A hub and a fitness device

Abstract

The present invention provides a hub and a fitness device. The hub includes: a support shaft; a clutch wheel, the clutch wheel including a first wheel and a second wheel rotatably mounted on the support shaft; a first pull rope, one end of the first pull rope connected to the first wheel and wound around the clutch wheel; a second pull rope, one end of the second pull rope connected to the second wheel and wound around the clutch wheel; and a locking mechanism, the locking mechanism being configured to move to a locked position or an unlocked position; in the locked position, the locking mechanism circumferentially fixes the first and second wheels; in the unlocked position, the first and second wheels are circumferentially rotatable relative to each other.

Description

Technical Field

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

[0002] Conventional fitness equipment includes a support frame, a tension arm, rollers, a pull rope, and a counterweight mechanism. One end of the tension arm is fixedly mounted on the support frame. Rollers are provided on the tension arm and the support frame. The pull rope is wound around the rollers. The tension arm is connected to the counterweight mechanism via the pull rope.

[0003] The tension arm cannot be moved relative to the support frame to adjust its height. If one end of the tension arm is movably mounted on the support frame, while the arm's height can be adjusted, the counterweight generator mechanism remains in operation while the user manipulates the movable tension arm, and the generator's motor shaft continuously generates rotational damping that feeds back onto the first tension rope. This requires significant force to operate the movable tension arm, making it difficult to adjust the arm's height and resulting in a poor user experience. Summary of the Invention

[0004] The present invention provides a hub and a fitness device, which are convenient for operating and adjusting the height of a pulling arm.

[0005] According to a first aspect of the present invention, a hub is provided. The hub comprises:

[0006] Support shaft;

[0007] A clutch wheel, the clutch wheel comprising a first wheel and a second wheel rotatably mounted on the support shaft;

[0008] a first pull rope, one end of which is connected to the first rotating wheel and is wound around the clutch rotating wheel;

[0009] a second pull rope, one end of which is connected to the second rotating wheel and is wound around the clutch rotating wheel; and

[0010] a lock mechanism configured to move to a locked position or an unlocked position;

[0011] In the locking position, the locking mechanism circumferentially fixes the first rotating wheel and the second rotating wheel;

[0012] In the unlocking position, the first rotating wheel and the second rotating wheel can rotate relative to each other.

[0013] Optionally, the first rotating wheel and the second rotating wheel are axially aligned;

[0014] The first rotating wheel is provided with a first hole;

[0015] The first hole is arranged to extend along the axial direction of the first runner and is arranged to deviate from the axis of the first runner;

[0016] The second rotating wheel is provided with a second hole;

[0017] The second hole is arranged to extend along the axial direction of the second rotor and is arranged to deviate from the axis of the second rotor;

[0018] The locking mechanism includes a locking shaft;

[0019] The lock shaft is configured to be axially movable to the locking position or the unlocking position;

[0020] In the locking position, the locking shaft is inserted into the second hole and the first hole, thereby circumferentially fixing the first rotating wheel and the second rotating wheel;

[0021] In the unlocking position, the lock shaft is at least disengaged from the first hole, so that the first rotating wheel and the second rotating wheel can rotate relative to each other in the circumferential direction.

[0022] Optionally, the second hole is provided through the second rotating wheel;

[0023] The locking mechanism includes a locking ring;

[0024] The locking ring surrounds the support shaft and is radially spaced apart from the support shaft;

[0025] The locking ring is arranged on the side of the second rotating wheel facing away from the first rotating wheel;

[0026] The lock shaft protrudes from one axial side of the lock ring and is axially slidably inserted into the second hole, so that the lock shaft can rotate around the support shaft together with the second rotating wheel.

[0027] Optionally, a flange linear bearing is also included;

[0028] The flange linear bearing comprises a sleeve provided with a steel ball inner hole and a flange wall radially protruding from the outer peripheral surface of the sleeve;

[0029] The flange wall is fixedly connected to the axial end surface of the second rotor, and the sleeve is inserted into the second hole;

[0030] The lock shaft can be axially slidably inserted into the inner hole of the steel ball.

[0031] Optionally, a plurality of second holes are circumferentially arranged around the second rotating wheel, and the lock shaft is inserted into each of the second holes;

[0032] The number of the first holes is greater than the number of the second holes, and the plurality of first holes are circumferentially arranged around the first rotating wheel.

