Built-in high-thermal-conductivity 5G communication module and assembling method thereof
By designing the combination of arc-shaped heat dissipation fins and cleaning columns in the built-in high-thermal conductivity 5G communication module, the linkage of the water-absorbing plate and the positioning plate is used to realize the function of automatically cleaning the heat dissipation fins on rainy days, solving the problem of dust and impurities affecting heat dissipation, and improving the heat dissipation effect and stability of the module.
Patent Information
- Application Number
- CN202411904822.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-04-22
AI Technical Summary
The existing built-in high-thermal conductivity 5G communication module installed outdoors dissipate heat through external heat dissipation fins. After long-term use, dust and impurities will adhere to the outside of the heat dissipation fins, affecting the heat dissipation effect.
A built-in high-thermal conductivity 5G communication module and its assembly method are designed, and arc-shaped heat dissipation fins are used to match the cleaning column. The water-absorbing plate is used to drive the positioning plate to rotate in rainy days, and the cleaning column is driven to clean the arc-shaped heat dissipation fins. The cleaning column improves the cleaning effect during the rotation.
It effectively cleans the dust and impurities on the surface of the arc-shaped heat dissipation fins, improves the heat dissipation effect, ensures the efficient and stable operation of the module, and does not require external power, reducing production and use costs.
Smart Images
Figure CN119865996A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of 5G communication modules, and specifically to a built-in high thermal conductivity 5G communication module and an assembly method thereof. Background Art
[0002] The built-in high thermal conductivity 5G communication module is a module designed for 5G communication equipment. It integrates materials and technologies with high thermal conductivity to solve the heat problem generated by 5G equipment at high frequency, big data processing and high power output. This module usually includes a shell, and a ceramic heat conduction plate is arranged in the shell. The upper heat dissipation cavity and the lower heat dissipation cavity are formed by the ceramic heat conduction plate to achieve efficient thermal management. The ceramic heat conducting plate is used to quickly conduct heat due to its high thermal conductivity. At the same time, the module may also contain air-cooling and water-cooling heat dissipation mechanisms to achieve dual air-cooling heat dissipation treatment and water-cooling circulation heat dissipation treatment, effectively reducing the temperature of the 5G communication module body, improving the heat dissipation effect, and ensuring the efficient and stable operation of the communication module; The existing built-in high thermal conductivity 5G communication module installed outdoors for use dissipates heat through external heat sink fins. After long-term use, dust and impurities are attached to the outside of the heat sink fins, which affects the heat dissipation effect of the heat sink fins and further affects the overall heat dissipation of the 5G communication module. Therefore, in order to solve the above problem, a built-in high thermal conductivity 5G communication module and an assembly method thereof are proposed. Summary of the invention
[0003] The purpose of the present invention is to provide a built-in high thermal conductivity 5G communication module and an assembly method thereof, so as to solve the problem that the existing built-in high thermal conductivity 5G communication module installed outdoors for use dissipates heat through external heat dissipation fins. After long-term use, dust and impurities are attached to the outside of the heat dissipation fins, which affects the heat dissipation effect of the heat dissipation fins and further affects the overall heat dissipation of the 5G communication module.
