Hub and wheel end assembly

Abstract

The utility model discloses a hub and a wheel end assembly, the hub comprises a support cylinder and a rim mounting flange located outside the support cylinder, the rim mounting flange is provided with a plurality of tire bolt mounting holes, and the support cylinder is provided with a brake disc connecting end fixedly connected with a brake disc. The end face of the brake disc connecting end is provided with a limiting protruding ring protruding in the axial direction and a plurality of limiting protruding blocks arranged at intervals, the radial inner circumferential faces of the limiting protruding blocks are fixedly connected with the outer circumferential face of the limiting protruding ring, the multiple limiting protruding blocks are evenly distributed around the center axis of the supporting cylinder in the circumferential direction, and mounting grooves are formed between the adjacent limiting protruding blocks. And first disc body bolt mounting holes are formed in the mounting grooves. The hub can be matched with the installation of a plane brake disc, and the connection reliability is high. The wheel end assembly with the hub and the plane brake disc is reliable in connection, the overall span is shortened, the weight is reduced, the installation occupied space is reduced, cost is saved, and economic benefits are increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile wheel end assemblies, and particularly relates to a hub and a wheel end assembly. Background Art

[0002] In traditional commercial vehicle wheel end assemblies, the hub and the brake disc are assembled and connected together. Commonly, the flange part of the hub is provided with first bolt mounting holes, one disc body side of the brake disc is connected with a connecting neck cylinder part, the outer end of the connecting neck cylinder part is provided with a flange part, the flange part is provided with second bolt mounting holes, and then bolts fix and connect the hub and the brake disc together through the first bolt mounting holes and the second bolt holes.

[0003] With the progress of technology, some brake discs are structurally optimized, the connecting neck cylinder part of the brake disc is omitted, the axial dimension of the brake disc is shortened, and the economic benefit of maintenance and replacement is high. This kind of brake disc omitting the connecting neck cylinder part is called a flat brake disc. In order to be assembled and installed on the wheel end in a matching manner with the flat brake disc, the existing hub structure needs to be improved. The improved hub should minimize the process difficulty while meeting the product performance and usage functions. Summary of the Utility Model

[0004] To overcome the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a hub and a wheel end assembly, the hub can match the installation of the flat brake disc, and has high connection reliability when connected and fixed with the flat brake disc, improve the performance of the wheel end assembly, and reduce the cost of the wheel end assembly.

[0005] To solve the above technical problem, the utility model adopts the following technical solutions:

[0006] A hub includes a support cylinder and a rim mounting flange located outside the support cylinder, and a plurality of tire bolt mounting holes are provided on the rim mounting flange.

[0007] The support cylinder is provided with a brake disc connection end fixedly connected with the brake disc. The end face of the brake disc connection end is provided with an axially protruding limit convex ring and a plurality of limit convex blocks arranged at intervals. The inner peripheral surface in the radial direction of the limit convex blocks is fixedly connected with the outer peripheral surface of the limit convex ring. The plurality of limit convex blocks are circumferentially and evenly distributed around the central axis of the support cylinder. An installation groove is provided between adjacent limit convex blocks, and a first disc body bolt mounting hole is provided at the installation groove.

[0008] Preferably: The support cylinder includes a first cylinder and a second cylinder. Along the axial direction of the hub, the first cylinder is located at the outer end of the rim mounting flange, the second cylinder is located at the inner end of the rim mounting flange, and the inner end of the second cylinder is the brake disc connection end.

[0009] Preferably, a plurality of first connecting ribs are fixed between one end face of the rim mounting flange and the outer peripheral surface of the first cylinder body, and a plurality of second connecting ribs are fixed between the other end face of the rim mounting flange and the outer peripheral surface of the second cylinder body.

[0010] Preferably, the plurality of first connecting ribs are circumferentially and uniformly distributed around the central axis of the support cylinder body, and the plurality of second connecting ribs are circumferentially and uniformly distributed around the central axis of the support cylinder body.

[0011] Preferably, the first connecting ribs and the second connecting ribs are arranged in one-to-one correspondence.

[0012] Preferably, a plurality of axially protruding rim retaining platforms are fixed on one end face of the rim mounting flange. The plurality of rim retaining platforms are circumferentially and uniformly distributed around the central axis of the support cylinder body. The rim retaining platforms are provided with outer arc surfaces, and the plurality of outer arc surfaces share a circumferential surface.

[0013] Preferably, the number of the first connecting ribs is twice the number of the rim retaining platforms.

[0014] Preferably, one rim retaining platform is correspondingly arranged at every other first connecting rib in the circumferential direction, and the first connecting rib corresponding to the rim retaining platform is connected to the inner side surface of the rim retaining platform.

[0015] As the same concept, the present invention discloses the following technical solutions:

[0016] A wheel end assembly includes the hub as described above.