[0033] Optionally, the locking mechanism further comprises an elastic member;

[0034] The elastic member is configured to be elastically deformable, thereby applying an elastic locking force to the locking ring to keep the locking shaft in the locking position;

[0035] The lock ring is configured to move axially away from the second rotating wheel when subjected to an external unlocking force, and drive the lock shaft to move axially to the unlocking position.

[0036] Optionally, a collar is sleeved on the support shaft;

[0037] The collar is axially fixed to the support shaft and is located on a side of the first rotating wheel facing away from the second rotating wheel;

[0038] A bushing is provided in the first hole, and the bushing is provided with a bushing hole;

[0039] In the locking position, the locking shaft is inserted into the second hole and the bushing hole, thereby circumferentially fixing the first rotating wheel and the second rotating wheel;

[0040] In the unlocking position, the lock shaft is at least disengaged from the bushing hole, so that the first rotating wheel and the second rotating wheel can rotate relative to each other in the circumferential direction.

[0041] Optionally, the first rotating wheel and the second rotating wheel are arranged adjacent to each other axially;

[0042] The first rotating wheel is provided with a first winding portion;

[0043] The second rotating wheel is provided with a second winding portion;

[0044] The outer circumference of the first winding portion and the outer circumference of the second winding portion are axially flush with each other, and together constitute a winding portion;

[0045] One end of the first pull rope is connected to the first rotating wheel and is wound on the winding portion;

[0046] One end of the second pull rope is connected to the second rotating wheel and is wound on the winding portion;

[0047] A first rolling bearing is provided between the first rotating wheel and the support shaft;

[0048] A second rolling bearing is provided between the second rotating wheel and the support shaft.

[0049] According to a second aspect of the present invention, a fitness machine is provided. The fitness machine comprises:

[0050] floor;

[0051] A panel, wherein a support frame and a guide mechanism are provided on the panel, wherein the guide mechanism includes a tension arm and a guide wheel, wherein one end of the tension arm is movably connected to the support frame, and the guide wheel is mounted on the support frame and the tension arm;

[0052] The above-mentioned hub, the support shaft is installed on the support frame; and

[0053] A counterweight power generation mechanism, comprising a central shaft, a mainspring, a winding bobbin, and a generator;

[0054] The central shaft is rotatably connected to the support frame and is connected to the motor shaft of the generator;

[0055] The winding bobbin is respectively covered on the mainspring and the central shaft;

[0056] The inner coil of the mainspring is connected to the mounting seat, and the outer coil is connected to the winding drum;

[0057] A one-way bearing is provided between the winding drum and the central shaft so that the winding drum can only drive the central shaft to rotate in one direction;

[0058] The other end of the first pull rope is wound around the guide wheel and passes through the outside of the tension arm;

[0059] The other end of the second pull rope is connected to the winding drum and is wound around the outer peripheral wall of the winding drum.

[0060] Optionally, one end of the tension arm is slidably connected to or rotatably connected to the support frame, so that the height of the other end of the tension arm can be adjusted to a desired height;

[0061] In the locked position, when the first pull rope is pulled by an external force, it can drive the first rotating wheel and the second rotating wheel to rotate together, and the first rotating wheel can pay out the line and the second rotating wheel can reel in the line, and the second pull rope can drive the winding drum and the central shaft to rotate together, so that the central shaft drives the generator to generate electricity, so that the winding drum pays out the line and drives the mainspring to tighten; when the force on the first pull rope disappears, the mainspring elastic force is released, thereby driving the winding drum to reverse, so that the winding drum reels in the line, and the first rotating wheel and the second rotating wheel can be driven to reverse together by the second pull rope, so that the second rotating wheel pays out the line and the first rotating wheel reels in the line;

[0062] In the unlocked position, when one end of the pulling arm moves relative to the supporting frame and drives the first rotating wheel to rotate through the first pull rope, the second rotating wheel does not rotate.

[0063] The technical benefits of the present invention include:

[0064] When the locking mechanism is in the unlocked position, the height of the pulling arm is adjusted, the second wheel does not rotate, the counterweight generator mechanism does not work, and the motor shaft of the generator does not generate rotational damping that is fed back to the first pull rope, making it easy to operate and adjust the height of the pulling arm, saving the user's physical strength and improving the user experience.

[0065] When the lock shaft is in the locking position, if the first pull rope is pulled by an external force, exercise and fitness can be achieved. The central shaft can drive the generator to generate electricity and generate rotational damping that is fed back to the first pull rope to achieve exercise and fitness. At the same time, the winding drum rotates to pay out the line and drive the mainspring to tighten. If the force on the first pull rope disappears, the mainspring can release the elastic force to drive the winding drum to reverse and reel in the line, realizing the reset function and facilitating cyclic exercise and fitness.

