Sensor lateral protection device
By designing an adjustable sensor lateral protection device, the problem of sensor protection devices being unable to adapt to different sizes was solved, enabling flexible installation and quick replacement of sensors, thus improving installation efficiency and system reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-03
AI Technical Summary
Existing sensor protection devices cannot be flexibly adjusted in size, resulting in an inability to adapt to sensors of different sizes. This increases procurement costs and installation difficulty, affecting installation efficiency and sensor lifespan.
A sensor lateral protection device comprising a hollow cylinder and a motor drive was designed. The adjustability of the protection device is achieved through a gear transmission system, allowing the sensor to be accurately installed in different installation positions and under space constraints. The device is also convenient for replacement and maintenance through the housing door assembly.
This enables flexible installation and rapid replacement of sensors, reduces maintenance and replacement time, improves installation efficiency and system reliability, and extends the service life of sensors.
Smart Images

Figure CN223966092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sensor protection, and in particular to a sensor lateral protection device. Background Technology
[0002] A sensor lateral protection device is a device or structure used to protect sensors from damage caused by various factors in the lateral direction, ensuring that the sensors can work normally and stably. It prevents mechanical damage to the sensors from collisions, scratches, and squeezing by external objects. For some sensors that are susceptible to electromagnetic interference, such as capacitive and inductive sensors, lateral protection devices can use metal shields or conductive coatings to block external electromagnetic signals from interfering with the sensors, ensuring the accuracy and stability of sensor measurements.
[0003] In practical applications, sensor lateral protection devices are essential because sensors come in a variety of sizes. Adjustable, fixed-size protection devices can be flexibly adjusted to fit various sensor sizes, improving the versatility and applicability of the protection device. This avoids the need for custom-made protection devices for different sensor sizes, reducing costs. Adjustable protection devices can be tailored to the specific dimensions of the sensor on-site, eliminating the need for time-consuming model searches or complex installation adaptations required with fixed-size protection devices. This saves installation time and labor costs, improving overall installation efficiency. By adjusting the size of the protection device, it can fit snugly against the sensor without gaps, providing more uniform and stable support and protection in the lateral direction. Whether preventing collisions with external objects or resisting the effects of electromagnetic interference, dust, moisture, and other environmental factors, it provides better protection, reducing the possibility of sensor malfunction or damage due to lateral interference and extending the sensor's lifespan.
[0004] Sensor protection devices for sensors vary in size between different manufacturers of the same type, and even between different series of sensors from the same manufacturer. Fixed-size, non-adjustable protection devices can only fit sensors of a specific size, making them unusable for other sizes. This significantly limits sensor selection in practical applications, increasing procurement costs and management complexity. Because the protection device's size is fixed, precise matching of the sensor size is required during installation, demanding high technical skills from installers and requiring more time and effort for installation and debugging, thus reducing installation efficiency. In certain special installation environments, such as confined spaces or irregularly shaped locations, fixed-size, non-adjustable protection devices may not be able to be installed smoothly, or may interfere with the normal operation of the sensor, or even cause interference between the protection device and surrounding components. If the size of the protection device does not precisely match the sensor, gaps or excessive tightness may occur. Gaps prevent the sensor from receiving tight lateral protection, allowing external objects to impact the sensor, or allowing dust and moisture to enter, affecting sensor performance. Excessive tightness may exert additional pressure on the sensor, causing deformation, affecting measurement accuracy, or even damaging the sensor. Therefore, a sensor lateral protection device is proposed to address these issues. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a sensor lateral protection device, which aims to improve the problems of existing technology that restricts sensor types, makes it difficult to cope with design changes, and has high maintenance costs.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A sensor lateral protection device includes a hollow cylinder. A motor is fixedly connected to the bottom inner wall of the hollow cylinder. A gear is fixedly connected to the drive end of the motor. A circular plate is fixedly connected inside the hollow cylinder. An internal gear is rotatably connected to the inner wall of the hollow cylinder. Multiple gears are equidistantly arranged at the top of the circular plate. Multiple sliders are slidably connected to the top of each of the circular plate. A rack is fixedly connected to the top of each of the sliders. A connecting rod is fixedly connected inside each of the sliders. A limit block is fixedly connected to the bottom end of each of the connecting rods. A box door assembly for single-sided opening is fixedly connected inside the hollow cylinder.
