Infrared detector with fixing structure

Abstract

The utility model provides an infrared detector with a fixing structure. Relates to the technical field of infrared detectors. The infrared detector with the fixing structure comprises an infrared detector body, an insertion block, a mounting base and a locking assembly, the mounting base is located on the rear side of the infrared detector body, an insertion groove is formed in the front side wall of the mounting base, the insertion block is fixedly mounted on the outer wall of the rear side of the infrared detector body, the rear end of the insertion block is slidably mounted in the insertion groove, and the locking assembly is located in the insertion groove. The locking assembly is arranged on the mounting base and used for clamping and fixing the inserting block into the inserting groove, and a position adjusting assembly is arranged behind the mounting base. The infrared detector with the fixing structure provided by the utility model has the advantages that the direction of the installed and fixed infrared detector main body can be conveniently adjusted, the inclination angle of the installed and fixed infrared detector main body can also be conveniently adjusted, the flexible performance of the device is improved, and the detection range is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of infrared detectors, in particular to an infrared detector with a fixing structure. Background Art

[0002] An infrared detector is a device that converts an incident infrared radiation signal into an electrical signal output. Currently, most installations of infrared detectors are directly fixed to the wall panel by bolts. When it is necessary to disassemble the infrared detector body later, the operation is cumbersome and complex, increasing the difficulty of later maintenance.

[0003] In view of the above problems, a Chinese patent with the publication number CN220063189U discloses an infrared detector with an outer fixing structure. Its technical key points include an infrared detector main body, an insertion block, and a clamping frame. One end of the insertion block is provided with a connection component for connecting the infrared detector main body and the insertion block. The other end of the insertion block is movably inserted into the interior of the clamping frame, and two sides of the insertion block are respectively provided with clamping grooves. Two U-shaped frames are adhesively bonded to both sides of the clamping frame. One side of each of the two U-shaped frames is movably penetrated by an insertion post. One end of each of the two insertion posts respectively movably penetrates through the middle parts of both sides of the clamping frame, and one end of each of the two insertion posts is respectively snap-connected to the interiors of the two clamping grooves. In this solution, by inserting the insertion block into the clamping frame, two springs expand and abut against two loop-shaped blocks to drive the two insertion posts to approach each other, so that one end of each of the two insertion posts is respectively snap-connected to the interiors of the two clamping grooves, thereby fixing the insertion block and indirectly fixing the infrared detector main body.

[0004] The above solution is found to still have at least the following defects in actual use: after the infrared detector main body is installed and fixed, it is not convenient to adjust the orientation and tilt angle of the infrared detector main body according to requirements, resulting in a certain limitation in the detection range of the infrared detector main body, making it have certain limitations.

[0005] Therefore, it is necessary to provide a new infrared detector with a fixing structure to solve the above technical problems. Summary of the Utility Model

[0006] The technical problem solved by the utility model is to provide an infrared detector with a fixing structure that can quickly replace taps of different models and improve the tapping efficiency.

[0007] In order to solve the above technical problems, the infrared detector with a fixed structure provided by the utility model includes: an infrared detector body, an insert block, a mounting seat and a locking assembly, the mounting seat is located on the rear side of the infrared detector body, a slot is opened on the front side wall of the mounting seat, the insert block is fixedly installed on the rear outer wall of the infrared detector body, the rear end of the insert block is slidably installed in the slot, the locking assembly is arranged on the mounting seat, the locking assembly is used to clamp and fix the insert block in the slot, a position adjustment assembly is arranged at the rear of the mounting seat, an angle adjustment assembly is arranged on the position adjustment assembly, the mounting seat is arranged on the angle adjustment assembly, the angle adjustment assembly is used to adjust the inclination angle of the infrared detector body, and the position adjustment assembly is used to adjust the orientation of the infrared detector body.

[0008] Preferably, the locking assembly includes two clamping rods, two pull handles and two springs. The top and bottom of the plug block are provided with clamping slots, and the top inner wall and bottom inner wall of the slot are provided with sliding holes. The ends of the two clamping rods close to each other slide through the corresponding sliding holes and are slidably installed in the corresponding clamping slots. The two pull handles are fixedly installed at the ends of the two clamping rods away from each other. The ends of the two springs close to each other are fixedly connected to the top and bottom of the mounting seat respectively. The ends of the two springs away from each other are fixedly connected to the corresponding pull handles respectively, and the two springs are respectively sleeved on the corresponding clamping rods.

