CN214823894U - Wheel hub subassembly, brake disc, brake subassembly, wheel subassembly and two wheeler - Google Patents

Abstract

The utility model discloses a wheel hub subassembly, brake disc, brake subassembly, wheel subassembly and two wheeler, wheel hub subassembly include the wheel hub shell, and the wheel hub shell has the first connecting portion that sets up along the extending direction of first axis, and first axis is the rotation axis of wheel hub subassembly, and first connecting portion are configured to be connected with the brake disc, and the surface that first connecting portion are connected with the brake disc is first non-surface of revolution. Therefore, the technical scheme of the utility model can make things convenient for the assembly of brake disc and wheel hub subassembly, when guaranteeing that the wheel can normally rotate, can avoid taking place between brake disc and the wheel hub subassembly not hard up and influence normal brake function, guaranteed user's safety.

Description

Wheel hub subassembly, brake disc, brake subassembly, wheel subassembly and two wheeler

Technical Field

The utility model relates to a wheel hub subassembly, brake disc, brake subassembly, wheel subassembly and two wheeler.

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 use vehicles such as bicycles and electric bicycles when going out. The vehicle is usually provided with a brake device at a wheel to realize the braking function, wherein one brake device is to fix a brake disc at a hub of the wheel, and the brake disc and the wheel connected with the brake disc are slowed down or even stopped rotating by adopting friction, tension and other modes. However, the existing brake disc is easy to loosen in the using process, and certain potential safety hazards are brought to users.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a wheel hub subassembly, brake disc, brake subassembly, wheel subassembly and two wheeler for solve and take place not hard up problem easily between brake disc and the wheel hub subassembly.

In a first aspect, an embodiment of the present invention provides a hub assembly, the hub assembly includes a hub shell, the hub shell has a first connecting portion disposed along an extending direction of a first axis, the first axis is a rotating shaft of the hub assembly, the first connecting portion is configured to be connected with a brake disc, and a surface of the first connecting portion connected with the brake disc is a first non-revolution surface.

Further, the first non-revolution surface comprises a first arc surface and a first limit surface, the first arc surface uses the first axis as a central axis, and the first arc surface and the first limit surface are arranged along the circumferential direction of the first axis.

Further, the first cambered surface is a smooth curved surface, and the ratio of the distance from at least one point on the first limiting surface to the first axis to the distance from the first cambered surface to the first axis is not equal to 1; or, the first cambered surface is a threaded surface, and the ratio of the distance from at least one point on the first limiting surface to the first axis to the nominal diameter of the first cambered surface is not equal to 0.5.

Further, a cross-sectional profile of the first non-surface of revolution perpendicular to the first axis is polygonal.

Further, the hub shell also has a first mounting hole therethrough along a first axis, the hub assembly also includes an axle and a bearing; the wheel shaft penetrates through the first mounting hole; the bearing sleeve is arranged on the periphery of the wheel shaft and arranged in the first mounting hole.

Further, the hub shell also has a wheel connecting structure, the wheel connecting structure is configured to be connected with a wheel body, the wheel connecting structure and the first non-revolution surface are sequentially arranged on the outer surface of the hub shell along the direction of the first axis, and the hub shell is configured to be connected with an expansion brake.

In a second aspect, the brake disc has a second connecting portion disposed along an extending direction of a second axis, the second axis being a rotation axis of the brake disc, the second connecting portion is configured to be connected to a hub assembly, and a surface of the second connecting portion connected to the hub assembly is a second non-revolution surface.

Further, the second non-revolution surface comprises a second arc surface and a second limiting surface, the second arc surface uses the second axis as a central axis, and the second arc surface and the second limiting surface are arranged along the circumferential direction of the second axis.

Furthermore, the second limiting surface is a smooth curved surface, and the ratio of the distance from at least one point on the second limiting surface to the second axis to the distance from the second arc surface to the second axis is not equal to 1; or the second cambered surface is a threaded surface, and the ratio of the distance from at least one point on the second limiting surface to the second axis to the nominal diameter of the second cambered surface is not equal to 0.5.

Further, a cross-sectional profile of the second non-surface of revolution perpendicular to the first axis is polygonal.

In a third aspect, an embodiment of the present invention further provides a brake assembly, including a hub assembly and a brake disc; the hub assembly comprises a hub shell comprising a first connection portion arranged along an extension direction of a first axis, the first axis being a rotation axis of the hub assembly; the brake disc is provided with a second connecting part arranged along the extension direction of a second axis, the second axis is a rotating shaft of the brake disc, and the second connecting part is connected with the first connecting part; the surface of the first connecting part connected with the brake disc is a first non-revolution surface, and the surface of the second connecting part connected with the first connecting part is a second non-revolution surface; the first axis coincides with the second axis.

