Stroke sensor protection device

Abstract

The utility model provides a stroke sensor protection device, and relates to the field of sensor protection. The stroke sensor protection device comprises a protection box assembly, a stroke sensor, an internal toggle mechanism and an external lever assembly. The external lever assembly drives the internal shifting mechanism to swing upwards, the internal shifting mechanism shifts the stroke sensor to work, the swing angle of the internal shifting mechanism is limited by the protection box assembly, the situation that shifting of the stroke sensor by the internal shifting mechanism exceeds the stroke is reduced, and when an object leaves the external lever assembly, the internal shifting mechanism swings upwards and automatically returns. Firstly, an object is not in direct contact with the stroke sensor, the situation that the stroke sensor exceeds the maximum stroke and is damaged due to the impact force of the object is reduced, secondly, the stroke sensor is protected inside through the protection box assembly, and the situation that the stroke sensor is damaged due to external rainwater or water in a use environment is reduced. And electric appliances in the stroke sensor are damaged due to short circuit.

Description

Technical Field

[0001] This utility model relates to the field of sensor protection technology, and more specifically, to a travel sensor protection device. Background Technology

[0002] Limit switches are a type of travel sensor that mechanically detects the position or motion of an object and converts it into an electrical signal. When the object reaches a predetermined position, the limit switch is triggered, sending a signal that the control circuit can then execute corresponding operations, such as stopping, reversing, or changing the machine's operating state. They mainly consist of a roller, an operating mechanism, a contact system, and a housing. The roller, the direct acting part of the limit switch, is usually made of metal or sturdy plastic and is mounted on the outside of the switch to receive external mechanical force. When the roller is pushed, it drives the operating mechanism to swing, converting the roller's motion into the action of the internal contacts, thus controlling the circuit. The housing is the protective layer of the limit switch and is usually made of metal or plastic.

[0003] In related technologies, the operating mechanism of the stroke sensor is relatively weak. When an object hits the roller and the operating mechanism, the operating mechanism lacks corresponding protection. On the one hand, the operating mechanism is easily damaged due to the impact force of the object exceeding the maximum stroke. On the other hand, the stroke sensor is directly exposed to the outside. When the seal of the stroke sensor fails, it is easy for water to enter the sensor due to external rain or the environment, which may cause short circuit damage to the internal electrical components. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a stroke sensor protection device, which has the effects of protecting the stroke sensor from exceeding its maximum stroke and reducing damage caused by water ingress.

[0005] The stroke sensor protection device according to an embodiment of the present invention includes: a protection box assembly, a stroke sensor, an internal actuation mechanism, and an external lever assembly.

[0006] The stroke sensor is fixedly connected to the inner wall of the rear side of the protective box assembly. The internal actuating mechanism is located inside the protective box assembly, and the lower end of the internal actuating mechanism rotatably passes through the inner wall of the front side of the protective box assembly. The protective box assembly can limit the swing angle of the internal actuating mechanism. The lower end of the external lever assembly is fixedly sleeved on one end of the internal actuating mechanism that extends out of the protective box assembly.

[0007] According to some embodiments of this utility model, the protective box assembly includes a protective box, a rear sealing mounting component, a first hanging ring, a through-hole tube, a limiting rod, a fixing seat, and a connecting seat. The rear side of the protective box has a mounting hole. The inner side of the rear sealing mounting component passes through the mounting hole and is inserted into the interior of the protective box. The stroke sensor is fixedly connected to the inner side of the rear sealing mounting component. The outer side of the rear sealing mounting component is tightened and fixed to the rear side of the protective box by bolts. The through-hole tube is fixedly inserted through the lower part of the other front end of the protective box, and the internal actuating mechanism... The lower end rotates through the through-chamber tube. Two limiting rods are provided, and the two limiting rods are fixedly connected to the upper part of the front side inside the protective box. The two limiting rods are respectively located on the left and right sides of the through-chamber tube. The internal actuating mechanism swings between the two limiting rods. One side of the upper end of the internal actuating mechanism is hooked to the first hanging ring, and the other side of the upper end of the internal actuating mechanism can actuate the roller of the stroke sensor. The fixed seat is fixedly connected to the outside of the left and right sides of the protective box, and the connecting seat is fixedly connected to the fixed seat by bolts and nuts.

