Damping mechanism and fitness equipment

Abstract

The application provides a damping mechanism and a fitness equipment. The damping mechanism comprises two fluid driving structures, a power push plate, a flow regulating valve, a transmission assembly, and a first connecting piece and a second connecting piece capable of relative movement. The power push plate is arranged between the two fluid driving structures. The two fluid driving structures are communicated through the flow regulating valve. The first connecting piece is connected to the power input end of the transmission assembly. The power push plate is connected to the power output end of the transmission assembly. The transmission assembly is used for outputting the rotary motion of the first connecting piece as the linear motion of the power push plate. When the power push plate moves, the fluid flows from one fluid driving structure to the other fluid driving structure through the flow regulating valve. The damping mechanism is simple, has a long service life, and will not cause irreversible structural deformation.

Description

Technical Field

[0001] This invention belongs to the field of fitness equipment technology, and more specifically, relates to a damping mechanism and fitness equipment. Background Technology

[0002] As living standards continue to improve, people are paying more and more attention to their health, especially white-collar workers in cities who spend long hours sitting in front of computers, which is very harmful to their health. In order to exercise and relieve problems such as shoulder and neck diseases and lumbar spine diseases, a variety of fitness equipment has gradually emerged.

[0003] Many current resistance bands, arm exercisers, sit-up machines, and fly machines contain damping mechanisms, which mostly employ damping shafts and springs. Damping shafts are prone to wear over long-term use, and their damping coefficient gradually decreases, resulting in a shorter lifespan. Springs and other structures are also susceptible to deformation, affecting the effectiveness of the workout. Summary of the Invention

[0004] The purpose of this invention is to provide a damping mechanism and fitness equipment to solve the technical problems of short service life or easy deformation of damping structures in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a damping mechanism is provided, comprising two fluid drive structures, a power push plate, a flow regulating valve, a transmission assembly, and a first connecting member and a second connecting member that can move relative to each other. The power push plate is provided between the two fluid drive structures, and the two fluid drive structures are connected through the flow regulating valve. The first connecting member is connected to the power input end of the transmission assembly, the power push plate is connected to the power output end of the transmission assembly, and the second connecting member is fixedly connected to the fixed ends of the two fluid drive structures. The transmission assembly is used to output the rotational motion of the first connecting member as the linear motion of the power push plate.

[0006] The present invention also provides a fitness device, including the damping mechanism described above, and further including 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 this invention are as follows: Compared with the prior art, the damping mechanism has two fluid-driven structures, with a power push plate spaced between them. A flow regulating valve connects the two fluid-driven structures. When the first connecting member rotates relative to the second connecting member, the transmission assembly can convert the rotational motion of the first connecting member into linear motion, thereby causing the power push plate to move. During the movement of the power push plate, fluid flows from one fluid-driven structure to the other through the flow regulating valve, causing one fluid-driven structure to increase in volume and the other to decrease. The damping mechanism in this fitness equipment has a longer service life and does not experience irreversible structural deformation like a spring. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

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

[0010] Figure 2 A cross-sectional view of a first damping mechanism provided in an embodiment of the present invention;

[0011] Figure 3 An exploded structural diagram of the first damping mechanism provided in an embodiment of the present invention;

[0012] Figure 4 A cross-sectional view of a first damping mechanism provided in an embodiment of the present invention;

[0013] Figure 5 A three-dimensional structural diagram of the first type of flow regulating valve provided in an embodiment of the present invention;

[0014] Figure 6 for Figure 5 Side view of a medium flow regulating valve;

[0015] Figure 7 for Figure 5 Partial structural diagram of a medium flow regulating valve (fixed base not shown);

[0016] Figure 8 A cross-sectional view of the hose provided in an embodiment of the present invention;

[0017] Figure 9 A three-dimensional structural diagram of a second type of flow regulating valve provided in an embodiment of the present invention;

[0018] Figure 10 for Figure 9 Cross-sectional view of a medium flow regulating valve;

[0019] Figure 11 A three-dimensional structural diagram of the plug provided in an embodiment of the present invention;

[0020] Figure 12 This is a front view of a third type of flow regulating valve provided in an embodiment of the present invention;

[0021] Figure 13 An exploded view of the third type of flow regulating valve provided in this embodiment of the invention;

[0022] Figure 14 for Figure 13 A three-dimensional structural diagram of a flow control valve (one of the clamps is not shown);

[0023] Figure 15 An exploded view of the fourth type of flow regulating valve provided in this embodiment of the invention;

[0024] Figure 16 for Figure 15 A three-dimensional structural diagram of a flow control valve (one of the clamps is not shown);

[0025] Figure 17 This is a three-dimensional structural diagram of a first type of fitness equipment provided in an embodiment of the present invention;

[0026] Figure 18 A three-dimensional structural diagram of the handle structure provided in an embodiment of the present invention;

[0027] Figure 19 An exploded view of the handle structure provided in an embodiment of the present invention;

[0028] Figure 20 A three-dimensional structural diagram of the handle body provided in an embodiment of the present invention;

[0029] Figure 21 This is a three-dimensional structural diagram of a second type of fitness equipment provided in an embodiment of the present invention;

[0030] Figure 22 This is a three-dimensional structural diagram of a third type of fitness equipment provided in an embodiment of the present invention;

[0031] Figure 23 This is a three-dimensional structural diagram of the fitness base plate structure provided in an embodiment of the present invention;

[0032] Figure 24 This is an exploded structural diagram of the fitness base plate structure provided in an embodiment of the present invention;

[0033] Figure 25 This is a cross-sectional view of the fitness base structure provided in an embodiment of the present invention;

[0034] Figure 26 This is a three-dimensional structural diagram of the cover plate provided in an embodiment of the present invention. Detailed Implementation

[0035] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] Please see Figures 1 to 3 The damping structure 100 includes two fluid-driven structures 1, a power push plate 32, a flow regulating valve 2, a transmission assembly 31, a first connecting member 33, and a second connecting member 34. The fluid-driven structure 1 has a receiving cavity for containing fluids such as gas and liquid. The fluid-driven structure 1 is stretched or compressed by the fluid; when fluid flows into the fluid-driven structure 1, its volume increases; when fluid flows out of the fluid-driven structure 1, its volume decreases.

[0037] A power push plate 32 is provided between the two fluid drive structures 1, meaning that one end of each fluid drive structure 1 is connected via the power push plate 32. A transmission assembly 31 converts rotational motion into linear motion. The power input end of the transmission assembly 31 is connected to the first connecting member 33, and the power output end of the transmission assembly 31 is connected to the power push plate 32. In other words, the transmission assembly 31 can convert the rotational motion of the first connecting member 33 into the linear motion of the power push plate 32. Furthermore, the two fluid drive structures 1 are connected via a flow regulating valve 2, allowing fluid to flow between the two fluid drive structures 1.

[0038] When the first connecting member 33 rotates relative to the second connecting member 34, the transmission assembly 31 causes the power push plate 32 to move, thereby increasing the volume of one fluid-driven structure 1 (in a stretched state) and decreasing the volume of the other fluid-driven structure 1 (in a compressed state). Specifically, when the power push plate 32 moves towards the first fluid-driven structure 1, the fluid in the first fluid-driven structure 1 moves to the second fluid-driven structure 1 through the flow regulating valve 2. This causes the first fluid-driven structure 1 to decrease in volume (compressed) and the second fluid-driven structure 1 to increase in volume (stretched). Similarly, when the power push plate 32 moves towards the second fluid-driven structure 1, the fluid in the second fluid-driven structure 1 moves to the first fluid-driven structure 1 through the flow regulating valve 2. This causes the second fluid-driven structure 1 to decrease in volume (compressed) and the first fluid-driven structure 1 to increase in volume (stretched). By changing the channel size of the flow regulating valve 2, the force required to drive the first connecting member 33 can be adjusted. By manually rotating the first connecting member 33, the fluid in one fluid-driven structure 1 enters the other fluid-driven structure 1, requiring work to be done to overcome fluid resistance, thus achieving a training effect.

[0039] The damping structure 100 in the above embodiment has two fluid drive structures 1, with a power push plate 32 spaced between them. A flow regulating valve 2 connects the two fluid drive structures 1. When the first connecting member 33 rotates relative to the second connecting member 34, the transmission assembly 31 converts the rotational motion of the first connecting member 33 into linear motion, thereby moving the power push plate 32. During the movement of the power push plate 32, fluid within the fluid drive structures 1 flows from one fluid drive structure 1 to the other through the flow regulating valve 2, causing one fluid drive structure 1 to increase in volume and the other to decrease. Fitness enthusiasts can overcome fluid resistance by moving the first connecting member 33 and the second connecting member 34 relative to each other, thus achieving their fitness goals. This damping structure 100 has a long service life and does not exhibit irreversible structural deformation like a spring.

