A bicycle and hub assembly

Abstract

The utility model discloses a bicycle and flower drum assembly, and the flower drum assembly includes flower drum seat, sprocket seat and flower drum axle, and is separated and is coupled through one -way clutches between the flower drum seat and sprocket seat, one -way clutches includes: first ratchet, and with the first ratchet is suitable for each other separation or coupling's second ratchet wherein, the first ratchet is configured to with the flower drum seat with the mode of transmission torque is joined, the second ratchet is fixed to the sprocket seat, the first ratchet is configured to along the axial movement of flower drum axle, and the first ratchet and the flower drum seat / second ratchet between configuration has magnetic biasing assembly, and the magnetic biasing assembly includes the magnetic component of pair arrangement, and the magnetic component of pair is configured to with the first ratchet is biased towards the direction of with second ratchet and keeps the engagement. The bicycle flower drum assembly of this patent is through the unique magnetic biasing assembly design, adopts the magnetic component of pair arrangement, and provides the great flexibility for magnetic force adjustment.

Description

Technical Field

[0001] This utility model relates to the technical field of bicycle hub components, and in particular to a bicycle and a hub component. Background Technology

[0002] As a green and environmentally friendly means of transportation and sports equipment, the reliability and efficiency of the bicycle's transmission system directly affect the riding experience. The hub assembly, as the core transmission component of the bicycle's rear wheel, plays a crucial role in transmitting the driving force from the sprocket to the wheel and separating the power during gliding. Its performance depends on the rationality of the one-way clutch mechanism design. Traditional bicycle hubs often employ a combination of spring and ratchet in their one-way clutch mechanism: when the rider pedals, the spring pushes the ratchet to engage and transmit torque; when gliding, the ratchet compresses the spring under the action of the reverse force to disengage. However, as a mechanical elastic component, the spring is prone to fatigue and elasticity decay after long-term use, leading to increased ratchet engagement clearance, transmission noise, or power transmission failure. Especially in bumpy road conditions or high-load riding scenarios, the lifespan of a spring typically does not exceed 3000 kilometers, resulting in high maintenance costs. To address spring fatigue, the industry has seen the emergence of magnetically driven one-way clutch mechanisms. Magnetic drives utilize the magnetic field of permanent magnets to replace the mechanical force of springs, offering advantages such as no contact, no wear, and long lifespan, significantly improving the durability of hub components. Currently, most publicly available magnetic hub structures achieve power coupling through a single magnetic component engaging with a magnetic ratchet assembly. For example, a permanent magnet is fixed to the hub seat, using its attractive force to attract a ratchet with ferromagnetic material, keeping the ratchet engaged. This design reduces mechanical wear by simplifying the structure and has seen initial application in low-load commuter bicycles. The theoretical lifespan of magnetic drives is more than three times that of traditional spring structures.

[0003] A prior art patent, US20090255774A1, discloses a ratchet mechanism for a bicycle rear rack. This ratchet mechanism includes a freewheel, a collar, a ratchet ring, and at least one permanent magnet. The freewheel is mounted around the axle and has multiple wedge-shaped teeth. The collar is magnetic, securely mounted in the hub, and has multiple engaging teeth. The ratchet ring is mounted in the collar and has multiple engaging grooves and multiple ratchet teeth. The engaging grooves engage with the engaging teeth in the collar. The ratchet teeth engage with the wedge teeth on the freewheel. At least one permanent magnet is attached to the ratchet ring to provide magnetic force to move the ratchet ring to the engagement position where the ratchet teeth engage with the wedge teeth on the freewheel. The magnetic properties of the permanent magnet in this patent are relatively fixed. Once installed, its magnetic force and direction are difficult to adjust flexibly according to different riding needs and usage scenarios. For example, in scenarios requiring greater power transmission, such as climbing hills, a stronger ratchet engagement force may be needed, but the prior art cannot easily achieve this magnetic force adjustment, limiting the adaptability of the device to different riding conditions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a bicycle and hub assembly.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A bicycle hub assembly includes a hub seat, a sprocket seat, and a hub shaft. The hub seat and the sprocket seat are separated and coupled by a one-way clutch mechanism, the one-way clutch mechanism comprising: A first ratchet, and a second ratchet adapted to be separable from or coupled to the first ratchet; The first ratchet is configured to engage with the hub in a torque-transmitting manner, the second ratchet is fixed to the sprocket seat, and the first ratchet is configured to be axially movable along the hub shaft. Furthermore, a magnetic biasing assembly is disposed between the first ratchet and the hub / second ratchet, the magnetic biasing assembly including a pair of magnetic components arranged in a pair, the pair of magnetic components being configured to bias the first ratchet toward a direction that engages with the second ratchet.

