CN220833981U

CN220833981U - Body-building equipment

Info

Publication number: CN220833981U
Application number: CN202322245478.8U
Authority: CN
Inventors: 刘涛
Original assignee: Ningbo Daokang Intelligent Technology Co ltd
Current assignee: Ningbo Daokang Intelligent Technology Co ltd
Priority date: 2022-08-25
Filing date: 2023-08-18
Publication date: 2024-04-26
Anticipated expiration: 2033-08-18

Abstract

The utility model discloses an exercise device, which comprises a device frame, a stress device, at least one middle section resistance device and a final section resistance device, wherein the stress device, the middle section resistance device and the final section resistance device are respectively arranged on the device frame, the stress device, the middle section resistance device and the final section resistance device are arranged in series, and the final section resistance device provides continuously adjustable magnetic resistance.

Description

Body-building equipment

Technical Field

The utility model relates to the field of body building, in particular to body building equipment.

Background

Exercise equipment that is loaded by a weight block is very popular in the market. Typically, the weight is made of metal cast or filled with cement inside a metal housing, which requires standard weight specifications for the weight, such as, but not limited to, 0.5kg, 1kg, 2kg, 5kg, which provides a load based on its own weight when the user exercises with the exercise machine. The existing fitness equipment has the defects that the mode that the balancing weight provides load is as follows:

First, to provide exercise equipment with a greater load adjustment range, existing exercise equipment is often configured with multiple weights that are stacked in the height direction, which results in exercise equipment having a greater volume that requires more space, and for increasingly crowded urban environments, exercise equipment having a greater volume is increasingly unsuitable for use in a home environment.

Second, existing exercise equipment requires the user to adjust the overall load of the user when exercising with the exercise equipment by adjusting the number of weights that can provide the load, which can not be accurately adjusted by the user when exercising with the exercise equipment because each weight has a standard weight specification. In other words, the existing exercise apparatus is adjusted in a jump-type manner, which results in a user not being able to accurately adjust the overall load while exercising with the exercise apparatus.

Again, existing fitness equipment generally allows a user to select the number of weights that can provide a load using a latch structure, when the user applies a pulling force to the selected weights to raise their positions, a large space is formed between the selected and lifted weights and the unselected weights, after the user withdraws the pulling force applied to the selected weights, the selected and lifted weights quickly descend based on their own weight, in the process, if on one hand, foreign matters are suddenly present in the space between the selected and lifted weights and the unselected weights, the foreign matters and the user are easily damaged, and on the other hand, when the selected and lifted weights descend to a position contacting the unselected weights, collision occurs between the two to generate noise and vibration, affecting the fitness environment and the surrounding environment.

Disclosure of utility model

It is an object of the present utility model to provide an exercise apparatus in which the exercise apparatus does not need to be configured with a weight so that the exercise apparatus can have a smaller volume.

It is an object of the present utility model to provide an exercise apparatus wherein the exercise apparatus allows the overall load to be adjusted in a continuous adjustment to precisely adjust the overall load of the exercise apparatus.

It is an object of the present utility model to provide an exercise apparatus in which the body portion of the exercise apparatus can be concealed within the interior of the enclosure to reduce the risk of the sudden appearance of foreign matter.

It is an object of the present utility model to provide an exercise apparatus that is quieter and nearly free of vibration when in use.

It is an object of the present utility model to provide an exercise apparatus wherein the exercise apparatus provides a force device, at least one mid-section resistance device and a final section resistance device, the force device, mid-section resistance device and final section resistance device being arranged in series and the final section resistance device providing continuously adjustable reluctance resistance to provide a greater range of adjustment of the overall load of the exercise apparatus.

It is an object of the present utility model to provide an exercise apparatus wherein the midsection resistance means provides continuously adjustable reluctance resistance to fine tune the overall load of the exercise apparatus so that the overall load of the exercise apparatus can be accurately adjusted.

It is an object of the present utility model to provide an exercise apparatus in which the body portion of the exercise apparatus (e.g., the force-receiving device, the mid-section resistance device, and the end-section resistance device) can be positioned below the body of the user while the user is exercising using the exercise apparatus, e.g., the user can ride on the body portion of the exercise apparatus or the user can stand above the exercise apparatus to increase the stability of the user while exercising using the exercise apparatus.

According to one aspect of the present utility model, there is provided exercise apparatus comprising an apparatus frame and a force-bearing device, at least one middle section resistance device and a final section resistance device respectively disposed on the apparatus frame, wherein the force-bearing device, the middle section resistance device and the final section resistance device are disposed in series, and the final section resistance device provides continuously adjustable reluctance resistance.

According to one embodiment of the utility model, the midsection resistance apparatus provides a continuously adjustable reluctance resistance.

According to one embodiment of the utility model, the end drag device comprises an end flywheel having an end flywheel space and an end internal magnetic control device suspended from the end flywheel space of the end flywheel and providing a continuously adjustable magnetic field environment, wherein the end flywheel cuts lines of magnetic induction of the end internal magnetic control device to provide reluctance drag when the end flywheel is driven into rotation relative to the end internal magnetic control device.

According to one embodiment of the utility model, the end flywheel comprises an end wheel body, an end wheel shaft and an end wheel rim, wherein the end wheel shaft integrally extends outwards from the middle of one side of the end wheel body, the end wheel rim integrally extends outwards from the edge of the other side of the end wheel body, and the end flywheel space is formed between the end wheel body and the end wheel rim.

According to one embodiment of the utility model, the mid-section resistance means comprises a mid-section flywheel, the mid-section flywheel being drivably connected to the force-receiving means, the end-section flywheel being drivably connected to the mid-section flywheel.

According to one embodiment of the present utility model, the middle flywheel comprises a middle wheel body, a middle wheel shaft and a middle wheel rim, the middle wheel shaft integrally extends outwards from the middle part of one side of the middle wheel body, the middle wheel rim integrally extends outwards from the periphery of the other side of the middle wheel body, wherein the middle wheel shaft of the middle flywheel is drivably connected to the stress device, and the end wheel shaft of the end flywheel is drivably connected to the middle wheel rim of the middle flywheel.

According to one embodiment of the present utility model, the midsection flywheel has a midsection flywheel space formed between the midsection flywheel body and the midsection rim, wherein the midsection resistance device further comprises a midsection internal magnetic control device suspended from the midsection flywheel space of the midsection flywheel and providing a continuously adjustable magnetic field environment, wherein the midsection flywheel cuts a magnetic induction line of the midsection internal magnetic control device to provide reluctance resistance to the midsection resistance device when the midsection flywheel is driven to rotate relative to the midsection internal magnetic control device.

