power car

Abstract

The application provides a power car, comprising a frame, a flywheel, a resistance assembly and a stopper, wherein the resistance assembly comprises a wire binding piece, a flexible friction piece and a counterweight piece; the wire binding piece is rotationally arranged on the frame; the flexible friction piece is arranged around the outer periphery of the flywheel and connected to the wire binding piece at both ends; the counterweight piece is connected to the wire binding piece; when the wire binding piece rotates from a first rotation position to a second rotation position, the part of the flexible friction piece arranged around the flywheel is switched from a relaxed state to a tensioned state; the stopper is in a stop state and is in stop cooperation with the wire binding piece at the first rotation position; the wire binding piece rotates from the first rotation position to the second rotation position under the gravity of the counterweight piece when the stopper is in a release state; the power car can not only meet the warm-up movement of the user before the movement power measurement, improve the measurement accuracy of the movement power data of the user, but also does not need the user to disassemble and assemble the counterweight every time the power car is used, thereby improving the user experience of the power car.

Description

Technical Field

[0001] This invention generally relates to the field of sports equipment technology, and specifically to a power vehicle. Background Technology

[0002] A power vehicle is a fitness device used to measure the power output of a person during training. Specifically, it uses sensors to measure the user's exercise power during training. A Chinese patent (CN204275379U) discloses a human exercise power testing vehicle, which has a friction belt wound around a friction wheel. One end of the friction belt is connected to a first loading wheel, and the other end is sequentially wound around the circumferential groove of the friction wheel, a second loading wheel, and then connected to a counterweight. Under the action of the counterweight, the friction belt applies radial pressure to the friction force, causing the friction wheel to generate frictional torque as it rotates, thus enabling the user to perform corresponding load exercises.

[0003] However, the aforementioned human motion power testing vehicle has at least the following problems:

[0004] 1. After each use of the power bike, all counterweights need to be removed to prevent the friction belt from being stretched due to long-term load. This increases the burden on the user when using the power bike and reduces the user experience.

[0005] 2. Before using a power bike, a counterweight needs to be added. After adding the counterweight, the friction belt applies radial pressure to the friction force, causing the user to directly enter a high-load exercise in the initial stage of pedaling. This will result in a larger error in the measurement result of the exercise power when the user does not warm up. Alternatively, in order to ensure the accuracy of the measurement result, the user needs to borrow other exercise equipment to warm up in advance, which increases the burden on the user of the power bike and reduces the user experience. Summary of the Invention

[0006] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a power vehicle.

[0007] This application provides a power vehicle, including:

[0008] frame;

[0009] The flywheel, which rotates, is mounted on the frame;

[0010] The resistance assembly includes a wire harness, a flexible friction element, and a counterweight. The wire harness is rotatably mounted on the frame. The flexible friction element is wound around the outer periphery of the flywheel and connected to the wire harness at both ends. The counterweight is connected to the wire harness. The wire harness has a first rotation position and a second rotation position along a first direction. When the wire harness rotates from the first rotation position to the second rotation position, the portion of the flexible friction element wound around the flywheel switches from a relaxed state to a tensioned state.

[0011] A stop is provided on the frame and has a stop state and a release state. In the stop state, the stop cooperates with the cable tie in the first rotation position to restrict the cable tie from rotating in the first direction. In the release state, the stop cooperation between the stop and the cable tie is released, and the cable tie rotates from the first rotation position to the second rotation position under the gravity drive of the counterweight.

[0012] Furthermore, the wire harness includes a wire harness wheel, which is rotatably mounted on the frame. The wire harness wheel includes a first wheel segment and a second wheel segment. The diameter of the first wheel segment is larger than the diameter of the second wheel segment. The first end of the flexible friction element is wound around the first wheel segment, and the second end of the flexible friction element is wound around the second wheel segment. The winding direction of the flexible friction element by the first wheel segment is opposite to the winding direction of the flexible friction element by the second wheel segment, and the winding direction of the flexible friction element by the first wheel segment is the same as the first direction.

[0013] Furthermore, the stop is rotatably mounted on the frame, the stop has a ferromagnetic part, the stop has a third rotation position, and the frame is also provided with an electromagnet assembly that cooperates with the ferromagnetic part. The magnetic force of the electromagnet assembly can be varied so that the stop in the third rotation position has a fixed state that cannot be rotated and a movable state that can be rotated. In the fixed state, the stop cooperates with the wire harness stop in the first rotation position, wherein the stop state is the fixed state and the release state is the movable state.