Further, the first non-revolution surface comprises a first arc surface and a first limit surface, the first arc surface takes the first axis as a central axis, and the first arc surface and the first limit surface are arranged along the circumferential direction of the first axis; the second non-revolution surface comprises a second arc surface and a second limiting surface, the second arc surface uses the second axis as a central axis, the second arc surface and the second limiting surface are arranged along the circumferential direction of the second axis, the second arc surface corresponds to the first arc surface, and the second limiting surface corresponds to the first limiting surface.

Further, the first arc surface and the second arc surface are smooth curved surfaces, the ratio of the distance from at least one point on the first limiting surface to the first axis to the distance from the first arc surface to the first axis is not equal to 1, and the ratio of the distance from at least one point on the second limiting surface to the second axis to the distance from the second arc surface to the second axis is not equal to 1; or the first cambered surface and the second cambered surface are threaded surfaces, the ratio of the distance from at least one point on the first limiting surface to the first axis to the nominal diameter of the first cambered surface is not equal to 0.5, and the ratio of the distance from at least one point on the second limiting surface to the second axis to the nominal diameter of the second cambered surface is not equal to 0.5.

Further, a cross-sectional profile of the first non-surface of revolution perpendicular to the first axis and a cross-sectional profile of the second non-surface of revolution perpendicular to the second axis are polygonal.

Further, the hub shell also has a first mounting hole therethrough along a first axis, the hub assembly also includes an axle and a bearing; the wheel shaft penetrates through the first mounting hole; the bearing sleeve is arranged on the periphery of the wheel shaft and arranged in the first mounting hole.

Further, the hub shell also has a wheel connection structure configured to be connected with a wheel body, and the wheel connection structure and the first non-revolution surface are sequentially arranged on the outer surface of the hub shell along the direction of the first axis.

Further, the hub assembly further has a third connecting portion disposed on the axle or the hub shell, the third connecting portion being disposed on a side of the first connecting structure away from the wheel connecting structure; the brake assembly further comprises a locking component, and the locking component is connected with the third connecting portion to axially fix the brake disc.

Further, the third connecting portion is adjacent to the first connecting portion in the direction of the first axis, and the shape of the third connecting portion is the same as that of the first connecting portion.

Further, the brake assembly further comprises a brake shoe, the brake shoe is arranged in the brake disc, the brake disc is an expanding brake disc, the brake shoe is provided with a second mounting hole, and the second mounting hole is formed in the periphery of the locking component and has a preset gap with the locking component.

In a fourth aspect, the embodiment of the present invention further provides a wheel assembly, including a wheel body and a wheel hub assembly as in the first aspect, the wheel hub assembly is fixedly connected to the wheel body.

Further, the wheel body comprises a hub sleeve, a spoke and a rim, the hub sleeve is arranged on the inner side of the rim, the spoke is connected with the rim and the hub sleeve, and the hub assembly is fixedly connected with the hub sleeve; or, the wheel body includes spoke and rim, the one end of spoke with the wheel hub subassembly is connected, the other end with the rim is connected.

In a fifth aspect, an embodiment of the present invention further provides a two-wheeled vehicle, including a frame, a wheel body, and at least one brake assembly as described in the third aspect; the wheel body is connected with the frame; the wheel hub assembly is fixedly connected with the wheel body.

Further, the wheel body comprises a hub sleeve, a spoke and a rim, the hub sleeve is arranged on the inner side of the rim, the spoke is connected with the rim and the hub sleeve, and the hub assembly is fixedly connected with the hub sleeve; or, the wheel body includes spoke and rim, the one end of spoke with the wheel hub subassembly is connected, the other end with the rim is connected.

The embodiment of the utility model provides a wheel hub subassembly, brake disc, brake subassembly, wheel subassembly and two wheeler, the wheel hub subassembly includes the wheel hub shell, the wheel hub shell has the first connecting portion that sets up along the extending direction of the first axis of wheel hub subassembly, first connecting portion are used for being connected with the brake disc, the brake disc has the second connecting portion that sets up along the extending direction of the second axis of brake disc, the second connecting portion are used for being connected with the wheel hub subassembly; first connecting portion set up first non-surface of revolution, second connecting portion set up the non-surface of revolution of second, realize being connected of wheel hub subassembly and brake disc through the cooperation of first non-surface of revolution and the non-surface of revolution of second, and convenient assembling when guaranteeing that the wheel can normally rotate, avoids taking place not hard up between brake disc and the wheel hub subassembly and influences normal brake function, has guaranteed user's safety.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of a perspective assembly relationship between a brake assembly and a wheel body according to an embodiment of the present invention;

