A protective device for proximity switch operation

Abstract

The present invention relates to the technical field of proximity switches, and specifically to a protective device for proximity switch operation, comprising a fixed housing, a sliding box, a proximity switch body, a plug connector, a circuit protector, a wiring board, an external wire, a controller, a movable box, a transmission box, an anti-collision mechanism, a retraction mechanism, and a reset mechanism. The present invention realizes anti-collision of the fixed housing through the anti-collision mechanism, so that some devices can avoid direct frontal impact of the fixed housing through the anti-collision plate, realizes retraction of the proximity switch body through the retraction mechanism, and facilitates comprehensive protection of the proximity switch body, realizes resetting of the proximity switch body through the reset mechanism, so that some devices can automatically reset after starting the retraction mechanism, and the proximity switch body and the plug connector can be detached and plugged into the wiring board through the separate wiring assembly of the proximity switch body, thereby improving the protection, stability and convenience of the device.

Description

Technical Field

[0001] The invention relates to the technical field of proximity switches, in particular to a protection device for proximity switch operation. Background Art

[0002] A proximity switch is a position sensor that can be operated without mechanical contact with moving parts. It is generally used in the motion positioning control of automatic machinery. When an object reaches the sensing point of the proximity switch, the switch can be activated without mechanical contact or any pressure, thereby driving DC appliances or providing control instructions to computer devices. Proximity switches can be divided into inductive proximity switches, capacitive proximity switches and photoelectric proximity switches based on their working principles. These proximity switches with working principles are widely used in many fields such as industrial automation, logistics transportation, and smart homes.

[0003] Proximity switches may be subject to mechanical shock or collision in some application scenarios. For example, in an environment where logistics conveying equipment moves frequently, the proximity switch may be accidentally hit by the conveyed goods; during the installation and commissioning of automation equipment, the proximity switch may also be subjected to external force shock due to improper operation, resulting in problems such as damage to internal components or loose connections.

[0004] The existing device mainly protects the proximity switch by a protective shell. The existing technology is similar to a proximity switch installation protective shell. The structure with the publication number CN107680850A includes a shell, and the shell includes a switch mounting part and a mounting port mounting part. The switch mounting part is movably connected to the mounting port mounting part. The mounting port mounting part includes a mounting port mounting tube and a filling part. Both ends of the mounting port mounting tube are not closed. One end of the mounting port mounting tube is a fixed opening. A fixed connecting part is provided at the fixed opening end for fixing with the mounting port. The other end is a movable opening fixed to the tail line end. The movable opening is a flexible material. A plurality of pores are provided on the outer surface of the movable opening. A fixed rope passes through the plurality of pores and then tightens the flexible material for adjusting the movable opening to match the size of the tail line. The filling part is filled in the movable opening. The fixed opening is provided with a connecting structure and a mounting structure. However, there are still areas that can be optimized in the device.

[0005] The existing devices mainly protect the proximity switch by means of an outer protective shell, which makes it difficult for some devices to avoid direct frontal impact on the fixed shell by means of an anti-collision plate, thereby causing some proximity switch bodies to be damaged by impact. Secondly, some devices mainly fix the proximity switch on the inner front side of the protective shell, which makes it difficult for some devices to retract the proximity switch body to the inner middle of the fixed shell, thereby causing inconvenience in fully protecting the proximity switch body. Furthermore, some devices are difficult to automatically reset after starting the retraction mechanism, thereby causing some devices to need to be manually reset by staff. Finally, some devices are mainly directly connected to the proximity switch body by external wires, which makes it difficult for some devices to directly disconnect the wiring after being retracted for protection, thereby causing some equipment to malfunction and hit the fixed shell multiple times, thereby reducing the working efficiency and practicality of the device. Therefore, in order to solve the above problems, a protective device for the operation of a proximity switch is proposed. Summary of the invention

