CN218853403U

CN218853403U - Magnetic resistance mechanism and exercise bicycle

Info

Publication number: CN218853403U
Application number: CN202223320715.4U
Authority: CN
Inventors: 徐林建; 黄飞飞
Original assignee: Nantong Ironmaster Sporting Industrial Co Ltd
Current assignee: Nantong Ironmaster Sporting Industrial Co Ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-04-14
Anticipated expiration: 2032-12-09

Abstract

The application discloses magnetic resistance mechanism and exercise bicycle includes: a mounting tube provided with a first abutting portion and a second abutting portion; the adjusting rod is movably arranged in the mounting pipe, two ends of the adjusting rod extend out of the mounting pipe, a handle is arranged at a first extending end of the adjusting rod, and the adjusting rod is provided with a third abutting part and a fourth abutting part; the elastic piece is arranged between the first abutting part and the third abutting part in an abutting mode, and the second abutting part and the fourth abutting part are in abutting fit under the action of the elastic piece; the magnetic resistance subassembly, the magnetic resistance subassembly includes installation department and magnetic part, and the magnetic part sets up in the installation department, and the second of adjusting the pole stretches out the end and the installation department spiro union is in order to drive the magnetic part along being close to or keeping away from runner direction motion. The application provides a magnetic resistance mechanism and exercise bicycle for need not to go on highly going up and down and can remain at same height throughout at the in-process handle of adjusting the magnetic resistance size through rotatory handle, reduced the risk that the user collided adjust knob when the motion, improved exercise bicycle's security performance.

Description

Magnetic resistance mechanism and exercise bicycle

Technical Field

The utility model relates to a sports apparatus technical field, concretely relates to magnetic resistance mechanism and exercise bicycle.

Background

In order to perform indoor aerobic training, more and more users select the exercise bike to perform exercise. Chinese patent (application number: CN 202022629554.1) discloses an exercise bike, which comprises a first adjusting structure arranged on a bike frame, wherein the first adjusting structure comprises a first magnetic part, a threaded lead screw and an adjusting knob matched with the threaded lead screw, one end of the threaded lead screw is fixedly connected with the first magnetic part, the adjusting knob is rotatably arranged at one end, far away from the first magnetic part, of the threaded lead screw, the adjusting knob is rotated clockwise or anticlockwise to drive the threaded lead screw to move up and down along an axial direction, and then the first magnetic part fixedly connected with the threaded lead screw is driven to move towards a direction close to or far away from a flywheel, so that the size of a magnetic resistance is adjusted.

However, the above exercise bike has the following problems: when the magnetic resistance is reduced, the height of the adjusting knob extending out of the frame can be increased, the risk that a user collides the adjusting knob is increased, and the safety performance of the exercise bicycle is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a reluctance mechanism and exercise bicycle.

In a first aspect, the present application also provides a reluctance mechanism for providing reluctance to a wheel, comprising:

the installation tube is installed on the installation foundation and provided with a first abutting part and a second abutting part;

the adjusting rod is movably arranged in the mounting pipe, two ends of the adjusting rod extend out of the mounting pipe, a handle is arranged at the first extending end of the adjusting rod, the adjusting rod is provided with a third abutting part and a fourth abutting part, the third abutting part is positioned on one side, close to the handle, of the first abutting part, and the fourth abutting part is positioned on one side, far away from the handle, of the second abutting part;

the elastic piece is arranged between the first abutting part and the third abutting part in an abutting mode, and the second abutting part and the fourth abutting part are in abutting fit under the action of the elastic piece;

the magnetic resistance assembly comprises an installation part and a magnetic part, the installation part is arranged on an installation base, the magnetic part is arranged on the installation part, and the second extension end of the adjusting rod is connected with the installation part in a screwed mode so as to drive the magnetic part to move along the direction close to or far away from the rotating wheel.

Further, the installation department includes mounting bracket and connecting piece, and the mounting bracket rotates to set up in the installation basis, and the magnetic part sets up in the mounting bracket, and the connecting piece rotates to be connected in the mounting bracket, adjusts pole spiro union in connecting piece.

