Damping mechanism and fitness equipment

Abstract

The present invention provides a damping mechanism and fitness equipment. The damping mechanism includes two fluid-driven structures, a flow control valve, and a first connecting member and a second connecting member that are movable relative to each other. One end of the two fluid-driven structures is connected via the flow control valve. The first connecting member is fixedly connected to the flow control valve, and the second connecting member is fixedly connected to the fixed ends of the two fluid-driven structures. In the damping mechanism and fitness equipment provided by the present invention, when the first connecting member and the second connecting member move relative to each other, one of the fluid-driven structures is compressed and the other fluid-driven structure is stretched. The damping between the first and second connecting members can be adjusted via the flow control valve. The damping mechanism has a long service life and does not produce irreversible structural deformation like a spring.

Description

Technical Field

[0001] The present invention belongs to the technical field of sports equipment, and more particularly, relates to a damping mechanism and fitness equipment. Background Art

[0002] With the continuous improvement of living standards, people are paying more and more attention to their physical health, especially white-collar workers working in cities. Sitting in front of computers for long periods of time is very harmful to the body. In order to exercise and relieve the problems of shoulder, neck and lumbar diseases, a variety of fitness equipment has gradually emerged.

[0003] Current equipment, including pullers, arm trainers, sit-up machines, and fly machines, all feature damping mechanisms, most often using damping shafts and springs. Damping shafts are prone to wear and tear over time, gradually reducing their damping function and shortening their service life. Springs and other structures are also prone to deformation, impacting exercise effectiveness. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a damping mechanism and fitness equipment to solve the technical problems in the prior art that the damping structure has a short service life or is easily deformed.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a damping mechanism, including two fluid-driven structures, a flow regulating valve, and a first connecting member and a second connecting member that can move relative to each other, one end of the two fluid-driven structures is connected through the flow regulating valve, the first connecting member is fixedly connected to the flow regulating valve, and the second connecting member is fixedly connected to the fixed ends of the two fluid-driven structures, when the first connecting member and the second connecting member move relative to each other, one of the fluid-driven structures is compressed and the other fluid-driven structure is stretched, and the damping between the first connecting member and the second connecting member can be adjusted by the flow regulating valve.

[0006] The present invention further provides a fitness device, comprising the above-mentioned damping mechanism, and further comprising a first rod and a second rod, wherein the first rod is connected to the first connecting member, and the second rod is connected to the second connecting member.

[0007] The beneficial effects of the damping mechanism and fitness equipment provided by the present invention are as follows: Compared with the prior art, the damping mechanism of the present invention includes two fluid-driven structures, a flow control valve, and a first connecting member and a second connecting member that can move relative to each other. The flow control valve is connected through the two fluid-driven structures, the first connecting member is fixedly connected to the flow control valve, and the second connecting member is fixedly connected to the fixed ends of the two fluid-driven structures. When the first connecting member and the second connecting member move relative to each other, one of the fluid-driven structures compresses and the other fluid-driven structure stretches. The fluid in the first fluid-driven structure flows through the flow control valve into the second fluid-driven structure, thereby forming a damping mechanism. This damping mechanism does not produce irreversible structural deformation like a spring and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative labor.

[0009] Figure 1 A three-dimensional structural diagram of a damping mechanism provided in an embodiment of the present invention;

[0010] Figure 2 A partial exploded structural diagram of a damping mechanism provided in an embodiment of the present invention;

[0011] Figure 3 A diagram showing the internal structure of a damping mechanism provided by an embodiment of the present invention;

[0012] Figure 4 A three-dimensional structural diagram of a fluid drive structure provided by an embodiment of the present invention;

[0013] Figure 5 A three-dimensional structural diagram of a support column provided in an embodiment of the present invention;

[0014] Figure 6 A three-dimensional structural diagram of a first flow control valve provided by an embodiment of the present invention;

[0015] Figure 7 for Figure 6 Side view of the medium flow control valve;

[0016] Figure 8 for Figure 6 Partial structural diagram of the medium flow regulating valve (fixed seat not shown);

[0017] Figure 9 A cross-sectional view of a hose provided by an embodiment of the present invention;

[0018] Figure 10 A three-dimensional structural diagram of a second flow control valve provided by an embodiment of the present invention;

[0019] Figure 11 for Figure 10 Cross-sectional view of the medium flow control valve;

[0020] Figure 12 A three-dimensional structural diagram of a plug provided in an embodiment of the present invention;

[0021] Figure 13 A three-dimensional structural diagram of a first fitness device provided by an embodiment of the present invention;

[0022] Figure 14 A three-dimensional structural diagram of a handle structure provided by an embodiment of the present invention;

[0023] Figure 15 An exploded structural diagram of a handle structure provided by an embodiment of the present invention;

[0024] Figure 16 A three-dimensional structural diagram of a handle body provided in an embodiment of the present invention;

[0025] Figure 17 A three-dimensional structural diagram of a second fitness device provided by an embodiment of the present invention;

[0026] Figure 18 A three-dimensional structural diagram of a third fitness device provided by an embodiment of the present invention;

[0027] Figure 19 A three-dimensional structural diagram of a fitness base structure provided by an embodiment of the present invention;

[0028] Figure 20 An exploded structural diagram of a fitness base structure provided by an embodiment of the present invention;

[0029] Figure 21 A cross-sectional view of a fitness base structure provided by an embodiment of the present invention;

[0030] Figure 22 A three-dimensional structural diagram of a cover plate provided in an embodiment of the present invention.

[0031] Among them, the reference numerals in the figures are:

[0032] 100-damping mechanism; 200-first rod; 300-second rod; 400-handle structure; 500-fitness base structure;

[0033] 1- fluid driving structure; 11- telescopic unit; 12- supporting structure; 120- connecting hole;

[0034] 2-flow control valve; 21-first linear drive mechanism; 211-first motor; 212-first screw rod; 213-first nut seat; 214-first guide rod; 22-first fixing seat; 221-bottom plate; 222-top plate; 223-side plate; 23-pressing block; 24-hose; 241-hard protective tube; 240-edge; 2401-first inner wall; 2402-second inner wall; 251-first sensor; 252-second sensor; 253-first trigger plate; 254-second trigger plate; 261-second linear drive mechanism; 2611-second motor ;2612-second screw rod;2613-second nut seat;2614-second guide rod;262-plug;2621-connecting section;2622-blocking section;26220-pressure relief groove;2623-stop step;263-pipeline;2630-entry port;264-sealing structure;2641-folding cylinder;2642-end plate;2643-sealing chamber;265-seal;266-sealing gasket;267-second fixing seat;2681-third sensor;2682-fourth sensor;2683-third trigger plate;2684-fourth trigger plate;

[0035] 31-first connecting member; 32-second connecting member; 321-fork-shaped member; 33-housing; 331-upper housing; 332-lower housing; 3320-avoidance hole; 34-support shaft; 341-limiting sleeve; 342-flange; 35-radial connecting rod;

[0036] 41 - handle body; 411 - grip portion; 412 - second rotating connection member; 4120 - L-shaped accommodating space; 4121 - handle connection portion; 41211 - third abutting surface; 41212 - fourth abutting surface; 41213 - transition surface; 4122 - rotating shaft connection portion; 41220 - second shaft hole; 42 - first rotating connection member; 420 - step structure; 421 - first abutting surface; 422 - second abutting surface; 423 - first shaft hole; 43 - rotating fixing member;

[0037] 51-base; 511-substrate; 5110-second hollow hole; 512-cover plate; 5121-first hollow hole; 5122-guide groove; 5123-first avoidance hole; 5124-second avoidance hole; 5125-first accommodating cavity; 5126-second accommodating cavity; 52-movable rod; 521-positioning step; 53-elastic member; 54-fixing rod; 55-paddle; 56-guide rod. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] The damping mechanism 100 provided by the embodiment of the present invention is now described. The damping mechanism 100 can be applied to various fitness equipment such as pullers, arm trainers, sit-ups, and flyers. Fitness enthusiasts need to overcome the resistance of the damping mechanism 100 to perform work in order to achieve the effect of exercise.