[0008] According to some embodiments of the present invention, the protective box includes a front box body, a sealing plate, and a rear mounting plate. The top and bottom of the front box body are sealed by two sealing plates. The rear mounting plate is fixedly connected to the rear side of the front box body and the sealing plates at the top and bottom. The front box body, the two sealing plates, and the rear mounting plate form a square box body. The mounting hole is opened on the rear mounting plate.

[0009] According to some embodiments of the present invention, the rear sealing mounting component includes a rear seat plate and a bending seat. The bending seat is fixedly connected to the inner side of the rear seat plate, the stroke sensor is fixedly connected to the bending seat, the bending seat passes through the mounting hole, and the rear seat plate is pressed and fixed to the rear side of the protective box by bolts.

[0010] According to some embodiments of this utility model, the internal actuating mechanism includes a through-chamber sealing shaft, an inner connecting cylinder, an outer connecting cylinder, an inner actuating rod, an actuating plate, a tension spring, and a second hanging ring. The through-chamber sealing shaft rotatably passes through the through-chamber cylinder. The inner connecting cylinder is fixedly sleeved on one end of the through-chamber sealing shaft located inside the protective box. The inner actuating rod is fixedly connected to the outside of the inner connecting cylinder and can swing between the two limiting rods. The actuating plate is fixedly connected to the inner side wall of the upper end of the inner actuating rod. As the actuating plate swings, it can press against the roller driven by the stroke sensor. The second hanging ring is fixedly connected to the outer wall of the inner actuating rod. One end of the tension spring is hooked to the second hanging ring, and the other end of the tension spring is hooked to the first hanging ring. The outer connecting cylinder is fixedly sleeved on one end of the through-chamber sealing shaft located outside the protective box. The lower end of the external lever assembly is fixedly sleeved on the outer connecting cylinder.

[0011] According to some embodiments of the present invention, an annular sealing groove is provided on the through-chamber sealing shaft, and a sealing ring is sleeved on the annular sealing groove. The sealing ring is compressed and sealed to the through-chamber cylinder by elastic deformation.

[0012] According to some embodiments of this utility model, the through-chamber sealing shaft includes a through-chamber shaft, an inner limiting ring, a flat key, and an elastic retaining ring. The annular sealing groove is formed on the through-chamber shaft. The inner limiting ring is fixedly connected to one end of the through-chamber shaft located inside the protective box. The inner connecting cylinder is connected to the through-chamber shaft via the flat key. The inner limiting ring blocks the inner connecting cylinder. The elastic retaining ring is elastically deformed and sleeved on one end of the through-chamber shaft located outside the protective box. The outer connecting cylinder is also connected to the through-chamber shaft via the flat key. The elastic retaining ring blocks the outer connecting cylinder.

[0013] According to some embodiments of the present invention, the external lever assembly includes a swing lever frame and a swing wheel. The swing wheel is disposed at the top of the swing lever frame, and the lower end of the swing lever frame is fixedly sleeved on one end of the internal actuating mechanism extending out of the protective box assembly.

[0014] According to some embodiments of this utility model, a reinforcing rib is provided on the outer side of the swing lever frame, and a connecting bolt rod is inserted into the top of the swing lever frame. The connecting bolt rod passes through the swing wheel, and a clamping nut is threadedly connected to one end of the connecting bolt rod through the swing wheel. The clamping nut clamps the swing wheel.

[0015] The beneficial effects of this utility model are as follows: When an object contacts the external lever assembly, the external lever assembly swings around the connection point at the lower end of the external lever assembly. The external lever assembly drives the internal actuating mechanism to swing upward, and the internal actuating mechanism actuates the stroke sensor. The swing angle of the internal actuating mechanism is limited by the protective box assembly, reducing the actuation of the internal actuating mechanism on the stroke sensor from exceeding the stroke. When the object leaves the external lever assembly, the internal actuating mechanism swings upward and automatically returns to its original position. Firstly, the object does not directly contact the stroke sensor, reducing the possibility of the stroke sensor being damaged due to the impact force of the object exceeding the maximum stroke. Secondly, the stroke sensor is protected internally by the protective box assembly, reducing the possibility of short circuit damage to the internal electrical components of the stroke sensor due to external rainwater or water in the usage environment.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first-view perspective three-dimensional structural diagram of the travel sensor protection device according to an embodiment of the present utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the travel sensor protection device according to an embodiment of the present utility model from a second perspective;