[0040] In one embodiment of the present invention, please refer to Figure 2 The transmission assembly 31 includes a transmission screw 311 and a threaded sleeve 312. The threaded sleeve 312 is threadedly connected to the transmission screw 311. The transmission screw 311 is the power input end of the transmission assembly 31, and the threaded sleeve 312 is the power output end of the transmission assembly 31. Specifically, the first connecting member 33 is fixedly connected to the transmission screw 311. When the first connecting member 33 rotates, it drives the transmission screw 311 to rotate synchronously. The rotation of the transmission screw 311 causes the threaded sleeve 312 to move linearly. The threaded sleeve 312 is fixedly connected to the power push plate 32, and the power push plate 32 also moves linearly with the threaded sleeve 312. Thus, when the exerciser moves the first connecting member 33, the power push plate 32 moves linearly, one of the fluid-driven structures 1 is stretched, and the other fluid-driven structure 1 is compressed, requiring work to be done to overcome fluid resistance.

[0041] In other embodiments, the transmission assembly 31 includes a lead screw 311, a threaded sleeve 312, and a gear set. The gear set has a transmission ratio greater than 1 or less than 1. The driving gear of the gear set is fixedly connected to the first connecting member 33, and the driven gear of the gear set is fixedly connected to the lead screw 311. By setting the gear set, the rotational speed ratio between the first connecting member 33 and the lead screw 311 can be changed.

[0042] In other embodiments, the transmission assembly 31 includes a gear and a rack. The gear is the power input end of the transmission assembly 31 and is fixedly connected to the first connecting member 33. The rack is the power output end of the transmission assembly 31 and is fixedly connected to the power push plate 32. When the first connecting member 33 drives the gear to rotate, the power push plate 32 can also move linearly.

[0043] In one embodiment of the present invention, please refer to Figure 2The fluid-driven structure 1 includes a first end plate 351, a second end plate, and a folding unit 11. The two ends of the folding unit 11 are respectively connected to the first end plate 351 and the second end plate. The first end plate 351, the second end plate, and the power push plate 32 can be arranged in parallel. When the volume of the fluid-driven structure 1 increases, the folding unit 11 gradually unfolds, and the distance between the first end plate 351 and the second end plate gradually increases. When the volume of the fluid-driven structure 1 decreases, the folding unit 11 gradually folds, and the distance between the first end plate 351 and the second end plate gradually decreases.

[0044] The second end plates of both fluid drive structures 1 are fixedly connected to the power push plate 32; in other words, the second end plates of the two fluid drive structures 1 can be considered as the power push plate 32. The two ends of the transmission screw 311 are rotatably supported on the two first end plates 351. Each of the two first end plates 351 is equipped with a bearing 3111, and the two ends of the transmission screw 311 are supported on the corresponding first end plate 351 by the two bearings 3111, allowing the transmission screw 311 to rotate smoothly.

[0045] In one embodiment of the present invention, please refer to Figure 2 In the same fluid-driven structure 1, there are two folding units 11, one of which is fitted around the periphery of the other. A cavity for containing fluid is located between the two folding units 11, and the two ends of the cavity are sealed by a first end plate 351 and a second end plate, respectively. That is, the first end plate 351, the second end plate, and the folding unit 11 enclose and form the cavity of the fluid-driven structure 1. In this embodiment, the transmission screw 311 can pass through the internal folding unit 11, which can fully utilize the space occupied by the folding unit 11, making the structure of the damping structure 100 more compact.

[0046] In other embodiments, in the same fluid drive structure 1, the number of folding units 11 is one, and the inner peripheral wall of the folding unit 11, the first end plate 351 and the second end plate enclose the receiving cavity of the fluid drive structure 1.

[0047] In other embodiments, please refer to Figure 4 The damping mechanism 100 also includes a housing structure 353, within which the fluid drive structure 1, transmission assembly 31, and other components are located. Within the same fluid drive structure 1, there is one folding unit 11. The outer peripheral wall of the folding unit 11, the first end plate 351, the second end plate, and the inner peripheral wall of the housing structure 353 enclose and form the receiving cavity of the fluid drive structure 1. To ensure the sealing of the cavity within the fluid drive structure 1, an O-ring 322 or similar sealing structure is provided between the outer peripheral wall of the second end plate (power push plate 32) and the inner peripheral wall of the housing structure 353, thereby ensuring the cavity is sealed.

[0048] In one embodiment of the present invention, please refer to Figure 2 The end of the folding unit 11 is fixed to the first end plate 351 and the second end plate via a pressure ring 321. The following description assumes that both second end plates are power push plates 32. One end of the folding unit 11 is sandwiched between the pressure ring 321 and the first end plate 351, and this end is fixedly connected to the first end plate 351 via a second connector 34 such as screws. The other end of the folding unit 11 is sandwiched between the power push plate 32 and the pressure ring 321, and this end is fixed to the power push plate 32 via a second connector 34 such as screws.

[0049] In other embodiments, the fluid drive structure 1 may also be a hydraulic cylinder.

[0050] In one embodiment of the present invention, when the first connecting member 33 moves relative to the second connecting member 34, the force required for their relative movement 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 33 moves relative to the second connecting member 34. If the pressure value detected by the pressure sensor increases, the flow regulating valve 2 is adjusted to increase its flow rate, thereby reducing the pressure generated when the first connecting member 33 and the second connecting member 34 move, returning to the set pressure value; if the pressure value detected by the pressure sensor decreases, the flow regulating valve 2 is adjusted to decrease its flow rate, thereby increasing the pressure generated when the first connecting member 33 and the second connecting member 34 move, returning to the set pressure value.

[0051] Optionally, the force required for the first connector 33 to generate relative motion with respect to the second connector 34 can be set to multiple adjustable levels, by setting multiple preset pressure values ​​for the pressure sensor.

[0052] Optionally, without external force, the first connector 33 and the second connector 34 will move relative to each other, causing the two fluid-driven structures 1 to gradually return to their initial state.

[0053] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 The damping structure 100 also includes a guide structure, which is used to guide the power push plate 32, making the movement of the power push plate 32 more stable and preventing it from tilting to one side during movement.

[0054] The guide structure includes a guide rod 361 and a guide sleeve 362. The two ends of the guide rod 361 are fixed to two first end plates 351, respectively. The guide rod 361 and the transmission screw 311 are parallel to each other. The guide sleeve 362 is fixedly connected to the power push plate 32. When the power push plate 32 moves, the guide sleeve 362 slides along the length of the guide rod 361, thus preventing the power push plate 32 from tilting to one side and ensuring its linear movement. The guide sleeve 362 can be integrally formed with the power push plate 32. The power push plate 32 has a guide hole for the guide rod 361 to pass through, thus forming the guide sleeve 362. Multiple guide structures can be arranged around the circumference of the folding unit 11 or around the circumference of the transmission screw 311. The specific layout and number of guide structures are not limited here.

[0055] In one embodiment of the present invention, the transmission lead screw 311 is hollow, which can reduce the weight of the damping structure 100, save raw materials, and reduce production costs. The transmission lead screw 311 can also be a solid structure.

[0056] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 The damping structure 100 also includes a housing 35, with the two fluid drive structures 1, the power push plate 32, and the transmission assembly 31 all disposed inside the housing 35. When the flow regulating valve 2 is connected to the fluid drive structure 1 through the aforementioned fluid pipe 201, the flow regulating valve 2 is disposed outside the housing 35, and the second connecting member 34 is also disposed outside the housing 35, and the second connecting member 34 is fixed. The flow regulating valve 2 and the second connecting member 34 can both be fixedly connected to the housing 35. When exercising, a person can hold the second connecting member 34 with one hand and the first connecting member 33 with the other hand, and achieve the exercise purpose by moving the first connecting member 33. The housing 35 may include two first end plates 351, and also includes a cylindrical portion 352, with the opposite ends of the cylindrical portion 352 fixedly connected to the two first end plates 351 respectively.

[0057] Optionally, the damping structure 100 includes a first U-shaped member 341, the flow regulating valve 2 and the second connecting member 34 are both fixed to the bottom of the first U-shaped member 341, and the top two ends of the first U-shaped member 341 are respectively fixed to two first end plates 351, so that the force on each part of the outer shell 35 is relatively balanced.

[0058] In one embodiment of the present invention, please refer to Figure 2 and Figure 3The damping structure 100 also includes a second U-shaped member 331. The bottom of the second U-shaped member 331 is fixedly connected to the first connecting member 33, and the top two ends of the second U-shaped member 331 are respectively fixedly connected to the two ends of the transmission screw 311. When the first connecting member 33 rotates, the transmission screw 311 rotates synchronously. The arrangement of the second U-shaped member 331 allows the first connecting member 33 to be fixedly connected to the two ends of the transmission screw 311, enabling the transmission screw 311 to rotate under the rotation of the first connecting member 33.