[0043] Please also refer to Figures 1 to 3The damping mechanism 100 includes two fluid-driven structures 1, a flow control valve 2, a first connecting member 31, and a second connecting member 32. The fluid-driven structure 1 is stretched or compressed by a fluid. When the fluid flows into the fluid-driven structure 1, the volume of the fluid-driven structure 1 increases, and when the fluid flows out of the fluid-driven structure 1, the volume of the fluid-driven structure 1 decreases. The fluid can be a gas, a liquid, or the like, such as air, water, or oil. The two fluid-driven structures 1 are connected through the flow control valve 2, which is used to regulate the flow of the fluid. The first connecting member 31 is fixedly connected to the flow control valve 2, and the second connecting member 32 is fixedly connected to the fixed ends of the two fluid-driven structures 1. When the first connecting member 31 and the second connecting member 32 move relative to each other, the flow control valve 2 moves with the first connecting member 31. Since the two fluid-driven structures 1 are connected by the flow control valve 2, when the flow control valve 2 moves, the volume of one fluid-driven structure 1 increases, and it is in a stretched state, while the volume of the other fluid-driven structure 1 decreases, and it is in a compressed state. Specifically, the flow control valve 2 moves toward the first fluid drive structure 1, and the fluid in the first fluid drive structure 1 moves through the flow control valve 2 to the second fluid drive structure 1. Then, the volume of the first fluid drive structure 1 decreases and is compressed, while the volume of the second fluid drive structure 1 increases and is stretched. The flow control valve 2 moves toward the second fluid drive structure 1, and the fluid in the second fluid drive structure 1 moves through the flow control valve 2 to the first fluid drive structure 1. Then, the volume of the second fluid drive structure 1 decreases and is compressed, while the volume of the first fluid drive structure 1 increases and is stretched. By changing the channel size of the flow control valve 2, the magnitude of the force required to drive the first connecting member 31 and the flow control valve 2 to move can be adjusted, that is, the damping during the relative movement of the first connecting member 31 and the second connecting member 32 can be adjusted. When a fitness person manually causes the first connecting member 31 and the second connecting member 32 to move relative to each other, the fluid in one fluid drive structure 1 will enter the other fluid drive structure 2, and the fluid resistance needs to be overcome, thereby achieving an exercise effect.

[0044] The damping mechanism 100 in the above embodiment includes two fluid-driven structures 1, a flow control valve 2, and a first connecting member 31 and a second connecting member 32 that can move relative to each other. The flow control valve 2 is connected through the two fluid-driven structures 1. The first connecting member 31 is fixedly connected to the flow control valve 2, and the second connecting member 32 is fixedly connected to the fixed ends of the two fluid-driven structures 2. When the first connecting member 31 and the second connecting member 32 move relative to each other, one fluid-driven structure 1 is compressed and the other fluid-driven structure 1 is stretched. The fluid in the first fluid-driven structure 1 flows through the flow control valve 2 into the second fluid-driven structure 1, thereby forming the damping mechanism 100. This damping mechanism 100 does not undergo irreversible structural deformation like a spring, and has a longer service life.

[0045] In one embodiment of the present invention, see Figure 3 The two fluid-driven structures 1 and the flow control valve 2 are arranged in a ring. The central axis of the ring structure is defined as the rotation axis, and the first connecting member 31 moves circumferentially about this rotation axis. Specifically, the first connecting member 31 can move clockwise to compress one of the fluid-driven structures 1, and the first connecting member 31 can also rotate counterclockwise to compress the other fluid-driven structure 1. In this way, the damping mechanism 100 in this embodiment acts as a damping shaft. When the first connecting member 31 rotates about the center point, a certain amount of fluid resistance must be overcome. Moreover, the amount of fluid resistance that needs to be overcome can be adjusted by adjusting the channel size of the flow control valve 2.

[0046] In other embodiments, the two fluid drive structures 1 and the flow regulating valve 2 can be connected in a straight line. The first connecting member 31 also needs to overcome a certain resistance when performing linear motion, which has an exercise effect on fitness people.

[0047] In one embodiment of the present invention, see Figure 3 and Figure 4 The fluid-driven structure 1 includes a plurality of telescopic units 11 connected in series, with adjacent telescopic units 11 connected by a support structure 12. The support structure 12 makes the fluid-driven structure 1 more stable, allowing for a longer length of the fluid-driven structure 1 as required. During the stretching and compression process, the fluid-driven structure 1 can maintain a relatively stable structure without collapse or deformation.

[0048] The two telescopic units 11 may be sealed and connected via the support structure 12 to prevent fluid from leaking from the connection between the two telescopic units 11 .

[0049] Optionally, the telescopic unit 11 is a folding airbag, the periphery of which is a folding structure, so that the folding airbag can be contracted to a thinner structure or stretched to a smaller structure, with a larger telescopic and stretching range. The interior of the folding airbag can be filled with gas or fluid.

[0050] In other embodiments, the fluid driving structure 1 may also be a hydraulic cylinder.

[0051] In one embodiment of the present invention, when the first connecting member 31 moves relative to the second connecting member 32, the force required for the relative movement between the two can be set to a constant force. Specifically, the damping mechanism 100 further includes a pressure sensor for detecting the pressure generated when the first connecting member 31 moves relative to the second connecting member 32. If the pressure value detected by the pressure sensor increases, the flow control valve 2 is adjusted to increase the flow rate of the flow control valve 2, thereby reducing the pressure generated by the movement of the first connecting member 31 and the second connecting member 32 and returning it to the set pressure value. If the pressure value detected by the pressure sensor decreases, the flow control valve 2 is adjusted to reduce the flow rate of the flow control valve 2, thereby increasing the pressure generated by the movement of the first connecting member 31 and the second connecting member 32 and returning it to the set pressure value.

[0052] Optionally, the force required for the first connecting member 31 to generate relative movement with respect to the second connecting member 32 can be set to multiple levels of adjustment, and the preset pressure value of the pressure sensor can be set to multiple levels.

[0053] Optionally, in the absence of external force, the first connecting member 31 and the second connecting member 32 may generate relative motion, so that the two fluid-driven structures 1 gradually return to their initial states.

[0054] In one embodiment of the present invention, see Figure 3 and Figure 5 The damping mechanism 100 further includes a support shaft 34 and a radial connecting rod 35. The two fluid drive structures 1 and the flow control valve 2 form an annular structure. The support shaft 34 is disposed at the center axis of the annular structure. The support shaft 34 is fixedly disposed and is used to support the fluid drive structure 1 and can also be used to support structures such as the flow control valve 2.

[0055] Specifically, one end of the radial connecting rod 35 is sleeved on the support shaft 34, and the other end of the radial connecting rod 35 is fixed to the support structure 12. In this way, when the fluid-driven structure 1 is extended or shortened, the position of the support structure 12 also changes accordingly. Since the fluid-driven structure 1 is arc-shaped, the support structure 12 always moves in a circular motion about the central axis. The radial connecting rod 35 is sleeved on the support shaft 34, and the radial connecting rod 35 and the support structure 12 can rotate about the support shaft 34 as the central axis. In this way, the cooperation between the radial connecting rod 35 and the support structure 12 can make the support structure 12 always move in a circular motion, thereby guiding and supporting the extension and shortening of the fluid-driven structure 1, preventing the fluid-driven structure 1 from circumferential and radial runout, and thus preventing the fluid-driven structure 1 from severe deformation and structural collapse during the extension or shortening process.

[0056] Optionally, one end of the flow control valve 2 extends to fit around the support shaft 34, and the other end of the flow control valve 2 is fixed to the aforementioned first connecting member 31. When the exerciser moves the first connecting member 31, the flow control valve 2 moves accordingly, and the flow control valve 2 rotates about the central axis of the support shaft 34. In this way, the support shaft 34 can guide the circumferential movement of the flow control valve 2, preventing the flow control valve 2 from radially retracting toward the support shaft 34, and also preventing the flow control valve 2 from circumferential and radial runout.

[0057] In one embodiment of the present invention, see Figures 3 to 5 The support structure 12 is provided with N connecting holes 120 or N groups of connecting holes 120 in sequence along the axial direction of the support shaft 34. The number of support structures 12 and radial connecting rods 35 is N. Each support structure 12 is connected to a corresponding radial connecting rod 35, and each radial connecting rod 35 is connected to one of the connecting holes 120 or a group of connecting holes 120 on the corresponding support structure 12. Each radial connecting rod 35 is sleeved on one end of the support shaft 34 and arranged in sequence along the axial direction of the support shaft 34. The other end of each radial connecting rod 35 is mated and connected to the corresponding connecting hole 120 or group of connecting holes 120.