[0009] Preferably, the position adjustment assembly includes a cross beam, an axle seat, a first screw rod, a second screw rod, two slide seats, a first knob, two connecting rods and a support seat, the cross beam is located behind the mounting seat, a transverse slide groove is opened on the front side of the cross beam, the axle seat is fixedly mounted on the left inner wall of the transverse slide groove, the left end of the first screw rod is rotatably connected to the axle seat, the left end of the second screw rod is fixedly connected to the right end of the first screw rod, the threads of the first screw rod and the second screw rod are arranged in opposite directions, the two slide seats are respectively threadedly sleeved on the first screw rod and the second screw rod, the front sides of the two slide seats extend outside the transverse slide groove, the right end of the second screw rod extends outside the cross beam, the first knob is fixedly mounted on the right end of the second screw rod, one end of the two connecting rods are rotatably connected to the top front side of the corresponding slide seat through a pin shaft, the two connecting rods are both inclined, and the two sides of the support seat are rotatably connected to the other end of the two connecting rods through a pin shaft.

[0010] Preferably, a transverse guide rod is fixedly installed in the transverse slide groove, and the two slide seats are slidably sleeved on the transverse guide rod.

[0011] Preferably, a positioning plate is fixedly mounted on the rear side wall of the cross beam, and four bolt holes symmetrically distributed in pairs are formed on the positioning plate, and bolts are threadedly mounted in the four bolt holes.

[0012] Preferably, the angle adjustment assembly includes a rotating shaft, gear one and gear two, a groove is opened on the front side wall of the support seat, the rotating shaft is rotatably installed in the groove, gear one is fixedly sleeved on the rotating shaft, the front end of the rotating shaft extends out of the groove, the rear side wall of the mounting seat is fixedly connected with the front end of the rotating shaft, gear two is rotatably installed in the groove through an axle rod and is located above gear one, gear two is meshed with gear one, an avoidance hole is opened on the top inner wall of the groove, and the top of gear two passes through the avoidance hole.

[0013] Preferably, the angle adjustment assembly also includes a fixed plate, a threaded rod, an anti-slip resistance block and a second knob. The fixed plate is fixedly mounted on the top of the support seat and is located behind the avoidance hole. The threaded rod is threadedly mounted on the fixed plate. The anti-slip resistance block is fixedly mounted on the front end of the threaded rod. The front side wall of the anti-slip resistance block is in contact with the rear side wall of gear two. The second knob is fixedly mounted on the rear end of the threaded rod.

[0014] Preferably, the front side wall of the anti-slip resistance block is a frosted surface structure.

[0015] Compared with the related art, the infrared detector with a fixed structure provided by the utility model has the following beneficial effects:

[0016] The utility model provides an infrared detector with a fixed structure. By utilizing a locking component, the infrared detector body can be quickly disassembled and assembled. After the infrared detector body is installed and fixed, the position of the installed and fixed infrared detector body can be adjusted by utilizing a position adjustment component. By utilizing an angle adjustment component, the inclination angle of the installed and fixed infrared detector body can be adjusted, thereby improving the flexibility of the device and expanding the detection range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 4 It is a partial top view and cross-sectional structure schematic diagram of the position adjustment component in the utility model;

[0021] Figure 5 This is a schematic diagram of the assembly of the support seat and the angle adjustment component in the utility model;

[0022] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A;

[0023] Figure 7 It is a front view and cross-sectional structure schematic diagram of the locking assembly in the present utility model.