[0006] Furthermore, the magnetic biasing assembly includes a first magnetic component fixed to the hub seat and a second magnetic component fixed to the side of the first ratchet near the hub seat, wherein the adjacent ends of the first magnetic component and the second magnetic component have opposite polarities.

[0007] Furthermore, the magnetic biasing assembly includes a third magnetic component fixed to the side of the first ratchet near the hub seat and a fourth magnetic component fixed to the side of the second ratchet near the sprocket seat, wherein the adjacent ends of the third magnetic component and the fourth magnetic component have the same polarity.

[0008] A bicycle hub assembly includes a hub seat, a sprocket seat, and a hub shaft. The hub seat and the sprocket seat are separated and coupled by a one-way clutch mechanism, the one-way clutch mechanism comprising: A first ratchet, and a second ratchet adapted to be separable from or coupled to the first ratchet; The first ratchet is configured to engage with the sprocket seat in a torque-transmitting manner, the second ratchet is fixed to the hub seat, and the first ratchet is configured to be axially movable along the hub shaft; and a magnetic biasing assembly is disposed between the first ratchet and the hub seat / second ratchet, the magnetic biasing assembly including a pair of magnetic components arranged in a pair of magnetic components configured to bias the first ratchet toward a direction that engages with the second ratchet.

[0009] Furthermore, the magnetic biasing assembly includes a fifth magnetic component fixed to the sprocket seat and a sixth magnetic component fixed to the side of the first ratchet near the sprocket seat, wherein the polarities of the adjacent ends of the fifth magnetic component and the sixth magnetic component are opposite.

[0010] Furthermore, the magnetic biasing assembly includes a seventh magnetic component fixed to the side of the first ratchet near the sprocket seat and an eighth magnetic component fixed to the side of the second ratchet near the hub seat, wherein the adjacent ends of the seventh magnetic component and the eighth magnetic component have the same polarity.

[0011] Furthermore, the first ratchet has a plurality of first ratchet teeth on its axial side facing the second ratchet, and the second ratchet has a plurality of second ratchet teeth on its axial side facing the first ratchet.

[0012] Furthermore, the hub seat is sleeved on the outside / inside of the sprocket seat via a bearing, and the one-way clutch mechanism is arranged between the hub seat and the sprocket seat.

[0013] Furthermore, the hub / sprocket seat is equipped with an adjustment seat, which is configured to change the distance between the paired magnetic components through a threaded engagement to adjust the magnitude of the force between the adjacent ends of the paired magnetic components.

[0014] A bicycle comprising the hub assembly described above.

[0015] Due to the adoption of the above technical solutions, this utility model has the following beneficial effects: This utility model's bicycle hub assembly features a unique magnetic bias component design, employing paired magnetic parts to provide exceptional flexibility in magnetic force adjustment. By adjusting the relative position and spacing of the paired magnetic parts, or by selecting magnetic parts with different magnetic properties, the magnitude and direction of the magnetic force can be easily altered. When climbing hills, the magnetic force can be increased to enhance ratchet engagement, ensuring efficient power transmission and allowing riders to more easily handle steep inclines. When riding on flat roads or coasting, the magnetic force can be decreased to reduce frictional resistance between the ratchet wheels, improving riding efficiency and reducing energy loss. This flexible magnetic force adjustment capability allows this hub assembly to perfectly adapt to various complex riding scenarios, providing riders with a more comfortable and efficient riding experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0017] Figure 1 This is a three-dimensional structural diagram of the utility model in its stored state.

