Flywheel assembly and exercise bicycle

Abstract

The utility model relates to a flywheel assembly and an exercise bicycle. The flywheel assembly comprises a flywheel body, a driving shaft and a transmission switching mechanism. A one-way bearing is embedded in an axis opening of the flywheel body; the driving shaft is arranged in the axis opening of the flywheel body in a penetrating mode, and when the driving shaft rotates in the first direction, the flywheel body is driven by the one-way bearing to rotate in the first direction. The transmission switching mechanism comprises a fixed gear and a movable gear, and the fixed gear is fixedly connected with the flywheel body; the movable gear is controlled by the driving shaft to rotate and is further controlled by external force to move in the axial direction of the driving shaft so that the movable gear can be switched between the meshed state and the separated state relative to the fixed gear. When the driving shaft rotates in the second direction, under the condition that the movable gear is meshed with the fixed gear, the driving shaft drives the flywheel body to rotate in the second direction through the movable gear and the fixed gear which are meshed with each other; and under the condition that the movable gear is separated from the fixed gear, the driving shaft freely rotates in the second direction relative to the flywheel body.

Description

Technical Field

[0001] The present disclosure relates to the field of fitness equipment, and in particular, to a flywheel assembly; the present disclosure also relates to a fitness bike. Background Art

[0002] With the improvement of people's living standards, fitness has become an unstoppable trend. Fitness is one of the main ways for humans to enhance their physical fitness.

[0003] Exercise bikes are a common indoor fitness equipment that is becoming more and more popular. As an efficient and convenient aerobic exercise method, they can help people lose fat, shape their bodies, and improve their cardiopulmonary function. Exercise bikes can generate and adjust resistance through a magnetically controlled wheel system to achieve the effect of exercise.

[0004] The magnetic control systems of exercise bikes on the market are mainly divided into those that can only rotate in one direction and those that can rotate in two directions. The two-way rotating magnetic control system means that the user can drive the magnetic control wheel to rotate in both clockwise and counterclockwise directions; the one-way magnetic control system means that the magnetic control wheel can only be driven to rotate in the forward pedaling direction, and the user cannot drive the magnetic control wheel to rotate counterclockwise when pedaling in the reverse direction.

[0005] Existing fitness bikes on the market cannot combine unidirectional magnetic control systems with bidirectional magnetic control systems, and cannot realize free switching of unidirectional and bidirectional magnetic control systems on a fitness bike. Users lose a lot of experience and feelings during riding, and the function and practicality of a fitness bike are not fully utilized. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the present disclosure provides a flywheel assembly and a fitness bike.

[0007] According to a first aspect of the present disclosure, there is provided a flywheel assembly, comprising:

[0008] A flywheel body, wherein a one-way bearing is embedded in the axial opening of the flywheel body;

[0009] A drive shaft, wherein the drive shaft is disposed through an axial opening of the flywheel body, and when the drive shaft rotates in a first direction, the flywheel body is driven to rotate in the first direction through the one-way bearing;

[0010] A transmission conversion mechanism, the transmission conversion mechanism comprising a fixed gear and a movable gear, the fixed gear being fixedly connected to the flywheel body; the movable gear being configured to be controlled to rotate by the drive shaft, and also configured to be controlled to move along the axial direction of the drive shaft by an external force, so as to switch between a meshing state and a disengagement state relative to the fixed gear;

[0011] When the drive shaft rotates in the second direction, when the movable gear is meshed with the fixed gear, the drive shaft drives the flywheel body to rotate in the second direction through the meshed movable gear and the fixed gear; when the movable gear is separated from the fixed gear, the drive shaft rotates freely relative to the flywheel body in the second direction.

[0012] In one embodiment of the present disclosure, the fixed gear is annular, and the inner ring is provided with a driven tooth portion, the outer ring of the movable gear is provided with an active tooth portion, and the active tooth portion is constructed to be embedded in the fixed gear when the movable gear and the fixed gear are engaged.

[0013] In one embodiment of the present disclosure, an inner spline groove is provided on the inner ring of the movable gear; and an outer spline groove matched with the inner spline groove is provided at a position of the drive shaft corresponding to the movable gear.

[0014] In one embodiment of the present disclosure, a circumferential groove is provided on the outer ring of the movable gear;

[0015] The transmission conversion mechanism includes a driving mechanism, the driving mechanism includes a shift fork and a transmission member, the shift fork is configured to be inserted into the circumferential groove and fixedly connected to a fixed end of the transmission member;

[0016] The transmission member is configured to be controlled to move along the axial direction of the drive shaft by an external force, so as to drive the movable gear to move through the shift fork.

[0017] In one embodiment of the present disclosure, the driving mechanism includes a fixed limiting portion and a compression spring disposed in the limiting portion, the second end of the transmission member is disposed in the limiting portion, and the compression spring is sandwiched between the second end of the transmission member and the side wall of the limiting portion;

[0018] The compression spring is configured to push the transmission member to move under its own elastic force so that the movable gear approaches the fixed gear, and to be compressed under the action of an external force so that the movable gear moves away from the fixed gear.

[0019] In one embodiment of the present disclosure, a gasket is sleeved on the outer side of the transmission member, and the gasket is configured to maintain contact with the inner wall of the limiting portion during the movement of the transmission member.

