Supporting mechanism and tension body builder

Abstract

The invention relates to the technical field of fitness equipment, and particularly discloses a supporting mechanism and a tension fitness device.The supporting mechanism comprises a support and a moving part, the support comprises a first frame body, a second frame body and a third frame body which are connected in sequence, and the first frame body can be used for arranging a motion platform; sliding grooves are formed in the surface, facing the third frame body, of the first frame body, the surface, facing the first frame body, of the third frame body and the surface, facing the moving platform, of the second frame body, guide rails are arranged on the side walls, located on the two sides of a notch, of the sliding grooves, and the moving pieces are arranged in the sliding grooves and can move along the guide rails. The guide rails on the two sides can both erect and support the moving part, the matching area of the moving part and the guide rails is increased, stress between the moving part and the guide rails can be dispersed, deformation of a sliding groove opening is reduced, the moving stability of the moving part along the guide rails is improved, and shaking displacement or deviation is reduced. And the position of the moving part can be easily adjusted without dismounting, so that the moving part can be quickly switched to different training positions, and manual adjustment and dismounting operations are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, and in particular to a supporting mechanism and a tension fitness device. Background Art

[0002] Rope-type strength training equipment such as tension fitness equipment all use a wire tension structure to provide resistance. One end of the tension wire is connected to the motor, and the other end of the tension wire is pulled out by the user for strength training. If the user wants to change the wire outlet from the bottom to the vertical side, he can only adjust the rope outlet position and change the wire end from the bottom position to the vertical position before performing vertical pulling training. After adjusting the position of the wire end and ensuring that the wire end is fixed, pulling is performed to achieve training. The force transmission efficiency between the motor and the tension wire is low, the tension wire is easily worn, and the service life is shortened.

[0003] In the related art, the pull fitness equipment usually adopts a fixed or frequently disassembled adjustment method to change the position of the output point. The user needs to manually adjust the fixing device on the support arm or pedal to change the training mode. This adjustment method is not only cumbersome, time-consuming and labor-intensive, but may easily cause damage to the equipment due to improper operation. In addition, during the training process, the fixed position is limited and it is easily restricted by a single mode. It can only fix the output point and is difficult to move with the pulling point. Summary of the invention

[0004] The object of the present invention is to provide a supporting mechanism and a tension fitness machine to solve the technical problems of the tension fitness machine in the related art that the force output point is difficult to adjust and the fixing position is limited.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a support mechanism, comprising:

[0007] A bracket, the bracket comprising a first frame, a second frame and a third frame connected in sequence, the first frame being capable of being set up on a moving platform, the third frame being located above the first frame, the second frame being arranged between the first frame and the third frame, a slide groove being arranged on a surface of the first frame facing the third frame, a surface of the third frame facing the first frame and a surface of the second frame facing the moving platform, the slide grooves between adjacent frames being continuously connected, the slide groove having a notch, guide rails being arranged on the side walls of the slide groove located on both sides of the notch, the guide rails being arranged extending along the extending direction of the slide groove, and the bracket being used for setting up a tension line;

[0008] A moving member, wherein the moving member is partially disposed in the slide groove, and the moving member can move along the guide rail, the pulling wire can be passed through the moving member, and the pulling wire can be pulled out by a user at the moving member.

[0009] In one embodiment, the moving member includes a roller and a rotating shaft. The roller is in rolling connection with the guide rail. One end of the rotating shaft is rotatably connected to the roller, and the other end passes through the notch.

[0010] In one embodiment, the guide rail is a strip-shaped protrusion, and an annular groove is provided in the circumferential direction of the roller. The roller can be connected to the strip-shaped protrusion through the annular groove, and the roller can roll along the strip-shaped protrusion; and / or,

[0011] The guide rail is a strip-shaped groove, and an annular protrusion is provided in the circumferential direction of the roller. The roller can be connected to the strip-shaped groove through the annular protrusion, and the roller can roll along the strip-shaped groove.

[0012] In one embodiment, one roller is provided, and both sides of the roller are respectively connected to the corresponding side guide rails; and / or,

[0013] A plurality of rollers are provided. Some of the plurality of rollers are connected to the guide rails on one side wall of the chute, and the other part of the rollers are connected to the guide rails on the other side wall of the chute.

[0014] In one embodiment, one or more rollers are provided on the same rotating shaft, and one or more guide rails are provided on the same side wall of the chute;

[0015] Wherein, when a plurality of rollers on the same rotating shaft and a plurality of guide rails on the same side wall of the chute are provided, the rollers and the guide rails are arranged in one-to-one correspondence, and the plurality of rollers are all connected to the corresponding guide rails;

[0016] The plurality of rollers on the same rotating shaft can all be provided with the annular groove, or, the plurality of rollers can all be provided with the annular protrusion, or, some of the plurality of rollers are provided with the annular groove, and the other part of the rollers are provided with the annular protrusion.

[0017] In one embodiment, a plurality of locking positions are provided on the bracket and / or in the chute, and the plurality of locking positions are arranged at intervals along the extending direction of the chute;

[0018] The moving member further includes a connecting frame and a locking member. The rotating shaft is connected to the connecting frame. The connecting frame can be penetrated by the tension wire. The locking member is arranged on the connecting frame, and the locking member can selectively connect and lock or separate and unlock with the locking position.

[0019] In one embodiment, the locking member is a pin rod, and the pin rod is slidably connected to the connecting frame; an elastic member is disposed between the pin rod and the connecting frame, and the elastic member is configured to apply a force to the pin rod toward the locking position; and / or, a through hole is provided on the connecting frame, the pin rod is inserted into the through hole, a limiting block is provided on the side wall of the pin rod, a limiting track is provided on a partial circumferential inner wall of the through hole, the limiting block can move along with the pin rod, and the limiting block can move into or out of the limiting track;

[0020] When the limiting block moves into the limiting track, the pin rod remains separated from the locking position;

[0021] When the limiting block moves out of the limiting track, the pin rod can axially move, approaching or departing from the locking position.

