Resistance structure of fitness equipment, tension training device and fitness bench

Abstract

The present invention belongs to the technical field of fitness training equipment, specifically a resistance structure of fitness equipment, a tension training device and a fitness bench, including a main frame, a gas spring assembly and a slider assembly, the main frame is provided with a first fixed seat, a second fixed seat and a third fixed seat at intervals along the first direction, the slider assembly is slidably arranged between the second fixed seat and the third fixed seat under the pulling of a pull rope; the gas spring assembly includes at least three gas springs, two of which are respectively fixed at both ends on the first fixed seat and the slider assembly; one end of the remaining gas spring is fixed on the first fixed seat, and the other end is movably connected to the slider assembly, and a limiter for limiting the movement of the gas spring is arranged on the slider assembly. The present invention provides a plurality of adjustable gas springs so that the resistance structure has a plurality of resistance gears, thereby achieving the effect of controlling the compression of different gas springs and outputting different resistance values, and the output resistance value is not only stable but also adjustable, and is suitable for a variety of people.

Description

Technical Field

[0001] The invention belongs to the technical field of fitness training equipment, and in particular relates to a resistance structure of fitness equipment, a tension training device and a fitness bench. Background Art

[0002] With the development of society, people's demand for fitness is growing, and fitness equipment is also constantly developing and innovating. In order to meet the needs of office workers to train at home, fitness benches came into being. Fitness benches are home training equipment. Their functions are no longer limited to meeting users' basic fitness needs, but are moving towards a more humane, multifunctional, comfortable to use and reasonable storage direction.

[0003] One of the functions of a fitness bench is upper limb strength training, which uses a pulling training device. The device can be stored in the fitness bench when not in use, and unfolded and exposed to the outside for users to perform strength training when in use. One of the core structures used for strength training is its resistance system. Integrating the resistance system in the fitness bench limits the volume and weight of the product itself, which in turn affects the internal structure and requires it to be simplified and miniaturized. However, this is contrary to the strength-type products achieved by the bird arm. Therefore, in addition to having a basic resistance source, the resistance system must be light and compact enough and should not take up too much structural space. In addition, in order to adapt to different training needs, the resistance output by the resistance source should be adjustable. Summary of the invention

[0004] In order to solve the problems in the above-mentioned background technology, the present invention provides a resistance structure of fitness equipment, a tension training device and a fitness bench.

[0005] The first object of the present invention is to provide a resistance structure of a fitness equipment, comprising a main frame, a gas spring assembly and a slider assembly, wherein:

[0006] A first fixed seat, a second fixed seat and a third fixed seat are arranged on the main frame at intervals along the first direction, a fixed pulley block is arranged on the first fixed seat and the second fixed seat, and a movable pulley block is arranged on the slider assembly; two ends of the pull rope respectively pass around the movable pulley block and the fixed pulley block and extend outward from the first fixed seat; the slider assembly is slidably arranged between the second fixed seat and the third fixed seat under the pulling of the pull rope;

[0007] The gas spring assembly includes at least three gas springs, two of which are respectively fixed at both ends to the first fixed seat and the slider assembly; one end of the remaining gas spring is fixed to the first fixed seat, and the other end is movably connected to the slider assembly, and a limit piece is provided on the slider assembly for limiting the movement of the gas spring.

[0008] Furthermore, the slider assembly includes a sliding frame, the sliding frame is provided with a guide hole, and one end of the movably arranged gas spring is inserted into the guide hole;

[0009] When the limiter does not restrict the gas spring, the slider assembly slides to make the gas spring and the guide hole move axially relative to each other; when the limiter restricts the gas spring, the sliding assembly and the gas spring are relatively fixed.

[0010] Furthermore, a limiting hole which is perpendicular to and connected with the guide hole is provided on the sliding frame; when the pull rope is not pulled, the limiting member is inserted into the limiting hole so that the limiting member abuts against the end of the gas spring.