[0020] In one embodiment of the present disclosure, the transmission conversion mechanism further includes an adjustment wire and a wire tube, the adjustment wire is disposed in the wire tube, and a first end of the adjustment wire is fixedly connected to the transmission member;

[0021] At least a portion of the wire tube adjacent to the first end of the adjusting wire is a first section, and the first section is constructed to be parallel to the axial direction of the flywheel body.

[0022] In one embodiment of the present disclosure, a portion of the wire tube other than the first section is a second section configured to extend in a direction perpendicular to the axial direction of the flywheel body.

[0023] In one embodiment of the present disclosure, the transmission conversion mechanism further includes a wire-pulling motor, and the wire-pulling motor is configured to pull the second end of the adjusting wire to move, so as to drive the shift fork to move.

[0024] According to a second aspect of the present disclosure, a fitness bike is provided, comprising the flywheel assembly.

[0025] During the use of the flywheel assembly disclosed in the present invention, when the user uses the one-way flywheel mode, the user only needs to control the movable gear to separate from the fixed gear. In this way, when the user pedals the fitness bike in a first direction and the drive shaft rotates in the first direction, the flywheel body can be driven to rotate in the first direction through the one-way bearing to achieve the purpose of exercise. When the user stops during the pedaling process, the inertia generated by the rotation of the flywheel body will not be transmitted to the drive shaft, and the pedal will not be driven to continue to move, which is convenient for the user to take a short rest.

[0026] When the user uses the two-way flywheel mode, the movable gear can be controlled to mesh with the fixed gear. In this way, no matter the user pedals the bicycle in the first direction or the fitness bike in the second direction, the drive shaft can drive the movable gear to rotate. Since the movable gear is in meshing with the fixed gear and the fixed gear is fixedly connected to the flywheel body, the flywheel body can be driven to rotate through the fixed gear during the rotation of the movable gear. In this way, not only can the purpose of exercise be achieved, but also it is convenient for users to do cycling exercises on the fitness bike, which not only facilitates users to do more exercise movements, but also increases the user's exercise methods, thereby improving the user's exercise experience.

[0027] It can be seen that the flywheel assembly of the present invention can realize the switching between the unidirectional flywheel mode and the bidirectional flywheel mode, thereby enabling an exercise bike to realize two exercise modes at the same time. It is not only convenient for users to use, but also because the mode switching can be achieved only by the movable gear and the fixed gear that can be separably engaged with each other, the overall structure is simple, thereby effectively reducing the processing cost.

[0028] Moreover, it is understandable that for existing exercise bikes that only have a two-way flywheel mode, when the user stops pedaling immediately, the inertia generated by the rotation of the flywheel body will be transmitted to the drive shaft, thereby driving the user's feet to continue moving, which puts the user at risk of injury. Therefore, when the user stops exercising, the user needs to use the brake function to ensure riding safety.

[0029] However, since the flywheel assembly of the present invention can switch between a unidirectional flywheel mode and a bidirectional flywheel mode, when the user is using the bidirectional flywheel mode and suddenly encounters an emergency and needs to stop pedaling immediately, the user can also switch to the unidirectional flywheel mode and stop pedaling. In this way, the inertia generated by the rotation of the flywheel body is prevented from being transmitted to the drive shaft, and the pedals will not be driven to continue moving, thereby avoiding user injuries and improving the safety of the exercise bike.

[0030] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0032] Figure 1 is a stereoscopic diagram of a flywheel assembly and a support assembly provided by an embodiment of the present disclosure;

[0033] Figure 2 is another stereoscopic view of the flywheel assembly and the support assembly provided by the embodiment of the present disclosure;

[0034] Figure 3 is an exploded view of a partial structure of a flywheel assembly provided by an embodiment of the present disclosure;

[0035] Figure 4 is a cross-sectional view of a partial structure of a flywheel assembly provided by an embodiment of the present disclosure;

[0036] Figure 5 is another cross-sectional view of a partial structure of a flywheel assembly provided by an embodiment of the present disclosure;

[0037] Figure 6 is a side view of a flywheel assembly and a support assembly provided by an embodiment of the present disclosure;

[0038] Figure 7 is a cross-sectional view of a flywheel assembly and a support assembly provided by an embodiment of the present disclosure;

[0039] Figure 8 is another cross-sectional view of the flywheel assembly and the support assembly provided by the embodiment of the present disclosure;

[0040] Fig. 9 It is another cross-sectional view of the flywheel assembly and the support assembly provided in the embodiment of the present disclosure.

[0041] Figures 1 to 9 The corresponding relationship between the names of the components and the reference numerals is as follows:

[0042] 10. Flywheel assembly; 11. Flywheel body; 12. Drive shaft; 121. External spline groove; 122. Flat key; 13. One-way bearing; 14. Fixed gear; 141. Driven gear; 15. Movable gear; 151. Active gear; 152. Internal spline groove; 153. Circumferential groove; 161. Fork; 162. Transmission member; 163. Limiting part; 164. Compression spring; 165. Gasket; 171. Adjusting cable; 172. Cable tube; 1 721, first section; 1722, second section; 18, driving wheel; 19, auxiliary support bearing; 20, support assembly; 211, first bracket; 2111, fixed bracket; 212, second bracket; 213, bayonet; 221, first bearing fixing seat; 222, second bearing fixing seat; 223, clamping part; 224, fixing part; 231, first support bearing; 232, second support bearing; 24, fixing piece; 30, magnetic resistance assembly. DETAILED DESCRIPTION

[0043] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0044] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0045] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0046] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0047] The specific embodiments of the present disclosure are described below in conjunction with the accompanying drawings.

