CN214355338U - Hub, hub unit, wheel assembly and bicycle - Google Patents

Abstract

The embodiment of the disclosure provides a hub, a hub unit, a wheel assembly and a bicycle. The hub is intended to be detachably mounted in a hub and comprises a hub shell, the outer surface of which is provided with an external thread for connection to the hub, the hub shell being constructed such that at least two different parts have a tendency to rotate in opposite directions relative to the hub, or the hub shell and the hub are further provided with rotation stop means. The hub of the embodiment of the disclosure, the rotation stopping component has the effect of preventing the rotation of the hub shell, so that when the bicycle runs on an uneven road surface and is violently bumped, the hub can not rotate relative to the hub, and the hub is prevented from loosening and causing danger.

Description

Hub, hub unit, wheel assembly and bicycle

Technical Field

The embodiment of the disclosure relates to a vehicle technology, in particular to a hub, a hub unit, a wheel assembly and a bicycle.

Background

The traditional bicycle comprises two wheels, wherein a wheel shaft is arranged at the wheel center of each wheel and penetrates through a wheel hub of each wheel, and a bearing is sleeved on each wheel shaft and is connected with the wheel hub through the bearing. However, when the wheel is impacted, the impact force is directly transmitted to the bearing through the hub, so that the bearing is easy to damage.

In the related art, a hub is used to solve this problem. The flower-drum includes the flower-drum shell, is equipped with the external screw thread on the surface of flower-drum shell, is equipped with on the wheel hub with flower-drum shell complex internal thread for flower-drum and wheel hub threaded connection, the bearing is installed in the cavity of flower-drum shell. Like this, when the wheel received the striking, the hub shell had played certain guard action to the bearing, was favorable to avoiding the bearing to receive the impact and damages.

In the process of implementing the present invention, the inventor finds that at least the following problems exist in the conventional technology: when the bicycle is ridden on an uneven road surface, the bicycle is bumpy, and the hub is easy to loosen.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a hub, a hub unit, a wheel assembly and a bicycle, which are used for solving the problems that when the bicycle is ridden on an uneven road surface, the bicycle is bumpy and the hub is easy to loosen.

In one aspect, embodiments of the present disclosure provide a hub comprising: the outer surface of the hub shell is provided with an external thread for connecting with a hub; the hub shell is configured such that at least two different parts have a tendency to rotate in opposite directions relative to the hub, or the hub shell and the hub are further provided with a rotation stop member.

The hub as above, wherein the hub further comprises a locking ring, the locking ring is sleeved on the hub shell, and an inner thread is arranged on the inner wall of the locking ring; the first part of the surface of the hub shell is provided with a first external thread for connection with the hub, and the second part of the surface of the hub shell is provided with a second external thread for mating with the internal thread of the locking ring.

The hub as described above, wherein the first external thread and the second external thread have opposite hand.

The hub as described above, wherein the pitch of the first external thread is smaller than the pitch of the second external thread.

The hub as described above, wherein a stop flange is formed on the hub shell, and the stop flange abuts against the outer end surface of the hub; the rotation stopping component comprises a rotation stopping screw, and the stop flange is fixedly connected with the hub through the rotation stopping screw.

In another aspect, an embodiment of the present disclosure provides a hub unit including: a hub and a hub provided by an aspect of an embodiment of the present disclosure.

The hub unit as described above, wherein the hub shell of the hub includes a small diameter end provided with the locking ring and a large diameter end abutting against the hub.

The hub unit as described above, wherein the hub is formed with an accommodating chamber for accommodating the locking ring, and the locking ring abuts against a chamber wall of the accommodating chamber.

In yet another aspect, embodiments of the present disclosure provide a wheel assembly including: a wheel and a hub unit provided by another aspect of the embodiments of the present disclosure.

In yet another aspect, embodiments of the present disclosure provide a bicycle including: a vehicle frame and a wheel assembly provided by yet another aspect of an embodiment of the present disclosure.