[0011] Furthermore, a movable pulley block is respectively provided on both sides of the sliding frame, the movable pulley block includes at least one movable pulley and a mounting bracket for mounting the movable pulley, and the mounting bracket is arranged on the sliding frame through a pre-tightening module;

[0012] The preload module includes a mounting column, a spring and a limit stop ring. One end of the mounting column passes through the sliding frame and is fixedly connected to the mounting bracket. The limit stop ring is fixed to the other end of the mounting column. The spring is sleeved on the mounting column, one end of which abuts against the sliding frame and the other end abuts against the limit stop ring.

[0013] Furthermore, four gas springs are arranged in parallel, wherein two gas springs located on the outside are fixed on the slider assembly, and two gas springs located on the inside are movably arranged on the slider assembly;

[0014] The resistance values ​​of the four gas springs are different, and the four gas springs enable the resistance structure to have four resistance gears.

[0015] Furthermore, a slide bar is fixed between the second fixing seat and the third fixing seat, and the slider assembly is slidably arranged on the slide bar.

[0016] Furthermore, a gas spring pressure plate is detachably connected to the second fixing seat, and the gas spring is limited in the vertical direction between the second fixing seat and the gas spring pressure plate.

[0017] Furthermore, a movable pulley block is provided on each side of the slider assembly, and two fixed pulley blocks corresponding to the movable pulley blocks are provided on the first fixed seat and the second fixed seat;

[0018] The movable pulley group includes two coaxially arranged movable pulleys, the fixed pulley group on the second fixed seat includes a first fixed pulley and a second fixed pulley corresponding to the two movable pulleys respectively, and the axis of the first fixed pulley is arranged perpendicular to the axis of the second fixed pulley; the fixed pulley group on the second fixed seat also includes a first changing wheel; the fixed pulley group on the first fixed seat includes a second changing wheel.

[0019] The second object of the present invention is to provide a tension training device, comprising the resistance structure of any one of the fitness equipments mentioned above, and also comprising a flying bird arm structure, wherein the flying bird arm structure comprises a third direction-changing wheel, a fourth direction-changing wheel and a flying bird arm, wherein the pull rope extends from the resistance structure, passes through the third direction-changing wheel and the fourth direction-changing wheel, and then passes through the flying bird arm and then extends out;

[0020] The bird arm is connected to the fourth direction-changing wheel through an angle adjustment disk. A plurality of bayonet holes are circumferentially arranged on the outer edge of the angle adjustment disk. An angle limiting card plate is arranged on the outer side of the angle adjustment disk. The angle limiting card plate can be clamped in any bayonet hole.

[0021] The third object of the present invention is to provide a fitness bench comprising the resistance structure of any of the above fitness equipment.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The resistance structure of the present application includes at least three gas springs, two of which are fixed at both ends to a first fixed seat and a slider assembly, respectively; one end of the remaining gas spring is fixed to the first fixed seat, and the other end is movably connected to the slider assembly, and a limiter is provided on the slider assembly for limiting the movement of the gas spring. The present application uses a gas spring resistance source to replace a conventional elastic rope resistance source, so that the output of resistance is more stable and the training effect is better. At the same time, the two ends of the two gas springs are set into a fixed structure, which limits the initial resistance value of the resistance structure. The initial resistance value is the smallest and is not affected by the user. When the resistance needs to be increased, the movable gas spring is limited to the slider assembly by the limiter, thereby achieving an increase in resistance.

[0024] (2) The resistance structure of the present application has multiple resistance levels by setting up multiple adjustable gas springs, thereby achieving the effect of controlling the compression of different gas springs and outputting different resistance values. The output resistance value is not only stable but also adjustable, and is suitable for a variety of people.