[0048] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0049] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the premise of each other's existence.

[0050] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0051] The present disclosure provides a flywheel assembly, which can be applied to exercise bikes such as spinning bikes, and at least includes a flywheel body, a drive shaft, and a transmission conversion mechanism. A one-way bearing is embedded in the axial opening of the flywheel body; the drive shaft penetrates the axial opening of the flywheel body, and the drive shaft is configured to drive the flywheel body to rotate in the first direction through the one-way bearing when rotating in the first direction.

[0052] The transmission conversion mechanism includes a fixed gear and a movable gear, and the fixed gear is fixedly connected to the flywheel body; the movable gear is configured to be controlled to rotate by the drive shaft, and is also constructed to be controlled to move axially along the drive shaft by an external force, so as to switch between an engaged and disengaged state relative to the fixed gear; wherein, when the drive shaft rotates in the second direction, when the movable gear is engaged with the fixed gear, the drive shaft drives the flywheel body to rotate in the second direction through the engaged movable gear and the fixed gear; when the movable gear is disengaged from the fixed gear, the drive shaft rotates freely relative to the flywheel body in the second direction.

[0053] It is understandable that when the flywheel assembly of the present disclosure is applied to an exercise bike such as a spinning bike, the exercise bike is also provided with devices such as pedals, and the user drives the drive shaft to rotate by stepping on the pedals.

[0054] Thus, during the use of the flywheel assembly of the present disclosure, when the user uses the one-way flywheel mode, the user only needs to control the movable gear to separate from the fixed gear, so that when the user pedals the fitness bike in the first direction and the drive shaft rotates in the first direction, the flywheel body can be driven to rotate in the first direction through the one-way bearing, thereby achieving the purpose of exercise. When the user stops during the pedaling process, the inertia generated by the rotation of the flywheel body will not be transmitted to the drive shaft, and the pedal will not be driven to continue to move, which is convenient for the user to take a short rest.

[0055] When the user uses the two-way flywheel mode, the movable gear can be controlled to mesh with the fixed gear. In this way, no matter the user pedals the bicycle in the first direction or the fitness bike in the second direction, the drive shaft can drive the movable gear to rotate. Since the movable gear is in meshing with the fixed gear and the fixed gear is fixedly connected to the flywheel body, the flywheel body can be driven to rotate through the fixed gear during the rotation of the movable gear. In this way, not only can the purpose of exercise be achieved, but also it is convenient for users to do cycling exercises on the fitness bike, which not only facilitates users to do more exercise movements, but also increases the user's exercise methods, thereby improving the user's exercise experience.

[0056] It can be seen that the flywheel assembly of the present invention can realize the switching between the unidirectional flywheel mode and the bidirectional flywheel mode, thereby enabling an exercise bike to realize two exercise modes at the same time. It is not only convenient for users to use, but also because the mode switching can be achieved only by the movable gear and the fixed gear that can be separably engaged with each other, the overall structure is simple, thereby effectively reducing the processing cost.

[0057] Moreover, it is understandable that for existing exercise bikes that only have a two-way flywheel mode, when the user stops pedaling immediately, the inertia generated by the rotation of the flywheel body will be transmitted to the drive shaft, thereby driving the user's feet to continue moving, which puts the user at risk of injury. Therefore, when the user stops exercising, the user needs to use the brake function to ensure riding safety.

[0058] However, since the flywheel assembly of the present invention can switch between a unidirectional flywheel mode and a bidirectional flywheel mode, when the user is using the bidirectional flywheel mode and suddenly encounters an emergency and needs to stop pedaling immediately, the user can also switch to the unidirectional flywheel mode and stop pedaling. In this way, the inertia generated by the rotation of the flywheel body is prevented from being transmitted to the drive shaft, and the pedals will not be driven to continue moving, thereby avoiding user injuries and improving the safety of the exercise bike.

[0059] For ease of understanding, refer to Figures 1 to 9 , the specific structure and working principle of the flywheel assembly of the present disclosure are described in detail in combination with an embodiment. It should be noted that the present disclosure also provides a fitness bike. In order to keep the text concise, this article introduces the fitness bike together with the description of the flywheel assembly.

[0060] like Figure 1 and Figure 2 As shown, the present disclosure provides a flywheel assembly 10, which can be applied to exercise bikes such as spinning bikes. It is understandable that the exercise bike of the present disclosure also includes structures such as handlebars, a seat, a belt pulley, and pedals. In one embodiment of the present disclosure, the pedal is connected to the belt pulley, and an active belt is sleeved between the belt pulley and the drive shaft 12 of the flywheel assembly 10. When a user uses the exercise bike, the user will sit on the seat, hold the handlebars, and step on the pedals with both feet to rotate the belt pulley, thereby driving the drive shaft 12 to rotate through the active belt. In another embodiment of the present disclosure, the pedal can also be directly set on the drive shaft 12 to directly drive the drive shaft 12 to rotate; other structures can also be used to drive the drive shaft 12 to rotate, which is not limited here.