According to one embodiment of the utility model, the end-in magnetic control device comprises a housing, a drive unit, at least one curved swing arm and at least one magnet, wherein the housing has an inner space, a peripheral opening surrounding the inner space and at least one communication channel communicating the inner space and the peripheral opening, wherein the swing arm has a pivoting end and a driven end corresponding to the pivoting end, the pivoting end of the swing arm is rotatably mounted on one side of an edge of the housing, the driven end of the swing arm is swingably provided on the other side of the edge of the housing, the magnet is provided on the swing arm, wherein the drive unit comprises a drive wheel and at least one connecting element, the drive wheel is rotatably provided on the housing, a middle part of the connecting element is movably provided on the communication channel of the housing, and one end of the connecting element is connected to the drive wheel, and the other end is connected to the driven end of the swing arm.

According to one embodiment of the utility model, the connecting element is rigid, one end of the connecting element being rotatably mounted to the driving wheel and the other end being rotatably mounted to the driven end of the swing arm.

According to one embodiment of the utility model, the swing arm comprises an arm body and at least one side wall convexly arranged on the side edge of the arm body, the magnet is arranged on the arm body, and at least one part of the side edge of the magnet is shielded by the side wall.

According to one embodiment of the utility model, the swing arm comprises two side walls, one side wall is respectively arranged on two opposite sides of the arm body, so that a positioning groove is formed between the arm body and the two side walls, and the magnet is positioned in the positioning groove.

According to one embodiment of the utility model, the end-in-magnetic control device comprises two swing arms, each provided with at least one magnet, wherein the pivoting ends of the two swing arms are rotatably mounted adjacent to one side of the edge of the housing, the driven ends of the two swing arms are swingably mounted adjacent to the other side of the edge of the housing, the driving wheel is located between the driven ends of the two swing arms, wherein the number of the connecting elements is two, one end of each connecting element is connected to the driving wheel, and the other end is connected to the driven end of each swing arm.

According to one embodiment of the utility model, the end-piece internal magnetic control device further comprises a potentiometer mounted to the housing, the shaft of the potentiometer being drivably connected to the drive wheel.

According to one embodiment of the utility model, the housing has a housing bore which communicates the interior space with the outside environment, wherein the shaft of the potentiometer is drivably connected to the drive wheel after passing through the housing bore of the housing.

According to one embodiment of the present utility model, the in-middle magnetic control device comprises a housing, a driving unit, at least one curved swing arm, at least one magnet and a potentiometer, wherein the housing has an inner space, a peripheral opening surrounding the inner space and at least one communication channel communicating the inner space and the peripheral opening, wherein the swing arm has a pivoting end and a driven end corresponding to the pivoting end, the pivoting end of the swing arm is rotatably mounted on one side of an edge of the housing, the driven end of the swing arm is swingably disposed on the other side of the edge of the housing, the magnet is disposed on the swing arm, wherein the driving unit comprises a driving wheel and at least one connecting element, the driving wheel is rotatably disposed on the housing, the middle part of the connecting element is movably disposed on the communication channel of the housing, and one end of the connecting element is connected to the driving wheel, the other end is connected to the driven end of the swing arm, the driven end is rotatably mounted on one side of the housing, the side wall is rotatably disposed on the side of the side wall, the side wall is rotatably mounted on the side of the housing, the side wall is rotatably mounted on the side wall, and the side wall is rotatably mounted on the side of the side wall.

According to one embodiment of the utility model, the in-mid magnetic control means comprises two swing arms, each provided with at least one magnet, wherein the pivoting ends of the two swing arms are rotatably mounted adjacent to one side of the edge of the housing, the driven ends of the two swing arms are swingably mounted adjacent to the other side of the edge of the housing, the driving wheel is located between the driven ends of the two swing arms, wherein the number of the connecting elements is two, one end of each connecting element is connected to the driving wheel, and the other end is connected to the driven end of each swing arm.

According to one embodiment of the utility model, the force-bearing device comprises a force-bearing wheel set and a reset mechanism, wherein the force-bearing wheel set comprises a force-bearing wheel and a driving wheel, the force-bearing wheel can drive the driving wheel to synchronously rotate, the reset mechanism comprises a coil spring, one of the inner end and the outer end of the coil spring is fixedly connected with the equipment frame, the other end is fixedly connected with the force-bearing wheel set, and the diameter size of the force-bearing wheel is smaller than that of the driving wheel.

According to one embodiment of the utility model, the force-bearing device comprises a force-bearing wheel set and a reset mechanism, wherein the force-bearing wheel set comprises a force-bearing wheel and a driving wheel, the force-bearing wheel can drive the driving wheel to synchronously rotate, wherein the reset mechanism comprises a coil spring, one of the inner end and the outer end of the coil spring is fixedly connected with the equipment frame, the other is fixedly connected with the force-bearing wheel set, the diameter size of the force-bearing wheel is smaller than the diameter size of the driving wheel, the exercise equipment further comprises two driving elements, the middle wheel shaft of the middle flywheel is drivably connected with the driving wheel of the force-bearing wheel set through one driving element, and the end wheel shaft of the end flywheel is drivably connected with the middle wheel rim of the middle flywheel through the other driving element.

According to one embodiment of the utility model, opposite ends of one transmission element are sleeved on the middle section wheel shaft of the middle section flywheel and the driving wheel of the stress wheel set respectively, and opposite ends of the other transmission element are sleeved on the end section wheel shaft of the end section flywheel and the middle section rim of the middle section flywheel respectively.

According to one embodiment of the utility model, the force-receiving means, the mid-section resistance means and the end-section resistance means are arranged in a "delta" shape; or the stress device, the middle section resistance device and the end section resistance device are arranged in an L shape.

Drawings

Fig. 1 is a schematic perspective view of an exercise apparatus according to a preferred embodiment of the present utility model.

Fig. 2A and 2B are respectively exploded views of the exercise apparatus according to the above preferred embodiment of the present utility model.

Fig. 3A and 3B are schematic perspective views of different views of the partial structure of the exercise apparatus according to the above preferred embodiment of the present utility model.

Fig. 4A and 4B are perspective views of a stress wheel set of the exercise apparatus according to the above preferred embodiment of the present utility model.

Fig. 5A and 5B are respectively exploded views of the force-bearing wheel set of the exercise apparatus according to the above preferred embodiment of the present utility model.

Fig. 6A and 6B are perspective views of a flywheel set of the exercise apparatus according to the above preferred embodiment of the present utility model.

Fig. 7A and 7B are respectively exploded views of the flywheel set of the exercise device according to the above preferred embodiment of the present utility model.

FIG. 8 is a force-bearing relationship diagram of the exercise apparatus according to the above preferred embodiment of the present utility model.

Fig. 9 is a schematic perspective view of the magnetic control device in a final section of the exercise apparatus according to the preferred embodiment of the present utility model.