[0004] To achieve the above object, the present invention provides the following technical solutions: A built-in high-thermal-conductivity 5G communication module and an assembly method thereof, comprising a module body and an arc-shaped heat dissipation fin, wherein the upper end of the module body is fixedly connected with an arc-shaped heat dissipation fin, the middle of the upper end of the module body is connected to a driving mechanism, a positioning mechanism is installed at the lower end of the driving mechanism, cleaning columns are installed at the lower ends of both sides of the positioning mechanism, a linkage is installed at one side of the lower end of the positioning mechanism, the linkage is installed in a groove opened on the inner side of the upper end of the module body, one end of the linkage is fixedly connected to a water absorption plate, and a reset mechanism is installed at the lower side of one end of the linkage; the driving mechanism comprises a cover shell, one end of the inner side of the cover shell is slidably connected with a slide plate, the other end of the slide plate is fixedly connected to a tooth plate, the other side of the tooth plate is meshed with a first gear, and the tooth plate is engaged with a first gear. The side is connected to the inner wall of the cover shell through a spring telescopic rod, and the other side of the tooth plate is fixedly connected to the pull rope, a guide column is provided on one side of the pull rope, and the other end of the pull rope is fixedly connected to the fixed shaft, and the linkage comprises a square rod, a first tooth groove is provided on one side of the square rod, and a second tooth groove is provided at the lower end of the other side of the square rod; the reset mechanism comprises a fixed shell, the inner side of the fixed shell is rotatably connected with a rotating shaft through a clockwork spring, and the end of the rotating shaft exposed to the outside of the fixed shell is fixedly connected with the second gear, and the positioning mechanism comprises a positioning plate, mounting holes are provided on the inner sides of both ends of the positioning plate, a center hole is provided in the middle of the positioning plate, a bearing is fixedly connected to the inside of the middle lower end protrusion of the positioning plate, and a gear ring is fixedly connected to the bottom end of the middle lower end protrusion of the positioning plate.
[0005] As a further optimized content of the present invention, wherein: the groove is opened on the inner side of the upper end of the module body, a guide block is fixedly connected to one end of the inner part of the groove, and the guide block is slidably connected to the square rod.
[0006] As further optimized content of the present invention, the bottom end of the cover shell is fixedly connected to the positioning plate, the vertical section of the cover shell is U-shaped, two guide columns are provided, the guide columns are parallel to each other, an annular groove is opened at the upper end of the guide column, the guide column is connected to the pull rope through the annular groove, and the bottom end of the guide column is fixedly connected to the positioning plate.
[0007] As a further optimization of the present invention, there are multiple first gears, the bottom end of the first gear is fixedly connected to the cleaning column, the upper end of the cleaning column is rotatably connected to the positioning plate through the mounting hole, the first gear and the cleaning column correspond one to one, and the cleaning column is arranged at the lower end of the positioning plate.
[0008] As a further optimization of the present invention, the outer side of the lower end of the fixed shaft is rotatably connected to the positioning plate through a bearing, the fixed shaft is arranged inside the center hole, and the fixed shaft and the center hole have the same axis.
[0009] As a further optimization of the present invention, the fixed shell is fixedly connected to the module body, the fixed shell is arranged at the lower end of one side of the groove, and the second gear is meshed with the square rod through the second tooth groove.
[0010] As a further optimization of the present invention, the square rod is meshed with the gear ring through the first tooth groove, the gear ring is arranged inside the groove, and the gear ring and the center hole have the same axis.
[0011] As a further optimization of the present invention, the vertical projections of the cover shell and the positioning plate are equal in size, and the distance between the top of the positioning plate and the top of the arc-shaped heat dissipating fin is 1 cm.
[0012] As a further optimization of the present invention, the water absorption plate is parallel to one of the side surfaces of the module body, the angle between the water absorption plate and the square rod is 90°, and the interior of the water absorption plate is filled with water-absorbing sponge.