[0020] Figure 3 This is a three-dimensional structural schematic diagram of the protective box assembly according to an embodiment of the present utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the protective box according to an embodiment of the present utility model;

[0022] Figure 5 This is a three-dimensional structural schematic diagram of the rear sealing mounting component according to an embodiment of the present utility model;

[0023] Figure 6 This is a three-dimensional structural schematic diagram of the internal actuating mechanism according to an embodiment of the present utility model;

[0024] Figure 7 This is a three-dimensional structural schematic diagram of the through-chamber sealing shaft according to an embodiment of the present utility model;

[0025] Figure 8 This is a three-dimensional structural schematic diagram of the external lever assembly according to an embodiment of the present utility model;

[0026] Figure 9 This is a three-dimensional structural diagram of the external lever assembly without a swing wheel according to an embodiment of the present utility model.

[0027] Icons: 100-Protective box assembly; 110-Protective box; 111-Before bending box body; 112-Sealing plate; 113-Rear mounting plate; 120-Mounting hole; 130-Rear sealing mounting piece; 131-Rear seat plate; 132-Bending seat; 140-First hanging ring; 150-Through-chamber cylinder; 160-Limit rod; 170-Fixed seat; 180-Connecting seat; 200-Stroke sensor; 300-Internal actuating mechanism; 310-Through-chamber sealing shaft Components; 311-Through-the-cabin shaft; 312-Inner limit ring; 313-Flat key; 314-Elastic retaining ring; 320-Inner connecting cylinder; 330-Outer connecting cylinder; 340-Sealing ring; 350-Inner actuating rod; 360-Actuating plate; 370-Tension spring; 380-Second hanging ring; 400-Outer lever assembly; 410-Swing lever frame; 420-Swing wheel; 430-Connecting bolt rod; 440-Pressure nut; 450-Reinforcing rib. Detailed Implementation

[0028] The technical solutions of the present invention will now be described with reference to the accompanying drawings in the embodiments of the present invention.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] The travel sensor protection device according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0031] Please see Figures 1 to 9 The stroke sensor protection device according to an embodiment of the present utility model includes: a protection box assembly 100, a stroke sensor 200, an internal actuation mechanism 300, and an external lever assembly 400.

[0032] Please see Figures 1 to 2The stroke sensor 200 is fixedly connected to the inner wall of the rear side of the protective box assembly 100. The internal actuating mechanism 300 is located inside the protective box assembly 100, and the lower end of the internal actuating mechanism 300 rotates through the inner wall of the front side of the protective box assembly 100. The protective box assembly 100 can limit the swing angle of the internal actuating mechanism 300. The lower end of the external lever assembly 400 is fixedly sleeved on one end of the internal actuating mechanism 300 that extends out of the protective box assembly 100. When an object contacts the external lever assembly 400, the external lever assembly 400 swings around the connection at its lower end. The external lever assembly 400 drives the internal actuating mechanism 300 to swing upward, which in turn activates the stroke sensor 200. The swing angle of the internal actuating mechanism 300 is limited by the protective housing assembly 100, reducing the possibility that the actuation of the internal actuating mechanism 300 on the stroke sensor 200 exceeds its stroke. When the object leaves the external lever assembly 400, the internal actuating mechanism 300 automatically returns to its original position after swinging upward. Firstly, the object does not directly contact the stroke sensor 200, reducing the possibility that the stroke sensor 200 may be damaged due to the impact force of the object exceeding its maximum stroke. Secondly, the stroke sensor 200 is protected internally by the protective housing assembly 100, reducing the possibility that the internal electrical components of the stroke sensor may be damaged by rainwater or water in the operating environment, which could cause a short circuit.