[0066] By providing a hub, the locking mechanism can be switched between a locked position, which fixes the first and second rotating wheels in a circumferential direction, and an unlocked position, which allows the first and second rotating wheels to rotate relative to each other. This facilitates pulling the first pull rope to achieve exercise or adjust the height of the tension arm. The hub and the fitness machine have a streamlined structure and are easy to operate.

[0067] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 It is a schematic diagram of the three-dimensional structure of a fitness device provided by an embodiment of the present invention.

[0069] Figure 2 It corresponds to Figure 1 Schematic diagram of the hub structure in the fitness equipment.

[0070] Figure 3 It corresponds to Figure 2 The main view of the hub.

[0071] Figure 4 The corresponding edge Figure 3 Cross-sectional view in the AA direction.

[0072] Figure 5 It corresponds to Figure 2 Exploded view of the hub.

[0073] Figure 6 It corresponds to Figure 1 Enlarged schematic diagram of point B in the middle.

[0074] Reference numerals:

[0075] 1-Hub;

[0076] 10-support shaft;

[0077] 12-first rolling bearing;

[0078] 14- second rolling bearing;

[0079] 20-clutch wheel;

[0080] 22- first rotating wheel;

[0081] 222-first hole;

[0082] 224-first winding portion;

[0083] 24- second rotating wheel;

[0084] 242-second hole;

[0085] 244-second winding portion;

[0086] 26-First pull rope;

[0087] 28-Second pull rope;

[0088] 30-lock shaft;

[0089] 32-locking ring;

[0090] 40-flange linear bearing;

[0091] 42-sleeve;

[0092] 422-steel ball inner hole;

[0093] 46-flange wall;

[0094] 50-shaft collar;

[0095] 60-bushing;

[0096] 602-bushing hole;

[0097] 7- Floor;

[0098] 8-Panel;

[0099] 82-support frame;

[0100] 84-guide wheel;

[0101] 86-Tension arm;

[0102] 88-slide rail;

[0103] 9- counterweight power generation mechanism;

[0104] 92-Center axis;

[0105] 94-Bobbin.

[0106] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. DETAILED DESCRIPTION

[0107] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0108] According to one embodiment of the present invention, a fitness device is provided. Figure 1 The fitness machine includes a floor 7, a panel 8, a hub 1 and a counterweight power generation mechanism 9. The floor 7 is structured to support a user so that the user can exercise on it. The floor 7 is bent relative to the panel 8, and the two are L-shaped.

[0109] When the fitness machine is working, the floor 7 is placed horizontally to facilitate the user to exercise on it; the panel 8 protrudes along the height direction Z to facilitate the user to operate the tension arm 86 or observe the panel 8.

[0110] Panel 8 is provided with a support frame 82 and a guide mechanism. The guide mechanism includes a tension arm 86 and a guide wheel 84. The support frame 82 is provided with a guide wheel 84, which is rotatably mounted on the support frame 82. The tension arm 86 is provided with a guide wheel 84, which is rotatably mounted on the tension arm 86.

[0111] One end of the pull arm 86 is movably connected to the support frame 82. The pull arm 86 can be movable relative to the support frame 82 so that the pull arm 86 can be adjusted to a desired height. When the pull arm 86 is adjusted to be located at the desired height, the pull arm 86 and the support frame 82 can be fixed to each other.

[0112] One end of the tension arm 86 is slidably connected to the support frame 82 via a slide rail 88. Specifically, the slide rail 88 is slidably connected to the support frame 82, and the tension arm 86 is fixedly connected to the slide rail 88. When the slide rail 88 slides in the height direction relative to the support frame 82, the tension arm 86 slides accordingly, and the tension arm 86 can be adjusted to a desired height. When the tension arm 86 is adjusted to the desired height, the slide rail 88 is fixedly connected to the support frame 82 using a latch, thereby maintaining the tension arm 86 at the desired height.

[0113] One end of the tension arm 86 is rotatably connected to the support frame 82. As one end of the tension arm 86 rotates relative to the support frame 82, the height of the other end of the tension arm 86 changes accordingly, allowing adjustment to a desired height. When the other end of the tension arm 86 is adjusted to the desired height by rotating one end of the tension arm 86, the tension arm 86 and the support frame 82 can be fastened together via a snap-fit mechanism, circumferentially securing the tension arm 86 to the support frame 82.