[0058] For example, four connecting holes 120 are sequentially opened on the support structure 12 along the axial direction of the support shaft 34. The four connecting holes 120 are respectively a first connecting hole, a second connecting hole, a third connecting hole, and a fourth connecting hole. The number of radial connecting rods 35 is also four, and the number of support structures 12 is also four. One end of the first radial connecting rod 35 is connected to the first connecting hole on the first support structure 12, and the other end is sleeved on the first section of the support shaft 34. One end of the second radial connecting rod 35 is connected to the second connecting hole on the second support structure 12, and the other end is sleeved on the second section of the support shaft 34. One end of the third radial connecting rod 35 is connected to the third connecting hole on the third support structure 12, and the other end is sleeved on the third section of the support shaft 34. One end of the fourth radial connecting rod 35 is connected to the fourth connecting hole on the fourth support structure 12, and the other end is sleeved on the fourth section of the support shaft 34.

[0059] In this way, the specific structure of the support structure 12 connected to each radial connecting rod 35 can be completely the same, and there is no need to use different support structures 12 according to the axial position of the radial connecting rod 35.

[0060] Optionally, see Figure 5The support shaft 34 is provided with a plurality of limiting sleeves 341 in sequence along its axial direction, and the number of limiting sleeves 341 is the same as the number of radial connecting rods 35. The end of each radial connecting rod 35 is set in the corresponding limiting sleeve 341, and the corresponding radial connecting rod 35 is axially limited by the limiting sleeve 341. Alternatively, the support shaft 34 is provided with a plurality of limiting grooves in sequence along its axial direction, and the number of limiting grooves is the same as the number of radial connecting rods 35. The end of each radial connecting rod 35 is limited in the limiting groove. In this way, scratching and interference between two axially adjacent radial connecting rods 35 of the support shaft 34 can be prevented, so that the movement of the radial connecting rod 35 and the support structure 12 is smoother.

[0061] Among them, the support shaft 34 can be sleeved by one end of the flow control valve 2 at the midpoint of its axial direction, and the flow control valve 2 is provided with a limiting sleeve 341 or a limiting groove at both ends along the axial direction of the support shaft 34, so that the circumferential movement of the flow control valve 2 is smoother.

[0062] In one embodiment of the present invention, see Figure 2 The damping mechanism 100 further includes a housing 33. Both the fluid-driven structure 1 and the flow control valve 2 are disposed within the housing 33, which encloses and secures the fluid-driven structure 1 and the flow control valve 2. A second connecting member 32 is fixedly connected to the housing 33. When used by a fitness enthusiast, the fitness enthusiast can hold the second connecting member 32 with one hand and the first connecting member 31 with the other, moving the first connecting member 31 relative to the second connecting member 32 to achieve fitness. Both the second connecting member 32 and the first connecting member 31 can be rod-shaped, making them easier for fitness enthusiasts to hold.

[0063] Alternatively, see 2 and Figure 5 The second connecting member 32 can be directly fixedly connected to the support shaft 34 via a fork-shaped member 321, thereby fixing the second connecting member 32, the support shaft 34, and the housing 33 to each other. The fork-shaped member 321 comprises a fork handle and two tines. The second connecting member 32 is fixedly connected to the fork handle. The ends of the two tines, away from the fork handle, are fixedly connected to opposite ends of the support shaft 34, making the second connecting member 32 more stable when subjected to force. Both ends of the support shaft 34 are fixedly connected to the tines via flanges 342.

[0064] In one embodiment of the present invention, see Figure 2 The housing 33 may be disc-shaped. The housing 33 may include an upper housing 331 and a lower housing 332 detachably connected to the upper housing 331, facilitating assembly of the fluid drive structure 1 and the flow control valve 2. One end of each of the two fluid drive structures 1 is connected to the flow control valve 2, and the other end of each of the two fluid drive structures 1 is fixed to the housing 33.

[0065] One end of the first connecting member 31 is fixed to the flow control valve 2, while the other end of the first connecting member 31 extends away from the housing 33, that is, extends to the outside of the housing 33, making it easier for fitness enthusiasts to grasp. Because the first connecting member 31 moves with the flow control valve 2, to prevent interference between the housing 33 and the flow control valve 2 and / or the movable rod, a clearance hole 3320 is provided in the housing 33. This clearance hole 3320 allows for the flow control valve 2 and / or the movable rod to pass through. When the housing 33 is disc-shaped, the clearance hole 3320 is provided on the sidewall of the housing 33 and is an arc-shaped hole.

[0066] In one embodiment of the present invention, see Figure 6 and Figure 7 The flow control valve 2 includes a first linear drive mechanism 21, a pressure block 23, a hose 24 and a first fixed seat 22. The hose 24 is for gas, liquid and other fluids to pass through. By controlling the size of the hose 24 channel, the flow of the hose 24 can be adjusted. The first linear drive mechanism 21 can output linear motion, and the pressure block 23 is fixed to the moving end of the first linear drive mechanism 21, so that the pressure block 23 can perform linear motion. The first fixed seat 22 is fixedly set, and the hose 24 is set between the pressure block 23 and the first fixed seat 22. The material of the hose 24 is relatively soft and can be deformed after being squeezed. The channel area inside it also changes when it is deformed. After the hose 24 is squeezed, the channel area becomes smaller, and the fluid passing through the flow control valve per unit time also becomes less.

[0067] Specifically, combined Figure 6 When the flow rate of the flow control valve 2 needs to be reduced, the first linear drive mechanism 21 operates, causing the pressing block 23 to move downward, squeezing and deforming the hose 24, reducing the passage area within the hose 24, and reducing the amount of fluid that can pass through the flow control valve 2 per unit time. When the flow rate of the flow control valve 2 needs to be increased, the first linear drive mechanism 21 operates, causing the pressing block 23 to move upward, reducing the deformation of the hose 24, increasing the passage area within the hose 24, and increasing the amount of fluid that can pass through the flow control valve 2 per unit time. Under the action of the first linear drive mechanism 21, the pressing block 23 is pressed downward, cooperating with the first fixing seat 22 to squeeze the hose 24, thereby closing the passage within the hose 24.

[0068] In one embodiment of the present invention, the length direction of the hose 24 is perpendicular to the movement direction of the pressing block 23, so that when the pressing block 23 is pressed downward, the hose 24 can be effectively compressed within the shortest stroke.

[0069] In one embodiment of the present invention, see Figure 9The cross section of the hose 24 is elliptical, and the minor axis of the ellipse is parallel to the direction of movement of the pressing block 23. In other words, the pressing block 23 presses down to close the passage of the hose 24, and the distance required to move is approximately the length of the minor axis of the ellipse. The pressing block 23 needs to move a short distance, so it can quickly and effectively block and open the passage in the hose 24.

[0070] In other embodiments, the cross-section of the hose 24 is elliptical, and the short axis of the ellipse can be set at an acute angle to the movement direction of the pressure block 23. After reaching a predetermined movement stroke, the pressure block 23 can also press the hose 24 and disconnect the channel inside the hose 24.

[0071] In other embodiments, the cross-section of the hose 24 may also be circular, triangular, diamond-shaped, etc. The cross-sectional shape of the hose 24 is not limited here.

[0072] In one embodiment of the present invention, see Figure 9 The cross section of the hose 24 is elliptical, and the minor axis of the ellipse is parallel to the direction of movement of the pressure block 23. Furthermore, the intersection of the inner wall of the hose 24 and the major axis of the ellipse has an edge 240. The two adjacent inner walls forming the edge 240 are a first inner wall 2401 and a second inner wall 2402. When the hose 24 is squeezed by the pressure block 23, the first inner wall 2401 and the second inner wall 2402 gradually overlap, allowing the left and right sides of the hose 24 to be completely closed. Compared to the structure of the left and right sides of the hose 24 being circular arc-shaped, Figure 9 With the structure in FIG, the passage of the hose 24 is more easily disconnected, and there will be no situation where the flow regulating valve cannot be completely closed.

