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 builder. The supporting mechanism comprises a support and a moving part, the support can be connected with a motion platform, a sliding groove is formed in the side wall, located on one side or two sides of the motion platform, of the support, and the sliding groove is provided with a notch; guide rails are arranged on the side walls, located on one side or two sides of the groove opening, of the sliding groove and extend in the extending direction of the sliding groove. The moving part is arranged in the sliding groove and can move along the guide rail. The position of the moving part can be easily adjusted through the sliding groove and the guide rail under the condition that the moving part is not dismantled, the moving part can be quickly switched to different training positions, tedious manual adjustment and dismantling are reduced, and the moving part can also allow the tension line to automatically adjust the angle according to the action of a user to conduct stable follow-up, so that the training efficiency is improved. The surface, facing the guide rail, of the moving part can be tightly attached to the guide rail to bear stress, so that the moving part is more attached to the surface of the guide rail to smoothly slide.

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 can be connected to the motion platform, the bracket is provided with a slide groove on the side wall on one side or both sides of the motion platform, the slide groove has a notch, the slide groove is provided with a guide rail on the side wall on one side or both sides of the notch, the guide rail is extended along the extension direction of the slide groove, and the bracket is used to set 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 slideway comprises a transverse section, a vertical section and a top section connected in sequence, and the transverse section is used for connection with the motion platform;

[0010] Wherein, the extending direction of the vertical section intersects with the extending direction of the horizontal section, the extending direction of the vertical section intersects with the extending direction of the top section, and the guide rail is disposed at one or more positions of the horizontal section, the vertical section, and the top section.

[0011] 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.

[0012] In one embodiment, the guide rail is a strip-shaped protrusion. An annular groove is provided on the circumference 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,

[0013] The guide rail is a strip-shaped groove. An annular protrusion is provided on the circumference 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.

[0014] In one embodiment, the guide rail is disposed on two side walls of the chute;

[0015] Wherein, one roller is provided, and two sides of the roller are respectively connected to the corresponding side guide rails; and / or,

[0016] A plurality of rollers are provided. A part of the plurality of rollers is connected to the guide rail on one side wall of the chute, and the other part of the rollers is connected to the guide rail on the other side wall of the chute.

[0017] In one embodiment, a plurality of locking positions are provided on the bracket and / or in the chute. The plurality of locking positions are spaced apart 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 pulling wire. The locking member is disposed 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. The pin rod is slidably connected to the connecting frame. An elastic member is provided between the pin rod and the connecting frame. The elastic member is configured to apply a force towards the locking position to the pin rod; and / or,

[0020] The connecting frame is provided with a through hole, the pin rod is inserted into the through hole, a limiting block is arranged on the side wall of the pin rod, a limiting track is arranged on a part of the 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;

[0021] When the limiting block moves into the limiting track, the pin rod remains in a separated state from the locking position;

[0022] When the limiting block moves out of the limiting track, the pin rod can move axially, approaching or departing from the locking position.

[0023] In one embodiment, the bracket is a curved rod structure, the sliding groove extends along the length direction of the curved rod structure, the curved rod structure includes a first rod segment, a second rod segment and a third rod segment which are connected in sequence, the transverse segment is arranged on the first rod segment, the vertical segment is arranged on the second rod segment, the top segment is arranged on the third rod segment, a first inflection point is formed at the joint of the first rod segment and the second rod segment, and a second inflection point is formed at the joint of the second rod segment and the third rod segment;

[0024] Wherein, a first guiding wheel is arranged at a position of the first rod segment far from the first inflection point, a second guiding wheel is arranged at a position of the first rod segment and / or the second rod segment close to the first inflection point, a third guiding wheel is arranged at a position of the second rod segment and / or the third rod segment close to the second inflection point, a fixed wheel is arranged at a position of the third rod segment far from the second inflection point, and the first guiding wheel, the second guiding wheel, the third guiding wheel and the fixed wheel can erect the tension wire.

[0025] In one embodiment, the first rod segment is rotatably connected to the second rod segment, and the first rod segment can rotate towards or away from the second rod segment; and / or, the second rod segment is rotatably connected to the third rod segment, and the third rod segment can rotate towards or away from the second rod segment;

[0026] Wherein, at the joint position of the transverse segment and the vertical segment, the end cross-sectional dimensions of the transverse segment and the end cross-sectional dimensions of the vertical segment gradually increase outwards in the extending direction, forming an outward-expanded opening structure; and / or,

[0027] At the joint position of the vertical segment and the top segment, the end cross-sectional dimensions of the vertical segment and the end cross-sectional dimensions of the top segment gradually increase outwards in the extending direction.

[0028] In a second aspect, the present invention provides a tensile fitness device, which includes a support mechanism, a movement platform, a tensile cable, a pulley assembly, and a rotational driving member in any of the above solutions. The movement platform is arranged on the support of the support mechanism, the rotational driving member is arranged on the support, the pulley assembly is arranged on the moving member, the tensile cable can be partially bent to form a traction part for a user to pull, one end of the tensile cable on one side of the traction part passes through the pulley assembly and can be wound around the driving end of the rotational driving member, and one end of the tensile cable on the other side of the traction part passes through the pulley assembly and can be fixed to the support. The pulley assembly can move along the guide rail with the moving member.