[0008] As a further description of the above technical solution:
[0009] The cabinet door assembly includes a square-hole disc, the outer side of which is fixedly connected to the interior of a hollow cylinder. A second motor is fixedly connected to the top of the square-hole disc. Two fixing plates are fixedly connected to the upper and lower sides of the inner wall of the hollow cylinder. A connecting rod is rotatably connected inside the two fixing plates. A gear is fixedly connected to the bottom of the inner wall of the connecting rod. Two connecting rings are rotatably connected to the upper and lower sides of the outer wall of the connecting rod. A connecting rod is fixedly connected to the outer wall of each of the two connecting rings. A support rod is fixedly connected inside each of the two connecting rods. A connecting ring is fixedly connected to one end of each of the two connecting rods. A fixing rod is rotatably connected inside each of the two connecting rings. Connecting plates are fixedly connected to both ends of the fixing rod. A fixing block is fixedly connected to the inner wall of the hollow cylinder. A connecting plate is rotatably connected to the bottom of the fixing block. A fixing block is rotatably connected to the opposite side of the connecting plate. A sliding door is fixedly connected to the bottom of the fixing block.
[0010] As a further description of the above technical solution:
[0011] The bottom end of the internal gear is rotatably connected to the top end of the circular plate, and the outer walls of the plurality of connecting rods are slidably connected to the inside of the circular plate.
[0012] As a further description of the above technical solution:
[0013] The external teeth of gear one are meshed with the internal teeth of the internal gear; the external teeth of gear two are meshed with the external teeth of the rack; and the external teeth of gear three are meshed with the external teeth of gear four.
[0014] As a further description of the above technical solution:
[0015] The bottom ends of the plurality of gears are rotatably connected to the top end of the circular plate, and the bottom ends of the plurality of sliders are slidably connected to the top end of the circular plate;
[0016] As a further description of the above technical solution:
[0017] The top ends of the plurality of limiting blocks are slidably connected to the bottom end of the circular plate, and the outer side of the movable door is slidably connected to the inside of the hollow cylinder;
[0018] As a further description of the above technical solution:
[0019] The outer side of one top of the motor is fixed to the inside of the top of the circular plate, and the front end of one top of the connecting plate is fixedly connected to the rear end of the top of the movable door.
[0020] As a further description of the above technical solution:
[0021] The bottom end of the second connecting rod is rotatably connected to the top end of the square hole disc, and the bottom end of the movable door is slidably connected to the top end of the square hole disc.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the slider is fixed by the rotation of motor one. The adjustable lateral protection device can flexibly adjust the fixing angle and position according to the specific installation location and space constraints, ensuring that the sensor can be accurately installed in the appropriate position. This avoids the problem of installation failure due to insufficient space or special location. When the sensor needs maintenance, repair, or calibration, the adjustable protection device can be easily opened or adjusted, allowing personnel to easily access the sensor and perform related operations without disassembling the complex fixing structure or damaging the protection device, saving maintenance time and costs. For example, when performing periodic calibration of the temperature sensor, simply loosen the fixing bolts of the protection device, remove the sensor for calibration, and then re-fix it; the operation is simple and quick.
[0024] 2. In this utility model, the connecting rod two is rotated by the output of motor two. There is no need to disassemble the entire sensor system or related equipment. The side protection device can be directly accessed and replaced simply by opening the housing door. This greatly shortens the replacement time, reduces equipment downtime, and improves production efficiency. Timely replacement of damaged protection devices can prevent the fault from escalating further and avoid sensor failure caused by protection device failure, which could lead to a chain reaction of failures in other related equipment or systems. When the sensor side protection device fails or is damaged, it can be replaced in time through the housing door, ensuring that the sensor is always in a good protected state and improving the reliability and stability of the entire system. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of a sensor lateral protection device proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the square-hole disc of a sensor lateral protection device proposed in this utility model;
[0027] Figure 3 This is a schematic diagram of the slider of a sensor lateral protection device proposed in this utility model;
[0028] Figure 4 This is a schematic diagram of the connecting rod of a sensor lateral protection device proposed in this utility model.