[0025] (3) The resistance structure of the present application is provided with a pre-tensioning module on the slider assembly, including a mounting column, a spring and a limit ring. When the pull rope is retracted, a pulling force is first applied to the mounting bracket through the movable pulley to compress the spring. As the pull rope is retracted, the spring is compressed to the maximum. After that, the sliding frame starts to move the compressed gas spring to achieve the output of the final force value. When the pull rope is released, the force of the gas spring is released earlier than the spring, and the spring is still in a compressed state, that is, the pull rope is in a taut state, which effectively solves the problem that the pull rope is easy to slip off the pulley.

[0026] (4) The resistance structure of the present application uses a reasonable layout of the movable pulley and the fixed pulley to allow the pull rope to be extended after 12 changes of direction, thereby increasing the rope extension distance and making the entire resistance structure more space-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 An overall structural diagram of a resistance structure provided in one embodiment of the present application;

[0029] Figure 2 An overall structural diagram of a resistance structure provided in an embodiment of the present application without a pull rope;

[0030] Figure 3 A main frame structure diagram provided for an embodiment of the present application;

[0031] Figure 4 An assembly diagram of a preload module and a slider assembly of a resistance structure provided in one embodiment of the present application;

[0032] Figure 5 A diagram showing the coordination relationship between the pull rope and the pulley assembly of the resistance structure provided in one embodiment of the present application;

[0033] Figure 6 A structural diagram of a training tension device provided in one embodiment of the present application;

[0034] Figure 7 for Figure 6 A magnified view of part A in FIG.

[0035] Among them: 1-main frame, 11-first fixed seat, 12-second fixed seat, 121-gas spring pressure plate, 13-third fixed seat, 14-fixed side tube, 2-gas spring assembly, 21-1st gas spring, 22-2nd gas spring, 23-3rd gas spring, 24-4th gas spring, 3-slider assembly, 31-sliding frame, 311-guide hole, 312-limiting hole, 3121-2nd limiting hole, 3122-3rd limiting hole, 32-sliding sleeve, 4-limiting piece, 5-movable pulley block, 51- Movable pulley, 511-first movable pulley, 512-second movable pulley, 52-mounting bracket, 6-preload module, 61-mounting column, 62-spring, 63-limiting ring, 7-slide rod, 8-fixed pulley group, 81-first fixed pulley, 82-second fixed pulley, 83-first changing wheel, 84-second changing wheel, 9-flying bird arm structure, 91-third changing wheel, 92-fourth changing wheel, 93-flying bird arm, 94-angle adjustment plate, 941-bayonet, 95-angle limiting card plate, 10-pull rope. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0037] The following is combined with Figure 1 To Attachment Figure 7 The present invention is described in detail with reference to specific embodiments.

[0038] See also Figures 1 to 7 The present invention provides a resistance structure of fitness equipment, which can be integrated into fitness equipment including a tension training function. For example, it can be integrated into a fitness bench for home training, so that users can perform tension training at home, but it is not limited to this. The resistance structure of the present application includes a main frame 1, a gas spring assembly 2 and a slider assembly 3, wherein: the main frame 1 provides support and installation for the resistance structure. The present application does not specifically limit the shape of the main frame 1, which can be a rectangular shape, a square shape, a trapezoidal shape or other irregular shapes, but it is not limited to this. The present application takes the main frame 1 as a rectangular shape as an example for explanation, and defines the length direction of the rectangular shape as the first direction and the width direction as the second direction.

[0039] A first fixed seat 11, a second fixed seat 12 and a third fixed seat 13 are arranged on the main frame 1 at intervals along the first direction, a fixed pulley group 8 is arranged on the first fixed seat 11 and the second fixed seat 12, and a movable pulley group 5 is arranged on the slider assembly 3; the two ends of the pull rope 10 respectively pass around the movable pulley group 5 and the fixed pulley group 8 and then extend outward from the first fixed seat 11; the slider assembly 3 is slidably arranged between the second fixed seat 12 and the third fixed seat 13 under the pulling of the pull rope 10; for example, the main frame 1 includes two fixed side tubes 14 arranged in parallel, and the two ends of the first fixed seat 11, the second fixed seat 12 and the third fixed seat 13 are respectively connected to the fixed side tube 14 through a welding process.