[0029] The beneficial effects of the present invention are as follows:

[0030] The present invention provides a support mechanism and a tensile fitness device. The cooperative design of the chute and the guide rail of the support mechanism enables the moving member to easily adjust its position without disassembly, 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 sliding design of the moving member along the guide rail allows the tensile cable to automatically adjust its angle according to the user's movement. When performing an arm-stretching movement training or an oblique upward pulling movement training, the tensile cable can smoothly follow, 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 the training. The moving member is arranged on the guide rail on the inner side wall of the chute, which not only ensures the smooth sliding of the tensile cable but also improves the running stability of the moving member on the slide rail. When the user pulls the moving member through the tensile cable on the movement platform, the surface of the moving member facing the guide rail can closely fit the guide rail to bear the stress, and the force on the moving member can act on the fitting surface between the moving member and the guide rail, enabling the moving member to more closely fit the surface of the guide rail for smooth sliding and making the movement smoother and more stable. Description of the Drawings

[0031] Figure 1 Schematic diagram of the installation position of the support mechanism on the tensile fitness device in an embodiment of the present invention;

[0032] Figure 2 Schematic diagram of the structure of the support mechanism in an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the structure of the support mechanism when a single roller is provided in an embodiment of the present invention;

[0034] Figure 4 Schematic diagram of the structure of the support mechanism when multiple rollers are provided in an embodiment of the present invention;

[0035] Figure 5 Schematic diagram of the position of the locking member in an embodiment of the present invention;

[0036] Figure 6 Schematic diagram of the position of the limit track in the embodiment of the present invention;

[0037] Figure 7 Schematic diagram of the pulling line being pulled out from the moving part in the embodiment of the present invention.

[0038] In the figure:

[0039] 1. Bracket;

[0040] 11. Slide groove; 111. Horizontal section; 112. Vertical section; 113. Top section;

[0041] 12. Guide rail;

[0042] 13. First rod section; 14. Second rod section; 15. Third rod section;

[0043] 16. Locking position; 171. First guide wheel; 172. Second guide wheel; 173. Third guide wheel; 174. Fixed wheel;

[0044] 2. Moving part; 21. Roller; 211. Annular groove; 22. Rotating shaft;

[0045] 3. Connecting frame; 31. Through hole; 32. Limit track;

[0046] 4. Locking part; 41. Limit block;

[0047] 5. Moving platform; 6. Pulling line; 61. Traction part; 62. Movable pulley; 63. Pulling rod; 7. Pulley assembly; 8. Rotating driving part. Detailed implementation manners

[0048] The present invention will be further described in detail below with reference to the 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 sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0049] 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.

[0050] In the present invention, unless otherwise clearly specified and defined, the first feature being “on” or “under” the second feature may include the direct contact between the first and second features, or may include the contact between the first and second features through additional features therebetween without direct contact. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being “under”, “beneath” and “underneath” the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0051] In the description of this embodiment, the orientation or positional relationships such as “up”, “down”, “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 operated 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.

[0052] As Figures 1 to 3 shown, 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 can be connected to a moving platform 5. The bracket 1 is provided with a chute 11 on the side wall on one side or both sides of the moving platform 5. The chute 11 has a notch. The bracket 1 is provided with a guide rail 12 on the side wall on one side or both sides of the notch. The guide rail 12 extends along the extending direction of the chute 11. The bracket 1 is used for installing a tension wire 6, and the tension wire 6 can extend along the extending direction of the chute 11. The moving member 2 is partially arranged in the chute 11, and the moving member 2 can move along the guide rail 12. The moving member 2 can be penetrated by the tension wire 6, and the tension wire 6 can be pulled out by a user at the moving member 2.

[0053] 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 within the chute 11. The matching design of the chute 11 and the guide rail 12 enables the moving member 2 to easily adjust its position without disassembly, so as to quickly switch to different training positions, reducing cumbersome manual adjustment and disassembly / assembly, greatly simplifying the operation process and improving the fitness efficiency. The sliding design of the moving member 2 along the guide rail 12 allows the tension wire 6 to automatically adjust its angle according to the user's movements. When performing an arm-stretching movement training or an oblique upward pulling movement training, the tension wire 6 can smoothly follow, 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 effectiveness of the training. The moving member 2 is arranged on the guide rail 12 on the inner side wall of the chute 11, which not only ensures the smooth sliding of the tension wire 6, but also improves the running stability of the moving member 2 on the slide rail. When the user pulls the moving member 2 through the tension wire 6 on the exercise platform 5, the surface of the moving member 2 facing the guide rail 12 can closely fit with the guide rail 12 to bear the stress. The force on the moving member 2 can act on the fitting surface between the moving member 2 and the guide rail 12, enabling the moving member 2 to more closely fit the surface of the guide rail 12 for smooth sliding, and making the movement smoother and more stable, solving the technical problems of inconvenient adjustment of the force output point and limited fixed positions in the related art of tension fitness devices.

