Low-carbon lightweight lifting driving flexible shaft

Abstract

The application discloses a low-carbon light lifting driving flexible shaft, relates to the technical field of flexible shafts, and comprises an anti-fatigue assembly, a lubricating assembly for lubricating the lifting driving flexible shaft is arranged in the anti-fatigue assembly, and a plurality of protection assemblies for preventing the lifting driving flexible shaft from being stuck are arranged on the outer surface of the anti-fatigue assembly. The low-carbon light lifting driving flexible shaft can prevent the lifting driving flexible shaft from being stuck due to the fact that the lifting driving flexible shaft cannot be reset after being bent for a long time. A plurality of extrusion rings are fixed to the inner walls of the driving flexible shaft mounting spaces, respectively. When the bending angle of the driving flexible shaft is too large, the plurality of fixing sleeves on the surface of the driving flexible shaft are moved to the inner walls on one side of the corresponding extrusion rings, the corresponding elastic pieces are pushed to be extruded, the reset coil spring is tightened, the driving flexible shaft is prevented from being continuously bent, and the driving flexible shaft is protected.

Description

Technical Field

[0001] This invention relates to the field of flexible shaft technology, specifically to a low-carbon, lightweight, lifting drive flexible shaft. Background Technology

[0002] A flexible drive shaft is a mechanical transmission component that can be flexibly bent in space to transmit rotational motion or linear power. It is mainly used in scenarios where it is inconvenient to use rigid shafts to achieve efficient transmission of power from the power source to the actuator. Its core feature is flexibility, which can adapt to complex spatial layouts. It is widely used in the automotive, machinery, home appliance and aerospace fields. The low-carbon lightweight lifting drive shaft transmits the rotational motion or linear motion of the power source to the actuator to achieve lifting action, while using low-carbon lightweight materials.

[0003] Existing low-carbon lightweight tilting drive flexible shafts are mostly used for tilting car sunroofs. The front glass of a car sunroof needs to tilt to achieve the function of ventilation. The tilting drive flexible shaft can be used with a motor, slide rail, drive slider, etc. The motor drives the flexible shaft to slide in the slide rail, and the flexible shaft drives the drive slider to move, thereby driving the front part of the front glass to complete the tilting action. However, the flexible shaft needs to be bent during the tilting process. During the high-frequency bending and resetting process, the winding structure of the shaft core steel wire will become loose and misaligned due to fatigue, forming a protrusion. When the protrusion rotates to the bending point, it will have a rigid collision with the inner wall of the protective sleeve and eventually jam. Most existing tilting drive flexible shafts do not have the function of automatic repair when they jam, thus making the low-carbon lightweight tilting drive flexible shaft unable to be used normally.

[0004] Therefore, we propose a low-carbon, lightweight, flexible lifting drive shaft to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a low-carbon, lightweight, bendable drive flexible shaft to solve the problem mentioned in the background art that most low-carbon, lightweight bendable drive flexible shafts are prone to jamming after repeated bending and cannot automatically repair themselves, thus affecting the normal use of the drive flexible shaft.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-carbon, lightweight lifting drive flexible shaft, comprising an anti-fatigue component, wherein the anti-fatigue component is internally provided with a lubrication component for lubricating the lifting drive flexible shaft, and the outer surface of the anti-fatigue component is provided with multiple protective components for preventing the lifting drive flexible shaft from jamming. Each protective component includes a fixing sleeve, and the outer surface of the fixing sleeve is uniformly provided with multiple elastic elements for preventing excessive compression of the lifting drive flexible shaft. A compression ring is fixedly connected to one end of each of the multiple elastic elements. Multiple tooth rows are fixedly connected to the inner wall of the compression ring, and gears are meshed with the outer surfaces of each of the multiple tooth rows. A connecting shaft is fixedly embedded in the inner wall of each of the multiple gears, and a return coil spring is provided at one end of each of the multiple connecting shafts. When the lifting drive flexible shaft is compressed during bending, it causes the fixing sleeve to move towards the compression ring, causing the corresponding elastic elements to be compressed. The multiple gears move and rotate along the corresponding tooth rows, causing the return coil spring to tighten. The return coil spring and elastic elements then return to their original position under their own elasticity, causing the lifting drive flexible shaft to partially reset.