[0040] The gas spring assembly 2 includes at least three gas springs, two of which are fixed at both ends on the first fixed seat 11 and the slider assembly 3 respectively; one end of the remaining gas spring is fixed on the first fixed seat 11, and the other end is movably connected to the slider assembly 3, and the slider assembly 3 is provided with a limiter 4 for limiting the movement of the gas spring. The present application does not limit the fixing method of the gas spring to the first fixed seat 11 and the slider assembly 3. For example, the first fixed seat 11 is provided with a U-shaped groove corresponding to the gas spring, one end of the gas spring is fixed in the U-shaped groove by a nut, and the slider assembly 3 is provided with a mounting hole, and one end of the gas spring is fixed by a nut after passing through the mounting hole. The gas spring used in the present application can be an industrial accessory for buffering. Its principle is to fill an inert gas or an oil-gas mixture in a closed pressure cylinder so that the pressure in the cavity is several times or dozens of times higher than the atmospheric pressure, and the pressure difference generated by the cross-sectional area of ​​the piston rod being smaller than the cross-sectional area of ​​the piston is used to realize the movement of the piston rod. Due to the fundamental difference in principle from ordinary springs, the gas spring moves relatively slowly than ordinary springs, the output resistance value is more stable, and the service life is longer.

[0041] It can be known that during the training process, users of different age groups or users of different body shapes require different resistances. If the resistance is constant and cannot be adjusted, the use of fitness equipment is limited. In this application, the gas spring assembly 2 is cleverly divided into two groups, and the two ends of one group of gas springs are respectively fixed on the first fixed seat 11 and the two ends of the slider assembly 3; one end of the other group of gas springs is fixed on the first fixed seat 11, and the other end is movably set on the slider assembly 3, and each movably set gas spring is matched with a limiter 4. When it is necessary to increase the resistance, one or more gas springs are selected according to the needs, and the limiter 4 is used to limit it on the slider assembly 3 to increase the resistance in the training. When the pull rope 10 pulls the slider assembly 3 in the direction of the second fixed seat 12, the slider assembly 3 applies pressure to the piston rod of the gas spring, and the piston rod squeezes the gas in the pressure cylinder to realize the movement of the slider assembly 3. The more gas springs participating in the resistance, the greater the resistance, and the greater the pulling force required to overcome the resistance.

[0042] The present application uses a gas spring resistance source to replace the conventional elastic rope resistance source, so that the output of resistance is more stable and the training effect is better. At the same time, the two ends of the two gas springs are set to a fixed structure, which limits the initial resistance value of the resistance structure. The initial resistance value is the smallest and the initial resistance is not interfered by the user. When the resistance needs to be increased, the movable gas spring is limited to the slider assembly 3 by the limiter 4, so that the resistance is increased. It should be noted that the initial resistance value is achieved by a fixed gas spring, and the user cannot adjust the initial resistance value. The present application uses two gas springs to limit the size of the initial resistance value as an example for explanation. The two gas springs are respectively set on both sides of the slider assembly to achieve uniform pressure on the gas springs of the slider assembly. Of course, if a fixed gas spring is set, the initial resistance value can also be limited. If you want to achieve a resistance value equivalent to that of two gas springs, the resistance value of the gas spring is relatively large.

[0043] In some embodiments, see Figure 4 The slider assembly 3 includes a sliding frame 31, which is provided with a guide hole 311, and one end of the movably arranged gas spring is inserted into the guide hole 311; when the limiter 4 does not limit the gas spring, the slider assembly 3 slides to cause the gas spring and the guide hole 311 to move axially relative to each other, which can also be understood as the sliding frame 31 moves axially along the piston rod of the gas spring through the guide hole 311; when the limiter 4 limits the gas spring, the sliding assembly 3 and the gas spring are relatively fixed, and the sliding frame 31 slides to squeeze the piston rod of the gas spring. The guide hole 311 in the present application has a certain length in the axial direction, and when no tension is applied to the pull rope 10, one end of the gas spring is located in the guide hole 311 and does not extend out of the guide hole 311. When tension is applied to the pull rope 10 to make the sliding frame 31 slide, one end of the gas spring extends from the guide hole 311. The present embodiment does not limit the shape of the guide hole 311. For example, the cross-section of the guide hole 311 may be circular, polygonal, trapezoidal, etc. Preferably, the shape of the guide hole 311 matches the shape of the piston rod of the gas spring. Usually, the piston rod is circular, and the guide hole is preferably circular. The matching of the two can achieve stable axial movement of the unused gas spring.