[0054] Optionally, the moving manner of the moving member 2 along the guide rail 12 can be but is not limited to sliding or rolling. For example, the moving member 2 can slide along the guide rail 12, and the cross-section of the matching position between the guide rail 12 and the moving member 2 can be but is not limited to a T shape or a dovetail shape, reducing the separation of the moving member 2 from the guide rail 12 and improving the running stability. Or, the moving member 2 can roll along the guide rail 12. For example, the moving member 2 can be a roller 21 or a spherical structure, which can reduce the friction between the moving member 2 and the guide rail 12, reduce wear, and improve the movement accuracy. An installation opening can be arranged at the end position of the chute 11, and 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 11 or removed from the chute 11.

[0055] As Figures 1 to 3 shown, in some embodiments, the chute 11 includes a transverse section 111, a vertical section 112, and a top section 113 that are connected in sequence. The transverse section 111 is used for connecting the exercise platform 5. The extending direction of the vertical section 112 intersects with the extending direction of the transverse section 111, and the extending direction of the vertical section 112 intersects with the extending direction of the top section 113. The guide rail 12 is arranged at one or more positions of the transverse section 111, the vertical section 112, and the top section 113.

[0056] With such a setting, the horizontal section 111, vertical section 112, and top section 113 in the chute 11 design can respectively correspond to the bottom horizontal training stroke, vertical training stroke, and top high-pulley training stroke. This multi-section chute 11 structure enables users to quickly switch to different training positions and modes without replacing equipment or accessories, greatly enriching the training functions of the fitness equipment and meeting the exercise needs of users for different angles and intensities of the whole muscle group. The intersection design of the vertical section 112 with the horizontal section 111 and the top section 113 achieves seamless connection and smooth transition between different training modes. After completing a training stroke, users can easily slide the moving member 2 from one section to another, reducing the complex adjustment or disassembly process and improving the continuity and efficiency of training.

[0057] The guide rail 12 is provided at one or more positions of the horizontal section 111, vertical section 112, and top section 113, which can accurately guide the moving member 2 in different training modes, reduce the shaking and instability during the movement process, and improve the safety and comfort of training. At the same time, the presence of the guide rail 12 also helps to extend the service life of the moving member 2 and reduce the wear caused by sliding friction. The multi-section chute 11 structure not only provides rich training modes but also optimizes the space layout of the equipment, enabling the fitness equipment to provide multiple training functions while occupying a relatively small area, making it suitable for use in environments with limited space such as homes. In particular, the design of the top section 113 allows the setting of high-pulley training points, avoiding an additional increase in the height of the equipment and improving the flexibility of space utilization. By forming an intersection structure between different sections of the chute 11, the overall structural strength and stability of the bracket 1 are enhanced. During the training process, especially when performing training movements with greater strength, it can effectively reduce the relative displacement of the bracket 1 relative to the movement platform 5, ensuring the stability and durability of the support mechanism. The multi-section design of the chute 11 and the flexible setting of the guide rail 12 enable the fitness equipment to better adapt to the training needs and preferences of different users. Whether performing basic strength training or complex multi-angle pulling training, it can provide personalized training paths and enhance the fitness effect.

[0058] Optionally, in order to improve the durability of the chute 11 and reduce wear, the bracket 1 can be made of high-strength alloy materials. Especially at the turning points of the chute 11, such as the intersections of the horizontal section 111 and the vertical section 112, and the vertical section 112 and the top section 113, additional reinforcement ribs or reinforcement plates and other reinforcement designs can be added at the corresponding positions of the bracket 1 to ensure the structural stability during long-term use. In different sections of the chute 11, the guide rail 12 can adopt different materials or designs. For example, higher-strength alloy and other more wear-resistant guide rail 12 materials can be used in the vertical section 112 and the top section 113 to meet the requirements of high-frequency vertical movement.

[0059] Optionally, sensors such as position sensors or force sensors can be integrated into the guide rail 12 to achieve real-time monitoring and feedback of the position of the movable member 2. It can be combined with the control system of the fitness equipment to automatically monitor the resistance, or provide real-time training guidance and data analysis through a display screen.

[0060] Optionally, the height of the guide rail 12 relative to the side wall of the slide chute 11 can be designed to be adjustable. For example, the guide rail 12 and the side wall of the slide chute 11 can be detachably connected by bolts or snaps to facilitate replacement of guide rails 12 of different heights. Alternatively, telescopic parts such as elastic pads, springs, cylinders or electric push rods can be provided between the guide rail 12 and the side wall of the slide chute 11. The telescopic parts can support the guide rail 12 from the surface of the side wall of the slide chute 11 to different heights, allowing the user to adjust the tightness of the guide rail 12 according to their training needs, thereby optimizing the stability and smoothness of the moving part 2 during the sliding process.