FIG. 2 is a schematic view of the brake assembly of the embodiment of the present invention assembled to a wheel body from another perspective;

fig. 3 is a schematic view of a partial explosion structure of the brake assembly and the wheel body according to the embodiment of the present invention;

fig. 4 is a schematic view, partially in section, of a brake assembly and a wheel body in accordance with an embodiment of the present invention;

fig. 5 is a schematic perspective view of a hub assembly according to an embodiment of the present invention;

fig. 6 is an elevation view of a hub assembly in accordance with an embodiment of the present invention;

fig. 7 is an enlarged partial schematic view of a hub assembly at a in accordance with an embodiment of the present invention;

fig. 8 is a schematic perspective view of another hub assembly according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a brake disc according to an embodiment of the present invention;

fig. 10 is a front view of a brake disc according to an embodiment of the present invention;

fig. 11 is a schematic cross-sectional view of a brake disc along plane B-B according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of a second connecting portion of another brake disc according to an embodiment of the present invention.

Description of reference numerals:

AX 1-first axis; AX 2-second axis;

1-a hub assembly; 11-a hub shell; 111-a first connection; 111 a-first cambered surface; 111 b-a first stop surface; 112-wheel connection structure; 113-flywheel connection; 114-a third connection; 115-a first mounting hole; 12-an axle; 13-a bearing; 14-a bearing cap; 15-tightening the nut.

2-brake disc; 21-a second connection; 211-second cambered surface; 212-a second limit surface;

3-a wheel body; 31-a hub sleeve; 32-spokes; 33-a rim;

4-a locking member;

5-brake shoe block; 51-a second mounting hole;

6-a flywheel;

7-brake box.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this specification, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Spatially relative terms, such as "inner," "outer," "below," "lower," "above," "upper," and the like, are used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1-4 are schematic views illustrating a connection relationship between a brake assembly and a wheel body according to an embodiment of the present invention, in order to facilitate the display of the connection relationship between the brake assembly and the wheel body, the structures of the wheel body and other components are not completely displayed in fig. 1 to 4. As shown in fig. 1 to 4, the brake assembly of the present embodiment includes a hub assembly 1 and a brake disc 2. The hub unit 1 is connected to the wheel body 3, and serves as a rotation center of the wheel body 3 to support the wheel body 3 to rotate. Brake disc 2 and wheel hub subassembly 1 fixed connection, through braking brake disc 2, can realize the braking to wheel hub subassembly 1 and wheel body 3, realize the brake function.

Fig. 5-7 are schematic structural views of a hub assembly according to an embodiment of the present invention, wherein fig. 7 is a partially enlarged schematic view of a portion a in fig. 6. Fig. 8 is a schematic structural view of another hub assembly according to an embodiment of the present invention. Referring to fig. 1-8, the hub assembly 1 includes a hub shell 11, the hub shell 11 including a wheel connecting structure 112 and a first connecting portion 111, the wheel connecting structure 112 and the first connecting portion 111 being arranged in series along an extending direction of a first axis AX 1. The first axis AX1 is a rotation axis of the hub unit 1 and is a virtual straight line. The wheel connecting structure 112 is used for connecting with the wheel body 3, and the first connecting portion 111 is used for connecting with the brake disc 2. In the present embodiment, the wheel connecting structure 112 is provided at the middle portion of the hub assembly 1, and the first connecting portions 111 are provided at a certain distance apart or adjacently at one side of the wheel connecting structure 112 in the direction of the first axis AX 1. The other side of the wheel connection 112 may be provided with a driveline connection for connection to a driveline of the vehicle. For example, a bicycle is exemplified in which a chain (not shown) and a flywheel 6 are used as a transmission system, and the transmission system connection structure is specifically the flywheel connection structure 113. The flywheel connecting structure 113 is matched with the flywheel 6, and when the flywheel 6 is a rotary flywheel, the flywheel connecting structure 113 is a corresponding thread; when the flywheel 6 is a cassette flywheel, the flywheel connecting structure 113 is a corresponding spline shaft; the flywheel 6 and the flywheel connecting structure 113 can also be in transmission connection by adopting other corresponding connection modes. When the flywheel 6 rotates, the wheel body 3 connected with the hub component 1 is driven to rotate along with the hub component 1.

The surface of the first connection portion 111 connected to the brake disc 2 is a first non-rotation surface, in this embodiment, the first connection portion 111 is a shaft, the brake disc 2 has a corresponding hole, and the outer surface of the first connection portion 111 is a first non-rotation surface. If the brake disk 2 is provided with a shaft and the first connecting portion 111 is provided with a corresponding hole, the inner surface of the first connecting portion 111 (i.e., the inner wall of the hole) may be a first non-rotating surface.

In this document, a surface of revolution refers to a surface formed in space when revolving around a fixed straight line (axis) from a plane curve or a space curve, such as a cylindrical surface, a conical surface, a spherical surface, and the like. The surface not belonging to the revolution surface is the non-revolution surface.