[0013] As a further optimized content of the present invention, the following steps are included: Step I: Module body installation: The module body is installed at a position required by the outside world. After the installation is completed, the water absorption plate is at the lowest position and exposed to the outside; Step II: When it rains, the water absorbent plate is wetted by rain: When it rains, the water absorbent plate is wetted, and the weight of the water absorbent plate increases. At this time, the water absorbent plate will pull the square rod downward. When the square rod moves downward, it drives the gear ring to rotate, and then drives the center plate to rotate. When the center plate rotates, it drives the cleaning column to pass through the arc-shaped heat dissipation fins; Step III: The cleaning column cleans the surface of the arc-shaped heat dissipation fins: The cleaning column passes between the arc-shaped heat dissipation fins. During the cleaning process of the arc-shaped heat dissipation fins, the top end of the fixed shaft pulls the pull rope, thereby driving the tooth plate to move. During the movement of the tooth plate, the first gear is driven to rotate, thereby causing the cleaning column to rotate when passing between the arc-shaped heat dissipation fins, so as to improve the cleaning effect on the surface of the arc-shaped heat dissipation fins; Step IV: When the weather is fine, the water inside the water absorption plate evaporates and the water absorption plate is reset: after the water inside the water absorption plate evaporates, the clockwork spring drives the second gear to rotate through the rotating shaft, and the second gear drives the square rod to reset. At this time, the positioning plate is also reset, and the toothed plate is synchronously reset under the drive of the spring telescopic rod to achieve the reset of the entire device.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the arc-shaped heat dissipating fins are matched with the cleaning column. On rainy days, the water absorption plate is used for counterweighting, so that the positioning plate can be driven to rotate, thereby driving the cleaning column to clean the inside of the arc-shaped heat dissipating fins. During the cleaning process, the first gear is driven to rotate by the rotation of the positioning plate, so that the cleaning column can rotate during the cleaning of the arc-shaped heat dissipating fins, thereby further improving the cleaning effect, effectively cleaning the dust and impurities outside the arc-shaped heat dissipating fins, and ensuring the heat dissipation effect of the module; 2. In the present invention, the linkage between multiple mechanisms can be realized through the provided linkage device, and the linkage stability is relatively high. At the same time, the provided reset mechanism can be used to reset the cleaning-related mechanisms after the arc-shaped heat dissipating fins are cleaned, and at the same time has a certain positioning effect; 3. In the present invention, the device as a whole cleans the arc-shaped heat dissipating fins without external power, thereby reducing production costs and use costs. At the same time, cleaning on rainy days can help cooperate with rainwater to further improve the cleaning effect. When used in rainy tropical rainforest areas, it can improve the overall operating stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cover shell of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle; Figure 4 For the present invention Figure 2 Schematic diagram of the structure at B in the middle; Figure 5 For the present invention Figure 2 Schematic diagram of the structure at C in the middle; Figure 6 For the present invention Figure 2 Schematic diagram of the structure at D in the middle; Figure 7 It is a schematic diagram of the structure of the reset mechanism of the present invention; Figure 8 It is a schematic diagram of the positioning mechanism structure of the present invention.
[0016] In the figure: 1. Module body; 2. Water absorption plate; 3. Curved heat dissipation fins; 4. driving mechanism; 41. cover; 42. tooth plate; 43. slide plate; 44. first gear; 45. guide column; 46. pull rope; 47. fixed shaft; 48. spring telescopic rod; 5. linkage; 51. square rod; 52. first tooth groove; 53. second tooth groove; 6. reset mechanism; 61. fixed housing; 62. spring; 63. rotating shaft; 64. second gear; 7. Cleaning column; 8. Positioning mechanism; 81. Positioning plate; 82. Mounting hole; 83. Center hole; 84. Bearing; 85. Gear ring; 9. Groove; 10. Guide block. DETAILED DESCRIPTION
[0017] See also Figure 1-8 , the present invention provides a technical solution: A built-in high thermal conductivity 5G communication module and an assembly method thereof, comprising a module body 1 and an arc-shaped heat dissipation fin 3, wherein the upper end of the module body 1 is fixedly connected with the arc-shaped heat dissipation fin 3, the middle of the upper end of the module body 1 is connected with a driving mechanism 4, a positioning mechanism 8 is installed at the lower end of the driving mechanism 4, cleaning columns 7 are installed at the lower ends of both sides of the positioning mechanism 8, a linkage 5 is installed at one side of the lower end of the positioning mechanism 8, the linkage 5 is installed inside a groove 9 opened on the inner side of the upper end of the module body 1, one end of the linkage 5 is fixedly connected with the water absorption plate 2, and a reset mechanism 6 is installed at the lower side of one end of the linkage 5; the driving mechanism 4 comprises a cover shell 41, one end of the inner side of the cover shell 41 is slidably connected with a slide plate 43, the other end of the slide plate 43 is fixedly connected with a tooth plate 42, the other side of the tooth plate 42 is meshed with a first gear 44, and one side of the tooth plate 42 is connected to the cover shell through a spring telescopic rod 48 The inner wall of the shell 41 is connected, the other side of the tooth plate 42 is fixedly connected to the pull rope 46, a guide column 45 is provided on one side of the pull rope 46, and the other end of the pull rope 46 is fixedly connected to the fixed shaft 47. The linkage 5 includes a square rod 51, a first tooth groove 52 is provided on one side of the square rod 51, and a second tooth groove 53 is provided at the lower end of the other side of the square rod 51; the reset mechanism 6 includes a fixed shell 61, and the inner side of the fixed shell 61 is rotatably connected with a rotating shaft 63 through a spring 62, and the end of the rotating shaft 63 exposed on the outer side of the fixed shell 61 is fixedly connected with a second gear 64, and the positioning mechanism 8 includes a positioning plate 81, and mounting holes 82 are provided on the inner sides of both ends of the positioning plate 81, and a center hole 83 is provided in the middle of the positioning plate 81, and a bearing 84 is fixedly connected inside the middle lower end protrusion of the positioning plate 81, and a gear ring 85 is fixedly connected to the bottom end of the middle lower end protrusion of the positioning plate 81.