[0033] Please see Figures 1 to 3The protective box assembly 100 includes a protective box 110, a rear sealing mounting component 130, a first hanging ring 140, a through-hole tube 150, a limiting rod 160, a fixing seat 170, and a connecting seat 180. A mounting hole 120 is provided on the rear side of the protective box 110. The inner side of the rear sealing mounting component 130 passes through the mounting hole 120 and is inserted into the interior of the protective box 110. A stroke sensor 200 is fixedly connected to the inner side of the rear sealing mounting component 130. The outer side of the rear sealing mounting component 130 is tightened and fixed to the rear side of the protective box 110 by bolts. The through-hole tube 150 is fixedly inserted through the lower part of the other front end of the protective box 110, and contains an internal toggle mechanism. The lower end of the structure 300 rotates through the through-chamber tube 150. Two limit rods 160 are provided. The two limit rods 160 are fixedly connected to the upper part of the front side inside the protective box 110. The two limit rods 160 are located on the left and right sides of the through-chamber tube 150 respectively. The internal actuating mechanism 300 swings between the two limit rods 160. One side of the upper end of the internal actuating mechanism 300 is hooked to the first hanging ring 140. The other side of the upper end of the internal actuating mechanism 300 can actuate the roller of the stroke sensor 200. The fixed seat 170 is fixedly connected to the outside of the left and right sides of the protective box 110. The connecting seat 180 is fixedly connected to the fixed seat 170 by bolts and nuts. The connector 180 is connected to an external device, and the mounting bracket 170 connects the protective box 110 to the connector 180. The rear sealing mounting bracket 130 is used to install the travel sensor 200, and the rear sealing mounting bracket 130 seals the back of the protective box 110, making the interior of the protective box 110 sealed. The travel sensor 200 is protected inside the protective box 110, reducing the possibility of short circuit damage to the internal electrical components of the travel sensor due to external rain or water in the usage environment. The lower end of the external lever assembly 400 swings around the chamber 150. The external lever assembly 400 drives the internal actuating mechanism 300 to swing upward against the elastic force. The internal actuating mechanism 300 actuates the stroke sensor 200. One of the limit rods 160 limits the upward swing angle of the internal actuating mechanism 300, preventing the internal actuating mechanism 300 from driving the stroke sensor 200 to exceed the maximum stroke. After the object leaves the external lever assembly 400, the internal actuating mechanism 300 swings downward under the action of the elastic force, blocking the other limit rod 160. The other limit rod 160 limits the downward swing angle of the internal actuating mechanism 300. The object does not directly contact the stroke sensor 200, reducing the possibility that the stroke sensor 200 may be damaged due to the impact force of the object exceeding the maximum stroke.

[0034] Please see Figures 1 to 4The protective box 110 includes a front box body 111, a sealing plate 112, and a rear mounting plate 113. The top and bottom of the front box body 111 are sealed by two sealing plates 112. The rear mounting plate 113 is fixedly connected to the rear side of the front box body 111 and the sealing plates 112 at the top and bottom. The front box body 111, the two sealing plates 112, and the rear mounting plate 113 form a square box. The mounting hole 120 is opened on the rear mounting plate 113. The protective box 110 is sealed by the front box body 111, the two sealing plates 112, and the rear mounting plate 113 to form a box with a mounting hole 120 on the back. The stroke sensor 200 extends into the protective box 110 through the mounting hole 120, and then the mounting hole 120 is sealed by the rear sealing mounting piece 130.

[0035] Please see Figures 1 to 5 The rear mounting component 130 includes a rear seat plate 131 and a bending seat 132. The bending seat 132 is fixedly connected to the inner side of the rear seat plate 131, and the stroke sensor 200 is fixedly connected to the bending seat 132. The bending seat 132 passes through the mounting hole 120, and the rear seat plate 131 is tightened and fixed to the rear side of the protective box 110 by bolts. The rear seat plate 131 is used to seal the mounting hole 120 on the rear mounting plate 113, and the bending seat 132 is used to install the stroke sensor 200.