[0029] Legend:
[0030] 1. Hollow cylinder; 2. Motor 1; 3. Gear 1; 4. Circular plate; 5. Internal gear; 6. Gear 2; 7. Slider; 8. Rack; 9. Connecting rod 1; 10. Limiting block; 11. Motor 2; 12. Gear 3; 13. Fixing plate 1; 14. Connecting rod 2; 15. Gear 4; 16. Connecting ring 1; 17. Connecting rod 3; 18. Support rod; 19. Connecting ring 2; 20. Fixing rod; 21. Connecting plate 1; 22. Fixing block 1; 23. Connecting plate 2; 24. Fixing block 2; 25. Sliding door; 26. Square hole disc. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Reference Figures 1 to 3 One embodiment of this utility model provides a sensor lateral protection device, including a hollow cylinder 1. The hollow cylinder 1 provides space and stability for subsequent installation. A motor 2 is fixedly connected to the bottom inner wall of the hollow cylinder 1. The motor 2 is a drive source that drives the subsequent components to rotate. A gear 3 is fixedly connected to the drive end of the motor 2. When the motor 2 rotates, it drives the gear 3 to rotate synchronously. A circular plate 4 is fixedly connected inside the hollow cylinder 1. The circular plate 4 provides installation space for the subsequent components. An internal gear 5 is rotatably connected to the inner wall of the hollow cylinder 1. The hollow cylinder 1 provides a limiting function for the internal gear 5, so that it does not shake when rotating.
[0033] Multiple gears 6 are evenly spaced at the top of the circular plate 4. These gears 6 rotate in cooperation with other components. Multiple sliders 7 are slidably connected to the top of the circular plate 4. The sliders 7 are adjustable and fixed in cooperation with the gears 6. A rack 8 is fixedly connected to the top of each slider 7. The teeth of the rack 8 mesh with the teeth of the gears 6. When the gears 6 rotate, they drive the rack 8 to move. A connecting rod 9 is fixedly connected inside each slider 7. The connecting rod 9 is connected to the circular plate 4 and provides a limiting effect when the slider 7 moves. A limit block 10 is fixedly connected to the bottom of each connecting rod 9. The limit block 10 provides stability and limiting effect when the connecting rod 9 moves. A box door assembly for single-sided opening is fixedly connected inside the hollow cylinder 1. This assembly facilitates the replacement of sensors.
[0034] Reference Figures 2 to 4The enclosure door assembly includes a square-hole disc 26. The square-hole disc 26 has square holes inside to facilitate the insertion or replacement of sensors. The outer side of the square-hole disc 26 is fixedly connected to the inside of the hollow cylinder 1. The hollow cylinder 1 provides stability for the square-hole disc 26 and provides a stable installation space for subsequent components. A motor 21 is fixedly connected to the top of the square-hole disc 26. The motor 211 is the drive source to drive the rotation of other components. A gear 3 12 is fixedly connected to the drive end of the motor 21. When the motor 21 rotates, it drives the gear 3 12 to rotate. Two fixing plates 13 are fixedly connected to the upper and lower sides of the inner wall of the hollow cylinder 1. A connecting rod 2 14 is rotatably connected inside the two fixing plates 13. The fixing plates 13 provide stability for the connecting rod 2 14 and also provide a limiting effect.
[0035] Gear 4 15 is fixedly connected to the bottom of the inner wall of connecting rod 2 14. Gear 4 15 rotates synchronously with gear 3 12, causing connecting rod 2 14 to rotate. Two connecting rings 1 16 are rotatably connected to the upper and lower sides of the outer wall of connecting rod 2 14. Connecting rod 2 14 provides a limiting effect for connecting rings 1 16. Connecting rod 3 17 is fixedly connected to the outer wall of each of the two connecting rings 1 16. When connecting rings 1 16 rotate, they drive connecting rod 3 17 to rotate. Support rods 18 are fixedly connected inside the two connecting rods 3 17. Support rods 18 provide stability when connecting rods 3 17 rotate. Connecting ring 2 19 is fixedly connected to one end of each of the two connecting rods 3 17. When connecting rod 3 17 moves, it drives connecting ring 2 19 to move. Fixed rods 20 are rotatably connected inside the two connecting rings 2 19. Connecting plates 1 21 are fixedly connected to both ends of fixed rods 20.
