CN212708740U - 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 comprises: the hub comprises a hub shell, a bearing and a wheel shaft, wherein the hub shell is provided with an external thread connected with a wheel hub, and a through channel is arranged inside the hub shell; the bearing is arranged in the through passage, and the wheel shaft is arranged in the bearing. Through the setting, the hub shell plays a certain guard action to bearing and shaft, compares with the direct and wheel hub contact of bearing, is favorable to avoiding wheel hub to receive external impact (for example striking) when directly transmitting the impact force for the bearing, and the hub has played the effect of buffering, is favorable to avoiding the bearing to receive the impact and damage.

Description

Hub, hub unit, wheel assembly and bicycle

The present application claims priority from the chinese patent application filed on 16/06/2020, having application number 202010550242.3 and entitled "hub, wheel assembly and bicycle," the entire contents of which are incorporated herein by reference.

Technical Field

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

Background

At present, the pollution of the environment by the exhaust gas generated by motor vehicles is increasingly serious. In order to reduce environmental pollution, people tend to take electric bicycles or vehicles such as bicycles when going out.

In the related technology, the bicycle comprises a front wheel, a frame, a rear wheel and a handlebar structure, wherein a wheel axle is arranged at the wheel center of the rear wheel, and the wheel axle is in transmission connection with a central shaft of a pedal device through a chain transmission device. Specifically, the rear wheel includes wheel hub, and the shaft is worn to establish in wheel hub, and the epaxial both ends that are close to wheel hub of wheel are equipped with left bearing and right bearing respectively in the cover, and the shaft is connected with wheel hub through two bearings.

In the process of implementing the present invention, the inventor finds that at least the following problems exist in the conventional technology: the bearings are easily damaged.

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 problem that a bearing is easy to damage.

In one aspect, embodiments of the present disclosure provide a hub comprising: the hub comprises a hub shell, a bearing and a wheel shaft, wherein the hub shell is provided with an external thread connected with a wheel hub; the interior of the hub shell is provided with a through channel; the bearing is arranged in the through passage, and the wheel shaft is arranged in the bearing.

In another aspect, an embodiment of the present disclosure provides a hub unit including: the hub can rotate around a hub shaft; the hub shell is in threaded connection with the hub for mounting the axle to the hub.

In yet another aspect, embodiments of the present disclosure provide a wheel assembly including: the hub is provided with an annular mounting cavity for mounting a hub shell, and the inner wall of the mounting cavity is provided with an internal thread connected with the hub shell.

In yet another aspect, embodiments of the present disclosure also provide a wheel assembly including: the wheel and the wheel hub unit provided by the embodiment of the disclosure on the other hand, the wheel hub is provided with an annular mounting cavity for mounting a hub shell, and the inner wall of the mounting cavity is provided with an internal thread connected with the hub shell.

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

The embodiment of the disclosure provides a pair of flower-drum, wheel hub unit, wheel subassembly and bicycle, through installing shaft and bearing in the flower-drum shell, the flower-drum shell has played certain guard action to bearing and shaft, compares with the direct and wheel hub contact of bearing, directly transmits the impact force for the bearing when being favorable to avoiding wheel hub to receive external impact (for example striking), and the flower-drum has played the effect of buffering, is favorable to avoiding the bearing to damage. And when there is the error and leads to the shaft to deviate in bearing installation, the wearing and tearing of shaft are big, and the flower-drum can avoid the direct wheel hub that wears of shaft, and then is favorable to reducing the damaged risk of wheel hub to reduce replacement cost.

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 provided in accordance with an embodiment of the present disclosure;

FIG. 2 is an exploded view of a wheel assembly provided by an embodiment of the present disclosure;

FIG. 3 is another exploded view of a wheel assembly provided by an embodiment of the present disclosure;

FIG. 4 is a top plan view of an exploded view of the wheel assembly shown in FIG. 2;

FIG. 5 is a schematic structural view of a wheel assembly provided by an embodiment of the present disclosure;

FIG. 6 is a front view of a wheel assembly provided by an embodiment of the present disclosure;

FIG. 7 is a left side view of a wheel assembly provided by an embodiment of the present disclosure;

FIG. 8 is a right side view of a wheel assembly provided by an embodiment of the present disclosure;

FIG. 9 is a top view of a wheel assembly provided by an embodiment of the present disclosure;

FIG. 10 is a bottom view of the wheel assembly provided by one embodiment of the present disclosure;

FIG. 11 is yet another exploded view of the wheel assembly provided by an embodiment of the present disclosure;

FIG. 12 is a cross-sectional view of a hub provided by one embodiment of the present disclosure;

FIG. 13 is a structural cross-sectional view of a wheel assembly provided in accordance with an embodiment of the present disclosure from a first perspective;

FIG. 14 is a structural cross-sectional view of a wheel assembly provided in accordance with an embodiment of the present disclosure from a second perspective;

FIG. 15 is a cross-sectional view of a wheel assembly provided in accordance with an embodiment of the present disclosure;

FIG. 16 is a schematic view of the connection between the lock and the brake disc of the bicycle according to an embodiment of the present disclosure;

FIG. 17 is an enlarged view of a portion of FIG. 15 at A;

fig. 18 is a partial enlarged view at B in fig. 14;

fig. 19 is yet another exploded view of a wheel assembly provided by an embodiment of the present disclosure.