Fig. 10 is an exploded view of the magnetic control device in the end section of the exercise apparatus according to the above preferred embodiment of the present utility model.

FIG. 11 is a schematic cross-sectional view of the magnetic control device in the end section of the exercise apparatus according to the preferred embodiment of the present utility model.

Detailed Description

Before any embodiments of the utility model are explained in detail, it is to be understood that the utility model is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The utility model is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Furthermore, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.

Also, in the present disclosure, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms should not be construed as limiting the present disclosure; in a second aspect, the terms "a" and "an" should be understood as "at least one" or "one or more", i.e. in one embodiment the number of one element may be one, while in another embodiment the number of the element may be plural, the term "a" should not be construed as limiting the number.

An exercise apparatus according to a preferred embodiment of the present utility model will be disclosed and described in the following description with reference to fig. 1 to 8 of the drawings, wherein the exercise apparatus comprises an apparatus frame 10, a force-bearing device 20, at least one middle section resistance device 30 and a final section resistance device 40, the force-bearing device 20, the middle section resistance device 30 and the final section resistance device 40 being respectively provided to the apparatus frame 10, the force-bearing device 20, the middle section resistance device 30 and the final section resistance device 40 being provided in series, and the final section resistance device 40 providing a continuously adjustable reluctance resistance to allow the overall load of the exercise apparatus to be adjusted in a continuously adjustable manner, while the overall load of the exercise apparatus has a greater adjustment range by providing the force-bearing device 20, the middle section resistance device 30 and the final section resistance device 40 in series.

Specifically, the force receiving device 20 includes a force receiving wheel set 21 and a return mechanism 22, wherein the force receiving wheel set 21 is rotatably mounted to the equipment rack 10, wherein the return mechanism 22 includes a coil spring 221, the coil spring 221 has a coil spring inner end 2211 and a coil spring outer end 2212 corresponding to the coil spring inner end 2211, one of the coil spring inner end 2211 and the coil spring outer end 2212 of the coil spring 221 is connected to the force receiving wheel set 21, and the other of the coil spring inner end 2211 and the coil spring outer end 2212 of the coil spring 221 is connected to the equipment rack 10. When a user starts to apply force to the force-receiving wheel set 21 to enable the force-receiving wheel set 21 to rotate in one direction relative to the equipment frame 10, the force-receiving wheel set 21 drives the coil spring 221 to elastically deform to enable the coil spring 221 to store elastic potential energy, and when the user stops applying force to the force-receiving wheel set 21, the coil spring 221 drives the force-receiving wheel set 21 to rotate in the opposite direction relative to the equipment frame 10 to restore to an initial position when restoring to an initial state.

Further, the force-receiving wheel set 21 includes a force-receiving wheel 211, a driving wheel 212, and a first mounting shaft 213, the force-receiving wheel 211 has a force-receiving wheel center through hole 2111, the driving wheel 212 has a driving wheel center through hole 2121, wherein a middle portion of the first mounting shaft 213 is mounted to the force-receiving wheel center through hole 2111 of the force-receiving wheel 211 and the driving wheel center through hole 2121 of the driving wheel 212, and opposite ends of the first mounting shaft 213 are respectively exposed to a side of the force-receiving wheel 211 away from the driving wheel 212 and a side of the driving wheel 212 away from the force-receiving wheel 211, wherein the force-receiving wheel 211 is configured to be capable of driving the driving wheel 212 to rotate synchronously. Opposite ends of the first mounting shaft 213 of the force-receiving wheel set 21 are rotatably mounted to the equipment frame 10, respectively, to allow the force-receiving wheel set 21 to rotate relative to the equipment frame 10 about a central axis of the first mounting shaft 213 as a rotation axis. Excellent (excellent)

It should be noted that the manner in which the force-receiving wheel 211 is configured to drive the driving wheel 212 to rotate synchronously is not limited in the exercise apparatus of the present utility model. For example, in the specific example of the exercise apparatus shown in fig. 1 to 8, the force-receiving wheel 211 and the driving wheel 212 are two independent components, which are respectively fixedly sleeved on the middle part of the first mounting shaft 213, wherein the force-receiving wheel 211 can drive the first mounting shaft 213 to synchronously rotate, and the first mounting shaft 213 can drive the driving wheel 212 to synchronously rotate, so that the force-receiving wheel 211 is configured to synchronously rotate the driving wheel 212.

Alternatively, in other examples of the exercise apparatus of the present utility model, the force-receiving wheel 211 and the driving wheel 212 are two independent components, and the force-receiving wheel 211 and the driving wheel 212 may be mounted to each other by, but not limited to, a connection mechanism such as a screw, such that the force-receiving wheel 211 is configured to rotate the driving wheel 212 in synchronization.

Alternatively, in other examples of the exercise apparatus of the present utility model, the force-receiving wheel 211 and the driving wheel 212 are integrally formed, such that the force-receiving wheel 211 is configured to rotate the driving wheel 212 in synchronization.

With continued reference to fig. 5B, the inner end 2211 of the return coil spring 221 of the return mechanism 22 is fixedly connected to the force-receiving wheel 211 of the force-receiving wheel set 21, and the outer end 2212 of the coil spring 221 is fixedly connected to the equipment frame 10, so that when a user starts to apply force to the force-receiving wheel 211 of the force-receiving wheel set 21 to rotate the force-receiving wheel 211 relative to the equipment frame 10 in one direction, the force-receiving wheel 211 drives the coil spring 221 to generate elastic deformation to accumulate elastic potential energy, and when the user stops applying force to the force-receiving wheel 211 of the force-receiving wheel set 21, the coil spring 221 drives the force-receiving wheel 211 of the force-receiving wheel set 21 to rotate relative to the equipment frame 10 in the opposite direction to restore to the initial position.

Alternatively, in other examples of the exercise apparatus of the present utility model, the coil spring inner end 2211 of the return coil spring 221 of the return mechanism 22 is fixedly connected to the first mounting shaft 213 of the force-receiving wheel set 21, and the coil spring outer end 2212 of the coil spring 221 is fixedly connected to the apparatus frame 10, so that when the force-receiving wheel 211 of the force-receiving wheel set 21 is initially applied by the user to rotate the force-receiving wheel 211 in one direction relative to the apparatus frame 10, the first mounting shaft 213 drives the coil spring 221 to elastically deform to accumulate elastic potential energy, and when the force-receiving wheel 211 of the force-receiving wheel set 21 is stopped by the user, the coil spring 221 drives the force-receiving wheel 211 of the force-receiving wheel set 21 and the first mounting shaft 213 in the opposite direction relative to the apparatus frame 10 to rotate in the opposite direction to return to the initial position.