[0044] In some embodiments, a limiting hole 312 is further provided on the sliding frame 31, which is perpendicular to and connected to the guide hole 311, and the limiting hole 312 is used to match the limiting member 4; when the pull rope 10 is not pulled or the resistance needs to be increased, the limiting member 4 is inserted into the limiting hole 312, so that the limiting member 312 abuts against the end of the gas spring, and the gas spring will participate in the resistance during the tension training process. When the resistance does not need to be increased or only a part of the resistance needs to be increased, the gas spring participating in the resistance only needs to be abutted against its end with the limiting member 4, and the limiting member 4 of the gas spring not participating in the resistance can be removed; preferably, the limiting member 4 in the present application is a latch, and the limiting hole 312 is exposed where the user can see it, which is convenient for operation.

[0045] In some embodiments, see Figure 2 There are four gas springs arranged in parallel, namely, gas spring No. 1 21, gas spring No. 2 22, gas spring No. 3 23, and gas spring No. 4 24, wherein both ends of gas spring No. 1 21 and gas spring No. 4 24 are fixed on the first fixed seat 11 and the sliding frame 31, respectively, and are symmetrically arranged along the second direction; one end of gas spring No. 2 22 and gas spring No. 3 23 is fixed on the first fixed seat 11, and the other end is movably arranged in the guide hole 311 of the sliding frame 31, and the limiting holes 312 corresponding to gas spring No. 2 23 and gas spring No. 3 23 are limiting holes 3121 No. 2 and limiting holes 3122 No. 3, respectively, and the resistance values ​​of the other four gas springs are different, so that the four gas springs divide the resistance structure into four resistance gears, thereby outputting different resistance value effects. For example, the first gear is the initial resistance, the force value is the smallest, and it is not subject to user intervention and adjustment. When the pull rope is retracted, the slider assembly 3 moves toward the direction of the second fixed seat 12 to compress the No. 1 gas spring 21 and the No. 4 gas spring 24; the resistance value of the second gear is relatively increased, specifically, the limiter 4 is inserted into the No. 2 limit hole 3121 to support the end of the piston rod of the No. 2 gas spring 22. When the pull rope is retracted, the slider assembly 3 moves toward the direction of the second fixed seat 12 to compress the No. 1 gas spring 21, the No. 2 gas spring 22 and the No. 4 gas spring 24; the resistance value of the second gear is increased again, specifically, the limiter 4 is inserted into the No. 3 limit hole 3122, By pressing against the end of the piston rod of gas spring No. 3 23, when the pull rope 10 is contracted, the slider assembly 3 moves toward the direction of the second fixed seat 12 to compress gas spring No. 1 21, gas spring No. 3 23 and gas spring No. 4 24; the 4th gear resistance value is increased again, specifically, by inserting the limit member 4 into the limit hole 3121 No. 2 and the limit hole 3122 No. 3, pressing against the end of the piston rod of gas spring No. 2 22 and the end of the piston rod of gas spring No. 3 23, when the pull rope 10 is contracted, the slider assembly 3 moves toward the direction of the second fixed seat 12 to compress gas spring No. 1 21, gas spring No. 22, gas spring No. 3 23 and gas spring No. 4 24.

[0046] It should be noted that in the present application, a plurality of adjustable gas springs are provided to control the compression of different gas springs, thereby outputting the effect of different resistance values. The output resistance value is not only stable but also adjustable, and is suitable for a variety of people.

