tensioning device

Abstract

The application provides a tensioning device. The tensioning device comprises a winding member, a tightening member, a locking member and an adjusting member. The winding member is internally hollow. The tightening member is rotationally arranged at the end of the winding member and is configured to fix the other end of a rope. The locking member is arranged in the interior of the winding member and comprises a locking seat and a matching seat. The matching seat is configured to rotate unidirectionally around the axis of the locking seat. The matching seat can rotate synchronously with the tightening member and can slide relative to the tightening member along the axis of the locking member. The adjusting member is in threaded cooperation with the locking seat to form a screw rod transmission structure. The adjusting member is used to drive the locking seat and the matching seat to rotate relative to the winding member along the axis and at the same time to rotate relative to the tightening member, so that the matching seat drives the tightening member to rotate around the axis of the tightening member. The application can drive the tightening member to rotate slightly through the adjusting member, realize stepless adjustment when the end of the rope is tightened and adjust the tension of the rope after winding at will.

Description

Technical Field

[0001] This application relates to the field of tensioning technology, and more specifically, to a tensioning device. Background Technology

[0002] Tensioning devices are common components in wire-driven robots or rope-driven robots. They are used to tension a closed rope-driven system, giving the transmission system with the rope-driven system a certain preload, thereby improving transmission accuracy and smoothness.

[0003] Current tensioning devices typically include a check mechanism, such as a ratchet and pawl structure, which can gradually wind the rope onto the outer wall of the tensioning device and prevent the rope from slack. However, because the angle difference between two adjacent teeth of the ratchet is relatively large, it is impossible to precisely control the winding stroke. When tightening to the end of the rope, the tension at the end of the rope is easily too loose or too tight, making it impossible to set the rope tension as needed. Summary of the Invention

[0004] This application addresses the shortcomings of existing methods by proposing a tensioning device to solve the technical problem that related technologies cannot arbitrarily set the tension of the rope as needed.

[0005] This application provides a tensioning device, including:

[0006] The wound part is hollow inside;

[0007] The tightening element, rotatably disposed at the end of the winding element, is configured to fix one end of the rope;

[0008] A locking element, disposed inside the winding element, includes a locking seat and a mating seat. The mating seat is configured to rotate unidirectionally about the axis of the locking seat. The mating seat can rotate synchronously with the tightening element and can slide relative to the tightening element along the axis of the locking element.

[0009] An adjusting component, threadedly engaged with the locking seat, forms a screw drive structure, used to drive the locking seat and the mating seat to approach the tightening component along the axis and rotate relative to the winding component at the same time, so that the mating seat drives the tightening component to rotate around its own axis.

[0010] Optionally, the adjusting member is inserted inside the winding member, with its first end threadedly engaged with the locking seat and its second end rotatably connected to the tightening member;

[0011] At least one spiral groove is provided on the inner wall of the winding member or the outer wall of the locking seat, and a protrusion structure that can slide along the spiral groove is provided between the locking seat and the winding member.

[0012] Optionally, the protrusion structure is integrated into the outer wall surface of the locking seat or integrated into the inner wall surface of the winding member;

[0013] Alternatively, the protrusion structure is independent of the locking seat and the winding member, and is clamped and limited between the locking seat and the winding member, the protrusion structure having a degree of freedom to roll relative to the locking seat and the winding member.

[0014] Optionally, the tensioning device further includes a mounting base installed at the end of the winding member away from the tightening member, a first end of the adjusting member being rotatably connected to the mounting base, and a second end of the adjusting member being exposed outside the tightening member.

[0015] Optionally, the adjusting member includes a rod and a head, the tightening member has a limiting groove, and the head is rotatably disposed in the limiting groove.

[0016] Optionally, the adjusting element includes a self-locking screw.

[0017] Optionally, the portion of the tightening member extending into the winding member is connected to the mating seat via a slide key.

[0018] Optionally, the tightening member includes a main body portion rotatably disposed at the end of the winding member and a connecting portion disposed on the bottom surface of the main body portion and extending along the axis of the winding member, wherein the inner wall of the connecting portion encloses a sliding space, and a portion of the mating seat is slidably disposed within the sliding space.