[0024] Numbers in the figure: 1. Positioning plate; 2. Crossbeam; 3. Horizontal slide groove; 4. Shaft seat; 5. First screw rod; 6. Second screw rod; 7. Slide seat; 8. First knob; 9. Connecting rod; 10. Support seat; 11. Groove; 12. Rotating shaft; 13. Gear one; 14. Gear two; 15. Avoidance hole; 16. Fixing plate; 17. Threaded rod; 18. Anti-skid resistance block; 19. Second knob; 20. Mounting seat; 21. Slot; 22. Infrared detector body; 23. Insert block; 24. Slot; 25. Slide hole; 26. Clamp rod; 27. Pull handle; 28. Spring; 29. ​​Horizontal guide rod. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0026] Please refer to Figure 1-Figure 7 ,in, Figure 1 This is a front view structural schematic diagram of the utility model; Figure 2 It is a left-side structural schematic diagram of the utility model; Figure 3 It is a schematic diagram of the top view structure of the utility model; Figure 4 It is a partial top view and cross-sectional structure schematic diagram of the position adjustment component in the utility model; Figure 5 This is a schematic diagram of the assembly of the support seat and the angle adjustment component in the utility model;

[0027] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A; Figure 7The figure is a schematic diagram of the front cross-sectional structure of the locking assembly in the utility model. An infrared detector with a fixed structure includes: an infrared detector body 22, an insert block 23, a mounting seat 20 and a locking assembly. The mounting seat 20 is located at the rear side of the infrared detector body 22. A slot 21 is provided on the front side wall of the mounting seat 20. The insert block 23 is fixedly installed on the rear outer wall of the infrared detector body 22. The rear end of the insert block 23 is slidably installed in the slot 21. The locking assembly is arranged on the mounting seat 20. The locking assembly is used to clamp and fix the insert block 23 in the slot 21. The locking assembly includes two clamping rods 26, two pull handles 27 and two springs 28. The top and bottom of the insert block 23 are provided with a clamping groove 24. The top inner wall and the bottom inner wall of the slot 21 are provided with a sliding hole 25. The ends of the two clamping rods 26 that are close to each other slide through the corresponding sliding holes 25 and slide respectively. Installed in the corresponding card slots 24, the two pull handles 27 are respectively fixedly installed at the ends of the two card rods 26 that are away from each other, and the ends of the two springs 28 that are close to each other are respectively fixedly connected to the top and bottom of the mounting seat 20, and the ends of the two springs 28 that are away from each other are respectively fixedly connected to the corresponding pull handles 27, and the two springs 28 are respectively sleeved on the corresponding card rods 26. By using the sliding plug-in cooperation between the two card rods 26 and the corresponding card slots 24, the plug block 23 can be fixed in the slot 21, and the infrared detector body 22 can be installed and fixed on the mounting seat 20. The two pull handles 27 are used to facilitate the lifting of the card rod 26. The elastic force of the two springs 28 can control the corresponding card rod 26 to automatically reset, thereby achieving the effect of convenient and quick disassembly and assembly of the infrared detector body 22, wherein:

[0028] A position adjustment component is arranged at the rear of the mounting seat 20 , an angle adjustment component is arranged on the position adjustment component, the mounting seat 20 is arranged on the angle adjustment component, the angle adjustment component is used to adjust the tilt angle of the infrared detector body 22 , and the position adjustment component is used to adjust the orientation of the infrared detector body 22 .

[0029] In this embodiment, the above-mentioned position adjustment component includes a crossbeam 2, an axle seat 4, a first screw rod 5, a second screw rod 6, two slide seats 7, a first knob 8, two connecting rods 9 and a support seat 10. The crossbeam 2 is located behind the mounting seat 20. A transverse slide groove 3 is provided on the front side of the crossbeam 2. The axle seat 4 is fixedly installed on the left inner wall of the transverse slide groove 3. The left end of the first screw rod 5 is rotatably connected to the axle seat 4, and the left end of the second screw rod 6 is fixedly connected to the right end of the first screw rod 5. The thread rotation directions of the first screw rod 5 and the second screw rod 6 are set in opposite directions. The two slide seats 7 are respectively threadedly sleeved on the first screw rod 5 and the second screw rod 6. The front sides of the two slide seats 7 extend to the outside of the transverse slide groove 3, and the right end of the second screw rod 6 extends to the outside of the transverse slide groove 3. Extending outside the crossbeam 2, the first knob 8 is fixedly installed on the right end of the second screw rod 6, one end of the two connecting rods 9 is rotatably connected to the top front side of the corresponding slide 7 through a pin shaft, and the two connecting rods 9 are both inclined. The two sides of the support seat 10 are rotatably connected to the other ends of the two connecting rods 9 through a pin shaft. The setting of the first knob 8 facilitates the synchronous rotation of the first screw rod 5 and the second screw rod 6. By setting the thread rotation directions of the first screw rod 5 and the second screw rod 6 to be opposite, when the first screw rod 5 and the second screw rod 6 rotate synchronously, the two slides 7 can be controlled to slide in the direction of approaching or moving away from each other, and then the two connecting rods 9 can push the support seat 10 to move horizontally forward or backward.