[0114] Please refer to Figure 2The hub 1 includes a support shaft 10, a clutch wheel 20, a first pull rope 26, a second pull rope 28, and a locking mechanism. The clutch wheel 20 includes a first rotating wheel 22 and a second rotating wheel 24. The support shaft 10 is mounted on a support frame 82 for supporting and mounting the first rotating wheel 22 and the second rotating wheel 24.

[0115] Please refer to Figure 3 and Figure 4 The first rotating wheel 22 is rotatably mounted on the support shaft 10. A first rolling bearing 12 is disposed between the first rotating wheel 22 and the first support shaft 10. The first rotating wheel 22 is capable of rotating about the support shaft 10. A first winding portion 224 is disposed on the first rotating wheel 22. The outer circumference of the first winding portion 224 is configured to be suitable for winding a pull rope.

[0116] The second rotating wheel 24 is rotatably mounted on the support shaft 10. A second rolling bearing 14 is provided between the second rotating wheel 24 and the support shaft 10. The second rotating wheel 24 can rotate around the support shaft 10.

[0117] The first rotating wheel 22 is axially adjacent to the second rotating wheel 24. A second winding portion 244 is provided on the second rotating wheel 24. The outer circumference of the second winding portion 244 is configured to be suitable for winding a pull rope. The outer circumference of the first winding portion 224 is axially flush with the outer circumference of the second winding portion 244, and together they form the winding portion.

[0118] One end of the first pull rope 26 is connected to the first rotating wheel 22. The first pull rope 26 is partially wound on the winding portion of the clutch rotating wheel 20. The other end of the first pull rope 26 is wound around the guide wheel 84 and passes through the tension arm 86.

[0119] It is understood that the number and specific positions of the guide wheels 84 can be set as needed. They are used to guide the first pull rope 26 so that the first pull rope 26 can be drawn out from the first rotating wheel 22, extend along the desired route into the tension arm 86, and ultimately pass through the tension arm 86. The portion of the first pull rope 26 that passes through the tension arm 86 can be provided with a grip, which can be configured as a ring handle or other structure that can be operated and gripped by the user.

[0120] One end of the second pull rope 28 is connected to the second rotating wheel 24. The second pull rope 28 is partially wound on the winding portion of the clutch rotating wheel 20.

[0121] Please refer to Figure 3 and Figure 4 The first rotating wheel 22 and the second rotating wheel 24 can be axially fixed on the support shaft 10. The first rotating wheel 22 and the second rotating wheel 24 are axially aligned. A shaft collar 50 is provided on the side of the first rotating wheel 22 facing away from the second rotating wheel 24.

[0122] See also Figure 4The locking mechanism is axially slidably connected to the second rotating wheel 24. The locking mechanism can slide axially relative to the second rotating wheel 24 to a locked position or an unlocked position.

[0123] Specifically, see Figure 5 The first rotating wheel 22 is provided with a first hole 222. The first hole 222 is extended along the axial direction of the first rotating wheel 22, and the first hole 222 is offset from the axis of the first rotating wheel 22.

[0124] The second rotating wheel 24 is provided with a second hole 242. The second hole 242 is provided to extend axially along the second rotating wheel 24 and is provided offset from the axis of the second rotating wheel 24. The second hole 242 is provided to axially penetrate the second rotating wheel 24 so that the lock shaft 30 can pass through the second rotating wheel 24.

[0125] The locking mechanism includes a locking shaft 30, a locking ring 32, and an elastic member. The locking ring 32 has a hollow structure. The support shaft 10 extends through the hollow structure of the locking ring 32, and the locking ring 32 surrounds the support shaft 10. The locking ring 32 is radially spaced from the support shaft 10, allowing it to reciprocate along its axial direction.

[0126] The locking ring 32 is disposed on a side of the second rotating wheel 24 facing away from the first rotating wheel 22. The second rotating wheel 24 is located between the locking ring 32 and the first rotating wheel 22.

[0127] The lock shaft 30 protrudes from the axial side surface of the lock ring 32 facing the second rotating wheel 24. The lock shaft 30 is axially slidably inserted into the second hole 242. A clearance is provided between the lock shaft 30 and the second hole 242 to circumferentially fix the lock ring 32 and the second rotating wheel 24, allowing the lock shaft 30 and the second rotating wheel 24 to rotate together about the support shaft 10.