[0007] Preferably, the protective assembly further includes multiple telescopic rods, multiple auxiliary frames are uniformly fixedly installed on the outer surface of the fixed sleeve, each of the multiple auxiliary frames has an installation sleeve fixed on its outer surface, and one end of each of the multiple elastic elements is fixedly connected to the outer surface of the fixed sleeve.

[0008] Preferably, the other end of each of the plurality of elastic elements is fixedly connected to the inner wall of the compression ring, and one end of each of the plurality of telescopic rods is fixedly connected to the outer surface of the fixed sleeve. The plurality of telescopic rods are respectively disposed inside the plurality of elastic elements.

[0009] Preferably, the other end of each of the multiple telescopic rods is fixedly connected to the inner wall of the compression ring, the two ends of the multiple connecting shafts respectively extend movably to the opposite exterior of the multiple auxiliary frames, one end of each of the multiple connecting shafts respectively extends movably to the exterior of the multiple mounting sleeves, and the outer surface of each of the multiple connecting shafts is fixedly connected to one end of each of the multiple reset coil springs.

[0010] Preferably, the fatigue-resistant component includes a metal braided protective sleeve, the inner wall of which is provided with multiple steel wire winding layers, and a miniature universal coupling is provided between the outer surfaces of the multiple steel wire winding layers. The internal parts of the multiple miniature universal couplings are coupled with two connection points.

[0011] Preferably, both ends of the plurality of miniature universal couplings are fixedly connected to the outer surface of the corresponding wire winding layer, one end of the metal braided protective sleeve is fixedly installed with a first fixed connecting sleeve, the first fixed connecting sleeve is internally threaded with a first rotating connecting member, and the other end of the metal braided protective sleeve is fixedly installed with a second fixed connecting sleeve.

[0012] Preferably, the second fixed connecting sleeve has a second rotating connecting member internally threaded, the inner walls of the plurality of wire winding layers are provided with spiral winding layers, the inner walls of the plurality of spiral winding layers are provided with shaft cores, and the inner walls of the plurality of fixed sleeves are fixedly connected to the outer surface of the metal braided protective sleeve.

[0013] Preferably, each of the lubrication components includes a PVC sheath, the PVC sheaths are respectively disposed inside the multiple shaft cores, the inner walls of the multiple PVC sheaths are coupled with hollow metal chains, the relative inner walls of the multiple hollow metal chains are coupled with hollow rubber rings, and the outer surface of the metal braided protective sleeve is provided with multiple air pumps.

[0014] Preferably, each of the output ends of the multiple air pumps is fixedly connected to a delivery pipe, one end of each of the multiple delivery pipes is fixedly inserted into the interior of the metal braided protective sleeve, one end of each of the multiple delivery pipes is respectively fixedly inserted into the interior of multiple steel wire winding layers, one end of each of the multiple delivery pipes is respectively fixedly inserted into the interior of multiple PVC sheaths, multiple hollow metal chains and multiple hollow rubber rings, a solenoid valve is provided on the outer surface of each of the multiple delivery pipes, a hollow conical sleeve is fixedly embedded in the inner wall of each of the multiple PVC sheaths, and a connecting rod is fixed between the relative inner walls of the multiple hollow conical sleeves.

[0015] Preferably, each of the multiple connecting rods has a miniature spring on its outer surface, one end of each of the multiple miniature springs is fixedly connected to a valve core ball, the other end of each of the multiple miniature springs is fixedly connected to the outer surface of the multiple connecting rods, and the multiple valve core balls are respectively disposed inside the multiple hollow conical sleeves.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. To prevent the flexible drive shaft from jamming due to prolonged bending, multiple compression rings are first fixed to the inner wall of the drive shaft mounting space. When the bending angle of the drive shaft is too large, multiple fixing sleeves on its surface are pushed to move towards the inner wall of the corresponding compression ring, thereby pushing the corresponding elastic element to be compressed, causing the reset spring to tighten, thus preventing the drive shaft from bending further and protecting the drive shaft. This solves the problem in the prior art where most low-carbon lightweight flexible drive shafts are prone to jamming after repeated bending and cannot automatically repair themselves, affecting the normal use of the drive shaft.