[0022] In one embodiment, the first frame body is rotatably connected to the second frame body, and the first frame body can rotate toward or away from the second frame body; and / or, the second frame body is rotatably connected to the third frame body, and the third frame body can rotate toward or away from the second frame body;

[0023] Wherein, at the joint position of the chute on the first frame body and the chute on the second frame body, the end cross-sectional dimensions of the chute on the first frame body and the end cross-sectional dimensions of the chute on the second frame body gradually increase outward in the extending direction, forming an outward expanding opening structure; and / or,

[0024] At the joint position of the chute on the second frame body and the chute on the third frame body, the end cross-sectional dimensions of the chute on the second frame body and the end cross-sectional dimensions of the chute on the third frame body gradually increase outward in the extending direction.

[0025] In one embodiment, the joint positions of the first frame body and the second frame body and the joint positions of the second frame body and the third frame body are all transitioned by smooth arc surfaces; and / or,

[0026] A first guide wheel is provided at a position where the first frame body is away from the second frame body, a second guide wheel is provided at a position where the first frame body is connected to the second frame body, a third guide wheel is provided at a position where the second frame body is connected to the third frame body, a fourth guide wheel is provided at a position where the third frame body is away from the second frame body, and the first guide wheel, the second guide wheel, the third guide wheel, and the fourth guide wheel can erect the tension wire.

[0027] In a second aspect, the present invention provides a tensile fitness device, which includes a support mechanism, a movement platform, a tensile wire, a pulley assembly, and a rotational drive member in any of the above solutions. The movement platform is arranged on the support of the support mechanism, the rotational drive member is arranged on the support, the pulley assembly is arranged on the moving member, the tensile wire can be partially bent to form a traction portion for a user to pull, one end of the tensile wire on one side of the traction portion passes through the pulley assembly and can be wound around the drive end of the rotational drive member, and the other end of the tensile wire on the other side of the traction portion passes through the pulley assembly and can be connected to the support. The pulley assembly can move along the guide rail with the moving member.

[0028] The beneficial effects of the present invention are as follows:

[0029] The present invention provides a support mechanism and a tensile fitness device. The support mechanism includes a support and a moving member. Both sides of the moving member can be connected to the guide rails on both sides of the notch. Both guide rails can support the moving member, increasing the cooperation area between the moving member and the guide rails, dispersing the stress between the moving member and the guide rails, reducing the deformation of the notch of the chute, improving the stability of the movement of the moving member along the guide rail, and reducing shaking, displacement or deviation. By moving the moving member in the chute, the position of the moving member can be easily adjusted without disassembly, so as to quickly switch to different training positions, reducing cumbersome manual adjustment and disassembly, greatly simplifying the operation process, and improving the fitness efficiency. The first frame body, the second frame body and the third frame body are segmented and bent, which can increase the overall structural strength and stability of the support, and also improve the setting angle of the chute and the diversity of tensile training. The sliding design of the moving member along the guide rail allows the tensile wire to automatically adjust the angle according to the user's movement, and the tensile wire can move smoothly following the movement, improving the alignment degree between the force output direction and the user's force application direction, providing a natural and smooth movement experience, and enhancing the diversity and effect of training. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic position diagram of the support mechanism on the tensile fitness device in an embodiment of the present invention;

[0031] Figure 2 It is a schematic structural diagram of the support in an embodiment of the present invention;

[0032] Figure 3 It is a schematic structural diagram of the support mechanism when a single roller is provided in an embodiment of the present invention;

[0033] Figure 4 It is a schematic structural diagram of the support mechanism when multiple rollers are provided in an embodiment of the present invention;

[0034] Figure 5 It is a schematic position diagram of the locking member in an embodiment of the present invention;

[0035] Figure 6 Schematic diagram of the pulling wire being pulled out from the moving part in the embodiment of the present invention;

[0036] Figure 7 Schematic diagram of the position of the limiting track in the embodiment of the present invention.

[0037] In the figure:

[0038] 1. Bracket; 11. First frame body; 12. Second frame body; 13. Third frame body; 14. Chute; 15. Guide rail; 16. Locking position; 171. First guide wheel; 172. Second guide wheel; 173. Third guide wheel; 174. Fourth guide wheel;

[0039] 2. Moving part; 21. Roller; 211. Annular groove; 22. Rotating shaft;

[0040] 3. Connecting frame; 31. Through hole; 32. Limiting track;

[0041] 4. Locking part; 41. Limiting block;

[0042] 5. Moving platform; 6. Pulling wire; 61. Traction part; 62. Movable pulley; 63. Pulling rod; 7. Pulley assembly; 8. Rotating driving part. Detailed implementation manners

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0044] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include contact between the first and second features through additional features therebetween rather than direct contact. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "left" and "right" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0047] Such as Figures 1 to 3As shown in the figure, an embodiment of the first aspect of the present invention provides a support mechanism, which includes a bracket 1 and a moving member 2. The bracket 1 includes a first frame body 11, a second frame body 12, and a third frame body 13 that are connected in sequence. The first frame body 11 can be used for the movement platform 5 to be arranged, that is, the first frame body 11 can serve as a base for the movement platform 5 to be connected. The third frame body 13 is located above the first frame body 11 and can be regarded as the top support. The second frame body 12 is arranged between the first frame body 11 and the third frame body 13 to play an intermediate transition and support role. Chutes 14 are provided on the surface of the first frame body 11 facing the third frame body 13, on the surface of the third frame body 13 facing the first frame body 11, and on the surface of the second frame body 12 facing the movement platform 5. The chutes 14 between adjacent frame bodies are continuously joined, ensuring the smoothness and continuity of the movement of the moving member 2 when moving up and down, ensuring the smooth transition of the sliding of the moving member 2 between different frame bodies, and reducing the possible jamming or shaking caused by the breakpoints of the chutes 14. The bracket 1 is used for installing a tension wire 6, and the tension wire 6 can be arranged along the extension direction of the chute 14. The chute 14 has a notch, which is convenient for the moving member 2 to be connected to external follower components such as the tension wire 6 or a pulley assembly 7 to drive the follower components to move together. Guide rails 15 are provided on the side walls of the chute 14 on both sides of the notch, and the guide rails 15 extend along the extension direction of the chute 14, ensuring the guiding and stability of the moving member 2 during movement and preventing it from deviating or shaking during movement. Part of the moving member 2 is arranged in the chute 14, and the moving member 2 can move along the guide rail 15. The tension wire 6 can pass through the moving member 2, and the tension wire 6 can be pulled out by the user at the moving member 2. When the user applies a force to the tension wire 6, the moving member 2 can follow the movement under the action of the force applied to the tension wire 6 to adapt to different tensile training actions of the user.