[0014] When the stop member is in the movable state, during the process of the wire harness rotating from the first rotation position to the second rotation position, the stop member rotates along the second direction under the drive of the wire harness. And during the process of the wire harness rotating from the second rotation position to the first rotation position in the opposite direction of the first direction, the stop member rotates along the opposite direction of the second direction under the drive of the wire harness.

[0015] Furthermore, it also includes a constraint member disposed between the frame and the stop member. The constraint member is used to constrain the limit rotation position of the stop member in the second direction. The stop member and the wire harness member are engaged by a stop structure, which includes a stop groove and a stop protrusion for the stop engagement, wherein:

[0016] The stop groove is located on the stop member, and the stop protrusion is located on the wire harness member. The groove wall of the stop groove includes a stop groove wall and a guide groove wall arranged opposite to each other. One end of the guide groove wall extends out of the stop groove wall, and when the stop member is in the limit rotation position, the extended end of the guide groove wall is located in the rotation path of the stop protrusion. Alternatively, the stop protrusion is located on the stop member, and the stop groove is located on the wire harness member. The groove wall of the stop groove includes a stop groove wall and a guide groove wall arranged opposite to each other. One end of the guide groove wall extends out of the stop groove wall, and when the stop member is in the limit rotation position, the stop protrusion is located in the rotation path of the extended end of the guide groove wall.

[0017] Furthermore, the constraint element is an elastic element.

[0018] Furthermore, the electromagnet assembly has a bearing surface. When the stop is in the third rotational position, the stop is attracted to the bearing surface by the magnetic attraction of the electromagnet assembly, and the bearing surface and the stop are in a stop engagement in the opposite direction along the second direction.

[0019] Furthermore, it also includes a trigger button and a controller. The controller is connected to both the trigger button and the electromagnet assembly. The trigger button is used to send a trigger signal. The controller is used to control the magnetic force of the electromagnet assembly to decrease from a first set magnetic force to a second set magnetic force after a first preset time from the time the trigger signal is received, so as to control the magnetic force of the electromagnet assembly to rise back to the first set magnetic force after a second preset time from the time the first preset time.

[0020] Furthermore, it also includes a flexible tension member, one end of which is fixed to the wire harness member.

[0021] Furthermore, it also includes a flexible connector, one end of which is connected to the counterweight and the other end of which is connected to the outer peripheral surface of the cable harness, wherein in the first rotational position, a portion of the flexible connector is in contact with the outer peripheral surface of the cable harness.

[0022] Furthermore, the counterweight is adjustable.

[0023] The power cart provided in this application not only allows users to warm up before measuring exercise power without needing to borrow other exercise equipment, thus improving the accuracy of exercise power data measurement, but also eliminates the need for users to disassemble and reassemble the counterweights each time they use the power cart, thus reducing the user's operational burden and improving the user experience of the power cart, while preventing the flexible friction parts from lengthening due to long-term stretching of the counterweights. Attached Figure Description

[0024] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 A perspective view of a hand-cranked power vehicle provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the resistance device in a hand-cranked power vehicle provided in an embodiment of this application;

[0027] Figure 3 A schematic diagram of the stop member provided in the embodiment of this application when it is in the third rotational position;

[0028] Figure 4 A schematic diagram showing the stopper and the wire harness stopper engaging in an embodiment of this application;

[0029] Figure 5 A perspective view of a cycling power vehicle provided in an embodiment of this application;

[0030] Figure 6 This is a partial structural schematic diagram of a cycling power vehicle provided in an embodiment of this application. Detailed Implementation

[0031] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0032] Please refer to the attached document. Figure 1 and 5 This application provides a power vehicle for measuring a user's exercise power. The power vehicle can be a hand-cranked power vehicle or a bicycle power vehicle, etc. In the above-mentioned hand-cranked power vehicles or bicycle power vehicles, the principle and structure of the resistance device that applies resistance to the flywheel 200 are the same, so the present invention will be described below using a hand-cranked power vehicle as an example.