With continued reference to fig. 5B, the return mechanism 22 further includes a return housing 222, the return housing 222 having a housing space 2221 and a housing center through hole 2222 communicating with the housing space 2221, the middle portion of the first mounting shaft 213 of the force-receiving wheel set 21 being mounted to the housing center through hole 2222 of the return housing 222, wherein the coil spring 221 is deformably provided to the housing space 2221 of the return housing 222, and the coil spring outer end 2212 of the coil spring 221 is fixedly mounted to the return housing 222, the return housing 222 being fixedly mounted to the equipment rack 10 such that the coil spring outer end 2212 of the coil spring 221 is fixedly connected to the equipment rack 10 by the return housing 222.

Referring to fig. 2A to 3B, the exercise apparatus further includes a pulling rope 50, one end portion of the pulling rope 50 is fixed to the force-receiving wheel 211 of the force-receiving wheel set 21, and the pulling rope 50 is wound around the force-receiving wheel 211, and when a user applies force (e.g., pulls) on the other end portion of the pulling rope 50, the pulling rope 50 can drive the force-receiving wheel 211 of the force-receiving wheel set 21 to rotate, so as to drive the coil spring 221 to elastically deform to accumulate elastic potential energy while the force-receiving wheel 211 drives the driving wheel 212 to synchronously rotate.

It should be noted that the number of the mid-section resistance means 30 is not limited in the exercise apparatus of the present utility model, and is selected according to the adjustment range of the overall load of the exercise apparatus. For example, in this particular example of the exercise machine shown in fig. 1-8, the number of midsection resistance mechanisms 30 is one, while in other alternative examples of the exercise machine, the number of midsection resistance mechanisms 30 may be more than two. For ease of description and understanding, the contents and features of the exercise apparatus of the present utility model will be described further below by taking the number of midsection resistance devices 30 as one example.

The mid-section resistance device 30 includes a mid-section internal magnetic control device 31, a mid-section mounting shaft 32, and a mid-section flywheel 33. The middle section inner magnetic control device 31 is provided with a middle section magnetic control mounting hole 311, the middle section of the middle section mounting shaft 32 is mounted on the middle section magnetic control mounting hole 311 of the middle section inner magnetic control device 31, and the middle section inner magnetic control device 31 and the middle section mounting shaft 32 are mutually fixed, namely, the mutual positions of the middle section inner magnetic control device 31 and the middle section mounting shaft 32 are kept unchanged. The middle stage flywheel 33 has a middle stage flywheel mounting hole 331, the middle of the middle stage flywheel mounting shaft 32 is mounted to the middle stage flywheel mounting hole 331 of the middle stage flywheel 33, and a gap is provided between the outer wall of the middle stage flywheel 32 and the inner wall of the middle stage flywheel 33 for forming the middle stage flywheel mounting hole 331 to allow the middle stage flywheel 33 to rotate about a rotation axis formed by the central axis of the middle stage flywheel mounting shaft 32. Opposite ends of the center piece mounting shaft 32 are mounted to the equipment rack 10. The middle flywheel 33 of the middle resistance device 30 is drivably connected to the driving wheel 212 of the force-receiving wheel set 21 of the force-receiving device 20, so as to allow the driving wheel 212 of the force-receiving wheel set 21 to drive the middle flywheel 33 to rotate around a rotation axis formed by the central axis of the middle mounting shaft 32. The middle flywheel 33 is capable of cutting the magnetic induction lines of the middle internal magnetic control device 31 when rotating around the rotation axis formed by the central axis of the middle mounting shaft 32 to allow the middle resistance device 30 to provide magnetic resistance, so that the exercise equipment obtains an overall load to help the user achieve the purpose of exercise. The mid-section internal magnetic control means 31 of the mid-section resistance means 30 provides a continuously adjustable magnetic field environment such that the mid-section resistance means 30 provides a continuously adjustable reluctance resistance, whereby the overall load of the exercise machine can be adjusted in a continuously adjustable manner.

Further, the middle flywheel 33 includes a middle wheel body 332, a middle wheel axle 333, and a middle rim 334, and has a middle flywheel space 335, wherein the middle wheel axle 333 extends integrally outward from the middle of one side of the middle wheel body 332, the middle rim 334 extends integrally outward from the periphery of the other side of the middle wheel body 332, so as to form the middle flywheel space 335 between the middle wheel body 332 and the middle rim 334, and the middle flywheel mounting hole 331 of the middle flywheel 33 is formed in the middle wheel axle 333 and is communicated with the middle flywheel space 335. The circumference of the mid-section internal magnetic control device 31 provides a continuously adjustable magnetic field environment, wherein the mid-section internal magnetic control device 31 is suspended in the mid-section flywheel space 335 of the mid-section flywheel 33, and the mid-section rim 334 of the mid-section flywheel 33 surrounds the circumference of the mid-section internal magnetic control device 31, such that the mid-section flywheel 33 is capable of cutting the magnetic induction lines of the mid-section internal magnetic control device 31 to allow the mid-section resistance device 30 to provide reluctance resistance when the mid-section flywheel 33 is driven to rotate relative to the mid-section internal magnetic control device 31 about a rotational axis formed by the central axis of the mid-section mounting shaft 32.

The diameter of the driving wheel 2122 of the force-bearing wheel set 21 is larger than the diameter of the force-bearing wheel 211 and the diameter of the middle wheel axle 333 of the middle flywheel 33, and the middle wheel axle 333 of the middle flywheel 33 is drivably connected to the driving wheel 212 of the force-bearing wheel set 21, so that when the user drives the force-bearing wheel set 21 to rotate by applying force to the pull rope 50, the middle flywheel 33 is driven to rotate around the rotation axis formed by the central axis of the middle mounting shaft 32 relative to the middle inner magnetic control device 31, and even if the middle resistance device 30 provides smaller magnetic resistance, the exercise apparatus can obtain larger overall load.

With continued reference to fig. 2A-3B, the exercise apparatus further includes a first transmission element 60, the first transmission element 60 being configured to couple the transmission wheel 212 of the force-bearing wheel set 21 and the middle axle 333 of the middle flywheel 33 to allow the transmission wheel 212 to rotate the middle flywheel 33 about an axis of rotation defined by a central axis of the middle mounting shaft 32 relative to the middle inner magnetic control device 31 via the first transmission element 60.