[0048] With such a setting, when the user pulls the tension wire 6, the moving member 2 can be forced to slide along the guide rail 12 in the chute 11. Both sides of the moving member 2 can be connected to the guide rails 15 on both sides of the notch. Both guide rails 15 can support the moving member 2, increasing the mating area between the moving member 2 and the guide rail 15, dispersing the stress between the moving member 2 and the guide rail 15, reducing the deformation of the notch of the chute 14, improving the stability of the moving member 2 moving along the guide rail 15, and reducing shaking, displacement or deviation. By moving the moving member 2 in the chute 14, the moving member 2 can easily adjust its position without being disassembled, so as to quickly switch to different training positions, reducing cumbersome manual adjustment and disassembly and assembly, greatly simplifying the operation process and improving the fitness efficiency. The first frame body 11, the second frame body 12 and the third frame body 13 are set with segmented bending, which can increase the overall structural strength and stability of the bracket 1, and can also improve the setting angle of the chute 14 and the diversity of tensile training. The sliding design of the moving member 2 along the guide rail 15 allows the tension wire 6 to automatically adjust the angle according to the user's movement. The tension wire 6 can follow smoothly, improving the alignment degree between the output force direction and the user's force application direction, providing a natural and smooth movement experience, enhancing the diversity and effect of training, and solving the technical problems of inconvenient adjustment of the output point of the tensile fitness device and limited fixed position in the related art.

[0049] Optionally, the chute 14 can be arranged on the surface of the first frame body 11 facing the third frame body 13, the surface of the third frame body 13 facing the first frame body 11, and the surface of the second frame body 12 facing the exercise platform 5. Or, the chute 14 can also be arranged on the side walls of the bracket 1 on one or both sides of the exercise platform 5. The content of this embodiment is mainly based on the situation where the chute 14 is arranged on the surface of the first frame body 11 facing the third frame body 13, the surface of the third frame body 13 facing the first frame body 11, and the surface of the second frame body 12 facing the exercise platform 5. An installation opening can be arranged at the end position of the chute 14 on the first frame body 11 or the third frame body 13. The installation opening can allow the moving member 2 to enter and exit, so that the moving member 2 can be loaded into the chute 14 or removed from the chute 14. The material of the bracket 1 can be selected as a material with high hardness and low friction coefficient, such as ceramics or special alloys, to further reduce wear and improve sliding stability and movement accuracy.

[0050] Optionally, the lengths of the first frame body 11, the second frame body 12 and the third frame body 13 can be adjusted. For example, the first frame body 11, the second frame body 12 and the third frame body 13 can be designed as telescopic frames, allowing the user to adjust the length of the frame body according to different training needs or space limitations, and then adjust the corresponding length of the chute 14, increasing the flexibility and space applicability of the support mechanism.

[0051] Optionally, the moving member 2 may move along the guide rail 15 in a manner that is not limited to sliding or rolling. For example, the moving member 2 may slide along the guide rail 15, and the cross-section of the matching position of the guide rail 15 and the moving member 2 may be, but not limited to, a T-shaped or dovetail-shaped, so as to reduce the separation of the moving member 2 from the guide rail 15 and improve the running stability. Alternatively, the moving member 2 may roll along the guide rail 15, for example, the moving member 2 may be a roller 21 or a spherical structure, so as to reduce the friction between the moving member 2 and the guide rail 15, reduce wear, and improve the movement accuracy.

[0052] like Figures 1 to 3 As shown, in some embodiments, the mobile member 2 comprises a roller 21 and a rotating shaft 22, the roller 21 is connected to the guide rail 15 in a rolling manner, one end of the rotating shaft 22 is connected to the roller 21 in a rotational manner, and the other end passes through the notch, so that, by the rolling connection of the roller 21 and the guide rail 15, compared with the sliding connection mode, the friction force of the mobile member 2 when moving in the chute 14 is greatly reduced, so that the sliding of the mobile member 2 is smoother and smoother, and the comfort and efficiency in the training process are improved. The rotating shaft 22 can support the roller 21 in rotation, so that the roller 21 rotates smoothly on the guide rail 15, so that the external follower can be connected to the mobile member 2 in a free rotation. When performing action training such as oblique or arm extension, the follower can automatically adjust the angle according to the hand or foot movement of the user, so that the tension line 6 can be consistent with the force direction, thereby more naturally simulating the motion trajectory of the human body, improving the sense of reality and effect of training.

[0053] The rolling connection between the roller 21 and the guide rails 15 on both sides, in conjunction with the support of the rotating shaft 22, not only reduces the shaking during the movement and enhances the stability of the overall structure, but also the low friction design of the roller 21 and the guide rail 15 effectively prolongs the service life of the entire support mechanism and reduces the maintenance cost in long-term use. The rolling movement of the roller 21 on the guide rail 15 reduces the direct contact between the tension line 6 and the guide rail 15 and other guide members, reduces the wear of the tension line 6 during the movement, prolongs its service life, and also enables the tension line 6 to be smoothly pulled and released through the moving part 2, avoiding training interruptions caused by wear or jamming.

[0054] When switching from one training mode to another, for example, switching from horizontal training to high-position pull-down, the movable member 2 can smoothly transition along the guide rail 15, and the combination of the roller 21 and the rotating shaft 22 can enable smooth movement between different training sections, reducing the adjustment time during the switching process and improving the continuity and efficiency of the training.

[0055] Since the roller 21 slides more smoothly on the guide rail 15, the rotating shaft 22 allows the external follower to freely adjust its position. This design significantly improves the user's interactive experience, making the operation of the device more intuitive and easy, and the user can maintain good control and balance even under high-intensity training.

[0056] Optionally, the roller 21 can be made of a material with high wear resistance and low friction coefficient, such as polyurethane or high-performance plastic, to reduce wear between the roller 21 and the guide rail 15 and improve the service life of the roller 21. The rotating shaft 22 can be made of high-strength alloy material to withstand the stress during high-intensity training. At the same time, bearings are added at the connection between the rotating shaft 22 and the roller 21 to make the rotation smoother and reduce power loss.