[0033] Please refer to the attached document. Figure 1-4 The power vehicle provided in this application embodiment includes a frame 100, a flywheel 200, and a resistance device. The resistance device includes a resistance component and a stop 300. The flywheel 200 is rotatably mounted on the frame 100. The resistance component includes a cable harness, a flexible friction element 430, and a counterweight 420. The cable harness is rotatably mounted on the frame 100. The flexible friction element 430 is wrapped around the outer periphery of the flywheel 200 and both ends are connected to the cable harness. The counterweight 420 is connected to the cable harness. The stop 300 is mounted on the frame 100.

[0034] The cable harness has a first rotational position and a second rotational position along a first direction. When the cable harness rotates from the first rotational position to the second rotational position along the first direction, the portion of the flexible friction member 430 wound around the flywheel 200 (hereinafter referred to as the wound portion 431) switches from a relaxed state to a tensioned state. When the cable harness rotates from the second rotational position to the first rotational position in the opposite direction of the first direction, the wound portion 431 switches from a tensioned state to a relaxed state. Here, the first direction can be a clockwise direction or a counterclockwise direction. When the winding portion 431 is in the relaxed state, there is slight contact between the winding portion 431 and the flywheel 200, and the rotational friction resistance exerted by the flexible friction element 430 on the rotating flywheel 200 is very small. When the winding portion 431 is in the tensioned state, driven by the counterweight 420, the winding portion 431 is in close contact with the outer circumferential surface of the flywheel 200 and applies a large radial pressure to the flywheel 200, causing the flexible friction element 430 to apply a large rotational friction resistance to the rotating flywheel 200, thereby enabling the user to perform the required load movement. When the winding portion 431 is in the tensioned state, the user's movement on the power vehicle is called power test movement.

[0035] The stop member 300 has a stopped state and a released state, and can switch between the two states. In the stopped state, the stop member 300 engages with the cable tie in the first rotation position to restrict the cable tie from rotating in the first direction, that is, to stop the cable tie in the first rotation position and prevent it from rotating to the second rotation position. At this time, the winding portion 431 is in a relaxed state, and the user can complete the warm-up exercise by driving the flywheel 200 to rotate. The purpose of the warm-up exercise is to mobilize the user's physical functions and reach a stable state before conducting the exercise power measurement. In the released state, the stop member 300 is released from the stop engagement with the cable tie, and the cable tie is in a state where it can rotate in the first direction. Under the gravity drive of the counterweight 420, the cable tie rotates from the first rotation position to the second rotation position. At this time, the winding portion 431 gradually changes from a relaxed state to a tensioned state. The stop 300 is initially in a stop state. After the user completes warm-up exercises using the power cart, the stop 300 immediately switches from the stop state to the release state, allowing the user to immediately begin power testing exercises after warm-up. The power cart measures the power test exercises to obtain the user's exercise power data, and the measured data is highly accurate. After using the power cart, the user only needs to switch it from the second rotation position to the first rotation position by driving the cable harness, and the stop 300 switches back to the stop state when the cable harness returns to the first rotation position. There is no need for the user to remove the weights after using the power cart or reinstall the weights before using the power cart again.

[0036] In this embodiment, the power cart not only allows users to warm up before measuring exercise power without needing to use other exercise equipment, thus improving the accuracy of the user's exercise power data, but also prevents the flexible friction component 430 from elongating due to the long-term stretching of the counterweight component 420. This eliminates the need for users to disassemble and reassemble the counterweights each time they use the power cart, reducing the user's operational burden and improving the user experience.

[0037] In order to prevent the flexible friction element 430 from easily detaching from the flywheel 200, the outer peripheral surface of the flywheel 200 is provided with a groove 210, and by selecting a reasonable length of the winding portion 431, the winding portion 431 in the relaxed state can be basically constrained in the groove 210.

[0038] Among them, the flexible friction element 430 can be a flexible friction belt or a flexible friction rope, such as, but not limited to, nylon rope, etc.

[0039] In order to improve the friction between the flexible friction component 430 and the flywheel 200, the outer peripheral surface of the flywheel 200 can be roughened so that the outer peripheral surface of the flywheel 200 is uneven.

[0040] Among them, the stop member 300 can be, but is not limited to, a plate-like structure or a rod-like structure.