The embodiment of the present disclosure provides a hub, a hub unit, a wheel assembly and a bicycle, wherein, the hub is used for detachably installing in the hub, and the hub includes the hub shell, and the surface of the hub shell is provided with the external screw thread that is used for being connected with the hub, and the hub shell is constructed into and has two different parts at least and has the trend of turning to opposite direction for the hub, or, hub shell and hub still are equipped with the anti-rotation part. Through the arrangement, when the bicycle runs on an uneven road surface and is violently jolted, the hub can not rotate relative to the hub, so that danger caused by looseness of the hub is avoided.

Various possible embodiments of the present disclosure and technical advantages thereof will be described in detail below.

Drawings

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

FIG. 1 is a front view of a bicycle in an embodiment of the present disclosure;

FIG. 2 is an overall schematic view of a wheel in an embodiment of the present disclosure;

FIG. 3 is an exploded schematic view of a wheel according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a hub according to an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of a wheel in an embodiment of the present disclosure;

fig. 6 is a partially enlarged view of a portion a in fig. 5.

Reference numerals:

100: a bicycle;

1: a frame;

2: a front wheel;

3: a rear wheel; 31: a hub; 32: a flower drum; 321: a hub shell; 3211: a step surface; 322: a stop flange; 323: locking a ring; 33: a rear wheel axle;

4: a drive mechanism; 41: a pedal middle shaft; 42: a pedal crank; 43: pedaling;

5: a drum brake;

6: a clamp spring;

7: a flywheel.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The bicycle generally comprises two wheels, wherein a wheel axle is arranged at the wheel center of each wheel and penetrates through the wheel hub of each wheel, a bearing is sleeved on each wheel axle, and each wheel axle is directly connected with the wheel hub through the bearing. However, when the bicycle is impacted, the impact force can be directly transmitted to the bearing through the wheel hub, so that the bearing is easy to damage. Especially for the shared bicycle, the shared bicycle is often moved and transported, so the shared bicycle is more collided and impacted than a private bicycle, and the bearing is more easily damaged.

In order to solve the problems, in the related art, the bicycle further comprises a hub, the hub comprises a hub shell, the hub shell is in threaded connection with the hub, a cavity is formed in the hub shell, a bearing is installed in the cavity of the hub shell, and a wheel shaft is installed in the bearing. Like this, when the wheel received the striking, the hub shell had played certain guard action to the bearing, was favorable to avoiding the bearing to receive the impact and damages.

However, since the hub shell and the hub are screwed together, when a rider rides a bicycle on an uneven road surface, the bicycle is bumped, causing the hub to have a tendency to rotate, and thus the hub has a tendency to rotate in a loosening direction, causing the hub to loosen.

In view of this, embodiments of the present disclosure provide a hub, a hub unit, a wheel assembly, and a bicycle, in which an outer surface of a hub shell of the hub is provided with an external thread connected to a hub, and the hub shell is configured to have at least two portions, one of which has a tendency to rotate in a first direction with respect to the hub, and the other of which has a tendency to rotate in a second direction with respect to the hub, the first direction and the second direction being opposite. With the arrangement, when the hub has a tendency of rotating towards the first direction due to the bumping of the bicycle, the other part of the hub shell cannot rotate due to the opposite tendency, so that the hub can be prevented from rotating; or when the bicycle bumps to cause the hub to have a tendency to rotate towards the second direction, one part of the hub shell cannot rotate due to the opposite tendency, so that the hub can be prevented from rotating, and the hub can be prevented from rotating to be separated from the hub.

The following describes technical solutions of the embodiments of the present disclosure and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present disclosure will be described below with reference to the accompanying drawings.

In the description of the disclosed embodiments, it is to be understood that the terms "central," "left," "right," "inner," "outer," "axial," "circumferential," and the like are used in the positional or orientational relationships indicated in the drawings for the purpose of convenience in describing the embodiments of the present disclosure and to simplify description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the embodiments of the present disclosure.