Further, the reluctance mechanism further comprises an angle sensor, and the angle sensor is arranged on one side of the mounting frame in the rotating axial direction of the mounting frame.

Further, the mounting bracket is equipped with the pivot and rotates through the pivot to be connected in the installation basis, and magnetic resistance mechanism still includes the torsional spring, and the torsional spring cover is located the both ends of pivot and torsional spring and is connected respectively in installation basis and mounting bracket to provide the elasticity along the direction of rotation of keeping away from the runner to the mounting bracket.

Further, the magnetic resistance assembly further comprises a brake piece, and the brake piece is arranged on the mounting portion.

Further, at least one of the second abutting portion and the fourth abutting portion is adjustably positioned in an axial direction along the adjustment lever to adjust a spacing between the first abutting portion and the third abutting portion.

Furthermore, the second extending end is in threaded connection with an annular first stop piece, the fourth abutting portion is a fourth abutting surface, and the fourth abutting surface is located on one side, close to the handle, of the first stop piece.

Furthermore, one end, far away from the handle, of the installation pipe is provided with an annular end cover, the end cover is sleeved on the periphery of the adjusting rod, the first abutting portion is a first abutting surface and located on one side, close to the handle, of the end cover, the periphery of the adjusting rod is sleeved with an annular second stop piece, the second stop piece is located in the installation pipe, the third abutting portion is a third abutting surface and located on one side, close to the end cover, of the second stop piece, the elastic piece is sleeved on the periphery of the adjusting rod, the second abutting portion is a second abutting surface, and the second abutting surface is located on one side, far away from the handle, of the end cover.

Furthermore, the handle limiting device further comprises a limiting part, the limiting part is arranged on the installation pipe, the limiting part protrudes out of one end, close to the handle, of the installation pipe, and the limiting part is used for being in limiting fit with the handle.

In a second aspect, the present application further provides an exercise bike including a magnetic resistance mechanism.

The application provides a magnetic resistance mechanism and exercise bicycle, through be equipped with first butt portion and second butt portion on the installation pipe, it stretches out the installation pipe just to adjust pole activity setting in the installation pipe and both ends, the first end that stretches out of adjusting the pole is equipped with the handle and the second stretches out end spiro union in the magnetic resistance subassembly, it is equipped with third butt portion and fourth butt portion to adjust the pole, third butt portion is located one side that first butt portion is close to the handle, fourth butt portion is located one side that the handle was kept away from to second butt portion, the elastic component butt sets up between first butt portion and third butt portion and second butt portion and fourth butt portion butt cooperation under the effect of elastic component, make need not to carry out high lift and can remain at same height all the time at the in-process handle of adjusting the magnetic resistance size through rotatory handle, user's collision adjust knob's risk when the motion has been reduced, exercise bicycle's security performance has been improved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic perspective view of a magnetoresistive mechanism according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a magnetoresistive mechanism provided in an embodiment of the present application;

FIG. 3 is a schematic perspective view of an exercise bicycle provided in accordance with an embodiment of the present invention;

fig. 4 is a partial schematic view of an exercise bike according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

Referring to fig. 1 and 2, embodiments of the present application provide a magnetic resistance mechanism for providing a magnetic resistance to the rotating wheel 220 to adjust a rotational resistance of the rotating wheel 220. The magnetic resistance mechanism is applied to exercise bicycles and is used for providing magnetic resistance for wheels and adjusting the magnetic resistance applied to the wheels.