[0061] like Figures 3 to 7As shown, the flywheel assembly 10 at least includes a flywheel body 11, a drive shaft 12 and a transmission conversion mechanism. A one-way bearing 13 is embedded in the axial opening of the flywheel body 11; the drive shaft 12 is inserted into the axial opening of the flywheel body 11, and the drive shaft 12 is configured to drive the flywheel body 11 to rotate in the first direction through the one-way bearing 13 when rotating in the first direction.

[0062] like Figure 1 and Figure 2 As shown, it can be understood that the flywheel body 11 can be made of a metal material, and the fitness bike of the present disclosure can be provided with a magnetic resistance component 30, which can generate a magnetic field at the flywheel body 11. In this way, during the rotation of the flywheel body 11, the magnetic field generated by the magnetic resistance component 30 will be cut, thereby forming a resistance that hinders the rotation of the flywheel body 11, thereby satisfying the user's exercise purpose. Moreover, by controlling the strength of the magnetic field generated by the magnetic resistance component 30, the size of the resistance that hinders the rotation of the flywheel body 11 can be adjusted, thereby further satisfying the user's various exercise needs.

[0063] like Figures 3 to 5 As shown, the transmission conversion mechanism includes a fixed gear 14 and a movable gear 15, and the fixed gear 14 is fixedly connected to the flywheel body 11; the movable gear 15 is configured to be controlled to rotate by the drive shaft 12, and is also constructed to be controlled to move axially along the drive shaft 12 by an external force, so as to switch between a meshing state and a disengagement state relative to the fixed gear 14; wherein, when the drive shaft 12 rotates along the second direction, when the movable gear 15 is meshed with the fixed gear 14, the drive shaft 12 drives the flywheel body 11 to rotate along the second direction through the meshing movable gear 15 and the fixed gear 14; when the movable gear 15 is disengaged from the fixed gear 14, the drive shaft 12 rotates freely relative to the flywheel body 11 along the second direction.

[0064] It is understandable that when the flywheel assembly 10 of the present disclosure is applied to a fitness bike such as a spinning bike, the fitness bike is also provided with devices such as pedals, and the user drives the drive shaft 12 to rotate by stepping on the pedals.

[0065] Thus, during the use of the flywheel assembly 10 of the present disclosure, when the user uses the one-way flywheel mode, the user only needs to control the movable gear 15 to separate from the fixed gear 14. Thus, when the user pedals the fitness bike in the first direction and the drive shaft 12 rotates in the first direction, the flywheel body 11 can be driven to rotate in the first direction through the one-way bearing 13, thereby achieving the purpose of exercise. When the user stops during the pedaling process, the inertia generated by the rotation of the flywheel body 11 will not be transmitted to the drive shaft 12, and the pedal will not be driven to continue to move, which is convenient for the user to take a short rest.

[0066] When the user uses the two-way flywheel mode, the movable gear 15 can be controlled to mesh with the fixed gear 14. In this way, when the user pedals the bicycle in the first direction or the fitness bike in the second direction, the drive shaft 12 can drive the movable gear 15 to rotate. Since the movable gear 15 is in a meshing state with the fixed gear 14, and the fixed gear 14 is fixedly connected to the flywheel body 11, the flywheel body 11 can be driven to rotate through the fixed gear 14 during the rotation of the movable gear 15. In this way, not only can the purpose of exercise be achieved, but also it is convenient for users to do cycling exercises on the fitness bike, which is convenient for users to do more exercise movements and can also increase the user's exercise methods, thereby improving the user's exercise experience.

[0067] It can be seen that the flywheel assembly 10 of the present invention can realize the switching between the unidirectional flywheel mode and the bidirectional flywheel mode, thereby enabling a fitness bike to realize two sports modes at the same time. It is not only convenient for users to use, but also because the mode switching can be achieved only by the movable gear 15 and the fixed gear 14 that can be detachably engaged with each other, the overall structure is simple, thereby effectively reducing the processing cost.

[0068] Moreover, it is understandable that for the existing fitness bikes with only a two-way flywheel mode, when the user stops pedaling immediately, the inertia generated by the rotation of the flywheel body 11 will be transmitted to the drive shaft 12, thereby driving the user's feet to continue moving, which puts the user at risk of injury. Therefore, when the user stops exercising, the brake function needs to be used to ensure riding safety.

[0069] However, since the flywheel assembly 10 of the present invention can switch between the unidirectional flywheel mode and the bidirectional flywheel mode, when the user uses the bidirectional flywheel mode and suddenly encounters an emergency and needs to stop pedaling immediately, the user can also switch to the unidirectional flywheel mode and stop pedaling. In this way, the inertia generated by the rotation of the flywheel body 11 is prevented from being transmitted to the drive shaft 12, and the pedals will not be driven to continue moving, thereby avoiding user injuries and improving the safety of the exercise bike.

[0070] Among them, Figure 3 and Figure 5 As shown, in one embodiment of the present disclosure, the fixed gear 14 is annular, and the inner ring is provided with a driven tooth portion 141, the outer ring of the movable gear 15 is provided with a driving tooth portion 151, and the driving tooth portion 151 is constructed to be embedded in the fixed gear 14 when the movable gear 15 and the fixed gear 14 are engaged.