[0006] The object of the present invention is to provide a protective device for the operation of a proximity switch to solve the problem that the existing devices in the prior art mentioned in the above background technology mainly protect the proximity switch by a jacket protective shell, which makes it difficult for some devices to avoid direct frontal impact of the fixed shell by an anti-collision plate, thereby causing some proximity switch bodies to be damaged by impact. Secondly, some devices mainly fix the proximity switch on the internal front side of the protective shell, which makes it difficult for some devices to retract the proximity switch body to the middle of the fixed shell, thereby causing inconvenience in comprehensive protection of the proximity switch body. Furthermore, some devices are difficult to automatically reset after starting the retraction mechanism, thereby causing some devices to need to be manually reset by staff. Finally, some devices are mainly directly connected to the proximity switch body through external wires, which makes it difficult for some devices to directly disconnect the wiring after being retracted, thereby causing the problem that some equipment fails to operate and hits the fixed shell multiple times.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a protective device for the operation of a proximity switch, comprising a fixed shell, a sliding box is slidably connected to the left side of the interior of the fixed shell, a proximity switch body is placed inside the sliding box, a plug connector is fixedly connected to the right side of the proximity switch body, a circuit protector is fixedly connected to the left side of the top of the fixed shell, a wiring board is fixedly connected to the right side of the circuit protector, an external wire is fixedly connected to the upper right side of the wiring board, the left side of the plug connector can be plugged into the lower right side of the wiring board, a controller is fixedly connected to the right side of the top of the fixed shell, a movable box is fixedly connected to the right side of the bottom of the fixed shell, and a transmission box is fixedly connected to the front side of the movable box;

[0008] An anti-collision mechanism is provided on the left side of the outer wall of the fixed shell, and the anti-collision mechanism includes an anti-collision plate, and the anti-collision plate is provided on the left side of the fixed shell. A retraction mechanism is provided on the right side of the interior of the fixed shell, and the retraction mechanism includes a tension spring, and the right side of the tension spring is fixedly connected to the right side of the inner wall of the fixed shell. A reset mechanism is provided inside the transmission box, and the reset mechanism includes a servo motor, and the rear side of the servo motor is fixedly connected to the middle of the front side of the transmission box.

[0009] Preferably, a sliding rod is fixedly connected to the right side of the anti-collision plate, a limiting seat is sleeved on the right side of the outer wall of the sliding rod, and the outer wall of the limiting seat is fixedly connected to the front and rear sides of the fixed shell.

[0010] Preferably, the left end of the sliding rod is fixedly connected to the sliding frame, the left side of the limiting seat is located on the outer ring of the sliding rod and is fixedly connected to a buffer spring, and the left end of the buffer spring is fixedly connected to the right side of the anti-collision plate.

[0011] Preferably, the left end of the tension spring is fixedly connected to the right side of the sliding box, and a deceleration spring is fixedly connected to the right side of the inner wall of the fixed shell located inside the tension spring.

[0012] Preferably, the right side of the inner wall of the fixed shell is fixedly connected to a limiting frame, the left side of the limiting frame is fixedly connected to a buffer pad, and the right end of the deceleration spring passes through the interior of the limiting frame.

[0013] Preferably, a traction block is provided on the right side of the inner wall of the sliding frame, a sliding block is fixedly connected to the upper right side of the inner wall of the sliding frame, and a sliding groove corresponding to the traction block is opened on the top of the traction block.

[0014] Preferably, a latch is fixedly connected to one side of the traction block close to the fixed shell, the front and rear side walls of the fixed shell are provided with limiting holes corresponding to the latch, and the front and rear side walls of the sliding box are provided with slots corresponding to the latch.

[0015] Preferably, a transmission shaft is fixedly connected to the middle part of the rear side of the servo motor, the rear end of the transmission shaft passes through the transmission box and is fixedly connected to a first bevel gear, the rear side of the first bevel gear is meshingly connected to a second bevel gear, the inner wall of the second bevel gear is fixedly connected to a transmission worm, and the two ends of the transmission worm are movably connected to both sides of the inner wall of the transmission box.