[0018] 2. To further ensure the fatigue resistance of the lifting drive flexible shaft, a miniature universal coupling is used to divide the drive flexible shaft into multiple segments, ensuring its flexibility. The friction and deformation between the steel wires work together with the shaft core to transmit power, enhancing the overall torsional resistance of the drive flexible shaft. The spiral winding layer further enhances the fatigue resistance of the drive flexible shaft. Through the layered structure of the drive flexible shaft, slight relative sliding is allowed when it bends, adapting to different bending angles, dispersing stress during bending and rotation, preventing the shaft core from breaking due to long-term stress, avoiding functional failure due to local wear and breakage, reducing the replacement frequency of the flexible shaft, and reducing maintenance costs.

[0019] 3. When lubrication of the drive flexible shaft is required, firstly, multiple air pumps are started through external control equipment to deliver gas into the interior of multiple hollow rubber rings, causing the hollow rubber rings to expand outwards. This allows the lubricating oil between the multiple PVC sheaths and the hollow rubber rings to flow towards the inner wall of the PVC sheaths, thus allowing the lubricating oil to flow outwards and evenly onto the surface of the spiral winding layer and the wire winding layer, and penetrate into the interior of the metal braided protective sleeve, thereby providing lubrication and protection for the drive flexible shaft. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a low-carbon, lightweight, lifting drive flexible shaft according to the present invention.

[0021] Figure 2 This is a side perspective view of a low-carbon, lightweight, lifting drive flexible shaft according to the present invention.

[0022] Figure 3 This is a perspective view of the second fixed connecting sleeve portion of a low-carbon, lightweight lifting drive flexible shaft according to the present invention.

[0023] Figure 4 This is a partial cross-sectional perspective view of the metal braided protective sleeve of a low-carbon, lightweight, lifting drive flexible shaft according to the present invention.

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a three-dimensional view of the fatigue-resistant component of a low-carbon, lightweight, lifting drive flexible shaft according to the present invention.

[0026] Figure 7 This is a partial cross-sectional perspective view of the lubrication assembly of a low-carbon, lightweight lifting drive flexible shaft according to the present invention.

[0027] Figure 8 This is a three-dimensional cross-sectional view of the hollow conical sleeve portion of a low-carbon, lightweight, lifting drive flexible shaft according to the present invention.

[0028] Figure 9This is a perspective view of a protective component of a low-carbon, lightweight, lifting drive flexible shaft according to the present invention.

[0029] Figure 10 This is a three-dimensional view of the toothed section of a low-carbon, lightweight, lifting drive flexible shaft according to the present invention.

[0030] In the picture:

[0031] 1. Fatigue-resistant components; 101. Metal braided protective sleeve; 102. Steel wire winding layer; 103. Miniature universal coupling; 104. Connection point; 105. First fixed connecting sleeve; 106. First rotating connecting member; 107. Spiral winding layer; 108. Shaft core; 109. Second fixed connecting sleeve; 110. Second rotating connecting member; 2. Lubrication components; 201. PVC sheath; 202. Hollow metal chain; 203. Hollow 204. Core rubber ring; 205. Air pump; 206. Delivery pipe; 207. Solenoid valve; 208. Hollow conical sleeve; 209. Connecting rod; 210. Miniature spring; 3. Valve core ball; 3. Protective components; 301. Fixing sleeve; 302. Elastic element; 303. Telescopic rod; 304. Compression ring; 305. Gear rack; 306. Auxiliary frame; 307. Connecting shaft; 308. Gear; 309. Mounting sleeve; 310. Return coil spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-10This invention provides a technical solution: a low-carbon, lightweight lifting drive flexible shaft, including an anti-fatigue component 1. The anti-fatigue component 1 has a lubrication component 2 inside for lubricating the lifting drive flexible shaft. The outer surface of the anti-fatigue component 1 has multiple protective components 3 to prevent the lifting drive flexible shaft from jamming. Each protective component 3 includes a fixing sleeve 301. The outer surface of the fixing sleeve 301 is uniformly provided with multiple elastic elements 302 to prevent excessive compression of the lifting drive flexible shaft. A compression ring 304 is fixedly connected to one end of each elastic element 302. Multiple toothed rows 305 are fixedly connected to the inner wall of the compression ring 304. Gears 308 are meshed with the outer surfaces of each toothed row 305. Connecting shafts 307 are fixedly embedded in the inner walls of each gear 308. Each end of shaft 307 is provided with a return coil spring 310. When the lifting drive flexible shaft is squeezed during bending, it drives the fixed sleeve 301 to move towards the compression ring 304, causing the elastic element 302 in the corresponding direction to be squeezed. Multiple gears 308 move and rotate along the corresponding gear row 305, causing the return coil spring 310 to tighten. The return coil spring 310 and the elastic element 302 then reset under their own elasticity, causing the lifting drive flexible shaft to reset part of its original position. The protective component 3 also includes multiple telescopic rods 303. Multiple auxiliary frames 306 are uniformly fixedly installed on the outer surface of the fixed sleeve 301. Each of the multiple auxiliary frames 306 has a mounting sleeve 309 fixedly installed on its outer surface. One end of each of the multiple elastic elements 302 is fixedly connected to the outer surface of the fixed sleeve 301. The other ends of multiple elastic elements 302 are fixedly connected to the inner wall of the compression ring 304. One end of multiple telescopic rods 303 is fixedly connected to the outer surface of the fixing sleeve 301. The multiple telescopic rods 303 are respectively disposed inside the multiple elastic elements 302. The other ends of multiple telescopic rods 303 are fixedly connected to the inner wall of the compression ring 304. The two ends of multiple connecting shafts 307 respectively movably pass through to the opposite exterior of multiple auxiliary frames 306. One end of multiple connecting shafts 307 respectively movably passes through to the exterior of multiple mounting sleeves 309. The outer surfaces of multiple connecting shafts 307 are respectively fixedly connected to one end of multiple reset coil springs 310. The fatigue-resistant component 1 includes a metal braided protective sleeve 101. The inner wall of the metal braided protective sleeve 101 is provided with multiple steel wire windings. Each of the multiple wire-wound layers 102 has a miniature universal coupling 103 installed between its outer surfaces. Each miniature universal coupling 103 has two connection points 104 coupled inside. The two ends of each miniature universal coupling 103 are fixedly connected to the corresponding outer surface of the wire-wound layer 102. A first fixed connecting sleeve 105 is fixedly installed at one end of a metal braided protective sleeve 101, and a first rotating connector 106 is threaded into the interior of the first fixed connecting sleeve 105. A second fixed connecting sleeve 109 is fixedly installed at the other end of the metal braided protective sleeve 101, and a second rotating connector 110 is threaded into the interior of the second fixed connecting sleeve 109. The inner walls of each of the multiple wire-wound layers 102 are provided with a spiral winding layer 107.Each of the multiple spiral winding layers 107 has a shaft core 108 on its inner wall, and the inner walls of the multiple fixing sleeves 301 are fixedly connected to the outer surface of the metal braided protective sleeve 101.