[0047] In some embodiments, see Figure 4A movable pulley group 5 is respectively provided on both sides of the sliding frame 31, and the movable pulley group 5 includes at least one movable pulley 51 and a mounting bracket 52 for mounting the movable pulley 51, and the mounting bracket 52 is arranged on the sliding frame 31 through a pre-tightening module 6; the pre-tightening module 6 includes a mounting column 61, a spring 62 and a limit stop ring 63, one end of the mounting column 61 passes through the sliding frame 31 and is fixedly connected with the mounting bracket 52, the limit stop ring 63 is fixed to the other end of the mounting column 61, the spring 62 is sleeved on the mounting column 61, one end of the spring 62 abuts on the sliding frame 31, and the other end abuts on the limit stop ring 63, the limit stop ring 63 can be selected as a nut, and one end of the mounting column 31 is provided with a thread, which is screwed to the limit stop ring 63 through the thread. It can be understood that grooves are provided on both the movable pulley and the fixed pulley to match the pull rope 10 to prevent the pull rope 10 from coming off the pulley; when the gas spring is not compressed, the pull rope 10 is in a relaxed state and can easily come off the groove. For this reason, the present application sets a pre-tightening module 6, and the force value of the spring is smaller than that of any gas spring; when the pull rope 10 is retracted, firstly, a pulling force is applied to the mounting bracket 52 through the movable pulley 51 to compress the spring 62. As the retraction distance of the pull rope 10 increases, the spring 62 is compressed to the maximum, and then the sliding frame 31 starts to move the compressed gas spring to achieve the output of the final force value. When the pull rope 10 is released, the force value of the gas spring is released earlier than the spring 62, and the spring 62 is still in a compressed state, that is, the pull rope 10 is in a tight state, which effectively solves the problem that the pull rope 10 is easy to come off the pulley.

[0048] In some embodiments, see Figure 1 and Figure 2 A slide rod 7 is fixed between the second fixed seat 12 and the third fixed seat 13. Two slide rods 7 are respectively arranged on both sides of the sliding frame 31. A sliding sleeve 32 matching the slide rod 7 is fixed on the sliding frame 31. The slider assembly 3 is slidably set on the slide rod 7 through the sliding sleeve 32. The slide rod 7 provides guidance for the sliding of the slider assembly 3 to ensure the stability of the entire compression process.

[0049] In some embodiments, see Figure 2 The second fixed seat 12 is detachably connected to a gas spring pressure plate 121, and the gas spring is limited between the second fixed seat 12 and the gas spring pressure plate 121 in the vertical direction. The setting of the gas spring pressure plate 121 further ensures the stability of the gas spring during compression. Since the gas spring has a certain length, if only its two ends are limited, during the compression process, excessive tension will cause the gas spring to deform, affecting the training effect. The present application ensures stability during the entire compression process by setting a gas spring pressure plate 121 in the middle of the gas spring.

[0050] In some embodiments, see Figure 5, a movable pulley set 5 is provided on both sides of the slider assembly 3, and two fixed pulley sets 8 corresponding to the movable pulley sets 5 are provided on the first fixed seat 11 and the second fixed seat 12; it can be known that during the tension training process, both ends of the pull rope 10 are held by both hands, and both hands pull the pull rope 10 at the same time, and the pull rope 10 overcomes the resistance and stretches outward, so it can be known that the pull rope 10 is symmetrically arranged inside the resistance structure. The following takes one side as an example to illustrate the winding direction of the pull rope.