[0018] As a further technical solution of this scheme, a groove 9 is provided on the inner side of the upper end of the module body 1, and a guide block 10 is fixedly connected to one end of the groove 9. The guide block 10 is slidably connected to the square rod 51. Through the above arrangement, the square rod 51 can be moved for positioning; As a further technical solution of this solution, the bottom end of the cover shell 41 is fixedly connected to the positioning plate 81, the vertical section of the cover shell 41 is U-shaped, two guide columns 45 are provided, the guide columns 45 are parallel to each other, an annular groove is provided at the upper end of the guide column 45, the guide column 45 is connected to the pull rope 46 through the annular groove, and the bottom end of the guide column 45 is fixedly connected to the positioning plate 81. Through the above arrangement, the bottom of the cover shell 41 can be sealed, and the movement of the pull rope 46 can be positioned at the same time; As a further technical solution of the present invention, a plurality of first gears 44 are provided, the bottom end of the first gear 44 is fixedly connected to the cleaning column 7, the upper end of the cleaning column 7 is rotatably connected to the positioning plate 81 through the mounting hole 82, the first gear 44 and the cleaning column 7 correspond one to one, and the cleaning column 7 is arranged at the lower end of the positioning plate 81. Through the above arrangement, a plurality of arc-shaped heat dissipating fins 3 can be cleaned at the same time; As a further technical solution of this solution, the outer side of the lower end of the fixed shaft 47 is rotatably connected to the positioning plate 81 through a bearing 84, and the fixed shaft 47 is arranged inside the center hole 83. The fixed shaft 47 and the center hole 83 have the same axis. Through the above arrangement, the stability of the positioning plate 81 during rotation can be further improved; As a further technical solution of the present invention, the fixed shell 61 is fixedly connected to the module body 1, and the fixed shell 61 is arranged at the lower end of one side of the groove 9. The second gear 64 is meshed with the square rod 51 through the second tooth groove 53. Through the above arrangement, the second gear 64 can be used to drive the square rod 51 to reset; As a further technical solution of this solution, the square rod 51 is meshed with the ring gear 85 through the first tooth groove 52, and the ring gear 85 is arranged inside the groove 9. The ring gear 85 and the center hole 83 have the same axis. Through the above arrangement, the stability of the square rod 51 in the process of driving the positioning plate 81 to rotate can be improved; As a further technical solution of this solution, the vertical projections of the housing 41 and the positioning plate 81 are equal in size, and the distance between the top of the positioning plate 81 and the top of the arc-shaped heat dissipating fin 3 is 1 cm, which can prevent the positioning plate 81 from interfering with the arc-shaped heat dissipating fin 3 during rotation; As a further technical solution for implementing this scheme, the water absorption plate 2 is parallel to one of the side surfaces of the module body 1, and the angle between the water absorption plate 2 and the square rod 51 is 90°. The inside of the water absorption plate 2 is filled with water-absorbing sponge. Through the above arrangement, after the water absorption plate 2 is wet, the square rod 51 can be driven to move in the desired direction; As a technical solution for further implementing the present scheme, the following steps are included: Step I: Installation of the module body 1: Install the module body 1 at a location required by the outside world. After the installation is completed, the water absorption plate 2 is at the lowest position and exposed to the outside; Step II: When it rains, the water absorption plate 2 is wetted by rainwater: When it rains, the water absorption plate 2 is wetted, and the weight of the water absorption plate 2 increases. At