FIG. 1 is a front view of a bicycle in an embodiment of the present disclosure. Referring to fig. 1, an embodiment of the present disclosure provides a bicycle 100, the bicycle 100 including a frame 1, a wheel assembly, and a drive mechanism 4, wherein the frame 1 is configured to provide support for other components of the bicycle 100 and to provide a user with a ride; the wheel assembly rapidly advances the bicycle 100 by rotating and rolling on the ground; the driving mechanism 4 is in transmission connection with the wheel assembly and is used for driving wheels in the wheel assembly to rotate so as to drive the bicycle 100 to a destination.

The wheel assembly comprises a front wheel 2 and a rear wheel 3, the front wheel 2 and the rear wheel 3 are arranged at intervals along the running direction of the bicycle 100, a front wheel shaft is arranged at the wheel center of the front wheel 2, a rear wheel shaft 33 is arranged at the wheel center of the rear wheel 3, and the driving mechanism 4 can be in transmission connection with the rear wheel shaft 33 to provide power for the running of the bicycle 100.

It is to be understood that the bicycle 100 should be construed broadly, i.e., the bicycle 100 may be a human bicycle 100 or an electric bicycle 100. For the purpose of illustrating the human-powered bicycle 100, the driving mechanism 4 may include pedals 43, pedal cranks 42, a pedal central shaft 41, a chain wheel, a flywheel 7 and a chain, the pedal central shaft 41 is mounted on the frame 1 and can rotate relative to the frame 1, the chain wheel is sleeved on the pedal central shaft 41, one end of the pedal crank 42 is connected with the pedal central shaft 41, the other end of the pedal crank 42 is connected with the pedals 43, the flywheel 7 is sleeved on the rear wheel axle 33, and the chain is wound on the flywheel 7 and the chain wheel in a striding manner. When riding, a rider steps on the pedals 43 to rotate the pedal cranks 42, so as to drive the pedal middle shaft 41 and the crankshafts connected with the pedal middle shaft to rotate, the crankshafts drive the flywheel 7 to rotate through the chain, the rear wheels 3 are driven by the flywheel 7 to rotate around the rear wheel shaft 33, and the front wheels 2 rotate along with the rear wheels, so that the bicycle 100 moves forwards.

Fig. 2 is an overall schematic view of a wheel in an embodiment of the present disclosure, fig. 3 is an exploded schematic view of the wheel in the embodiment of the present disclosure, and fig. 4 is a cross-sectional view of a hub in the embodiment of the present disclosure. As shown in fig. 2 to 4, the wheel assembly further comprises a hub unit mounted at a central position of the front and rear wheels 2 and 3 for mounting of the front and rear wheel shafts 33. Specifically, the hub unit includes a hub 31, the hub 31 has a mounting cavity therein, and a front wheel axle and a rear wheel axle 33 are inserted into the mounting cavity.

When the bicycle 100 is driven by the rear wheel 3, the hub unit of the rear wheel 3 further comprises a hub 32, the hub 32 is mounted in the mounting cavity of the hub 31, and the flywheel 7 is integrated on the hub 32 and is in transmission connection with the chain wheel to drive the rear wheel 3 to rotate. In addition, the wheel assembly further comprises a drum brake 5, the drum brake 5 being arranged on the other side of the hub 32 from the flywheel 7 for cooperating with the wheel hub 31 for braking the rear wheel 3.

Of course, when the bicycle 100 is driven by the front wheel 2, the hub unit of the front wheel 2 may also include a hub 32, the hub 32 being mounted in the mounting cavity of the hub 31 of the front wheel 2. In the following, the hub 31 of the rear wheel 3 to which the hub 32 is attached will be described as an example, and it will be apparent to those skilled in the art from the following technical solutions that the hub 32 is attached to the hub 31 of the front wheel 2.

The hub 32 includes a hub shell 321, a through passage is provided in the hub shell 321, a bearing is provided in the through passage, the rear wheel shaft 33 is installed in the bearing, and the bearing plays a role in supporting rotation. That is, the axle is inserted into the hub shell 321, and the hub shell 321 is installed in the wheel hub 31, so that the axle is installed on the wheel hub 31.