[0019] Optionally, the tensioning device further includes a bearing, which is sandwiched between the connecting portion and the winding member, and the tightening member is fixedly connected to the inner ring of the bearing.

[0020] Optionally, the tensioning device further includes at least one of the following:

[0021] Both the mating seat and the locking seat include end-face ratchet;

[0022] The tensioning device further includes an elastic element, which abuts against the tensioning element and the mating seat;

[0023] The outer wall of the winding component has multiple grooves arranged at axial intervals.

[0024] The beneficial technical effects of the technical solutions provided in this application include:

[0025] In this embodiment of the application, by designing an adjusting member that is threadedly engaged with the locking seat, a screw drive structure is formed between the locking seat and the adjusting member. The mating seat is designed to be able to rotate unidirectionally with the locking seat around the axial direction of the locking member. The mating seat and the tightening member are designed to slide relative to each other along the axis of the tightening member and cannot rotate relative to each other. When the tightening member is rotated, the mating seat rotates unidirectionally around the axis of the locking seat under the constraint of the tightening member, thereby preventing the rope from slackening as it is gradually wound around the outer wall of the tensioning device. Then, by rotating the adjusting member, the locking member is driven to move along the axis closer to the tightening member and rotate relative to the winding member. Through the transmission of the locking member, the tightening member can be driven to rotate around its own axis to tighten the end of the rope. Utilizing the high precision and high stability of the screw drive structure, the angle adjustment accuracy and stability of the locking member and the tightening member during rotation can be improved. Furthermore, utilizing the self-locking characteristic of the screw drive structure, the locking member can achieve self-locking on the adjusting member, preventing the locking member from sliding downward and causing the tightening member to rotate in the opposite direction and the rope to slacken. This application can achieve stepless adjustment of the end of the rope, thereby allowing the tension of the rope after winding to be adjusted arbitrarily as needed.

[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 This is a schematic diagram of the overall structure of a tensioning device provided in an embodiment of this application;

[0029] Figure 2 An exploded view of a tensioning device provided in an embodiment of this application;

[0030] Figure 3 This is a cross-sectional structural diagram of a tensioning device before it is tightened using an adjusting member, as provided in an embodiment of this application.

[0031] Figure 4 This is a schematic cross-sectional view of a tensioning device after it has been tightened using an adjusting member, as provided in an embodiment of this application.

[0032] Figure 5 A cross-sectional structural schematic diagram of the wound component provided in an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the assembled structure of the base and locking seat provided in the embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the structure of the locking seat provided in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the structure of the base provided in an embodiment of this application;

[0036] Figure 9 This is a schematic diagram of the structure of the tightening member provided in the embodiments of this application;

[0037] Figure 10 This is a schematic diagram of the structure of the mating seat provided in the embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10-Wound part; 11-Spiral groove; 12-Groove;

[0040] 20-Tightening parts;

[0041] 21-Main body; 211-Limiting groove; 212-Mounting groove; 213-Lead wire groove;

[0042] 22-Connecting part; 221-Slide groove; 222-Sliding space;

[0043] 30 - Locking element;

[0044] 31-Locking seat; 311-Center seat; 3111-First locking part; 3112-Second locking part; 3113-First ratchet; 312-Base; 313-Protruding structure;

[0045] 32-Matching seat; 321-First mating part; 322-Second mating part; 323-Second ratchet; 324-Slider;

[0046] 40 - Adjusting component; 41 - Head; 42 - Rod;

[0047] 50 - Mounting base; 60 - Bearing; 70 - Elastic element. Detailed Implementation

[0048] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0049] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0051] Tensioning devices are common components in wire-driven robots or rope-driven robots. They are used to tension a closed rope-driven system, giving the transmission system with the rope-driven system a certain preload, thereby improving transmission accuracy and smoothness.

[0052] In related technologies, tensioning devices typically include a check mechanism, such as a ratchet and pawl structure, which can gradually wind the rope onto the outer wall of the tensioning device and prevent the rope from slack. However, due to the large angular difference between two adjacent ratchet teeth, it is impossible to precisely control the winding stroke. When tightening to the end of the rope, the tension at the end of the rope may be too loose or too tight, making it impossible to set the rope tension as needed.