[0034] In this embodiment, when using a low-carbon, lightweight tilting drive flexible shaft to tilt a car sunroof, to prevent the tilting drive flexible shaft from bending over a long period of time and becoming unable to return to its original position, thus causing it to jam, a protective component 3 is first fixedly installed on the outer surface of the metal braided protective sleeve 101 to protect the drive flexible shaft from bending. For example... Figure 2 As shown, multiple fixing sleeves 301 correspond to the center positions of multiple wire winding layers 102, which is to prevent repeated bending and jamming of each section of the drive flexible shaft. During the installation of the drive flexible shaft, multiple extrusion rings 304 are fixed to the inner wall of the drive flexible shaft installation space, and the external drive device is fixedly connected to the first rotating connector 106. The external lifting device is fixedly connected to one end of the second rotating connector 110. When the external drive device drives the first rotating connector 106 to rotate, it drives the metal braided protective sleeve 101 to rotate, thereby driving the second rotating connector 110 to rotate, and then driving the lifting device to rotate. During the rotation of the drive flexible shaft, when the bending angle of the drive flexible shaft is too large, it pushes the multiple fixing sleeves 301 on its surface to move towards the inner wall of the corresponding extrusion ring 304, thereby pushing the corresponding elastic element 302 to be compressed. Among them, multiple telescopic rods 303 provide positioning support for their corresponding fixing sleeves 301. At the same time, the movement of the fixing sleeves 301 drives the corresponding gears 308. The movement along the outer surface of the gear rack 305 drives the gear 308 to rotate, which in turn drives the corresponding connecting shaft 307 to rotate, causing the return spring 310 to tighten. This prevents the drive flexible shaft from continuing to bend, protecting it from excessive bending and causing it to jam. After the drive flexible shaft finishes bending, multiple elastic elements 302 will reset under their own action, thereby pushing the corresponding fixing sleeve 301 to reset. At the same time, multiple return springs 310 will release under their own elastic force, driving the corresponding gear 308 to rotate in the opposite direction. This causes the gear 308 to rotate and move in the opposite direction along the outer surface of its corresponding gear rack 305, further pushing the fixing sleeve 301 to reset, thus automatically pushing the drive flexible shaft to reset. This allows the protective layer inside the drive flexible shaft to automatically reset, preventing the drive flexible shaft from becoming fatigued and unable to reset during repeated bending, thus preventing jamming. This solves the problem in the prior art where most low-carbon lightweight bendable drive flexible shafts are prone to jamming after repeated bending and cannot automatically repair themselves, affecting the normal use of the drive flexible shaft.

[0035] like Figures 1-6As shown, the fatigue-resistant component 1 includes a metal braided protective sleeve 101. Multiple wire winding layers 102 are arranged on the inner wall of the metal braided protective sleeve 101. Miniature universal couplings 103 are arranged between the outer surfaces of the multiple wire winding layers 102. Two connection points 104 are coupled inside each of the multiple miniature universal couplings 103. The two ends of the multiple miniature universal couplings 103 are respectively fixedly connected to the outer surface of the corresponding wire winding layer 102. A first fixed connection is fixedly installed at one end of the metal braided protective sleeve 101. The first fixed connecting sleeve 105 has a first rotating connector 106 internally threadedly connected to it. The other end of the metal braided protective sleeve 101 is fixedly installed with a second fixed connecting sleeve 109. The second fixed connecting sleeve 109 has a second rotating connector 110 internally threadedly connected to it. The inner walls of the multiple wire winding layers 102 are provided with spiral winding layers 107. The inner walls of the multiple spiral winding layers 107 are provided with shaft cores 108. The inner walls of the multiple fixed sleeves 301 are fixedly connected to the outer surface of the metal braided protective sleeve 101.

[0036] In this embodiment, to further ensure the fatigue resistance of the lifting drive flexible shaft, a miniature universal coupling 103 is used to divide the drive flexible shaft into multiple segments. This ensures the flexibility of the drive flexible shaft. After the bending angle of each segment is split, each segment of the drive flexible shaft only needs to bear a small bending amplitude. The stress concentration area is distributed across multiple segments, avoiding excessive stress on a single location for a long time. This reduces the rigid stress generated by forced bending of the drive flexible shaft, making each segment of the drive flexible shaft closer to its natural bending state. In addition, the metal braided protective sleeve 101 provides overall protection for the drive flexible shaft. The metal braided protective sleeve 101, the spiral winding layer 107, and the shaft core 108 are all made of aluminum alloy, which is lightweight, high-strength, corrosion-resistant, and has good ductility. The advantages of this design meet the requirements of low carbon and lightweight construction. The wire winding layer 102 is made of multiple strands of steel wire wound at a specific angle. Through the friction and deformation between the steel wires, the shaft core 108 transmits power, enhancing the overall torsional resistance of the drive flexible shaft. In addition, the spiral winding layer 107 further enhances the fatigue resistance of the drive flexible shaft. Through the layered structure of the drive flexible shaft, it allows for slight relative sliding when the drive flexible shaft bends, adapting to different bending angles, dispersing stress during bending and rotation, and preventing the shaft core 108 from breaking due to long-term stress. Through the action of the anti-fatigue component 1, the risk of fatigue fracture of the steel wires inside the drive flexible shaft can be reduced, avoiding functional failure caused by local wear and fracture, reducing the replacement frequency of the flexible shaft, and reducing maintenance costs.