The hub shell 321 is connected with the hub 31 through a thread, specifically, an inner thread is provided on an inner wall of the hub 31, and an outer thread for matching with the inner thread of the hub 31 is provided on an outer surface of the hub shell 321. Therefore, compared with the way that the hub 32 is directly pressed into the hub 31, the hub 32 is installed in the installation cavity in a screwing mode in the embodiment, which is beneficial to avoiding the deformation of the hub 32 caused by a larger extrusion force, and the installation precision is high.

In an example of the present disclosure, the hub shell 321 and the wheel hub 31 are provided with a rotation stopping component, and the rotation stopping component is used to prevent the hub shell 321 from rotating, so as to avoid that the bicycle 100 is violently bumpy to cause the hub 32 to rotate when riding on an uneven road surface, thereby being beneficial to preventing the hub 32 from rotating in a direction of loosening the hub 31 to cause looseness.

In another example of the present disclosure, the hub shell 321 may be configured to have at least two different portions that tend to rotate in opposite directions relative to the hub 31, and this arrangement also serves to prevent the hub shell 321 from rotating, so as to prevent the hub 32 from rotating due to the bicycle 100 being bumpy during riding on an uneven road surface, thereby being beneficial to prevent the hub 32 from rotating in a direction of unscrewing from the hub 31 and causing looseness.

Of course, the hub 32 can also be configured and connected by adopting the two examples, so that the rotation-preventing effect is improved.

In this embodiment, the installation process of the wheel assembly can be divided into several cases: one situation is to mount the wheel hub 31 to the wheel; mounting the axle and bearings into the hub shell 321 to complete the pre-installation of the hub 32; the hub 32 is then screwed onto the hub 31. Another situation is to install the axle and bearings into the hub shell 321 to complete the pre-installation of the hub 32; then the hub 32 is installed in the installation cavity of the hub 31; then, the hub 31 to which the hub 32 has been attached is connected to the wheel.

In summary, the hub 32, the hub unit, the wheel assembly and the bicycle 100 provided by the embodiment of the disclosure, when the bicycle 100 runs on an uneven road surface and is bumpy violently, the hub 32 can not rotate relative to the wheel hub 31, which is beneficial to avoiding danger caused by looseness of the hub 32.

Fig. 5 is a sectional view of a wheel in an embodiment of the present disclosure, and fig. 6 is a partially enlarged view at a in fig. 5. Illustratively, when the hub 321 is configured to have at least two different portions with opposite rotation tendencies relative to the hub 31, the hub 32 may further include a locking ring 323, the locking ring 323 is disposed on an end of the hub 321 away from the flywheel 7, and the inner wall of the locking ring 323 is provided with internal threads. Also, a first portion of the surface of the hub 321 is provided with a first external thread for connection with the wheel hub 31, and a second portion of the surface of the hub 321 is provided with a second external thread to be engaged with the internal thread of the locking ring 323. That is, a first portion of the hub 321 is threadedly coupled to the wheel hub 31 and a second portion of the hub 321 is threadedly coupled to the locking ring 323.

Wherein the first and second external threads are configured to have a tendency to rotate in opposite directions relative to the hub 31. Specifically, the first external thread and the second external thread have opposite directions of rotation. Illustratively, the first and second external threads are both left-hand threads, or alternatively, the first and second external threads are both right-hand threads. Thus, when the bicycle 100 bumps and the hub shell 321 tends to rotate in the direction opposite to the rotation direction of the first external thread, the hub shell 321 cannot rotate in the direction opposite to the rotation direction of the first external thread because the rotation direction of the external thread of the second portion of the hub shell 321 is opposite to the rotation direction of the first external thread, and similarly, the hub shell 321 cannot rotate in the direction opposite to the rotation direction of the second external thread, thereby preventing the hub shell 321 from rotating and loosening.

Of course, in some embodiments of the present disclosure, the hub shell 321 may further be sleeved with another annular component, the inner wall of the other annular component is provided with an internal thread, the outer surface of the hub shell 321 is further formed with a third external thread in threaded connection with the other annular component, and the rotation direction of the third external thread is consistent with the rotation direction of the first external thread or the second external thread, so as to further improve the rotation prevention effect.