[0036] The fixed rod 20 is connected to the connecting plate 1 21. When the connecting rod 3 17 moves, it will drive the fixed rod 20 to move. The inner wall of the hollow cylinder 1 is fixedly connected to the fixed block 1 22. The hollow cylinder 1 provides stability for the fixed block 1 22. The bottom end of the fixed block 1 22 is rotatably connected to the connecting plate 23. The fixed block 1 22 provides stability when the connecting plate 23 rotates. The opposite side of the connecting plate 23 is rotatably connected to the fixed block 24. The bottom end of the fixed block 24 is fixedly connected to the sliding door 25. When the sliding door 25 moves, the connecting plate 23 and the fixed block 24 make the sliding door 25 achieve horizontal displacement.
[0037] Reference Figures 2 to 4The bottom end of the internal gear 5 is rotatably connected to the top end of the circular plate 4. The circular plate 4 provides installation space and a limiting effect for the internal gear 5. The outer walls of multiple connecting rods 9 are slidably connected to the inside of the circular plate 4. The inside of the circular plate 4 has a sliding groove, and the connecting rods 9 achieve a limiting effect when moving. The outer teeth of gear 3 are meshed with the inner teeth of the internal gear 5. When gear 3 rotates, it will drive the internal gear 5 to rotate. The outer teeth of gear 2 6 are meshed with the outer teeth of the rack 8. Gear 2 6 drives the rack 8 to move under the rotation of the internal gear 5. The outer teeth of gear 3 12 are meshed with the outer teeth of gear 4 15. When gear 3 12 rotates, it drives gear 4 15 to rotate.
[0038] The bottom ends of multiple gears 6 are rotatably connected to the top of the circular plate 4, which provides stability and limits the movement of the gears 6. The bottom ends of multiple sliders 7 are slidably connected to the top of the circular plate 4, which provides stable sliding and limits the movement of the sliders 7. The tops of multiple limiting blocks 10 are slidably connected to the bottom of the circular plate 4, which provides stability and limits the movement of the connecting rod 9. The outer side of the sliding door 25 is slidably connected to the inside of the hollow cylinder 1, and the sliding door 25 contacts the hollow cylinder 1 to prevent rainwater and dust from entering. The outer side of the motor 2 is fixed to the circular plate 4. Inside, the circular plate 4 provides stability for the motor 2. The front end of the connecting plate 21 is fixedly connected to the rear end of the sliding door 25. When the connecting rod 17 rotates, it drives the connecting plate 21, which in turn drives the sliding door 25 to move. The bottom end of the connecting rod 14 is rotatably connected to the top end of the square hole disc 26. The square hole disc 26 provides stability for the connecting rod 14 when it rotates, preventing it from shaking. The bottom end of the sliding door 25 is slidably connected to the top end of the square hole disc 26. The bottom of the sliding door 25 contacts the top end of the square hole disc 26 to prevent dust and rainwater from entering.
[0039] Working principle: During operation, motor 2 starts, converting electrical energy into mechanical energy. Its drive end drives gear 3 to rotate. Since gear 3 meshes with internal gear 5, according to the gear transmission principle, the rotation of gear 3 will drive internal gear 5 to rotate circumferentially on the inner wall of the hollow cylinder 1 through the friction between the teeth. At the same time, the rotation of internal gear 5 drives multiple gears 6 to rotate. When multiple gears 6 rotate, they drive rack 8, causing the slider 7 connected to the bottom of rack 8 to slide to achieve an adjustable and fixed effect, so that the square sensor can be disassembled or installed and replaced. The slider 7 is connected to a connecting rod 9 inside. The outer side of the connecting rod 9 moves along the groove opened in the circular plate 4 to achieve a limiting effect. The limiting block 10 connected to the bottom of the connecting rod 9 slides at the bottom of the circular plate 4 to provide a limiting effect when the slider 7 slides.