[0018] Figure 2 This is an exploded view of the structure of this utility model.

[0019] Figure 3 This is a structural diagram of the first ratchet of this utility model.

[0020] Figure 4 This is a structural diagram of the second ratchet of this utility model.

[0021] Figure 5 This is a structural diagram of the flower drum seat of the first embodiment of this utility model.

[0022] Figure 6 This is a structural cross-sectional view of the first embodiment of this utility model.

[0023] Figure 7 This is a cross-sectional view of the structure of the second embodiment of this utility model.

[0024] Figure 8 This is a cross-sectional view of the structure of the third embodiment of this utility model.

[0025] Figure 9 This is a cross-sectional view of the fourth embodiment of the present invention.

[0026] Figure 10 This is an exploded view of the structure of the fifth embodiment of this utility model.

[0027] Figure 11 This is a diagram of the bicycle mounting structure of this utility model.

[0028] Figure 12 This is a cross-sectional view of the bicycle mounting structure of this utility model.

[0029] Figure label: In the diagram, 100. Hub seat; 110. Positioning part; 120. Multi-faceted groove; 200. Sprocket seat; 210. Boss part; 300. Hub shaft; 400. One-way clutch mechanism; 410. First ratchet; 411. First ratchet tooth; 420. Second ratchet; 421. Second ratchet tooth; 500. Magnetic biasing assembly; 501. Magnetic component; 510. First magnetic component; 520. Second magnetic component; 530. Third magnetic component; 540. Fourth magnetic component; 550. Fifth magnetic component; 560. Sixth magnetic component; 570. Seventh magnetic component; 580. Eighth magnetic component; 600. Bearing; 700. Adjustment seat. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or its equivalents, and do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0035] Example 1: Please see Figures 1-6 This utility model discloses a bicycle and a hub assembly. The bicycle hub assembly of this embodiment includes a hub seat 100, a sprocket seat 200, and a hub shaft 300. The hub seat 100 and the sprocket seat 200 are separated and coupled by a one-way clutch mechanism 400. In this embodiment, the hub shaft 300 is disposed inside the hub seat 100. The one-way clutch mechanism 400 includes a first ratchet 410 and a second ratchet 420 adapted to be separated or coupled to each other. The first ratchet 410 is configured to engage with the hub seat 100 in a torque-transmitting manner. In this embodiment, the first ratchet 410 and the hub seat 100 are fixed by a mutually cooperating polygonal groove 120 and a polygonal prism. The hub seat 100 has an octagonal groove inside, and the outer wall of the first ratchet 410 is octagonal prism-shaped. The first ratchet 410 is engaged in the octagonal groove. This fixing method can effectively transmit torque while allowing the first ratchet 410 to move relative to the hub shaft 300 in the axial direction. The first ratchet 410 has a plurality of first ratchet teeth 411 on its axial side facing the second ratchet 420. These first ratchet teeth 411 are evenly distributed on the axial side of the first ratchet 410 and are used to cooperate with the ratchet teeth on the second ratchet 420. In this embodiment, the second ratchet 420 is fixed to the sprocket seat 200 and cannot move in the axial direction of the sprocket shaft. The second ratchet 420 is fixed to the sprocket seat 200 by a key connection, and the sprocket seat 200 has a boss portion 210. The second ratchet 420 is fixedly abutted against the boss portion 210 to ensure that no relative rotation or axial movement occurs during torque transmission. The second ratchet 420 has a plurality of second ratchet teeth 421 on one axial side facing the first ratchet 410. The number and distribution of the second ratchet teeth 421 correspond to the first ratchet teeth 411 to achieve good engagement and disengagement functions. To achieve coupling between the first ratchet 410 and the second ratchet 420, a magnetic biasing assembly 500 is disposed between the first ratchet 410 and the hub 100. The magnetic biasing assembly 500 includes a first magnetic component 510 fixed to the hub 100 and a second magnetic component 520 fixed to the side of the first ratchet 410 near the hub 100. The adjacent ends of the first magnetic component 510 and the second magnetic component 520 have opposite polarities, and the first ratchet 410 is biased in the direction of engagement with the second ratchet 420 by repulsive magnetic force. In this embodiment, the hub 100 has a positioning part 110, to which the first magnetic component 510 is fixed.