[0059] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 A fluid pipe 201 is connected to the side of the fluid-driven structure 1 away from the power push plate 32. That is, fluid pipes 201 are connected to both first end plates 351, allowing fluid within the two fluid-driven structures 1 to flow out through the fluid pipes 201. A flow regulating valve 2 is connected to the two fluid-driven structures 1 via fluid pipes 201; that is, both ends of the flow regulating valve 2 are connected to two fluid pipes 201, which are respectively connected to the receiving cavities of the two fluid-driven structures 1. In this way, fluid within one fluid-driven structure 1 can enter the other fluid-driven structure 1 through the flow regulating valve 2.

[0060] In one embodiment of the present invention, please refer to Figure 5 and Figure 6 The flow regulating 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 allows fluids such as gas and liquid to pass through; by controlling the size of the hose 24's passage, the flow rate can be adjusted. The first linear drive mechanism 21 outputs linear motion, and the pressure block 23 is fixed to the moving end of the first linear drive mechanism 21, enabling the pressure block 23 to perform linear motion. The first fixed seat 22 is fixedly installed, and the hose 24 is positioned between the pressure block 23 and the first fixed seat 22. The hose 24 is made of a relatively soft material and can deform under pressure. Its internal passage area also changes during deformation; when the hose 24 is compressed, the passage area decreases, and the amount of fluid passing through the flow regulating valve per unit time also decreases.

[0061] Specifically, combined Figure 5When it is necessary to reduce the flow rate of the flow regulating valve 2, the first linear drive mechanism 21 operates, causing the pressure block 23 to move downwards, compressing and deforming the hose 24, reducing the channel area within the hose 24, and decreasing the amount of fluid that can pass through the flow regulating valve 2 per unit time. When it is necessary to increase the flow rate of the flow regulating valve 2, the first linear drive mechanism 21 operates, causing the pressure block 23 to move upwards, reducing the degree of deformation of the hose 24, increasing the channel area within the hose 24, and increasing the amount of fluid that can pass through the flow regulating valve 2 per unit time. Specifically, under the action of the first linear drive mechanism 21, the pressure block 23 presses down, cooperating with the first fixed seat 22 to compress the hose 24, which can close the channel within the hose 24.

[0062] In one embodiment of the present invention, the length direction of the hose 24 is perpendicular to the movement direction of the pressure block 23, so that when the pressure block 23 presses down, it can effectively compress the hose 24 within the shortest stroke.

[0063] In one embodiment of the present invention, please refer to Figure 8 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. That is to say, when the pressure block 23 presses down to compress and seal the channel of the hose 24, the distance that needs to be moved is approximately the length of the minor axis of the ellipse. The distance that the pressure block 23 needs to move is small, so it can quickly and effectively block and open the channel inside the hose 24.

[0064] In other embodiments, the cross-section of the hose 24 is elliptical, and the minor axis of the ellipse can be set at an acute angle to the direction of movement of the pressure block 23. After the pressure block 23 reaches the predetermined travel distance, it can also press the hose 24 and disconnect the channel inside the hose 24.

[0065] In other embodiments, the cross-section of the hose 24 may also be circular, triangular, rhomboid, or other shapes, and the cross-sectional shape of the hose 24 is not limited here.

[0066] In one embodiment of the present invention, please refer to Figure 8 The hose 24 has an elliptical cross-section, with the minor axis of the ellipse 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 angle 240, with two adjacent inner walls forming this angle 240 being a first inner wall 2401 and a second inner wall 2402. When the hose 24 is compressed 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 completely close. This is in contrast to the rounded arc shape of the left and right sides of the hose 24. Figure 8 The structure of the hose 24 makes it easier to disconnect the flow control valve, preventing the flow control valve from failing to close completely.

[0067] In the above embodiment, the hose 24 can also be understood as having a rhomboid cross-section. The shorter diagonal of the rhombus is parallel to the direction of movement of the pressure block 23. The two vertices where the rhombus intersects with the longer diagonal are the first vertices, which are the aforementioned edge 240. The two vertices where the rhombus intersects with the shorter diagonal are the second vertices. When the hose 24 is squeezed by the pressure block 23, the two first vertices of the rhombus gradually decrease until they are completely closed, and the second vertices correspondingly gradually increase. The two second vertices can be rounded to prevent the hose 24 from cracking at the second vertices after repeated pressure from the pressure block 23.

[0068] In one embodiment of the present invention, please refer to Figure 8 The wall thickness of the hose 24 is greatest at the corner 240, meaning that the wall thickness of the hose 24 at the corner 240 is greater than the wall thickness of the hose 24 at other parts. During long-term use of the flow regulating valve, the connection between the two side walls (first inner wall 2401 and second inner wall 2402) that make up the corner 240 are bent repeatedly, making them prone to breakage. Increasing the wall thickness at this point can reduce the possibility of breakage and extend the service life of the hose 24.

[0069] In one embodiment of the present invention, please refer to Figure 7 The first linear drive mechanism 21 includes a first motor 211, a first lead screw 212, a first nut seat 213, and a first guide rod 214. The first motor 211 outputs rotational motion, and the first lead screw 212 is connected to the rotational end of the first motor 211, allowing the first motor 211 to drive the lead screw 212 to rotate. The first nut seat 213 is threaded to the first lead screw 212, and the first guide rod 214 passes through the first nut seat 213, parallel to the first lead screw 212. When the first lead screw 212 rotates, the first nut seat 213 moves along the length of the first lead screw 212. Under the guidance of the first guide rod 214, circumferential rotation of the first nut seat 213 is prevented, while ensuring smooth linear motion. The pressure block 23 is fixedly connected to the first nut seat 213; when the first nut seat 213 translates, the pressure block 23 moves synchronously. Therefore, when the first motor 211 is working, the pressure block 23 can reciprocate along the length of the first lead screw 212.

[0070] The number of first guide rods 214 can be multiple, and the number of guide holes on the first nut seat 213 is the same as the number of first guide rods 214. The first guide rods 214 are arranged through the corresponding guide holes. The first guide rods 214 are arranged around the first lead screw 212. For example, there are two first guide rods 214, respectively arranged on both sides of the first lead screw 212; or, there are four first guide rods 214, arranged circumferentially around the first lead screw 212.

[0071] In other embodiments of the present invention, the first linear drive mechanism 21 is a linear motor, cylinder, hydraulic cylinder, or other mechanism capable of outputting linear motion. Alternatively, the first linear drive mechanism 21 includes a first motor 211 that outputs rotary motion, a gear, and a rack. The gear is connected to the moving end of the first motor 211, the rack meshes with the gear, and the pressure block 23 is connected to the rack. In this way, when the first motor 211 is working, it can also drive the pressure block 23 to move linearly.

[0072] In one embodiment of the present invention, please refer to Figures 5 to 7 The first fixed base 22 includes a base 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 base plate 221, respectively, so that the base plate 221, the two side plates 223, and the top plate 222 form a frame structure. A flexible hose 24 is disposed between the base plate 221 and the pressure block 23. When the pressure block 23 is pressed down, the flexible hose 24 is clamped between the base plate 221 and the pressure block 23, thereby regulating the flow rate of the flexible hose 24. The flexible hose 24 passes through the gap between the two side plates 223, and both ends of the flexible hose 24 can be fixed to the base plate 221.

[0073] The flexible hose 24 can be fitted with a rigid protective tube 241 around its outer periphery. The rigid protective tube 241 is divided into two sections with a gap between them, allowing part of the flexible hose 24 to be exposed. The pressure block 23 is positioned directly opposite the exposed part of the flexible hose 24. When the pressure block 23 is pressed down, it can compress the flexible hose 24, causing it to deform. The rigid protective tube 241 can protect the non-exposed parts of the flexible hose 24, leaving only a portion exposed for the pressure block 23 to compress, thereby extending the service life of the flexible hose 24 and also providing a certain degree of shaping.

[0074] 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 the space between the two side plates 223 and is connected to the first lead screw 212.

[0075] Optionally, the first lead screw 212, the first nut seat 213, and the first guide rod 214 are all disposed between the two side plates 223, which provide a certain degree of protection for the first lead screw 212, the first nut seat 213, and the first guide rod 214. In this embodiment, there are two first guide rods 214, respectively disposed on the left and right sides of the first lead screw 212, which reduces the width space occupied by the first lead screw 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 flow regulating valve structure more compact. The two ends of the first guide rod 214 are fixed to the top plate 222 and the bottom plate 221, respectively, serving to fix the first guide rod 214.

[0076] In one embodiment of the present invention, please refer to Figure 5 and Figure 6 A first sensor 251 and a second sensor 252 are provided on the first fixed base 22. The first sensor 251 and the second sensor 252 are respectively located at both ends of the stroke of the pressure block 23 to detect whether the pressure block 23 has reached its limit position. Specifically, the first sensor 251 is used to detect whether the pressure block 23 has loosened the hose 24, that is, whether the pressure block 23 is at its highest point, and the second sensor 252 is used to detect whether the pressure block 23 has tightened the hose 24, that is, whether the pressure block 23 is at its lowest point. A first trigger plate 253 and a second trigger plate 254 may be provided on the pressure block 23. The first trigger plate 253 is used to trigger the first sensor 251, and the second trigger plate 254 is used to trigger the second sensor 252. Both the first sensor 251 and the second sensor 252 can be photoelectric sensors.