[0071] In this way, when the movable gear 15 needs to mesh with the fixed gear 14, the movable gear 15 can move along the axial direction of the drive shaft 12, so that the active tooth portion 151 of the movable gear 15 is embedded in the driven tooth portion 141 of the fixed gear 14, thereby realizing the meshing of the movable gear 15 and the fixed gear 14. When the movable gear 15 and the fixed gear 14 need to be separated, the movable gear 15 can move along the axial direction of the drive shaft 12, so that the active tooth portion 151 of the movable gear 15 is disengaged from the driven tooth portion 141 of the fixed gear 14, thereby realizing the separation of the movable gear 15 and the fixed gear 14. It can be understood that, as Figure 5 As shown, the active tooth portion 151 and the driven tooth portion 141 may both adopt a straight tooth structure, or may adopt other tooth shapes, which is not limited here.

[0072] The movable gear 15 and the fixed gear 14 of the present invention can transmit power through the embedded and matched active gear portion 151 and the driven gear portion 141, which can effectively reduce power loss and also reduce the wear of the movable gear 15 and the fixed gear 14 during operation.

[0073] like Figure 3 As shown, in one embodiment of the present disclosure, an inner spline groove 152 is provided on the inner ring of the movable gear 15; and an outer spline groove 121 matching the inner spline groove 152 is provided on the driving shaft 12 at a position corresponding to the movable gear 15. By providing matching inner spline grooves 152 and outer spline grooves 121 on the movable gear 15 and the driving shaft 12, it is convenient for the driving shaft 12 to drive the movable gear 15 to rotate, thereby driving the driven gear to rotate. Moreover, the movable gear 15 can move on the driving shaft 12 through the inner spline groove 152, thereby achieving the purpose of moving the movable gear 15 along the axial direction of the driving shaft 12, and the movable gear 15 can be switched between the state of meshing and separation with the fixed gear 14.

[0074] In order to drive the movable gear 15 to move along the axial direction of the driving shaft 12, as shown in FIG. Figure 1 and Figure 3 As shown, in one embodiment of the present disclosure, a circumferential groove 153 is provided on the outer ring of the movable gear 15; the transmission conversion mechanism includes a driving mechanism, the driving mechanism includes a shift fork 161 and a transmission member 162, the shift fork 161 is configured to be inserted into the circumferential groove 153 and fixedly connected to the fixed end of the transmission member 162; the transmission member 162 is configured to be controlled by an external force to move along the axial direction of the drive shaft 12, so as to drive the movable gear 15 to move through the shift fork 161.

[0075] When it is necessary to drive the movable gear 15 to move axially along the driving shaft 12, the transmission member 162 can be moved axially along the driving shaft 12. Since the shift fork 161 is inserted into the circumferential groove 153 of the outer ring of the movable gear 15 and is fixedly connected to the fixed end of the transmission member 162, when the transmission member 162 moves axially along the driving shaft 12, the shift fork 161 can abut against the side of the circumferential groove 153, thereby driving the movable gear 15 to move axially along the driving shaft 12.

[0076] Moreover, since the groove formed on the outer ring of the movable gear 15 is a circumferential groove 153, when the driving shaft 12 drives the movable gear 15 to rotate, although the shift fork 161 is located in the circumferential groove 153, there is no power transmission between the two, and the shift fork 161 will not hinder the normal rotation of the movable gear 15.

[0077] Furthermore, since the shift fork 161 will not hinder the normal rotation of the movable gear 15, the shift fork 161 can also drive the movable gear 15 to move along the axial direction of the drive shaft 12 during the process of the drive shaft 12 driving the movable gear 15 to rotate. In this way, when the user uses the two-way flywheel mode, the movable gear 15 and the fixed gear 14 are meshed with each other, and the movable gear 15 continues to drive the fixed gear 14 to rotate. The shift fork 161 can drive the movable gear 15 away from the fixed gear 14 to separate the movable gear 15 from the fixed gear 14, thereby switching the flywheel assembly 10 of the present disclosure to the one-way flywheel mode. In this way, even if the user stops pedaling immediately, the inertia generated by the rotation of the flywheel body 11 will not be transmitted to the drive shaft 12, and the pedal will not be driven to continue to move, thereby avoiding injuries to the user.

[0078] Specifically, Figure 7 and Fig. 9 As shown, in one embodiment of the present disclosure, the driving mechanism includes a fixed limiting portion 163 and a compression spring 164 arranged in the limiting portion 163, the second end of the transmission member 162 is arranged in the limiting portion 163, and the compression spring 164 is clamped between the second end of the transmission member 162 and the side wall of the limiting portion 163; the compression spring 164 is constructed to push the transmission member 162 to move under the action of its own elastic force so that the movable gear 15 is close to the fixed gear 14, and is compressed under the action of external force so that the movable gear 15 is away from the fixed gear 14.

[0079] By providing the compression spring 164, the compression spring 164 can be used to push the transmission member 162 to move, thereby driving the movable gear 15 to engage with the fixed gear 14. When the movable gear 15 needs to be separated from the fixed gear 14, it is only necessary to use an external force to pull the transmission member 162 and compress the compression spring 164 to achieve the separation of the movable gear 15 from the fixed gear 14. It can be understood that in order to ensure that the fork 161 and the transmission member 162 move along the axial direction of the drive shaft 12, the extension direction of the limit portion 163 must be ensured to be parallel to the axial direction of the drive shaft 12.