[0053] In order to solve the technical problem in related technologies that the tension of a rope cannot be arbitrarily set as needed, this application provides a new type of tensioning device.

[0054] See attached document Figures 1-10 The tensioning device in this application embodiment includes a winding member 10, a tightening member 20, a locking member 30, and an adjusting member 40.

[0055] The interior of the winding member 10 is hollow. The tightening member 20 is rotatably disposed at the end of the winding member 10 and is configured to fix one end of the rope.

[0056] The locking element 30 is disposed inside the winding element 10 and includes a locking seat 31 and a mating seat 32. The mating seat 32 is configured to rotate unidirectionally about the axis of the locking seat 31. The mating seat 32 can rotate synchronously with the tightening element 20 and can slide relative to the tightening element 20 along the axis of the locking element 30.

[0057] The adjusting element 40 is threadedly engaged with the locking seat 31 to form a screw drive structure, which is used to drive the locking seat 31 and the mating seat 32 to approach the tightening element 20 along the axis and rotate relative to the winding element 10 at the same time, so that the mating seat 32 drives the tightening element 20 to rotate around its own axis.

[0058] In this embodiment, an adjusting member 40 is designed to thread into the locking seat 31, forming a screw drive structure between the locking seat 31 and the adjusting member 40. The mating seat 32 is designed to rotate unidirectionally around the locking member 30 axis with the locking seat 31. The mating seat 32 and the tightening member 20 are designed to slide relative to each other along the axis of the tightening member 20 but cannot rotate relative to each other. When the tightening member 20 is rotated, the mating seat 32 can rotate unidirectionally around the axis of the locking seat 31 under the constraint of the tightening member 20, thereby preventing the rope from slackening during the gradual winding of the rope around the outer wall of the tensioning device (including the winding member 10 and the tightening member 20). Subsequently, by rotating the adjusting member 40, the locking member 30 can be driven to move along the axis towards the tightening member 20 and simultaneously rotate relative to the winding member 10. Through the transmission of the locking member 30, the tightening member 20 can be driven to rotate around its own axis to tighten the end of the rope. Utilizing the high precision and high stability of the screw drive structure, the angle adjustment accuracy and stability of the locking member 30 and the tightening member 20 during rotation can be improved. Furthermore, utilizing the self-locking characteristic of the screw drive structure, the locking member 30 can achieve self-locking on the adjusting member 40, preventing the locking member 30 from sliding downwards, causing the tightening member 20 to rotate in the opposite direction and the rope to slack off. This allows the present application to achieve stepless adjustment of the end of the rope, thereby enabling arbitrary adjustment of the tension of the rope after winding as needed.

[0059] Optionally, in the rope drive system, one end of the rope can be arbitrarily set on a movable part (such as a knuckle) that needs to be wound up or down, and the other end of the rope is fixed to the tightening member 20. The knuckle can be rotated by rotating the tightening member 20. Of course, the outer wall of the winding member 10 is also configured to fix one end of the rope and accommodate the rope to be wound, so as to realize the winding of the rope.

[0060] Optionally, refer to Figures 2-5 The adjusting member 40 is inserted inside the winding member 10. The first end of the adjusting member 40 is threadedly engaged with the locking seat 31, and the second end is rotatably connected to the tightening member 20. At least one spiral groove 11 is provided on the inner wall of the winding member 10 or the outer wall of the locking seat 31. A protruding structure 313 that can slide along the spiral groove 11 is provided between the locking seat 31 and the winding member 10.

[0061] In this embodiment, the cooperation between the protruding structure 313 and the spiral groove 11 enables the spiral groove 11 to guide and limit the movement trajectory of the locking member 30. When the adjusting member 40 is rotated, the locking member 30 can be driven to move linearly along the adjusting member 40. During the movement of the locking member 30, due to the limiting effect of the spiral groove 11 on the protruding structure 313 on the locking member 30, the locking member 30 is also subjected to a force that rotates around the adjusting member 40 during its movement along the axial direction of the adjusting member 40. This changes the movement trajectory of the locking member 30, allowing the locking member 30 to achieve synchronous movement of rotating around the adjusting member 40 and sliding along the adjusting member 40 under the drive of the adjusting member 40. During this process, the mating seat 32 and the tightening member 20 slide relative to each other along the axial direction. The tightening member 20 rotates synchronously with the mating seat 32, thereby driving the tightening member 20 to rotate synchronously and gradually tighten the end of the rope, achieving stepless adjustment of the tension of the rope after winding.