The reluctance mechanism includes a mounting tube 110, an adjustment rod 120, an elastic member 130, and a reluctance assembly. The mounting tube 110 is mounted to a mounting base, and the mounting tube 110 is provided with a first abutting portion and a second abutting portion. The adjusting rod 120 is movably disposed on the mounting tube 110, that is, the adjusting rod 120 can rotate around its axis and move on the axis during mounting, two ends of the adjusting rod 120 extend out of the mounting tube 110, two ends of the adjusting rod 120 extending out of the mounting tube 110 are respectively a first extending end 121 and a second extending end 122, and the first extending end 121 of the adjusting rod 120 is provided with a handle 123. The adjusting rod 120 is provided with a third abutting portion and a fourth abutting portion, the third abutting portion and the first abutting portion are arranged along the axial direction of the adjusting rod 120, the third abutting portion is located on one side of the first abutting portion close to the handle 123, the fourth abutting portion and the second abutting portion are arranged along the axial direction of the adjusting rod 120, and the fourth abutting portion is located on one side of the second abutting portion far away from the handle 123. The elastic member 130 is disposed between the first abutting portion and the third abutting portion, that is, the elastic member 130 is compressed between the first abutting portion and the third abutting portion, and the second abutting portion and the fourth abutting portion are abutted and matched under the action of the elastic member 130, so that the adjustment lever 120 can be maintained at a certain height. The magnetic resistance assembly comprises an installation part and a magnetic part 142, the installation part is arranged on an installation base, the magnetic part 142 is arranged on the installation part, and the second extending end 122 of the adjusting rod 120 is in threaded connection with the installation part so as to drive the magnetic part 142 to move along the direction close to or far away from the rotating wheel 220.

The usage of the reluctance mechanism is as follows: the user drives the adjusting rod 120 to rotate through the rotating handle 123, and the rotating adjusting rod 120 drives the mounting portion to move, so as to drive the magnetic member 142 to move in a direction close to or far away from the rotating wheel 220, thereby adjusting the magnetic resistance applied to the rotating wheel 220 by the magnetic resistance mechanism. The runner 220 is made of a magnetic conductive metal material, such as but not limited to iron or its alloy. The magnetic resistance of the magnetic resistance mechanism is related to the area of the opposite portion between the magnetic element 142 and the rotating wheel 220, for example: the larger the area of the opposing portion between the magnetic member 142 and the rotor 220, the larger the magnetic resistance of the magnetic resistance mechanism. The rotation direction of the handle 123 and the magnitude of the magnetic resistance mechanism are as follows: the handle 123 is rotated in a clockwise direction to increase the magnetic resistance of the magnetic resistance mechanism, and the handle 123 is rotated in a counterclockwise direction to decrease the magnetic resistance of the magnetic resistance mechanism; alternatively, the knob 123 is rotated in a counterclockwise direction to decrease the magnetic resistance of the magnetic resistance mechanism, and the knob 123 is rotated in a clockwise direction to increase the magnetic resistance of the magnetic resistance mechanism.

The magnetic member 142 may be a permanent magnet or an electromagnet. Preferably, the magnetic member 142 is a permanent magnet to simplify the structure of the reluctance mechanism. The elastic member 130 is preferably a spring or the like.

In some embodiments of the present application, the mounting portion includes a mounting frame 141 and a connecting member, the mounting frame 141 is rotatably disposed on the mounting base, and the magnetic member 142 is disposed on the mounting frame 141 and located at one side of a rotation axis of the mounting frame 141. The connecting piece rotates to be connected in mounting bracket 141, adjusts pole 120 spiro union in connecting piece, adjusts pole 120 and can drive the connecting piece and reciprocate along the axial of adjusting pole 120 at rotatory in-process, and the connecting piece that reciprocates drives mounting bracket 141 and rotates, and pivoted mounting bracket 141 drives magnetic part 142 and swings around mounting bracket 141's axis of rotation to adjust the position between magnetic part 142 and runner 220, in order to adjust the magnetic resistance size.

In this embodiment, drive the magnetic resistance component through adjusting pole 120 and rotate in order to adjust the magnetic resistance size for adjust pole 120 only needs the partial weight that bears the magnetic resistance component, has reduced the rotation resistance of handle 123, improves user experience.

Preferably, the connecting member is provided with a threaded through hole, the second protruding end 122 passes through the threaded through hole, the second protruding end 122 is screwed with a first nut 125, and the first nut 125 is located on one side of the connecting member away from the mounting tube 110. By providing the first nut 125 as described above, the first nut 125 can form an abutting engagement with the connector to prevent the adjustment lever 120 from being disengaged from the connector.