Fig. 9 to 11 are schematic structural views of a brake disc of the present embodiment, wherein fig. 11 is a schematic view of the brake disc taken along the plane B-B in fig. 10. The brake disc 2 in fig. 9-11 is adapted to both the hub assembly 1 shown in fig. 5-7 and the hub assembly 1 shown in fig. 8. Referring to fig. 1 to 4 and 9 to 11, the brake disc 2 has a second connecting portion 21 disposed along a second axis AX2, and the second axis AX2 is a rotating shaft of the brake disc 2 and is a virtual straight line. The second connecting portion 21 is used for connecting with the hub assembly 1, and specifically, the second connecting portion 21 is connected with the first connecting portion 111 to realize the fixed connection of the brake disc 2 and the hub assembly 1. When the brake disc 2 is connected to the hub assembly 1, the second axis AX2 substantially coincides with the first axis AX1, and the brake disc 2 rotates synchronously with the hub assembly 1. In the present embodiment, the second connecting portion 21 has a hole matching the first connecting portion 111, and the inner surface of the second connecting portion 21 is a second non-rotation surface.

In some embodiments, as shown in fig. 5 to 8, the first non-rotating surface of the hub component 1 includes a first arc surface 111a and a first limiting surface 111b, the first arc surface 111a and the first limiting surface 111b are disposed along the circumferential direction of the hub component 1, and the first arc surface 111a is an arc surface with the first axis AX1 as the central axis.

The first curved surface 111a may be a thread surface (see fig. 5 to 7) or a smooth curved surface (see fig. 8). When the first cambered surface 111a is a smooth cambered surface, the ratio of the distance from at least one point on the first limiting surface 111b to the first axis AX1 of the hub component 1 to the distance from the first cambered surface 111a to the first axis AX1 (hereinafter, the distance is denoted as R) is not equal to 1, that is, at least a partial area on the first limiting surface 111b is higher or lower than the cylindrical surface on which the first cambered surface 111a is located; when the first cambered surface 111a is a threaded surface, the ratio of the distance from at least one point on the first stopper surface 111b to the first axis AX1 to the nominal diameter (hereinafter referred to as D1) of the first cambered surface 111a is not equal to 0.5, that is, the distance from at least a partial region on the first stopper surface 111b to the first axis AX1 is greater than or less than one-half of D1.

Correspondingly, as shown in fig. 9-11, the second non-rotation surface of the brake disc 2 has a second arc surface 211 corresponding to the first arc surface 111a, and a second limiting surface 212 corresponding to the first limiting surface 111b, and the second arc surface 211 is an arc surface with the second axis of the brake disc 2 as the central axis. Since the first axis AX1 and the second axis AX2 substantially coincide after the brake disc 2 is connected to the hub assembly 1, the distance between the second arc surface 211 and the second axis AX2 of the brake disc is substantially equal to R.

Similar to the first connecting portion 111 of the hub shell 11, the second arc surface 211 of the brake disc 2 may be a threaded surface (not shown) or a smooth curved surface (see fig. 9-11). When the second arc surface 211 is a smooth curved surface, the ratio of the distance from at least one point on the second limiting surface 212 to the second axis AX2 of the brake disc 2 to the distance (i.e., R) from the second arc surface 211 to the second axis AX2 is not equal to 1, that is, at least a partial area on the second limiting surface 212 is higher or lower than the cylindrical surface where the second arc surface 211 is located; when the second cambered surface 211 is a threaded surface, the ratio of the distance from at least one point on the second stopper surface 212 to the second axis AX2 to the nominal diameter (hereinafter referred to as D2) of the second cambered surface 211 is not equal to 0.5, that is, the distance from at least a partial region on the second stopper surface 212 to the second axis AX2 is greater than or less than one-half of D2. When the second arc surface 211 on the brake disc 2 and the first arc surface 111a on the hub shell 11 are corresponding thread surfaces, D1 is D2. After the brake disc 2 is connected to the hub assembly 1, that is, after the second connecting portion 21 is connected to the first connecting portion 111, the second limiting surface 212 is opposite to the first limiting surface 111b, so as to prevent the brake disc 2 from rotating relative to the hub assembly 1. The first and second limiting surfaces 111b and 212 may include flat and/or curved surfaces, and may be concave surfaces or convex surfaces (e.g., the first limiting surface 111b forms a protrusion, the second limiting surface 212 forms a corresponding groove, etc.).

In an alternative embodiment, as shown in fig. 5-7, the first arc surface 111a is a threaded surface, and the distances from each point on the first limiting surface 111b to the first axis are less than half of the nominal diameter D1 of the first arc surface 111 a. Thus, the hub unit 1 has a plurality of connection modes, the hub unit 1 can be connected with the brake disc 2 (refer to fig. 9-11) with a hole matched with the shape of the first connection part 111 in an insertion mode, and can also be connected with the brake disc 2 with a threaded hole with the nominal diameter equal to D1 in a threaded mode, and the application range of the hub unit 1 can be expanded.