[0062] In one alternative embodiment, refer to Figure 2 The spiral groove 11 is formed on the inner wall surface of the winding member 10, and the protrusion structure 313 is integrated on the outer wall surface of the locking seat 31.

[0063] In another alternative embodiment (not shown in the figure), the spiral groove 11 can also be formed on the outer wall surface of the locking seat 31, and the protrusion structure 313 is integrated on the inner wall surface of the winding member 10.

[0064] In the two embodiments described above, the protrusion structure 313 can be a bump, and the protrusion structure 313 and the locking seat 31 or the winding member 10 can be integrally formed. The bump can be rigid or elastic. The spiral groove 11 and the protrusion structure 313 can be provided individually or in multiple circumferentially spaced to ensure that the locking member 30 is subjected to uniform force.

[0065] In another alternative embodiment (not shown in the figure), the protrusion 313 is independent of the locking seat 31 and the winding member 10, and the protrusion 313 is clamped and limited between the locking seat 31 and the winding member 10, and the protrusion 313 has a degree of freedom to roll relative to the locking seat 31 and the winding member 10.

[0066] As an optional solution in this embodiment, spiral grooves 11 can be formed on both the outer wall surface of the locking seat 31 and the inner wall surface of the winding member 10. The protruding structure 313 can be embedded as an independent component into the two spiral grooves 11 respectively, so that the protruding structure 313 can be clamped and limited between the locking seat 31 and the winding member 10. In order to maintain the relative rotation between the locking seat 31 and the winding member 10, the protruding structure 313 is selected as a rolling element, such as a ball or roller, and multiple balls or rollers are arranged sequentially in the spiral grooves 11. The balls or rollers have the degree of freedom to roll relative to the locking seat 31 and the winding member 10. When the adjusting member 40 is rotated, the balls or rollers can roll along the spiral grooves 11, thereby reducing the frictional resistance between the locking seat 31 and the winding member 10.

[0067] As another optional solution in this embodiment, the protrusion structure 313 is a ball, the inner wall of the winding member 10 is provided with a spiral groove 11, and the outer wall of the locking seat 31 is provided with a positioning groove for accommodating a single ball. The single ball is simultaneously embedded in the positioning groove and the spiral groove 11. When the adjusting member 40 is rotated, the movement trajectory of the locking member 30 can be guided and limited. During the relative rotation of the locking member 30 and the winding member 10, the ball slides along the spiral groove 11 and rolls freely in the positioning groove.

[0068] Optionally, refer to Figures 5-6 For ease of processing and manufacturing, in this embodiment, only the spiral groove 11 is opened on the inner wall of the winding member, and multiple spiral grooves 11 are arranged around the inner peripheral wall of the winding member 10. The protrusion structure 313 is a protrusion fixed on the outer wall of the locking seat 31, and multiple protrusion structures 313 are also arranged around the outer peripheral wall of the locking seat 31. This will be used as an example for illustration.

[0069] See attached document Figure 5 It should be noted that, in the appendix Figure 5 From the perspective shown, the spiral groove 11 has an angle relative to the axis of the winding member 10. From the bottom to the top of the winding member 10, the projection of the spiral groove 11 onto a horizontal plane perpendicular to the vertical plane shown forms an arc. The projections of multiple spiral grooves 11 around the circumference of the winding member 10 onto the horizontal plane form multiple outwardly diverging arcs, which form the spiral direction of the spiral groove 11. The spiral direction of the spiral groove 11 is the same as the rotation direction of the tightening member 20, that is, the winding direction of the rope.

[0070] Optionally, refer to Figures 3-5 The winding member 10 is a cylindrical shape with open ends, and the interior of the winding member 10 is configured to accommodate the locking member 30. The winding member 10, the tightening member 20, and the locking member 30 are arranged coaxially.