Preferably, referring to fig. 1-2, the mounting frame 141 includes two first mounting plates 1412 disposed oppositely, the two first mounting plates 1412 are fixedly connected together through a rotating shaft, and the rotating shaft is rotatably connected to the mounting base. An accommodating space 1411 is formed between the two first mounting plates 1412, and the accommodating space 1411 is used for the rotating wheel 220 to pass through. The magnetic member 142 is disposed on one side of the first mounting plate 1412 close to the accommodating space 1411. The connecting member is located on one side of the rotation axis of the mounting frame 141, the connecting member is a connecting block 147, and two ends of the connecting block 147 are respectively rotatably connected to the two first mounting plates 1412 through first connecting plates 148, so that the connecting member can rotate relative to the mounting frame 141.

Of course, in other embodiments, the mounting portion may be movably disposed on the mounting base along the axial direction of the adjusting rod 120, and the adjusting rod 120 is screwed to the mounting portion to drive the mounting portion to move up and down along the axial direction of the adjusting rod 120, so as to adjust the magnitude of the magnetic resistance.

In some embodiments of the present application, the magnetic resistance mechanism further includes an angle sensor 146, and the angle sensor 146 is disposed on one side of the mounting bracket 141 in the rotational axial direction thereof.

In the embodiment, the rotation angle of the magnetic element 142 is related to the area of the opposite portion between the magnetic element 142 and the rotating wheel 220, so that the rotation angle of the magnetic element 142 and the magnetic resistance applied to the rotating wheel 220 by the magnetic element 142 are in a single mapping relationship. By providing the angle sensor 146, the rotation angle of the magnetic element 142 can be measured, and the magnitude of the magnetic resistance applied to the rotating wheel 220 by the magnetic resistance mechanism can be obtained, so that a user can know the current magnitude of the magnetic resistance mechanism.

Preferably, the angle sensor 146 may be a magnetic angle sensor 146, and the magnetic angle sensor 146 has the advantages of high measurement accuracy, small volume, and the like. The center line of the magnetic angle sensor 146 is preferably arranged coincident with the axis of rotation of the mounting 141.

Wherein, preferably, a display 145 is further included, the display 145 is connected with the angle sensor 146 to display the reluctance size of the reluctance mechanism.

In some embodiments of the present application, the mounting bracket 141 is provided with a rotating shaft and is rotatably connected to the mounting base through the rotating shaft, the reluctance mechanism further includes a torsion spring 144, the rotating shaft is sleeved by the torsion spring 144, and two ends of the torsion spring 144 are respectively connected to the mounting base and the mounting bracket 141, so as to provide elastic force to the mounting bracket 141 along a rotation direction away from the rotating wheel 220.

In the present embodiment, by providing the torsion spring 144, the torsion spring 144 and the elastic member 130 can share the rotation driving force of the mounting bracket 141, so that the load of the elastic member 130 is reduced, which is helpful for reducing the configuration of the elastic member 130.

In some embodiments of the present application, the reluctance assembly further comprises a brake member 143, the brake member 143 being disposed to the mounting portion.

In this embodiment, by providing the above-mentioned brake piece 143, the reluctance mechanism can not only have the function of adjusting the reluctance, but also have the braking function, so that the structure of the mechanism can be optimized while the function of the reluctance mechanism is enriched. Due to the fact that the compressed elastic piece 130 is arranged between the first abutting portion and the second abutting portion, a user can quickly press the handle 123 downwards to achieve a braking function, and after the user releases the handle 123, the handle 123 automatically resets upwards under the driving of the elastic piece 130. Specifically, when a user quickly presses the handle 123, the handle 123 drives the adjusting rod 120 to move downward along the axial direction thereof, the adjusting rod 120 moving downward drives the braking member 143 to move toward the rotating wheel 220 to implement braking, and after the user releases the handle 123, the handle 123 is automatically moved upward and reset by the elastic member 130.

Preferably, referring to fig. 1-2, the mounting bracket 141 further includes a second mounting plate 1413, and the second mounting plate 1413 is fixedly connected between the two first mounting plates 1412 and is located at a circumferential side of the accommodating space 1411.

In some embodiments of the present application, at least one of the second abutment and the fourth abutment is adjustably positioned in an axial direction along the adjustment lever 120 to adjust a spacing between the first abutment and the third abutment.