Preferably, the pitch of the first external thread is smaller than the pitch of the second external thread. With this arrangement, when the hub 31 is installed, the hub 32 is already installed in the hub 31, and the locking ring 323 is screwed onto the hub shell 321 in the same direction as the direction of the second external thread, and since the directions of the first external thread and the second external thread are opposite, the hub shell 321 also has a tendency to rotate in the opposite direction to the direction of the first external thread, that is, the hub shell 321 has a tendency to unscrew; the pitch of the first external thread is smaller than that of the second external thread, so that when the locking ring 323 and the second external thread are matched to reach one pitch, the first external thread and the wheel hub 31 do not reach one pitch yet, and the possibility that the hub shell 321 is loosened due to the fact that the locking ring 323 is installed is further reduced.

With continued reference to fig. 5 and 6, the diameter of the first portion of the hub shell 321 is greater than the diameter of the second portion of the hub shell 321, the first portion and the second portion together form a step surface 3211, the step surface 3211 is perpendicular to the central axis of the hub shell 321, and the locking ring 323 abuts against the step surface 3211. The inner diameter of the locking ring 323 at this time is between the diameter of the first portion of the hub shell 321 and the diameter of the second portion of the hub shell 321. Thereby, the locking ring 323 blocks the hub shell 321 from coming off from the end facing the locking ring 323, and the reliability of connection between the hub 32 and the wheel hub 31 is improved.

The locking ring 323 can be located outside the mounting cavity of the wheel hub 31 and abut against the outer end face of the wheel hub 31 (i.e., the left end face shown in fig. 6), and the step surface 3211 is coplanar with the outer end face of the wheel hub 31; alternatively, in the example shown in fig. 5 and 6, the hub 31 is formed with a receiving cavity communicating with the through passage, the locking ring 323 is received in the receiving cavity and abuts against the cavity wall of the receiving cavity, and the stepped surface 3211 is coplanar with the cavity wall of the receiving cavity. In the latter example, it is advantageous to avoid the locking ring 323 from being exposed to the outside, and thus to reduce the risk that the locking ring 323 is lost to cause the hub 32 to be detached from the hub 31, and the whole of the bicycle 100 is more beautiful.

It should be noted that, the outer end face of the hub 31 or the cavity wall of the receiving cavity can position the locking ring 323, the locking ring 323 is screwed onto the hub shell 321 during the installation process, when the locking ring 323 abuts against the outer end face of the hub 31 or the cavity wall of the receiving cavity, it indicates that the locking ring 323 is installed in place, the locking ring 323 is easily installed at the correct position on the hub 32, and the installation is simple.

Further, as shown in fig. 3 and 6, the wheel assembly further includes an abutting member, the abutting member is mounted on the wheel hub 31 and is opposite to the step surface 3211, the locking ring 323 is located between the abutting member and the step surface 3211, and two ends of the locking ring 323 abut against the step surface 3211 and the abutting member, respectively. Through the arrangement, the abutting piece abuts against the locking ring 323, so that the locking ring 323 can abut against the hub shell 321, and the locking ring 323 can be effectively prevented from being disengaged from the hub shell 321.

As shown in fig. 3 and 6, the abutting member may be a snap spring 6, the snap spring 6 and the locking ring 323 are both accommodated in the accommodating cavity of the hub 31, an annular groove is formed in the cavity wall of the accommodating cavity, and the snap spring 6 is clamped in the annular groove. From this, jump ring 6 chucking is favorable to avoiding jump ring 6 to deviate from the annular groove on wheel hub 31 to ensure jump ring 6 can effectual support locking ring 323.

For another example, the abutting part can also be a stopping ring, a first magnetic attraction body is arranged on the surface of the stopping ring, a second magnetic attraction body is arranged at the position, opposite to the stopping ring, of the accommodating cavity, and the stopping ring is detachably connected with the cavity wall of the accommodating cavity through the first magnetic attraction body and the second magnetic attraction body which are mutually adsorbed together. Therefore, the connection mode is simple, and the installation is simple. Wherein, first magnetic substance and second magnetic substance all can be the permanent magnet, and magnetic attraction is big.