[0061] Optionally, the moving member 2 may be designed to have replaceable connection positions, allowing the user to connect different types of training handles or accessories to accommodate different training movements, such as grips, pull ropes or foot pedals.

[0062] like Figures 1 to 3 As shown, in some embodiments, the mobile member 2 includes a roller 21 and a rotating shaft 22, the roller 21 is connected to the guide rail 12 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 the friction force of the mobile member 2 when moving in the chute 11 is greatly reduced by the rolling connection between the roller 21 and the guide rail 12, compared with the sliding connection mode, 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 12, so that the external follower can be connected to the mobile member 2 in a free rotation. When performing oblique or arm-stretching action training, the follower can automatically adjust the angle according to the hand or foot action 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 realism and effect of the training.

[0063] The rolling connection between the roller 21 and the guide rail 12, 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 12 effectively prolongs the service life of the two and the entire support mechanism, and reduces the maintenance cost in long-term use. The rolling movement of the roller 21 on the guide rail 12 reduces the direct contact between the tension line 6 and the guide rail 12 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.

[0064] When switching from one training mode to another, for example, from horizontal training to lat pulldown, the moving member 2 can smoothly transition along the guide rail 12. The combination of the roller 21 and the rotating shaft 22 enables smooth movement between different training segments, reducing the adjustment time during the switching process and enhancing the coherence and efficiency of training.

[0065] Since the roller 21 slides more smoothly on the guide rail 12 and the rotating shaft 22 allows the external follower to freely adjust its position, this design significantly improves the user's interaction experience, making the operation of the device more intuitive and easy. Even during high-intensity training, users can maintain good control and a sense of balance.

[0066] Optionally, the roller 21 can be made of a material with high wear resistance and low friction coefficient, such as polyurethane or high-performance plastics, to reduce wear between the roller 21 and the guide rail 12 and increase 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.

[0067] 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 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 12 to reduce vibration and noise during movement and improve the comfort during training. A safety guard can be added at the connection between the roller 21 and the rotating shaft 22 or at the opening of the chute 11 to prevent the entanglement of clothes or hair during training and ensure the safety of the user.

[0068] As Figures 1 to 3 shown, in some embodiments, the guide rail 12 is a bar-shaped protrusion, and an annular groove 211 is provided on the circumference of the roller 21. The roller 21 can be connected to the bar-shaped protrusion through the annular groove 211, and the roller 21 can roll along the bar-shaped protrusion; and / or, the guide rail 12 is a bar-shaped groove, and an annular protrusion is provided on the circumference of the roller 21. The roller 21 can be connected to the bar-shaped groove through the annular protrusion, and the roller 21 can roll along the bar-shaped groove.

[0069] Optionally, the guide rail 12 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 annular groove 211 of the roller 21 can allow the strip-shaped protrusion to be snapped in, 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 11, further guide and limit the roller 21, effectively prevent the risk of the roller 21 derailing 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 part 2 in the chute 11 smoother, and improve the comfort and efficiency of training.

[0070] Through the connection between the annular groove 211 of the roller 21 and the strip-shaped protrusion, its movement 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 113, thereby enhancing the flexibility of the follow-up training and ensuring that the tension line 6 can maintain a stable and smooth output under different training modes.

[0071] Optionally, the guide rail 12 is a strip-shaped groove, and an annular protrusion is provided in the circumferential direction of the roller 21. The matching design of the annular protrusion and the strip-shaped groove can provide precise guidance for the roller 21. Even when moving quickly or the movement direction changes, the roller 21 can move stably along the predetermined path, reduce the performance degradation caused by deviation, enable the moving part 2 to quickly switch and accurately position between different training modes, and further improve the adaptability and versatility of the fitness equipment, providing a more rich and comprehensive training experience for users.

[0072] Among them, the edge design of the annular protrusion can be a smooth arc surface. When the roller 21 comes into contact with the guide rail 12, 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 12, 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 of users. It can enable the fitness equipment to smoothly transition between multiple training modes, improve the convenience and flexibility of training, meet the seamless switching of different training needs, and thus provide a more efficient and safe fitness experience for users.

[0073] Optionally, the cross-section of the roller 21 in the direction perpendicular to the guide rail 12 can be designed as a polygon or an ellipse to adapt to the special shape of the guide rail 12, enhance the guiding performance, reduce lateral shaking, and improve the accuracy and comfort of movement.

[0074] Such as Figures 1 to 4As shown, in some embodiments, the guide rails 12 are provided on the two side walls of the sliding groove 11. Among them, there is one roller 21, and both sides of the roller 21 are respectively connected to the corresponding side guide rails 12; and / or, there are multiple rollers 21, and a part of the multiple rollers 21 are connected to the guide rails 12 on one side wall of the sliding groove 11, and the other part of the rollers 21 are connected to the guide rails 12 on the other side wall of the sliding groove 11. In this embodiment, by providing the guide rails 12 on the two side walls of the sliding groove 11 and ensuring the connection between the rollers 21 and the guide rails 12, 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, and the safety and effect of the training can be improved.