[0080] Further, such as Figure 7 and Fig. 9 As shown, in one embodiment of the present disclosure, a gasket 165 is sleeved on the outer side of the transmission member 162, and the gasket 165 is configured to maintain contact with the inner wall of the limiting portion 163 during the movement of the transmission member 162. Compared with the transmission member 162 directly cooperating with the inner wall of the limiting portion 163, by sleeved on the outer side of the transmission member 162, the gasket 165 is maintained in contact with the inner wall of the limiting portion 163, which can not only ensure that the transmission member 162 moves along the extension direction of the limiting portion 163, but also effectively reduce friction, so that the movement of the transmission member 162 is smoother. Specifically, a retaining spring can be provided on the transmission member 162 to fix the gasket 165 on the transmission member 162 to prevent the gasket 165 from moving relative to the transmission member 162.

[0081] Specifically, Figure 1 As shown, in one embodiment of the present disclosure, the transmission conversion mechanism also includes an adjustment cable 171 and a cable tube 172, the adjustment cable 171 is arranged in the cable tube 172, and the first end is fixedly connected to the transmission member 162; and the partial section of the cable tube 172 at least adjacent to the first end of the adjustment cable 171 is the first section 1721, and the first section 1721 is constructed to be parallel to the axial direction of the flywheel body 11. It can be understood that the adjustment cable 171 is usually a flexible structure such as a wire rope, which can be bent along the cable tube 172 without generating a large pulling resistance. Since the first section 1721 of the cable tube 172 is constructed to be parallel to the axial direction of the flywheel body 11, the first end of the adjustment cable 171 is fixedly connected to the transmission member 162, so that when the adjustment cable 171 is pulled, the transmission member 162 can be pulled to move along the axial direction of the flywheel body 11, thereby pulling the movable gear 15 to move.

[0082] like Fig. 9 As shown, in one embodiment of the present disclosure, the portion of the wire tube 172 other than the first section 1721 is the second section 1722 which is configured to extend in an axial direction perpendicular to the flywheel body 11 .

[0083] It is understandable that for fitness bike equipment, the extension length in the direction of the axial direction of the flywheel body 11 is generally shorter, and the extension length in the horizontal direction and height direction perpendicular to the axial direction of the flywheel body 11 is longer. In this way, since the second section 1722 of the cable tube 172 extends in the axial direction perpendicular to the flywheel body 11, the extension length of the cable tube 172 in the axial direction of the flywheel body 11 can be greatly reduced, thereby effectively reducing the space occupied by the fitness bike of the present disclosure in the axial direction of the flywheel assembly 10, which not only makes the fitness bike of the present disclosure more compact and beautiful, but also facilitates the user to store the fitness bike of the present disclosure. Specifically, the length of the first section 1721 can be set as needed, and is not limited here.

[0084] Specifically, various mechanisms can be used to pull the adjustment wire 171 in the wire tube 172. In one embodiment of the present disclosure, the transmission conversion mechanism also includes a wire motor, which is configured to pull the second end of the adjustment wire 171 to move, so as to drive the fork 161 to move. Specifically, the wire motor can rotate in two directions, thereby driving the movable gear 15 to move in two directions close to and away from the fixed gear 14 by winding or releasing the adjustment wire 171; or, the wire motor can be a telescopic motor, thereby directly driving the movable gear 15 to move in two directions close to and away from the fixed gear 14 by pulling the adjustment wire 171.

[0085] In another embodiment of the present disclosure, the transmission conversion mechanism also includes manual pulling devices such as pulling knobs and pulling levers. It is sufficient to ensure that the pulling device can pull the adjustment wire 171 and hold the adjustment wire 171 stationary so that the movable gear 15 can maintain the set position, thereby maintaining the state in which the movable gear 15 is separated from the fixed gear 14.

[0086] It is understandable that since the fitness bike of the present invention remains stationary as a whole during use, Figure 1 and Figure 2 As shown, in one embodiment of the present disclosure, the fitness bike of the present disclosure also includes a support assembly 20, the support assembly 20 includes a first bracket 211 and a second bracket 212, and the flywheel body 11 is clamped between the first bracket 211 and the second bracket 212; a first bearing fixing seat 221 is provided on the first bracket 211, and a second bearing fixing seat 222 is provided on the second bracket 212, a first support bearing 231 is provided on the first bearing fixing seat 221, and a second support bearing 232 is provided on the second bearing fixing seat 222, and the drive shaft 12 is rotatably provided on the first bearing fixing seat 221 and the second bearing fixing seat 222 through the first support bearing 231 and the second support bearing 232.

[0087] In this way, the fitness bike of the present invention can be fixed on the mounting surface through the support assembly 20, and the flywheel body 11 and the drive shaft 12 can also rotate relative to the support assembly 20 by using the first support bearing 231 and the second support bearing 232. In this way, when the user is using the fitness bike, when the user's pedaling amplitude is relatively large, or the pedaling force of the two feet is uneven, the support assembly 20 can also effectively ensure that the fitness bike can move stably, effectively avoid abnormal noise from the fitness bike, effectively ensure the user's safety, and improve the user's experience.