[0036] In this embodiment, the hub seat 100 is sleeved on the outside of the sprocket seat 200 via a bearing 600 to generate relative rotation. The bearing 600 is a ring bearing, which ensures smooth relative rotation between the hub seat 100 and the sprocket seat 200. Simultaneously, an adjusting seat 700 is disposed on the hub seat 100. The adjusting seat 700, through a threaded engagement, changes the distance between the first magnetic component 510 and the second magnetic component 520, thereby adjusting the magnitude of the force between them. The adjusting seat 700 is a ring seat with threads on its inner sidewall and is installed on one side of the hub seat 100. By rotating the adjusting seat 700 relative to the hub shaft 100, the position of the first magnetic component 510 can be changed, thereby adjusting the magnetic force to meet different usage requirements. The sprocket mount 200 is rotatably mounted on the hub 100 about the axis of the hub shaft. The sprocket mount 200 has multiple external splines configured to engage with the bicycle's rear sprocket assembly. These external splines have drive surfaces to receive the rotational force from the bicycle's rear sprocket assembly during pedaling. When the rider pedals, the rear sprocket assembly transmits the driving force to the external splines of the sprocket mount 200 via the chain, causing the sprocket mount 200 to rotate. Under normal riding conditions, the first ratchet 410 and the second ratchet 420 are engaged by the magnetic biasing assembly 500. The rotational force of the sprocket mount 200 is transmitted to the first ratchet 410 via the second ratchet 420, and then to the hub 100 via the first ratchet 410, thereby driving the bicycle's rear wheel to rotate. When the rider stops pedaling or pedals backward, due to the characteristics of the one-way clutch mechanism 400, the first ratchet 410 and the second ratchet 420 can be disengaged, and the rotation of the sprocket seat 200 will not be transmitted to the hub seat 100, reducing resistance during gliding.

[0037] Example 2: Please see Figure 7 Unlike Embodiment 1, in this embodiment, the magnetic biasing assembly 500 adopts a different structure, including a third magnetic component 530 fixed to the side of the first ratchet 410 near the hub seat 100 and a fourth magnetic component 540 fixed to the side of the second ratchet 420 near the sprocket seat 200. The adjacent ends of the third magnetic component 530 and the fourth magnetic component 540 have the same polarity. By attracting magnetic force, the first ratchet 410 is biased in the direction that keeps it engaged with the second ratchet 420. The third magnetic component 530 is fixed to the corresponding surface of the first ratchet 410 by embedding, and the fourth magnetic component 540 is fixed to the corresponding surface of the second ratchet 420 by bolts. By changing the position of the third magnetic component 530, the magnetic force can be adjusted to meet different usage requirements. The rest is the same as in Embodiment 1.

[0038] Example 3: Please see Figure 8Unlike Embodiment 1, in this embodiment, the hub shaft 300 is disposed inside the sprocket seat 200. The first ratchet 410 is configured to engage with the sprocket seat 200 in a torque-transmitting manner and is capable of axial relative movement but not relative rotation. The first ratchet 410 and the sprocket seat 200 are fixed by interlocking splines and keyways. The sprocket seat 200 has an internal spline groove, and the first ratchet 410 has an external spline. The first ratchet 410 is inserted into the internal spline groove of the sprocket seat 200 to achieve torque transmission while allowing axial relative movement. The second ratchet 420 is fixed to the hub seat 100 and cannot move or rotate relative to it. The second ratchet 420 is fixed to the hub seat 100 by an interference fit to ensure a secure installation.

[0039] In this embodiment, the structure of the magnetic biasing component 500 is also different. The magnetic biasing component 500 includes a fifth magnetic component 550 fixed to the sprocket seat 200 and a sixth magnetic component 560 fixed to the side of the first ratchet 410 near the sprocket seat 200. The adjacent ends of the fifth magnetic component 550 and the sixth magnetic component 560 have opposite polarities. Through repulsive magnetic force, they bias the first ratchet 410 towards the direction of engagement with the second ratchet 420. The fifth magnetic component 550 is fixed to a specific position in the sprocket seat 200 by bolts, while the sixth magnetic component 560 is fixed to the corresponding surface of the first ratchet 410 by adhesive. By changing the position of the sixth magnetic component 560, the magnetic force can be adjusted to meet different usage requirements.

