a switch control signal, cutting or connecting the load current, thus completing a control operation.

[0003] Chinese patent publication number CN220322407U discloses a slot-type photoelectric sensor, including a filter holder, an infrared emitting lamp, an infrared receiving lamp, a circuit board, an inner shell and an outer shell; the infrared emitting lamp is mounted on one end of the filter holder, the infrared receiving lamp is mounted on the other end of the filter holder, the circuit board is mounted on the filter holder, and the infrared emitting lamp and the infrared receiving lamp are both connected to the circuit board; the inner shell is injection molded on the filter holder, and the inner shell encloses the infrared emitting lamp, the infrared receiving lamp, a portion of the circuit board and a portion of the filter holder.

[0004] During the actual use of the photoelectric sensors in the above-mentioned prior art, we found that there are still some shortcomings. For example, traditional photoelectric sensors are generally installed by directly fixing the sensor at the use position with screws. When the photoelectric sensor needs to be disassembled and maintained, it is often necessary to use special disassembly tools to disassemble it from the installation position, which is very inconvenient. Secondly, since traditional photoelectric sensors do not have the adjustment function, first of all, during installation, once the installation position deviates, it is often necessary to re-drill holes and install them. In addition, when detecting objects of different sizes or styles, when the object cannot pass through the U-shaped groove of the photoelectric sensor, it is also necessary to re-disassemble and adjust the position of the photoelectric sensor according to the position of the object, which is very inconvenient. Utility Model Content

[0005] The purpose of the present utility model is to provide a U-shaped photoelectric sensor to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the utility model provides a U-shaped photoelectric sensor, comprising a sensor body and a mounting plate, wherein an adjustment mechanism is provided on the front of the mounting plate, an assembly seat is fixedly mounted on the front of the adjustment mechanism, a limiting groove is provided on the right side of the assembly seat, the assembly seat is plugged into the sensor body through the limiting groove, a fixing mechanism is provided on the inner side of the assembly seat, the assembly seat is clamped into the sensor body through the fixing mechanism, and a heat dissipation mechanism is symmetrically provided on the outer side of the sensor body;

[0007] The first gear is fixedly mounted on the front of the first housing, and the second gear is fixedly mounted on the front of the first housing, wherein the first gear is fixedly mounted on the front of the first housing, and the first gear is fixedly mounted on the front of the first housing.

[0008] The fixing mechanism includes a mounting groove, the mounting groove is symmetrically opened on a side of the assembly seat away from the limiting groove, a guide rod is symmetrically fixedly installed on the inner side of the mounting groove, the outer side of the guide rod is slidably connected to the same U-shaped plate, the outer side of the guide rod is sleeved with a spring, and a clamping block is fixedly installed on the side of the U-shaped plate away from the spring, the clamping end of the clamping block is movable and deep into the inner side of the limiting groove, the clamping end of the clamping block is clamped with the back side of the sensor body, and the fixing mechanism can facilitate the rapid disassembly and assembly of the sensor body;

[0009] The heat dissipation mechanism includes a positioning groove and a heat dissipation seat. The positioning groove is symmetrically opened on the outside of the sensor body. A through hole is opened on the inside of the positioning groove. The through hole and the interior of the sensor body are connected to each other. The heat dissipation seat is fixedly installed on the inside of the positioning groove by screws. A heat dissipation fin is fixedly connected to one side of the heat dissipation seat. A heat pipe is fixedly installed on the other side of the heat dissipation seat away from the heat dissipation fin. The heat pipe part of the heat dissipation seat extends into the inside of the through hole. Through the heat dissipation mechanism, the sensor body can be conveniently heat-dissipated and protected.

[0010] Furthermore, a first screw sleeve is fixedly installed on the inner side of the second housing, and the second housing is threadedly connected to the outer side of the first screw through the first screw sleeve. The first screw sleeve can facilitate the threaded connection of the second housing to the first housing.