[0128] No matter the locking mechanism is in the locking position or the unlocking position, the locking shaft 30 is inserted into the second hole 242 of the second rotating wheel 24 , and the locking shaft 30 and the locking ring 32 can rotate around the support shaft 10 together with the first rotating wheel 22 .

[0129] The locking shaft 30 can move axially in the second hole 242. According to the distance the locking shaft 30 moves in the second hole 242, the locking shaft 30 can move axially to a locking position or an unlocking position.

[0130] When the lock shaft 30 is axially moved to the locking position, the lock shaft 30 passes through the second hole 242 and the first hole 222, thereby circumferentially fixing the first rotating wheel 22 and the second rotating wheel 24. At this time, the lock mechanism is in the locking position, the first rotating wheel 22 and the second rotating wheel 24 are circumferentially fixed, and the first rotating wheel 22 and the second rotating wheel 24 can rotate together around the support shaft 10.

[0131] When the lock shaft 30 is axially moved to the unlocked position, the lock shaft 30 is at least disengaged from the first hole 222, thereby allowing the first rotating wheel 22 and the second rotating wheel 24 to rotate relative to each other. At this time, the lock mechanism is in the unlocked position, and the first rotating wheel 22 and the second rotating wheel 24 can rotate relative to each other. When one of the first rotating wheel 22 and the second rotating wheel 24 rotates, it will not cause the other to rotate. The first rotating wheel 22 and the second rotating wheel 24 can rotate independently of each other about the support shaft 10.

[0132] See also Figure 4 and Figure 5 The hub 1 may further include a flange linear bearing 40. The flange linear bearing 40 includes a sleeve 42 and a flange wall 46. The sleeve 42 is provided with a steel ball inner hole 422. The flange wall 46 protrudes radially from the outer circumference of the sleeve 42. The flange wall 46 is fixedly connected to the axial end surface of the second rotating wheel 24. The sleeve 42 is inserted into the second hole 242 of the second rotating wheel 24. The lock shaft 30 can be axially slidably inserted into the steel ball inner hole 422 in the second hole 242. The friction resistance between the lock shaft 30 and the steel ball inner hole 422 is small, and the lock shaft 30 can easily move back and forth axially in the steel ball inner hole 422.

[0133] See also Figure 4 and Figure 5 The first hole 222 may be provided with a bushing 60. The bushing 60 is provided with a bushing hole 602. The frictional resistance between the lock shaft 30 and the bushing hole 602 is small, and the lock shaft 30 can easily reciprocate axially in the bushing hole 602, so that the lock shaft 30 can be inserted into the bushing hole 602 or removed from the bushing hole 602.

[0134] When the locking shaft 30 is located at the locking position, the locking shaft 30 passes through the second hole 242 and the bushing hole 602 , thereby circumferentially fixing the first rotating wheel 22 and the second rotating wheel 24 .

[0135] When the lock shaft 30 is located at the unlocking position, the lock shaft 30 is at least separated from the bushing hole 602, so that the first rotating wheel 22 and the second rotating wheel 24 can rotate relative to each other.

[0136] The elastic member is supported by a material with good elastic properties and can be elastically deformed when subjected to external force. The elastic member can be a tension spring arranged between the lock ring 32 and the second rotating wheel 24, or a compression spring arranged between the lock ring 32 and the support frame 82.

[0137] The elastic member can generate elastic deformation, thereby applying an elastic locking force to the locking ring 32 to keep the locking shaft 30 in the locking position.

[0138] When the lock ring 32 is subjected to an external unlocking force, the external unlocking force can overcome the elastic locking force of the elastic member, and the lock ring 32 can be pulled by the external unlocking force and move axially away from the second rotating wheel 24. At the same time, the lock ring 32 can drive the lock shaft 30 to move axially to the unlocking position.

[0139] See also Figure 4 and Figure 5 The support shaft 10 may be provided with a collar 50. The collar 50 is axially fixed to the support shaft 10 and cannot move axially relative to the support shaft 10. The collar 50 is located on the side of the first rotating wheel 22 facing away from the second rotating wheel 24 and is used to stop the first rotating wheel 22 and the second rotating wheel 24, thereby maintaining the first rotating wheel 22 and the second rotating wheel 24 adjacent to each other in the axial direction.