[0041] In some embodiments of this application, the wire harness includes a wire harness wheel 410, which is rotatably mounted on the frame 100. The wire harness wheel 410 includes a first wheel segment 411 and a second wheel segment 412, which are arranged along the axial direction of the wire harness wheel 410. The diameter of the first wheel segment 411 is larger than the diameter of the second wheel segment 412. A first end of a flexible friction member 430 is wound around the first wheel segment 411, and a second end of the flexible friction member 430 is wound around the second wheel segment 412. The winding direction of the flexible friction member 430 by the first wheel segment 411 is opposite to the winding direction of the flexible friction member 430 by the second wheel segment 412, and the winding direction of the flexible friction member 430 by the first wheel segment 411 is the same as the first direction.

[0042] In this embodiment, by connecting both ends of the flexible friction member 430 to the first wheel segment 411 and the second wheel segment 412, when the cable pulley 410 rotates, the first wheel segment 411 and the second wheel segment 412 operate on the flexible friction member 430 in different states (one winds up the flexible friction member 430 while the other releases it). Furthermore, the amount of release or winding of the flexible friction member 430 by the first wheel segment 411 is greater than the amount of winding or releasing by the second wheel segment 412, thus changing the length of the winding portion 431 and allowing the winding portion 431 to switch between a relaxed state and a tensioned state. The cable harness structure provided in this embodiment is simple and easy to implement.

[0043] Furthermore, when the cable harness rotates from the first rotation position to the second rotation position, the first wheel segment 411 is winding up the flexible friction element 430, and the second wheel segment 412 is releasing the flexible friction element 430 (the amount of winding up the flexible friction element 430 by the first wheel segment 411 is greater than the amount of releasing the flexible friction element 430 by the second wheel segment 412). This allows the flexible friction element 430 to have more displacement during the tensioning process around the flywheel 200, making the process of applying resistance to the flywheel 200 by the flexible friction element 430 more gentle. This, in turn, makes the power bike have a better protective effect when the user switches from warm-up exercise to power test exercise.

[0044] The cable tie 410 includes a first segment 411, a second segment 412, and at least one third segment 413. The third segment 413 is located between or on one side of the first and second segments 411 and 412. A counterweight 420 is connected to the outer peripheral surface of the third segment 413 via a flexible connector 423. Specifically, one end of the flexible connector 423 is connected to the counterweight 420, and the other end is connected to the outer peripheral surface of the third segment 413. In the first rotational position, a portion of the flexible connector 423 is in contact with the outer peripheral surface of the cable tie. Preferably, there are at least two third segments 413, located on either side of the first and second segments 411 and 412. The counterweight 420 is connected to at least two third segments 413 by at least two flexible connectors 423 respectively, thereby increasing the reliability of the counterweight 420 when moving between the first and second rotational positions.

[0045] The wire harness wheel 410 can be fixedly sleeved on the outer periphery of a rotating shaft, and the rotating shaft is rotatably mounted on the frame 100, so that the wire harness wheel 410 is rotatably connected to the frame 100; or, the wire harness wheel 410 can be movably sleeved on the outer periphery of a support shaft 130, and the support shaft 130 is fixed to the frame 100, so that the wire harness wheel 410 is rotatably connected to the frame 100.

[0046] In some embodiments of this application, the stop member 300 is rotatably disposed on the frame 100, the stop member 300 is provided with a ferromagnetic part 310, and the stop member 300 has a third rotational position along the rotation direction. The frame 100 is also provided with an electromagnet assembly 110 that cooperates with the ferromagnetic part 310. The magnetic force of the electromagnet assembly 110 is variable, allowing the stop member 300 in the third rotational position to have both a fixed, non-rotatable state and a movable, rotatable state. Specifically, when the magnetic force of the electromagnet assembly 110 reaches a first set magnetic force, the electromagnet assembly 110 and the ferromagnetic portion 310 on the stop member 300 in the third rotational position are magnetically attracted together. The magnetic force applied by the electromagnet assembly 110 to the ferromagnetic portion 310 allows the stop member 300 to overcome the rotational driving force, including the force applied to the stop member 300 by the wire harness that engages with the stop member 300, thus fixing the stop member 300 in the third rotational position and preventing it from rotating. When component 300 is in a fixed state, the stopping state of the stop component 300 is consistent with the fixed state. When the magnetic force of the electromagnet assembly 110 decreases to a second set magnetic force, which is less than the first set magnetic force, the magnetic force applied by the electromagnet assembly 110 to the ferromagnetic part 310 is insufficient for the stop component 300 to overcome the rotational driving force. This allows the stop component 300 to rotate under the drive of the rotational driving force, thereby releasing the stopping effect of the stop component 300 on the cable tie. The cable tie can then rotate from the first rotational position to the second rotational position under the drive of the counterweight 420. In other words, the stop component 300 is in a movable state at this time, and the released state of the stop component 300 is consistent with the movable state. After the magnetic force of the electromagnet assembly 110 decreases from the first set magnetic force to the second set magnetic force, it needs to return to the first set magnetic force after a short time so that the position of the stop component 300 is fixed when it rotates to the third rotational position.