It should be appreciated that the particular type of first transmission element 60 is not limited in the exercise apparatus of the present utility model. For example, in the specific example of the exercise machine shown in fig. 1 to 8, the first transmission element 60 may be an endless belt, one end of which is fitted around the peripheral wall of the driving wheel 212 of the force-receiving wheel set 21, and the other end of which is fitted around the peripheral wall of the middle wheel axle 333 of the middle flywheel 33, so that the first transmission element 60 is connected to the driving wheel 212 of the force-receiving wheel set 21 and the middle wheel axle 333 of the middle flywheel 33. Preferably, the peripheral wall of the driving wheel 212 of the force-receiving wheel set 21 and the peripheral wall of the center wheel axle 333 of the center wheel 33 may be provided with anti-slip grooves to increase the friction between the first transmission element 60 implemented as a belt and the peripheral wall of the driving wheel 212 of the force-receiving wheel set 21 and to increase the friction between the first transmission element 60 implemented as a belt and the peripheral wall of the wheel axle 333 of the center wheel 33.

Alternatively, in other embodiments of the exercise apparatus of the present utility model, the first transmission element 60 may be implemented as a chain structure, and accordingly, the peripheral wall of the driving wheel 212 of the force-receiving wheel set 21 and the peripheral wall of the middle wheel shaft 333 of the middle flywheel 33 have a gear structure.

It should be noted that in other embodiments of the exercise apparatus of the present utility model, the mid-section resistance device 30 may not be configured with the mid-section internal magnetic control device 31, i.e., the mid-section resistance device 30 is composed of the mid-section mounting shaft 32 and the mid-section flywheel 33.

With continued reference to fig. 1-8, the end drag device 40 includes an end internal magnetic control device 41, an end mounting shaft 42, and an end flywheel 43. The end-section internal magnetic control device 41 is provided with an end-section magnetic control mounting hole 411, the middle part of the end-section mounting shaft 42 is mounted in the end-section magnetic control mounting hole 411 of the end-section internal magnetic control device 41, and the end-section internal magnetic control device 41 and the end-section mounting shaft 42 are mutually fixed, that is, the relative positions of the end-section internal magnetic control device 41 and the end-section mounting shaft 42 are kept unchanged. The end flywheel 43 has an end flywheel mounting hole 431, the middle portion of the end flywheel mounting shaft 42 is mounted to the end flywheel mounting hole 431 of the end flywheel 43, and a gap is provided between the outer wall of the end flywheel 42 and the inner wall of the end flywheel 43 for forming the end flywheel mounting hole 431 to allow the end flywheel 43 to rotate about a rotation axis formed by the central axis of the end flywheel mounting shaft 42. Opposite ends of the end mounting shaft 42 are mounted to the equipment rack 10. The end flywheel 43 of the end resistance device 40 is drivably connected to the middle flywheel 33 of the middle resistance device 30 to allow the middle flywheel 33 to rotate the end flywheel 43 about a rotational axis formed by the central axis of the end mounting shaft 42. The end flywheel 43, when rotated about the axis of rotation defined by the central axis of the end mounting shaft 42, is capable of cutting the magnetic induction lines of the end internal magnetic control device 41 to allow the end resistance device 40 to provide reluctance resistance to achieve an overall load on the exercise machine to assist the user in exercising. The end internal magnetic control means 41 of the end resistance means 40 provides a continuously adjustable magnetic field environment such that the end resistance means 40 provides a continuously adjustable reluctance resistance such that the overall load of the exercise machine can be adjusted in a continuously adjustable manner.

Further, the end flywheel 43 includes an end wheel body 432, an end wheel shaft 433, and an end rim 434, and has an end flywheel space 435, wherein the end wheel shaft 433 integrally extends from the middle of one side of the end wheel body 432 to the outside, the end rim 434 integrally extends from the periphery of the other side of the end wheel body 432 to the outside, so as to form the end flywheel space 435 between the end wheel body 432 and the end rim 434, and the end flywheel mounting hole 431 of the end flywheel 43 is formed in the end wheel shaft 433 and is communicated with the end flywheel space 435. The circumference of the inner end magnetic control device 41 provides a continuously adjustable magnetic field environment, wherein the inner end magnetic control device 41 is suspended in the inner end flywheel space 435 of the inner end flywheel 43, and the inner end rim 434 of the inner end magnetic control device 41 is wrapped around the circumference of the inner end magnetic control device 43, such that the inner end flywheel 43 is capable of cutting the magnetic induction lines of the inner end magnetic control device 41 to allow the inner end resistance device 40 to provide reluctance resistance when the inner end flywheel 43 is driven to rotate relative to the inner end magnetic control device 41 about a rotation axis formed by the central axis of the inner end mounting shaft 42.

The diameter of the middle rim 334 of the middle flywheel 33 of the middle resistance device 30 is larger than the diameter of the end axle 433 of the end flywheel 43 of the end resistance device 40, the end axle 433 of the end flywheel 43 is drivably connected to the middle rim 334 of the middle flywheel 33, so that when the user drives the force-bearing wheel set 21 to rotate by applying force to the pull rope 50 to drive the middle flywheel 33 to rotate about the rotation axis formed by the central axis of the middle mounting shaft 32 relative to the middle inner magnetic control device 31, the middle flywheel 33 drives the end flywheel 43 to rotate about the rotation axis formed by the central axis of the end mounting shaft 42 relative to the end inner magnetic control device 41, even if the end resistance device 40 provides smaller magnetic resistance, the exercise apparatus can obtain larger overall load.

With continued reference to fig. 2A-3B, the exercise apparatus further includes a second transmission member 70, the second transmission member 70 being configured to connect the middle rim 334 of the middle flywheel 33 and the end axle 433 of the end flywheel 43 to allow the middle flywheel 33 to rotate relative to the end internal magnetic control device 41 about a rotational axis formed by the central axis of the end mounting shaft 42 by the second transmission member 70 driving the end flywheel 43.

It should be appreciated that the particular type of second transmission element 70 is not limited in the exercise apparatus of the present utility model. For example, in the specific example of the exercise apparatus shown in fig. 1 to 8, the second transmission member 70 may be an endless belt, one end of which is fitted around the peripheral wall of the middle section axle 333 of the middle section flywheel 33, and the other end of which is fitted around the peripheral wall of the end section axle 433 of the end section flywheel 43, so that the second transmission member 70 is provided to connect the middle section rim 334 of the middle section flywheel 33 and the end section axle 433 of the end section flywheel 43. Preferably, the peripheral walls of the middle section rim 334 of the middle section flywheel 33 and the peripheral walls of the end section axle 433 of the end section flywheel 43 are provided with anti-slip grooves, respectively, to increase the friction between the second transmission element 70 implemented as a belt and the peripheral walls of the middle section rim 334 of the middle section flywheel 33, and to increase the friction between the second transmission element 70 implemented as a belt and the peripheral walls of the end section rim 434 of the end section flywheel 43.

Alternatively, in other embodiments of the exercise apparatus of the present utility model, the second transmission element 70 may be implemented as a chain structure, and accordingly, the peripheral wall of the middle rim 334 of the middle flywheel 33 and the peripheral wall of the final wheel axle 433 of the final flywheel 43 have a gear structure.