[0073] In the above embodiment, it can also be understood that the cross-section of the hose 24 is rhombus-shaped, with the shorter diagonal of the rhombus parallel to the direction of movement of the pressure block 23. The two vertex angles where the rhombus intersects with the longer diagonal are first vertex angles, which are the aforementioned corners 240, and the two vertex angles where the rhombus intersects with the shorter diagonal are second vertex angles. When the hose 24 is squeezed by the pressure block 23, the two first vertex angles of the rhombus gradually decrease until they are completely closed, and the second vertex angles correspondingly gradually increase. The two second vertex angles can be rounded to prevent the hose 24 from cracking at the second vertex angles after repeated pressure from the pressure block 23.

[0074] In one embodiment of the present invention, see Figure 9The wall thickness of hose 24 is greatest at corner 240. That is, the wall thickness of hose 24 at corner 240 is greater than that of other parts of hose 24. Over extended use, the junction of the two sidewalls (first inner wall 2401 and second inner wall 2402) that make up corner 240 can bend repeatedly and easily break. Increasing the wall thickness at this location can reduce the likelihood of breakage and extend the service life of hose 24.

[0075] In one embodiment of the present invention, see Figure 8 The first linear drive mechanism 21 includes a first motor 211, a first screw rod 212, a first nut seat 213 and a first guide rod 214. The first motor 211 can output rotational motion, and the first screw rod 212 is connected to the rotational motion end of the first motor 211, and the first motor 211 can drive the first screw rod 212 to rotate. The first nut seat 213 is threadedly connected to the first screw rod 212, and the first guide rod 214 is inserted into the first nut seat 213, and the first guide rod 214 and the first screw rod 212 are parallel to each other. When the first screw rod 212 rotates, the first nut seat 213 moves along the length direction of the first screw rod 212. Under the guidance of the first guide rod 214, the first nut seat 213 can be prevented from circumferential rotation and can ensure the smooth linear motion of the first nut seat 213. The pressure block 23 is fixedly connected to the first nut seat 213. When the first nut seat 213 moves horizontally, the pressure block 23 also moves synchronously. Therefore, when the first motor 211 is working, the pressing block 23 can reciprocate along the length direction of the first screw rod 212 .

[0076] The number of first guide rods 214 can be multiple, and the number of guide holes in the first nut seat 213 is the same as the number of first guide rods 214. The first guide rods 214 are installed through the corresponding guide holes. The first guide rods 214 are arranged around the first screw rod 212. For example, there are two first guide rods 214, one on each side of the first screw rod 212; or there are four first guide rods 214, circumferentially arranged around the first screw rod 212.

[0077] In other embodiments of the present invention, the first linear drive mechanism 21 is a mechanism capable of outputting linear motion, such as a linear motor, a pneumatic cylinder, or a hydraulic cylinder. Alternatively, the first linear drive mechanism 21 includes a first motor 211 that outputs rotational motion, a gear, and a rack. The gear is connected to the moving end of the first motor 211, the rack and the gear mesh with each other, and the pressure block 23 is connected to the rack. In this way, when the first motor 211 is operating, it can also drive the pressure block 23 to move linearly.

[0078] In one embodiment of the present invention, see Figures 6 to 8The first fixing seat 22 includes a bottom plate 221, two side plates 223, and a top plate 222. The top and bottom ends of the side plates 223 are connected to the top plate 222 and the bottom plate 221, respectively, so that the bottom plate 221, the two side plates 223, and the top plate 222 form a frame-shaped structure. The hose 24 is arranged between the bottom plate 221 and the pressing block 23. When the pressing block 23 is pressed downward, the hose 24 is clamped between the bottom plate 221 and the pressing block 23, thereby adjusting the flow rate of the hose 24. The hose 24 is arranged through the gap between the two side plates 223, and both ends of the hose 24 can be fixed to the bottom plate 221.

[0079] The outer circumference of the hose 24 can be sheathed with a hard protective tube 241. The hard protective tube 241 is divided into two sections, with a gap between the two sections, leaving a portion of the hose 24 exposed. The pressing block 23 faces the exposed portion of the hose 24. When the pressing block 23 is pressed downward, it compresses the hose 24 and deforms it. The hard protective tube 241 protects the unexposed portion of the hose 24, leaving only a portion exposed for the pressing block 23 to compress. This extends the service life of the hose 24 and also provides a certain shaping effect.

[0080] Optionally, the first motor 211 is fixed on the top plate 222 . The first motor 211 can be fixed on the side of the top plate 222 facing away from the side plate 223 . The rotating end of the first motor 211 passes through the top plate 222 to between the two side plates 223 and is connected to the first screw rod 212 .

[0081] Optionally, the first screw rod 212, the first nut seat 213, and the first guide rod 214 are all disposed between the two side plates 223. The two side plates 223 provide a certain degree of protection for the first screw rod 212, the first nut seat 213, and the first guide rod 214. In this embodiment, there are two first guide rods 214, one on each side of the first screw rod 212. This reduces the width of the space occupied by the first screw rod 212, the first nut seat 213, and the first guide rod 214, thereby reducing the distance between the two side plates 223 and making the structure of the flow control valve more compact. The two ends of the first guide rod 214 are respectively fixed to the top plate 222 and the bottom plate 221, thereby securing the first guide rod 214.

[0082] In one embodiment of the present invention, see Figure 6 and Figure 7A first sensor 251 and a second sensor 252 are provided on the first fixing seat 22. The first sensor 251 and the second sensor 252 are respectively provided at the two ends of the travel of the pressure block 23 and are used to detect whether the pressure block 23 has reached the limit position. Specifically, the first sensor 251 is used to detect whether the pressure block 23 has released the hose 24, that is, whether the pressure block 23 is at the highest point, and the second sensor 252 is used to detect whether the pressure block 23 has pressed the hose 24, that is, whether the pressure block 23 is at the lowest point. Among them, a first trigger piece 253 and a second trigger piece 254 can be provided on the pressure block 23. The first trigger piece 253 is used to trigger the first sensor 251, and the second trigger piece 254 is used to trigger the second sensor 252. The first sensor 251 and the second sensor 252 can both be photoelectric sensors.

[0083] Optionally, the first sensor 251 is fixed to one of the side plates 223, the second sensor 252 is fixed to the other side plate 223, and a trigger structure is fixed to the pressing block 23. A first trigger piece 253 and a second trigger piece 254 are respectively provided on opposite sides of the trigger structure. The trigger structure can be fixedly connected to the pressing block 23 or integrally formed.

[0084] In one embodiment of the present invention, see Figure 10 and Figure 11The flow regulating valve 2 includes a second linear drive mechanism 261, a plug 262, a pipe 263 and a sealing structure 264. The second linear drive mechanism 261 can output linear motion, and the plug 262 is driven by the second linear drive mechanism 261 and can perform linear reciprocating motion. The pipe 263 is provided with an insertion port 2630, and the plug 262 can pass through the insertion port 2630 to enter the interior of the pipe 263. When the plug 262 is not inserted into the interior of the pipe 263, the channel in the pipe 263 is not blocked, and the flow regulating valve is fully open; the longer the plug 262 is inserted, the smaller the channel of the pipe 263, and the smaller the flow of the pipe 263. After the plug 262 is fully inserted into the pipe 263, the channel of the pipe 263 can be blocked and the flow regulating valve is closed. A pressure relief passage is defined between the outer wall of plug 262 and the inner wall of inlet 2630. Plug 262 is positioned within sealing structure 264, with a first end of plug 262 fixedly connected to sealing structure 264. The other end of sealing structure 264 is fixed to the periphery of inlet 2630. Sealing structure 264 can expand or contract, for example, by stretching or compressing. One end of sealing structure 264 is sealed to plug 262, and moves with the movement of plug 262, thereby stretching or compressing. A sealed cavity 2643 is formed between sealing structure 264 and plug 262, communicating with the interior of pipe 263. Consequently, when plug 262 moves at high frequencies, the pressure within pipe 263 increases. When the pressure in pipe 263 is excessive, fluid can enter sealed cavity 2643 through the gap between plug 262 and inlet 2630, preventing leakage. The fluid can be a gas, liquid, or other liquid.