[0011] Furthermore, a first sliding rod is symmetrically fixedly installed on the inner side of the first shell, and the second shell is slidably connected to the outer side of the first sliding rod. Through the first sliding rod, the second shell can be conveniently slidably connected to the inner side of the first shell.

[0012] Furthermore, a second screw sleeve is fixedly installed on the inner side of the mounting block, and the mounting block is threadedly connected to the outer side of the second screw rod through the second screw sleeve. The second screw sleeve can facilitate the threaded connection of the mounting block to the inner side of the second housing.

[0013] Furthermore, a second slide bar is symmetrically fixedly mounted on the inner side of the second housing, and the mounting block is slidably connected to the outer side of the second slide bar. The second slide bar facilitates the mounting block to be slidably connected to the inner side of the second housing.

[0014] Furthermore, a support plate is fixedly installed on the inner side of the bottom shell, one end of the rotating rod is rotatably connected to the inner side of the support plate, and one end of the rotating rod passes through the support plate and the second bevel gear and is fixedly installed. Through the support plate, the rotating rod can be conveniently supported on the inner side of the bottom shell.

[0015] Furthermore, the back of the sensor body is fixedly connected to a limiting block, and the sensor body is plugged in through the limiting block and the limiting slot. The back of the sensor body is symmetrically provided with card slots, and the card-in end of the card block is card-engaged with the card slot. The limiting block can facilitate the plugging of the sensor body and the limiting slot, and the card slot can facilitate the card block to be carded and fixed to the sensor body.

[0016] Furthermore, a heat dissipation groove is provided on the outer side of the magnetic sheet of the heat dissipation fin, and the groove shape of the heat dissipation groove is U-shaped. A positioning frame is fixedly installed on the side of the heat dissipation seat close to the heat pipe, and the heat dissipation seat is plugged into one end of the through-hole through the positioning frame. The inner side of the heat dissipation seat is symmetrically provided with mounting holes, and the heat dissipation seat is fixedly installed by screws passing through the mounting holes and the positioning grooves. The heat dissipation groove can increase the heat dissipation surface of the heat dissipation fin and improve the heat dissipation efficiency. The positioning frame and the mounting hole can be used to conveniently install the heat dissipation seat in the positioning groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Firstly, in the present invention, when the sensor body needs to be adjusted according to the position of the object to be measured, by rotating the first rotary block, the first rotary block drives the first screw to rotate inside the first housing, and at the same time, the second housing connected to the threaded outer side of the first screw can slide, so that the left and right orientation of the sensor body can be easily adjusted. By rotating the second rotary block, the rotating rod connected to the second rotary block rotates on the bottom housing, and at the same time, the rotating rod drives the second bevel gear to mesh with the first bevel gear, and the second screw connected to the first bevel gear rotates in the second housing, so that the mounting block connected to the threaded outer side of the second screw slides, which can facilitate the adjustment of the sensor body up and down. Therefore, the adjustment function of the sensor body can greatly meet the needs of installation and adjustment for a variety of different detection objects during actual use.

[0019] Secondly, in the present invention, the sensor body is inserted along the limiting groove on one side of the assembly seat. During insertion, the sensor body squeezes the card block extending from the limiting groove, and the same U-shaped plate connected to the card block can slide on the guide rod on the inner side of the mounting groove and squeeze the spring until the sensor body is inserted into the assembly seat and the card slot on the sensor body and the card insertion end of the card block are aligned. Then, the spring elastically resets and pushes the card block connected to the U-shaped plate so that the card insertion end of the card block is inserted into the card slot on the back side of the sensor body to fix it. When disassembling and maintaining the sensor body, no auxiliary tools are needed. It is only necessary to push the U-shaped plate to move in the mounting groove to separate the card block on the U-shaped plate and the card slot on the sensor body. Then, the sensor body can be moved out along the direction of the limiting groove, thereby greatly facilitating the disassembly and assembly of the sensor body.