In addition, the relative positions of the force-receiving device 20, the middle section resistance device 30 and the end section resistance device 40 can be flexibly arranged by connecting the first transmission element 60 with the transmission wheel 212 of the force-receiving wheel set 21 and the middle section wheel shaft 333 of the middle section flywheel 33 and connecting the second transmission element 70 with the middle section wheel rim 334 of the middle section flywheel 33 and the end section wheel shaft 433 of the end section flywheel 43. For example, in this particular example of the exercise apparatus shown in fig. 1-8, the force-receiving device 20, the mid-section resistance device 30, and the end-section resistance device 40 are arranged in a "delta" shape. In other specific examples of the exercise apparatus, the force-receiving device 20, the mid-section resistance device 30, and the end-section resistance device 40 may be arranged in an "L" shape.

Referring to fig. 8, let the moment of resistance parameter of the force-receiving wheel 211 be T ₀, let the moment of resistance parameter of the force-receiving wheel 211 be D ₁, let the moment of resistance parameter of the driving wheel 212 be T ₁, let the moment of resistance parameter of the driving wheel 212 be D ₁, let the moment of resistance parameter of the middle flywheel 33 be T ₂, let the diameter parameter of the middle axle 333 of the middle flywheel 33 be D ₂, let the diameter parameter of the middle rim 334 of the middle flywheel 33 be D ₂, let the moment of resistance parameter of the end flywheel 43 be T ₃, let the diameter parameter of the end axle 433 of the end flywheel 43 be D ₃, and let the diameter parameter of the end rim 434 of the end flywheel 43 be D ₃. The middle flywheel 33 and the end flywheel 43 satisfy the relation: t ₁＝(D₁/d₂)×T₂;T₂＝(D₂/d₃)×T₃. Thus, T ₁＝(D₁/d₂)×(D₂/d₃)×T₃. The resistance torque T ₀ of the force receiving wheel 211 satisfies the relation: t ₀＝(D₁/d₁)×T₁. Thus (2) ,T₀＝(D₁/d₁)×(D₁/d₂)×(D₂/d₃)×T₃+(D₁/d₁)×(D₁/d₂)×T₂.

Based on the relational expression T₀＝(D₁/d₁)×(D₁/d₂)×(D₂/d₃)×T₃+(D₁/d₁)×(D₁/d₂)×T₂, by arranging the force-receiving device 20, the middle-stage resistance device 30 and the final-stage resistance device 40 in series, firstly, even in the case that the final-stage resistance device 40 provides small reluctance resistance, the exercise apparatus can obtain large overall load, and secondly, in the case that the reluctance resistance provided by the middle-stage resistance device 30 is the same as the reluctance resistance provided by the final-stage resistance device 40, the influence of the reluctance resistance provided by the middle-stage resistance device 30 on the overall load of the exercise apparatus is smaller than the influence of the reluctance resistance provided by the final-stage resistance device 40 on the overall load of the exercise apparatus, so that fine adjustment on the overall load of the exercise apparatus can be realized by adjusting the reluctance resistance provided by the middle-stage resistance device 30, thereby enabling the overall load of the exercise apparatus to be accurately adjusted.

With continued reference to fig. 1-2B, the exercise apparatus further comprises an outer cover 80, the outer cover 80 having a cover space 81 and a pull cord passage 82 in communication with the cover space 81, wherein a body portion of the exercise apparatus formed by the force-receiving device 20, the mid-section resistance device 30 and the end-section resistance device 40 can be hidden from view in the cover space 81 of the outer cover 80, and one end portion of the pull cord 50 extends to the outside through the pull cord passage 82 of the outer cover 80 for manipulation by a user, such that the exercise apparatus can reduce risk caused by abrupt appearance of foreign matter. Preferably, the outer cover 80 includes a first cover 83 and a second cover 84, and the first cover 83 and the second cover 84 are fastened to each other to form the cover space 81 and the pull cord channel 82 therebetween.

Fig. 9 to 11 show the specific structure of the end internal magnetic control device 41 of the end resistance device 40 of the exercise apparatus according to the present utility model, wherein the end internal magnetic control device 41 comprises a housing 412, a driving unit 413, at least one curved swing arm 414, at least one magnet 415, and a potentiometer 416.

The housing 412 has an inner space 4121, a peripheral opening 4122, at least one communication channel 4123, and a housing through hole 4124, wherein the peripheral opening 4122 surrounds the inner space 4121, the communication channel 4123 communicates the inner space 4121 with the peripheral opening 4122, and the housing through hole 4124 communicates the inner space 4121 with the external environment.

The driving unit 413 includes a driving wheel 4131 and at least one connection member 4132, the driving wheel 4131 is rotatably mounted to the inner space 4121 of the housing 412, one end portion of the connection member 4132 is connected to the driving wheel 4131, and the other end portion of the connection member 4132 extends to the peripheral opening 4122 after passing through the communication passage 4123 of the housing 412.

The swing arm 414 has a pivot end 4141 and a driven end 4142 corresponding to the pivot end 4141, the pivot end 4141 of the swing arm 414 is rotatably mounted to one side of the edge of the housing 412, the driven end 4142 of the swing arm 414 is swingably provided to the other side of the edge of the housing 412, the end of the connecting member 4132 extending to the peripheral opening 4122 of the housing 412 is connected to the driven end 4142 of the swing arm 414, and the swing arm 414 is provided with at least one of the magnets 415.

The potentiometer 416 is mounted to the housing 412, a rotational shaft 4161 of the potentiometer 416 extends through the housing bore 4124 of the housing 412 to the interior space 4121 of the housing 412, and the rotational shaft 4161 of the potentiometer 416 is drivably mounted to the drive wheel 4131.

When the driving wheel 4131 rotates to drive the swing arm 414 to swing around the peripheral opening 4122 of the housing 412 through the connecting element 4132, the driving wheel 4131 simultaneously drives the rotating shaft 4161 of the potentiometer 416 to rotate, so as to change the resistance value of the potentiometer 416. In other words, the resistance value of the potentiometer 416 is associated with the swing position of the swing arm 414, and the swing position of the swing arm 414 may be obtained by obtaining the resistance value of the potentiometer 416, so as to determine the distance between the magnet 415 and the portion of the end flywheel 43 corresponding to the peripheral opening 4122 of the housing 412, so as to obtain the load of the end flywheel 43 during rotation. It will be appreciated that the end-stage internal magnetic control device 41 provides a continuously variable magnetic field environment by rotation of the drive wheel 3141 in a manner in which the swing arm 414 and the magnet 415 are driven to oscillate by the connecting element 4132.