[0016] Preferably, both sides of the outer wall of the transmission worm are meshedly connected with a transmission worm wheel, the inner wall of the transmission worm wheel is fixedly connected with a rotating shaft, the front end of the rotating shaft is movably connected to the front side of the inner wall of the transmission box, and the rear end of the rotating shaft passes through the movable box and is movably connected to the rear side of the inner wall of the movable box.

[0017] Preferably, the outer wall of the rotating shaft is located inside the movable box and is fixedly connected to a rotating wheel, the outer wall of the rotating wheel is tightly attached to a belt, push strips are fixedly connected on both sides of the outer wall of the belt, a push block is fixedly connected to the right side of the bottom of the sliding box, the left side of the push strip can be attached to the right side of the push block, and a limiting sliding slot corresponding to the push block is opened at the bottom of the fixed shell.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention uses the anti-collision plate, sliding rod, limiting seat, sliding frame and buffer spring structures in the anti-collision mechanism. When the foreign object hits the anti-collision plate, the sliding rod and the sliding frame are limited and slide. At the same time, the anti-collision plate buffer spring reduces the impact force of the foreign object, thereby realizing the anti-collision of the fixed shell. The anti-collision plate can be used to prevent the fixed shell from being directly hit from the front, thereby protecting the proximity switch body on the front side of the fixed shell, thereby improving the protection and practicality of the device.

[0020] 2. The present invention uses the structures of the tension spring, deceleration spring, limit frame, buffer pad, traction block, slider, sliding groove, latch, limit hole and slot in the retraction mechanism, and drives the slider to slide to the right through the sliding frame, and the slider drives the traction block and the latch to slide symmetrically outward, so that the latch disengages from the slot of the sliding box, and then drives the sliding box and the proximity switch body to retract to the middle of the interior of the fixed shell through the tension spring, and reduces the retraction speed of the sliding box and the proximity switch body through the deceleration spring, so that the sliding box and the proximity switch body are more gently attached to the buffer pad on the left side of the limit frame, thereby realizing the retraction of the proximity switch body, so that part of the device can retract the proximity switch body to the middle of the interior of the fixed shell, which is convenient for comprehensive protection of the proximity switch body and improves the protection and practicality of the device.

[0021] 3. The present invention uses the servo motor, transmission shaft, first bevel gear, second bevel gear, transmission worm, transmission worm wheel, rotating shaft, rotating wheel, belt, push strip and push block and other structures in the reset mechanism. The servo motor is started to rotate forward through the controller, and the servo motor drives the transmission shaft and the first bevel gear to rotate in a limited position. The meshing of the first bevel gear drives the second bevel gear and the transmission worm to rotate in a limited position. The meshing of the transmission worm drives the transmission worm wheel to rotate synchronously counterclockwise. The transmission worm wheel drives the rotating shaft, rotating wheel, belt and push strip to rotate in a limited position, so that the push strip is attached to the right side of the push block and drives the push block to slide to the right. The push block drives the sliding box and the proximity switch body to slide synchronously, thereby realizing the reset of the proximity switch body, so that part of the device can be automatically reset after the retraction mechanism is started, effectively avoiding manual reset operation by the staff, and improving the convenience and practicality of the device.