[0040] When motor 11 starts, it converts electrical energy into mechanical energy, driving gear 12 at the drive end to rotate. Gear 12 meshes with gear 15. The rotation of gear 12 drives gear 15 to rotate, causing connecting rod 14 inside gear 15 to rotate. This, in turn, causes connecting ring 16 on the outer wall of connecting rod 14 to rotate, resulting in the rotation of connecting rod 17 connected to the outside of connecting ring 16. Support rod 18 is fixed inside the two connecting rods 17, ensuring coordinated and stable movement of the two connecting rods 17. The connecting ring at one end of connecting rod 17... The second 19 also moves and can rotate flexibly around the fixed rod 20. The connecting plates 21 at both ends of the fixed rod 20 play the role of changing and transmitting the direction of motion during the entire transmission process. The fixed block 22 on the inner wall of the hollow cylinder 1, and the connecting plate 23 rotatably connected to its bottom end, are driven to rotate by the front transmission structure. The fixed block 24 rotatably connected to the other side of the connecting plate 23 transmits the motion to the movable door 25 fixedly connected to its bottom end, so that the movable door 25 completes the opening or closing action on one side along the predetermined track, realizing the function of the box door assembly.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sensor lateral protection device, comprising a hollow cylinder (1), characterized in that: A motor (2) is fixedly connected to the bottom inner wall of the hollow cylinder (1). A gear (3) is fixedly connected to the drive end of the motor (2). A circular plate (4) is fixedly connected inside the hollow cylinder (1). An internal gear (5) is rotatably connected to the inner wall of the hollow cylinder (1). Multiple gears (6) are equidistantly arranged at the top of the circular plate (4). Multiple sliders (7) are slidably connected to the top of the circular plate (4). A rack (8) is fixedly connected to the top of each slider (7). A connecting rod (9) is fixedly connected inside each slider (7). A limit block (10) is fixedly connected to the bottom end of each connecting rod (9). A box door assembly for single-sided opening is fixedly connected inside the hollow cylinder (1).
2. The sensor lateral protection device according to claim 1, characterized in that: The box door assembly includes a square-hole disc (26), the outer side of which is fixedly connected to the inside of the hollow cylinder (1). A second motor (11) is fixedly connected to the top of the square-hole disc (26), and a third gear (12) is fixedly connected to the drive end of the second motor (11). Two fixing plates (13) are fixedly connected to the upper and lower sides of the inner wall of the hollow cylinder (1). A connecting rod (14) is rotatably connected inside the two fixing plates (13). A fourth gear (15) is fixedly connected to the bottom of the inner wall of the connecting rod (14). Two connecting rings (16) are rotatably connected to the upper and lower sides of the outer wall of the connecting rod (14). 6) The outer wall is fixedly connected with connecting rod three (17), and the two connecting rod three (17) are fixedly connected with support rod (18). One end of the two connecting rod three (17) is fixedly connected with connecting ring two (19). The two connecting ring two (19) are rotatably connected with fixing rod (20). The two ends of the fixing rod (20) are fixedly connected with connecting plate one (21). The inner wall of the hollow cylinder (1) is fixedly connected with fixing block one (22). The bottom end of the fixing block one (22) is rotatably connected with connecting plate two (23). The opposite side of the connecting plate two (23) is rotatably connected with fixing block two (24). The bottom end of the fixing block two (24) is fixedly connected with a moving door (25).
3. The sensor lateral protection device according to claim 1, characterized in that: The bottom end of the internal gear (5) is rotatably connected to the top end of the circular plate (4), and the outer walls of the plurality of connecting rods (9) are slidably connected to the inside of the circular plate (4).
4. A sensor lateral protection device according to claim 2, characterized in that: The external teeth of gear one (3) are meshed with the internal teeth of the internal gear (5), the external teeth of gear two (6) are meshed with the external teeth of the rack (8), and the external teeth of gear three (12) are meshed with the external teeth of gear four (15).
5. A sensor lateral protection device according to claim 1, characterized in that: The bottom ends of the multiple gears (6) are rotatably connected to the top end of the circular plate (4), and the bottom ends of the multiple sliders (7) are slidably connected to the top end of the circular plate (4).
6. A sensor lateral protection device according to claim 2, characterized in that: The top ends of the plurality of limiting blocks (10) are slidably connected to the bottom end of the circular plate (4), and the outer side of the movable door (25) is slidably connected to the inside of the hollow cylinder (1).
7. A sensor lateral protection device according to claim 2, characterized in that: The outer side of the motor (2) is fixed inside the circular plate (4), and the front end of the connecting plate (21) is fixedly connected to the rear end of the movable door (25).
8. A sensor lateral protection device according to claim 2, characterized in that: The bottom end of the connecting rod 2 (14) is rotatably connected to the top end of the square hole disc (26), and the bottom end of the movable door (25) is slidably connected to the top end of the square hole disc (26).