Description of reference numerals:

100: a bicycle;

10: a wheel assembly; 11: a wheel; 111: a hub; 112: a spoke; 113: a rim; 114: a brake hole; 12: an inner three-speed component; 13: a drum brake; 131: a brake shoe; 14: a drum brake lock; 15: a nut; 16: a flower drum; 161: a hub shell; 1611: a first blocking surface; 1612: a stop surface; 162: a first bearing; 163: a second bearing; 164: a wheel axle; 165: a brake disc; 166: a first waterproof ring; 167: a second waterproof ring; 17: a clamp spring; 18: locking a ring; 19: a flywheel; 110: a brake box;

20: a drive mechanism;

30: a chain;

40: a handlebar;

50: a brake operation unit;

60: a vehicle lock.

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.

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.

In the related technology, the bicycle comprises a front wheel, a frame, a rear wheel and a handlebar structure, wherein a wheel axle is arranged at the wheel center of the rear wheel, and the wheel axle is in transmission connection with a central shaft of a pedal device through a chain transmission device. Specifically, the rear wheel includes wheel hub, and the shaft is worn to establish in wheel hub, and the cover is equipped with the bearing on the shaft, and the bearing is located wheel hub, and the bearing is direct to be connected with wheel hub. And the bicycle also comprises a brake disc, one end of the hub is provided with a cavity, an internal thread is formed on the inner wall of the cavity, the brake disc is positioned in the cavity, and an external thread matched with the inner wall of the cavity is arranged on the outer surface of the brake disc, so that the brake disc is in threaded connection with the hub. By adopting the structure, when the hub receives impact, the impact force is directly transmitted to the bearing, so that the bearing is easy to damage, and the normal use of the bicycle is further influenced.

In view of this, this application embodiment provides a flower-drum, wheel hub unit, wheel subassembly and bicycle, and the flower-drum includes the flower-drum shell with wheel hub threaded connection, and shaft and bearing integration have played the effect of protection and buffering to the bearing in the flower-drum shell, are favorable to avoiding the bearing to receive the impact force influence that the wheel hub bore and damage.

Example one

As shown in fig. 1, embodiments of the present disclosure provide a bicycle 100, the bicycle 100 including a frame, a wheel assembly 10, a drive mechanism 20, a handlebar 40, and a lock. Wherein the frame is configured to provide support for other components of the bicycle 100 and to provide seating for a user; the wheel assembly 10 rapidly advances the bicycle 100 by rotating and rolling on the ground; the driving mechanism 20 is in transmission connection with the wheel assembly 10 and is used for driving wheels in the wheel assembly 10 to rotate so as to drive the bicycle 100 to a destination; the handlebar 40 is used for a user to hold and manipulate to change the direction of travel of the bicycle 100; the lock is used to lock the bicycle 100 from theft.

It is to be understood that the bicycle 100 is to be construed broadly, i.e., the bicycle 100 may be a human bicycle or an electric bicycle. When the bicycle 100 is a human-powered bicycle, the drive mechanism 20 may include pedals, pedal cranks, crankshafts, a flywheel, and a chain, respectively. When the bicycle 100 is an electric bicycle, the pedals and pedal cranks of the drive mechanism 20 can be replaced with motors, respectively. In the following, a manual bicycle is taken as an example for explanation, and it is obvious that a person skilled in the art can understand the technical scheme of the electric bicycle after reading the following technical scheme.

As shown in fig. 2 and 11, the wheel assembly 10 includes front and rear wheels 11, the front and rear wheels 11 are spaced apart from each other along the driving direction of the bicycle 100, and the driving mechanism 20 can be in transmission connection with the rear wheels 11 to provide power for the bicycle 100 to run.

The wheel assembly 10 further includes a wheel hub 111, the wheel hub 111 is mounted at the center of the front wheel and the rear wheel 11, and the wheel hub 111 has a mounting cavity, a wheel axle 164 is rotatably mounted in the mounting cavity, and the wheel axle 164 rotates to drive the wheel to rotate, so that the bicycle 100 runs.

The middle part of the frame is also provided with a central shaft in transmission connection with the wheel shaft 164, a chain wheel of the driving mechanism 20 is sleeved on the central shaft, one end of a pedal crank is connected with the central shaft, the other end of the pedal crank is connected with a pedal, a flywheel is sleeved on the wheel shaft 164 of the rear wheel 11, and a chain is wound on the flywheel and the chain wheel in a striding mode. When riding, a rider treads pedals to enable the pedal cranks to rotate, so that the central shaft and the chain wheel connected with the central shaft are driven to rotate, the chain wheel drives the flywheel to rotate through a chain, the rear wheel 11 is driven by the flywheel to rotate around the wheel shaft 164, the front wheel rotates along with the rear wheel, and therefore the bicycle 100 moves forwards.