[0040] The working principle of this embodiment is similar to that of Embodiment 1. During riding, the sprocket seat 200 receives the driving rotational force from the rear sprocket assembly and transmits the rotational force to the hub seat 100 through the one-way clutch mechanism 400, causing the rear wheel of the bicycle to rotate. When the rider stops pedaling or pedals backward, the first ratchet 410 and the second ratchet 420 disengage, reducing sliding resistance.

[0041] Example 4: Please see Figure 9Unlike Embodiment 2, in this embodiment, the magnetic biasing assembly 500 includes a seventh magnetic component 570 fixed to the side of the first ratchet 410 near the sprocket seat 200 and an eighth magnetic component 580 fixed to the side of the second ratchet 420 near the hub seat 100. The seventh magnetic component 570 and the eighth magnetic component 580 have the same polarity at their adjacent ends, and by attracting magnetic force, they bias the first ratchet 410 towards the direction that keeps it engaged with the second ratchet 420. The seventh magnetic component 570 is fixed to the corresponding surface of the first ratchet 410 by adhesive, and the eighth magnetic component 580 is fixed to the corresponding surface of the second ratchet 420 by embedding. By changing the position of the seventh magnetic component 570, the magnetic force can be adjusted to meet different usage requirements.

[0042] Example 5: Please see Figure 10 Unlike Embodiment 1, in this embodiment, the hub 100 is directly attached to the sprocket seat 200 via a one-way clutch mechanism 400. Specifically, the hub 100 has mounting holes for a first ratchet 410 and a second ratchet 420, and another part of the one-way clutch mechanism 400 is mounted on the sprocket seat 200. Furthermore, in this embodiment, the hub shaft 300 is simultaneously connected to both the hub 100 and the sprocket seat 200. The paired magnetic components 501 in the one-way clutch mechanism 400 attract or repel each other to achieve coupling between the first ratchet 410 and the second ratchet 420. This enables connection and relative rotation between the hub 100 and the sprocket seat 200.

[0043] Example 6: Please see Figure 11 , Figure 12The bicycle of this embodiment includes the hub assembly described in any one of embodiments one to four above. The overall structure of the bicycle includes a frame, front wheel, rear wheel, handlebars, seat, transmission system, etc., wherein the hub part of the rear wheel adopts the hub assembly of this utility model. Taking the hub assembly of embodiment one as an example, the hub seat 100 is connected to the spokes of the bicycle's rear wheel, and the sprocket seat 200 is connected to the bicycle's front sprocket and rear sprocket assembly via a chain. When the rider pedals, the front sprocket rotates, driving the rear sprocket assembly to rotate via the chain, and the rear sprocket assembly then transmits the driving force to the sprocket seat 200. When the sprocket seat 200 rotates, the rotational force is transmitted to the hub seat 100 through the action of the one-way clutch mechanism 400 and the magnetic biasing component 500, thereby driving the rear wheel to rotate and propelling the bicycle forward. During riding, when it is necessary to slow down or stop, the rider stops pedaling. At this time, the one-way clutch mechanism 400 activates, the first ratchet 410 and the second ratchet 420 disengage, and the sprocket seat 200 can continue to rotate for a short distance. The rear wheel continues to rotate due to inertia, but the disengagement of the one-way clutch mechanism 400 reduces the resistance during gliding, allowing the bicycle to glide more smoothly. When it is necessary to accelerate again, the rider pedals again, and the rear sprocket assembly drives the sprocket seat 200 to rotate again. The one-way clutch mechanism 400 quickly engages the first ratchet 410 and the second ratchet 420, transmitting rotational force to the hub 100, causing the bicycle to accelerate forward.