[0022] 4. The present invention uses structures such as a sliding box, a proximity switch body, a plug connector, a circuit protector, a terminal block and an external wire to separate the proximity switch body from the circuit protector. When the fixed shell is hit by a strong impact, the retraction mechanism drives the proximity switch body and the plug connector to separate from the terminal block, so that the control circuit is automatically disconnected and the operation of the equipment is shut down, thereby avoiding multiple impacts on the fixed shell due to equipment failure, thereby improving the stability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front side perspective view of the structure of the present invention;

[0024] Figure 2 It is a front cross-sectional perspective view of the structure of the present invention;

[0025] Figure 3 It is a left side sectional stereoscopic view of the local structure of the fixed housing and the anti-collision mechanism of the present invention;

[0026] Figure 4 It is a top-view cross-sectional stereoscopic view of a local structure of a fixed housing and a retracting mechanism of the present invention;

[0027] Figure 5 It is a front cross-sectional perspective view of a partial structure of the sliding frame and the retracting mechanism of the present invention;

[0028] Figure 6 It is a left side sectional stereoscopic view of the local structure of the fixed housing and the retracting mechanism of the present invention;

[0029] Figure 7 It is a top-view cross-sectional perspective view of a local structure of the transmission box and the reset mechanism of the present invention;

[0030] Figure 8 It is a front view cross-sectional stereoscopic diagram of the local structure of the movable box and the reset mechanism of the present invention.

[0031] In the figure: 101, fixed housing; 102, sliding box; 103, proximity switch body; 104, plug connector; 105, circuit protector; 106, terminal block; 107, external wire; 108, controller; 109, movable box; 110, transmission box; 2, anti-collision mechanism; 201, anti-collision plate; 202, sliding rod; 203, limit seat; 204, sliding frame; 205, buffer spring; 3, retraction mechanism; 301, extension spring; 302, deceleration spring; 3 03. Limiting frame; 304. Buffer pad; 305. Traction block; 306. Sliding block; 307. Sliding slot; 308. Latch; 309. Limiting hole; 310. Slot; 4. Reset mechanism; 401. Servo motor; 402. Transmission shaft; 403. First bevel gear; 404. Second bevel gear; 405. Transmission worm; 406. Transmission worm wheel; 407. Rotating shaft; 408. Rotating wheel; 409. Belt; 410. Pushing strip; 411. Pushing block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 8 , an embodiment provided by the present invention:

[0034] A protection device for proximity switch operation, comprising a fixed housing 101, a sliding box 102 is slidably connected to the left side of the interior of the fixed housing 101, a proximity switch body 103 is placed inside the sliding box 102, a plug connector 104 is fixedly connected to the right side of the proximity switch body 103, a circuit protector 105 is fixedly connected to the left side of the top of the fixed housing 101, a wiring board 106 is fixedly connected to the right side of the circuit protector 105, an external wire 107 is fixedly connected to the upper right side of the wiring board 106, the left side of the plug connector 104 can be plugged into the lower right side of the wiring board 106, a controller 108 is fixedly connected to the right side of the top of the fixed housing 101, a movable box 109 is fixedly connected to the right side of the bottom of the fixed housing 101, and a transmission box 110 is fixedly connected to the front side of the movable box 109;

[0035] An anti-collision mechanism 2 is provided on the left side of the outer wall of the fixed shell 101, and the anti-collision mechanism 2 includes an anti-collision plate 201, which is arranged on the left side of the fixed shell 101, and a sliding rod 202 is fixedly connected to the right side of the anti-collision plate 201, and a limiting seat 203 is sleeved on the right side of the outer wall of the sliding rod 202, and the outer wall of the limiting seat 203 is fixedly connected to the front and rear sides of the fixed shell 101. Through this design, the anti-collision plate 201 drives the sliding rod 202 to slide on the inner wall of the limiting seat 203, and the left end of the sliding rod 202 is fixedly connected to a sliding frame 204, and the left side of the limiting seat 203 is fixedly connected to the outer ring of the sliding rod 202, and the left end of the buffer spring 205 is fixedly connected to the right side of the anti-collision plate 201. Through this design, the anti-collision plate 201 reduces the impact force of foreign objects by compressing the buffer spring 205, thereby effectively preventing the fixed shell 101 from being directly hit by the front.