In this embodiment, the distance between the first abutting portion and the third abutting portion is adjusted to adjust the extending length of the first extending end 121, and further adjust the distance between the handle 123 and the mounting tube 110, so as to satisfy different requirements of users for the height of the handle 123.

In some embodiments of the present application, the second protruding end 122 is screwed with a ring-shaped first stopper 124, and the fourth abutting portion is a fourth abutting surface located on a side of the first stopper 124 close to the handle 123.

In the present embodiment, the second protruding end 122 has a threaded section, and the first stopper 124 is screwed in the threaded section, so that the position of the first stopper 124 in the axial direction of the adjustment rod 120 can be adjusted, and the distance between the first abutting portion and the third abutting portion can be adjusted. The position adjustment of the first stopper 124 is simple in structure and easy to operate.

The first stop member 124 may be a nut screwed to the threaded section, and an end surface of the nut near the handle 123 forms a fourth abutting surface to abut against and cooperate with the second abutting portion. Preferably, referring to fig. 1-2, the first stopper 124 includes a second nut 1241 and a washer 1242, the second nut 1241 is screwed to the threaded section, the washer 1242 is sleeved on the second protruding end 122 and located between the second nut 1241 and the second abutting portion, and a side surface of the washer 1242 away from the second nut 1241 forms a fourth abutting surface to be abutted and matched with the second abutting portion.

Of course, in other embodiments, the position of the second abutment is movably disposed in the axial direction of the adjustment lever 120 to adjust the spacing between the second abutment and the fourth abutment. The second abutment may be, but is not limited to, a nut that is threaded to the adjustment rod 120 to adjust the spacing between the second abutment and the fourth abutment. Alternatively, in other embodiments, the second abutment and the fourth abutment may both be disposed within the mounting tube 110.

In some embodiments of the present application, an end of the mounting tube 110, which is away from the handle 123, is provided with a ring-shaped end cap 111, and the end cap 111 is sleeved on the outer circumference of the adjusting rod 120. The first contact portion is a first contact surface, and the first contact surface is located on a side of the end cap 111 close to the handle 123, that is, at least a portion of an end surface of the end cap 111 close to the handle 123 constitutes the first contact surface. The outer circumference of the adjusting rod 120 is sleeved with an annular second stop member 126, the second stop member 126 is located in the mounting tube 110, the third abutting portion is a third abutting surface, the third abutting surface is located on one side of the second stop member 126 close to the end cover 111, that is, at least part of the side of the second stop member 126 close to the end cover 111 forms the third abutting surface. The elastic member 130 is sleeved on the outer circumference of the adjustment lever 120, so that the adjustment lever 120 can restrict the movement of the elastic member 130. The second contact portion is a second contact surface, and the second contact surface is located on a side of the end cap 111 away from the handle 123, that is, at least a portion of a side surface of the end cap 111 away from the handle 123 constitutes the second contact surface.

The end cap 111 is fixedly connected with the mounting tube 110, such as but not limited to welding, screwing, or integrally connecting. The second stopper 126 may be, but not limited to, a sheet or plate shape, etc.

In some embodiments of the present application, the magnetic resistance mechanism further includes a limiting member disposed on the mounting tube 110, the limiting member protrudes out of one end of the mounting tube 110 close to the handle 123, and the limiting member is used for limiting and matching with the handle 123.

In this embodiment, by providing the above-mentioned limiting member, the downward movement stroke of the handle 123 can be limited, thereby protecting the user.

The limiting member may be an annular structure or an acyclic structure.

In some embodiments of the present application, the guide sleeve 112 is installed in the installation tube 110, and the guide sleeve 112 is slidably sleeved on the outer circumference of the adjustment rod 120. The guide sleeve 112 serves to guide the axial movement of the adjustment lever 120 to restrict the axial movement of the adjustment lever 120.

Wherein, preferably, referring to fig. 1-2, the guide sleeve 112 is disposed within an end of the mounting tube 110 proximate to the handle 123. The limiting member is a limiting ring 113, and the limiting ring 113 is located on one side of the guide sleeve 112 close to the handle 123.