[0075] Optionally, referring to Figure 3 , when there is one roller 21 and the roller 21 is connected to the guide rails 12 on both sides, the load distribution is more uniform, thereby improving the load-bearing capacity of the moving member 2, enabling the roller 21 to maintain a straight-line movement during rolling, reducing axial shaking, and improving stability and reliability.

[0076] Optionally, referring to Figure 4 , when there are multiple rollers 21, the connection design of the multiple rollers 21 and the guide rails 12 enables the multiple rollers 21 to roll along the corresponding side guide rails 12 respectively. When the user pulls the moving member 2 on the exercise platform 5, some of the multiple rollers 21 are in close contact with one side guide rail 12 and bear the main moving stress, and the other part of the rollers 21 roll along the guide rail 12 on the other side, which can play a guiding role, reduce the force on a single roller 21, reduce the circumferential wear of a single roller 21, improve the movement accuracy, and can more precisely control the movement trajectory of the moving member 2. The multiple rollers 21 can also be arranged one by one in a staggered up-and-down manner, which can make the movement of the moving member 2 more stable and reduce swing. For example, there can be three rollers 21, two rollers 21 are in rolling connection with the guide rail 12 close to the exercise platform 5, and the other roller 21 is in rolling connection with the guide rail 12 far from the exercise platform 5, and the rolling connection points of the three can be distributed in a triangular shape, which can disperse the stress. Compared with the case of one or two rollers 21, setting three or more rollers 21 can make the movement of the moving member 2 more stable and reduce swing.

[0077] Optionally, wear-resistant layers can be provided on the surfaces of both the roller 21 and the guide rail 12. The wear-resistant layer can be, but is not limited to, a carbon fiber layer or a Teflon coating, further reducing wear and extending the service life.

[0078] Optionally, a linkage structure such as a connecting rod can be provided between the multiple rollers 21 connected to the same side guide rail 12, enabling the multiple rollers 21 to roll synchronously, reducing the shaking during the movement, and improving the movement stability of the moving member 2.

[0079] 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 12 and the roller 21 connected to the other side guide rail 12, which can not only make the roller 21 fit more closely with the corresponding side guide rail 12 and reduce separation, but also absorb the impact during movement and reduce noise.

[0080] Optionally, the roller 21 and the guide rail 12 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 12, 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 12 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.

[0081] like Figures 1 to 4 As shown, in some embodiments, one or more rollers 21 are provided on the same rotating shaft 22, and one or more guide rails 12 are provided on the same side wall of the chute 11. Wherein, when there are multiple rollers 21 on the same rotating shaft 22 and guide rails 12 on the same side wall of the chute 11, the rollers 21 and the guide rails 12 are provided in a one-to-one correspondence, and the multiple rollers 21 are connected to the corresponding guide rails 12. 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 load-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 12.

[0082] In this way, when one or more rollers 21 are arranged on the same rotating shaft 22, the same number of guide rails 12 should also be arranged on the same side wall of the slide groove 11 to achieve a one-to-one correspondence between the rollers 21 and the guide rails 12. This can significantly improve the stability of the movement of the moving part 2 in the slide groove 11, 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 improve the safety and comfort of training.

[0083] 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 portion of the rollers 21 and annular protrusions may be provided on another portion of the rollers 21. This diverse configuration can adapt to different types of guide rail 12 designs, ensuring that the rollers 21 roll stably on the guide rail 12, while providing greater freedom and customization possibilities for the design.

[0084] The connection between the roller 21 and the guide rail 12 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 12, 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.

[0085] like Figures 1 to 3 As shown, in some embodiments, the bracket 1 is a curved rod structure, and the slide groove 11 is extended along the length direction of the curved rod structure. The curved rod structure includes a first rod segment 13, a second rod segment 14 and a third rod segment 15 connected in sequence, a transverse segment 111 is arranged on the first rod segment 13, and can form a bottom horizontal training stroke, a vertical segment 112 is arranged on the second rod segment 14, and a top segment 113 is arranged on the third rod segment 15, and can form a middle vertical training stroke, and the first rod segment 13 and the second rod segment 14 have a first inflection point at the junction, and the second rod segment 14 and the third rod segment 15 have a second inflection point at the junction.

[0086] The bent bar structure can better adapt to the multi-stage training needs of fitness equipment, namely the horizontal training stroke at the bottom, the high-position pull-down training point at the top, and the vertical training stroke in the middle. The design of the bent bar structure realizes the seamless conversion of the guide rail 12 and the movable member 2 under different training modes, reduces the manual adjustment of the position by the user, and improves the continuity of the training. The chute 11 is extended along the length direction of the bent bar structure, and the pulley block mechanism can slide freely on the full length of the bracket 1 without being restricted by space. The user can easily switch from the bottom horizontal training stroke to the top high-position pull-down training point, reducing the disassembly or reinstallation of equipment components, and greatly simplifying the switching process of the training mode. The first inflection point and the second inflection point can realize a smooth transition from the first rod segment 13, the second rod segment 14 to the third rod segment 15, and smoothly transition to different training segments, which can reduce the jamming or shaking of the movable member 2 in the chute 11, and improve the smoothness and stability of the movement of the movable member 2.