With reference to fig. 11-15, 17 and 18, in one embodiment of the present disclosure, the wheel assembly 10 further includes a hub 16, and the hub 16 is mounted in the mounting cavity of the hub 111. The hub 16 includes a hub shell 161, a bearing and a wheel axle 164, the hub shell 161 is fixed in the mounting cavity, a through channel is provided in the hub shell 161, the bearing is disposed in the through channel, and the wheel axle 164 is mounted in the bearing. That is, the axle 164 is inserted into the hub shell 161, and the hub shell 161 is installed in the hub 111 such that the axle 164 is installed on the hub 111.

Specifically, the hub shell 161 and the hub 111 are connected in a manner that an external thread connected with the hub 111 is arranged on the outer surface of the hub shell 161, and an internal thread connected with the hub shell 161 is arranged on the inner wall of the mounting cavity, so that the hub shell 161 and the hub 111 are connected together through a thread. Therefore, compared with the prior art in which the hub 16 is directly pressed into the hub 111, the hub 16 of the present embodiment is mounted into the mounting cavity by screwing, which is beneficial to avoiding the deformation of the hub 16 due to a large pressing force, and the mounting precision is high.

Here, it is understood that the starting point of the external thread may be one end of the hub shell 161 and the finishing point of the external thread may be the other end of the hub shell 161. That is, the entire surface of the hub shell 161 may be provided with external threads to be engaged with the hub 111. Alternatively, a part of the hub shell 161 in the axial direction is provided with an external thread, in other words, an external thread which is engaged with the hub 111 is provided at a partial position on the surface thereof. Similarly, the inner wall of the hub 111 opposite to the hub shell 161 may be provided with internal threads only at a partial position, or may be provided on the entire inner wall, as long as the hub 111 and the hub shell 161 are connected by threads.

The bearings may include a first bearing 162 and a second bearing 163, wherein the first bearing 162 and the second bearing 163 are both disposed on the axle 164 and located in the hub shell 161, and the two bearings support the rotation. Preferably, the first bearing 162 and the second bearing 163 are respectively located at two ends of the hub shell 161, that is, near two ends of the hub 111. Through set up first bearing 162 and second bearing 163 respectively at the both ends of wheel hub 111, two bearings seal the through passage, are favorable to avoiding external debris to get into and lead to the damage of flower-drum 16 and appear unusually in the through passage. When the rider steps on the pedals to rotate the center shaft, the wheel shaft 164 rotates, and the first bearing 162 and the second bearing 163 rotate, thereby driving the hub shell 161 mounted on the bearings and the hub 111 connected thereto to rotate, and thus rotating the rear wheel 11.

In this embodiment, the installation process of the wheel assembly can be divided into several cases: one situation is to mount the hub 111 to a wheel; mounting the axle 164 and bearings into the hub shell 161 to complete the pre-installation of the hub 16; the hub 16 is then mounted to the hub 111 by twisting the hub 16. Another scenario is to install the axle 164 and bearings into the hub shell 161 to complete the pre-installation of the hub 16; then the hub 16 is mounted in the mounting cavity of the hub 111; then, the hub 111 to which the hub 16 has been mounted is connected to the wheel.

Based on the above, the hub shell 161 in the wheel assembly provided by an embodiment of the present disclosure plays a certain protection role for the bearing and the wheel axle 164, and compared with the direct contact between the bearing and the wheel hub 111, the hub 111 is prevented from being impacted (for example, impacted) by the outside, and the impact force is directly transmitted to the bearing, and the hub 16 plays a role in buffering, thereby preventing the bearing from being damaged due to the impact. This configuration is particularly useful for shared bicycles, as they are often handled and transported and are therefore subject to more impacts and shocks relative to private bicycles.

Compared with the prior art in which the bearing is directly mounted in the mounting cavity of the hub 111, the bearing in the embodiment does not directly contact with the hub 111, when the first bearing 162 and the second bearing 163 are mounted in an error manner to cause the axle 164 to deviate, the axle 164 is worn greatly, and the hub 16 can prevent the axle 164 from directly wearing the hub 111, so that the risk that the hub 111 is damaged is reduced, and the replacement cost of the bicycle 100 is reduced.

In addition, during installation, compared with the installation mode that the wheel axle 164 and the bearing are directly installed in the wheel hub 111 and the bearing is in press fit, the arrangement is that the hub 16 can be installed as an independent component, the bearing is convenient to install, the installation mode with small extrusion force can be adopted for installation, and further the bearing is prevented from being damaged due to overlarge extrusion force during installation.

Of course, it should be noted that the hub 16 provided in the present embodiment may also be applied to the front wheel 11. Specifically, the hub 111 is also provided at the center of the front wheel 11, and an internal thread that matches the external thread on the hub shell 161 is provided on the inner wall of the hub 111.