[0088] In order to fix the first bearing fixing seat 221 and the second bearing fixing seat 222, as shown in FIG. Figure 2 As shown, in one embodiment of the present disclosure, the upper ends of the first bracket 211 and the second bracket 212 are both provided with an upwardly open bayonet 213; the first bearing fixing seat 221 and the second bearing fixing seat 222 both include a circular clamping portion 223 and a fixing portion 224, the fixing portion 224 of the first bearing fixing seat 221 is constructed to be fixedly connected to the first bracket 211, and the clamping portion 223 of the first bearing fixing seat 221 is constructed to be clamped into the bayonet 213 of the first bracket 211; the fixing portion 224 of the second bearing fixing seat 222 is constructed to be fixedly connected to the second bracket 212, and the clamping portion 223 of the second bearing fixing seat 222 is constructed to be clamped into the bayonet 213 of the second bracket 212.

[0089] In this way, the first bracket 211 and the second bracket 212 can support the first bearing fixing seat 221 and the second bearing fixing seat 222 through the bayonet 213, so that the first bracket 211 and the second bracket 212 can bear the weight of the entire flywheel assembly 10, and can use the fixing part 224 of the first bearing fixing seat 221 and the fixing part 224 of the second bearing fixing seat 222 to be fixed on the first bracket 211 and the second bracket 212 respectively, so as to use the first bracket 211 and the second bracket 212 to limit the shaking of the entire flywheel assembly 10 in the horizontal direction, so that the user can keep the fitness bike still better during the use of the fitness bike of the present disclosure.

[0090] Further, such as Figure 6 As shown, in one embodiment of the present disclosure, a fixing member 24 is fixedly disposed between the first bracket 211 and the second bracket 212, and the fixing member 24 is configured to be respectively fixedly connected to the first bracket 211 and the second bracket 212. In this way, the fixing strength between the first bracket 211 and the second bracket 212 can be enhanced, so that the fitness vehicle of the present disclosure is more stable to remain stationary.

[0091] Further, such as Figure 1As shown, the fixed gear 14 and the movable gear 15 are both located on one side of the flywheel body 11 adjacent to the first bearing fixing seat 221; a gap is formed between the first bearing fixing seat 221 and the flywheel body 11 for the movable gear 15 to move. By forming a gap between the first bearing fixing seat 221 and the flywheel body 11 for the movable gear 15 to move, the movable gear 15 can be easily moved along the axial direction of the flywheel body 11, thereby switching between a state of separation or engagement with the fixed gear 14.

[0092] like Figure 2 As shown, since the first bearing fixing seat 221 is provided with a movable gear 15 and a fixed gear 14, as shown in FIG. Figure 1 As shown, in one embodiment of the present disclosure, a driving wheel 18 is provided on one side of the drive shaft 12 adjacent to the second bearing fixing seat 222, and the driving wheel 18 is configured to rotate under the action of an external force. Specifically, the fitness bike of the present disclosure may also include structures such as a belt pulley and a pedal, and the pedal is connected to the belt pulley, and a driving belt is sleeved between the belt pulley and the driving wheel 18, so that when the user uses the fitness bike, the user's two feet step on the pedals respectively to rotate the belt pulley, and then the driving wheel 18 is driven to rotate by the driving belt. It is understandable that the difference in size between the main belt pulley and the driving wheel 18 can be set to be larger, so that when the user steps on one circle, the driving wheel 18 can drive the flywheel body 11 to rotate multiple circles, thereby providing the user with a suitable rotation resistance to meet the user's exercise needs. In another embodiment of the present disclosure, the driving wheel 18 can also be arranged on the same side as the movable gear 15 and the fixed gear 14.

[0093] like Figure 3 As shown, in one embodiment of the present disclosure, in order to fix the driving wheel 18 on the driving shaft 12, a flat key 122 can be provided between the driving wheel 18 and the driving shaft 12, and the driving wheel 18 can be fixed on the driving shaft 12 by using the flat key 122. In another embodiment of the present disclosure, the driving wheel 18 can also be fixed on the driving shaft 12 by other methods, which are not limited here.

[0094] In order to bear the weight of the flywheel body 11 and other structures, Figure 7 and Figure 8 As shown, in one embodiment of the present disclosure, an auxiliary support bearing 19 is also embedded in the axial opening of the flywheel body 11, and the drive shaft 12 is constructed to be simultaneously penetrated in the one-way bearing 13 and the auxiliary support bearing 19. By arranging the auxiliary support bearing 19 between the drive shaft 12 and the flywheel body 11, the auxiliary support bearing 19 can bear the weight of the flywheel body 11 and other structures together with the one-way bearing 13. In fact, the weight of the flywheel body 11 is mainly borne by the auxiliary support bearing 19, and the one-way bearing 13 mainly bears the role of driving the flywheel body 11 to rotate along the first direction.

[0095] Furthermore, in one embodiment of the present disclosure, two auxiliary support bearings 19 may be provided, and the two auxiliary support bearings 19 are respectively provided on both sides of the one-way bearing 13, and are arranged parallel to the one-way bearing 13. In this way, the two auxiliary support bearings 19 can jointly bear the weight of the flywheel body 11 and the driven wheel, thereby improving the service life of the flywheel assembly 10 of the present disclosure.

[0096] Among them, Figure 1 As shown, in order to fix the wire tube 172 and the limiting portion 163, in one embodiment of the present disclosure, the limiting portion 163 is fixedly disposed on the first bracket 211, and a fixing bracket 2111 is disposed on the first bracket 211, and one end of the wire tube 172 is fixedly disposed on the fixing bracket 2111. In this way, during the movement of the transmission member 162, the limiting portion 163 and the wire tube 172 can always remain fixed, and only the internal adjustment wire 171 moves with the transmission member 162.