[0047] When the stop member 300 is in a movable state, during the process of the wire harness rotating from the first rotation position to the second rotation position, the stop member 300 rotates under the drive of the wire harness, and at this time the rotation direction of the stop member 300 is the second direction. During the process of the wire harness rotating from the second rotation position to the first rotation position in the opposite direction of the first direction, the stop member 300 rotates in the opposite direction of the second direction under the drive of the wire harness. When the wire harness moves to the first rotation position, the stop member 300 is in the third rotation position.

[0048] In this embodiment, the above-mentioned settings enable the power vehicle to be used only by the user driving the wiring harness to rotate in the opposite direction of the first direction after each use. When the wiring harness can no longer rotate in the opposite direction of the first direction, the stop 300 is already in the stop state and forms a stop engagement with the wiring harness, that is, the resistance component is reset. This makes the reset operation of the resistance component in the power vehicle simple and convenient, and improves the user experience.

[0049] The first and second set magnetic forces can be reasonably set according to the actual magnitude of the rotational driving force, and this application does not impose any particular limitation on them. Preferably, the second set magnetic force is 0, that is, the electromagnet assembly 110 is de-energized.

[0050] It should be understood that when the magnetic force of the electromagnet assembly 110 returns to the first set magnetic force, because the stop member 300 has rotated a certain angle from the third rotation position along the second direction, a certain distance exists between the electromagnet assembly 110 and the ferromagnetic part 310. This distance results in a weaker magnetic force applied by the electromagnet assembly 110 to the ferromagnetic part 310 at the current position, making it impossible to magnetically attract the stop member 300 back to the third rotation position. To avoid magnetic interference from the electromagnet assembly 110 and to facilitate smoother rotation from the third rotation position along the second direction, the stop member 300 can be configured as an eccentric structure, such as having its center of gravity located on the side of its rotation axis closer to the cable tie.

[0051] The stop 300 is rotatably connected to the frame 100 via the first rotating shaft 140.

[0052] Of course, in other embodiments, the cooperation method between the wire harness and the stop 300 is not limited to the above. For example, the end face of the wire harness is provided with a stop hole, the stop 300 is located on one side of the axial direction of the wire harness, the stop 300 is slidably disposed on the frame 100 along the axial direction of the wire harness, and the frame 100 is provided with a linear driver. The linear driver is drivenly connected to the stop 300. When the stop 300 is in the stop state, the stop 300 is inserted into the stop hole when the wire harness is in the first rotation position under the drive of the linear driver, so as to restrict the rotation of the wire harness. When the stop is in the release state, the stop 300 is withdrawn from the stop hole under the drive of the linear driver. At this time, the wire harness can rotate in the first direction.

[0053] In some embodiments of this application, the power vehicle further includes a constraint member disposed between the frame 100 and the stop member 300. The constraint member is used to constrain the stop member 300 to its limit rotational position in the second direction. The stop member 300 and the wiring harness member are engaged by a stop structure, which includes a stop groove 330 and a stop protrusion 414 for the stop engagement, wherein:

[0054] The stop groove 330 is located on the stop member 300, and the stop protrusion 414 is located on the wire harness member. The groove wall of the stop groove 330 includes a stop groove wall 331 and a guide groove wall 332 arranged opposite to each other. A receiving space 333 is formed between the guide groove wall 332 and the stop groove wall 331 for the stop protrusion 414 to enter. One end of the guide groove wall 332 extends out of the stop groove wall 331, that is, it extends out of the receiving space 333. And when the stop member 300 is in the extreme rotation position, the extended end of the guide groove wall 332 is located in the rotation path of the stop protrusion 414. With this configuration, when the stop member 300 is in a fixed state, the stop protrusion 414 on the cable tie forms a stop contact with the stop groove wall 331. Under the stopping action of the stop groove wall 331, the stop protrusion 414 restricts the cable tie to the first rotation position, at which time the cable tie cannot rotate in the first direction. When the stop member 300 is in a movable state, when the cable tie rotates from the first rotation position to the second rotation position, the stop protrusion 414 drives the stop groove wall 331 to move, thereby driving the stop member 300 to rotate in the second direction until the stop protrusion 414 is removed from the receiving space 333. The final position of the stop member 300 rotating in the second direction under the drive of the cable tie can be the aforementioned extreme rotation position. During the process of the wire harness rotating from the second rotation position to the first rotation position in the opposite direction of the first direction, since the protruding end of the guide groove wall 332 is located in the rotation path of the stop protrusion 414, the stop protrusion 414 will push and cooperate with the protruding end of the guide groove wall 332 during the rotation to drive the stop member 300 to rotate in the opposite direction of the second direction. Furthermore, during the process of driving the stop member 300 to rotate, the stop protrusion 414 will move to the accommodating space 333 under the guidance of the guide groove wall 332.

[0055] Alternatively, the stop protrusion 414 is located on the stop member 300, and the stop groove 330 is located on the wire harness member. The groove wall of the stop groove 330 includes a stop groove wall 331 and a guide groove wall 332 arranged opposite to each other. A receiving space 333 is formed between the stop groove wall 331 and the guide groove wall 332 for the stop protrusion 414 to enter. One end of the guide groove wall 332 extends out of the stop groove wall 331, and when the stop member 300 is in the extreme rotation position, the stop protrusion 414 is located in the rotation path of the extended end of the guide groove wall 332. With this configuration, when the stop member 300 is in a fixed state, the stop protrusion 414 and the stop groove wall 331 form a stop contact. Under the stopping action of the stop protrusion 414, the stop groove wall 331 restricts the wire harness to the first rotation position, at which time the wire harness cannot rotate in the first direction. When the stop member 300 is in a movable state, when the wire harness rotates from the first rotation position to the second rotation position, the stop groove wall 331 drives the stop protrusion 414 to move, thereby driving the stop member 300 to rotate in the second direction until the stop protrusion 414 is disengaged from the receiving space 333. The final position of the stop member 300 rotating in the second direction under the drive of the wire harness can be the aforementioned limit rotation position. During the process of the wire harness rotating from the second rotation position to the first rotation position in the opposite direction of the first direction, since the stop protrusion 414 is located in the rotation path of the protruding end of the guide groove wall 332, the protruding end of the guide groove wall 332 will push and cooperate with the stop protrusion 414 during the rotation to drive the stop member 300 to rotate in the opposite direction of the second direction, and the stop protrusion 414 will move to the accommodating space 333 under the guidance of the guide groove wall 332.

[0056] The constraint element can be an elastic element 440, such as a spring. Of course, in other embodiments, the constraint element can also be a rigid structure, such as an anti-rotation block. The anti-rotation block is disposed between the stop 300 and the frame 100. At the extreme rotation position, the anti-rotation block and the stop 300 abut against each other to restrict the stop 300 from continuing to rotate in the second direction.

[0057] Preferably, please refer to the appendix. Figure 1-4The stop groove 330 is located at the end of the stop member 300 near the wire harness member. The stop groove 330 has an opening on the side away from the rotation axis of the stop member 300, and the opening extends to the side of the stop member 300 away from the guide groove wall 332. The stop protrusion 414 is located on the end face of the wire harness member. The stop member 300 is inclined relative to the vertical direction, and the end of the stop member 300 near the wire harness member is higher than the other end away from the wire harness member. The stop member 300 has an eccentric structure, and the center of gravity of the stop member 300 is located on the side of the rotation axis of the stop member 300 near the wire harness member. The ferromagnetic part 310 is located at the end of the stop 300 away from the wire harness. The electromagnet assembly 110 is located below the ferromagnetic part 310 and has a bearing surface. When the stop 300 is in the third rotation position, the stop 300 is attracted to the bearing surface by the magnetic attraction of the electromagnet assembly 110. The bearing surface and the stop 300 are in a stop engagement in the opposite direction of the second direction to restrict the stop 300 from rotating in the opposite direction of the second direction. That is, the third rotation position is the initial position of the stop 300 rotating in the second direction. The constraint member is a spring. The stop 300 is provided with a first connecting post 320, and the frame 100 is provided with a second connecting post 120. The two ends of the spring are respectively connected to the first connecting post 320 and the second connecting post 120. At the limit rotation position, the stop 300 is held in position by the action of the spring to prevent the stop 300 from exceeding the limit rotation position under its own weight. The first direction is opposite to the second direction and is based on the attachment Figure 4 From this perspective, the first direction is counterclockwise, and the second direction is clockwise.