[0077] Optionally, the first sensor 251 is fixed to one side plate 223, the second sensor 252 is fixed to the other side plate 223, and a trigger structure is fixed on the pressure 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 pressure block 23 or integrally formed.

[0078] In one embodiment of the present invention, please refer to Figure 9 and Figure 10The 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 outputs linear motion, and the plug 262, driven by the second linear drive mechanism 261, can perform linear reciprocating motion. The pipe 263 has an inlet 2630, through which the plug 262 can enter the interior of the pipe 263. When the plug 262 is not inserted into the pipe 263, the passage inside the pipe 263 is unobstructed, and the flow regulating valve is fully open. The longer the plug 262 extends into the pipe, the smaller the passage in the pipe 263, and the smaller the flow rate in the pipe 263. When the plug 262 is fully inserted into the pipe 263, it can block the passage in the pipe 263, and the flow regulating valve is closed. A pressure relief channel is provided between the outer wall of the plug 262 and the inner wall of the inlet 2630. The plug 262 is disposed inside the sealing structure 264, and the first end of the plug 262 and the sealing structure 264 are fixedly connected. The other end of the sealing structure 264 is fixed to the periphery of the inlet 2630. The volume of the sealing structure 264 can be increased or decreased, for example, it can be stretched or compressed. One end of the sealing structure 264 is sealed to the plug 262 and moves with the movement of the plug 262, thereby generating stretching or compression. A sealing cavity 2643 is formed between the sealing structure 264 and the plug 262, and the sealing cavity 2643 is connected to the interior of the pipe 263. Thus, when the plug 262 moves at high frequency, the pressure inside the pipe 263 will be relatively large. When the pressure in the pipe 263 is too high, fluid will enter the sealing cavity 2643 through the gap between the plug 262 and the inlet 2630, preventing fluid leakage. The fluid can be gas, liquid, etc.

[0079] In one embodiment of the present invention, please refer to Figure 10 The plug 262 and the inlet 2630 are sealed together. A pressure relief groove 26220 is provided on the outer peripheral wall of the plug 262, allowing liquid in the pipe 263 to flow only through the pressure relief groove 26220 into the sealing cavity 2643. When the pressure in the pipe 263 is too high, the fluid in the pipe 263 can enter the sealing cavity 2643 through the pressure relief groove 26220, relieving the pressure in the pipe 263, preventing excessive impact on the plug 262, and preventing fluid leakage. The pressure relief groove 26220 can extend to the end of the plug 262 that is inserted into the pipe 263, ensuring that when this end of the plug 262 is close to the inlet 2630, it is not completely blocked by the inner wall of the inlet 2630, allowing liquid to still enter the sealing cavity 2643 through the pressure relief groove 26220.

[0080] Optionally, please refer to Figure 11The pressure relief groove 26220 is straight, and its length direction is the same 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 arranged at intervals around the perimeter of the plug 262. In this embodiment, the plug 262 can be cylindrical, elliptical cylindrical, or elongated, etc.

[0081] Optionally, the pressure relief groove 26220 extends in a spiral shape, and the spiral is arranged on the outer peripheral wall of the plug 262. Correspondingly, 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 spaced apart.

[0082] In one embodiment of the present invention, please refer to Figure 10 A sealing element 265 is provided around the periphery of the inlet 2630. When the plug 262 extends into the pipe 263 and completely blocks the pipe 263, the sealing element 265 cooperates with the plug 262 to completely seal the inlet 2630 of the pipe 263, thus keeping the flow regulating valve in the closed state. An annular groove may be formed around the periphery of the inlet 2630 to accommodate the sealing element 265. The sealing element 265 is positioned facing the interior of the sealing cavity 2643 and can be pressed against the stop step 2623 described below.

[0083] Specifically, please refer to Figure 10 and Figure 11 The plug 262 includes a connecting section 2621 and a sealing section 2622. One end of the connecting section 2621 is fixedly connected to the sealing structure 264, and the other end of the connecting section 2621 is fixedly connected to the sealing section 2622. The sealing section 2622 is used to extend into the interior of the pipe 263. A stop step 2623 is formed at the connection between the connecting section 2621 and the sealing section 2622. When the stop step 2623 of the plug 262 moves close to the inlet 2630, the stop step 2623 compresses the sealing element 265, so that the pipe 263 is sealed at the inlet 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 inside the pipe 263. The pressure relief groove 26220 cannot be connected to the sealing cavity 2643. That is, the pipe 263 is completely sealed at the inlet 2630, so that the flow regulating valve is closed.

[0084] The cross-sectional area of ​​the connecting section 2621 is greater than that of the sealing section 2622. When the cross-section of the plug 262 is circular, the diameter of the connecting section 2621 is greater than that of the sealing section 2622; when the cross-section of the plug 262 is square, the side length of the connecting section 2621 is greater than that of the sealing section 2622.

[0085] Optionally, the stop step 2623 is inclined relative to the cross-section of the plug 262. This makes the stop step 2623 easier to process and allows the plug 262 to have a longer buffer stroke after contacting the seal 265, thus preventing the seal 265 from being over-compressed.

[0086] 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 inlet 2630, which is a pressure relief channel. The pressure relief channel is used to connect the pipe 263 and the sealing cavity 2643, and the fluid in the pipe 263 can enter the sealing cavity 2643 through the pressure relief channel.

[0087] In one embodiment of the present invention, please refer to Figure 10 A sealing gasket 266 is provided at the inlet 2630 of the pipe 263. After the plug 262 is fully inserted into the pipe 263, the end of the plug 262 contacts the sealing gasket 266 and squeezes the sealing gasket 266, thereby completely closing the fluid passage in the pipe 263. A receiving groove may be provided in the pipe 263 at the sealing gasket 266, and the sealing gasket 266 is disposed in the receiving groove.

[0088] Alternatively, the end of the plug 262 that extends into the pipe 263 is provided with a sealing gasket 266. After the plug 262 is fully inserted into the pipe 263, the plug 262 and the inner wall of the pipe 263 press against each other to seal the sealing gasket 266, thereby completely closing the fluid passage in the pipe 263.

[0089] In one embodiment of the present invention, please refer to Figure 10 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, which is sealed by the end plate 2642. The other end of the folding cylinder 2641 is open and fixed to the periphery of the inlet 2630. The folding cylinder 2641 can be folded or unfolded. When folded, the folding cylinder 2641 is in a contracted state; when unfolded, it is in a stretched state. 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.

[0090] In other embodiments, the sealing structure 264 may also be a structure that can be enlarged or reduced, such as a balloon.

[0091] In one embodiment of the present invention, please refer to Figure 10 and Figure 11The second linear drive mechanism 261 includes a second motor 2611, a second lead screw 2612, a second nut seat 2613, and a second guide rod 2614. The second motor 2611 outputs rotational motion, and the second lead screw 2612 is connected to the rotational end of the second motor 2611, allowing the second motor 2611 to drive the second lead screw 2612 to rotate. The second nut seat 2613 is threadedly connected to the second lead screw 2612, and the second guide rod 2614 passes through the second nut seat 2613, and is parallel to the second lead screw 2612. When the second lead screw 2612 rotates, the second nut seat 2613 moves along the length of the second lead screw 2612. Under the guidance of the second guide rod 2614, both circumferential rotation of the second nut seat 2613 and smooth linear motion of the second nut seat 2613 are prevented. 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 of the second lead screw 2612.

[0092] The number of second guide rods 2614 can be multiple, and the number of guide holes on the second nut seat 2613 is the same as the number of second guide rods 2614. The second guide rods 2614 pass through the corresponding guide holes. The second guide rods 2614 are arranged around the second lead screw 2612. For example, there can be two second guide rods 2614, respectively located on both sides of the second lead screw 2612; or, there can be four second guide rods 2614, circumferentially arranged around the second lead screw 2612.

[0093] 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 threaded parts or other fasteners.

[0094] In other embodiments of the present invention, the second linear drive mechanism 261 is a linear motor, cylinder, hydraulic cylinder, or other mechanism capable of outputting linear motion. 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 meshes with the gear, and the plug 262 is connected to the rack. In this way, when the second motor 2611 is working, it can also drive the plug 262 to move linearly.