[0020] Third, in the present invention, when the sensor body is in use, the internal circuit board and electronic components on the sensor body emit heat, the heat is absorbed by the heat pipe on the heat sink, and at the same time the heat is quickly dissipated through the heat sink fins on the other side of the heat sink, thereby greatly reducing the component failure caused by internal heat collection caused by long-term operation of the sensor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the back structure of the sensor body in the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism in the present utility model;

[0024] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the assembly seat structure in the utility model;

[0026] Figure 6 For the utility model Figure 5 Enlarged view of point B in the middle;

[0027] Figure 7 This is a schematic diagram of the installation of the heat sink and sensor body in the present invention;

[0028] Figure 8 This is a schematic structural diagram of the heat sink in the present utility model.

[0029] In the figure: 1. Mounting plate; 2. Adjusting mechanism; 201. First housing; 202. First rotary block; 203. First screw; 204. Second housing; 205. Second screw; 206. Mounting block; 207. Second rotary block; 208. Bottom housing; 209. Rotating rod; 2010. First bevel gear; 2011. Second bevel gear; 3. Assembly seat; 4. Sensor body; 5. Fixing mechanism; 501. Mounting slot; 502. Guide rod; 503, spring; 504, U-shaped plate; 505, clamping block; 6, heat dissipation mechanism; 601, positioning groove; 602, through hole; 603, heat sink; 604, heat fin; 605, heat pipe; 7, clamping slot; 8, first slide bar; 9, first screw sleeve; 10, second screw sleeve; 11, second slide bar; 12, support plate; 13, limiting groove; 14, heat dissipation groove; 15, positioning frame; 16, mounting hole; 17, limiting block. DETAILED DESCRIPTION

[0030] See also Figures 1-8 In the embodiment of the utility model, a U-shaped photoelectric sensor includes a sensor body 4 and a mounting plate 1. An adjustment mechanism 2 is provided on the front of the mounting plate 1. An assembly seat 3 is fixedly installed on the front of the adjustment mechanism 2. A limiting groove 13 is provided on the right side of the assembly seat 3. The assembly seat 3 is plugged into the sensor body 4 through the limiting groove 13. A fixing mechanism 5 is provided on the inner side of the assembly seat 3. The assembly seat 3 is clamped with the sensor body 4 through the fixing mechanism 5. A heat dissipation mechanism 6 is symmetrically provided on the outer side of the sensor body 4. The sensor body 4 also includes internal infrared emitting lamps, infrared receiving lamps, circuit boards and other structural elements, which are existing technology products known on the market, so they will not be described in detail here.

[0031] The adjusting mechanism 2 includes a first housing 201, which is fixedly mounted on the front of the mounting plate 1. A first screw 203 is rotatably connected to the inner side of the first housing 201. One end of the first screw 203 passes through the shell wall of the first housing 201 and is fixedly mounted with a first rotary block 202. The outer side of the first screw 203 is threadedly connected to a second housing 204. The second housing 204 is slidably connected to the inner side of the first housing 201. A bottom housing 208 is fixedly mounted on the lower end of the second housing 204. The inner side of the second housing 204 is rotatably connected to the second screw 20 5. The lower end of the second screw 205 extends into the inner side of the bottom shell 208 and is fixedly installed with the first bevel gear 2010. The inner side of the bottom shell 208 is rotatably connected with a rotating rod 209. One end of the rotating rod 209 is fixedly installed with the second bevel gear 2011. The first bevel gear 2010 and the second bevel gear 2011 are meshed. The end of the rotating rod 209 away from the second bevel gear 2011 passes through the wall of the bottom shell 208 and is fixedly installed with a second rotating block 207. The outer side of the second screw 205 is threadedly connected with a mounting block 206. The mounting block 206 is slidably connected to the second set. The assembly seat 3 is fixed to the inner side of the housing 204 by screws and the mounting block 206. When the sensor body 4 is mounted on the assembly seat 3, when the sensor body 4 needs to be adjusted according to the position of the object to be measured, the first rotary block 202 is rotated so that the first rotary block 202 drives the first screw 203 to rotate inside the first housing 201. At the same time, the second housing 204 threadedly connected to the outer side of the first screw 203 can slide, so that the left and right direction of the sensor body 4 can be adjusted conveniently. By rotating the second rotary block 207, the second rotary block 207 is rotated. The connected rotating rod 209 rotates on the bottom shell 208, and at the same time, the rotating rod 209 drives the second bevel gear 2011 to engage and transmit the first bevel gear 2010, and the second screw 205 connected to the first bevel gear 2010 rotates in the second housing 204, so that the mounting block 206 threadedly connected to the outer side of the second screw 205 slides, which can facilitate the adjustment of the upper and lower positions of the sensor body 4. Therefore, the adjustment function of the sensor body 4 can greatly meet the needs of installation and adjustment for a variety of different detection objects during actual use;