[0085] In one embodiment of the present invention, see Figure 11 The plug 262 and the inlet 2630 are sealed together, and a pressure relief groove 26220 is provided on the outer peripheral wall of the plug 262. The liquid in the pipe 263 can only flow out of the pressure relief groove 26220 to the sealed cavity 2643. When the pressure in the pipe 263 is too high, the fluid in the pipe 263 can enter the sealed cavity 2643 through the pressure relief groove 26220, thereby alleviating the pressure in the pipe 263, avoiding excessive impact on the plug 262, and preventing fluid leakage. The pressure relief groove 26220 can be extended to one end of the plug 262 for inserting into the pipe 263, so that when this end of the plug 262 is close to the inlet 2630, it will not be completely blocked by the inner wall of the inlet 2630, and the liquid can still enter the sealed cavity 2643 through the pressure relief groove 26220.

[0086] Optionally, see Figure 12The pressure relief groove 26220 is in the shape of a straight strip, and its length is in the same direction as the movement direction of the plug 262. That is, the pressure relief groove 26220 extends along the movement direction of the plug 262. There are multiple pressure relief grooves 26220, which are sequentially spaced around the circumference of the plug 262. In this embodiment, the plug 262 can be cylindrical, elliptical, or elongated.

[0087] Optionally, the pressure relief groove 26220 extends in a spiral shape and is spirally arranged on the outer peripheral wall of the plug 262. Accordingly, the plug 262 is cylindrical with a circular cross section. There can be multiple pressure relief grooves 26220, and adjacent pressure relief grooves 26220 are arranged at intervals.

[0088] In one embodiment of the present invention, see Figure 11 A seal 265 is provided around the inlet 2630. When the plug 262 is inserted into the pipe 263 to completely block the pipe 263, the seal 265 cooperates with the plug 262 to completely seal the inlet 2630 of the pipe 263, placing the flow control valve in a closed state. An annular groove may be provided around the inlet 2630 to accommodate the seal 265. The seal 265 faces the interior of the sealing cavity 2643 and can be pressed against the stop step 2623 described below.

[0089] Specifically, see Figure 11 and Figure 12 Plug 262 includes a connecting section 2621 and a sealing section 2622. One end of connecting section 2621 is fixedly connected to sealing structure 264, and the other end of connecting section 2621 is fixedly connected to sealing section 2622. Sealing section 2622 is configured to extend into pipe 263. A stop step 2623 is formed at the junction of connecting section 2621 and sealing section 2622. When stop step 2623 of plug 262 moves close to insertion port 2630, it squeezes seal 265, sealing pipe 263 at insertion port 2630. Moreover, the pressure relief groove 26220 is set in the sealing section 2622. When the stop step 2623 squeezes the seal 265, the pressure relief groove 26220 is completely located in the pipe 263, and the pressure relief groove 26220 cannot be connected to the sealing cavity 2643, that is, the pipe 263 is completely sealed at the extension port 2630, so that the flow regulating valve is closed.

[0090] The cross-sectional area of the connecting section 2621 is greater than the cross-sectional area of the blocking section 2622. When the cross-sectional area of the plug 262 is circular, the diameter of the connecting section 2621 is greater than the diameter of the blocking section 2622; when the cross-sectional area of the plug 262 is square, the side length of the connecting section 2621 is greater than the side length of the blocking section 2622.

[0091] Optionally, the stop step 2623 is tilted relative to the cross section of the plug 262. Firstly, the stop step 2623 can be easier to process. Secondly, the plug 262 has a longer buffer stroke after contacting the seal 265, which can avoid excessive extrusion of the seal 265.

[0092] In another embodiment of the present invention, there is a gap between the outer peripheral wall of the plug 262 and the inner peripheral wall of the extension port 2630. The gap is a pressure relief channel. The pressure relief channel is used to connect the pipeline 263 and the sealing cavity 2643. The fluid in the pipeline 263 can enter the sealing cavity 2643 through the pressure relief channel.

[0093] In one embodiment of the present invention, see Figure 11 A sealing gasket 266 is provided on the pipe 263 opposite the inlet 2630. After the plug 262 is completely inserted into the pipe 263, the end of the plug 262 contacts and squeezes the sealing gasket 266, thereby completely closing the fluid passage in the pipe 263. The pipe 263 may have a receiving groove at the sealing gasket 266, and the sealing gasket 266 is disposed in the receiving groove.

[0094] Alternatively, a sealing gasket 266 is provided at one end of the plug 262 that is used to extend into the pipe 263. After the plug 262 completely enters the pipe 263, the inner walls of the plug 262 and the pipe 263 squeeze the sealing gasket 266 against each other, thereby completely closing the fluid channel in the pipe 263.

[0095] In one embodiment of the present invention, see Figure 11 The sealing structure 264 includes a folding cylinder 2641 and an end plate 2642. The end plate 2642 is connected to one end of the folding cylinder 2641. One end of the folding cylinder 2641 is blocked by the end plate 2642. The other end of the folding cylinder 2641 is open. The open end of the folding cylinder 2641 is fixed to the circumference of the inlet 2630. The folding cylinder 2641 can be folded or unfolded. When the folding cylinder 2641 is folded, it is in a contracted state. When the folding cylinder 2641 is unfolded, it is in a stretched state. The setting of the folding cylinder 2641 allows the sealing structure 264 to contract or stretch with the movement of the plug 262. One end of the plug 262 is fixed to the end plate 2642, and the other end of the plug 262 extends into the interior of the pipe 263.

[0096] In other embodiments, the sealing structure 264 may also be a structure that can expand or contract, such as a balloon.

[0097] In one embodiment of the present invention, see Figure 10 and Figure 11The second linear drive mechanism 261 includes a second motor 2611, a second screw rod 2612, a second nut seat 2613 and a second guide rod 2614. The second motor 2611 can output rotational motion, and the second screw rod 2612 is connected to the rotational motion end of the second motor 2611, and the second motor 2611 can drive the second screw rod 2612 to rotate. The second nut seat 2613 is threadedly connected to the second screw rod 2612, and the second guide rod 2614 is inserted into the second nut seat 2613, and the second guide rod 2614 and the second screw rod 2612 are parallel to each other. When the second screw rod 2612 rotates, the second nut seat 2613 moves along the length direction of the second screw rod 2612. Under the guidance of the second guide rod 2614, the second nut seat 2613 can be prevented from circumferential rotation and the second nut seat 2613 can be guaranteed to move linearly smoothly. The plug 262 is fixedly connected to the second nut seat 2613. When the second nut seat 2613 moves horizontally, the plug 262 also moves synchronously. Therefore, when the second motor 2611 is working, the plug 262 can reciprocate along the length direction of the second screw rod 2612.

[0098] The number of second guide rods 2614 can be multiple, and the number of guide holes in the second nut seat 2613 is the same as the number of second guide rods 2614. The second guide rods 2614 are installed through the corresponding guide holes. The second guide rods 2614 are arranged around the second screw rod 2612. For example, there are two second guide rods 2614, one on each side of the second screw rod 2612; or there are four second guide rods 2614, circumferentially arranged around the second screw rod 2612.

[0099] Optionally, the end plate 2642 of the sealing structure 264 is sandwiched between the second nut seat 2613 and the plug 262, and the second nut seat 2613 and the plug 262 can be fixedly connected by fixing members such as screws.

[0100] In other embodiments of the present invention, the second linear drive mechanism 261 is a mechanism capable of outputting linear motion, such as a linear motor, a pneumatic cylinder, or a hydraulic cylinder. Alternatively, the second linear drive mechanism 261 includes a second motor 2611 that outputs rotational motion, a gear, and a rack. The gear is connected to the moving end of the second motor 2611, the rack and the gear mesh with each other, and the plug 262 is connected to the rack. In this way, when the second motor 2611 is operating, it can also drive the plug 262 to move linearly.

[0101] In one embodiment of the present invention, the flow control valve 2 further includes a second fixed seat 267, and the second linear drive mechanism 261 and the pipeline 263 are both arranged on the second fixed seat 267. The second fixed seat 267 is also provided with a third sensor 2681 and a fourth sensor 2682, which are respectively arranged at the two ends of the travel of the plug 262 to detect whether the plug 262 has reached the first limit position and the second limit position. Specifically, in combination with Figure 2 The first limit position is the highest point of plug 262. When plug 262 is in the first limit position, the passage of pipe 263 is fully open. The second limit position is the lowest point of plug 262. When plug 262 is in the second limit position, the passage of pipe 263 is completely closed. A third triggering piece 2683 and a fourth triggering piece 2684 may be provided on second nut seat 2613. The third triggering piece 2683 is used to trigger the third sensor 2681, and the fourth triggering piece 2684 is used to trigger the fourth sensor 2682. Both third sensor 2681 and fourth sensor 2682 may be photoelectric sensors.