[0057] Optionally, the rotating shaft 22 can be designed to be adjustable in length. For example, the rotating shaft 22 can be a telescopic rod structure, or multiple extension rods can be detachably arranged at the end of the rotating shaft 22. The extension rods can be selected and installed according to the user's usage needs, allowing the user to adjust the connection point of the external follower according to their own training habits or body size to achieve a more personalized training experience. A buffer pad is installed at the contact between the roller 21 and the guide rail 15 to reduce vibration and noise during movement and improve the comfort during training. A safety protective cover can be added at the connection between the roller 21 and the rotating shaft 22 or at the opening of the chute 14 to prevent the entanglement of clothes or hair during training and ensure the safety of the user.

[0058] As Figures 1 to 3 shown, in some embodiments, the guide rail 15 is a strip-shaped protrusion, and an annular groove 211 is provided in the circumferential direction of the roller 21. The roller 21 can be connected to the strip-shaped protrusion through the annular groove 211, and the roller 21 can roll along the strip-shaped protrusion. And / or, the guide rail 15 is a strip-shaped groove, and an annular protrusion is provided in the circumferential direction of the roller 21. The roller 21 can be connected to the strip-shaped groove through the annular protrusion, and the roller 21 can roll along the strip-shaped groove.

[0059] Optionally, the guide rail 15 is a strip-shaped protrusion, and an annular groove 211 is provided in the circumferential direction of the roller 21. The design of the annular groove 211 enables the roller 21 to tightly wrap the strip-shaped protrusion. On the basis of the rolling design, the strip-shaped protrusion can be inserted into the annular groove 211 of the roller 21, which can not only reduce the axial shaking and displacement of the roller 21, limit the shaking of the roller 21 in the direction perpendicular to the extension direction of the chute 14, further guide and limit the roller 21, effectively prevent the risk of derailment of the roller 21 under high-intensity training, ensure the safety and reliability of the equipment, but also reduce the friction during the movement of the roller 21, make the sliding of the moving member 2 in the chute 14 smoother, and improve the comfort and efficiency of training.

[0060] Through the connection between the annular groove 211 of the roller 21 and the strip-shaped protrusion, the movement of the roller 21 is not restricted by direction, and it can adapt to the multi-directional movement of the equipment from the horizontal section to the vertical section and then to the top section, thereby enhancing the flexibility of the follow-up training and ensuring that the tension line 6 can maintain stable and smooth output in different training modes.

[0061] Optionally, the guide rail 15 is a strip-shaped groove, and an annular protrusion is provided on the circumferential direction of the roller 21. The cooperative design of the annular protrusion and the strip-shaped groove can provide accurate guidance for the roller 21. Even when moving quickly or the moving direction changes, the roller 21 can stably move along the predetermined path, reducing the performance degradation caused by deviation, enabling the moving member 2 to quickly switch between different training modes and accurately position, thereby improving the adaptability and versatility of the fitness equipment and providing a more rich and comprehensive training experience for users.

[0062] Among them, the edge of the annular protrusion can be designed as a smooth arc surface. When the roller 21 contacts the guide rail 15, it can provide a certain buffering and guiding effect, reduce local wear and impact, extend the service life of the roller 21 and the guide rail 15, and reduce the maintenance frequency and cost of the equipment. The support mechanism of this embodiment not only significantly improves the smoothness and stability of movement, but also enhances the durability of the equipment and the safety guarantee for users, enables the fitness equipment to smoothly transition between multiple training modes, improves the convenience and flexibility of training, and meets the seamless switching of different training requirements, thereby providing a more efficient and safe fitness experience for users.

[0063] Optionally, the cross-section of the roller 21 in the direction perpendicular to the guide rail 15 can be designed as a polygon or an ellipse to adapt to the special shape of the guide rail 15, enhance the guiding performance, reduce lateral shaking, and improve the accuracy and comfort of movement.

[0064] As Figures 1 to 4 shown, in some embodiments, the guide rail 15 is provided on the two side walls of the chute 14. Among them, one roller 21 is provided, and both sides of the roller 21 are respectively connected to the corresponding side guide rail 15; and / or, multiple rollers 21 are provided, and a part of the multiple rollers 21 are connected to the guide rail 15 on one side wall of the chute 14, and the other part of the rollers 21 are connected to the guide rail 15 on the other side wall of the chute 14. By arranging the guide rail 15 on the two side walls of the chute 14 and ensuring the connection between the roller 21 and the guide rail 15 in this embodiment, the stability and controllability of the moving member 2 during movement are effectively enhanced. Especially during dynamic or high-intensity training, the shaking and deviation during the movement can be significantly reduced, improving the safety and effect of training.

[0065] Optionally, one roller 21 is provided, and the design of connecting the roller 21 to the guide rails 15 on both sides makes the load distribution more uniform, thereby improving the load-bearing capacity of the moving member 2, enabling the roller 21 to maintain linear motion during rolling, reducing axial shaking, and improving stability and reliability.

[0066] Optionally, multiple rollers 21 are provided, and multiple rollers 21 can be connected to the same connecting frame 3 and other frames. The connection design of multiple rollers 21 and guide rails 15 can make multiple rollers 21 roll along the guide rails 15 of the corresponding sides respectively. When the user pulls the mobile member 2 on the motion platform 5, part of the multiple rollers 21 is closely abutted against the guide rails 15 on one side, bearing the main moving stress, and the rollers 21 of the other part roll along the guide rails 15 on the other side, which can perform a guiding effect, reduce the force of a single roller 21, reduce the circumferential wear of a single roller 21, improve the accuracy of movement, and can more accurately control the movement track of the mobile member 2. And it is possible to form a multi-point rolling support, improve the stability of the mobile member 2 in the chute 14, especially when bearing non-uniform loads, multiple rollers 21 can better disperse stress and reduce the shaking caused by local force. Multiple rollers 21 can also be staggered up and down one by one, which can make the moving process of the mobile member 2 more stable and reduce swinging. For example, three rollers 21 can be provided, two rollers 21 are rollingly connected to the guide rail 15 on the side close to the moving platform 5, and the other roller 21 is rollingly connected to the guide rail 15 on the side away from the moving platform 5. The rolling connection points of the three can be distributed in a triangular shape, which can disperse stress. Compared with the case of one or two rollers 21, providing three or more rollers 21 can make the moving process of the moving part 2 more stable and reduce swinging.