[0044] Furthermore, the distance between the magnetic components in the magnetic bias assembly 500 can be adjusted via the adjusting seat 700, thereby changing the magnitude of the magnetic force. Under different riding conditions, such as uphill, downhill, and flat roads, the rider can adjust the magnitude of the magnetic force as needed to obtain optimal riding performance. For example, when going uphill, increasing the magnetic force makes the first ratchet 410 and the second ratchet 420 mesh more tightly, ensuring stable torque transmission; when going downhill or coasting on flat roads, decreasing the magnetic force makes it easier for the first ratchet 410 and the second ratchet 420 to disengage, reducing coasting resistance.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bicycle hub assembly, comprising a hub seat, a sprocket seat, and a hub shaft, wherein the hub seat and the sprocket seat are separated and coupled via a one-way clutch mechanism; characterized in that, The one-way clutch mechanism includes: A first ratchet, and a second ratchet adapted to be separable from or coupled to the first ratchet; The first ratchet is configured to engage with the hub in a torque-transmitting manner, the second ratchet is fixed to the sprocket seat, and the first ratchet is configured to be axially movable along the hub shaft. Furthermore, a magnetic biasing assembly is disposed between the first ratchet and the hub / second ratchet, the magnetic biasing assembly including a pair of magnetic components arranged in a pair, the pair of magnetic components being configured to bias the first ratchet toward a direction that engages with the second ratchet.

2. The hub assembly according to claim 1, characterized in that, The magnetic biasing assembly includes a first magnetic component fixed to the hub and a second magnetic component fixed to the side of the first ratchet near the hub, wherein the adjacent ends of the first magnetic component and the second magnetic component have opposite polarities.

3. The hub assembly according to claim 1, characterized in that, The magnetic biasing assembly includes a third magnetic component fixed to the side of the first ratchet near the hub seat and a fourth magnetic component fixed to the side of the second ratchet near the sprocket seat, wherein the adjacent ends of the third magnetic component and the fourth magnetic component have the same polarity.

4. The hub assembly according to claim 1, characterized in that, The first ratchet has a plurality of first ratchet teeth on its axial side facing the second ratchet, and the second ratchet has a plurality of second ratchet teeth on its axial side facing the first ratchet.

5. The hub assembly according to claim 1, characterized in that, The hub seat is sleeved on the outside / inside of the sprocket seat via a bearing, and the one-way clutch mechanism is arranged between the hub seat and the sprocket seat.

6. The hub assembly according to claim 5, characterized in that, The hub / sprocket seat is equipped with an adjustment seat, which is configured to change the distance between the paired magnetic components through a threaded engagement to adjust the magnitude of the force between the adjacent ends of the paired magnetic components.

7. A bicycle hub assembly, comprising a hub seat, a sprocket seat, and a hub shaft, wherein the hub seat and the sprocket seat are separated and coupled via a one-way clutch mechanism; characterized in that, The one-way clutch mechanism includes: A first ratchet, and a second ratchet adapted to be separable from or coupled to the first ratchet; The first ratchet is configured to engage with the sprocket seat in a torque-transmitting manner, the second ratchet is fixed to the hub seat, and the first ratchet is configured to be axially movable along the hub shaft; and a magnetic biasing assembly is disposed between the first ratchet and the hub seat / second ratchet, the magnetic biasing assembly including a pair of magnetic components arranged in a pair of magnetic components configured to bias the first ratchet toward a direction that engages with the second ratchet.

8. The hub assembly according to claim 7, characterized in that, The magnetic biasing assembly includes a fifth magnetic component fixed to the sprocket seat and a sixth magnetic component fixed to the side of the first ratchet near the sprocket seat, wherein the polarities of the adjacent ends of the fifth and sixth magnetic components are opposite.

9. The hub assembly according to claim 7, characterized in that, The magnetic biasing assembly includes a seventh magnetic component fixed to the side of the first ratchet near the sprocket seat and an eighth magnetic component fixed to the side of the second ratchet near the hub seat, wherein the adjacent ends of the seventh and eighth magnetic components have the same polarity.

10. A bicycle, characterized in that, The bicycle includes the hub assembly as described in any one of claims 1-9.

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