[0032] The fixing mechanism 5 includes a mounting groove 501, which is symmetrically arranged on the side of the assembly seat 3 away from the limiting groove 13. A guide rod 502 is symmetrically fixedly installed on the inner side of the mounting groove 501, and the outer side of the guide rod 502 is slidably connected to the same U-shaped plate 504. A spring 503 is provided on the outer side of the guide rod 502, and a clamping block 505 is fixedly installed on the side of the U-shaped plate 504 away from the spring 503. The snap-in end of the clamping block 505 is movable and penetrates into the inner side of the limiting groove 13, and the snap-in end of the clamping block 505 is snap-fitted to the back side of the sensor body 4. When installing the sensor body 4, it is only necessary to insert the sensor body 4 along the limiting groove 13 on one side of the assembly seat 3. During insertion, the sensor body 4 squeezes the clamping block 505 extending out of the limiting groove 13, and the same U-shaped plate 504 connected to the clamping block 505 can slide on the guide rod 502 inside the mounting groove 501. The spring 503 is squeezed until the sensor body 4 is inserted into the assembly seat 3 and the position of the card slot 7 on the sensor body 4 and the card-in end position of the card block 505 are aligned, the spring 503 elastically resets and pushes the card block 505 connected to the U-shaped plate 504, so that the card-in end of the card block 505 is carded into the card slot 7 on the back of the sensor body 4 to fix it. When disassembling and maintaining the sensor body 4, there is no need to use any auxiliary tools, just need to push the U-shaped plate 504 to move at the installation slot 501, so that the card block 505 on the U-shaped plate 504 and the card slot 7 on the sensor body 4 are separated, and then the sensor body 4 is moved out along the direction of the notch of the limit slot 13, thereby greatly facilitating the disassembly and assembly of the sensor body 4; four guide rods 502 are provided on the inner side of each installation slot 501, which can ensure the stability of the use of the U-shaped plate 504;

[0033] 602 and the like.

[0034] See also Figure 2The first screw sleeve 9 is fixedly installed on the inner side of the second shell 204, and the second shell 204 is threadedly connected to the outside of the first screw 203 through the first screw sleeve 9. The first slide rod 8 is symmetrically fixedly installed on the inner side of the first shell 201, and the second shell 204 is slidably connected to the outside of the first slide rod 8. The second shell 204 with the first screw sleeve 9 and the first screw 203 are threadedly connected, so that the second shell 204 can slide on the first slide rod 8 inside the first shell 201.

[0035] See also Figure 3 A second screw sleeve 10 is fixedly installed on the inner side of the mounting block 206, and the mounting block 206 is threadedly connected to the outside of the second screw rod 205 through the second screw sleeve 10. A second slide rod 11 is symmetrically fixedly installed on the inner side of the second shell 204, and the mounting block 206 is slidably connected to the outside of the second slide rod 11. The mounting block 206 with the second screw sleeve 10 is threadedly connected to the second screw rod 205 in the second shell 204, so that the mounting block 206 can slide inside the second shell 204.

[0036] See also Figure 4 A support plate 12 is fixedly installed on the inner side of the bottom shell 208, one end of the rotating rod 209 is rotatably connected to the inner side of the support plate 12, one end of the rotating rod 209 passes through the support plate 12 and is fixedly installed on the second bevel gear 2011, and the support plate 12 on the inner side of the bottom shell 208 can facilitate the rotation of the other end of the rotating rod 209 on the inner side of the bottom shell 208.