[0067] Optionally, the surface of the roller 21 and the surface of the guide rail 15 may be provided with a wear-resistant layer, which may be, but is not limited to, a carbon fiber layer or a Teflon coating, to further reduce wear and extend the service life. A linkage structure such as a connecting rod may be provided between the multiple rollers 21 connected to the same side guide rail 15, so that the multiple rollers 21 can roll synchronously, reduce shaking during movement, and improve the movement stability of the moving part 2.

[0068] Optionally, a buffer component such as a spring, a buffer pad, a cylinder or a hydraulic cylinder may be provided between the roller 21 connected to the one side guide rail 15 and the roller 21 connected to the other side guide rail 15, which can not only make the roller 21 fit more closely with the corresponding side guide rail 15 and reduce separation, but also absorb the impact during movement and reduce noise.

[0069] Optionally, the roller 21 and the guide rail 15 can be made of magnetic material or have small permanent magnets or electromagnets built in, which can achieve non-contact connection between the roller 21 and the guide rail 15, forming a magnetic suspension design, greatly reducing friction, improving the movement speed and accuracy of the roller 21, reducing noise and vibration, and improving the comfort of training. The roller 21 and the guide rail 15 can also automatically adjust the magnetic strength according to different training modes by replacing magnets or increasing or decreasing current to adapt to different movement resistance requirements.

[0070] like Figures 1 to 4As shown, in some embodiments, one or more rollers 21 are provided on the same rotating shaft 22, and one or more guide rails 15 are provided on the same side wall of the chute 14. Wherein, when there are multiple rollers 21 on the same rotating shaft 22 and guide rails 15 on the same side wall of the chute 14, the rollers 21 and the guide rails 15 are provided in a one-to-one correspondence, and the multiple rollers 21 are connected to the corresponding guide rails 15. The multiple rollers 21 of the same rotating shaft 22 can all be provided with an annular groove 211, or the multiple rollers 21 can all be provided with an annular protrusion, or a part of the multiple rollers 21 is provided with an annular groove 211, and another part of the rollers 21 is provided with an annular protrusion, that is, the rollers 21 on the same rotating shaft 22 can be uniformly provided with annular grooves 211 or annular protrusions, or the annular grooves 211 and the annular protrusions can be staggered, which can combine the guiding and bearing advantages of the annular grooves 211 and the annular protrusions to improve the stability of the moving member 2 moving along the guide rail 15.

[0071] In this way, when one or more rollers 21 are arranged on the same rotating shaft 22, the same number of guide rails 15 should also be arranged on the same side wall of the slide groove 14 to achieve a one-to-one correspondence between the rollers 21 and the guide rails 15. This can significantly improve the stability of the movement of the moving part 2 in the slide groove 14, especially when it is subjected to a large pulling force or moves quickly. The rollers 21 with multi-point contact can evenly distribute the load, reduce the shaking of the moving part 2 during movement and the wear rate of each contact point, and improve the safety and comfort of training.

[0072] Either an annular groove 211 or an annular protrusion may be separately provided on multiple rollers 21, or an annular groove 211 may be provided on a part of the rollers 21 and annular protrusions may be provided on another part of the rollers 21. This diverse configuration can adapt to different types of guide rail 15 designs, ensuring that the rollers 21 roll stably on the guide rail 15, while providing greater freedom and customization possibilities for the design.

[0073] The connection between the roller 21 and the guide rail 15 in this embodiment, whether through the annular groove 211 and the strip protrusion, or the annular protrusion and the strip groove, can ensure that the roller 21 rolls smoothly and unimpeded on the guide rail 15, reduce resistance and energy loss during movement, improve the overall responsiveness of the support mechanism and the smoothness of operation, and enable users to focus more on the training effect when performing strength training.

[0074] like Figures 1 to 3As shown, in some embodiments, the first frame body 11 is rotatably connected to the second frame body 12, and the first frame body 11 can rotate towards or away from the second frame body 12; and / or, the second frame body 12 is rotatably connected to the third frame body 13, and the third frame body 13 can rotate towards or away from the second frame body 12. The rotation connection between the first frame body 11 and the second frame body 12 and between the second frame body 12 and the third frame body 13 allows the first frame body 11 to rotate towards or away from the second frame body 12. Similarly, the third frame body 13 can also rotate towards or away from the second frame body 12, enabling the adjacent frame bodies to rotate and fold, and adjust at multiple angles, so as to adapt to different training movements and usage space requirements.

[0075] Wherein, at the joint position of the chute 14 on the first frame body 11 and the chute 14 on the second frame body 12, the end cross-sectional dimensions of the chute 14 on the first frame body 11 and the end cross-sectional dimensions of the chute 14 on the second frame body 12 gradually increase outward in the extending direction, forming an outward-expanded mouth structure; and / or, at the joint position of the chute 14 on the second frame body 12 and the chute 14 on the third frame body 13, the end cross-sectional dimensions of the chute 14 on the second frame body 12 and the end cross-sectional dimensions of the chute 14 on the third frame body 13 gradually increase outward in the extending direction, and can also form an outward-expanded mouth structure.

[0076] The outward-expanded mouth structure can reduce the jamming phenomenon of the slider at the joint position of the chute 14. When the slider moves to the joint of the chute 14, the outward-expanded mouth structure can provide additional guiding space to avoid the slider being stuck due to the sudden change of the end face of the chute 14. The outward-expanded mouth structure can also enhance the stability of the slider at the joint of the chute 14. Even under high-speed or heavy-load conditions, the slider can smoothly transition without generating severe shaking or deviation, ensuring the smoothness and stability during the adjustment of the moving platform 5.