[0037] like Figures 7-8As shown, multiple lubrication components 2 each include a PVC sheath 201, which is respectively disposed inside multiple shaft cores 108. Hollow metal chains 202 are coupled to the inner walls of each PVC sheath 201, and hollow rubber rings 203 are coupled to the opposing inner walls of each hollow metal chain 202. Multiple air pumps 204 are disposed on the outer surface of the metal braided protective sleeve 101, and delivery pipes 205 are fixedly connected to the output ends of each air pump 204. One end of each delivery pipe 205 is fixedly inserted into the interior of the metal braided protective sleeve 101, and another end of each delivery pipe 205 is fixedly inserted into the interior of multiple wire winding layers 102. One end of each component is fixedly inserted through the interior of multiple PVC sheaths 201, multiple hollow metal chains 202, and multiple hollow rubber rings 203. Solenoid valves 206 are provided on the outer surface of multiple conveying pipes 205. Hollow conical sleeves 207 are fixedly embedded in the inner wall of multiple PVC sheaths 201. Connecting rods 208 are fixed between the relative inner walls of multiple hollow conical sleeves 207. Miniature springs 209 are provided on the outer surface of multiple connecting rods 208. A valve core ball 210 is fixedly connected to one end of multiple miniature springs 209. The other end of multiple miniature springs 209 is fixedly connected to the outer surface of multiple connecting rods 208. Multiple valve core balls 210 are respectively located inside multiple hollow conical sleeves 207.

[0038] In this embodiment, to prevent wear of the drive flexible shaft due to excessive friction during long-term use, when lubrication of the drive flexible shaft is required, multiple air pumps 204 are first started by external control equipment, and multiple solenoid valves 206 are opened to deliver gas into the interior of multiple hollow rubber rings 203, causing the hollow rubber rings 203 to expand outwards. This allows the lubricating oil between the multiple PVC sheaths 201 and the hollow rubber rings 203 to flow towards the inner wall of the PVC sheaths 201. The PVC sheaths 201 have a certain elasticity and strong stability. During the flow of lubricating oil, multiple valve core balls 210 are squeezed towards the outside of the PVC sheaths 201, causing multiple micro springs 209 to shorten. This causes the multiple valve core balls 210 to move to the position of the larger inner diameter of the hollow conical sleeve 207, allowing the lubricating oil to flow outwards and evenly onto the surface of the spiral winding layer 107 and the wire winding layer 102, and to penetrate into the interior of the metal braided protective sleeve 101, thereby providing lubrication and protection for the drive flexible shaft.