[0051] The movable pulley group 5 on each side includes two coaxially arranged movable pulleys 51, namely a first movable pulley 511 and a second movable pulley 512. The fixed pulley group 8 on the second fixed seat 12 includes a first fixed pulley 81 and a second fixed pulley 82 corresponding to the two movable pulleys 51 respectively. The axis of the first fixed pulley 81 is perpendicular to the axis of the second fixed pulley 82, and the axis of the second fixed pulley 82 is parallel to the axes of the two movable pulleys 51; the fixed pulley group 8 on the second fixed seat 12 also includes a first changing wheel group arranged at the upper end of the second fixed seat 12, and the first changing wheel group includes two first changing wheels 53 whose axes are parallel to the axis of the first fixed pulley 81; the fixed pulley group 8 on the first fixed seat 11 includes a second changing wheel 84.

[0052] One end of the pull rope 10 is wrapped around the first movable pulley 511 after changing direction for the first time from the first fixed pulley 81, is wrapped around the second fixed pulley 82 after changing direction for the second time from the first movable pulley 511, is wrapped around the second movable pulley 512 after changing direction for the third time from the second fixed pulley 82, is wrapped around the first changing wheel 83 after changing direction for the fourth time from the second movable pulley 512, is wrapped around the second changing wheel 84 for the sixth time after changing direction for the fifth time from the first changing wheel 83; thus, the pull rope 10 is extended after a total of 12 changes in direction, which increases the rope output distance and makes the entire resistance structure more space-saving.

[0053] When in use, the user acts on the two ends of the pull rope 10 with both hands, contracts and controls the length of the pull rope, and drives the slider assembly 3 to move back and forth between the second fixed seat 12 and the third fixed seat 13 through the pull rope 10, thereby compressing the gas spring assembly 2 or releasing the gas spring assembly 2, and finally achieving the training effect; compared with the elastic rope in the prior art, the gas spring has a consistent resistance value throughout the entire action process, and the rope output distance is increased by setting the movable pulley group, while saving the space required for fitness equipment.

[0054] See also Figure 6 and Figure 7The present invention also provides a tension training device, comprising the resistance structure of any of the fitness equipments mentioned above, and also comprising a flying bird arm structure 9, the flying bird arm structure 9 comprising a third direction-changing wheel 91, a fourth direction-changing wheel 92 and a flying bird arm 93, the pull rope 10 extends from the resistance structure, passes through the third direction-changing wheel 91 and the fourth direction-changing wheel 92, and then passes through the flying bird arm 93 and then extends; the flying bird arm 93 is connected to the fourth direction-changing wheel 92 through an angle adjustment disk 94, the outer edge of the angle adjustment disk 94 is provided with a plurality of bayonet holes 941 in the circumferential direction, and an angle limiting clamping plate 95 is provided on the outer side of the angle adjustment disk 94, and the angle limiting clamping plate 95 can be clamped in any bayonet hole 941, thereby realizing the limiting fixation of the flying bird arm 93 at different angles. During use, the user can adjust the outward expansion angle of the flying bird arm 93 according to the training requirements, such as the flying bird arm 93 can be expanded outward at angles of 30°, 60°, 90°, 120°, 150°, 180°, etc., but is not limited thereto. The tension training device provided in the present application adopts all the technical solutions of all the embodiments of the above-mentioned resistance structure, and therefore at least has all the beneficial effects brought by the technical solutions of the embodiments of the above-mentioned resistance structure, which will not be described one by one here.

[0055] The present invention also provides a fitness bench, including the resistance structure of any one of the fitness equipment described above. The fitness bench provided in this application adopts all the technical solutions of all the embodiments of the resistance structure described above, and therefore at least has all the beneficial effects brought by the technical solutions of the embodiments of the resistance structure described above, which will not be described one by one here.

[0056] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A resistance structure of a fitness equipment, characterized in that: It includes a main frame, a gas spring assembly and a slider assembly, wherein: The main frame is provided with a first fixed seat, a second fixed seat and a third fixed seat at intervals along the first direction, the first fixed seat and the second fixed seat are both provided with a fixed pulley group, and the slider assembly is provided with a movable pulley group; the two ends of the pull rope are respectively passed around the movable pulley group and the fixed pulley group and extend outward from the first fixed seat; the slider assembly is slidably provided between the second fixed seat and the third fixed seat under the pulling of the pull rope; The gas spring assembly includes at least three gas springs, wherein two ends of the gas springs are respectively fixed to the first fixing seat and the slider assembly; one end of the remaining gas spring is fixed to the first fixing seat, and the other end is movably connected to the slider assembly, and the slider assembly is provided with a limiter for limiting the movement of the gas spring.