[0036] A retraction mechanism 3 is provided on the right side of the interior of the fixed shell 101, and the retraction mechanism 3 includes a tension spring 301, the right side of the tension spring 301 is fixedly connected to the right side of the inner wall of the fixed shell 101, and the left end of the tension spring 301 is fixedly connected to the right side of the sliding box 102. The right side of the inner wall of the fixed shell 101 is located inside the tension spring 301 and is fixedly connected with a deceleration spring 302. Through this design, the tension spring 301 can drive the sliding box 102 and the proximity switch body 103 to retract to the middle of the interior of the fixed shell 101, and at the same time, the deceleration spring 302 can effectively reduce the retraction speed of the sliding box 102 and the proximity switch body 103. The right side of the inner wall of the fixed shell 101 is located at a fixed connection limit frame 303, and the left side of the limit frame 303 is fixedly connected with a buffer pad 304. The right end of the deceleration spring 302 passes through the interior of the limit frame 303. Through this design, the sliding box 102 is stably limited and retracted to the left side of the limit frame 303, and at the same time, the buffer pad 304 can effectively To avoid the rigid collision between the sliding box 102 and the limit frame 303, a traction block 305 is provided on the right side of the inner wall of the sliding frame 204, and a slider 306 is fixedly connected to the upper right side of the inner wall of the sliding frame 204. A sliding groove 307 corresponding to the traction block 305 is provided on the top of the traction block 305. Through this design, the sliding frame 204 can drive the slider 306 to slide within the inner limit of the sliding groove 307, so that the slider 306 drives the traction block 305 to slide, which is convenient for the anti-collision mechanism 2 to reach a certain bearing limit. After that, the retraction mechanism 3 can be started. The traction block 305 is fixedly connected to a side of the fixed shell 101 close to the bolt 308. The front and rear side walls of the fixed shell 101 are provided with limiting holes 309 corresponding to the bolt 308. The front and rear side walls of the sliding box 102 are provided with card slots 310 corresponding to the bolt 308. Through this design, the traction block 305 can drive the bolt 308 to be locked or disengaged from the card slot 310, which is convenient for limiting the sliding box 102 and the proximity switch body 103 or triggering retraction.

[0037] The transmission box 110 is provided with a reset mechanism 4 inside, and the reset mechanism 4 includes a servo motor 401, the rear side of the servo motor 401 is fixedly connected to the middle of the front side of the transmission box 110, the middle of the rear side of the servo motor 401 is fixedly connected to a transmission shaft 402, the rear end of the transmission shaft 402 passes through the transmission box 110 and is fixedly connected to a first bevel gear 403, the rear side of the first bevel gear 403 is meshedly connected to a second bevel gear 404, and the inner wall of the second bevel gear 404 is fixedly connected to a transmission worm 405, the two ends of the transmission worm 405 are movably connected to the inner wall of the transmission box 110. Through this design, the servo motor 401 drives the transmission shaft 402 and the first bevel gear 403 to rotate in a limited position, so that the first bevel gear 403 is engaged to drive the second bevel gear 404 and the transmission worm 405 to rotate in a limited position. The outer wall of the transmission worm 405 is meshed with a transmission worm wheel 406, and the inner wall of the transmission worm wheel 406 is fixedly connected with a rotating shaft 407. The front end of the rotating shaft 407 is movable. The rear end of the rotating shaft 407 passes through the movable box 109 and is movably connected to the rear side of the inner wall of the movable box 109. Through this design, the transmission worm 405 is meshed to drive the transmission worm wheel 406 to rotate synchronously, so that the transmission worm wheel 406 drives the rotating shaft 407 to rotate in a limited position. The outer wall of the rotating shaft 407 is located inside the movable box 109 and is fixedly connected to the rotating wheel 408. The outer wall of the rotating wheel 408 is tightly attached to the belt 409. The outer wall of the belt 409 is A push strip 410 is fixedly connected to the side, and a push block 411 is fixedly connected to the bottom right side of the sliding box 102. The left side of the push strip 410 can be attached to the right side of the push block 411. A limiting sliding gap corresponding to the push block 411 is opened at the bottom of the fixed shell 101. Through this design, the rotating shaft 407 drives the rotating wheel 408, the belt 409 and the push strip 410 to rotate, so that the push strip 410 can drive the push block 411, the sliding box 102 and the proximity switch body 103 to automatically reset.