[0039] The usage and working principle of this device: To prevent the flexible drive shaft from bending over time and becoming unable to return to its original position, thus causing it to jam, a protective component 3 is first fixedly installed on the outer surface of the metal braided protective sleeve 101 to protect the flexible drive shaft from bending. For example... Figure 2As shown, multiple fixing sleeves 301 correspond to the center positions of multiple wire winding layers 102 respectively. During the installation of the drive flexible shaft, multiple extrusion rings 304 are fixed to the inner wall of the drive flexible shaft installation space, and the external drive device is fixedly connected to the first rotating connector 106. The external lifting device is fixedly connected to one end of the second rotating connector 110. When the external drive device drives the first rotating connector 106 to rotate, it drives the metal braided protective sleeve 101 to rotate, thereby driving the second rotating connector 110 to rotate, and then driving the lifting device to rotate. During the rotation of the drive flexible shaft, when the bending angle of the drive flexible shaft is too large, it pushes the multiple fixing sleeves 301 on its surface toward the corresponding extrusion rings 304. The inner wall moves, thereby pushing the corresponding elastic element 302 to be compressed. Multiple telescopic rods 303 provide positioning support for their corresponding fixed sleeves 301. The movement of the fixed sleeves 301 causes the corresponding gear 308 to move along the outer surface of the gear rack 305, thus rotating the gear 308 and consequently rotating the corresponding connecting shaft 307. This causes the return spring 310 to tighten, preventing the drive flexible shaft from bending further. After the drive flexible shaft bends, the multiple elastic elements 302 reset under their own action, pushing the corresponding fixed sleeve 301 to reset. Simultaneously, the multiple return springs 310 release under their own elastic force, causing the corresponding gear 308 to rotate in the opposite direction. The gears rotate and move in the opposite direction along the outer surface of the corresponding gear rack 305, thereby further pushing the fixed sleeve 301 to reset, thus automatically pushing the drive flexible shaft to reset. The drive flexible shaft is divided into multiple segments by the miniature universal coupling 103, so that the bending angle of each segment is split. After the bending angle of each segment is split, each segment of the drive flexible shaft only needs to bear a small bending amplitude. The stress concentration area is distributed to multiple segments, avoiding long-term excessive stress at a single position and reducing rigid stress caused by forced bending of the drive flexible shaft. The metal braided protective sleeve 101 provides overall protection for the drive flexible shaft. The steel wire winding layer 102 is made of multiple strands of steel wire wound at a specific angle. Through the friction and deformation between the steel wires, the shaft core 108 transmits power, enhancing the overall torsional resistance of the drive flexible shaft. In addition, the spiral winding layer 10 The configuration 7 further enhances the fatigue resistance of the drive flexible shaft. When lubrication of the drive flexible shaft is required, multiple air pumps 204 are first started via external control equipment, and multiple solenoid valves 206 are opened to deliver gas into the interior of multiple hollow rubber rings 203. This causes the hollow rubber rings 203 to expand outwards, allowing the lubricating oil located between the multiple PVC sheaths 201 and the hollow rubber rings 203 to flow towards the inner wall of the PVC sheaths 201. During the flow of lubricating oil, multiple valve core balls 210 are squeezed towards the outer side of the PVC sheaths 201, causing multiple miniature springs 209 to shorten. This moves the multiple valve core balls 210 to the position with the larger inner diameter of the hollow conical sleeve 207, allowing the lubricating oil to flow outwards.The fluid flows evenly onto the surfaces of the spiral winding layer 107 and the wire winding layer 102, and penetrates into the interior of the metal braided protective sleeve 101. The external control system is electrically connected to both the air pump 204 and the solenoid valve 206.

[0040] The wiring diagrams of the air pump 204 and solenoid valve 206 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the air pump 204 and solenoid valve 206 will not be explained in detail.