Fig. 12 is a schematic cross-sectional view of a second connecting portion of another brake disc according to an embodiment of the present invention. Referring to fig. 12, in another alternative embodiment, the second arc surface 211 of the brake disc 2 is a threaded surface, and the distances from each point on the second limiting surface 212 to the second axis are both greater than one-half of the nominal diameter D2 of the second arc surface 211. Therefore, the brake disc 2 has a plurality of connection modes, the brake disc 2 can be connected with the hub assembly 1 with the first connection part 111 matched with the shape of the second connection part 21 in an inserting mode, and can also be connected with the hub assembly 1 with the external thread with the nominal diameter equal to D2 in a threaded mode, and the application range of the brake disc 2 can be expanded.

The arrangement of the first cambered surface 111a and the first limiting surface 111b can be selected in various ways. For example, the first non-rotating surface may be composed of a first arc surface 111a and a first stopper surface 111b, the first arc surface 111a and the first stopper surface 111b being joined end to form a closed surface around the outer periphery of the first axis AX 1. The first non-rotating surface may also include a plurality of first arc surfaces 111a and a plurality of first limiting surfaces 111b, the plurality of first arc surfaces 111a and the plurality of first limiting surfaces 111b are arranged alternately, and distances from the plurality of first arc surfaces 111a to the first axis AX1 are equal. Preferably, the shape of the first connecting portion 111 may be provided to be centrosymmetric with respect to the first axis AX1, which can improve the convenience in assembling the hub assembly 1 with the brake disc 2. Taking the example that the distance from each point on the first limiting surface 111b to the first axis AX1 is smaller than the distance R from the first arc surface 111a to the first axis AX1 (corresponding to fig. 5-8), when the first connecting portion 111 is machined, the first connecting portion 111 may be first manufactured into a circular shaft with a radius R, and then a part of the material may be removed by milling, cutting, or the like, to form the first limiting surface 111 b.

In some embodiments, the cross-sectional profile of the first non-surface of revolution perpendicular to the first axis AX1 can also be polygonal (not shown), such as triangular, rectangular, hexagonal, star-shaped, and the like. The cross-sectional profile of the second non-revolution surface of the brake disc 2 perpendicular to the second axis AX2 is a corresponding polygon, that is, the second connecting portion 21 of the brake disc 2 has a polygonal hole corresponding to the first non-revolution surface, and after the second connecting portion 21 is connected with the first connecting portion 111, the brake disc 2 and the hub assembly 1 can be prevented from rotating relatively.

Referring again to fig. 1-8, the hub assembly 1 further comprises an axle 12 and a bearing 13. The hub shell 11 has a first mounting hole 115 penetrating along an axis, the axle 12 is inserted into the first mounting hole 115, and the bearing 13 is sleeved on the outer periphery of the axle 12 and disposed in the first mounting hole 115 to support the hub shell 11 and the wheel body 3 connected to the hub shell 11 to rotate around the axle 12. The bearings 13 include two bearings 13, and the two bearings 13 are respectively disposed at both ends of the first mounting hole 115. The bearing cover 14 can be further arranged on one side of the two bearings 13 facing the outside of the first mounting hole 115, so that the influence of impurities entering the bearings 13 on the normal rotation of the wheel is avoided. The hub assembly 1 may further comprise two fastening nuts 15, the two fastening nuts 15 corresponding to the two bearings 13, respectively disposed at two sides of the hub shell 11 and screwed on the wheel axle 12, for axially locking the bearing cover 14 and the bearings 13 to prevent the bearings 13 from being axially loosened. Of course, the bearing 13 may also be axially fixed in other possible ways.

The first connecting portion 111 and the wheel connecting structure 112 and the freewheel connecting structure 113 are respectively non-overlapping portions of the hub shell 11, and the freewheel connecting structure 113, the wheel connecting structure 112 and the first connecting portion 111 are sequentially arranged along the first axis AX 1. Referring to fig. 5-6 and 8, the wheel attachment structure 112, the freewheel attachment structure 113 and the first non-return surface can all be disposed on an outer surface of the hub shell 11.

The hub 1 further has a third connecting portion, and the brake assembly further includes a locking member 4, the locking member 4 being connected to the third connecting portion to axially fix the brake disc 2, preventing the brake disc 2 from moving axially along the hub assembly 1. The third connecting portion can be disposed on the axle 12 or the hub shell 11, such as the third connecting portion 114 in this embodiment disposed on the hub shell 11. The wheel connecting structure 112, the first connecting portion 111, and the third connecting portion 114 are arranged in this order in the direction of the first axis AX1 of the hub assembly 1, and the third connecting portion 114 is provided on the side of the first connecting portion 111 away from the wheel connecting structure 112.