Example two

Unlike the first embodiment, the wheel assembly 10 in the present embodiment includes a hub unit, wherein the hub unit includes a wheel hub 111 and a hub shell 161, the wheel hub 111 is rotatable about an axle 164, and the hub shell 161 is threadedly coupled to the wheel hub 111 for mounting the axle 164 to the wheel hub 111.

Here, it can be understood that the structure and function of the hub 111 and the hub shell 161 in this embodiment may be the same as those in the first embodiment, that is, the hub 111 has a mounting cavity for mounting the hub shell 161, and the hub shell 161 has a through channel therein, which is not described in detail herein.

The hub unit further comprises a bearing provided in the through passage of the hub shell 161 and a wheel axle 164 mounted in the bearing. The structure and function of the bearing and the wheel axle 164 may also be the same as those of the first embodiment, that is, the bearing may include a first bearing 162 and a second bearing 163, and both the first bearing 162 and the second bearing 163 are sleeved on the wheel axle 164.

An exemplary installation process of the wheel assembly in this embodiment is: screwing the hub 111 with the hub shell 161 to complete pre-installation of the hub unit; the hub unit is then mounted to the wheel and the bearings and axle 164 are mounted within the hub unit's hub shell 161.

Based on the above, in the wheel assembly provided by the embodiment of the present disclosure, the hub shell 161 of the hub unit plays a certain protection role for the bearing and the wheel axle 164, and compared with the direct contact between the bearing and the hub 111, the hub unit is favorable to preventing the impact force from being directly transmitted to the bearing when the hub 111 is impacted (for example, impacted), and the hub 16 plays a role in buffering, and is favorable to preventing the bearing from being damaged due to the impact. This configuration is particularly useful for shared bicycles, as they are often handled and transported and are therefore subject to more impacts and shocks relative to private bicycles.

Compared with the prior art in which the bearing is directly mounted in the mounting cavity of the hub 111, the bearing in the embodiment does not directly contact with the hub 111, when the first bearing 162 and the second bearing 163 are mounted in an error manner to cause the axle 164 to deviate, the axle 164 is worn greatly, and the hub 16 can prevent the axle 164 from directly wearing the hub 111, so that the risk that the hub 111 is damaged is reduced, and the replacement cost of the bicycle 100 is reduced.

EXAMPLE III

With reference to fig. 16 and 19, on the basis of any of the foregoing embodiments, in order to realize braking, a brake disc 165 is further mounted outside the hub shell 161. By providing the brake disc 165, when the bicycle 100 needs to be stopped or decelerated, the brake disc 165 is clamped by a brake (see description below) to brake, so as to avoid accidents. Specifically, the brake disc 165 is hollow inside, and for example, the brake disc 165 may be an iron ring mounted on the hub shell 161 and located outside the hub 111. From this, compare with brake disc 165 sets up in the cavity of wheel hub 111 among the relevant art, because brake disc 165 of this embodiment sets up outside wheel hub 111, so be convenient for by the dismouting to be convenient for maintain and change brake disc 165, corresponding, also be convenient for maintain and change wheel hub 111.

Wherein, the brake disc 165 and the hub shell 161 can also be connected by screw thread. Specifically, the outer surface of the end of the hub shell 161 located outside the hub 111 is provided with an external thread, and the inner surface of the brake disc 165 opposite to the hub shell 161 is provided with an internal thread which is engaged with the external thread. Of course, in a possible embodiment, the brake disc 165 can also be sleeved on the hub shell 161 and clamped with the hub shell 161.

Therefore, compared with the prior art in which the brake disc 165 is directly screwed with the hub 111, the brake disc 165 in the embodiment of the disclosure is mounted on the hub shell 161 and located outside the hub 111, so as to be beneficial to avoiding damage to the brake disc 165 caused by directly transmitting impact force to the brake disc 165 when the hub 111 is subjected to external impact (e.g., impact). Moreover, the brake disc 165, the wheel axle 164, the bearing and the hub shell 161 are integrated into the hub 16, the hub 16 can be used as an independent component, and when the hub is installed, the hub 16 only needs to be installed on the hub 111, and the wheel axle 164, the bearing and other components do not need to be installed on the hub 111 independently, so that the operation is convenient.

In some embodiments of the present disclosure, the lock 60 includes a lock body and a lock tongue, a lock hole for cooperating with the lock tongue is provided on the brake disc 165, and the lock tongue can extend into the lock hole or be separated from the lock hole. When the lock 60 is in a locked state, the lock tongue extends into the lock hole of the brake disc 165, so that the brake disc 165 is fixed and cannot rotate; when the lock 60 is in the unlocked state, the locking tongue is disengaged from the locking hole, and the brake disc 165 can rotate freely. Thus, the brake disc 165 is locked by the engagement of the brake disc 165 and the latch tongue, and the braking of the bicycle 100 is controlled to stop, decelerate, or run the bicycle 100.

It is understood that the locking hole may be plural, and the plural locking holes are uniformly arranged along the circumferential direction of the brake disc 165. For example, the lock tongue and the lock hole are both elongated. From this, spring bolt and lockhole looks adaptation, the process that the spring bolt stretched into the lockhole is smooth and easy, avoids appearing the phenomenon of hesitation.