[0038] Working principle: When the fixed shell 101 needs to be anti-collision, the anti-collision plate 201 is first hit by a foreign object, and the anti-collision plate 201 drives the sliding rod 202 to slide to the right on the inner wall of the limit seat 203, and the sliding rod 202 drives the sliding frame 204 to slide synchronously. At the same time, the anti-collision plate 201 buffers the spring 205 to reduce the impact force of the foreign object, effectively preventing the fixed shell 101 from being directly hit by the front, thereby realizing the anti-collision operation of the fixed shell 101.

[0039] When the proximity switch body 103 needs to be retracted, the sliding frame 204 is first used to drive the slider 306 to slide to the right. The slider 306 is restricted by the sliding groove 307 and drives the traction block 305 to slide symmetrically outward. The traction block 305 drives the latch 308 to slide synchronously, so that the latch 308 disengages from the slot 310 of the sliding box 102. Then, the sliding box 102 and the proximity switch body 103 are driven to retract to the middle of the interior of the fixed shell 101 by the tension spring 301. At the same time, the retraction speed of the sliding box 102 and the proximity switch body 103 is reduced by the deceleration spring 302, so that the sliding box 102 and the proximity switch body 103 are more gently attached to the buffer pad 304 on the left side of the limit frame 303, thereby realizing the retraction operation of the proximity switch body 103.

[0040] When the proximity switch body 103 needs to be reset, the servo motor 401 is first started to rotate forwardly through the controller 108, and the servo motor 401 drives the transmission shaft 402 to limit rotation, and the transmission shaft 402 drives the first bevel gear 403 to rotate synchronously, and the first bevel gear 403 engages to drive the second bevel gear 404 to rotate, and the second bevel gear 404 drives the transmission worm 405 to limit rotation, and the transmission worm 405 engages to drive the transmission worm wheel 406 to rotate synchronously counterclockwise, and the transmission worm wheel 406 drives the rotating shaft 407 to limit rotation, and the rotating shaft 407 drives the rotating wheel 408 to rotate synchronously, and the rotating wheel 408 drives the belt 409 to limit rotation, and the belt 409 drives the pushing bar 410 to slide synchronously, so that the pushing bar 410 is attached to the right side of the pushing block 411 and drives the pushing block 411 to slide to the right, and the pushing block 411 drives the sliding box 102 and the proximity switch body 103 to slide synchronously, thereby realizing the reset operation of the proximity switch body 103, and the operation ends here.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A protective device for proximity switch operation, comprising a fixed housing (101), characterized in that: A sliding box (102) is slidably connected to the left side of the interior of the fixed housing (101), a proximity switch body (103) is placed inside the sliding box (102), a plug connector (104) is fixedly connected to the right side of the proximity switch body (103), a circuit protector (105) is fixedly connected to the left side of the top of the fixed housing (101), a wiring board (106) is fixedly connected to the right side of the circuit protector (105), an external wire (107) is fixedly connected to the upper right side of the wiring board (106), the left side of the plug connector (104) can be plugged into the lower right side of the wiring board (106), a controller (108) is fixedly connected to the right side of the top of the fixed housing (101), a movable box (109) is fixedly connected to the right side of the bottom of the fixed housing (101), and a transmission box (110) is fixedly connected to the front side of the movable box (109); An anti-collision mechanism (2) is provided on the left side of the outer wall of the fixed shell (101), and the anti-collision mechanism (2) comprises an anti-collision plate (201), the anti-collision plate (201) is provided on the left side of the fixed shell (101), a sliding rod (202) is fixedly connected to the right side of the anti-collision plate (201), a limiting seat (203) is sleeved on the right side of the outer wall of the sliding rod (202), the outer wall of the limiting seat (203) is fixedly connected to the front and rear sides of the fixed shell (101), the left end of the sliding rod (202) is fixedly connected to a sliding frame (204), the left side of the limiting seat (203) is located on the outer ring of the sliding rod (202) and is fixedly connected to a buffer spring (205), and the left end of the buffer spring (205) is fixedly connected to the right side of the anti-collision plate (201); A retracting mechanism (3) is provided on the right side inside the fixed housing (101), the retracting mechanism (3) comprises a tension spring (301), the right side of the tension spring (301) is fixedly connected to the right side of the inner wall of the fixed housing (101), and a reset mechanism (4) is provided inside the transmission box (110), the reset mechanism (4) comprises a servo motor (401), and the rear side of the servo motor (401) is fixedly connected to the middle part of the front side of the transmission box (110).