[0095] In one embodiment of the present invention, the flow regulating valve 2 further includes a second fixed seat 267, on which the second linear drive mechanism 261 and the pipe 263 are both disposed. A third sensor 2681 and a fourth sensor 2682 are also disposed on the second fixed seat 267, respectively located at both ends of the stroke of the plug 262, for detecting whether the plug 262 has reached the first and second limit positions. Specifically, in conjunction with... Figure 2 The first extreme position is the highest point of the plug 262, at which the passage of pipe 263 is fully open; the second extreme position is the lowest point of the plug 262, at which the passage of pipe 263 is fully closed. A third trigger piece 2683 and a fourth trigger piece 2684 can be installed on the second nut seat 2613. The third trigger piece 2683 is used to trigger the third sensor 2681, and the fourth trigger piece 2684 is used to trigger the fourth sensor 2682. Both the third sensor 2681 and the fourth sensor 2682 can be photoelectric sensors.

[0096] In one embodiment of the present invention, the flow regulating valve 2 is disposed at the power push plate 32, and the adjacent sides of the two fluid drive structures 1 are connected through the flow regulating valve 2. That is, the flow regulating valve 2 is disposed inside the housing 35, and there is no need to connect the fluid pipe 201 to the first end plate 351. The flow regulating valve 2 moves directly with the movement of the power push plate 32. In this embodiment, the flow regulating valve 2 can replace the power push plate 32.

[0097] Please see Figures 12 to 14 The flow regulating valve 2 includes two clamping plates 271 and a valve core structure 272. The valve core structure 272 is disposed between the two clamping plates 271, giving the flow regulating valve 2 a flat structure. Both clamping plates 271 have through holes 2710, which face each other. It should be noted that the through holes 2710 on the two clamping plates 271 can completely overlap, partially overlap, or one through hole 2710 can be located within the other through hole 2710, as long as the gas, liquid, or other fluid can pass through the through hole 2710 of one clamping plate 271 to the through hole 2710 of the other clamping plate 271.

[0098] The valve core structure 272 includes a rotating structure 2721, which is capable of rotation. During rotation, the rotating structure 2721 gradually blocks the through hole 2710. While the rotating structure 2721 rotates in one direction, the through hole 2710 is not blocked (at this time, the flow rate of the flow regulating valve 2 is at its maximum). Then, the blocked portion of the through hole 2710 gradually increases until it is completely blocked (at this time, the flow regulating valve 2 is closed), thereby achieving flow regulation of the flow regulating valve 2.

[0099] The sealing design at the joint surfaces between the two clamping plates 271 and the valve core structure 272 ensures that the fluid will not leak during its flow inside the flow regulating valve 2, thus guaranteeing the sealing performance of the flow regulating valve 2.

[0100] In one embodiment of the present invention, please refer to Figure 1 and Figure 2 The clamping plate 271 has multiple through holes 2710, which are spaced apart circumferentially along the rotation center axis of the rotating structure 2721. That is, all the through holes 2710 are arranged around the rotation center axis of the rotating structure 2721. Please refer to... Figure 2 and Figure 3 The number of flow regulating holes 27210 is multiple, and the multiple flow regulating holes 27210 are arranged circumferentially along the rotation center axis of the rotating structure 2721, that is, the multiple flow regulating holes 27210 are all arranged around the rotation center axis of the rotating structure 2721.

[0101] In one embodiment of the present invention, please refer to Figure 13 and Figure 14 The rotating structure 2721 has a flow regulating hole 27210, which overlaps with the through hole 2710. When the flow regulating hole 27210 and the through hole 2710 overlap, fluid can flow from one side of the flow regulating valve 2 to the other side. When the flow regulating hole 27210 and the through hole 2710 do not overlap, the flow regulating valve 2 is completely closed.

[0102] Optionally, one through hole 2710 corresponds to one flow regulating hole 27210, and the number of through holes 2710 on the same clamping plate 271 is the same as the number of flow regulating holes 27210. When one through hole 2710 completely overlaps with the flow regulating hole 27210, the other through holes 2710 also completely overlap with their corresponding flow regulating holes 27210. The through hole 2710 can be circular, arc-shaped, or other shapes, and the flow regulating hole 27210 can also be circular, arc-shaped, or other shapes.

[0103] Optionally, one through hole 2710 corresponds to one flow regulating hole group, and one flow regulating hole group may include multiple flow regulating holes 27210. For example, one flow regulating hole group includes three flow regulating holes 27210. The flow regulating hole 27210 may be a round hole, and the through hole 2710 may be a round hole or an arc-shaped hole.

[0104] In one embodiment of the present invention, please refer to Figure 15 and Figure 16The valve core structure 272 includes a rotating structure 2721 and a hinge 2726. The rotating structure 2721 is rotatable and has a guide groove 27250. One end of the hinge 2726 is guided by the guide groove 27250 and can slide along the extension direction of the guide groove 27250. The other end of the hinge 2726 is hinged to the clamping plate 271. When the rotating structure 2721 rotates, one end of the hinge 2726 slides along the extension direction of the guide groove 27250, and the other end of the hinge 2726 rotates relative to the clamping plate 271. The area of ​​the through hole 2710 blocked by the hinge 2726 changes continuously. When the through hole 2710 is completely blocked by the hinge 2726, the flow regulating valve 2 is closed. When the through hole 2710 is partially blocked by the hinge 2726, the flow regulating valve 2 is partially open. When the through hole 2710 is not blocked by the hinge 2726, the flow regulating valve 2 is fully open.

[0105] Optionally, one end of the loose-leaf 2726 has a protruding post that extends into the guide groove 27250, thereby guiding the movement of the loose-leaf 2726. The shape of the loose-leaf 2726 is not limited here.

[0106] In one embodiment of the present invention, please refer to Figure 15 and Figure 16 The rotating structure 2721 includes an annular portion 2724 and a plurality of guide portions 2725, the guide portions 2725 extending from the inner wall of the annular portion 2724 toward the center of the annular portion 2724. The length direction of the guide portion 2725 may be radial to that of the annular portion 2724. A guide groove 27250 is formed on the guide portion 2725, the length direction of the guide groove 27250 may be radial to that of the annular portion 2724. In this embodiment, the guide groove 27250 is elongated. In other embodiments, the guide groove 27250 may also be arc-shaped.

[0107] In one embodiment of the present invention, please refer to Figures 2 to 4 A first annular protrusion 2711 is provided on the side of the clamping plate 271 facing the valve core structure 272. The first annular protrusion 2711 is annular. The rotating structure 2721 is disposed inside the first annular protrusion 2711. A first sealing ring 273 is provided between the rotating structure 2721 and the first annular protrusion 2711. The first sealing ring 273 is used to seal the mating surfaces between the two clamping plates 271 and the rotating structure 2721. Specifically, the first sealing ring 273 is provided between the outer peripheral wall of the rotating structure 2721 and the inner peripheral wall of the first annular protrusion 2711. The inner peripheral wall of the first sealing ring 273 abuts against the outer peripheral wall of the rotating structure 2721, and the outer peripheral wall of the first sealing ring 273 abuts against the inner peripheral wall of the first annular protrusion 2711. The two end faces of the first sealing ring 273 in the axial direction abut against the two clamping plates 271 respectively.

[0108] Optionally, one of the clamping plates 271 is provided with a first annular protrusion 2711; or, both clamping plates 271 are provided with a first annular protrusion 2711, and the two first annular protrusions 2711 are arranged facing each other.

[0109] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 A boss structure 2715 is provided on the side of the clamping plate 271 facing the valve core structure 272. The boss structure 2715 can be located at the center of the clamping plate 271. A second sealing ring 274 is provided on the outer peripheral wall of the boss structure 2715, thereby sealing the inner peripheral wall of the rotating structure 2721. Specifically, the inner peripheral wall of the second sealing ring 274 abuts against the outer peripheral wall of the boss structure 2715, and the two end faces of the second sealing ring 274 in the axial direction abut against the two clamping plates 271 respectively.

[0110] Optionally, one of the clamping plates 271 is provided with a boss structure 2715; or, both clamping plates 271 are provided with boss structures 2715, and the two boss structures 2715 are arranged facing each other. The boss structure 2715 may be frustum-shaped.

[0111] In one embodiment of the present invention, please refer to Figures 2 to 4 The valve core structure 272 also includes a first connecting rod 2722 and a second connecting rod 2723. One end of the first connecting rod 2722 is hinged to the clamping plate 271, and the other end of the first connecting rod 2722 is hinged to one end of the second connecting rod 2723. The other end of the second connecting rod 2723 is fixedly connected to the rotating structure 2721. The first connecting rod 2722 is a telescopic rod, which allows the first connecting rod 2722 to drive the second connecting rod 2723 and the rotating structure 2721 to rotate relative to the rotation center axis of the rotating structure 2721 when the first connecting rod 2722 rotates. The second connecting rod 2723 can be arranged radially along the rotating structure 2721 to minimize the space occupied by the second connecting rod 2723 when it moves, and to minimize the size of the clearance notch 2713 described below.

[0112] In other embodiments, the other end of the first link 2722 is hinged to one end of the second link 2723, and the other end of the second link 2723 is hinged to the rotating structure 2721, which can also cause the rotating structure 2721 to rotate about its rotation center axis.