In addition, the wheel assembly 10 further includes a brake box 110, and the brake box 110 is disposed on a side of the brake disc 165 facing away from the hub 111 and is connected to the brake disc 165. Thus, the brake disc 165 is positioned in the brake box 110, so that the brake disc 165 is prevented from being exposed to the outside to protect the brake disc 165, and the bicycle 100 is more attractive as a whole. The lock 60 may be located in a brake case 110, and the brake case 110 is connected to a brake, which is connected to a brake operating part 50 (see the following description) through a brake cable. In the riding process, if a rider needs to brake, the brake operation part 50 is operated, and the brake operation part 50 drives the brake to act through the brake cable, so that the brake disc 165 is driven to brake.

The lock 60 is further provided with a hall sensor, and the brake disc 165 of the wheel assembly 10 is provided with a magnet. So set up, when brake disc 165 rotated to the position that magnet and hall sensor just right, the magnetic field that the magnet produced played the trigger action to hall sensor, and hall sensor produces the signal to make the spring bolt deviate from the lockhole on the brake disc 165, in order to realize unblanking.

In the above embodiment, the end surface side of the hub shell 161 close to the brake disc 165 is provided with the first blocking surface 1611, and the first blocking surface 1611 is used for abutting against the brake disc 165. Wherein the first blocking surface 1611 is perpendicular to the axis of the axle 164, and the first blocking surface 1611 and the surface of the hub shell 161 opposite the brake disc 165 together form a first step. Therefore, the first blocking face 1611 has a positioning effect on the brake disc 165, the brake disc 165 is screwed onto the hub shell 161 in the mounting process, when the brake disc 165 is abutted against the first blocking face 1611, the brake disc 165 is indicated to be mounted in place, the brake disc 165 is easily mounted at the correct position, and the mounting is simple.

Wherein the first blocking surface 1611 is parallel with the end surface of the hub 111 facing the brake disc 165 (i.e., the left end surface as viewed in fig. 11). Preferably, the first blocking surface 1611 has a clearance with the end surface of the hub 111 facing the brake disc 165 and is located between the brake disc 165 and the end surface of the hub 111. In short, the brake disc 165 has a gap with the left end surface of the hub 111, and the first blocking surface 1611 of the hub shell 161 is located outside the hub 111. With the arrangement, compared with the situation that the first blocking face 1611 is flush with the left end face of the hub 111 and the brake disc 165 abuts against the first blocking face 1611 and the hub 111 at the same time, the brake disc 165 is prevented from being damaged due to friction with the left end face of the hub 111 when rotating.

In the above embodiment, the hub shell 161 has the large-diameter end and the small-diameter end, and the interface of the large-diameter end and the small-diameter end is formed as the second stop face, which abuts against the hub 111. Wherein the second stopping surface is perpendicular to the axis of the wheel axle 164, and the second stopping surface and the surface where the hub shell 161 and the wheel hub 111 are screwed together form a second step.

Therefore, the second stopping surface plays a role in positioning the hub 16, the hub 16 is screwed on the hub 111 in the mounting process, when the hub 111 is abutted against the second stopping surface, the hub 16 is indicated to be mounted in place, the hub 16 is easily mounted on the hub 111 at the correct position, and the mounting is simple. Moreover, the second stopping surface is abutted against the hub 111, so that the hub 16 is prevented from coming off from one end of the hub 111 facing the brake disc 165, and the reliability of connection between the hub 16 and the hub 111 is improved.

Alternatively, the second stop surface may be flush with the end surface of the hub 111 facing away from the brake disc 165 (i.e. the right end surface as viewed in fig. 11), with the hub 16 mounted on the hub 111 abutting the right end surface of the hub 111. Alternatively, in another alternative example, the mounting cavity has a small-diameter portion and a large-diameter portion, i.e., the side of the hub 111 facing away from the brake disc 165 is provided with a recess communicating with the mounting cavity, and the hub 16 abuts against the bottom surface of the recess in the hub 111. At this time, the large diameter portion of the mounting cavity engages the large diameter end of the hub shell 161, and the small diameter portion of the mounting cavity engages the small diameter end of the hub shell 161. Therefore, the part of the hub shell 161 extending out of the mounting cavity is reduced, and the whole body is more attractive.

Further, at least a portion of the large diameter end of the hub shell 161 is provided as a slope, that is, a slope is formed between the surface of the hub shell 161 where the hub 111 is threadedly coupled and the second blocking surface. Accordingly, in order to mate the hub shell 161 with the hub 111, the interface of the small and large bore portions of the mounting cavity is also beveled. Therefore, the inclined plane has a certain guiding function and is convenient to mount.