[0071] Optionally, refer to Figures 6-8For ease of processing, the locking seat 31 includes a center seat 311 and a base 312. The center seat 311 is used to engage with the mating seat 32, and the base 312 is fixedly connected to the center seat. The center seat 311 includes a first locking part 3111 that enables unidirectional rotation with the mating seat 32 and a second locking part 3112 disposed at the end of the first locking part 3111 away from the mating seat 32. The diameter of the first locking part 3111 is larger than the diameter of the second locking part 3112, so that the center seat 311 forms a stepped structure. The base 312 has a stepped groove inside to support the center seat 311. A protruding structure 313 is disposed on the outer wall of the base 312. The stepped structure of the base 312 can provide a more stable foundation for the center seat 311.

[0072] Optionally, refer to Figures 2-4 The tensioning device also includes a mounting base 50 installed at the end of the winding member 10 away from the tightening member 20, the first end of the adjusting member 40 is rotatably connected to the mounting base 50, and the second end of the adjusting member 40 is exposed outside the tightening member 20.

[0073] Optionally, the winding member 10 is detachably connected to the mounting base 50 via screws. The mounting base 50 provides stable support for the first end of the adjusting member 40 and the locking member 30. By designing the second end of the adjusting member 40 to pass through and protrude from the tightening member 20, the adjusting member 40 can be directly rotated during operation, thereby driving the tightening member 20 to rotate and gradually tighten the end of the rope, achieving stepless adjustment when tightening the rope.

[0074] Optionally, a limiting hole is provided at the center of the mounting base 50, and the first end of the adjusting member 40 extends into the limiting hole and can rotate freely within the limiting hole.

[0075] Optionally, refer to Figures 3-4 The adjusting member 40 includes a rod 42 and a head 41. The tightening member 20 has a limiting groove 211, and the head 41 is rotatably disposed in the limiting groove 211.

[0076] In this application, the head 41 of the adjusting member 40 has a larger diameter than the rod 42. A limiting groove 211 is provided in the part of the tightening member 20 exposed in the winding member 10. The limiting groove 211 is coaxial with the adjusting member 40. The head 41 of the adjusting member 40 abuts against the bottom surface of the limiting groove 211, which plays a role in stabilizing and supporting the head 41 of the adjusting member 40. The limiting groove 211 and the mounting base 50 can limit the two ends of the adjusting member 40 axially and radially, ensuring the coaxiality of the adjusting member 40 and the locking member.

[0077] Optionally, the adjusting element 40 includes a self-locking screw.

[0078] In this application, the adjusting component 40 is selected as a self-locking screw, which not only meets the requirement of high adjustment accuracy, but also can achieve self-locking after adjustment to lock the position of the adjusting component 40, thereby reducing the risk of the adjusting component 40 becoming loose due to vibration, impact or other external forces, and thus ensuring the uniformity of tension after the rope is wound.

[0079] Optionally, refer to Figures 9-10 The portion of the tightening member 20 that extends into the winding member 10 is connected to the mating seat 32 via a sliding key.

[0080] In one alternative, the portion of the tightening member 20 that extends into the winding member 10 has a groove 221 extending along the axis of the tightening member 20, and the mating seat 32 is provided with a slider 324 that mates with the groove 221.

[0081] In another alternative (not shown in the figure), a slider is provided on the outer wall of the portion of the tightening member 20 that extends into the winding member 10, and a groove extending along the axis and engaging with the slider is provided on the mating seat 32.

[0082] In this embodiment, by designing a matching groove 221 and slider 324, the mating seat 32 can slide relative to the tensioning member 20 along its axial direction. When the mating seat 32 rotates, it can drive the tensioning member 20 to rotate synchronously. The structure is relatively simple, easy to process and assemble, and reduces the probability of internal failures in the tensioning device of this application.

[0083] Optionally, refer to Figure 3 and Figure 9 The tightening member 20 includes a main body 21 rotatably disposed at the end of the winding member 10 and a connecting part 22 disposed on the bottom surface of the main body 21 and extending along the axis of the winding member 10. The inner wall of the connecting part 22 encloses a sliding space 222, and a partial mating seat 32 is slidably disposed within the sliding space 222.

[0084] Optionally, this embodiment of the application is illustrated by taking the example of a groove 221 being provided on the inner wall of the connecting part 22 and a slider 324 being provided on the outer wall of the mating seat 32 to slide and engage with the groove 221.