[0017] Preferably, the wheel end assembly includes a flat brake disc. A plurality of connecting studs are arranged on the flat brake disc. The connecting studs are matched with the mounting grooves of the hub. Second disc bolt mounting holes are formed in the connecting studs. The disc bolts fixedly connect the flat brake disc and the hub through the second disc bolt mounting holes and the first disc bolt mounting holes.

[0018] After adopting the above technical solutions, the beneficial effects of the present invention are as follows:

[0019] When the hub of the present invention is provided with a brake disc connection end, a limiting convex ring and limiting convex blocks are arranged on the end face of the brake disc connection end, and mounting grooves are arranged between adjacent limiting convex blocks. The brake disc connection end with the above structure can match the installation of the flat brake disc. When the hub and the flat brake disc are fixedly connected by disc bolts, the connecting studs on the flat brake disc are inserted into the mounting grooves between adjacent limiting convex blocks. The limiting convex ring limits the flat brake disc in the radial inner side, and the limiting convex blocks limit the flat brake disc in the circumferential direction, and cooperate with the disc bolts to fixedly connect the hub and the flat brake disc.

[0020] The provision of the limiting bumps, mounting grooves and limiting rings on the hub enhances the strength of the connection structure of the hub, reduces the deformation of the connection structure under high torsional torque, and further improves the anti-rotation ability of the connection structure when the hub is fixedly connected to the planar brake disc, thereby improving the reliability of the connection and preventing the hub from disengaging from the planar brake disc.

[0021] Therefore, the wheel end assembly with the above-mentioned hub and planar brake disc has a reliable connection, improves the performance of the wheel end assembly, shortens the overall span of the wheel end assembly, reduces the weight, reduces the installation occupation space, saves costs, and increases economic benefits. Description of the Drawings

[0022] Figure 1 is a three-dimensional schematic diagram of the hub of the present utility model;

[0023] Figure 2 is Figure 1 a three-dimensional schematic diagram of the hub in the C direction in

[0024] Figure 3 is Figure 1 a front view schematic diagram of the hub in the D direction in

[0025] Figure 4 is Figure 3 a sectional view schematic diagram at A-A in

[0026] Figure 5 is a schematic diagram of the wheel end (hub fixedly connected to the planar brake disc) of the present utility model;

[0027] Figure 6 is Figure 5 a sectional view schematic diagram of the wheel end in

[0028] In the figures: L, hub; 1, support cylinder; 101, first cylinder; 102, second cylinder; 103, first connecting rib; 104, second connecting rib; 105, rim retaining platform; 1051, outer arc surface; 2, rim mounting flange; 20, brake disc connection end; 201, tire bolt mounting hole; 202, limiting ring; 203, limiting bump; 204, mounting groove; 2041, first disc body bolt mounting hole; 3, planar brake disc; 301, connecting stud; 302, second disc body bolt mounting hole; Z, planar brake disc; J, connection neck cylinder part of the hub. Detailed Description of the Invention

[0029] The technical solution of the present utility model will be described in detail below in conjunction with the drawings and specific embodiments to further understand the purpose, solution and efficacy of the present utility model, but it is not intended to limit the scope of protection of the appended claims of the present utility model.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0031] In addition, although terms such as first, second, third, etc. may be used in the text to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms can only be used to distinguish one element, component, region, layer, or section from another region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first", "second", etc. and other numerical terms do not imply an order or sequence when used in the text. Therefore, the first element, component, region, layer, or section discussed below can be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0032] When the wheel end assembly and the axle are installed on a vehicle, the compartment area between the wheels on both sides is set as the "inner" direction. Conversely, the area outside both sides of the compartment is the "outer" direction.

[0033] As Figures 1 to 4 shown, the hub L includes a support cylinder 1 and a rim mounting flange 2 located outside the support cylinder 1. A plurality of tire bolt mounting holes 201 are provided on the rim mounting flange 2. The support cylinder 1 is provided with a brake disc connection end 20 fixedly connected to the brake disc. The end face of the brake disc connection end 20 is provided with an axially protruding limit ring 202 and a plurality of spaced limit blocks 203. The inner peripheral surface of the limit blocks 203 in the radial direction is fixedly connected to the outer peripheral surface of the limit ring 202. The plurality of limit blocks 203 are circumferentially and evenly distributed around the central axis of the support cylinder 1. An installation groove 204 is provided between adjacent limit blocks 203, and a first disc body bolt mounting hole 2041 is provided at the installation groove 204.

[0034] An installation cavity is provided inside the support cylinder 1. A part of the installation cavity is used for installing a bearing assembly and a sealing assembly and for accommodating lubricating oil or grease.