[0102] The present invention also provides a fitness device, which includes the damping mechanism 100 in any of the above embodiments. Figure 13 The fitness equipment further includes a first rod 200 and a second rod 300 . The first rod 200 is connected to the first connecting member 31 , and the second rod 300 is connected to the second connecting member 32 .

[0103] The fitness equipment provided by the present invention utilizes the aforementioned damping mechanism 100. The damping mechanism 100 includes two fluid-driven structures 1, a flow control valve 2, and a first connecting member 31 and a second connecting member 32 that are movable relative to each other. The flow control valve 2 is connected via the two fluid-driven structures 1. The first connecting member 31 is fixedly connected to the flow control valve 2, and the second connecting member 32 is fixedly connected to the fixed ends of the two fluid-driven structures 2. When the first connecting member 31 and the second connecting member 32 move relative to each other, one fluid-driven structure 1 is compressed and the other fluid-driven structure 1 is stretched. The fluid in the first fluid-driven structure 1 flows through the flow control valve 2 into the second fluid-driven structure 1, thereby forming the damping mechanism 100. This damping mechanism 100 does not undergo irreversible structural deformation like a spring and has a longer service life.

[0104] In one embodiment of the present invention, see Figure 13The fitness equipment further includes a handle structure 400, which is connected to the first rod 200 and / or the second rod 300. In other words, the handle structure 400 is connected to the end of the first rod 200 or the second rod 300 that is away from the damping mechanism 100, or the handle structure 400 is connected to the end of both the first rod 200 and the second rod 300 that is away from the damping mechanism 100. The provision of the handle structure 400 makes it easier for fitness enthusiasts to hold the device, improving hand comfort during exercise.

[0105] In one embodiment of the present invention, see Figures 14 to 16 The handle structure 400 includes a handle body 41 and a first rotating connector 42. The handle body 41 and the first rotating connector 42 are rotatably connected. The first rotating connector 42 is used to connect to the first rod 200 and / or the second rod 300. The following description uses the connection between the first rotating connector 42 and the first rod 200 as an example. In this way, the handle structure 400 can rotate relative to the first rod 200. When the arm posture changes, the handle structure 400 can rotate accordingly relative to the first rod 200, making the arm exertion more comfortable and avoiding wrist exertion.

[0106] The handle body 41 includes a grip portion 411 and a second rotating connector 412. The first rotating connector 42 is rotatably connected to the second rotating connector 412. The first rotating connector 42 has a first abutting surface 421 and a second abutting surface 422. The second rotating connector 412 has a third abutting surface 41211 and a fourth abutting surface 41212. The first abutting surface 421 is configured to abut against the third abutting surface 41211, and the second abutting surface 422 is configured to abut against the fourth abutting surface 41212. The angle between the first abutting surface 421 and the second abutting surface 422 is greater than the angle between the third abutting surface 41211 and the fourth abutting surface 41212. Thus, when the first abutting surface 421 and the third abutting surface 41211 abut each other, the second abutting surface 422 and the fourth abutting surface 41212 form an angle therebetween. Similarly, when the second abutting surface 422 and the fourth abutting surface 41212 abut each other, the first abutting surface 421 and the third abutting surface 41211 form an angle therebetween. In this way, the handle body 41 and the first rotating connector 42 can rotate relative to each other, and the first abutting surface 421 and the second abutting surface 422 on the first rotating connector 42 respectively abut against the handle body 41, limiting the rotation angle of the handle body 41. When exerting force on the arm, the handle body 41 can be adjusted to a more suitable position, allowing the wrist to be stretched as far as possible.

[0107] In one embodiment of the present invention, see Figure 15 and Figure 16The third abutting surface 41211 and the fourth abutting surface 41212 are connected by a transition surface 41213. That is, the third abutting surface 41211, the transition surface 41213, and the fourth abutting surface 41212 are sequentially connected. The provision of the transition surface 41213 can avoid forming a sharp angle between the third abutting surface 41211 and the fourth abutting surface 41212, thereby preventing excessive wear on the contact surface between the first rotating connector 42 and the second rotating connector 412. The transition surface 41213 can be an arcuate surface, such as a circular arc or a smoothly connected arc formed by multiple circular arc segments. The transition surface 41213 can also be a flat surface. The transition surface 41213 can also be a combination of a flat surface and an arcuate surface. For example, the transition surface 41213 can be a sequentially connected arcuate surface, a flat surface, and another arcuate surface, thereby smoothly connecting the third abutting surface 41211 and the fourth abutting surface 41212. The transition surface 41213 can also be a plurality of sequentially connected flat surfaces.

[0108] In one embodiment of the present invention, the angle between the first abutting surface 421 and the second abutting surface 422 is 70° to 110°, and the angle between the third abutting surface 41211 and the fourth abutting surface 41212 is 30° to 80°. Optionally, the angle between the first abutting surface 421 and the second abutting surface 422 is 90±10°, and the angle between the third abutting surface 41211 and the fourth abutting surface 41212 is 60±10°, so that the second rotating connector 412 has a rotation range of at least 10° to 50° relative to the first rotating connector 42, and the handle body 41 has a certain adjustment space.

[0109] In one embodiment of the present invention, see Figure 14 and Figure 15 The first and second rotating connectors 42 and 412 rotate at the same axis, and the axis is perpendicular to the length of the grip 411. It should be noted that when a hand is gripping the grip 411, the direction perpendicular to the four fingers is the length of the grip 411. This way, when the handle body 41 rotates relative to the first rotating connector 42, it compensates for wrist rotation, allowing the arm and hand to remain aligned as much as possible without requiring wrist force.

[0110] In one embodiment of the present invention, see Figure 15, the outer wall of the first rotating connector 42 has a step structure 420. It can also be considered that the outer wall of the first rotating connector 42 is cut out of the material of the L-shaped structure to form the above-mentioned step structure 420. The step structure 420 has an intersecting bottom surface and side surface, the bottom surface is a first abutting surface 421, and the side surface is a second abutting surface 422. The angle between the first abutting surface 421 and the second abutting surface 422 can be 90°, or close to 90°. By providing the step structure 420 on the outer wall of the first rotating connector 42, the first abutting surface 421 and the second abutting surface 422 can be formed, so that the structure of the first rotating connector 42 is relatively simple and convenient for processing and forming.

[0111] In one embodiment of the present invention, see Figure 15 and Figure 16 The second rotating connector 412 has an L-shaped accommodating space 4120, and the first rotating connector 42 is located within the L-shaped accommodating space 4120, making the handle structure 400 thinner and more compact. The inner wall of the L-shaped accommodating space 4120 is directly opposite the first abutting surface 421 and the second abutting surface 422. The inner wall of the L-shaped accommodating space 4120 includes a third abutting surface 41211 and a fourth abutting surface 41212, so that the first abutting surface 421 can abut against the third abutting surface 41211, and the second abutting surface 422 can abut against the fourth abutting surface 41212.

[0112] In one embodiment of the present invention, see Figure 16 The second rotating connector 412 includes a handle connecting portion 4121 and a rotating shaft connecting portion 4122. One end of the handle connecting portion 4121 is fixedly connected to the grip portion 411, and the other end of the handle connecting portion 4121 has a third abutting surface 41211 and a fourth abutting surface 41212. The third abutting surface 41211 can be an end wall of the handle connecting portion 4121, and the fourth abutting surface 41212 can be a side wall near the end of the handle connecting portion 4121. The side wall of the rotating shaft connecting portion 4122 is connected to the side wall of the handle connecting portion 4121. The end wall of the handle connecting portion 4121 away from the grip portion 411 and the side wall of the rotating shaft connecting portion 4122 form the aforementioned L-shaped accommodating space 4120.

[0113] The hand grip portion 411 , the handle connection portion 4121 and the shaft connection portion 4122 may be integrally formed.