With continued reference to fig. 11, 12 and 17 in addition to the above-described embodiments, the wheel hub 111 is provided with a stop surface 1612, and the wheel assembly 10 further includes a stopper portion mounted on the wheel hub 111 opposite the stop surface 1612 and a locking ring 18; the locking ring 18 is sleeved on the hub shell 161, and two ends of the locking ring 18 are respectively abutted against the stop surface 1612 and the stop portion. Wherein the stop surface 1612 is perpendicular to the axis of the wheel axle 164, and the stop surface 1612 and the surface of the hub shell 161 that is in threaded engagement with the wheel hub 111 together form a third step. Through the arrangement, the locking ring 18 pressed by the stopping part abuts against one end of the hub shell 161 facing the brake disc 165, so that the hub 16 is further prevented from being disengaged from one end of the hub 111 facing the brake disc 165, and the connection reliability of the hub 16 and the hub 111 is improved.

In this example, the end of the hub 111 facing the brake disc 165 is provided with a receiving cavity in communication with the through passage, the stop portion and the locking ring 18 both being located within the receiving cavity. Thereby, the locking ring 18 is prevented from being exposed to the outside, the risk that the locking ring 18 is lost to cause the hub 16 to be detached from the hub 111 is reduced, and the overall appearance of the bicycle 100 is more beautiful.

The locking ring 18 can be sleeved on the hub shell 161 and tightly clamped with the hub shell 161; alternatively, the locking ring 18 may also be threaded with the hub shell 161. Therefore, the installation mode is simple and reliable. It should be noted that the stop surface 1612 serves as a location for the locking ring 18, and during installation, the locking ring 18 is screwed onto the hub shell 161, and when the locking ring 18 interferes with the stop surface 1612, it indicates that the locking ring 18 is installed in place, and the locking ring 18 is easily installed onto the hub 16 at the correct position, which is simple to install.

For example, in the example shown in fig. 11 and 17, the stopper may include a snap spring 17, and the receiving cavity is provided with an annular groove, and the snap spring 17 is snapped into the annular groove. Therefore, the clamp spring 17 is prevented from being disengaged from the annular groove, and the clamp spring 17 can effectively abut against the locking ring 18. For another example, the stopping portion may further include a stopping ring, a first magnetic attraction body is disposed on a surface of the stopping ring, a second magnetic attraction body is disposed at a position of the accommodating cavity opposite to the stopping ring, and the stopping ring is detachably connected to the hub 111 through the first magnetic attraction body and the second magnetic attraction body that are attracted to each other. 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.

Further, the flywheel 19 and the brake disc 165 of the drive mechanism 20 are respectively provided on both sides of the hub shell 161. In other words, the flywheel 19 is mounted on the hub shell 161 at the end facing away from the brake disc 165. At the same time, the flywheel 19 is located outside the hub 111 to be chain-connected with the chain wheel of the driving mechanism 20. During riding, a rider steps on pedals to rotate pedal cranks, so that the crankset are driven to rotate, the crankset transmits torque to the flywheel 19 through the chain 30, the flywheel 19 rotates to drive the axle 164 of the rear wheel 11 to rotate, and the rear wheel 11 is driven to rotate, so that the bicycle 100 runs. Moreover, the flywheel 19 is arranged at the other end of the hub 111, which is far away from the brake disc 165, so that the hub 16 can be prevented from being separated from the other end of the hub 111, and the reliability of connection between the hub 16 and the hub 111 is improved.

In other examples of the present disclosure, the wheel assembly 10 further includes a first nut and a second nut, the first nut and the second nut being respectively mounted at two ends of the axle 164, the first nut being configured to abut against the first bearing 162, and the second nut being configured to abut against the second bearing 163. Therefore, the first nut presses the first bearing 162, and the second nut presses the second bearing 163, which is beneficial to avoiding the bearing from separating from the wheel axle 164 to cause the bicycle 100 to be incapable of running normally.

Illustratively, the wheel assembly 10 further includes a first waterproof ring 166 and a second waterproof ring 167, the first waterproof ring 166 is located between the first bearing 162 and the first nut, and is sleeved on the first nut; the second waterproof ring 167 is located between the second bearing 163 and the second nut, and is sleeved on the second nut. Thus, the first waterproof ring 166 and the second waterproof ring 167 are waterproof, and help prevent rainwater from penetrating into the hub 16 to rust the components of the hub 16, so as to ensure that the bicycle 100 can be used normally. This configuration is particularly useful for sharing a vehicle such as the bicycle 100 that is exposed to an outdoor environment for a long period of time to avoid rusting by flooding the flower drums 16 on the sharing bicycle 100 in rainy and snowy weather.

In this embodiment, the wheel assembly 10 further comprises a washer that abuts against the side of the second nut facing away from the brake disc 165. The washer thereby further compresses the second nut, which advantageously prevents the second nut from disengaging from the axle 164.

In summary, the disclosed embodiment provides an exemplary assembly process of the hub 16 to the hub 111 as follows:

pre-assembling the hub 16: the wheel shaft 164 is arranged in the hub shell 161 in a penetrating mode, the first bearing 162 and the second bearing 163 are sleeved on the wheel shaft 164 and are arranged in the hub shell 161, the hub 16 is pre-installed, and the wheel hub 111 is arranged on the wheel.