[0140] See also Figure 5 The second rotating wheel 24 may have multiple second holes 242 . The multiple second holes 242 are circumferentially arranged around the second rotating wheel 24 . A lock shaft 30 is inserted into each second hole 242 . The number of first holes 222 on the first rotating wheel 22 is greater than the number of second holes 242 on the second rotating wheel 24 . The multiple first holes 222 are circumferentially arranged around the first rotating wheel 22 . For example, as shown in the figure, the second rotating wheel 24 may have four second holes 242 , and the first rotating wheel 22 may have twelve first holes 222 . In this way, any lock shaft 30 can be easily inserted from the second hole 242 into any first hole 222 .

[0141] Of course, in other embodiments, the second rotating wheel 24 may have only one second hole 242, with a locking shaft 30 inserted into the second hole 242. A locking shaft 30 can be easily inserted through the second hole 242 into any of the first holes 222. The locking ring 32 can also be disposed on the side of the first rotating wheel 22 facing away from the second rotating wheel 24, with the first rotating wheel 22 positioned between the locking ring 32 and the second rotating wheel 24.

[0142] See also Figure 1 and Figure 6 The counterweight generator mechanism 9 includes a central shaft 92, a mainspring, a winding drum 94, and a generator. The central shaft 92 is rotatably connected to the support frame 82. The central shaft 92 is also connected to the generator's motor shaft. For example, the central shaft 92 may be directly connected to the generator's motor shaft or connected via a transmission mechanism, wherein the transmission mechanism and the central shaft 92 are meshed with a gear structure.

[0143] The mainspring and the central shaft 92 can be spaced apart in the axial direction. The winding drum 94 is respectively covered with the mainspring and the central shaft 92. The inner circle of the mainspring is connected to the mounting seat, and the outer circle is connected to the winding drum 94.

[0144] A one-way bearing is provided between the bobbin 94 and the central shaft 92, allowing the bobbin 94 to rotate the central shaft 92 in only one direction. Rotating the bobbin 94 in a first direction causes the central shaft 92 to rotate along with it. Rotating the bobbin 94 in a direction opposite to the first direction does not cause the central shaft 92 to rotate.

[0145] See also Figure 1 and Figure 2 The other end of the second pull rope 28 is connected to the winding drum 94 and is wound around the outer peripheral wall of the winding drum 94.

[0146] Before exercising, the user may move the locking mechanism to the unlocking position, and then adjust the tension arm 86 to slide the tension arm 86 in the height direction relative to the support frame 82 , or rotate one end of the tension arm 86 relative to the support frame 82 .

[0147] When the lock shaft 30 is located at the unlocking position, if one end of the tension arm 86 moves relative to the support frame 82 , the first rotating wheel 22 is driven to rotate via the first pull rope 26 , while the second rotating wheel 24 does not rotate.

[0148] When one end of the pulling arm 86 moves relative to the support frame 82, the second rotating wheel 24 does not rotate, the counterweight power generation mechanism 9 does not work, and the motor shaft of the generator does not generate rotational damping that is fed back to the first pull rope 26, making it easy for the user to adjust the height of the pulling arm 86.

[0149] After the height adjustment of the tension arm 86 is completed, the user can start exercising.

[0150] When the user starts exercising, the tension arm 86 and the support frame 82 are fixed to each other, and the locking mechanism is moved to the locking position. At this time, the user can pull the first pull rope 26 to pull the first pull rope 26 out of the tension arm 86.

[0151] When the lock shaft 30 is in the locking position, if the first pull rope 26 is pulled by the external force applied by the user during exercise, the first pull rope 26 can drive the first rotating wheel 22 and the second rotating wheel 24 to rotate together, and make the first rotating wheel 22 pay out the line and the second rotating wheel 24 reel in the line, and drive the winding drum 94 and the center shaft 92 to rotate together through the second pull rope 28, so that the center shaft 92 drives the generator to generate electricity, and makes the winding drum 94 pay out the line and drive the spring to tighten.

[0152] If the force on the first pull cord 26 is subsequently removed, the mainspring force is released, causing the winding drum 94 to rotate in reverse, causing the winding drum 94 to reel in the line. This, in turn, causes the first and second rotating wheels 22, 24 to rotate in reverse, causing the second rotating wheel 24 to unwind the line and the first rotating wheel 22 to rewind the line. At this point, the central shaft 92 does not rotate during the reversal of the winding drum 94.

[0153] When the first pull cord 26 is pulled by an external force, the generator's motor shaft generates rotational damping, which can be fed back to the first pull cord 26. Only when the external force applied to the first pull cord 26 is sufficient to overcome the rotational damping generated by the generator's motor shaft can the first pull cord 26 be pulled by the user to achieve exercise and fitness functions.