[0077] Optionally, an arc-shaped extension plate can be provided on one side of the end of the first frame body 11. The first frame body 11 can be rotatably connected to the side of the second frame body 12 through the arc-shaped extension plate. When the first frame body 11 and the second frame body 12 are deployed, the arc-shaped extension plate and the second frame body 12 are stacked, and the chutes 14 of the first frame body 11 and the second frame body 12 are continuously joined. When the first frame body 11 rotates relative to the second frame body 12, the arc-shaped extension plate can separate the first frame body 11 from the second frame body 12, so as to facilitate the first frame body 11 to approach and fit the second frame body 12.

[0078] Such as Figures 1 to 4As shown, in some embodiments, at the joint positions of the first frame body 11 and the second frame body 12, and at the joint positions of the second frame body 12 and the third frame body 13, smooth arc surface transitions are provided, reducing stress concentration, avoiding the possibility of cracks or damage at the frame body joints, being able to effectively disperse the load, avoiding local stress concentration, thereby enhancing the structural strength and durability of the entire support mechanism, and also making the movement of the moving member 2 between adjacent frame bodies smoother and avoiding jamming.

[0079] A first guide wheel 171 is provided at a position of the first frame body 11 away from the second frame body 12, a second guide wheel 172 is provided at the connection position of the first frame body 11 and the second frame body 12, a third guide wheel 173 is provided at the connection position of the second frame body 12 and the third frame body 13, a fourth guide wheel 174 is provided at a position of the third frame body 13 away from the second frame body 12, and the first guide wheel 171, the second guide wheel 172, the third guide wheel 173, and the fourth guide wheel 174 can erect the tension line 6.

[0080] Specifically, the tension line 6 has a first end and a second end arranged oppositely. The first end of the tension line 6 is wound around the driving end of the rotation driving member 8 and can be wound and released by the rotation driving member 8 to provide resistance. The rotation driving member 8 can be arranged at a position close to the connection position of the first frame body 11 and the second frame body 12 or close to the first guide wheel 171 and can be set according to the use requirements. The second end of the tension line 6 can be wound around the first guide wheel 171, the second guide wheel 172, the third guide wheel 173, and the fourth guide wheel 174 in sequence and then can be fixedly connected to the bracket 1 or wound back to the position of the rotation driving member 8, and can also be re - output after the rotation driving member 8 adjusts the tension. The first guide wheel 171, the second guide wheel 172, the third guide wheel 173, and the fourth guide wheel 174 are located outside the chute 11 and can avoid the moving member 2. The moving member 2 slides along the guide rail 12 in the chute 11 and can move to any adjacent two of the first guide wheel 171, the second guide wheel 172, the third guide wheel 173, and the fourth guide wheel 174 as needed.

[0081] As Figures 1 to 6 As shown, in some embodiments, a plurality of locking positions 16 are provided on the bracket 1 and / or in the chute 14, and the plurality of locking positions 16 are arranged at intervals along the extending direction of the chute 14. The moving member 2 further includes a connecting frame 3 and a locking member 4. The rotating shaft 22 is connected to the connecting frame 3, and the locking member 4 is arranged on the connecting frame 3. The locking member 4 can selectively connect and lock or separate and unlock with the locking position 16.

[0082] In this embodiment, a plurality of locking positions 16 are provided on the bracket 1 or within the sliding groove 14, enabling precise fixation of the moving member 2 at different positions. These locking positions 16 are spaced apart along the extending direction of the sliding groove 14, allowing the user to fix the pulley group mechanism at a suitable training position according to training requirements. Whether it is low-position, mid-position, or high-position downward pull training, it can be quickly adjusted and locked, enhancing the convenience and efficiency of training. This enables the moving member 2 not only to move freely within the sliding groove 14 for follow-up training but also to be locked through the locking member 4 and the locking positions 16 for fixed-point training, improving the diversity of training.

[0083] Optionally, the connection between the locking member 4 and the locking position 16 can be, but is not limited to, snap connection, threaded connection, or magnetic attraction connection. For example, the locking member 4 can be a strong magnet, and the locking position 16 can be designed as a magnetic metal plate or a magnetic coating. The user can quickly lock or unlock the locking member 4 with the adjacent locking position 16 by simply pushing or pulling, which is easy to operate and can also instantaneously fix the moving member 2 at different training positions, enhancing the accuracy and safety of training.

[0084] As Figures 1 to 6 shown, in some embodiments, the locking member 4 is a pin rod, and the pin rod is slidably connected to the connecting frame 3. An elastic member is provided between the pin rod and the connecting frame 3, and the elastic member is configured to apply a force towards the locking position 16 to the pin rod. When the pin rod moves to the locking position 16, the pin rod can automatically insert into the locking position 16 under the action of the elastic member, realizing the self-locking function, enabling stable fixation of the moving member 2, avoiding accidental movement or detachment, and allowing the user to perform fixed-point movement.

[0085] In some embodiments, a through hole 31 is provided on the connecting frame 3, the pin rod is inserted through the through hole 31, a limiting block 41 is provided on the side wall of the pin rod, and a limiting track 32 is provided on a part of the circumferential inner wall of the through hole 31. The limiting block 41 can move with the pin rod, and the limiting block 41 can move into or out of the limiting track 32. When the limiting block 41 moves into the limiting track 32, the pin rod remains separated from the locking position 16; when the limiting block 41 moves out of the limiting track 32, the pin rod can perform axial movement, approaching or departing from the locking position 16.

[0086] In this embodiment, a limiting block 41 is provided on the side wall of the pin rod, and a limiting track 32 is designed on a part of the circumferential inner wall of the through hole 31 on the connecting frame 3. When the limiting block 41 moves into the limiting track 32, the pin rod is limited and cannot move axially, thus remaining separated from the locking position 16 to achieve the unlocking function. The user can simply operate, such as rotating the pin rod, to move the limiting block 41 out of the limiting track 32, so that the pin rod can move freely in the axial direction, approaching or departing from the locking position 16 to achieve locking or unlocking. This enables the user to quickly operate when switching training positions, improves the switching efficiency of the training mode, and at the same time, mechanical limiting avoids excessive movement during the unlocking operation, enhancing the accuracy and safety of the operation.