[0036] Please see Figures 1 to 6The internal actuation mechanism 300 includes a through-chamber sealing shaft 310, an inner connecting cylinder 320, an outer connecting cylinder 330, a sealing ring 340, an inner actuation rod 350, an actuation plate 360, a tension spring 370, and a second hanging ring 380. The through-chamber sealing shaft 310 rotatably passes through the through-chamber cylinder 150. An annular sealing groove is provided on the through-chamber sealing shaft 310, and a sealing ring 340 is sleeved on the annular sealing groove. The sealing ring 340 presses and seals the through-chamber cylinder 150 through elastic deformation. The inner connecting cylinder 320 is fixedly sleeved on one end of the through-chamber sealing shaft 310 located inside the protective box 110. The inner actuation rod 350 is fixedly connected to the outer side of the inner connecting cylinder 320. On the side, the inner actuating rod 350 can swing between the two limiting rods 160. The actuating plate 360 ​​is fixedly connected to the inner side wall of the upper end of the inner actuating rod 350. As the actuating plate 360 ​​swings, the actuating plate 360 ​​can press against the roller driven by the stroke sensor 200. The second hanging ring 380 is fixedly connected to the outer wall of the inner actuating rod 350. One end of the tension spring 370 is hung on the second hanging ring 380, and the other end of the tension spring 370 is hung on the first hanging ring 140. The outer connecting cylinder 330 is fixedly sleeved on the end of the through-chamber sealing shaft 310 located outside the protective box 110. The lower end of the outer lever assembly 400 is fixedly sleeved on the outer connecting cylinder 330. A sealing ring 340 seals the passage sealing shaft 310 and the passage cylinder 150. The passage sealing shaft 310 passes through and is rotatably connected inside the passage cylinder 150, sealing the passage sealing shaft 310 and the passage cylinder 150. Both the inner connecting cylinder 320 and the outer connecting cylinder 330 rotate with the passage sealing shaft 310. The outer lever assembly 400 drives the outer connecting cylinder 330, which in turn drives the inner connecting cylinder 320 via the passage sealing shaft 310. The inner connecting cylinder 320 then drives the inner actuating rod 350 to swing. The lever 350 actuates the roller of the travel sensor 200 via the actuating plate 360. The inner lever 350 pulls one end of the tension spring 370 via the second hanging ring 380. The other end of the tension spring 370 is hung in the protective box 110 via the first hanging ring 140. When the inner lever 350 swings upward, the tension spring 370 extends and the elastic force increases. Conversely, under the elastic force of the tension spring 370, the inner lever 350 swings downward back to its original position. The two limiting rods 160 limit the angle of the inner lever 350 swinging upward and downward.

[0037] Please see Figures 1 to 7The through-chamber sealing shaft 310 includes a through-chamber shaft 311, an inner limiting ring 312, a flat key 313, and an elastic retaining ring 314. An annular sealing groove is formed on the through-chamber shaft 311. The inner limiting ring 312 is fixedly connected to one end of the through-chamber shaft 311 located inside the protective box 110. The inner connecting cylinder 320 is connected to the through-chamber shaft 311 via the flat key 313. The inner limiting ring 312 blocks the inner connecting cylinder 320. The elastic retaining ring 314 is elastically deformed and sleeved on one end of the through-chamber shaft 311 located outside the protective box 110. The outer connecting cylinder 330 is also connected to the through-chamber shaft 311 via the flat key 313. The elastic retaining ring 314 blocks the outer connecting cylinder 330. The limiting ring 312 and the inner side of the through-hole tube 150 restrict the two ends of the inner connecting tube 320, and the elastic retaining ring 314 and the outer side of the through-hole tube 150 restrict the two ends of the outer connecting tube 330. The inner connecting tube 320 and the outer connecting tube 330 are both connected to the through-hole shaft 311 by a flat key 313, so that the inner connecting tube 320 and the outer connecting tube 330 rotate with the through-hole shaft 311 via the flat key 313.

[0038] Please see Figures 1 to 8 The external lever assembly 400 includes a swing lever frame 410 and a swing wheel 420. The swing wheel 420 is located at the top of the swing lever frame 410, and the lower end of the swing lever frame 410 is fixedly sleeved to one end of the internal actuating mechanism 300 extending out of the protective box assembly 100. The swing wheel 420 contacts the object, reducing damage to the object caused by the swing lever frame 410. The object drives the swing lever frame 410 to swing through the swing wheel 420.

[0039] Please see Figures 1 to 9 The swing lever frame 410 has a reinforcing rib 450 on its outer side. A connecting bolt rod 430 is inserted into the top of the swing lever frame 410. The connecting bolt rod 420 passes through the swing wheel 420. One end of the connecting bolt rod 430 passing through the swing wheel 420 is threadedly fitted with a clamping nut 440, which clamps the swing wheel 420. The reinforcing rib 450 strengthens the swing lever frame 410. The swing wheel 420 is connected by the connecting bolt rod 430 and the clamping nut 440. When the swing wheel 420 needs to be replaced, the clamping nut 440 is unscrewed, and the connecting bolt rod 430 can be pulled out, disengaging the swing wheel 420 from the connecting bolt rod 430. After replacing the swing wheel 420, it is reinstalled in reverse order, facilitating the replacement of the swing wheel 420.