[0097] Specifically, Figure 7 As shown, in one embodiment of the present disclosure, the magnetic resistance component 30 is configured to be fixed to the first bracket 211 and the second bracket 212, respectively, and is arranged facing the outer annular surface of the flywheel body 11. Since the magnetic resistance component 30 is fixed to the first bracket 211 and the second bracket 212, respectively, and is arranged facing the outer annular surface of the flywheel body 11, it can be ensured that during the rotation of the flywheel body 11, the magnetic resistance component 30 is always in close contact with the flywheel body 11, so that the magnetic field generated by the magnetic resistance component 30 can act on the flywheel body 11 to the greatest extent, so as to generate resistance that hinders the rotation of the flywheel body 11.

[0098] It is understandable that in one embodiment of the present disclosure, a generator wheel can also be provided on the drive shaft 12, and a generator belt is provided on the generator wheel, and is in transmission connection with the generator mechanism. In this way, the flywheel assembly 10 of the present disclosure can also generate electricity through the generator belt during the rotation of the drive shaft 12, so that the fitness bike of the present disclosure can work without external power plugging, making the fitness bike of the present disclosure more convenient to use.

[0099] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A flywheel assembly, characterized in that: include: A flywheel body (11), wherein a one-way bearing (13) is embedded in an axial opening of the flywheel body (11); a drive shaft (12), the drive shaft (12) being disposed through an axial opening of the flywheel body (11), and the drive shaft (12) being configured to drive the flywheel body (11) to rotate in the first direction through the one-way bearing (13); A transmission conversion mechanism, the transmission conversion mechanism comprising a fixed gear (14) and a movable gear (15), the fixed gear (14) being fixedly connected to the flywheel body (11); the movable gear (15) being configured to be controlled to rotate by the drive shaft (12), and also being configured to be controlled to move along the axial direction of the drive shaft (12) by an external force, so as to switch between a meshing state and a disengagement state relative to the fixed gear (14); When the drive shaft (12) rotates in the second direction, when the movable gear (15) is meshed with the fixed gear (14), the drive shaft (12) drives the flywheel body (11) to rotate in the second direction through the meshed movable gear (15) and the fixed gear (14); when the movable gear (15) is separated from the fixed gear (14), the drive shaft (12) is free to rotate relative to the flywheel body (11) in the second direction.

2. The flywheel assembly according to claim 1, characterized in that: The fixed gear (14) is annular, and the inner ring is provided with a driven tooth portion (141), the outer ring of the movable gear (15) is provided with a driving tooth portion (151), and the driving tooth portion (151) is configured to be embedded in the fixed gear (14) when the movable gear (15) and the fixed gear (14) are meshed.

3. The flywheel assembly according to claim 2, characterized in that: An inner spline groove (152) is provided on the inner ring of the movable gear (15); and an outer spline groove (121) matching the inner spline groove (152) is provided on the driving shaft (12) at a position corresponding to the movable gear (15).

4. The flywheel assembly according to claim 2, characterized in that: A circumferential groove (153) is provided on the outer ring of the movable gear (15); The transmission conversion mechanism comprises a driving mechanism, the driving mechanism comprises a shift fork (161) and a transmission member (162), the shift fork (161) being configured to be inserted into the circumferential groove (153) and fixedly connected to a fixed end of the transmission member (162); The transmission member (162) is configured to be controlled by an external force to move along the axial direction of the drive shaft (12) so as to drive the movable gear (15) to move via the shift fork (161).

5. The flywheel assembly according to claim 4, characterized in that: The driving mechanism comprises a fixed limiting portion (163) and a compression spring (164) arranged in the limiting portion (163); the second end of the transmission member (162) is arranged in the limiting portion (163), and the compression spring (164) is sandwiched between the second end of the transmission member (162) and the side wall of the limiting portion (163); The compression spring (164) is configured to push the transmission member (162) to move under the action of its own elastic force so that the movable gear (15) approaches the fixed gear (14), and to be compressed under the action of an external force so that the movable gear (15) moves away from the fixed gear (14).

6. The flywheel assembly according to claim 5, characterized in that: A gasket (165) is sleeved on the outside of the transmission member (162), and the gasket (165) is configured to maintain contact with the inner wall of the limiting portion (163) during the movement of the transmission member (162).

7. The flywheel assembly according to claim 5, characterized in that The transmission conversion mechanism further comprises an adjusting wire (171) and a wire tube (172); the adjusting wire (171) is arranged in the wire tube (172), and a first end of the adjusting wire (171) is fixedly connected to the transmission member (162); At least a portion of the wire tube (172) adjacent to the first end of the adjustment wire (171) is a first section (1721), and the first section (1721) is constructed to be parallel to the axial direction of the flywheel body (11).

8. The flywheel assembly according to claim 7, characterized in that The portion of the wire tube (172) other than the first section (1721) is a second section (1722) which is constructed to extend in an axial direction perpendicular to the flywheel body (11).

9. The flywheel assembly according to claim 7, characterized in that: The transmission conversion mechanism also includes a wire-pulling motor, which is configured to pull the second end of the adjusting wire (171) to move, thereby driving the shift fork (161) to move.

10. A fitness bike, characterized in that: A flywheel assembly (10) comprising any one of claims 1 to 9.

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