Referring to fig. 9 to 11, the swing arm 414 includes an arm body 4143 and at least one side wall 4144 convexly disposed on a side of the arm body 4143, the magnet 415 is disposed on the arm body 4143, and the side wall 4144 shields at least a portion of a side of the magnet 415, wherein the arm body 4143 and the side wall 4144 gather magnetic induction lines of the magnet 415 toward the direction of the end flywheel 43, so as to reduce magnetic leakage phenomenon and improve the magnetic utilization rate of the magnetic control device 41 in the end. Meanwhile, the side wall 4144 extends from one end to the other end of the arm body 4143, so as to enhance the structural strength of the swing arm 414, and avoid deformation of the swing arm 414 to ensure the reliability of the magnetic control device 41 in the end section. That is, the side wall 4144 not only can gather the magnetic induction line of the magnet 415 toward the end flywheel 43 to enhance the magnetic utilization rate of the end internal magnetic control device 41, but also can enhance the structural strength of the swing arm 414 to avoid the problem that the reliability of the end internal magnetic control device 41 is affected due to the deformation of the swing arm 414.

Preferably, the swing arm 414 includes two side walls 4144, one side wall 4144 is respectively disposed on each of opposite sides of the arm body 4143, so that the swing arm 414 forms a positioning slot 4145 between the arm body 4143 and the two side walls 4144, and the magnet 415 disposed on the arm body 4143 is positioned on the positioning slot 4145 of the swing arm 414.

In this particular example of the resistance device of the present utility model, the side wall 4144 of the swing arm 414 extends integrally outward from the side edge of the arm body 4143, i.e., the arm body 4143 and the side wall 4144 of the swing arm 414 are of unitary construction.

With continued reference to fig. 9-11, the end in-field magnetic control device 41 includes two swing arms 414 and two sets of magnets 415, the pivot ends 4141 of the two swing arms 414 are rotatably mounted adjacent to one side of the edge of the housing 412, the driven ends 4142 of the two swing arms 414 are swingably disposed adjacent to the other side of the edge of the housing 412, and the two swing arms 414 are provided with a set of magnets 415, respectively. Accordingly, the driving unit 413 includes one driving wheel 4131 and two connecting elements 4132, the driving wheel 4131 is located between the driven ends 4142 of the two swing arms 414, and one end of each connecting element 4132 is connected to the driving wheel 4131, and the other end is connected to the driven end 4142 of each swing arm 414. When the driving wheel 4131 rotates, the driving wheel 4131 applies force to the driven ends 4142 of the two swing arms 414 through the connecting members 4132, so as to drive the two swing arms 414 to swing in a symmetrical manner relative to the housing 412.

In this particular example of the resistance device of the present utility model, the connecting element 4132 is rigid, one end of the connecting element 4132 is rotatably mounted to the driven end 4142 of the swing arm 414, and the other end is rotatably mounted to the edge of the driving wheel 4131, such that upon rotation of the driving wheel 4131 relative to the housing 412, one end of the connecting element 4132 rotates relative to the driving wheel 4131, and the other end rotates relative to the swing arm 414, such that the driving wheel 4131 simultaneously pulls the driven ends 4142 of the two swing arms 414 inward through the two connecting elements 4132 to increase the distance between the magnet 415 and the end flywheels 43, or the driving wheel 4131 simultaneously pushes the driven ends 4142 of the two swing arms 414 outward through the two connecting elements 4132 to decrease the distance between the magnet 415 and the end flywheels 43.

With continued reference to fig. 9-11, the driving unit 413 further includes a driving motor 4133 and a transmission gear set 4134, the driving motor 4133 is disposed on the housing 412, each transmission gear of the transmission gear set 4134 is rotatably mounted on the housing 412 in a manner that adjacent transmission gears are meshed with each other, and one transmission gear of the transmission gear set 4134 is meshed with the worm 41331 of the driving motor 4133 and the other transmission gear of the transmission gear set is meshed with the driving wheel 4131, such that the driving motor 4133 can output power to the driving wheel 4131 through the transmission gear set 4134 to drive the driving wheel 4131 to rotate relative to the housing 412.

With continued reference to fig. 9-11, the housing 412 includes a first housing 4125 and a second housing 4126, the first housing 4125 and the second housing 4126 being mounted to each other to form the interior space 4121, the peripheral opening 4122 and the communication channel 4123 between the first housing 4125 and the second housing 4126, the housing through-hole 4124 being formed in the first housing 4125. The driving wheel 4131, the driving motor 4133 and the transmission gear set 4134 of the driving unit 413 are respectively operatively disposed in the inner space 4121 of the housing 412, the two swing arms 414 and the magnet 415 disposed in the swing arm 414 are respectively swingably disposed in the peripheral opening 4122 of the housing 412, the middle portions of the two connecting members 4132 are respectively movably disposed in the communication passage 4123 of the housing 412, and the opposite ends of the connecting members 4132 are respectively rotatably mounted to the driving wheel 4131 and the driven end 4142 of the swing arm 414, and the potentiometer 416 is fixedly mounted to the first housing 4125.

It will be appreciated that the specific structure of the middle-stage internal magnetic control device 31 and the specific structure of the end-stage internal magnetic control device 41 may be identical, and the present utility model will not be repeated.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims

1. The body-building equipment is characterized by comprising an equipment frame, and a stress device, at least one middle section resistance device and a final section resistance device which are respectively arranged on the equipment frame, wherein the stress device, the middle section resistance device and the final section resistance device are arranged in series, and the final section resistance device provides continuously adjustable magnetic resistance.

2. The exercise machine of claim 1, wherein the midsection resistance device provides a continuously adjustable reluctance resistance.

3. The exercise machine of claim 2, wherein the end drag device comprises an end flywheel having an end flywheel space and an end internal magnetic control device suspended from the end flywheel space of the end flywheel and providing a continuously adjustable magnetic field environment, wherein the end flywheel cuts lines of magnetic induction of the end internal magnetic control device to provide reluctance drag when the end flywheel is driven into rotation relative to the end internal magnetic control device.

4. The exercise machine of claim 3, wherein the end flywheel comprises an end wheel body, an end wheel shaft and an end rim, the end wheel shaft extending integrally outward from a middle portion of one side of the end wheel body, the end rim extending integrally outward from an edge of the other side of the end wheel body, the end flywheel space being formed between the end wheel body and the end rim.

5. The exercise apparatus of claim 4 wherein the mid-section resistance device comprises a mid-section flywheel, the mid-section flywheel being drivably connected to the force-receiving device, the end-section flywheel being drivably connected to the mid-section flywheel.