[0154] It should be noted that when the lock shaft 30 is in the locking position, the first rotating wheel 22 and the second rotating wheel 24 are fixed together in the circumferential direction. At this time, no matter whether the first pull rope 26 is in the process of being pulled by an external force or the force disappears, the number of turns of the first pull rope 26 wound on the first rotating wheel 22 will change with time, and the number of turns of the second pull rope 28 wound on the second rotating wheel 24 will change with time; however, the total number of turns of the pull rope wound on the first rotating wheel 22 and the second rotating wheel 24 is always equal and will not change with time.

[0155] The first drawstring 26 can be partially wound around the first winding portion 224 or around both the first winding portion 224 and the second winding portion 244. The second drawstring 28 can be partially wound around the second winding portion 244 or around both the second winding portion 244 and the first winding portion 224.

[0156] After completing the above implementation process, this application has the following practical application effects:

[0157] In the present invention, when the locking mechanism is in the unlocked position, when adjusting the height of the pulling arm, the second rotating wheel does not rotate, the counterweight power generation mechanism does not work, and the motor shaft of the generator does not generate rotational damping that is fed back to the first pull rope, which facilitates the operation of adjusting the height of the pulling arm, saves the user's physical strength, and improves the user experience.

[0158] When the lock shaft is in the locking position, if the first pull rope is pulled by an external force, exercise and fitness can be achieved. The central shaft can drive the generator to generate electricity and generate rotational damping that is fed back to the first pull rope to achieve exercise and fitness. At the same time, the winding drum rotates to pay out the line and drive the mainspring to tighten. If the force on the first pull rope disappears, the mainspring can release the elastic force to drive the winding drum to reverse and reel in the line, realizing the reset function and facilitating cyclic exercise and fitness.

[0159] It can be seen that the product involved in this application can use human power to generate electricity or recycle energy while exercising, which is green, healthy, energy-saving and environmentally friendly.

[0160] By providing a hub, the locking mechanism can be switched between a locked position, which fixes the first and second rotating wheels in a circumferential direction, and an unlocked position, which allows the first and second rotating wheels to rotate relative to each other. This facilitates pulling the first pull rope to achieve exercise or adjust the height of the tension arm. The hub and the fitness machine have a streamlined structure and are easy to operate.

[0161] The power generation device involved in the present application can utilize human power to generate electricity or recycle energy while exercising, which is green, healthy, energy-saving and environmentally friendly.

[0162] It should be understood that the embodiments described are only a portion of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0163] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0164] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0165] It should be understood that in the description of the present invention, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance, and are not used to describe a specific order or sequence.

[0166] The word "if," as used herein, may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0167] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0168] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a more preferred embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the existing technology, can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, control device, or network equipment, etc.) to execute the methods described in various embodiments of the present invention.

[0169] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A hub, characterized in that: include: Support shaft; A clutch wheel, the clutch wheel comprising a first wheel and a second wheel rotatably mounted on the support shaft; a first pull rope, one end of which is connected to the first rotating wheel and is wound around the clutch rotating wheel; a second pull rope, one end of which is connected to the second rotating wheel and is wound around the clutch rotating wheel; and a lock mechanism configured to move to a locked position or an unlocked position; In the locking position, the locking mechanism circumferentially fixes the first rotating wheel and the second rotating wheel; In the unlocked position, the first rotating wheel and the second rotating wheel can rotate relative to each other; The first rotating wheel and the second rotating wheel are axially aligned; The first rotating wheel is provided with a first hole; The first hole is arranged to extend along the axial direction of the first runner and is arranged to deviate from the axis of the first runner; The second rotating wheel is provided with a second hole; The second hole is arranged to extend along the axial direction of the second rotor and is arranged to deviate from the axis of the second rotor; The locking mechanism includes a locking shaft; The lock shaft is configured to be axially movable to the locking position or the unlocking position; In the locking position, the locking shaft is inserted into the second hole and the first hole, thereby circumferentially fixing the first rotating wheel and the second rotating wheel; In the unlocked position, the lock shaft is at least disengaged from the first hole, so that the first rotating wheel and the second rotating wheel can rotate relative to each other; The second hole is provided through the second rotating wheel; The locking mechanism includes a locking ring; The locking ring surrounds the support shaft and is radially spaced apart from the support shaft; The locking ring is arranged on the side of the second rotating wheel facing away from the first rotating wheel; The lock shaft protrudes from one axial side of the lock ring and is axially slidably inserted into the second hole, so that the lock shaft can rotate around the support shaft together with the second rotating wheel.