2. The resistance structure of the fitness equipment according to claim 1, characterized in that: The slider assembly comprises a sliding frame, the sliding frame is provided with a guide hole, and one end of the movably arranged gas spring is inserted into the guide hole; When the limiting member does not limit the gas spring, the slider assembly slides to cause the gas spring and the guide hole to move axially relative to each other; when the limiting member limits the gas spring, the sliding assembly and the gas spring are relatively fixed.

3. The resistance structure of the fitness equipment according to claim 2, characterized in that: The sliding frame is also provided with a limiting hole which is perpendicular to and connected with the guide hole; when the pull rope is not pulled, the limiting member is inserted into the limiting hole so that the limiting member abuts against the end of the gas spring.

4. The resistance structure of the fitness equipment according to claim 2, characterized in that: A movable pulley group is respectively provided on both sides of the sliding frame, and the movable pulley group includes at least one movable pulley and a mounting bracket for mounting the movable pulley, and the mounting bracket is arranged on the sliding frame through a pre-tightening module; The preload module includes a mounting column, a spring and a limit stop ring. One end of the mounting column passes through the sliding frame and is fixedly connected to the mounting bracket. The limit stop ring is fixed to the other end of the mounting column. The spring is sleeved on the mounting column, one end of the spring abuts against the sliding frame, and the other end abuts against the limit stop ring.

5. The resistance structure of the fitness equipment according to claim 1, characterized in that: Four gas springs are arranged in parallel, wherein two gas springs located on the outside are fixed on the slider assembly, and two gas springs located on the inside are movably arranged on the slider assembly; The resistance values ​​of the four gas springs are different, and the four gas springs enable the resistance structure to have four resistance gears.

6. The resistance structure of the fitness equipment according to claim 1, characterized in that: A slide bar is fixed between the second fixing seat and the third fixing seat, and the slider assembly is slidably arranged on the slide bar.

7. The resistance structure of the fitness equipment according to claim 1, characterized in that: A gas spring pressure plate is detachably connected to the second fixing seat, and the gas spring is located between the second fixing seat and the gas spring pressure plate in the vertical direction.

8. The resistance structure of the fitness equipment according to claim 1, characterized in that: A movable pulley group is respectively provided on both sides of the slider assembly, and two fixed pulley groups corresponding to the movable pulley groups are respectively provided on the first fixed seat and the second fixed seat; The movable pulley group includes two coaxially arranged movable pulleys, the fixed pulley group on the second fixed seat includes a first fixed pulley and a second fixed pulley corresponding to the two movable pulleys respectively, and the axis of the first fixed pulley is arranged perpendicular to the axis of the second fixed pulley; the fixed pulley group on the second fixed seat also includes a first changing wheel; the fixed pulley group on the first fixed seat includes a second changing wheel.

9. A tension training device, comprising the resistance structure of the fitness equipment according to any one of claims 1 to 8, characterized in that: It also includes a flying bird arm structure, which includes a third direction-changing wheel, a fourth direction-changing wheel and a flying bird arm, and the pull rope extends from the resistance structure, passes through the third direction-changing wheel and the fourth direction-changing wheel, and then passes through the flying bird arm and then extends out; The bird arm is connected to the fourth direction-changing wheel through an angle adjustment disk. A plurality of bayonet holes are circumferentially arranged on the outer edge of the angle adjustment disk. An angle limiting clamping plate is arranged on the outer side of the angle adjustment disk. The angle limiting clamping plate can be clamped in any one of the bayonet holes.

10. A fitness bench, characterized in that: A resistance structure of fitness equipment comprising any one of claims 1-8.

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