The manner in which the locking member 4 axially secures the brake disc 2 is a variety of options. For example, a stopper may be formed between the first connection portion 111 of the hub shell 11 and the wheel connection structure 112, one end of the brake disc 2 abuts against the stopper, and the locking member 4 is connected to the third connection portion 114 and presses the brake disc 2 against the stopper from the other end of the brake disc 2. After the second connecting portion 21 of the brake disc 2 is clamped into the first connecting portion 111 of the hub assembly 1, the brake disc is locked by the locking component 4, so that the brake disc is convenient to assemble. Simultaneously, compare with pure adoption threaded connection mode fixed brake disc and wheel hub subassembly, be difficult to take place circumference between the brake disc of this embodiment and the wheel hub subassembly not hard up, and the brake disc that adopts threaded connection mode takes place not hard up because with the friction of brake shoe block easily in the use, especially to the vehicle that is furnished with the brake lock, when the lock car state, if rotate the wheel backward, the tool to lock can make the brake disc rotatory and the pine take off to the reaction force that the brake disc produced, leads to the brake failure easily.

There are many options for the specific arrangement of the third connecting portion 114 and the locking member 4. For example, the third connecting portion 114 may have an external thread, and the locking member 4 has a corresponding threaded hole; the third connecting portion 114 may also have a threaded hole extending in the radial direction of the hub assembly 1, and the locking component 4 includes a fixing sleeve and a screw, the fixing sleeve has a fixing hole corresponding to the threaded hole, and the screw passes through the fixing hole to be connected with the threaded hole after the fixing sleeve is disposed on the periphery of the third connecting portion 114; the third connecting portion 114 may also have a slot, and the locking component 4 has a corresponding buckle, etc., the present invention does not impose too many restrictions on the specific form of the third connecting portion 114 and the locking component 4. In this embodiment the third connecting portion 114 has an external thread and the locking part 4 has a corresponding threaded hole. Alternatively, as shown in fig. 5 to 7, the third connecting portion 114 is disposed adjacent to the first connecting portion 111, and the third connecting portion 114 has the same shape as the first connecting portion 111 and has external threads with the same nominal diameter, so as to facilitate machining.

The wheel hub assembly 1 is connected with the wheel body 3 to form a wheel assembly. Referring to fig. 1-4, in an alternative embodiment, the wheel body 3 includes a hub sleeve 31, a spoke 32 and a rim 33, the hub sleeve 31 is disposed inside the rim 33 and is coaxially disposed with the rim 33, the spoke 32 connects the rim 33 and the hub sleeve 31, and the wheel connecting structure 112 is fixedly connected with the hub 31. The spokes 32 may be plate-shaped spokes 32 of a rigid structure, and the hub sleeve 31, the spokes 32 and the rim 33 may be manufactured by integral molding. The wheel connecting structure 112 may be an external thread, a polygonal shaft, or the like, the wheel hub 31 has a corresponding threaded hole, polygonal hole, or the like, and the wheel connecting structure 112 is connected to the wheel hub 31. In this embodiment, the wheel connecting structure 112 includes an external thread provided on the hub shell 11, the hub 31 has a threaded hole matching with the wheel connecting structure 112, and the hub assembly 1 is threadedly connected with the hub sleeve 31. Preferably, a stopper is disposed on the wheel connecting structure 112 side of the hub shell 11, the stopper is in interference fit with the hub shell 11, and the stopper is locked to the end surface of the hub 31 by screws, so as to axially fix the hub assembly 1.

In another alternative embodiment, the wheel body 3 includes a plurality of spokes and a rim, and one end of each spoke is fixedly connected to the rim and the other end is fixedly connected to the wheel connecting structure of the hub shell 11. The spokes may be relatively strong metal spokes that are pulled by tension to maintain their shape, and correspondingly, the wheel connecting structure is a plurality of spoke holes (not shown) distributed along the circumferential direction of the hub shell.

Referring to fig. 4, the brake assembly further includes a brake shoe 5, and the brake shoe 5 is moved by the transmission mechanism to contact and rub a braking surface of the brake disc 2, thereby braking the brake disc 2. In the present embodiment, the disc 2 is an expansion brake disc. The brake shoes 5 may be arranged in the brake disc 2, the braking surface of the brake disc 2 being correspondingly arranged on the inner side of the brake disc 2. Correspondingly, the brake shoe 5 is provided with a second mounting hole 51, the second mounting hole 51 surrounds the periphery of the locking component 4, and the size of the second mounting hole 51 is larger than that of the locking component 4, so that the brake shoe 5 is prevented from colliding or scraping with the locking component 4 in the braking process of the brake disc 2. Of course, the braking surface of the brake disc 2 can also be arranged on the outside of the brake disc 2, and the brake shoes 5 are correspondingly arranged on the outside of the brake disc 2.