[0114] In one embodiment of the present invention, see Figure 15The handle structure 400 further includes a rotational fixing member 43, which is used to connect the first rotational connecting member 42 and the rotation axis connecting portion 4122, thereby rotatably connecting the handle body 41 to the first rotational connecting member 42. The rotational fixing member 43 can be a structure such as a pin. Specifically, a first shaft hole 423 is defined in the first rotational connecting member 42, and a second shaft hole 41220 is defined at the end of the rotation axis connecting portion 4122 away from the handle connecting portion 4121. The first shaft hole 423 and the second shaft hole 41220 are directly opposite each other. The rotational fixing member 43 passes through the first shaft hole 423 and the second shaft hole 41220, thereby achieving a rotational connection between the handle body 41 and the first rotational connecting member 42.

[0115] In one embodiment of the present invention, see Figure 17 and Figure 18 The fitness device further includes a fitness base structure 500, which is detachably connected to the first rod 200 and / or the second rod 300. For ease of description, the fitness base structure 500 is configured to be detachably connected to the first rod 200, thereby making the fitness device more versatile and extending its applicability.

[0116] See also Figure 17 , a damping mechanism 200 is installed on the fitness base structure 500. Figure 18 , two damping mechanisms 200 are installed on the fitness base structure 500. Correspondingly, the number of the first rod 200 and the second rod 300 is also two, and the two first rods 200 are respectively connected to different connecting rod structures of the same or identical fitness base structure 500. The ends of the two second rods 300 away from the damping mechanism 100 are connected to each other through a connecting shaft 600. When exercising, fitness enthusiasts can hold the connecting shaft 600 with both hands to rotate the second rod 300 relative to the first rod 200 to achieve the purpose of fitness. Figure 18 In the embodiment, one of the damping mechanisms 100 can be disassembled, and the corresponding first rod 200 and second rod 300 can also be disassembled, and a handle 500 can be installed to form Figure 17 Therefore, by designing the fitness base structure 500 into the above structure, the use of the fitness equipment can be more diversified.

[0117] See also Figures 19 to 21The fitness base structure 500 includes a base 51, an elastic member 53, a movable rod 52 and a fixed rod 54. The movable rod 52 can move relative to the base 51, and the fixed rod 54 is fixedly connected to the base 51. The two ends of the elastic member 53 are respectively abutted against the base 51 and the movable rod 52. Under the elastic force of the elastic member 53, one end of the movable rod 52 abuts against one end of the fixed rod 54. The movable rod 52 and the fixed rod 54 form a connecting rod structure, which is used to be detachably connected to the first connecting rod 200. Specifically, the first connecting rod 200 can be sleeved on the movable rod 52, the first connecting rod 200 can be sleeved on the fixed rod 54, or the first connecting rod 200 can be partially sleeved on the movable rod 52 and partially sleeved on the fixed rod 54.

[0118] When installing the first connecting rod 200, the movable rod 52 is moved, the elastic member 53 is gradually compressed, and the movable rod 52 gradually separates from the fixed rod 54. The collar on the first connecting rod 200 is placed on the fixed rod 54 or the movable rod 52. The movable rod 52 is then released. Under the restoring force of the elastic member 53, the movable rod 52 returns to contact with the fixed rod 54, stably securing the first connecting rod 200 on the connecting rod structure. When removing the first connecting rod 200, the movable rod 52 is moved, the elastic member 53 is gradually compressed, and the movable rod 52 gradually separates from the fixed rod 54. The first connecting rod 200 is then removed from the fixed rod 54 or the movable rod 52. The movable rod 52 is released. Under the restoring force of the elastic member 53, the movable rod 52 returns to contact with the fixed rod 54. In this manner, the fitness base structure 500 of this embodiment makes installation, removal, and replacement of equipment very convenient.

[0119] In one embodiment of the present invention, one of the movable rod 52 and the fixed rod 54 is a hollow rod, and the other of the movable rod 52 and the fixed rod 54 is inserted into the hollow rod. In this way, the movable rod 52 and the fixed rod 54 are circumferentially positioned relative to each other, preventing the connecting rod structure from shaking and enhancing the bending moment resistance of the connecting rod structure. Specifically, the movable rod 52 is a hollow rod, and the end of the movable rod 52 facing the fixed rod 54 is open. When no external force acts on the movable rod 52, the fixed rod 54 is inserted into the interior of the movable rod 52 and abuts against the inner wall of the movable rod 52. Alternatively, the fixed rod 54 is a hollow rod, and the end of the fixed rod 54 facing the movable rod 52 is open. When no external force acts on the movable rod 52, the movable rod 52 is inserted into the interior of the fixed rod 54 and abuts against the inner wall of the fixed rod 54.

[0120] In one embodiment of the present invention, see Figure 20The base 51 includes a base plate 511 and a cover plate 512. The cover plate 512 is fixed to the base plate 511. The cover plate 512 and the base plate 511 are detachably connected or fixedly connected. One end of the fixed rod 54 and one end of the movable rod 52 are both located inside the cover plate 512. The end of the fixed rod 54 can be fixed to the base plate 511 or the cover plate 512. The movable rod 52 is inserted through the cover plate 512 and can slide relative to the cover plate 512. The other end of the fixed rod 54 (exposed on the cover plate 512) and the other end of the movable rod 52 (exposed on the cover plate 512) are arranged opposite each other. When the movable rod 52 is not subjected to external force, the two abut against each other.

[0121] Optionally, see Figure 22 The cover plate 512 has a first hollow hole 5121 formed therein, and a first avoidance hole 5123 and a second avoidance hole 5124 formed in the wall of the first hollow hole 5121. The first avoidance hole 5123 and the second avoidance hole 5124 are directly opposite each other. One end of the movable rod 52 is located inside the cover plate 512, and the other end of the movable rod 52 passes through the first avoidance hole 5123 to the first hollow hole 5121. One end of the fixed rod 54 is located inside the cover plate 512, and the other end of the fixed rod 54 passes through the second avoidance hole 5124 to the first hollow hole 5121. The fixed rod 54 and the movable rod 52 abut against each other in the space enclosed by the first hollow hole 5121. By opening a first hollow hole 5121 on the cover plate 512, the movable rod 52 and the fixed rod 54 can be fixed or positioned in the cover plate 512, and can also abut against each other within the range of the first hollow hole 5121, without the need to design fixing structures separately for the movable rod 52 and the fixed rod 54.

[0122] Optionally, the cover plate 512 is annular in shape, and the first hollow hole 5121 is the annular inner hole of the cover plate 512 .

[0123] In one embodiment of the present invention, see Figure 20 The movable rod 52 has a positioning step 521 at one end located inside the cover plate 512. The positioning step 521 is used to abut against the inner wall of the cover plate 512. Specifically, the inner wall of the cover plate 512 at the first avoidance hole 5123 abuts against the positioning step 521, preventing the movable rod 52 from falling off the cover plate 512 and providing an axial limit for the movable rod 52.

[0124] The cover plate 512 has a first accommodating cavity 5125 for accommodating the movable rod 52. One end of the first accommodating cavity 5125 forms a first avoidance hole 5123, through which the movable rod 52 passes. The inner wall of the first accommodating cavity 5125 guides and positions the movable rod 52. The cover plate 512 also has a second accommodating cavity 5126 for accommodating the fixed rod 54. One end of the second accommodating cavity 5126 forms a second avoidance hole 5124, through which one end of the fixed rod 54 passes. The other end of the fixed rod 54 can pass through the cover plate 512 and be fixedly connected to the base plate 511.

[0125] In one embodiment of the present invention, see Figure 19 and Figure 20 The fitness base structure 500 also includes a paddle 55, which is fixedly connected to the movable rod 52. The paddle 55 facilitates manual control of the movable rod 52. The surface of the paddle 55 can be provided with patterns, anti-slip grooves, or other structures to facilitate the movement of the paddle 55. The paddle 55 is disposed on the side of the cover plate 512 facing away from the base plate 511, that is, the paddle 55 is disposed on the outside of the cover plate 512, facilitating manual control.

[0126] Optionally, one end of the first accommodating cavity 5125 is a first avoidance hole 5123 that passes through the cover plate 512. The side of the first accommodating cavity 5125 is hollowed out to facilitate the fixed connection between the paddle 55 and the movable rod 52. Specifically, the paddle 55 and the movable rod 52 can be fixedly connected by a fixing member such as a screw.