[0030] In this embodiment, the angle adjustment assembly includes a rotating shaft 12, a gear 13, a gear 2 14, a fixing plate 16, a threaded rod 17, an anti-slip block 18 and a second knob 19. A groove 11 is provided on the front side wall of the support seat. The rotating shaft 12 is rotatably installed in the groove 11. The gear 1 13 is fixedly sleeved on the rotating shaft 12. The front end of the rotating shaft 12 extends out of the groove 11. The rear side wall of the mounting seat 20 is fixedly connected with the front end of the rotating shaft 12. The gear 2 14 is rotatably installed in the groove 11 through the shaft rod and is located above the gear 1 13. The gear 2 14 meshes with the gear 1 13. An avoidance hole 15 is provided on the top inner wall of the groove 11. The top of the gear 2 14 passes through the avoidance hole 15. By utilizing the meshing transmission effect of the gear 2 14 and the gear 1 13, the gear 2 14 can be waved by the finger to control the gear 1 13 to drive the rotating shaft 12 to rotate, so that the rotating shaft 12 drives the mounting seat 2 0 and the rotation of the infrared detector body 22 is fixed and installed, so that the inclination angle of the infrared detector body 22 can be conveniently adjusted. The fixing plate 16 is fixedly installed on the top of the support seat 10 and is located behind the avoidance hole 15. The threaded rod 17 is threadedly installed on the fixing plate 16. The anti-skid resistance block 18 is fixedly installed at the front end of the threaded rod 17. The front side wall of the anti-skid resistance block 18 is in conflict with the rear side wall of the gear 2 14. The second knob 19 is fixedly installed at the rear end of the threaded rod 17. The second knob 19 is used to conveniently rotate the threaded rod 17 and the anti-skid resistance block 18, so that the position of the anti-skid resistance block 18 can be adjusted. The friction resistance generated by the friction between the anti-skid resistance block 18 and the rear side wall of the gear 2 14 can limit the autonomous rotation of the gear 2 14, so that after the inclination angle of the infrared detector body 22 is appropriately adjusted, the infrared detector body 22 can be prevented from autonomously deviating.

[0031] In this embodiment, in order to ensure that the two slides 7 can slide smoothly and steadily in a straight line in the transverse slide groove 3 , a transverse guide rod 29 is fixedly installed in the transverse slide groove 3 , and the two slides 7 are slidably sleeved on the transverse guide rod 29 .

[0032] In this embodiment, in order to facilitate the fixation of the beam 2, a positioning plate 1 is fixedly installed on the rear side wall of the beam 2. The positioning plate 1 is provided with four bolt holes that are symmetrically distributed in pairs. Bolts are threadedly installed in the four bolt holes. The positioning plate 1 can be fixed at a suitable position on the wall by the four bolts. After the positioning plate 1 is installed and fixed, there is no need to disassemble the positioning plate 1.

[0033] In this embodiment, in order to increase the friction resistance when contacting the second gear 14 and improve the limiting effect on the second gear 14 , the front side wall of the anti-slip contact block 18 is a frosted surface structure.

[0034] The working principle of the infrared detector with a fixed structure provided by the utility model is as follows:

[0035] Use four bolts to fix the positioning plate 1 at a suitable position on the wall. There is no need to remove the positioning plate 1 later.