[0037] See also Figure 2 and Figure 5 The back of the sensor body 4 is fixedly connected to the limiting block 17, and the sensor body 4 is plugged into the limiting groove 13 through the limiting block 17. The back of the sensor body 4 is symmetrically provided with a card slot 7, and the card-in end of the card block 505 is carded into the card slot 7. The limiting block 17 on the back of the sensor body 4 can facilitate the limited plugging of the back of the sensor body 4 and the limiting groove 13 on the assembly seat 3, and the card slot 7 on the back of the sensor body 4 can be conveniently carded and fixed with the card-in end of the card block 505 in the limiting groove 13.

[0038] See also Figure 7 and Figure 8A heat dissipation groove 14 is provided on the outside of the magnetic sheet of the heat dissipation fin 604, and the groove shape of the heat dissipation groove 14 is U-shaped. A positioning frame 15 is fixedly installed on the side of the heat dissipation seat 603 close to the heat pipe 605. The heat dissipation seat 603 is plugged into one end of the hole 602 through the positioning frame 15. The inner side of the heat dissipation seat 603 is symmetrically provided with mounting holes 16. The heat dissipation seat 603 is fixedly installed by screws passing through the mounting holes 16 and the positioning groove 601. The heat dissipation groove 14 on the heat dissipation fin 604 can be used to expand the heat dissipation area of ​​the heat dissipation fin 604 and improve its heat dissipation effect. When installing the heat dissipation seat 603, it only needs to be inserted into the through hole 602 through the positioning frame 15, and then fixed in the positioning groove 601 by screws passing through the mounting hole 16 of the heat dissipation seat 603.

[0039] The working principle of the present invention is as follows: during use, when the sensor body 4 is mounted on the assembly seat 3, when the sensor body 4 needs to be adjusted according to the position of the object to be measured, by rotating the first rotary block 202, the first rotary block 202 drives the first screw rod 203 to rotate inside the first housing 201, and at the same time, the second housing 204 threadedly connected to the outer side of the first screw rod 203 can slide, so that the sensor body 4 can be conveniently adjusted to the left and right directions. By rotating the second rotary block 207, the rotating rod 209 connected to the second rotary block 207 rotates on the bottom housing 208, and at the same time, the rotating rod 209 drives the second bevel gear 2011 to mesh with the first bevel gear 2010, and the second screw rod 205 connected to the first bevel gear 2010 rotates in the second housing 204, so that the mounting block 206 threadedly connected to the outer side of the second screw rod 205 slides, which can facilitate the adjustment of the sensor body 4 up and down.

[0040] When the sensor body 4 is installed, it is only necessary to insert the sensor body 4 into the limit groove 13 on one side of the assembly seat 3. During the insertion, the sensor body 4 squeezes the block 505 extending out of the limit groove 13, and the same U-shaped plate 504 connected to the block 505 can slide on the guide rod 502 inside the installation groove 501 and squeeze the spring 503 until the sensor body 4 is inserted into the assembly seat 3 and the position of the card slot 7 on the sensor body 4 and the card insertion end of the block 505 corresponds to each other. The spring 503 elastically resets and pushes the block 505 connected to the U-shaped plate 504 so that the card insertion end of the block 505 is carded into the card slot 7 on the back side of the sensor body 4 to fix it. When the sensor body 4 is disassembled and maintained, there is no need to use any auxiliary tools. It is only necessary to push the U-shaped plate 504 to move at the installation groove 501 to separate the block 505 on the U-shaped plate 504 and the card slot 7 on the sensor body 4, and then the sensor body 4 is moved out along the direction of the notch of the limit groove 13.

[0041] When the sensor body 4 is in use, the internal circuit board and electronic components of the sensor body 4 emit heat, which is absorbed by the heat pipe 605 on the heat sink 603 and quickly dissipated through the heat sink fins 604 on the other side of the heat sink 603.