[0113] In other embodiments, the rotating structure 2721 can be directly driven to rotate, without the need for the first link 2722 and the second link 2723.

[0114] In one embodiment of the present invention, please refer to Figures 2 to 4The clamping plate 271 has a first annular protrusion 2711 and a second annular protrusion 2712 protruding from the side facing the valve core structure 272. The rotating structure 2721 is located inside the first annular protrusion 2711, and the second annular protrusion 2712 is located outside the first annular protrusion 2711. That is, the rotating structure 2721, the first annular protrusion 2711, and the second annular protrusion 2712 are arranged radially outward from the center of the rotating structure 2721. An annular groove 2714 is formed between the first annular protrusion 2711 and the second annular protrusion 2712, and a third sealing ring 275 is provided inside the annular groove 2714. The first connecting rod 2722 and the second connecting rod 2723 are located outside the rotating structure 2721. Both the first annular protrusion 2711 and the second annular protrusion 2712 are provided with clearance notches 2713, and the second connecting rod 2723 extends out from the clearance notches 2713. In other embodiments, the first link 2722 and the second link 2723 may also be disposed within the ring of the rotating structure 2721.

[0115] Since the outer wall of the self-rotating structure 2721 of the second connecting rod 2723 extends outward, fluid may leak from the second connecting rod 2723. Therefore, a third sealing ring 275 is provided to seal the second connecting rod 2723.

[0116] Optionally, both clamping plates 271 are provided with a first annular protrusion 2711 and a second annular protrusion 2712, and the number of third sealing rings 275 is also two. The two third sealing rings 275 are arranged to clamp the second connecting rod 2723, thereby preventing fluid from leaking from the second connecting rod 2723.

[0117] In one embodiment of the present invention, please refer to 3 and Figure 4 Both ends of the clearance notch 2713 have stop faces. The two stop faces are used to limit the rotation angle of the second link 2723, so that the second link 2723 can rotate within a predetermined angle. Only when it rotates within the predetermined angle can the flow rate of the flow regulating valve 2 be regulated.

[0118] In one embodiment of the present invention, please refer to Figure 2 and Figure 3 The second connecting rod 2723 has a connecting rod groove 27230, which is used to avoid the third sealing ring 275, so that part of the third sealing ring 275 is recessed into the connecting rod groove 27230. When the second connecting rod 2723 moves, it can keep the third sealing ring 275 within the connecting rod groove 27230, preventing the third sealing ring 275 from being rolled and deformed by the second connecting rod 2723. Connecting rod grooves 27230 are provided on both sides of the second connecting rod 2723, respectively, to avoid the corresponding third sealing rings 275.

[0119] Please see Figure 4 and Figure 5 The present invention also provides a fitness device, which includes the damping structure 100 in any of the above embodiments. Please refer to [link / reference]. Figure 17 The fitness equipment also includes a first rod 200 and a second rod 300, the first rod 200 being connected to a first connector 33, and the second rod 300 being connected to a second connector 34.

[0120] The fitness equipment provided by this invention employs the aforementioned damping structure 100. The damping structure 100 has two fluid drive structures 1, with a power push plate 32 positioned between them. A flow regulating valve 2 connects the two fluid drive structures 1. When the first connecting member 33 rotates relative to the second connecting member 34, the transmission assembly 31 converts the rotational motion of the first connecting member 33 into linear motion, thereby moving the power push plate 32. During the movement of the power push plate 32, fluid flows from one fluid drive structure 1 to the other through the flow regulating valve 2, causing one fluid drive structure 1 to increase in volume and the other to decrease. Fitness enthusiasts can overcome fluid resistance by moving the first connecting member 33 and the second connecting member 34 relative to each other, thus achieving their fitness goals. This damping structure 100 has a long service life and does not experience irreversible structural deformation like a spring.

[0121] In one embodiment of the present invention, please refer to Figure 17 The fitness equipment also includes a handle structure 400, which is used to connect to the first bar 200 and / or the second bar 300. That is, the handle structure 400 is connected to the end of the first bar 200 or the second bar 300 furthest from the damping mechanism 100, or both ends of the first bar 200 and the second bar 300 furthest from the damping mechanism 100 are connected to the handle structure 400. The handle structure 400 is designed to make it easier for fitness enthusiasts to grip the equipment, improving hand comfort during exercise.

[0122] In one embodiment of the present invention, please refer to Figures 18 to 20 The handle structure 400 includes a handle body 41 and a first rotating connector 42, which are rotatably connected. The first rotating connector 42 is used to connect with a first rod 200 and / or a second rod 300. The following description focuses on the connection between the first rotating connector 42 and the first rod 200. Thus, 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 arm exertion more comfortable and avoiding wrist strain.

[0123] The handle body 41 includes a grip portion 411 and a second rotating connector 412, which are rotatably connected. The first rotating connector 42 has a first abutment surface 421 and a second abutment surface 422, and the second rotating connector 412 has a third abutment surface 41211 and a fourth abutment surface 41212. The first abutment surface 421 abuts against the third abutment surface 41211, and the second abutment surface 422 abuts against the fourth abutment surface 41212. The included angle between the first abutment surface 421 and the second abutment surface 422 is greater than the included angle between the third abutment surface 41211 and the fourth abutment surface 41212. Thus, when the first abutment surface 421 and the third abutment surface 41211 abut against each other, the second abutment surface 422 and the fourth abutment surface 41212 are set at an angle; and when the second abutment surface 422 and the fourth abutment surface 41212 abut against each other, the first abutment surface 421 and the third abutment surface 41211 are set at an angle. In this way, the handle body 41 and the first rotating connector 42 can rotate relative to each other, and the first abutment surface 421 and the second abutment 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 the arm exerts force, the handle body 41 can be adjusted to a more suitable position, allowing the wrist to be extended as much as possible.

[0124] In one embodiment of the present invention, please refer to Figure 19 and Figure 20 The third abutment surface 41211 and the fourth abutment surface 41212 are connected by a transition surface 41213. That is, the third abutment surface 41211, the transition surface 41213, and the fourth abutment surface 41212 are connected sequentially. The transition surface 41213 avoids the formation of sharp corners between the third abutment surface 41211 and the fourth abutment surface 41212, preventing excessive wear on the contact surfaces of the first rotating connector 42 and the second rotating connector 412. The transition surface 41213 can be an arc surface, such as a circular arc surface or an arc surface formed by the smooth connection of multiple circular arc surfaces. The transition surface 41213 can also be a plane. The transition surface 41213 can also be a combination of a plane and an arc surface. For example, the transition surface 41213 is formed by the sequential connection of one arc surface, one plane, and another arc surface, so that the third abutment surface 41211 and the fourth abutment surface 41212 are smoothly connected. The transition surface 41213 can also be multiple planes connected sequentially.

[0125] In one embodiment of the present invention, the included angle between the first abutment surface 421 and the second abutment surface 422 is 70° to 110°, and the included angle between the third abutment surface 41211 and the fourth abutment surface 41212 is 30° to 80°. Optionally, the included angle between the first abutment surface 421 and the second abutment surface 422 is 90±10°, and the included angle between the third abutment surface 41211 and the fourth abutment 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.

[0126] In one embodiment of the present invention, please refer to Figure 18 and Figure 19 The rotation center axis of the first rotating connector 42 and the second rotating connector 412 is a rotation axis, which is perpendicular to the length direction of the grip portion 411. It should be noted that when the hand is gripping the grip portion 411, the direction perpendicular to the four fingers is the length direction of the grip portion 411. In this way, when the handle body 41 rotates relative to the first rotating connector 42, it can compensate for the rotation of the wrist, so that the arm and hand can be kept as straight as possible without the need for wrist force.

[0127] In one embodiment of the present invention, please refer to Figure 19 The outer wall of the first rotating connector 42 has a stepped structure 420. Alternatively, it can be considered that the material of the L-shaped structure is removed from the outer wall of the first rotating connector 42 to form the stepped structure 420. The stepped structure 420 has intersecting bottom and side surfaces. The bottom surface is the first abutment surface 421, and the side surface is the second abutment surface 422. The included angle between the first abutment surface 421 and the second abutment surface 422 can be 90° or close to 90°. By providing the stepped structure 420 on the outer wall of the first rotating connector 42, the first abutment surface 421 and the second abutment surface 422 can be formed, making the structure of the first rotating connector 42 relatively simple and convenient for processing and forming.

[0128] In one embodiment of the present invention, please refer to Figure 19 and Figure 20 The second rotating connector 412 has an L-shaped receiving space 4120, and the first rotating connector 42 is located within the L-shaped receiving space 4120, making the handle structure 400 thinner and more compact. The inner wall of the L-shaped receiving space 4120 is directly opposite the first abutment surface 421 and the second abutment surface 422. The inner wall of the L-shaped receiving space 4120 includes a third abutment surface 41211 and a fourth abutment surface 41212, so that the first abutment surface 421 can abut against the third abutment surface 41211, and the second abutment surface 422 can abut against the fourth abutment surface 41212.