[0085] In this application, by designing a connecting portion 22 inside the winding member 10, it is easy to achieve a sliding fit between the tightening member 20 and the mating seat 32. The connecting portion 22 has a barrel-shaped structure with an opening at one end facing the mating seat 32, and the interior of the connecting portion 22 encloses a sliding space 222, which facilitates further guidance of the sliding of the mating seat 32.

[0086] Optionally, refer to Figure 9The main body 21 is disc-shaped, with a limiting groove 211 located at its center. The bottom of the limiting groove 211 protrudes from the bottom surface of the connecting part 22. A through hole is provided on the bottom plate of the connecting part 22 for the rod 42 of the adjusting member 40 to pass through. An installation groove 212 is provided on the outer wall of the main body 21 for fixing one end of the rope. A lead wire groove 213 communicating with the installation groove 212 is also provided on the outer wall of the main body 21 to guide and limit the portion of the rope near the end, preventing the section of rope near the end from slipping or jumping during winding.

[0087] Optionally, refer to Figure 10 The mating seat 32 includes a first mating part 321 and a second mating part 322. The first mating part 321 and the locking seat 31 are configured to rotate only in one direction around an axis. The second mating part 322 is slidably mated with the connecting part 22. The second mating part 322 is a barrel-shaped structure that mates with the connecting part 22. The second mating part 322 is slidably disposed within the sliding space 222 formed by the connecting part 22. The slider 324 is disposed on the outer wall of the second mating part 322 to facilitate mating with the sliding groove 221 of the connecting part 22.

[0088] Optionally, the slider 324 extends along the axis of the second mating portion 322, and the top end of the slider 324 extends to the top end of the second mating portion 322.

[0089] Optionally, refer to Figure 3 , Figure 7 and Figure 10 To enable unidirectional rotation of the mating seat 32 relative to the locking seat 31, both the mating seat 32 and the locking seat 31 include end-face ratchet wheels. That is, in this application, both the first locking part 3111 and the first mating part 321 are gear disc structures. A first ratchet 3113 is machined on the top surface of the first locking part 3111, and a ring of second ratchet 323 that meshes with the first ratchet 3113 is machined on the bottom surface of the first mating part 321 that contacts the first locking part 3111.

[0090] When the tightening member 20 drives the mating seat 32 to rotate, the mating seat 32 rotates relative to the locking seat 31 around the axial direction. When the adjusting member 40 is rotated to tighten the end of the rope, since the locking seat 31 and the mating seat 32 are locked, they cannot rotate relative to each other. Through the transmission of force, the locking seat 31 drives the mating seat 32 to rise along the rod 42 of the adjusting member 40 while rotating around the rod 42 of the adjusting member 40. Then, through the transmission of the mating seat 32, the rotation of the mating seat 32 drives the tightening member 20 to rotate, so that the end of the rope continues to tighten, which can realize stepless adjustment when tightening the end of the rope.

[0091] Optionally, refer to Figure 3 The tensioning device also includes an elastic element 70, which abuts between the tightening element 20 and the mating seat 32.

[0092] When the mating seat 32 rotates unidirectionally relative to the locking seat 31, the mating seat 32 will intermittently bounce along the axial direction. By setting the elastic element 70 between the mating seat 32 and the tightening member 20, the vibration and impact energy caused by the intermittent bounce can be effectively absorbed, reducing the impact on the entire tensioning device. The elastic element 70 can also provide a continuous preload between the mating seat 32 and the tightening member 20 to ensure the stability of the structure.

[0093] Optionally, a stepped hole is provided in the second mating part 322, which communicates with the sliding space 222. The elastic element 70 is sleeved on the outer periphery of the rod part 42 of the adjusting member 40. One end of the elastic element 70 abuts against the bottom surface of the stepped hole inside the second mating part 322, and the other end of the elastic element 70 abuts against the bottom surface of the connecting part 22. The elastic element 70 can be a spring or some air compression system.

[0094] Optionally, refer to Figures 3-4 The tensioning device also includes a bearing 60, which is sandwiched between the connecting part 22 and the winding part 10, and the tightening part 20 is fixedly connected to the inner ring of the bearing 60.