[0087] Among them, the pin rod can be a straight rod, and the pin rod can be arranged along the depth direction of the sliding groove 11. Locking and unlocking operations can be performed by pushing, pulling or rotating the pin rod. Alternatively, the pin rod can also be a bent rod, such as an L-shaped rod. The through hole 31 can also be designed as a through hole with an L-shaped longitudinal section and the size of the through hole 31 is larger than that of the pin rod. The pin rod can perform locking and unlocking operations by sliding or slightly rotating in the through hole 31, so that the operating end of the pin rod can be located on one side of the connecting frame 3, reducing the positional interference with the tension line 6.

[0088] Such as Figures 1 to 6As shown in the figure, an embodiment of the second aspect of the present invention provides a tensile fitness device, which is characterized in that it includes the support mechanism, the movement platform 5, the tensile wire 6, the pulley assembly 7, and the rotation driving member 8 in any of the above embodiments. The movement platform 5 is arranged on the bracket 1 of the support mechanism, the rotation driving member 8 is arranged on the bracket 1, the pulley assembly 7 is arranged on the moving member 2, and the tensile wire 6 can be partially bent to form a traction part 61 for the user to pull. Optionally, a movable pulley 62 can be arranged at the traction part 61, the traction part 61 can be wound around the circumference of the movable pulley 62, and the center of the movable pulley 62 can be connected with a tensile rod 63 through a connecting rope. The user can pull the traction part 61 through the tensile rod 63, thereby pulling out the tensile wire 6. The rotation driving member 8 can wind and unwind the tensile wire 6. When the user performs different actions, the tensile wire 6 can apply a force to the moving member 2, driving the moving member 2 to follow along the chute 14. The end of the tensile wire 6 on one side of the traction part passes through the pulley assembly 7 and can be wound around the driving end of the rotation driving member 8, and the end of the tensile wire 6 on the other side of the traction part passes through the pulley assembly 7 and can be fixed to the bracket 1. The pulley assembly 7 can move along the guide rail 15 with the moving member 2. Two support mechanisms can be provided, and the two support mechanisms are respectively arranged on both sides of the movement platform 5. The moving members 2 on the two support mechanisms can be held by the user or connected to the same tensile rod 63. The user can pull the moving members 2 on both sides to move along the guide rail 15 in the chute 14 on the movement platform 5. When the user pulls the tensile wire 6 through the traction part, the moving member 2 will be stressed and move along the guide rail 15 in the chute 14 to follow and adapt to the user's force application angle for corresponding tensile training.

[0089] Among them, the pulley assembly 7 can include two pulleys, and the traction part of the tensile wire 6 can pass through between the two pulleys to form a loop with an opening to form a traction part for the user to pull. The end of the tensile wire 6 on one side of the traction part passes through one pulley and can be wound around the driving end of the rotation driving member 8. The end of the tensile wire 6 on the other side of the traction part passes through the other pulley and can be fixed to the bracket 1 or a fixed member such as a fixed pulley fixed on the bracket 1, or can be re-wound to the position of the rotation driving member 8 and re-output after the rotation driving member 8 adjusts the tension. When the moving member 2 moves to any position in the chute 14, the corresponding position of the tensile wire 6 can extend to form a corresponding traction part. Through the combination of the support mechanism and the pulley assembly 7, the tensile fitness device provides a variety of training mode options. The user can quickly adjust the device according to personal training goals and preferences to achieve personalized training. The rotation driving member 8 can include a reel and a motor connected in transmission, and the tensile wire 6 can be wound around the reel. The motor drives the reel to rotate to wind and unwind the tensile wire 6.

[0090] On one or both side walls of the bracket 1 located on one side of the moving platform 5, a chute 14 is provided, allowing the moving member 2 to freely move along the guide rail 15 within the chute 14, enabling the tension line 6 to flexibly adjust its position through the moving member 2. This not only enhances the versatility and adaptability of the device but also improves the efficiency of force transmission, reduces the wear of the tension line 6, and extends the service life of the device. At the same time, by providing the guide rail 15 within the chute 14, the stability of the moving member 2 and the smoothness of sliding are ensured, further enhancing the user experience.

[0091] Due to including the above-mentioned support mechanism, the tension fitness device of the embodiment of the present invention has all the advantages and beneficial effects of the above embodiments, which will not be elaborated here.

[0092] In summary, in combination with the above structure, the usage process of the tension fitness device is described as follows:

[0093] The chutes 11 on the first frame body 11, the second frame body 12, and the third frame body 13 of the bracket 1 can form three training strokes, and the moving member 2 can be switched arbitrarily within the three training strokes. Taking the bottom horizontal training stroke formed by the first frame body 11 as an example, the first end of the tension line 6 is wound around the rotating driving member 8, and the second end can be successively wound around the first guide wheel 171, the moving member 2, the second guide wheel 172, the third guide wheel 173, and then fixed to the fourth guide wheel 174. The user pulls the traction part 61 through the tension rod 63 and the movable pulley 62, thereby pulling out the tension line 6. The rotating driving member 8 can wind and unwind the tension line 6. When the user performs different actions, the tension line 6 can apply force to the moving member 2, driving the moving member 2 to move along with the chute 11. Through control components such as a touch screen, the output resistance of the rotating driving member 8 can be displayed or adjusted, thereby adjusting the training tension. The moving member 2 can be fixed in position on the chute 11 by locking the locking member 4 with the locking position 16 for fixed-point training. When it is necessary to switch the training stroke, unlock the locking member 4 from the locking position 16, and move the moving member 2 to the vertical section 112 or the top section 113 for corresponding stroke training. Each stroke can be locked or unlocked by the locking member 4 with the locking position 16 for corresponding fixed-point or follow-up training.

[0094] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A support mechanism, characterized in that, include: A support (1), the support (1) comprising a first frame (11), a second frame (12) and a third frame (13) connected in sequence, the first frame (11) being capable of being provided with a motion platform (5), the third frame (13) being located above the first frame (11), the second frame (12) being arranged between the first frame (11) and the third frame (13), the first frame (11) being provided on a surface facing the third frame (13), the third frame (13) being provided on a surface facing the third frame (13) (13) A slide groove (14) is provided on the surface of the first frame (11) and on the surface of the second frame (12) facing the moving platform (5), the slide grooves (14) between adjacent frames are continuously connected, the slide groove (14) has a notch, and the side walls of the slide groove (14) on both sides of the notch are provided with guide rails (15), and the guide rails (15) are extended along the extension direction of the slide groove (14), and the bracket (1) is used to set up the tension line (6); A moving part (2), wherein the moving part (2) is partially arranged in the sliding groove (14), and the moving part (2) can move along the guide rail (15), the moving part (2) can allow the tension line (6) to pass through, and the tension line (6) can be pulled out by a user at the moving part (2).