[0058] In some embodiments of this application, the power vehicle further includes a trigger button and a controller. The controller is connected to both the trigger button and the electromagnet assembly 110. The trigger button is used to send a trigger signal. The controller is used to control the magnetic force of the electromagnet assembly 110 to decrease from a first set magnetic force to a second set magnetic force after a first preset time from the time the trigger signal is received, so as to control the magnetic force of the electromagnet assembly 110 to rise back to the first set magnetic force after a second preset time from the time the first preset time.

[0059] Both the first and second preset times can be set reasonably according to actual usage needs. For example, the first preset time can be 20-60 seconds, which is the warm-up exercise time. The second preset time is preferably shorter than the power test exercise time, such as 20-30 seconds.

[0060] In some embodiments of this application, a flexible pulling member 424 is also included. One end of the flexible pulling member 424 is fixed to the wire harness. The flexible pulling member 424 allows the user to pull the wire harness from the second rotation position back to the first rotation position.

[0061] Among them, the flexible tensioning component 424 can be a flexible rope or a flexible belt.

[0062] In some embodiments of this application, the counterweight 420 is adjustable, meaning its weight can be increased or decreased. When the weight of the counterweight 420 changes, it alters the rotational resistance of the flywheel 200, thereby changing the user's resistance during power testing and meeting the user's needs for power testing under different resistance levels.

[0063] The counterweight 420 includes a support frame 421 and counterweight plates 422. Users can adjust the number of counterweight plates 422 located on the support frame 421 to adjust the counterweight of the counterweight 420.

[0064] Please continue to refer to the appendix. Figure 5-6 In some embodiments of this application, the power vehicle also includes a flywheel 200 drive device, which is disposed on the frame 100. When the power bike is a hand-cranked power bike, the flywheel 200 drive device includes a rotating shaft 540, a transmission assembly, and two hand-crank structures. Each hand-crank structure includes a connecting arm 510 and a crank handle 520. One end of the connecting arm 510 is connected to the end of the rotating shaft 540, and the other end is connected to the crank handle 520. The rotating shaft 540 is rotatably mounted on the frame 100. The rotating shaft 540 and the flywheel 200 shaft are connected by a transmission assembly. The two hand-crank structures are respectively installed at both ends of the rotating shaft 540. When the power bike is a riding power bike, the flywheel 200 drive device includes a rotating shaft 540, a transmission assembly, and two pedal structures. Each pedal structure includes a connecting arm 510 and a pedal 530. One end of the connecting arm 510 is connected to the end of the rotating shaft 540, and the other end is connected to the pedal. The rotating shaft 540 is rotatably mounted on the frame 100. The rotating shaft 540 and the flywheel 200 shaft are connected by a transmission assembly. The two pedal structures are respectively installed at both ends of the rotating shaft 540.

[0065] The transmission assembly can be, but is not limited to, a chain drive assembly or a belt drive assembly. Preferably, the transmission assembly is a chain drive assembly, specifically including two gears 550 and a transmission chain 560. The two gears 550 are respectively mounted on the rotating shaft 540 and the flywheel 200 shaft, and the transmission chain 560 is mounted on the two gears 550.

[0066] In addition, the power vehicle is equipped with measuring devices such as speed sensors, timers, and heart rate sensors. These devices measure data such as flywheel speed, acceleration, exercise time, and user heart rate, and calculate the user's exercise power data based on the collected data.

[0067] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise stated, "a plurality of" means three or more.