In the above embodiment, the hub 321 has the large-diameter end and the small-diameter end, the locking ring 323 is provided at the small-diameter end of the hub 321, and the large-diameter end of the hub 321 abuts against the hub 31. Specifically, the large diameter end is provided with a stop surface for abutting against the hub 31. Therefore, the stop surface plays a role in positioning the hub 32, the hub 32 is screwed on the hub 31 in the installation process, when the hub 31 is abutted against the stop surface, the hub 32 is indicated to be installed in place, the hub 32 is easily installed on the hub 31 at the correct position, and the installation is simple. The stop surface abutting the hub 31 also helps to prevent the hub 32 from coming off the hub 31 from the end facing the locking ring 323.

Wherein the large diameter end of the hub shell 321 is provided with a first portion and a third portion, the first portion is located between the second portion and the third portion, and the diameter of the third portion is larger than that of the first portion, the blocking surface is formed by the interface of the first portion and the third portion.

Alternatively, the blocking surface may abut an end surface of the wheel hub 31 facing away from the drum brake 5 (i.e., the right end surface as viewed in fig. 6). Alternatively, as shown in fig. 6, in another alternative example, the mounting cavity may have a small-aperture portion and a large-aperture portion, that is, a receiving groove communicating with the mounting cavity is provided on a side of the hub 31 facing away from the drum brake 5, and the blocking surface of the hub 321 abuts against a groove bottom surface of the receiving groove on the hub 31, so that most of the hub 32 is located in the mounting cavity of the hub 31. At this time, the small-diameter portion of the mounting cavity is engaged with the first portion of the hub shell 321, and the large-diameter portion is engaged with the third portion of the hub shell 321. Therefore, the part of the hub shell 321 extending out of the mounting cavity is reduced, and the whole body is more attractive.

Further, a third portion of the hub shell 321 may be provided as a ramp. Accordingly, in order to mate the hub shell 321 with the hub 31, the large aperture portion of the mounting cavity is also beveled. Thus, the inclined surface has a certain guiding function, so that the hub shell 321 is convenient to install.

For example, when the hub shell 321 and the wheel hub 31 are provided with rotation stopping members, the rotation stopping members may be rotation stopping screws, and at this time, a stopping flange 322 is further formed on the hub shell 321, the stopping flange 322 is located outside the mounting cavity of the wheel hub 31 and is arranged near the flywheel 7, and the stopping flange 322 abuts against the outer end surface of the wheel hub 31 and is fastened and connected with the wheel hub 31 through the rotation stopping screws.

Like this, the spline screw fastens hub shell 321 and wheel hub 31 together, therefore, when bicycle 100 rides on uneven road surface and jolts violently, even if bicycle 100 jolts and leads to hub 32 to have the trend of rotating to the opposite direction with the soon of first external screw thread, hub 31 fastening connection's hub shell 321 also can't rotate, and then plays the effect of preventing changeing to be favorable to avoiding hub shell 321 to rotate and loosen.

It should be further understood that, when the bicycle 100 simultaneously adopts two rotation-preventing modes to prevent rotation, that is, the hub 321 is provided with the locking ring 323, and the hub 321 is also fastened to the wheel hub 31 by the rotation-preventing screws, the rotation-preventing screws can prevent the hub 321 from rotating and loosening during the installation process.

Specifically, during installation, the hub shell 321 is screwed into the installation cavity of the hub 31, the hub shell 321 is connected to the outer end surface of the hub 31 through the rotation-stopping screw, and then the locking ring 323 is screwed onto the hub shell 321 in the same direction as the rotation direction of the second external thread, at this time, the locking ring 323 drives the hub shell 321 to rotate in the direction opposite to the rotation direction of the first external thread, that is, the hub shell 321 has a tendency of unscrewing; and because the hub shell 321 is fastened with the wheel hub 31 through the rotation stopping screw, the hub shell 321 cannot rotate, which is further beneficial to preventing the hub shell 321 from loosening due to the installation of the locking ring 323, so that the hub shell 321 is reliably connected.