2. The support mechanism according to claim 1, characterized in that The moving member (2) comprises a roller (21) and a rotating shaft (22); the roller (21) is rollingly connected to the guide rail (15); one end of the rotating shaft (22) is rotationally connected to the roller (21), and the other end passes through the slot.

3. The support mechanism according to claim 2, characterized in that, The guide rail (15) is a strip-shaped protrusion, and an annular groove (211) is provided in the circumference of the roller (21), and the roller (21) can be connected to the strip-shaped protrusion through the annular groove (211), and the roller (21) can roll along the strip-shaped protrusion; and / or, The guide rail (15) is a strip-shaped groove, and an annular protrusion is provided on the circumference of the roller (21). The roller (21) can be connected to the strip-shaped groove via the annular protrusion, and the roller (21) can roll along the strip-shaped groove.

4. The support mechanism according to claim 3, characterized in that, The roller (21) is provided with one, and both sides of the roller (21) are respectively connected to the guide rail (15) on the corresponding side; and / or, A plurality of rollers (21) are provided, and a portion of the rollers (21) are connected to the guide rail (15) on one side wall of the slide groove (14), and another portion of the rollers (21) are connected to the guide rail (15) on the other side wall of the slide groove (14).

5. The support mechanism according to claim 3 or 4, characterized in that One or more rollers (21) are provided on the same rotating shaft (22), and one or more guide rails (15) are provided on the same side wall of the sliding groove (14); Wherein, when there are multiple rollers (21) on the same rotating shaft (22) and multiple guide rails (15) on the same side wall of the slide groove (14), the rollers (21) and the guide rails (15) are arranged in a one-to-one correspondence, and the multiple rollers (21) are all connected to the corresponding guide rails (15); The plurality of the rollers (21) on the same rotating shaft (22) can all be provided with the annular grooves (211), or, the plurality of the rollers (21) can all be provided with the annular protrusions, or, some of the plurality of the rollers (21) are provided with the annular grooves (211), and the other part of the plurality of the rollers (21) are provided with the annular protrusions.

6. The support mechanism according to claim 2, wherein A plurality of locking positions (16) are provided on the bracket (1) and / or in the sliding groove (14), and the plurality of locking positions (16) are arranged at intervals along the extending direction of the sliding groove (14); The moving member (2) further includes a connecting frame (3) and a locking member (4). The rotating shaft (22) is connected to the connecting frame (3). The connecting frame (3) can be penetrated by the tension wire (6). The locking member (4) is arranged on the connecting frame (3), and the locking member (4) can selectively connect and lock or separate and unlock with the locking position (16).

7. The support mechanism according to claim 6, characterized in that, The locking member (4) is a pin rod, and the pin rod is slidably connected to the connecting frame (3); An elastic member is arranged between the pin rod and the connecting frame (3), and the elastic member is configured to be able to apply a force to the pin rod towards the locking position (16); And / or, a through hole (31) is provided on the connecting frame (3). The pin rod is penetrated in the through hole (31). A limiting block (41) is arranged on the side wall of the pin rod. A limiting track (32) is arranged on a part of the circumferential inner wall of the through hole (31). The limiting block (41) can move along with the pin rod, and the limiting block (41) can move into or out of the limiting track (32); When the limiting block (41) moves into the limiting track (32), the pin rod and the locking position (16) remain in a separated state; When the limiting block (41) moves out of the limiting track (32), the pin rod can perform axial movement, approaching or departing from the locking position (16).

8. The support mechanism according to claim 1, wherein The first frame body (11) is rotatably connected to the second frame body (12), and the first frame body (11) can rotate towards or away from the second frame body (12); and / or, the second frame body (12) is rotatably connected to the third frame body (13), and the third frame body (13) can rotate towards or away from the second frame body (12); Wherein, at the joint position of the sliding groove (14) on the first frame body (11) and the sliding groove (14) on the second frame body (12), the end cross-sectional dimension of the sliding groove (14) on the first frame body (11) and the end cross-sectional dimension of the sliding groove (14) on the second frame body (12) gradually increase outwards in the extending direction, forming an outward expanding opening structure; and / or, At the joint position of the sliding groove (14) on the second frame body (12) and the sliding groove (14) on the third frame body (13), the end cross-sectional dimension of the sliding groove (14) on the second frame body (12) and the end cross-sectional dimension of the sliding groove (14) on the third frame body (13) gradually increase outwards in the extending direction.

9. The support mechanism according to claim 1, characterized in that At the joint positions between the first frame body (11) and the second frame body (12), and between the second frame body (12) and the third frame body (13), smooth arc surface transitions are provided; and / or, A first guide wheel (171) is provided at a position of the first frame body (11) away from the second frame body (12), a second guide wheel (172) is provided at a connection position between the first frame body (11) and the second frame body (12), a third guide wheel (173) is provided at a connection position between the second frame body (12) and the third frame body (13), and a fourth guide wheel (174) is provided at a position of the third frame body (13) away from the second frame body (12). The first guide wheel (171), the second guide wheel (172), the third guide wheel (173), and the fourth guide wheel (174) can erect the tension line (6).

10. A tensile fitness device, characterized in that, Comprising the support mechanism according to any one of claims 1-9, a moving platform (5), a tension line (6), a pulley assembly (7), and a rotational driving member (8). The moving platform (5) is arranged on a bracket (1) of the support mechanism, the rotational driving member (8) is arranged on the bracket (1), the pulley assembly (7) is arranged on the moving member (2), the tension line (6) can be partially bent to form a traction portion for a user to pull. One end of the tension line (6) on one side of the traction portion passes through the pulley assembly (7) and can be wound around the driving end of the rotational driving member (8), and the other end of the tension line (6) on the other side of the traction portion passes through the pulley assembly (7) and can be connected to the bracket (1). The pulley assembly (7) can move along the guide rail (15) with the moving member (2).

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