2. A protection device for proximity switch operation according to claim 1, characterized in that: The left end of the tension spring (301) is fixedly connected to the right side of the sliding box (102), and a deceleration spring (302) is fixedly connected to the right side of the inner wall of the fixed housing (101) located inside the tension spring (301).

3. A protection device for proximity switch operation according to claim 2, characterized in that: The right side of the inner wall of the fixed housing (101) is fixedly connected to a limiting frame (303), the left side of the limiting frame (303) is fixedly connected to a buffer pad (304), and the right end of the deceleration spring (302) passes through the interior of the limiting frame (303).

4. A protective device for proximity switch operation according to claim 1, characterized in that: A traction block (305) is provided on the right side of the inner wall of the sliding frame (204), a sliding block (306) is fixedly connected to the upper right side of the inner wall of the sliding frame (204), and a sliding groove (307) corresponding to the traction block (305) is provided on the top of the traction block (305).

5. A protective device for proximity switch operation according to claim 4, characterized in that: A latch pin (308) is fixedly connected to one side of the traction block (305) close to the fixed housing (101); a limiting hole (309) corresponding to the latch pin (308) is provided on the front and rear side walls of the fixed housing (101); and a slot (310) corresponding to the latch pin (308) is provided on the front and rear side walls of the sliding box (102).

6. A protective device for proximity switch operation according to claim 1, characterized in that: A transmission shaft (402) is fixedly connected to the middle of the rear side of the servo motor (401); the rear end of the transmission shaft (402) passes through the transmission box (110) and is fixedly connected to a first bevel gear (403); the rear side of the first bevel gear (403) is meshedly connected to a second bevel gear (404); a transmission worm (405) is fixedly connected to the inner wall of the second bevel gear (404); and two ends of the transmission worm (405) are movably connected to both sides of the inner wall of the transmission box (110).

7. A protective device for proximity switch operation according to claim 6, characterized in that: The transmission worm gear (406) is meshedly connected to both sides of the outer wall of the transmission worm (405), and the inner wall of the transmission worm gear (406) is fixedly connected to a rotating shaft (407). The front end of the rotating shaft (407) is movably connected to the front side of the inner wall of the transmission box (110), and the rear end of the rotating shaft (407) passes through the movable box (109) and is movably connected to the rear side of the inner wall of the movable box (109).

8. A protection device for proximity switch operation according to claim 7, characterized in that: The outer wall of the rotating shaft (407) is located inside the movable box (109) and is fixedly connected to a rotating wheel (408); the outer wall of the rotating wheel (408) is tightly attached to a belt (409); push strips (410) are fixedly connected to both sides of the outer wall of the belt (409); a push block (411) is fixedly connected to the right side of the bottom of the sliding box (102); the left side of the push strip (410) can be attached to the right side of the push block (411); and a limiting sliding slot corresponding to the push block (411) is opened at the bottom of the fixed shell (101).

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