6. The exercise apparatus of claim 5, wherein the midsection flywheel comprises a midsection wheel body, a midsection wheel shaft extending integrally outwardly from a middle portion of one side of the midsection wheel body, and a midsection wheel rim extending integrally outwardly from a peripheral edge of the other side of the midsection wheel body, wherein the midsection wheel shaft of the midsection flywheel is drivably connected to the force-receiving device, wherein the end section wheel shaft of the end section flywheel is drivably connected to the midsection wheel rim of the midsection flywheel.

7. The exercise machine of claim 6, wherein the midsection flywheel has a midsection flywheel space formed between the midsection wheel body and the midsection rim, wherein the midsection resistance device further comprises a midsection internal magnetic control device suspended from the midsection flywheel space of the midsection flywheel and providing a continuously adjustable magnetic field environment, wherein the midsection flywheel cuts a magnetic induction line of the midsection internal magnetic control device to provide reluctance resistance to the midsection resistance device when the midsection flywheel is driven to rotate relative to the midsection internal magnetic control device.

8. The exercise apparatus of claim 3, wherein the end-in-arm magnetic control device comprises a housing having an interior space, a peripheral opening surrounding the interior space, and at least one communication channel communicating the interior space and the peripheral opening, a drive unit having a pivot end and a driven end corresponding to the pivot end, the pivot end of the swing arm being rotatably mounted to one side of an edge of the housing, the driven end of the swing arm being swingably disposed to the other side of the edge of the housing, and at least one magnet disposed to the swing arm, wherein the drive unit comprises a drive wheel rotatably disposed to the housing, a middle portion of the connecting element being movably disposed to the communication channel of the housing, and one end of the connecting element being connected to the drive wheel, the other end being connected to the driven end of the swing arm.

9. The exercise apparatus of claim 8, wherein the connecting element is rigid, one end of the connecting element being rotatably mounted to the drive wheel and the other end being rotatably mounted to the driven end of the swing arm.

10. The exercise apparatus of claim 9, wherein the swing arm comprises an arm body and at least one side wall convexly disposed on a side of the arm body, the magnet is disposed on the arm body, and at least a portion of the side of the magnet is shielded by the side wall.

11. The exercise apparatus of claim 10 wherein the swing arm includes two side walls, one side wall being provided on each of opposite sides of the arm body to form a detent between the arm body and the two side walls, the magnet being positioned in the detent.

12. The exercise apparatus of claim 8, wherein the end in-arm magnetic control comprises two swing arms, each swing arm being provided with at least one magnet, wherein the pivot ends of the two swing arms are rotatably mounted adjacent one side of the edge of the housing, the driven ends of the two swing arms are swingably disposed adjacent the other side of the edge of the housing, the drive wheel is located between the driven ends of the two swing arms, wherein the number of connection elements is two, one end of each connection element is connected to the drive wheel, and the other end is connected to the driven end of each swing arm.

13. The exercise apparatus of claim 8 wherein the end-piece internal magnetic control further comprises a potentiometer mounted to the housing, the shaft of the potentiometer being drivably connected to the drive wheel.

14. The exercise apparatus of claim 13, wherein the housing has a housing aperture, the housing aperture communicating the interior space with an external environment, wherein the shaft of the potentiometer is drivably connected to the drive wheel after passing through the housing aperture of the housing.

15. The exercise apparatus of claim 7, wherein the in-midsection magnetic control device comprises a housing, a drive unit, at least one curved swing arm, at least one magnet, and a potentiometer, wherein the housing has an interior space, a peripheral opening surrounding the interior space, and at least one communication channel communicating the interior space and the peripheral opening, wherein the swing arm has a pivoting end and a driven end corresponding to the pivoting end, the pivoting end of the swing arm is rotatably mounted to one side of an edge of the housing, the driven end of the swing arm is swingably disposed to the other side of the edge of the housing, the magnet is disposed to the swing arm, wherein the drive unit comprises a drive wheel and at least one connecting element, the drive wheel is rotatably disposed to the housing, a middle portion of the connecting element is movably disposed to the communication channel of the housing, and one end of the connecting element is connected to the drive wheel, the other end is connected to the driven end of the swing arm, the driven end is rotatably mounted to one side of the swing arm, the side wall is rotatably disposed to the side of the housing, and the side wall is rotatably connected to the side of the housing, and the side wall is rotatably mounted to the side of the side wall.

16. The exercise apparatus of claim 15, wherein the in-midsection magnetic control device comprises two swing arms, each swing arm being provided with at least one magnet, wherein the pivot ends of the two swing arms are rotatably mounted adjacent one side of the edge of the housing, the driven ends of the two swing arms are swingably disposed adjacent the other side of the edge of the housing, the drive wheel is located between the driven ends of the two swing arms, wherein the number of connection elements is two, one end of each connection element is connected to the drive wheel, and the other end is connected to the driven end of each swing arm.

17. The exercise apparatus of any one of claims 1 to 16, wherein the force-receiving means comprises a force-receiving wheel set and a return mechanism, wherein the force-receiving wheel set comprises a force-receiving wheel and a drive wheel, the force-receiving wheel being capable of driving the drive wheel to rotate in unison, wherein the return mechanism comprises a coil spring, one of the coil spring inner end and the coil spring outer end of which is fixedly connected to the apparatus frame, the other of which is fixedly connected to the force-receiving wheel set, wherein the force-receiving wheel has a diameter dimension that is smaller than the diameter dimension of the drive wheel.

18. The exercise apparatus of claim 6 or 7, wherein the force-bearing device comprises a force-bearing wheel set and a return mechanism, wherein the force-bearing wheel set comprises a force-bearing wheel and a drive wheel, the force-bearing wheel being capable of driving the drive wheel to rotate synchronously, wherein the return mechanism comprises a coil spring, one of a coil spring inner end and a coil spring outer end of the coil spring being fixedly connected to the apparatus frame, the other being fixedly connected to the force-bearing wheel set, wherein the force-bearing wheel has a smaller diameter dimension than the drive wheel, wherein the exercise apparatus further comprises two drive elements, the middle section axle of the middle section flywheel being drivably connected to the drive wheel of the force-bearing wheel set by one of the drive elements, wherein the end section axle of the end section flywheel is drivably connected to the middle section of the middle section flywheel by the other of the drive elements.

19. The exercise machine according to claim 18, wherein one of said drive members is mounted on said intermediate axle of said intermediate flywheel and said drive wheel of said force-bearing wheel set, respectively, and the other of said drive members is mounted on said end axle of said end flywheel and said intermediate rim of said intermediate flywheel, respectively.

20. The exercise machine of claim 19, wherein the force-bearing device, the mid-section resistance device, and the end-section resistance device are arranged in a "delta" shape; or the stress device, the middle section resistance device and the end section resistance device are arranged in an L shape.