[0036] When installing and fixing the infrared detector body 22, first pull the two handles 27 to move away from each other, which can drive the two clamping rods 26 to slide in the direction away from each other. At this time, the two springs 28 are stretched and deformed to generate elastic force. When the ends of the two clamping rods 26 close to each other are pulled out of the slots 21, the positions of the two handles 27 are kept fixed, and then the plug block 23 on the rear side of the infrared detector body 22 is tightly inserted into the slots 21, and then the two handles 27 are released. Under the elastic force of the two springs 28, the two clamping rods 26 can be controlled to automatically reset, so that the two clamping rods 26 are respectively inserted into the corresponding slots 24, that is, the rapid installation and fixation of the infrared detector body 22 is completed, and then the power cord of the infrared detector body 22 is connected, and the infrared detector body 22 can be turned on for use;

[0037] During use, when the orientation of the infrared detector body 22 needs to be adjusted, the first knob 8 is rotated clockwise, and the first knob 8 drives the second screw rod 6 and the first screw rod 5 to rotate synchronously, so that the two slides 7 slide in the direction of approaching each other, and the two slides 7 push the support seat 10, the angle adjustment assembly, the mounting seat 20 and the installed and fixed infrared detector body 22 to move forward. Similarly, by rotating the first knob 8 counterclockwise, the first knob 8 drives the second screw rod 6 and the first screw rod 5 to rotate synchronously, so that the two slides 7 slide in the direction of moving away from each other, and the two slides 7 push the support seat 10, the angle adjustment assembly, the mounting seat 20 and the installed and fixed infrared detector body 22 to move backward through the two connecting rods 9, thereby facilitating the adjustment of the orientation of the installed and fixed infrared detector body 22;

[0038] During the period, when it is necessary to adjust the inclination angle of the infrared detector body 22, first turn the second knob 19 counterclockwise, the second knob 19 drives the threaded rod 17 and the anti-skid resistance block 18 to rotate counterclockwise and gradually move away from the gear 2 14, that is, the fixation of the gear 2 14 is released, and the gear 2 14 is rotated by using a finger, and the gear 2 14 drives the gear 1 13, the rotating shaft 12, the mounting seat 20 and the fixed infrared detector body 22 to rotate, so that the inclination angle of the infrared detector body 22 can be changed. After the inclination angle of the infrared detector body 22 is adjusted appropriately, the second knob 19 is turned clockwise again, the second knob 19 drives the threaded rod 17 and the anti-skid resistance block 18 to rotate counterclockwise and gradually approach the gear 2 14, so that the anti-skid resistance block 18 is tightly in contact with the rear side wall of the gear 2 14, that is, the rotation of the gear 2 14 is completed, and the infrared detector body 22 with the adjusted inclination angle can be prevented from self-deflection, thereby realizing the convenience of adjusting the inclination angle of the fixed infrared detector body 22;

[0039] When the infrared detector body 22 needs to be disassembled for maintenance later, the power cord on the infrared detector body 22 is disassembled, and the two handles 27 are pulled away from each other so that the ends of the two clamping rods 26 that are close to each other slide out of the corresponding clamping slots 24, and the infrared detector body 22 can be removed.

[0040] Compared with the related art, the infrared detector with a fixed structure provided by the utility model has the following beneficial effects:

[0041] The utility model provides an infrared detector with a fixed structure. By utilizing a locking component, the infrared detector body 22 can be quickly disassembled and assembled. After the infrared detector body 22 is installed and fixed, the position of the installed and fixed infrared detector body 22 can be adjusted by utilizing a position adjustment component. By utilizing an angle adjustment component, the inclination angle of the installed and fixed infrared detector body 22 can be adjusted, thereby improving the flexibility of the device and expanding the detection range.

[0042] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An infrared detector with a fixed structure, comprising an infrared detector body (22), an insert (23), a mounting seat (20) and a locking assembly, characterized in that: The mounting seat (20) is located at the rear side of the infrared detector body (22); a slot (21) is provided on the front side wall of the mounting seat (20); the plug block (23) is fixedly mounted on the rear outer wall of the infrared detector body (22); the rear end of the plug block (23) is slidably mounted in the slot (21); the locking assembly is arranged on the mounting seat (20); the locking assembly is used to clamp and fix the plug block (23) in the slot (21); a position adjustment assembly is arranged at the rear of the mounting seat (20); an angle adjustment assembly is arranged on the position adjustment assembly; the mounting seat (20) is arranged on the angle adjustment assembly; the angle adjustment assembly is used to adjust the inclination angle of the infrared detector body (22); and the position adjustment assembly is used to adjust the orientation of the infrared detector body (22).