[0087] Among them, a first guide wheel 171 is arranged at a position of the first rod segment 13 away from the first inflection point, a second guide wheel 172 is arranged at a position of the first rod segment 13 and / or the second rod segment 14 close to the first inflection point, a third guide wheel 173 is arranged at a position of the second rod segment 14 and / or the third rod segment 15 close to the second inflection point, and a fixed wheel 174 is arranged at a position of the third rod segment away from the second inflection point. The first guide wheel 171, the second guide wheel 172, the third guide wheel 173 and the fixed wheel 174 can set up the tension line 6.

[0088] Specifically, the tension line 6 has a first end and a second end which are oppositely arranged. The first end of the tension line 6 is wound around the driving end of the rotation driving member 8 and can be retracted and released by the rotation driving member 8 to provide resistance. The rotation driving member 8 can be arranged near the first inflection point position or near the first guide wheel 171 and can be set according to the usage requirements. The second end of the tension line 6 can be sequentially wound around the first guide wheel 171, the second guide wheel 172, the third guide wheel 173 and then fixed to the fixed wheel 174. The first guide wheel 171, the second guide wheel 172, the third guide wheel 173 and the fixed wheel 174 are located outside the sliding groove 11 and can avoid the moving member 2. The moving member 2 slides along the guide rail 12 in the sliding groove 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 fixed wheel 174 according to the needs.

[0089] Optionally, at the joint position between the first rod section 13 and the second rod section 14 and at the joint position between the second rod section 14 and the third rod section 15, a reinforcing rib or a support frame can be provided to reduce deformation and wear during high-intensity training.

[0090] Optionally, an arc-shaped extension plate can be provided on one side of the end of the first rod section 13. The first rod section 13 can be rotatably connected to the side of the second rod section 14 through the arc-shaped extension plate. When the first rod section 13 and the second rod section 14 are unfolded, the arc-shaped extension plate and the second rod section 14 are stacked. The sliding grooves 11 of the first rod section 13 and the second rod section 14 are continuously joined. When the first rod section 13 rotates relative to the second rod section 14, the arc-shaped extension plate can separate the first rod section 13 from the second rod section 14 so as to facilitate the first rod section 13 to be close to and fit the second rod section 14.

[0091] As Figures 1 to 3 shown, in some embodiments, the first rod section 13 is rotatably connected to the second rod section 14, and the first rod section 13 can rotate towards or away from the second rod section 14; and / or, the second rod section 14 is rotatably connected to the third rod section 15, and the third rod section 15 can rotate towards or away from the second rod section 14. The first rod section 13 and the second rod section 14 and the second rod section 14 and the third rod section 15 can be designed with rotational connections separately or jointly, which provides great flexibility and versatility for the fitness equipment, facilitates the first rod section 13 and the third rod section 15 to rotate close to the second rod section 14 for folding and storage, and can also adjust the angles and positions of each rod section according to the exercise needs.

[0092] Wherein, at the joint position of the horizontal segment 111 and the vertical segment 112, the end cross-sectional dimensions of the horizontal segment 111 and the end cross-sectional dimensions of the vertical segment 112 gradually increase outward in the extending direction, forming an outward-expanded mouth structure; and / or, at the joint position of the vertical segment 112 and the top segment 113, the end cross-sectional dimensions of the vertical segment 112 and the end cross-sectional dimensions of the top segment 113 gradually increase outward in the extending direction. The outward-expanded mouth structure can serve as a guiding edge when the moving member 2 moves, ensuring a smooth transition when the moving member 2 switches between training segments and avoiding jamming or derailment during the movement process.

[0093] Optionally, the adjacent two of the first rod segment 13, the second rod segment 14, and the third rod segment 15 can also be detachably connected such as by snap connection or bolt connection, and can form an independent replacement module for combination according to user requirements.

[0094] Optionally, the connection between the first rod segment 13 and the exercise platform 5 can be designed to be adjustable. For example, the first rod segment 13 where the horizontal segment 111 is located and the exercise platform 5 can be rotatably connected, and a driving member such as a cylinder or a hydraulic cylinder can be provided to drive the exercise platform 5 to rotate relative to the first rod segment 13 for angle adjustment, allowing the user to adjust the connection position according to their own height or training needs to achieve the best training posture. A buffer material such as an elastic pad or a spring or a shock-absorbing design is added at the connection between the first rod segment 13 and the exercise platform 5 to ensure the firm connection between the exercise platform 5 and the bracket 1 under high-intensity training and reduce vibration and noise during the movement process.

[0095] As Figures 1 to 6 shown, in some embodiments, a plurality of locking positions 16 are provided on the bracket 1 and / or in the chute 11, and the plurality of locking positions 16 are arranged at intervals along the extending direction of the chute 11. 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 provided on the connecting frame 3. The locking member 4 can selectively connect and lock or separate and unlock with the locking position 16.