[0040] Specifically, the working principle of the travel sensor protection device is as follows: the connecting base 180 is connected to an external device, the fixing base 170 connects the protection box 110 to the connecting base 180, the rear sealing mounting part 130 is used to install the travel sensor 200, and the rear sealing mounting part 130 seals the back of the protection box 110, so that the inside of the protection box 110 is sealed, and the travel sensor 200 is protected inside the protection box 110, reducing the possibility of short circuit damage to the internal electrical components of the travel sensor due to external rain or water in the usage environment. When an object contacts the swing wheel 420, it reduces the damage to the object caused by the swing lever frame 410. The object drives the swing lever frame 410 to swing via the swing wheel 420. The lower end of the swing lever frame 410 drives the outer connecting cylinder 330 and the through-chamber shaft 311 to rotate together inside the through-chamber cylinder 150. The through-chamber shaft 311 drives the inner connecting cylinder 320 to rotate. The inner connecting cylinder 320 drives the inner actuating rod 350 to swing. The inner actuating rod 350 actuates the roller of the stroke sensor 200 via the actuating plate 360. The inner actuating rod 350 pulls one end of the tension spring 370 via the second hanging ring 380, pulling... The other end of the extension spring 370 is hung inside the protective box 110 via the first hanging ring 140. When the inner actuating rod 350 swings upward, the extension spring 370 extends, increasing the elastic force. One of the limiting rods 160 limits the upward swing angle of the inner actuating rod 350, preventing the actuating plate 360 ​​from causing the travel sensor 200 to exceed its maximum travel. Conversely, when an object leaves the swing wheel 420, the inner actuating rod 350 swings downward back to its original position under the elastic force of the extension spring 370. The two limiting rods 160 limit the upward and downward swing angles of the inner actuating rod 350. Firstly, the object does not directly contact the travel sensor 200, reducing the possibility of the travel sensor 200 being damaged due to the impact force of the object exceeding its maximum travel. Secondly, the travel sensor 200 is protected internally by the protective box 110, reducing the possibility of short circuits and damage to the internal electrical components of the travel sensor due to external rainwater or water in the operating environment.

[0041] It should be noted that the specific model and specifications of the stroke sensor 200 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0042] The power supply and operating principle of the travel sensor 200 are clear to those skilled in the art and will not be described in detail here.

[0043] The above are merely embodiments of this utility model and are not intended to limit the scope of protection of this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A travel sensor protection device, characterized in that, include: Protective enclosure assembly (100); A stroke sensor (200) is fixedly connected to the inner wall of the rear side of the protective housing assembly (100); An internal actuating mechanism (300) is located inside the protective box assembly (100), and the lower end of the internal actuating mechanism (300) rotatably penetrates the inner sidewall of the front side of the protective box assembly (100). The protective box assembly (100) can limit the swing angle of the internal actuating mechanism (300). An external lever assembly (400) is fixedly sleeved at its lower end to one end of the internal actuating mechanism (300) extending out of the protective box assembly (100).

2. The travel sensor protection device according to claim 1, characterized in that, The protective box assembly (100) includes a protective box (110), a rear sealing mounting component (130), a first hanging ring (140), a through-hole tube (150), a limiting rod (160), a fixing seat (170), and a connecting seat (180). A mounting hole (120) is provided on the rear side of the protective box (110). The inner side of the rear sealing mounting component (130) passes through the mounting hole (120) and is inserted into the interior of the protective box (110). The stroke sensor (200) is fixedly connected to the inner side of the rear sealing mounting component (130). The outer side of the rear sealing mounting component (130) is tightened and fixed to the rear side of the protective box (110) by bolts. The first hanging ring (140) is inserted into the interior of one end of its front side. The through-hole tube (150) is fixedly inserted through the lower part of the other end of the front side of the protective box (110). The internal actuator... The lower end of the structure (300) rotates through the through-chamber tube (150). There are two limiting rods (160). The two limiting rods (160) are fixedly connected to the upper part of the front side of the protective box (110). The two limiting rods (160) are located on the left and right sides of the through-chamber tube (150). The internal actuating mechanism (300) swings between the two limiting rods (160). One side of the upper end of the internal actuating mechanism (300) is hooked to the first hanging ring (140). The other side of the upper end of the internal actuating mechanism (300) can actuate the roller of the stroke sensor (200). The fixed seat (170) is fixedly connected to the outside of the left and right sides of the protective box (110). The connecting seat (180) is fixedly connected to the fixed seat (170) by bolts and nuts.