Referring to fig. 3 and 4, the brake assembly further includes a brake box 7, the brake box 7 may be fixedly connected to the vehicle frame, and the brake shoe 5 is disposed inside the brake box 7. The brake box 7 is arranged on one side of the brake disc 2 far away from the wheel body 3 and shields the brake disc 2 and the brake shoe 5, and the situation that sundries enter the brake disc 2 to influence the normal work of the brake assembly is avoided.

The utility model discloses in at least some embodiments brake subassembly can be applied to wheeled vehicle for brake the wheel. Preferably, the brake assembly can be applied to a two-wheeled vehicle, such as a bicycle, an electric bicycle, a scooter, etc. The two-wheeled vehicle includes frame (not shown), two wheel bodies 3 and at least one the utility model discloses the brake subassembly in at least some embodiments. Two wheel (front wheel and rear wheel) bodies are respectively arranged at the front part and the rear part of the frame, and a hub component 1 of the brake component is connected with a wheel body 3 to form the wheel component. The two-wheeled vehicle can be provided with the brake component, the brake component can be arranged at the front wheel or the rear wheel, and the other wheel body 3 can be provided with no brake device or other brake devices according to the requirement on braking force; the two wheeler also can all set up in 3 departments of two wheel bodies the utility model discloses the brake subassembly of embodiment.

The embodiment of the utility model provides a wheel hub subassembly, brake disc, brake subassembly, wheel subassembly and two wheeler, the wheel hub subassembly includes the wheel hub shell, the wheel hub shell has the first connecting portion that sets up along the extending direction of the first axis of wheel hub subassembly, first connecting portion are used for being connected with the brake disc, the brake disc has the second connecting portion that sets up along the extending direction of the second axis of brake disc, the second connecting portion are used for being connected with the wheel hub subassembly; first connecting portion set up first non-surface of revolution, second connecting portion set up the non-surface of revolution of second, realize being connected of wheel hub subassembly and brake disc through the cooperation of first non-surface of revolution and the non-surface of revolution of second, and convenient assembling when guaranteeing that the wheel can normally rotate, avoids taking place not hard up between brake disc and the wheel hub subassembly and influences normal brake function, has guaranteed user's safety.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (23)

1. A hub assembly, comprising a hub shell having a first connection portion disposed along an extending direction of a first axis, the first axis being a rotation axis of the hub assembly, the first connection portion being configured to be connected to a brake disc, a surface of the first connection portion connected to the brake disc being a first non-revolution surface.

2. The hub assembly of claim 1, wherein the first non-rotating surface includes a first arc surface centered about the first axis and a first retaining surface disposed circumferentially about the first axis.

3. The hub assembly of claim 2, wherein the first cambered surface is a smooth curved surface, and a ratio of a distance from at least one point on the first limiting surface to the first axis to a distance from the first cambered surface to the first axis is not equal to 1; alternatively, the first and second electrodes may be,

the first cambered surface is a threaded surface, and the ratio of the distance from at least one point on the first limiting surface to the first axis to the nominal diameter of the first cambered surface is not equal to 0.5.

4. The hub assembly of claim 1, wherein a cross-sectional profile of the first non-surface of revolution perpendicular to the first axis is polygonal.

5. The hub assembly of any one of claims 1-4, wherein the hub shell further has a first mounting hole therethrough along the first axis, the hub assembly further comprising:

the wheel shaft penetrates through the first mounting hole; and

the bearing is sleeved on the periphery of the wheel shaft and arranged in the first mounting hole.

6. The hub assembly of claim 5, wherein the hub shell further comprises a wheel attachment structure configured to couple to a wheel body, the wheel attachment structure and the first non-surface of revolution being disposed on an outer surface of the hub shell in sequence along the direction of the first axis, the hub shell being configured to couple to an expansion brake.

7. A brake disc is characterized in that the brake disc is provided with a second connecting portion arranged along the extension direction of a second axis, the second axis is a rotating shaft of the brake disc, the second connecting portion is configured to be connected with a hub assembly, and the surface of the second connecting portion, which is connected with the hub assembly, is a second non-revolution surface.

8. The brake disc of claim 7, wherein the second non-rotating surface comprises a second arc surface and a second limiting surface, the second arc surface is centered on the second axis, and the second arc surface and the second limiting surface are arranged along the circumference of the second axis.

9. The brake disc of claim 8, wherein the second limiting surface is a smooth curved surface, and a ratio of a distance from at least one point on the second limiting surface to the second axis to a distance from the second arc surface to the second axis is not equal to 1; alternatively, the first and second electrodes may be,

the second cambered surface is a threaded surface, and the ratio of the distance from at least one point on the second limiting surface to the second axis to the nominal diameter of the second cambered surface is not equal to 0.5.