In summary, with continued reference to fig. 6, one exemplary assembly process of the hub 32 to the hub 31 is provided by the embodiments of the present disclosure:

pre-assembling the hub 32: the wheel shaft is arranged in the hub shell 321 in a penetrating mode, the bearing is sleeved on the wheel shaft and is arranged in the hub shell 321, the hub 32 is pre-installed, and the wheel hub 31 is arranged on the wheel.

Mounting the hub 32 to the hub 31: screwing the hub 32 on the wheel hub 31 to enable the first external thread of the hub shell 321 to be matched with the internal thread of the wheel hub 31, wherein one end, connected with the drum brake 5, of the hub 32 is close to the left end face of the wheel hub 31, and the other end, connected with the flywheel 7, of the hub 32 is close to the right end face of the wheel hub 31; the hub 32 is mounted in place until the stop surface of the hub shell 321 abuts against the bottom surface of the receiving groove of the hub 31 and the stop flange 322 abuts against the right end surface of the hub 31.

Installing a rotation stopping screw: the rotation stop screws are mounted to the stopper flange 322 and the wheel hub 31 so that the hub shell 321 is tightly coupled to the wheel hub 31.

Installing the locking ring 323: screwing the locking ring 323 into the end, connected with the drum brake 5, of the hub shell 321, so that the second external thread of the hub shell 321 is matched with the internal thread of the locking ring 323; until the locking ring 323 abuts against the step surface 3211, the locking ring 323 abuts against the hub 32, and the locking ring 323 is mounted in place.

Installing a clamp spring 6: the clamp spring 6 is arranged in the accommodating cavity of the wheel hub 31 from one end of the hub shell 321 connected with the drum brake 5, and the clamp spring 6 is clamped in the annular groove; at this time, the snap spring 6 abuts against the locking ring 323 for preventing the locking ring 323 from loosening.

Installing a drum brake 5: the drum brake 5 is mounted to the end of the hub shell 321 connected to the drum brake 5

Loading a flywheel 7: the flywheel 7 is mounted to the end of the hub shell 321 facing away from the drum brake 5.

It should be noted that the present embodiment does not limit the order of installing the flywheel 7 and the drum brake 5, and the flywheel 7 may be installed before the drum brake 5 or after the drum brake 5.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The embodiments of the disclosure are intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A hub for removable mounting within a hub, comprising:

the outer surface of the hub shell is provided with an external thread for connecting with a hub;

the hub shell is configured such that at least two different parts have a tendency to rotate in opposite directions relative to the hub, or the hub shell and the hub are further provided with a rotation stop member.

2. The hub according to claim 1, further comprising a locking ring, wherein the locking ring is sleeved on the hub shell, and an inner thread is arranged on an inner wall of the locking ring;

the first part of the surface of the hub shell is provided with a first external thread for connection with the hub, and the second part of the surface of the hub shell is provided with a second external thread for mating with the internal thread of the locking ring.

3. The hub according to claim 2, wherein the first external thread and the second external thread have opposite hand.

4. The hub of claim 2, wherein the pitch of the first external thread is less than the pitch of the second external thread.

5. The hub according to claim 1, wherein a stop flange is formed on the hub shell, the stop flange abutting an outer end surface of the hub; the rotation stopping component comprises a rotation stopping screw, and the stop flange is fixedly connected with the hub through the rotation stopping screw.

6. A hub unit, comprising: a hub and a hub according to any one of claims 1-5.

7. A hub unit according to claim 6, wherein the hub shell of the hub comprises a small diameter end provided with a locking ring and a large diameter end abutting the hub.

8. A hub unit according to claim 7, wherein the hub is formed with a receiving cavity for receiving the locking ring, the locking ring abutting against a wall of the receiving cavity.

9. A wheel assembly, comprising: a wheel and a hub unit according to any of claims 6-8.

10. A bicycle, comprising: a vehicle frame and a wheel assembly as claimed in claim 9.

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