3. The travel sensor protection device according to claim 2, characterized in that, The protective box (110) includes a front box body (111), a sealing plate (112), and a rear mounting plate (113). The top and bottom of the front box body (111) are sealed by two sealing plates (112). The rear mounting plate (113) is fixedly connected to the rear side, top, and bottom of the front box body (111) and the sealing plates (112). The front box body (111), the two sealing plates (112), and the rear mounting plate (113) form a square box body. The mounting hole (120) is opened on the rear mounting plate (113).

4. The travel sensor protection device according to claim 2, characterized in that, The rear sealing mounting component (130) includes a rear seat plate (131) and a bending seat (132). The bending seat (132) is fixedly connected to the inner side of the rear seat plate (131). The stroke sensor (200) is fixedly connected to the bending seat (132). The bending seat (132) passes through the mounting hole (120). The rear seat plate (131) is pressed and fixed to the rear side of the protective box (110) by bolts.

5. The travel sensor protection device according to claim 2, characterized in that, The internal actuation mechanism (300) includes a through-chamber sealing shaft (310), an inner connecting cylinder (320), an outer connecting cylinder (330), an inner actuation rod (350), an actuation plate (360), a tension spring (370), and a second hanging ring (380). The through-chamber sealing shaft (310) rotatably passes through the through-chamber cylinder (150). The inner connecting cylinder (320) is fixedly sleeved on one end of the through-chamber sealing shaft (310) located inside the protective box (110). The inner actuation rod (350) is fixedly connected to the outside of the inner connecting cylinder (320). The inner actuation rod (350) can swing between the two limiting rods (160). The actuation plate (360) is fixedly connected to... The inner side wall of the inner toggle lever (350) is attached to the upper inner side wall. As the toggle plate (360) swings, the toggle plate (360) can press against the roller driven by the stroke sensor (200). The second hanging ring (380) is fixedly connected to the outer wall of the inner toggle lever (350). One end of the tension spring (370) is attached to the second hanging ring (380), and the other end of the tension spring (370) is attached to the first hanging ring (140). The outer connecting cylinder (330) is fixedly sleeved on the end of the through-chamber sealing shaft (310) located outside the protective box (110). The lower end of the external lever assembly (400) is fixedly sleeved on the outer connecting cylinder (330).

6. The travel sensor protection device according to claim 5, characterized in that, The through-chamber sealing shaft (310) is provided with an annular sealing groove, and a sealing ring (340) is sleeved on the annular sealing groove. The sealing ring (340) is compressed and sealed to the through-chamber cylinder (150) by elastic deformation.

7. The travel sensor protection device according to claim 5, characterized in that, The through-chamber sealing shaft (310) includes a through-chamber shaft (311), an inner limiting ring (312), a flat key (313), and an elastic retaining ring (314). The inner limiting ring (312) is fixedly connected to one end of the through-chamber shaft (311) located inside the protective box (110). The inner connecting cylinder (320) is connected to the through-chamber shaft (311) via the flat key (313). The inner limiting ring (312) blocks the inner connecting cylinder (320). The elastic retaining ring (314) is elastically deformed and sleeved on one end of the through-chamber shaft (311) located outside the protective box (110). The outer connecting cylinder (330) is also connected to the through-chamber shaft (311) via the flat key (313). The elastic retaining ring (314) blocks the outer connecting cylinder (330).

8. The travel sensor protection device according to claim 1, characterized in that, The external lever assembly (400) includes a swing lever frame (410) and a swing wheel (420). The swing wheel (420) is located at the top of the swing lever frame (410), and the lower end of the swing lever frame (410) is fixedly sleeved on one end of the internal actuating mechanism (300) extending out of the protective box assembly (100).

9. The travel sensor protection device according to claim 8, characterized in that, The swing lever frame (410) is provided with a reinforcing rib (450) on the outside. A connecting bolt rod (430) is inserted into the top of the swing lever frame (410). The connecting bolt rod (430) passes through the swing wheel (420). One end of the connecting bolt rod (430) that passes through the swing wheel (420) is threaded with a clamping nut (440). The clamping nut (440) clamps the swing wheel (420).

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