[0041] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A low-carbon, lightweight lifting drive flexible shaft, comprising an anti-fatigue component (1), wherein the anti-fatigue component (1) is internally provided with a lubrication component (2) for lubricating the lifting drive flexible shaft, characterized in that: The outer surface of the anti-fatigue component (1) is provided with a plurality of protective components (3) for preventing the lifting drive flexible shaft from jamming. The protective component (3) includes a fixed sleeve (301). The outer surface of the fixed sleeve (301) is uniformly provided with a plurality of elastic elements (302) for preventing excessive compression of the lifting drive flexible shaft. A compression ring (304) is fixedly connected between one end of the plurality of elastic elements (302). A plurality of tooth rows (305) are fixedly connected to the inner wall of the compression ring (304). A gear (308) is meshed with the outer surface of the plurality of tooth rows (305). A connecting shaft (307) is fixedly embedded in the inner wall of the plurality of gears (308). A reset coil spring (310) is provided at one end of the plurality of connecting shafts (307). When the lifting drive flexible shaft is squeezed during bending, it drives the fixed sleeve (301) to move towards the compression ring (304), so that the elastic element (302) in the corresponding direction is squeezed. The multiple gears (308) move and rotate along the corresponding tooth row (305), which drives the reset coil spring (310) to tighten. The reset coil spring (310) and the elastic element (302) then reset under their own elastic action, driving the lifting drive flexible shaft to reset part of its position. The other end of each of the multiple elastic elements (302) is fixedly connected to the inner wall of the compression ring (304), and one end of each of the multiple telescopic rods (303) is fixedly connected to the outer surface of the fixed sleeve (301). The multiple telescopic rods (303) are respectively disposed inside the multiple elastic elements (302). The other end of each of the multiple telescopic rods (303) is fixedly connected to the inner wall of the compression ring (304). The two ends of the multiple connecting shafts (307) respectively extend through to the opposite exterior of the multiple auxiliary frames (306). One end of each of the multiple connecting shafts (307) extends through to the exterior of the multiple mounting sleeves (309). The outer surface of each of the multiple connecting shafts (307) is fixedly connected to one end of each of the multiple reset coil springs (310). The fatigue-resistant component (1) includes a metal braided protective sleeve (101), the inner wall of which is provided with multiple steel wire winding layers (102), and a miniature universal coupling (103) is provided between the outer surfaces of the multiple steel wire winding layers (102), and two connection points (104) are coupled inside the multiple miniature universal couplings (103). Both ends of the multiple miniature universal couplings (103) are respectively fixedly connected to the outer surface of the corresponding wire winding layer (102). One end of the metal braided protective sleeve (101) is fixedly installed with a first fixed connecting sleeve (105). The first fixed connecting sleeve (105) is internally threaded with a first rotating connecting member (106). The other end of the metal braided protective sleeve (101) is fixedly installed with a second fixed connecting sleeve (109). Each of the multiple lubrication components (2) includes a PVC sheath (201), and the multiple PVC sheaths (201) are respectively disposed inside the multiple shaft cores (108). The inner walls of the multiple PVC sheaths (201) are coupled with hollow metal chains (202), and the relative inner walls of the multiple hollow metal chains (202) are coupled with hollow rubber rings (203). The outer surface of the metal braided protective sleeve (101) is provided with multiple air pumps (204). Each of the multiple air pumps (204) has a fixed connection to a delivery pipe (205) at its output end. One end of each delivery pipe (205) is fixedly inserted into the interior of a metal braided protective sleeve (101). One end of each delivery pipe (205) is fixedly inserted into the interior of multiple wire winding layers (102). One end of each delivery pipe (205) is fixedly inserted into the interior of multiple PVC sheaths (201), multiple hollow metal chains (202), and multiple hollow rubber rings (203). Solenoid valves (206) are provided on the outer surface of each delivery pipe (205). Hollow conical sleeves (207) are fixedly embedded in the inner wall of each of the multiple PVC sheaths (201). Connecting rods (208) are fixed between the relative inner walls of each of the multiple hollow conical sleeves (207). Each of the multiple connecting rods (208) has a miniature spring (209) on its outer surface. One end of each of the multiple miniature springs (209) is fixedly connected to a valve core ball (210). The other end of each of the multiple miniature springs (209) is fixedly connected to the outer surface of the multiple connecting rods (208). The multiple valve core balls (210) are respectively disposed inside the multiple hollow conical sleeves (207).

2. The low-carbon lightweight lifting drive flexible shaft according to claim 1, characterized in that: The protective component (3) also includes multiple telescopic rods (303), multiple auxiliary frames (306) are uniformly fixedly installed on the outer surface of the fixed sleeve (301), and mounting sleeves (309) are fixedly installed on the outer surface of each of the multiple auxiliary frames (306), and one end of each of the multiple elastic elements (302) is fixedly connected to the outer surface of the fixed sleeve (301).

3. The low-carbon lightweight lifting drive flexible shaft according to claim 1, characterized in that: The second fixed connecting sleeve (109) is internally threaded with a second rotating connector (110), the inner walls of the multiple wire winding layers (102) are provided with spiral winding layers (107), the inner walls of the multiple spiral winding layers (107) are provided with shaft cores (108), and the inner walls of the multiple fixed sleeves (301) are fixedly connected to the outer surface of the metal braided protective sleeve (101).

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