[0068] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A power vehicle, characterized in that, include: frame; A flywheel, which is rotatably mounted on the frame; A resistance assembly includes a wire harness, a flexible friction element, and a counterweight. The wire harness is rotatably mounted on the frame. The flexible friction element is wound around the outer periphery of the flywheel and connected to the wire harness at both ends. The counterweight is connected to the wire harness. The wire harness has a first rotational position and a second rotational position along a first direction. When the wire harness rotates from the first rotational position to the second rotational position, the portion of the flexible friction element wound around the flywheel switches from a relaxed state to a tensioned state. A stop member is provided on the frame and has a stopped state and a released state. In the stopped state, the stop member cooperates with the wire harness in the first rotational position to restrict the wire harness from rotating in the first direction. In the released state, the stop member releases the stop cooperation with the wire harness, and the wire harness rotates from the first rotational position to the second rotational position under the gravity drive of the counterweight. The wire harness includes a wire harness wheel, which is rotatably disposed on the frame. The wire harness wheel includes a first wheel segment and a second wheel segment, the diameter of the first wheel segment being larger than the diameter of the second wheel segment. A first end of a flexible friction member is wound around the first wheel segment, and a second end of the flexible friction member is wound around the second wheel segment. The winding direction of the first wheel segment on the flexible friction element is opposite to the winding direction of the second wheel segment on the flexible friction element, and the winding direction of the first wheel segment on the flexible friction element is the same as the first direction. The stop member is rotatably disposed on the frame. The stop member is provided with a ferromagnetic part. The stop member has a third rotation position. The frame is also provided with an electromagnet assembly that cooperates with the ferromagnetic part. The magnetic force of the electromagnet assembly can be varied so that the stop member located in the third rotation position has a fixed state that cannot be rotated and a movable state that can be rotated. In the fixed state, the stop member cooperates with the stop of the wire harness located in the first rotation position. The stop state is the fixed state, and the release state is the movable state. Specifically, when the stop member is in the movable state, during the process of the wire harness rotating from the first rotation position to the second rotation position, the stop member rotates along the second direction under the drive of the wire harness, and during the process of the wire harness rotating from the second rotation position to the first rotation position in the opposite direction of the first direction, the stop member rotates in the opposite direction of the second direction under the drive of the wire harness.

2. The power vehicle according to claim 1, characterized in that, It also includes a constraint member disposed between the frame and the stop member. The constraint member is used to constrain the stop member to its limit rotational position in the second direction. The stop member and the wire harness member are engaged by a stop structure, the stop structure including a stop groove and a stop protrusion, wherein: The stop groove is located on the stop member, and the stop protrusion is located on the wire harness member. The groove wall of the stop groove includes a stop groove wall and a guide groove wall arranged opposite to each other. One end of the guide groove wall extends out of the stop groove wall, and when the stop member is in the limit rotation position, the protruding end of the guide groove wall is located in the rotation path of the stop protrusion. Alternatively, the stop protrusion is located on the stop member, and the stop groove is located on the wire harness member. The groove wall of the stop groove includes a stop groove wall and a guide groove wall arranged opposite to each other. One end of the guide groove wall extends out of the stop groove wall, and when the stop member is in the limit rotation position, the stop protrusion is located in the rotation path of the protruding end of the guide groove wall.

3. The power vehicle according to claim 2, characterized in that, The constraint element is an elastic element.

4. The power vehicle according to claim 1, characterized in that, The electromagnet assembly has a bearing surface. When the stop member is in the third rotational position, the stop member is attracted to the bearing surface by the magnetic attraction of the electromagnet assembly, and the bearing surface and the stop member are in a stop-locking engagement in the opposite direction of the second direction.

5. The power vehicle according to claim 1, characterized in that, It also includes a trigger button and a controller. The controller is connected to both the trigger button and the electromagnet assembly. The trigger button is used to send a trigger signal. The controller is used to control the magnetic force of the electromagnet assembly to decrease from a first set magnetic force to a second set magnetic force after a first preset time from the time the trigger signal is received, and to control the magnetic force of the electromagnet assembly to rise back to the first set magnetic force after a second preset time from the time the first preset time.

6. The power vehicle according to claim 1, characterized in that, It also includes a flexible tension member, one end of which is fixed to the wire harness member.

7. The power vehicle according to claim 1, characterized in that, It also includes a flexible connector, one end of which is connected to the counterweight and the other end of which is connected to the outer peripheral surface of the wire harness, wherein in the first rotational position, a portion of the flexible connector is in contact with the outer peripheral surface of the wire harness.

8. The power vehicle according to claim 1, characterized in that, The counterweight is adjustable.

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