2. The hub according to claim 1, wherein: Also includes flange linear bearings; The flange linear bearing comprises a sleeve provided with a steel ball inner hole and a flange wall radially protruding from the outer peripheral surface of the sleeve; The flange wall is fixedly connected to the axial end surface of the second runner, and the sleeve is inserted into the second hole; The lock shaft can be axially slidably inserted into the inner hole of the steel ball.

3. The hub according to claim 1, wherein: A plurality of second holes are circumferentially arranged around the second rotating wheel, and the lock shaft is inserted into each of the second holes; The number of the first holes is greater than the number of the second holes, and the plurality of first holes are circumferentially arranged around the first rotating wheel.

4. The hub according to claim 1, wherein: The locking mechanism further includes an elastic member; The elastic member is configured to be elastically deformable, thereby applying an elastic locking force to the locking ring to keep the locking shaft in the locking position; The lock ring is configured to move axially away from the second rotating wheel when subjected to an external unlocking force, and drive the lock shaft to move axially to the unlocking position.

5. The hub according to claim 1, wherein: A shaft collar is sleeved on the support shaft; The collar is axially fixed to the support shaft and is located on a side of the first rotating wheel facing away from the second rotating wheel; A bushing is provided in the first hole, and the bushing is provided with a bushing hole; In the locking position, the locking shaft is inserted into the second hole and the bushing hole, thereby circumferentially fixing the first rotating wheel and the second rotating wheel; In the unlocking position, the lock shaft is at least disengaged from the bushing hole, so that the first rotating wheel and the second rotating wheel can rotate relative to each other in the circumferential direction.

6. The hub according to claim 1, wherein: The first rotating wheel and the second rotating wheel are arranged adjacent to each other in the axial direction; The first rotating wheel is provided with a first winding portion; The second rotating wheel is provided with a second winding portion; The outer circumference of the first winding portion and the outer circumference of the second winding portion are axially flush with each other, and together constitute a winding portion; One end of the first pull rope is connected to the first rotating wheel and is wound on the winding portion; One end of the second pull rope is connected to the second rotating wheel and is wound on the winding portion; A first rolling bearing is provided between the first rotating wheel and the support shaft; A second rolling bearing is provided between the second rotating wheel and the support shaft.

7. A fitness device, characterized in that: include: floor; A panel, wherein a support frame and a guide mechanism are provided on the panel, wherein the guide mechanism includes a tension arm and a guide wheel, wherein one end of the tension arm is movably connected to the support frame, and the guide wheel is mounted on the support frame and the tension arm; The hub according to any one of claims 1 to 6, wherein the support shaft is mounted on the support frame; and A counterweight power generation mechanism, comprising a central shaft, a mainspring, a winding bobbin, and a generator; The central shaft is rotatably connected to the support frame and is connected to the motor shaft of the generator; The winding bobbin is respectively covered on the mainspring and the central shaft; The inner coil of the mainspring is connected to the mounting seat, and the outer coil is connected to the winding drum; A one-way bearing is provided between the winding drum and the central shaft so that the winding drum can only drive the central shaft to rotate in one direction; The other end of the first pull rope is wound around the guide wheel and passes through the outside of the tension arm; The other end of the second pull rope is connected to the winding drum and is wound around the outer peripheral wall of the winding drum.

8. The fitness device according to claim 7, characterized in that: One end of the pulling arm is slidably connected to or rotatably connected to the support frame, so that the height of the other end of the pulling arm can be adjusted to a desired height; In the locked position, when the first pull rope is pulled by an external force, it can drive the first rotating wheel and the second rotating wheel to rotate together, and the first rotating wheel can pay out the line and the second rotating wheel can reel in the line, and the second pull rope can drive the winding drum and the central shaft to rotate together, so that the central shaft drives the generator to generate electricity, so that the winding drum pays out the line and drives the mainspring to tighten; when the force on the first pull rope disappears, the mainspring elastic force is released, thereby driving the winding drum to reverse, so that the winding drum reels in the line, and the first rotating wheel and the second rotating wheel can be driven to reverse together by the second pull rope, so that the second rotating wheel pays out the line and the first rotating wheel reels in the line; In the unlocked position, when one end of the pulling arm moves relative to the supporting frame and drives the first rotating wheel to rotate through the first pull rope, the second rotating wheel does not rotate.

Images