Mounting the hub 16 to the hub 111: screwing the hub 16 on the hub 111 to enable the external thread of the hub shell 161 to be matched with the internal thread of the hub 111, wherein one end of the hub 16 connected with the brake disc 165 is close to the left end face of the hub 111, and the other end of the hub 16 connected with the flywheel 19 is close to the right end face of the hub 111; until the second stop surface of the hub shell 161 abuts the hub 111, the hub 16 is mounted in place.

Mounting the locking ring 18: screwing the locking ring 18 into the end of the hub shell 161 connected to the brake disc 165 so that the threads of the hub shell 161 mate with the threads of the locking ring 18; the locking ring 18 is installed in place until the locking ring 18 abuts the stop surface 1612 and the locking ring 18 abuts the hub 16.

Installing a snap spring 17: the clamp spring 17 is arranged in the accommodating cavity of the hub 111 from one end of the hub shell 161 connected with the brake disc 165, and the clamp spring 17 is clamped in the annular groove; at this time, the snap spring 17 abuts against the locking ring 18 for preventing the locking ring 18 from being loosened.

Mounting a brake disc 165: screwing the brake disc 165 into the end of the hub shell 161 connected with the brake disc 165, so that the thread of the hub shell 161 is matched with the thread of the brake disc 165; the brake disc 165 is mounted in place until the side of the brake disc 165 facing the end face of the hub 111 abuts the first stop surface 1611.

The brake loading box 110: the brake cassette 110 is connected to the brake disc 165.

A flywheel 19: the flywheel 19 is mounted to the end of the hub shell 161 facing away from the brake disc 165.

It should be noted that the present embodiment does not limit the order of installing the flywheel 19 and the brake disc 165, and the flywheel 19 may be installed before the brake disc 165 or may be installed after the brake disc 165.

Example four

The bicycle 100 includes a wheel assembly 10 and a drive mechanism 20. Drive assembly 20 is adapted to be coupled to wheel assembly 10 to drive wheel assembly 10. In certain example embodiments, the bicycle 100 may include a human powered bicycle and an electric bicycle. As shown in fig. 2 to 5, the wheel assembly 10 includes a wheel 11, an inner three-speed component 12 and a drum brake 13.

The wheel 11 includes a hub 111. The inner three-speed member 12 is disposed on one side of the wheel 11 and within the hub 111 for driving the wheel 11 at different gear ratios. A drum brake 13 is arranged on the other side of the wheel 11 for cooperating with the hub 111 for braking the wheel 11.

In such an embodiment, since the inner three-speed component 12 is more compact in structure, integrating the inner three-speed component 12 in the hub 111 on the wheel 11 side can improve the appearance of the wheel assembly 10. Furthermore, by integrating the inner three-speed component 12 on one side of the wheel 11 and the drum brake 13 on the other side of the wheel 11, the degree of integration of the wheel assembly 10 can be increased, thereby facilitating the assembly of the wheel assembly 10.

In some embodiments, as shown in FIG. 1, the drive mechanism 20 may be a crank mechanism when the bicycle 100 is a manual bicycle. In other embodiments, when the bicycle 100 is an electric bicycle, the drive mechanism 20 may be a motor mechanism.

In some embodiments, as shown in FIG. 1, the drum brake 13 may be disposed on the rear wheel of the bicycle 100. However, it should be understood that the drum brake 13 may also be arranged on the front wheel of the bicycle 100.

In some embodiments, as shown in FIG. 1, the bicycle 100 may also include a chain 30. The drive assembly 20 may be drivingly connected to the inner three speed member 12 by a chain 30. In such an embodiment, the inner three-speed member 12 can be driven by the common chain 30, thereby minimizing structural modifications to the bicycle 100 and reducing the design and manufacturing costs of the bicycle 100.

In some embodiments, as shown in FIG. 1, the bicycle 100 may also include a handlebar and brake operating portion 50. The brake operating portion 50 may be disposed on the handlebar 40 for operating the drum brake 13.

In such embodiments, the brake operating portion 50 is disposed on the handlebar 40 to facilitate operation by a user of the bicycle 100.

In some embodiments, as shown in fig. 1, the brake operating portion 50 may be a brake lever. However, it should be understood that the form of the brake operating portion 50 is not limited to the brake lever, and may be other forms such as a brake pedal.

In some embodiments, as shown in fig. 2 and 6, the wheel 11 may further include spokes 112 and a rim 113. The spokes 112 and the rim 113 may be integrally formed with the hub 111. In such an embodiment, the integral molding of the entire wheel 11 enables the wheel 11 to be stronger. In addition, the wheel 11 formed integrally has no seam, so that the wheel 11 can be more beautiful.

In some embodiments, the outer periphery of the inner third speed member 12 may be arranged with a first coupling portion (not shown in the figures). A second coupling portion (not shown in the figures) adapted to be drivingly coupled with the first coupling portion may be arranged in the hub 111.

In such an embodiment, the power can be transmitted between the inner three-speed member 12 and the wheel 11 by the drive coupling of the first coupling portion on the inner three-speed member 12 and the second coupling portion in the hub 111, so that the wheel 11 can be conveniently driven.