Claims

1. A U-shaped photoelectric sensor, characterized in that: The sensor comprises a sensor body and a mounting plate, wherein an adjustment mechanism is provided on the front of the mounting plate, an assembly seat is fixedly installed on the front of the adjustment mechanism, a limiting groove is provided on the right side of the assembly seat, and the assembly seat is plugged into the sensor body through the limiting groove, a fixing mechanism is provided on the inner side of the assembly seat, and the assembly seat is clamped with the sensor body through the fixing mechanism, and a heat dissipation mechanism is symmetrically provided on the outer side of the sensor body; The first gear is fixedly mounted on the front of the drive gear, and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear is engaged with the first gear and the second gear. The fixing mechanism includes a mounting groove, which is symmetrically opened on a side of the assembly seat away from the limiting groove. A guide rod is symmetrically fixedly installed on the inner side of the mounting groove. The outer side of the guide rod is slidably connected to the same U-shaped plate. A spring is sleeved on the outer side of the guide rod. A clamping block is fixedly installed on the side of the U-shaped plate away from the spring. The clamping end of the clamping block moves deep into the inner side of the limiting groove, and the clamping end of the clamping block is clamped with the back side of the sensor body.

2. A U-shaped photoelectric sensor according to claim 1, characterized in that: A first screw sleeve is fixedly installed on the inner side of the second housing, and the second housing is threadedly connected to the outer side of the first screw rod through the first screw sleeve.

3. The U-shaped photoelectric sensor according to claim 1, characterized in that: A first sliding rod is symmetrically fixedly mounted on the inner side of the first housing, and the second housing is slidably connected to the outer side of the first sliding rod.

4. A U-shaped photoelectric sensor according to claim 1, characterized in that: A second screw sleeve is fixedly mounted on the inner side of the mounting block, and the mounting block is threadedly connected to the outer side of the second screw rod through the second screw sleeve.

5. The U-shaped photoelectric sensor according to claim 1, characterized in that: A second sliding rod is symmetrically fixedly mounted on the inner side of the second housing, and the mounting block is slidably connected to the outer side of the second sliding rod.

6. The U-shaped photoelectric sensor according to claim 1, characterized in that: A support plate is fixedly installed on the inner side of the bottom shell, one end of the rotating rod is rotatably connected to the inner side of the support plate, and one end of the rotating rod passes through the support plate and is fixedly installed on the second bevel gear.

7. The U-shaped photoelectric sensor according to claim 1, characterized in that: The back of the sensor body is fixedly connected to a limiting block, the sensor body is plugged into the limiting block and the limiting slot, and the back of the sensor body is symmetrically provided with card slots, and the card-in end of the card block is card-engaged with the card slot.

8. The U-shaped photoelectric sensor according to claim 1, characterized in that: The heat dissipation mechanism includes a positioning groove and a heat dissipation seat. The positioning groove is symmetrically opened on the outside of the sensor body. A through hole is opened on the inside of the positioning groove. The through hole and the interior of the sensor body are connected to each other. The heat dissipation seat is fixedly installed on the inside of the positioning groove by screws. A heat dissipation fin is fixedly connected to one side of the heat dissipation seat. A heat pipe is fixedly installed on the other side of the heat dissipation seat away from the heat dissipation fin. The heat pipe part of the heat dissipation seat extends into the inside of the through hole.

9. The U-shaped photoelectric sensor according to claim 8, characterized in that: A heat dissipation groove is provided on the outer side of the magnetic sheet of the heat dissipation fin, and the groove shape of the heat dissipation groove is U-shaped. A positioning frame is fixedly installed on the side of the heat dissipation seat close to the heat pipe. The heat dissipation seat is plugged into one end of the through-hole through the positioning frame. Mounting holes are symmetrically provided on the inner side of the heat dissipation seat, and the heat dissipation seat is fixedly installed by screws passing through the mounting holes and the positioning grooves.

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