10. The brake disc of claim 7 wherein the cross-sectional profile of the second non-surface of revolution perpendicular to the second axis is polygonal.

11. A brake assembly, comprising:

a hub assembly including a hub shell including a first connection portion disposed along an extending direction of a first axis, the first axis being a rotation axis of the hub assembly; and

the brake disc is provided with a second connecting part arranged along the extension direction of a second axis, the second axis is a rotating shaft of the brake disc, and the second connecting part is connected with the first connecting part;

the surface of the first connecting part connected with the brake disc is a first non-revolution surface, and the surface of the second connecting part connected with the first connecting part is a second non-revolution surface;

the first axis coincides with the second axis.

12. The brake assembly of claim 11, wherein the first non-rotating surface includes a first arc surface and a first stop surface, the first arc surface centered on the first axis, the first arc surface and the first stop surface circumferentially disposed about the first axis;

the second non-revolution surface comprises a second arc surface and a second limiting surface, the second arc surface uses the second axis as a central axis, the second arc surface and the second limiting surface are arranged along the circumferential direction of the second axis, the second arc surface corresponds to the first arc surface, and the second limiting surface corresponds to the first limiting surface.

13. The brake assembly of claim 12, wherein the first and second arcuate surfaces are smooth curved surfaces, a ratio of a distance from at least one point on the first retaining surface to the first axis to a distance from the first arcuate surface to the first axis is not equal to 1, and a ratio of a distance from at least one point on the second retaining surface to the second axis to a distance from the second arcuate surface to the second axis is not equal to 1; alternatively, the first and second electrodes may be,

the first cambered surface and the second cambered surface are threaded surfaces, the ratio of the distance from at least one point on the first limiting surface to the first axis to the nominal diameter of the first cambered surface is not equal to 0.5, and the ratio of the distance from at least one point on the second limiting surface to the second axis to the nominal diameter of the second cambered surface is not equal to 0.5.

14. The brake assembly of claim 11, wherein a cross-sectional profile of the first non-rotating surface perpendicular to the first axis and a cross-sectional profile of the second non-rotating surface perpendicular to the second axis are polygonal.

15. The brake assembly of any one of claims 11-14, wherein the hub shell further has a first mounting bore therethrough along a first axis, the hub assembly further comprising:

the wheel shaft penetrates through the first mounting hole; and

the bearing is sleeved on the periphery of the wheel shaft and arranged in the first mounting hole.

16. The brake assembly of claim 15, wherein the hub shell further comprises a wheel attachment structure configured to attach to a wheel body, the wheel attachment structure and the first non-surface of revolution being disposed in series on an outer surface of the hub shell in the direction of the first axis.

17. The brake assembly of claim 16, wherein the hub assembly further has a third connecting portion disposed on the axle or the hub shell, the third connecting portion being disposed on a side of the first connecting structure remote from the wheel connecting structure;

the brake assembly further comprises a locking component, and the locking component is connected with the third connecting portion to axially fix the brake disc.

18. The brake assembly of claim 17, wherein the third connecting portion is disposed adjacent to the first connecting portion in a direction along the first axis, and the third connecting portion has a shape identical to the first connecting portion.

19. The brake assembly of claim 17, further comprising:

the brake shoe is arranged in the brake disc, the brake disc is an expansion brake disc, the brake shoe is provided with a second mounting hole, and the second mounting hole is arranged on the periphery of the locking component and has a preset gap with the locking component.

20. A wheel assembly, comprising:

a wheel body; and

the hub assembly of any of claims 1-6, being fixedly connected with the wheel body.

21. The wheel assembly as claimed in claim 20, wherein the wheel body includes a hub sleeve, a spoke and a rim, the hub sleeve being disposed inside the rim, the spoke connecting the rim and the hub sleeve, the hub assembly being fixedly connected with the hub sleeve; alternatively, the first and second electrodes may be,

the wheel body comprises a spoke and a rim, one end of the spoke is connected with the hub assembly, and the other end of the spoke is connected with the rim.

22. A two-wheeled vehicle, comprising:

a frame;

the wheel body is connected with the frame; and

the brake assembly of any one of claims 11-19, wherein the hub assembly is fixedly coupled to the wheel body.

23. The two wheeled vehicle of claim 22, wherein the wheel body includes a hub sleeve, a spoke and a rim, the hub sleeve being disposed inboard of the rim, the spoke connecting the rim and the hub sleeve, the hub assembly being fixedly connected to the hub sleeve; alternatively, the first and second electrodes may be,

the wheel body comprises a spoke and a rim, one end of the spoke is connected with the hub assembly, and the other end of the spoke is connected with the rim.

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