In some embodiments, the first coupling portion may include a detent (not shown). The second coupling part may include a ratchet (not shown in the drawings). It should be understood that the positions of the pawl and ratchet teeth may be interchanged.

In such an embodiment, the ratchet mechanism with the pawl and the ratchet matched is simple in structure and reliable in transmission, so that the pawl and the ratchet can simplify the structure of the wheel 11 and the inner three-speed component 12, and the reliability of transmission between the inner three-speed component 12 and the wheel 11 can be improved. However, it should be understood that the coupling structure between the inner three-speed member 12 and the wheel 11 is not limited to the ratchet mechanism, and other one-way transmission mechanisms, such as a one-way clutch, etc., may also be used.

In some embodiments, as shown in FIG. 3, a brake aperture 114 may be provided in the hub 111. Drum brake 13 may include brake shoe 131. Brake shoes 131 may be disposed within brake bores 114 and adapted to cooperate with brake bores 114 to brake wheel 11.

In such an embodiment, the drum brake 13 can be directly coupled to the hub 111 of the wheel 11 to brake the wheel 11, so that the braking effect of the drum brake 13 can be improved. In certain embodiments, as shown in fig. 2 and 3, the wheel assembly 10 may further include a drum brake lock 14. A drum brake lock 14 may be arranged on the drum brake 13 for locking the drum brake 13.

In such an embodiment, the wheel assembly 10 can be locked by locking the drum brake 13, thereby enabling the locking of the wheel assembly 10 to be facilitated. In some embodiments, as shown in fig. 1 and 7-10, the wheel assembly 10 may be secured to the bicycle 100 by a nut 15.

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 (23)

1. A hub, comprising:

the hub shell is provided with an external thread connected with the hub; the interior of the hub shell is provided with a through channel;

the bearing is arranged in the through channel;

and the wheel shaft is arranged in the bearing.

2. The hub according to claim 1, wherein a brake disc is mounted outside the hub shell.

3. The hub according to claim 2, wherein the brake disc is threadedly connected to the hub shell.

4. The hub as claimed in claim 2, wherein the brake disc is provided with a lock hole for cooperating with the lock tongue.

5. Hub according to any of claims 1-4, wherein the hub shell has a large diameter end and a small diameter end.

6. The hub according to claim 5, wherein at least a portion of the large diameter end is beveled.

7. A hub unit, comprising: a hub and a hub shell;

the hub is rotatable about a wheel axis;

the hub shell is in threaded connection with the hub for mounting the axle to the hub.

8. A hub unit according to claim 7, wherein the hub shell has a through passage therein;

the hub unit further includes:

the bearing is arranged in the through channel;

and the wheel shaft is arranged in the bearing.

9. A hub unit according to claim 7, characterized in that a brake disc is mounted outside the hub shell and located outside the hub.

10. A hub unit according to claim 9, characterized in that there is a gap between the brake disc and the hub.

11. A hub unit according to claim 9, characterized in that the brake disc is threadedly connected to the hub shell.

12. A hub unit according to claim 9, wherein the brake disc is provided with a locking hole for engagement with a locking tongue.

13. A wheel assembly, comprising: wheel, hub mounted on the wheel and hub according to any one of claims 1 to 6, the hub having an annular mounting cavity for mounting a hub shell, the inner wall of the mounting cavity being provided with an internal thread for connection with the hub shell.

14. The wheel assembly of claim 13, wherein the hub defines a stop surface, the wheel assembly further comprising a stop portion and a locking ring, the stop portion being mounted on the hub opposite the stop surface; the locking ring is sleeved on the hub shell, and two ends of the locking ring are respectively abutted against the stop surface and the stop portion.

15. The wheel assembly of claim 14, wherein the locking ring is threadably connected to the hub shell.

16. The wheel assembly of claim 14, further comprising a flywheel and a brake disc disposed on either side of the hub shell.

17. The wheel assembly of claim 13, wherein the mounting cavity has a small aperture portion and a large aperture portion.

18. The wheel assembly of claim 17, wherein the interface of the small bore portion and the large bore portion is a chamfer.

19. A wheel assembly, comprising: wheel and hub unit according to any one of claims 7-12, the hub having an annular mounting cavity for mounting a hub shell, the inner wall of the mounting cavity being provided with an internal thread for connection to the hub shell.

20. The wheel assembly of claim 19, wherein the hub defines a stop surface, further comprising a stop portion and a locking ring, the stop portion being mounted on the hub opposite the stop surface; the locking ring is sleeved on the hub shell, and two ends of the locking ring are respectively abutted against the stop surface and the stop portion.

21. The wheel assembly of claim 20, wherein the locking ring is threadably connected to the hub shell.

22. A bicycle, comprising: a vehicle frame and a wheel assembly as claimed in any one of claims 13 to 21.

23. The bicycle of claim 22, further comprising a lock, wherein the lock is provided with a hall sensor, and wherein the brake disc of the wheel assembly is provided with a magnet.

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