2. The infrared detector with a fixed structure according to claim 1, characterized in that: The locking assembly comprises two clamping rods (26), two pull handles (27) and two springs (28). The top and bottom of the insert block (23) are provided with clamping grooves (24). The top inner wall and the bottom inner wall of the slot (21) are provided with sliding holes (25). The ends of the two clamping rods (26) close to each other slide through the corresponding sliding holes (25) and are slidably installed in the corresponding clamping grooves (24). The two pull handles (27) are fixedly installed at the ends of the two clamping rods (26) away from each other. The ends of the two springs (28) close to each other are fixedly connected to the top and bottom of the mounting seat (20). The ends of the two springs (28) away from each other are fixedly connected to the corresponding pull handles (27), and the two springs (28) are respectively sleeved on the corresponding clamping rods (26).

3. The infrared detector with a fixed structure according to claim 1, characterized in that: The position adjustment assembly comprises a crossbeam (2), an axle seat (4), a first screw rod (5), a second screw rod (6), two slide seats (7), a first knob (8), two connecting rods (9) and a support seat (10); the crossbeam (2) is located behind the mounting seat (20); a transverse slide groove (3) is provided on the front side of the crossbeam (2); the axle seat (4) is fixedly mounted on the left inner wall of the transverse slide groove (3); the left end of the first screw rod (5) is rotatably connected to the axle seat (4); the left end of the second screw rod (6) is fixedly connected to the right end of the first screw rod (5); the first screw rod (5) and the second screw rod (6) are The threads are arranged in opposite directions, the two slide seats (7) are respectively threadedly sleeved on the first screw rod (5) and the second screw rod (6), the front sides of the two slide seats (7) extend to the outside of the transverse slide groove (3), the right end of the second screw rod (6) extends to the outside of the crossbeam (2), the first knob (8) is fixedly installed on the right end of the second screw rod (6), one end of the two connecting rods (9) are respectively rotatably connected to the top front side of the corresponding slide seat (7) through a pin shaft, the two connecting rods (9) are both inclined, and the two sides of the support seat (10) are respectively rotatably connected to the other end of the two connecting rods (9) through a pin shaft.

4. The infrared detector with a fixed structure according to claim 3, characterized in that: A transverse guide rod (29) is fixedly installed in the transverse slide groove (3), and the two slide seats (7) are both slidably sleeved on the transverse guide rod (29).

5. The infrared detector with a fixed structure according to claim 3, characterized in that: A positioning plate (1) is fixedly mounted on the rear side wall of the crossbeam (2), and the positioning plate (1) is provided with four bolt holes which are symmetrically distributed in pairs, and bolts are threadedly mounted in the four bolt holes.

6. The infrared detector with a fixed structure according to claim 3, characterized in that: The angle adjustment assembly comprises a rotating shaft (12), a gear 1 (13) and a gear 2 (14); a groove (11) is provided on the front side wall of the support seat; the rotating shaft (12) is rotatably mounted in the groove (11); the gear 1 (13) is fixedly sleeved on the rotating shaft (12); the front end of the rotating shaft (12) extends outside the groove (11); the rear side wall of the mounting seat (20) is fixedly connected to the front end of the rotating shaft (12); the gear 2 (14) is rotatably mounted in the groove (11) through a shaft and is located above the gear 1 (13); the gear 2 (14) is meshed with the gear 1 (13); a avoidance hole (15) is provided on the top inner wall of the groove (11); the top of the gear 2 (14) passes through the avoidance hole (15).

7. The infrared detector with a fixed structure according to claim 6, characterized in that: The angle adjustment assembly further comprises a fixing plate (16), a threaded rod (17), an anti-slipping block (18) and a second knob (19); the fixing plate (16) is fixedly mounted on the top of the support seat (10) and is located behind the avoidance hole (15); the threaded rod (17) is threadedly mounted on the fixing plate (16); the anti-slipping block (18) is fixedly mounted on the front end of the threaded rod (17); the front side wall of the anti-slipping block (18) abuts against the rear side wall of the gear 2 (14); and the second knob (19) is fixedly mounted on the rear end of the threaded rod (17).

8. The infrared detector with a fixed structure according to claim 7, characterized in that: The front side wall of the anti-slip resistance block (18) is a frosted surface structure.

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