[0096] In this embodiment, a plurality of locking positions 16 are provided on the bracket 1 or in the chute 11, which can realize the precise fixation of the moving member 2 at different positions. These locking positions 16 are distributed at intervals along the extending direction of the chute 11, enabling the user to fix the pulley group mechanism at a suitable training point according to training needs. Whether it is low-position, middle-position or high-position pull-down training, it can be quickly adjusted and locked, improving the convenience and efficiency of training. The moving member 2 can not only move freely in the chute 11 for follow-up training, but also be locked by the locking member 4 and the locking position 16 for fixed-point training, enhancing the diversity of training.

[0097] 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 approaching locking position 16 by simply pushing or pulling. The operation is simple, and it can also instantaneously fix the moving member 2 at different training positions, improving the accuracy and safety of training.

[0098] As Figures 1 to 6 shown, in some embodiments, the locking member 4 is a pin rod, the pin rod is slidably connected to the connecting frame 3, and an elastic member is provided between the pin rod and the connecting frame 3. The elastic member is configured to be able 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, stably fixing the moving member 2, avoiding accidental movement or detachment, and enabling the user to perform fixed-point movement.

[0099] As Figures 1 to 6 shown, in some embodiments, a through hole 31 is provided on the connecting frame 3, the pin rod is inserted into 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 is 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 moving away from the locking position 16.

[0100] 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 perform axial movement, so as to be separated from the locking position 16, realizing the unlocking function. The user can make the limiting block 41 move out of the limiting track 32 through simple operations such as rotating the pin rod, so that the pin rod can freely move in the axial direction, approaching or moving away from the locking position 16, realizing locking or unlocking. It enables the user to quickly operate when switching training positions, improves the switching efficiency of training modes, and at the same time avoids excessive movement during unlocking operations through mechanical limiting, improving the accuracy and safety of operations.

[0101] As Figures 1 to 7As 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, so as to pull out the tensile wire 6. The rotation driving member 8 can take in and release the tensile wire 6. When the user makes different movements, the tensile wire 6 can apply force to the moving member 2, driving the moving member 2 to move along with the movement along the sliding groove 11. The end of the tensile wire 6 on one side of the traction part 61 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 61 passes through the pulley assembly 7 and can be fixed to the bracket 1. The pulley assembly 7 can move along the guide rail 12 along with the moving member 2. Two support mechanisms can be arranged, 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 12 in the sliding groove 11 on the movement platform 5. When the user pulls the tensile wire 6 through the traction part 61, the moving member 2 will be stressed and move along the guide rail 12 in the sliding groove 11 to move along with the movement to adapt to the user's force application angle for corresponding tensile training.

[0102] Among them, the pulley assembly 7 can include two pulleys. The traction part 61 of the tensile wire 6 can pass through between the two pulleys to form a loop with an opening to form the traction part 61 for the user to pull. The end of the tensile wire 6 on one side of the traction part 61 passes through one pulley 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 61 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. When the moving member 2 moves to any position of the sliding groove 11, the corresponding position of the tensile wire 6 can extend to form a corresponding traction part 61. Through the combination of the support mechanism and the pulley assembly 7, the tensile fitness device provides a variety of training mode selections. 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. The tensile wire 6 can be wound around the reel, and the motor drives the reel to rotate to take in and release the tensile wire 6.

[0103] The bracket 1 is provided with sliding grooves 11 on the side walls on one side or both sides of the moving platform 5, thereby allowing the moving member 2 to freely move along the guide rail 12 within the sliding grooves 11, 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 arranging the guide rail 12 within the sliding groove 11, the stability of the moving member 2 and the smoothness of sliding are ensured, further enhancing the user experience.

[0104] Due to including the above 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.

[0105] In summary, in combination with the above structure, the usage process of the tension fitness device is described as follows:

[0106] The horizontal section 111, vertical section 112, and top section 113 on the bracket 1 can form three training strokes, and the moving member 2 can freely switch within the three training strokes. Taking the bottom horizontal training stroke formed by the horizontal section 111 as an example, the first end of the tension line 6 is wound around the rotational driving member 8, and the second end can be successively wound around the first guide pulley 171, the moving member 2, the second guide pulley 172, the third guide pulley 173 and then fixed to the fixed pulley 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 rotational driving member 8 can take in and release 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 sliding groove 11. Through control members such as a touch screen, the output resistance of the rotational driving member 8 can be displayed or adjusted, thereby adjusting the training tension. The moving member 2 can be position-fixed on the sliding groove 11 through the locking member 4 being locked to 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, 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 through the locking member 4 and the locking position 16 for corresponding fixed-point or follow-up training.

[0107] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than 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, Comprising: A bracket (1), the bracket (1) being capable of connecting to a moving platform (5), the bracket (1) being provided with a chute (11) on the side wall on one side or both sides of the moving platform (5), the chute (11) having a notch, and a guide rail (12) being provided on the side wall on one side or both sides of the notch of the chute (11), the guide rail (12) extending along the extending direction of the chute (11), and the bracket (1) being used for erecting a tension wire (6); A moving member (2), a part of the moving member (2) being arranged in the chute (11), and the moving member (2) being capable of moving along the guide rail (12), the moving member (2) being capable of allowing the tension wire (6) to pass through, and the tension wire (6) being capable of being pulled out by a user at the moving member (2).