Referring to fig. 3 and 4, an exercise bike is further provided in the present embodiment, including a frame 200 and a magnetic resistance mechanism, the frame 200 is a mounting base, and the magnetic resistance mechanism is disposed on the frame 200.

Referring to fig. 3-4, the frame 200 of the exercise bicycle preferably includes a down tube 210, and the down tube 210 is also called a down tube or a cross beam. The lower side of lower tube 210 is equipped with second connecting plate 211, and second connecting plate 211 has the mounting hole, and the top that installation pipe 110 was fixed to be inserted and is located lower tube 210 and installation pipe 110 stretches out lower tube 210, and the mounting hole is worn to locate in the pivot activity to make the installation department rotate through the pivot and connect in second connecting plate 211.

It will be understood that any reference to the above orientation or positional relationship as indicated by the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is intended to be based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered as limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means three or more unless otherwise specified.

The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A reluctance mechanism for providing reluctance to a rotor, comprising:

the installation pipe is installed on an installation foundation and provided with a first abutting part and a second abutting part;

the adjusting rod is movably arranged in the mounting tube, two ends of the adjusting rod extend out of the mounting tube, a handle is arranged at a first extending end of the adjusting rod, the adjusting rod is provided with a third abutting part and a fourth abutting part, the third abutting part is positioned on one side, close to the handle, of the first abutting part, and the fourth abutting part is positioned on one side, far away from the handle, of the second abutting part;

magnetic resistance assembly, magnetic resistance assembly includes installation department and magnetic part, the installation department set up in the installation basis, the magnetic part set up in the installation department, the second of adjusting the pole stretch out the end with the installation department spiro union is in order to drive the magnetic part is along being close to or keeping away from runner direction motion.

2. The reluctance mechanism of claim 1, wherein the mounting portion comprises a mounting bracket and a connecting piece, the mounting bracket is rotatably disposed on the mounting base, the magnetic piece is disposed on the mounting bracket, the connecting piece is rotatably connected to the mounting bracket, and the adjusting rod is in threaded connection with the connecting piece.

3. The reluctance mechanism of claim 2, further comprising an angle sensor disposed on one side of the mount in a rotational axis direction thereof.

4. The magnetic resistance mechanism of claim 2, characterized in that, the mounting bracket is equipped with the pivot and passes through the pivot rotate connect in the installation basis, the magnetic resistance mechanism still includes the torsional spring, the torsional spring housing is located the pivot just the both ends of torsional spring connect respectively in the installation basis with the mounting bracket, in order to the mounting bracket provides along keeping away from the elasticity of the direction of rotation of runner.

5. The reluctance mechanism of claim 1, wherein the reluctance assembly further comprises a brake member, the brake member being disposed on the mounting portion.

6. The reluctance mechanism according to any one of claims 1 to 5, wherein at least one of the second abutment portion and the fourth abutment portion is adjustably positioned in an axial direction of the adjustment lever to adjust a distance between the first abutment portion and the third abutment portion.

7. The reluctance mechanism according to claim 6, wherein the second protruding end is screwed with a first annular stopper, and the fourth abutting portion is a fourth abutting surface located on a side of the first stopper close to the handle.

8. The reluctance mechanism according to claim 7, wherein an annular end cap is disposed at an end of the mounting tube away from the handle, the end cap is sleeved on an outer circumference of the adjusting rod, the first abutting portion is a first abutting surface, the first abutting surface is located at a side of the end cap close to the handle, an annular second stop member is sleeved on an outer circumference of the adjusting rod, the second stop member is located in the mounting tube, the third abutting portion is a third abutting surface, the third abutting surface is located at a side of the second stop member close to the end cap, the elastic member is sleeved on an outer circumference of the adjusting rod, the second abutting portion is a second abutting surface, and the second abutting surface is located at a side of the end cap away from the handle.

9. The reluctance mechanism according to claim 1, further comprising a limiting member disposed on the mounting tube, wherein the limiting member protrudes out of an end of the mounting tube close to the handle, and the limiting member is used for limiting and matching with the handle.

10. An exercise bike comprising a reluctance mechanism according to any of claims 1 to 9.