[0129] In one embodiment of the present invention, please refer to Figure 20 The second rotating connector 412 includes a handle connector 4121 and a pivot connector 4122. One end of the handle connector 4121 is fixedly connected to the grip portion 411, and the other end of the handle connector 4121 has a third abutment surface 41211 and a fourth abutment surface 41212. The third abutment surface 41211 may be the end wall of the handle connector 4121, and the fourth abutment surface 41212 may be the side wall of the handle connector 4121 near its end. The side wall of the pivot connector 4122 is connected to the side wall of the handle connector 4121, and the end wall of the handle connector 4121 away from the grip portion 411 and the side wall of the pivot connector 4122 form the aforementioned L-shaped receiving space 4120.

[0130] The grip part 411, the handle connecting part 4121 and the pivot connecting part 4122 can be integrally formed.

[0131] In one embodiment of the present invention, please refer to Figure 19 The handle structure 400 also includes a rotating fixing member 43, which connects the first rotating connecting member 42 and the rotating shaft connecting part 4122, so that the handle body 41 is rotatably connected to the first rotating connecting member 42. The rotating fixing member 43 can be a pin or other structure. Specifically, the first rotating connecting member 42 has a first shaft hole 423, and the end of the rotating shaft connecting part 4122 away from the handle connecting part 4121 has a second shaft hole 41220. The first shaft hole 423 and the second shaft hole 41220 are directly opposite each other. The rotating fixing member 43 passes through the first shaft hole 423 and the second shaft hole 41220, thereby realizing the rotatable connection between the handle body 41 and the first rotating connecting member 42.

[0132] In one embodiment of the present invention, please refer to Figure 21 and Figure 22 The fitness equipment also includes a fitness base structure 500, which is detachably connected to the first member 200 and / or the second member 300. For ease of description, the fitness base structure 500 is described as detachably connected to the first member 200, thereby making the use of the fitness equipment more diverse and the application range of the fitness base structure 500 wider.

[0133] Please see Figure 21 A damping mechanism 200 is installed on the fitness base structure 500. Please refer to [link / reference]. Figure 22Two damping mechanisms 200 are installed on the fitness base structure 500. Correspondingly, there are also two first rods 200 and two second rods 300, with the two first rods 200 connected to different linkage structures of the same or identical fitness base structure 500. The ends of the two second rods 300 furthest from the damping mechanism 100 are connected to each other via a connecting shaft 600. During exercise, the user can grip the connecting shaft 600 with both hands, causing the second rods 300 to rotate relative to the first rods 200, thus achieving the purpose of exercise. Figure 22 In one 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 added to form... Figure 21 The fitness equipment in the middle. Therefore, by designing the fitness base structure 500 as the above structure, the use of the fitness equipment can be made more diversified.

[0134] Please see Figures 23 to 25 The fitness base structure 500 includes a base 51, an elastic element 53, a movable rod 52, and a fixed rod 54. The movable rod 52 is movable relative to the base 51, and the fixed rod 54 is fixedly connected to the base 51. Both ends of the elastic element 53 abut against the base 51 and the movable rod 52 respectively. Under the elastic force of the elastic element 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 for detachable connection with a first connecting rod 200. Specifically, the first connecting rod 200 can be sleeved on the movable rod 52, or it can be sleeved on the fixed rod 54. Alternatively, the first connecting rod 200 can be partially sleeved on the movable rod 52 and partially sleeved on the fixed rod 54.

[0135] When installing the first connecting rod 200, the movable rod 52 is moved, and the elastic element 53 is gradually compressed. The movable rod 52 gradually separates from the fixed rod 54, and the collar on the first connecting rod 200 is fitted onto the fixed rod 54 or the movable rod 52. Then, the movable rod 52 is released, and under the restoring force of the elastic element 53, the movable rod 52 returns to abutting against the fixed rod 54, so that the first connecting rod 200 is stably installed on the connecting rod structure. When disassembling the first connecting rod 200, the movable rod 52 is moved, and the elastic element 53 is gradually compressed, and the movable rod 52 gradually separates from the fixed rod 54. Then, the first connecting rod 200 is removed from the fixed rod 54 or the movable rod 52, and the movable rod 52 is released. Under the restoring force of the elastic element 53, the movable rod 52 returns to abutting against the fixed rod 54. Thus, using the fitness base structure 500 in this embodiment, the installation, disassembly, and replacement of equipment are very convenient.

[0136] 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 linkage structure from swaying and enhancing the linkage structure's resistance to bending moments. 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 is applied to 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 is applied to 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.

[0137] In one embodiment of the present invention, please refer to Figure 24 The base 51 includes a base plate 511 and a cover plate 512. The cover plate 512 is fixed to the base plate 511, and the cover plate 512 and the base plate 511 are detachably or fixedly connected. One end of the fixing rod 54 and one end of the movable rod 52 are both located inside the cover plate 512. This end of the fixing rod 54 can be fixed to the base plate 511 or the cover plate 512. The movable rod 52 is disposed through the cover plate 512 and can slide relative to the cover plate 512. The other end of the fixing rod 54 (exposed in the cover plate 512) and the other end of the movable rod 52 (exposed in the cover plate 512) are arranged opposite each other, and when the movable rod 52 is not subjected to external force, the two abut against each other.

[0138] Optionally, please refer to Figure 26 The cover plate 512 has a first perforated hole 5121. The wall of the first perforated hole 5121 has a first clearance hole 5123 and a second clearance hole 5124, which face 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 clearance hole 5123 to the first perforated 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 clearance hole 5124 to the first perforated hole 5121. The fixed rod 54 and the movable rod 52 abut against each other within the space enclosed by the first perforated hole 5121. By providing a first perforated hole 5121 on the cover plate 512, the movable rod 52 and the fixed rod 54 can be fixed or positioned inside the cover plate 512, and can also abut against each other within the range of the first perforated hole 5121, without the need to design separate fixing structures for the movable rod 52 and the fixed rod 54.

[0139] Optionally, the cover plate 512 is annular, and the first perforated hole 5121 is the annular inner hole of the cover plate 512.

[0140] In one embodiment of the present invention, please refer to Figure 24 The movable rod 52 has a positioning step 521 at one end inside the cover plate 512, which 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 clearance hole 5123 abuts against the positioning step 521, so that the movable rod 52 will not fall off the cover plate 512, and has an axial limiting effect on the movable rod 52.

[0141] The cover plate 512 has a first receiving cavity 5125 for accommodating the movable rod 52. One end of the first receiving cavity 5125 is a first clearance hole 5123 through which the movable rod 52 passes. The inner wall of the first receiving cavity 5125 guides and positions the movable rod 52. The cover plate 512 also has a second receiving cavity 5126 for accommodating the fixed rod 54. One end of the second receiving cavity 5126 is a second clearance 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.

[0142] In one embodiment of the present invention, please refer to Figure 23 and Figure 24 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 patterned, have anti-slip textures, or other structures to facilitate its movement. The paddle 55 is located on the side of the cover plate 512 facing away from the base plate 511, meaning it is located on the outside of the cover plate 512 for easy manual control.

[0143] Optionally, one end of the first receiving cavity 5125 is a first clearance hole 5123, which penetrates the cover plate 512. The side of the first receiving 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 threaded parts or other fasteners.

[0144] In one embodiment of the present invention, please refer to Figure 26 A guide groove 5122 is provided on the side of the cover plate 512 facing away from the base plate 511. The guide groove 5122 is used to accommodate the paddle 55. During the movement of the paddle 55, the guide groove 5122 can guide the paddle 55. Since the paddle 55 and the movable rod 52 are fixedly connected, and the movement directions of the paddle 55 and the movable rod 52 are the same, the length direction of the guide groove 5122 is also the same as the movement direction of the movable rod 52.

[0145] In one embodiment of the present invention, please refer to Figure 24The substrate 511 has a second cutout hole 5110, which is directly opposite the first cutout hole 5121, making the center of the base 51 hollow. This prevents the device from colliding with the substrate 511 during installation, even if the connection between the device and the connecting rod is large, thus providing ample installation space. The first cutout hole 5121 and the second cutout hole 5110 can be identical in size and shape.

[0146] In one embodiment of the present invention, please refer to Figure 24 and Figure 25 A guide rod 56 is fixed on the base 51, with one end of the guide rod 56 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. An elastic member 53 is sleeved on the guide rod 56, with the first end of the elastic member 53 abutting against the stop step of the base 51 or the guide rod 56, and the second end of the elastic member 53 abutting against the movable rod 52. The guide rod 56 provides positioning and guiding for the elastic member 53, ensuring that the elastic member 53 can only deform in its extension and contraction direction, preventing it from bending and jumping in other directions. The elastic member 53 can be a spring. The guide rod 56 can extend through the cover plate 512 into the first receiving cavity 5125 of the cover plate 512, so that part of the guide rod 56 and part of the movable rod 52 are located within the first receiving cavity 5125.