this time, the water absorption plate 2 will pull the square rod 51 to move downward. When the square rod 51 moves downward, it drives the gear ring 85 to rotate, and then drives the center plate 81 to rotate. When the center plate 81 rotates, it drives the cleaning column 7 to pass through the arc-shaped heat dissipation fins 3; Step III: The cleaning column 7 cleans the surface of the arc-shaped heat dissipating fins 3: The cleaning column 7 passes between the arc-shaped heat dissipating fins 3. During the cleaning process of the arc-shaped heat dissipating fins 3, the top end of the fixed shaft 47 pulls the pull rope 46, thereby driving the tooth plate 42 to move. During the movement of the tooth plate 42, the first gear 44 is driven to rotate, thereby causing the cleaning column 7 to rotate when passing between the arc-shaped heat dissipating fins 3, so as to improve the cleaning effect on the surface of the arc-shaped heat dissipating fins 3; Step IV: When the weather is fine, the water inside the water absorption plate 2 evaporates, and the water absorption plate 2 is reset: after the water inside the water absorption plate 2 evaporates, the clockwork spring 62 drives the second gear 64 to rotate through the rotating shaft 63, and the second gear 64 drives the square rod 51 to reset. At this time, the positioning plate 81 is also reset, and the toothed plate 42 is synchronously reset under the drive of the spring telescopic rod 48 to achieve the reset of the entire device.
[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.
Claims
1. A built-in high thermal conductivity 5G communication module, comprising a module body (1) and arc-shaped heat dissipation fins (3), characterized in that: The upper end of the module body (1) is fixedly connected with an arc-shaped heat dissipation fin (3); the middle of the upper end of the module body (1) is connected to the driving mechanism (4); the lower end of the driving mechanism (4) is equipped with a positioning mechanism (8); the lower ends of both sides of the positioning mechanism (8) are equipped with cleaning columns (7); one side of the lower end of the positioning mechanism (8) is equipped with a linkage (5); the linkage (5) is installed in a groove (9) provided on the inner side of the upper end of the module body (1); one end of the linkage (5) is fixedly connected to the water absorption plate (2); and a reset mechanism (6) is installed on the lower side of one end of the linkage (5); The driving mechanism (4) comprises a housing (41), one end of the inner side of the housing (41) is slidably connected to a slide plate (43), the other end of the slide plate (43) is fixedly connected to a tooth plate (42), the other side of the tooth plate (42) is meshed with a first gear (44), one side of the tooth plate (42) is connected to the inner wall of the housing (41) via a spring telescopic rod (48), the other side of the tooth plate (42) is fixedly connected to a pull rope (46), one side of the pull rope (46) is provided with a guide column (45), the other end of the pull rope (46) is fixedly connected to a fixed shaft (47), and the linkage (5) comprises a square rod (51), one side of the square rod (51) is provided with a first tooth groove (52), and the lower end of the other side of the square rod (51) is provided with a second tooth groove (53); The reset mechanism (6) comprises a fixed shell (61), the inner side of the fixed shell (61) is rotatably connected to a rotating shaft (63) via a spring spring (62), one end of the rotating shaft (63) exposed outside the fixed shell (61) is fixedly connected to a second gear (64), the positioning mechanism (8) comprises a positioning plate (81), both ends of the positioning plate (81) are provided with mounting holes (82) on the inner sides, a center hole (83) is provided in the middle of the positioning plate (81), a bearing (84) is fixedly connected to the inner side of a protrusion at the middle lower end of the positioning plate (81), and a gear ring (85) is fixedly connected to the bottom end of the protrusion at the middle lower end of the positioning plate (81).