[0127] In one embodiment of the present invention, see Figure 22 A guide groove 5122 is defined on the side of the cover plate 512 facing away from the base plate 511. The guide groove 5122 is configured to accommodate the paddle 55 and guide the paddle 55 during its movement. Since the paddle 55 is fixedly connected to the movable rod 52, the paddle 55 and the movable rod 52 move in the same direction, and the length of the guide groove 5122 is also aligned with the direction of movement of the movable rod 52.

[0128] In one embodiment of the present invention, see Figure 20 The base plate 511 is provided with a second hollow hole 5110. The second hollow hole 5110 and the first hollow hole 5121 are directly opposite each other, leaving the center of the base 51 hollow. This allows for the installation of equipment, even if the connection between the equipment and the connecting rod is large, to prevent collision with the base plate 511, thus leaving ample space for equipment installation. The first hollow hole 5121 and the second hollow hole 5110 can be identical in size and shape.

[0129] In one embodiment of the present invention, see Figure 20 and Figure 21A guide rod 56 is fixed on the base 51, and one end of the guide rod 56 is fixed to the base 51. When the base 51 includes a base plate 511 and a cover plate 512, one end of the guide rod 56 can be fixed to the base plate 511 or the cover plate 512. The elastic member 53 is sleeved on the guide rod 56, and the first end of the elastic member 53 abuts on the stop step of the base 51 or the guide rod 56, and the second end of the elastic member 53 abuts on the movable rod 52. The setting of the guide rod 56 has a positioning and guiding effect on the elastic member 53, so that the elastic member 53 can only deform along its extension direction, preventing it from bending and jumping in other directions. The elastic member 53 can be a spring. Among them, the guide rod 56 can pass through the cover plate 512 and extend into the first accommodating cavity 5125 of the cover plate 512, so that part of the guide rod 56 and part of the movable rod 52 are both located in the first accommodating cavity 5125.

[0130] Optionally, the movable rod 52 is cylindrical, and the elastic member 53 and the guide rod 56 are both inserted into the interior of the movable rod 52, so that when the elastic member 53 is extended or retracted, the movement of the movable rod 52 is more stable.

[0131] In other embodiments, a guide hole is opened on the base 51, one end of the elastic member 53 abuts against the inner wall of the guide hole, and the elastic member 53 is located in the guide hole. The inner wall of the guide hole can also position and guide the elastic member 53.

[0132] Optionally, the number of the base plate 511 is one, and the number of the cover plate 512, the elastic member 53, the movable rod 52 and the fixed rod 54 is multiple, so that the fitness base structure 500 has multiple connecting rod structures, and each connecting rod structure can be detachably installed with corresponding equipment.

[0133] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Damping mechanism, characterized by: The invention comprises two fluid drive structures, a flow regulating valve, and a first connecting member and a second connecting member that can move relative to each other. One end of the two fluid drive structures is connected through the flow regulating valve, the first connecting member is fixedly connected to the flow regulating valve, and the second connecting member is fixedly connected to the fixed ends of the two fluid drive structures. When the first connecting member and the second connecting member move relative to each other, one of the fluid drive structures is compressed and the other fluid drive structure is stretched, and the damping between the first connecting member and the second connecting member is adjusted by the flow regulating valve; the two fluid drive structures and the flow regulating valve are arranged in a ring, and the first connecting member moves circumferentially about the center of the ring; the fluid drive structure comprises a plurality of telescopic units connected in sequence, and two adjacent telescopic units are connected by a support structure; the damping mechanism also comprises a support shaft and a connecting rod, the support shaft is arranged at the center of the ring formed by the fluid drive structure and the flow regulating valve, one end of the connecting rod is fixed to the support structure, and the other end of the connecting rod is sleeved on the support shaft.

2. The damping mechanism according to claim 1, wherein: One end of the regulating valve extends to be sleeved on the supporting shaft, and the other end of the regulating valve is fixed with the first connecting member.

3. The damping mechanism according to claim 1, wherein: The flow regulating valve includes a first linear drive mechanism, a pressure block, a hose for fluid to pass through, and a first fixed seat. The first linear drive mechanism outputs linear motion. The pressure block is fixed to the moving end of the first linear drive mechanism, and the pressure block is used to squeeze the hose to change the area of the cross-section of the channel in the hose. The hose is arranged between the first fixed seat and the pressure block.

4. The damping mechanism according to claim 3, wherein: The cross section of the hose is elliptical, and the short axis of the ellipse is arranged parallel to the moving direction of the pressing block.

5. The damping mechanism according to claim 4, wherein: An inner wall of the hose has an edge at the intersection with the major axis of the ellipse, and the hose has the largest wall thickness at the edge.

6. The damping mechanism according to claim 1, wherein: The flow regulating valve includes a second linear drive mechanism, a plug driven by the second linear drive mechanism, a pipe for fluid to pass through, and a sealing structure with a variable volume. The pipe is provided with an insertion port for the plug to be inserted into. One end of the sealing structure is sealed with the plug, and the other end of the sealing structure is fixed to the circumference of the insertion port. The plug is arranged inside the sealing structure, and a sealed cavity is formed between the sealing structure and the plug.

7. The damping mechanism according to claim 6, wherein: The sealing structure includes a folding cylinder that can be folded and unfolded and an end plate connected to one end of the folding cylinder. One end of the plug is fixed to the end plate, and the other end of the plug is used to extend into the pipeline. The end of the folding cylinder away from the end plate is sealed and connected to the circumference of the insertion port.

8. The damping mechanism according to claim 6, wherein: The plug is sealed to the inlet, and a pressure relief groove is provided on the outer peripheral wall of the plug, and the pressure relief groove is used to connect the pipeline and the sealing cavity.

9. The damping mechanism according to claim 8, wherein: A seal is provided around the extension port, the plug includes a connecting section and a sealing section for extending into the pipeline, the pressure relief groove is provided in the sealing section, and a stop step is formed at the connection between the connecting section and the sealing section, and the stop step is used to press the seal.

10. Fitness equipment, characterized in that: The damping mechanism comprises the damping mechanism according to any one of claims 1 to 9, further comprising a first rod and a second rod, wherein the first rod is connected to the first connecting member, and the second rod is connected to the second connecting member.

11. The fitness equipment according to claim 10, wherein: The fitness equipment also includes a handle structure, which includes a handle body and a first rotating connection member for connecting to the first rod and / or the second rod, the handle body includes a grip portion and a second rotating connection member fixedly connected to the grip portion, the first rotating connection member and the second rotating connection member are rotatably connected, the first rotating connection member has a first abutment surface and a second abutment surface, the second rotating connection member has a third abutment surface and a fourth abutment surface, the angle between the first abutment surface and the second abutment surface is greater than the angle between the third abutment surface and the fourth abutment surface, so that when the first rotating connection member and the second rotating connection member rotate relative to each other, the third abutment surface and the first abutment surface abut each other, or the fourth abutment surface and the second abutment surface abut each other.

12. The fitness equipment according to claim 11, wherein: The third abutting surface and the fourth abutting surface are connected by a transition surface, and the transition surface is a curved surface, a plane, or a combination of a plane and a curved surface.

13. The fitness equipment according to claim 11, wherein: The outer wall of the first rotating connection member has a step structure, the bottom surface of the step structure is the first abutting surface, and the side surface of the step structure is the second abutting surface.

14. The fitness equipment according to claim 10, wherein: The fitness equipment also includes a fitness base structure, which includes a base, an elastic member, a movable rod and a fixed rod fixedly connected to the base. The two ends of the elastic member are respectively abutted against the base and the movable rod. Under the action of the elastic member, the movable rod abuts against the fixed rod to form a connecting rod structure. The connecting rod structure is used to be detachably connected to the first rod and / or the second rod. The telescopic direction of the elastic member is the same as the length direction of the connecting rod structure.

15. The fitness equipment according to claim 14, wherein: The base includes a substrate and a cover plate fixed on the substrate, the cover plate is provided with a first hollow hole, the hole wall of the first hollow hole is provided with a first avoidance hole and a second avoidance hole, the movable rod is arranged through the first avoidance hole, and the fixed rod is arranged through the second avoidance hole, so that the movable rod and the fixed rod are opposite to each other.

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