[0095] In this application, the bearing 60 is located inside the winding member 10 and sleeved on the connecting part 22, so that the bearing 60 is clamped between the connecting part 22 and the winding member 10. The end face of the inner ring (not shown in the figure) of the bearing 60 is fixedly connected to the bottom surface of the main body 21, and the inner wall surface of the inner ring of the bearing 60 is fixedly connected to the connecting part 22, so that the tightening member 20 can rotate smoothly. The bearing 60 also plays a certain role in sealing the port, preventing foreign objects from falling into the winding member 10 and thus affecting the transmission between the locking member 30, the adjusting member 40, and the tightening member 20.

[0096] Optionally, a plurality of grooves 12 arranged at axial intervals are provided on the outer wall of the winding member 10. The grooves 12 are used to limit the winding of the rope and prevent the rope from sliding on the outer wall surface of the winding member 10, thereby improving the tension uniformity of the rope after winding.

[0097] Reference Figures 3-4 , Figure 4 The elastic element 70 is not shown. Taking the clockwise rotation of the tightening element 20 to tighten the rope as an example, the entire working process of tightening the rope using the tensioning device of this application will be described:

[0098] First, rotate the tightening component 20 to initially tighten the rope.

[0099] The operator rotates the main body 21 of the tightening member 20 clockwise, causing the rope to gradually wind around the outer wall of the tensioning device (including the winding member 10 and the tightening member 20). Since the connecting part 22 and the mating seat 32 are connected by a groove 221 and a slider 324, the rotation of the tightening member 20 drives the mating seat 32 to rotate synchronously. This causes the mating seat 32 to rotate intermittently in one direction relative to the locking seat 31 around its axial direction, preventing the rope from reversing. The intermittent rotation of the mating seat 32 produces intermittent axial jumping, allowing the slider 324 on the second mating part 322 to slide intermittently up and down along the groove 221 of the connecting part 22. Simultaneously, the elastic member 70 intermittently contracts as the second mating part 322 slides up and down intermittently.

[0100] Next, rotate the adjusting piece 40 to tighten the end of the rope.

[0101] The operator rotates the head 41 of the adjusting member 40 clockwise. The locking seat 31 is gradually slid along the rod 42 of the adjusting member 40 towards the tightening member 20. Because the protruding structure 313 of the locking seat 31 is located in the spiral groove 11, it is guided by the spiral groove 11 during the linear sliding process of the locking seat 31. This causes the locking seat 31 and the mating seat 32 to rotate clockwise around the axis of the rod 42 during the linear sliding process. Through the transmission of the mating seat 32, the tightening member 20 can be driven to rotate clockwise to gradually tighten the end of the rope. When the rope is fully tightened, the adjusting member 40 can self-lock at the current angle, preventing the locking seat 31 from reversing and causing the rope to loosen under external force.

[0102] The screw drive structure between the adjusting member 40 and the locking seat 31 of this application has high transmission accuracy. Since the spiral groove 11 is continuous, it can realize stepless adjustment of the end of the rope, especially the small angle adjustment between 0-30° of the end of the rope, and can arbitrarily adjust the tension of the rope after winding as needed.

[0103] The beneficial technical effects of the technical solutions provided in this application include:

[0104] In this embodiment, an adjusting member 40 is designed to be threadedly engaged with the locking seat 31, so that a screw drive structure is formed between the locking seat 31 and the adjusting member 40. The mating seat 32 is designed to be able to rotate unidirectionally with the locking seat 31 around the axial direction of the locking member 30. The mating seat 32 and the tightening member 20 are designed to be able to slide relative to each other along the axis of the tightening member 20 and cannot rotate relative to each other. When the tightening member 20 is rotated, the mating seat 32 can rotate unidirectionally around the axis of the locking seat 31 under the constraint of the tightening member 20, thereby preventing the rope from becoming slack as it is gradually wound around the outer wall of the tensioning device. Then, by rotating the adjusting member 40, the locking member 30 can be driven to move along the axis closer to the tightening member 20 and rotate relative to the winding member 10. Through the transmission of the locking member 30, the tightening member 20 can be driven to rotate around its own axis to tighten the end of the rope. Utilizing the high precision and high stability of the screw drive structure, the angle adjustment accuracy and stability of the locking member 30 and the tightening member 20 during rotation can be improved. Furthermore, utilizing the self-locking characteristic of the screw drive structure, the locking member 30 can achieve self-locking on the adjusting member 40, preventing the locking member 30 from sliding downward and causing the tightening member 20 to rotate in the opposite direction and the rope to become slack. This application enables stepless adjustment of the rope tension, allowing the tension of the rope after winding to be adjusted arbitrarily as needed.