[0147] Optionally, the movable rod 52 is cylindrical, and the elastic element 53 and the guide rod 56 both extend into the interior of the movable rod 52, so that the movement of the movable rod 52 is more stable when the elastic element 53 extends or retracts.

[0148] In other embodiments, a guide hole is provided 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 inside the guide hole. The inner wall of the guide hole can also play a positioning and guiding role for the elastic member 53.

[0149] Optionally, the number of base plates 511 is one, and the number of cover plates 512, elastic elements 53, movable rods 52 and fixed rods 54 is multiple, so that the fitness base plate structure 500 has multiple linkage structures, and each linkage structure can be detachably installed with corresponding equipment.

[0150] 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 within the protection scope of the present invention.

Claims

1. A fitness device, characterized in that: The device includes a damping mechanism, a first rod, and a second rod. The damping mechanism comprises two fluid drive structures, a power push plate, a flow regulating valve, a transmission assembly, and a first and second connecting member that can move relative to each other. The power push plate is spaced apart between the two fluid drive structures, and the two fluid drive structures are connected through the flow regulating valve. The first connecting member is connected to the power input end of the transmission assembly and is manually driven to rotate. The power push plate is connected to the power output end of the transmission assembly. The second connecting member is fixedly connected to the fixed ends of the two fluid drive structures. The transmission assembly is used to output the rotational motion of the first connecting member as the linear motion of the power push plate. The first rod is connected to the first connecting member, and the second rod is connected to the second connecting member. The transmission assembly includes a transmission screw and a threaded sleeve, the threaded sleeve being threadedly connected to the transmission screw, the first connecting member being fixedly connected to the transmission screw, and the power push plate being fixedly connected to the threaded sleeve. The fluid drive structure includes a first end plate, a second end plate, and a folding unit, the two ends of the folding unit being respectively connected to the first end plate and the second end plate, both second end plates being fixedly connected to the power push plate, and the two ends of the transmission screw being rotatably supported by the two first end plates. The first end plate, the second end plate, and the power push plate are arranged in parallel. When the volume of the fluid drive structure increases, the folding unit gradually unfolds, and the distance between the first end plate and the second end plate gradually increases. When the volume of the fluid drive structure decreases, the folding unit gradually folds, and the distance between the first end plate and the second end plate gradually decreases.

2. The fitness equipment as described in claim 1, characterized in that: The damping mechanism further includes a guide rod and a guide sleeve fitted on the guide rod. The two ends of the guide rod are respectively fixed to the two first end plates, and the guide rod is parallel to the transmission screw. The guide sleeve is fixedly connected to the power push plate.

3. The fitness equipment as described in any one of claims 1-2, characterized in that: The fluid drive structure is connected to a fluid pipe on the side away from the power push plate, and the flow regulating valve is connected to the two fluid drive structures through the fluid pipe.

4. The fitness equipment as described in claim 3, characterized in that: The flow regulating valve includes a first linear drive mechanism, a pressure block, a hose for supplying fluid, 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 is used to squeeze the hose to change the cross-sectional area of ​​the inner channel of the hose. The hose is disposed between the first fixed seat and the pressure block.

5. The fitness equipment as described in claim 4, characterized in that: The cross-section of the hose is elliptical, and the minor axis of the ellipse is parallel to the direction of movement of the pressure block.

6. The fitness equipment as described in claim 5, characterized in that: The inner wall of the hose intersects with the major axis of the ellipse at an angle, and the wall thickness of the hose is greatest at the angle.

7. The fitness equipment as described in claim 3, characterized in that: 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 variable-volume sealing structure. The pipe has an inlet for the plug to extend into. One end of the sealing structure is sealed to the plug, and the other end of the sealing structure is fixed to the periphery of the inlet. The plug is disposed inside the sealing structure, and a sealing cavity is formed between the sealing structure and the plug.

8. The fitness equipment as described in claim 7, characterized in that: The sealing structure includes a foldable and unfoldable folding cylinder 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 pipe. The end of the folding cylinder away from the end plate is sealed and connected to the periphery of the inlet.

9. The fitness equipment as described in claim 7, characterized in that: The plug and the inlet are sealed together, and the outer peripheral wall of the plug is provided with a pressure relief groove, which is used to connect the pipe and the sealing cavity.

10. The fitness equipment as described in claim 9, characterized in that: A sealing element is provided around the inlet. The plug includes a connecting section and a sealing section for extending into the pipe. The pressure relief groove is provided in the sealing section. A stop step is formed at the connection between the connecting section and the sealing section. The stop step is used to press the sealing element.

11. The fitness equipment as described in any one of claims 1-2, characterized in that: The flow regulating valve is located at the power push plate, and the adjacent sides of the two fluid drive structures are connected through the flow regulating valve.

12. The fitness equipment as described in claim 11, characterized in that: The flow regulating valve includes two clamping plates and a valve core structure disposed between the two clamping plates. Both clamping plates have through holes, and the through holes on the two clamping plates are directly opposite each other. The valve core structure includes a rotating structure that can rotate, and the rotating structure is used to gradually block the through holes during rotation. The mating surfaces between the two clamping plates and the rotating structure are sealed.

13. The fitness equipment as described in claim 12, characterized in that: The rotating structure has a flow regulating hole for overlapping with the through hole.

14. The fitness equipment as described in claim 12, characterized in that: The valve core structure also includes a hinge for blocking the through hole. The rotating structure has a guide groove. One end of the hinge slides along the extension direction of the guide groove, and the other end of the hinge is hinged to the clamping plate. The mating surfaces between the two clamping plates and the valve core structure are sealed.

15. The fitness equipment as described in claim 12, characterized in that: The clamping plate has a first annular protrusion protruding on the side facing the valve core structure, and the rotating structure is disposed within the first annular protrusion. A first sealing ring is disposed between the inner peripheral wall of the first annular protrusion and the outer peripheral wall of the rotating structure. The clamping plate has a boss structure protruding on the side facing the valve core structure, and a second sealing ring is disposed on the outer peripheral wall of the boss structure.

16. The fitness equipment as described in claim 12, characterized in that: The valve core structure also includes a first connecting rod and a second connecting rod. One end of the first connecting rod is hinged to the clamping plate, and the other end of the first connecting rod is hinged to the second connecting rod. The end of the second connecting rod away from the first connecting rod is fixedly connected to the rotating structure. The first connecting rod is a telescopic rod.

17. The fitness equipment as described in claim 16, characterized in that: The clamping plate has a first annular protrusion and a second annular protrusion protruding on the side facing the valve core structure. The rotating structure is located inside the first annular protrusion, and the second annular protrusion is located outside the first annular protrusion. An annular groove is formed between the first annular protrusion and the second annular protrusion. A third sealing ring is provided in the annular groove. Both the first annular protrusion and the second annular protrusion have clearance notches for the second connecting rod to extend.

18. The fitness equipment as described in claim 1, characterized in that: The fitness equipment also includes a handle structure, which includes a handle body and a first rotating connector for connecting to the first rod and / or the second rod. The handle body includes a grip portion and a second rotating connector fixedly connected to the grip portion. The first rotating connector and the second rotating connector are rotatably connected. The first rotating connector has a first abutment surface and a second abutment surface, and the second rotating connector has a third abutment surface and a fourth abutment surface. The included angle between the first abutment surface and the second abutment surface is greater than the included angle between the third abutment surface and the fourth abutment surface, such that when the first rotating connector and the second rotating connector rotate relative to each other, the third abutment surface abuts against the first abutment surface, or the fourth abutment surface abuts against the second abutment surface.

19. The fitness equipment as described in claim 18, characterized in that: The third abutting surface and the fourth abutting surface are connected by a transition surface, which is a combination of an arc surface, a plane, a plane and an arc surface, or multiple planes connected in sequence.

20. The fitness equipment as described in claim 18, characterized in that: The outer wall of the first rotating connector has a stepped structure, the bottom surface of the stepped structure is the first abutting surface, and the side surface of the stepped structure is the second abutting surface.

21. The fitness equipment as described in claim 17, characterized in that: The fitness equipment also includes a fitness base structure, which includes a base, an elastic element, a movable rod, and a fixed rod fixedly connected to the base. The two ends of the elastic element abut against the base and the movable rod, respectively. Under the action of the elastic element, the movable rod abuts against the fixed rod to form a connecting rod structure. The connecting rod structure is used for detachable connection with the first rod and / or the second rod. The extension and retraction direction of the elastic element is the same as the length direction of the connecting rod structure.

22. The fitness equipment as described in claim 21, characterized in that: The base includes a base plate and a cover plate fixed on the base plate. The cover plate has a first hollow hole. The wall of the first hollow hole has a first clearance hole and a second clearance hole. The movable rod passes through the first clearance hole and the fixed rod passes through the second clearance hole, so that the movable rod and the fixed rod are facing each other.

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