2. A built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: The groove (9) is formed on the inner side of the upper end of the module body (1); a guide block (10) is fixedly connected to one end of the groove (9); and the guide block (10) is slidably connected to the square rod (51).
3. A built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: The bottom end of the cover shell (41) is fixedly connected to the positioning plate (81); the vertical section of the cover shell (41) is U-shaped; two guide columns (45) are provided; the guide columns (45) are parallel to each other; an annular groove is formed at the upper end of the guide column (45); the guide column (45) is connected to the pull rope (46) via the annular groove; and the bottom end of the guide column (45) is fixedly connected to the positioning plate (81).
4. A built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: A plurality of first gears (44) are provided, the bottom end of the first gear (44) is fixedly connected to the cleaning column (7), the upper end of the cleaning column (7) is rotatably connected to the positioning plate (81) via the mounting hole (82), the first gears (44) and the cleaning columns (7) correspond one to one, and the cleaning column (7) is arranged at the lower end of the positioning plate (81).
5. The built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: The outer side of the lower end of the fixed shaft (47) is rotatably connected to the positioning plate (81) via a bearing (84); the fixed shaft (47) is arranged inside the center hole (83); and the fixed shaft (47) and the center hole (83) have the same axis.
6. A built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: The fixed shell (61) is fixedly connected to the module body (1); the fixed shell (61) is arranged at the lower end of one side of the groove (9); and the second gear (64) is meshed with the square rod (51) through the second tooth groove (53).
7. A built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: The square rod (51) meshes with the gear ring (85) through the first tooth groove (52); the gear ring (85) is arranged inside the groove (9); the gear ring (85) and the center hole (83) are coaxial.
8. The built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: The vertical projections of the housing (41) and the positioning plate (81) are equal in size, and the distance between the top of the positioning plate (81) and the top of the arc-shaped heat dissipation fin (3) is 1 cm.
9. The built-in high thermal conductivity 5G communication module according to claim 1, characterized in that: The water absorption plate (2) is parallel to one of the side surfaces of the module body (1); the angle formed between the water absorption plate (2) and the square rod (51) is 90°; the interior of the water absorption plate (2) is filled with a water-absorbing sponge.
10. An assembly method for a built-in high thermal conductivity 5G communication module according to any one of claims 1 to 9, characterized in that: The following steps are included :Step I: Installation of the module body (1): Install the module body (1) at a required position outside. After the installation is completed, the water absorption plate (2) is at the lowest position and exposed to the outside; Step II: When it rains, the rainwater wets the water absorption plate (2): When it rains, the water absorption plate (2) is wetted, and the weight of the water absorption plate (2) increases. At this time, the water absorption plate (2) pulls the square rod (51) to move downward. In the process of moving downward, the square rod (51) drives the gear ring (85) to rotate, and then drives the center plate (81) to rotate. In the process of rotating, the center plate (81) drives the cleaning column (7) to pass through the arc-shaped heat dissipation fins (3); Step III: The cleaning column (7) cleans the surface of the arc-shaped heat dissipation fins (3): The cleaning column (7) passes between the arc-shaped heat dissipation fins (3). During the cleaning process of the arc-shaped heat dissipation fins (3), the top end of the fixed shaft (47) pulls the pull rope (46), thereby driving the tooth plate (42) to move. During the movement of the tooth plate (42), the first gear (44) is driven to rotate, thereby causing the cleaning column (7) to rotate when passing between the arc-shaped heat dissipation fins (3), so as to improve the cleaning effect on the surface of the arc-shaped heat dissipation fins (3); Step IV: When the weather is fine, the water inside the water absorption plate (2) evaporates, and the water absorption plate (2) is reset: After the water inside the water absorption plate (2) evaporates, the clockwork spring (62) drives the second gear (64) to rotate through the rotating shaft (63), and the second gear (64) drives the square rod (51) to reset. At this time, the positioning plate (81) is also reset, and the toothed plate (42) is synchronously reset under the drive of the spring telescopic rod (48), so as to realize the reset of the entire device.