[0105] The engagement of the protruding structure 313 and the spiral groove 11 allows the spiral groove 11 to guide and limit the movement trajectory of the locking member 30. When the adjusting member 40 is rotated, the locking member 30 is driven to move linearly along the adjusting member 40. During the movement of the locking member 30, due to the limiting effect of the spiral groove 11 on the protruding structure 313 on the locking member 30, the locking member 30 is also subjected to a force that rotates around the adjusting member 40 during its axial movement. This changes the movement trajectory of the locking member 30, allowing it to achieve synchronous movement of rotation around the adjusting member 40 and sliding along the adjusting member 40 under the drive of the adjusting member 40. During this process, the mating seat 32 and the tightening member 20 slide relative to each other along the axial direction. The tightening member 20 rotates synchronously with the mating seat 32, thereby driving the tightening member 20 to rotate synchronously and gradually tighten the end of the rope, achieving stepless adjustment of the tension after the rope is wound.

[0106] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0107] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0108] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0109] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0110] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A tensioning device, characterized in that, include: The wound part is hollow inside; The tightening element, rotatably disposed at the end of the winding element, is configured to fix one end of the rope; A locking element, disposed inside the winding element, includes a locking seat and a mating seat. The mating seat is configured to rotate unidirectionally about the axis of the locking seat. The mating seat can rotate synchronously with the tightening element and can slide relative to the tightening element along the axis of the locking element. An adjusting member is inserted inside the winding member. The first end of the adjusting member is threadedly engaged with the locking seat to form a screw drive structure, and the second end is rotatably connected to the tightening member. At least one spiral groove is provided on the inner wall of the winding member or the outer wall of the locking seat. A protrusion structure that can slide along the spiral groove is provided between the locking seat and the winding member. The adjusting member is used to drive the locking seat and the mating seat to move closer to the tightening member along the axis and rotate relative to the winding member at the same time, so that the mating seat drives the tightening member to rotate around its own axis.

2. The tensioning device according to claim 1, characterized in that, The protruding structure is integrated into the outer wall surface of the locking seat or integrated into the inner wall surface of the winding component; Alternatively, the protrusion structure is independent of the locking seat and the winding member, and is clamped and limited between the locking seat and the winding member, the protrusion structure having a degree of freedom to roll relative to the locking seat and the winding member.

3. The tensioning device according to claim 1, characterized in that, The tensioning device further includes a mounting base installed at the end of the winding member away from the tightening member, the first end of the adjusting member being rotatably connected to the mounting base, and the second end of the adjusting member being exposed outside the tightening member.

4. The tensioning device according to claim 3, characterized in that, The adjusting member includes a rod and a head, and the tightening member has a limiting groove, with the head rotatably disposed within the limiting groove.

5. The tensioning device according to claim 1, characterized in that, The adjusting element includes a self-locking screw.

6. The tensioning device according to claim 1, characterized in that, The portion of the tightening member that extends into the winding member is connected to the mating seat via a sliding key.

7. The tensioning device according to claim 6, characterized in that, The tightening member includes a main body portion rotatably disposed at the end of the winding member and a connecting portion disposed on the bottom surface of the main body portion and extending along the axis of the winding member. The inner wall of the connecting portion encloses a sliding space, and a portion of the mating seat is slidably disposed within the sliding space.

8. The tensioning device according to claim 7, characterized in that, It also includes a bearing, which is sandwiched between the connecting part and the winding member, and the tightening member is fixedly connected to the inner ring of the bearing.

9. The tensioning device according to claim 1, characterized in that, It also includes at least one of the following: Both the mating seat and the locking seat include end-face ratchet; The tensioning device further includes an elastic element, which abuts against the tensioning element and the mating seat; The outer wall of the winding component has multiple grooves arranged at axial intervals.

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