2. The support mechanism according to claim 1, characterized in that The chute (11) includes a transverse section (111), a vertical section (112) and a top section (113) that are connected in sequence, and the transverse section (111) is used for connecting to the moving platform (5); Wherein, the extending direction of the vertical section (112) intersects with the extending direction of the transverse section (111), the extending direction of the vertical section (112) intersects with the extending direction of the top section (113), and the guide rail (12) is arranged at one or more positions of the transverse section (111), the vertical section (112) and the top section (113).

3. The support mechanism according to claim 1 or 2, characterized in that The moving member (2) includes a roller (21) and a rotating shaft (22), the roller (21) being in rolling connection with the guide rail (12), one end of the rotating shaft (22) being rotatably connected to the roller (21), and the other end passing through the notch.

4. The support mechanism according to claim 3, characterized in that, The guide rail (12) is a strip-shaped protrusion, an annular groove (211) is provided on 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 (12) is a strip-shaped groove, an annular protrusion is provided on the circumference of the roller (21), and 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.

5. The support mechanism according to claim 3, characterized in that, The guide rail (12) is arranged on the two side walls of the chute (11); Wherein, one roller (21) is provided, and both sides of the roller (21) are respectively connected to the corresponding side guide rail (12); and / or, A plurality of rollers (21) are provided, and a part of the plurality of rollers (21) are connected to the guide rail (12) on one side wall of the chute (11), and the other part of the plurality of rollers (21) are connected to the guide rail (12) on the other side wall of the chute (11).

6. The support mechanism according to claim 3, characterized in that A plurality of locking positions (16) are provided on the bracket (1) and / or in the chute (11), and the plurality of locking positions (16) are arranged at intervals along the extending direction of the chute (11); 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) is configured to allow the pulling wire (6) to pass through. The locking member (4) is disposed 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, wherein The locking member (4) is a pin rod, and the pin rod is slidably connected to the connecting frame (3). An elastic member is disposed between the pin rod and the connecting frame (3), and the elastic member is configured 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 inserted into the through hole (31), a limiting block (41) is provided on the side wall of the pin rod, a limiting track (32) is provided on a partial 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 remains in a separated state from the locking position (16); When the limiting block (41) moves out of the limiting track (32), the pin rod can axially move, approaching or departing from the locking position (16).

8. The support mechanism according to claim 2, wherein The bracket (1) is a curved rod structure, the chute (11) extends along the length direction of the curved rod structure. The curved rod structure includes a first rod segment (13), a second rod segment (14), and a third rod segment (15) connected in sequence. The transverse segment (111) is provided on the first rod segment (13), the vertical segment (112) is provided on the second rod segment (14), the top segment (113) is provided on the third rod segment (15), a first inflection point is formed at the joint of the first rod segment (13) and the second rod segment (14), and a second inflection point is formed at the joint of the second rod segment (14) and the third rod segment (15); Wherein, a first guide wheel (171) is provided at a position of the first rod segment (13) away from the first inflection point, a second guide wheel (172) is provided at a position of the first rod segment (13) and / or the second rod segment (14) close to the first inflection point, a third guide wheel (173) is provided at a position of the second rod segment (14) and / or the third rod segment (15) close to the second inflection point, a fixed wheel (174) is provided at a position of the third rod segment (15) away from the second inflection point, and the first guide wheel (171), the second guide wheel (172), the third guide wheel (173), and the fixed wheel (174) can support and route the pulling wire (6).

9. The support mechanism according to claim 8, characterized in that, The first rod segment (13) is rotatably connected to the second rod segment (14), and the first rod segment (13) can rotate towards or away from the second rod segment (14); and / or, the second rod segment (14) is rotatably connected to the third rod segment (15), and the third rod segment (15) can rotate towards or away from the second rod segment (14); Wherein, at the joint position of the transverse segment (111) and the vertical segment (112), the end cross-sectional dimensions of the transverse segment (111) and the end cross-sectional dimensions of the vertical segment (112) gradually increase outward in the extending direction, forming an outward-expanded mouth structure; and / or, At the joint position of the vertical segment (112) and the top segment (113), the end cross-sectional dimensions of the vertical segment (112) and the end cross-sectional dimensions of the top segment (113) gradually increase outward in the extending direction.

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 wire (6), a pulley assembly (7) and a rotational driving member (8), the moving platform (5) is arranged on the 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 wire (6) can be partially bent to form a traction portion (61) for a user to pull, one end of the tension wire (6) on one side of the traction portion (61) passes through the pulley assembly (7) and can be wound around the driving end of the rotational driving member (8), the other end of the tension wire (6) on the other side of the traction portion (61) passes through the pulley assembly (7) and can be fixed to the bracket (1), and the pulley assembly (7) can move along the guide rail (12) with the moving member (2).

Images