[0035] When the wheel hub L of the present utility model is fixedly connected to the flat brake disc Z through the disc bolts, the connecting convex columns 301 on the flat brake disc 3 are inserted into the installation grooves 204 between the adjacent limit convex blocks 203. The limit convex ring 202 limits the flat brake disc in the radial inner side, and the limit convex blocks 203 limit the flat brake disc in the circumferential direction, cooperating with the disc bolts to fixedly connect the wheel hub L and the flat brake disc Z. The settings of the limit convex blocks 203, installation grooves 204 and limit convex ring 202 of the wheel hub L enhance the strength of the connection structure of the wheel hub L, reduce the deformation amount of the connection structure under high torsional moment, and further improve the anti-rotation ability of the connection structure when the wheel hub L is fixedly connected to the flat brake disc Z, thereby improving the reliability of the connection and preventing the wheel hub L from disengaging from the flat brake disc Z.

[0036] The support cylinder 1 includes a first cylinder 101 and a second cylinder 102. Along the axial direction of the wheel hub, the first cylinder 101 is located at the outer end of the rim mounting flange 2, and the second cylinder 102 is located at the inner end of the rim mounting flange 2. The inner end of the second cylinder 102 is the brake disc connection end 20.

[0037] A plurality of first connecting ribs 103 are fixed between one end face of the rim mounting flange 2 and the outer peripheral surface of the first cylinder 101, and a plurality of second connecting ribs 104 are fixed between the other end face of the rim mounting flange 2 and the outer peripheral surface of the second cylinder 102.

[0038] The traditional recessed parts for weight reduction are cancelled between the adjacent first connecting ribs 103 on the rim mounting flange 2, reducing the process difficulty and increasing economic benefits.

[0039] The plurality of first connecting ribs 103 are circumferentially and evenly distributed around the central axis of the support cylinder 1, and the plurality of second connecting ribs 104 are circumferentially and evenly distributed around the central axis of the support cylinder 1.

[0040] The first connecting ribs 103 and the second connecting ribs 104 are arranged in one-to-one correspondence. That is to say, the positions of the first connecting ribs 103 and the second connecting ribs 104 on both sides of the rim mounting flange 2 are symmetrical, enhancing the connection strength between the support cylinder 1 and the rim mounting flange 2 and increasing the anti-torsion and anti-tensile ability of the wheel hub.

[0041] Since the flat brake disc omits the connecting neck cylinder part compared with the traditional brake disc, to match the installation of the flat brake disc, the axial dimension of the wheel hub L of the present utility model is longer than that of the traditional wheel hub. Mainly, the axial dimension of the second cylinder 102 is longer. The part of the second cylinder 102 close to the rim mounting flange 2 is used to install bearings. As Figure 4 shown, the part of the second cylinder 102 except for the part where the bearings and seals are installed can be regarded as the connecting neck cylinder part J of the wheel hub, which is used to support and connect the flat brake disc Z, and no components are installed inside it.

[0042] On one end face of the rim mounting flange 2, a plurality of axially protruding rim retaining platforms 105 are fixed. The plurality of rim retaining platforms 105 are circumferentially evenly distributed around the central axis of the support cylinder 1. The rim retaining platform 105 is provided with an outer arc surface 1051, and the plurality of outer arc surfaces 1051 share a circumferential surface.

[0043] The number of the first connecting ribs 103 is twice the number of the rim retaining platforms 105. In this embodiment, preferably, the number of the first connecting ribs 103 is set to ten, and the number of the rim retaining platforms 105 is set to five.

[0044] One rim retaining platform 105 is correspondingly arranged for every other first connecting rib 103 in the circumferential direction. The first connecting rib 103 corresponding to the rim retaining platform 105 is connected to the inner side surface of the rim retaining platform 105.

[0045] As Figure 5 and Figure 6 shown in the wheel end assembly, it includes the above-mentioned hub L. The wheel end assembly includes a flat brake disc 3. A plurality of connecting studs 301 are arranged on the flat brake disc 3. The connecting studs 301 are matched with the mounting grooves 204 of the hub. Second disc bolt mounting holes 302 are formed in the connecting studs 301. The disc bolts fixedly connect the flat brake disc 3 and the hub through the second disc bolt mounting holes 302 and the first disc bolt mounting holes 2041. When the hub L and the flat brake disc Z are fixedly connected by the disc bolts, the connecting studs 301 on the flat brake disc 3 are inserted into the mounting grooves 204 between adjacent limiting blocks 203. The limiting ring 202 limits the flat brake disc in the radial inner side, and the limiting blocks 203 limit the flat brake disc in the circumferential direction, cooperating with the disc bolts to fixedly connect the hub L and the flat brake disc Z. It improves the anti-rotation ability of the connection structure when the hub L and the flat brake disc Z are fixedly connected, thereby improving the connection reliability and preventing the hub L and the flat brake disc Z from disengaging. The wheel end assembly with the hub L and the flat brake disc Z has a shortened overall span, reduced weight, reduced installation occupied space, and cost savings.

[0046] In summary, the hub of the present utility model is provided with a brake disc connection end. The end face of the brake disc connection end is provided with a limiting ring and limiting blocks. An installation groove is arranged between adjacent limiting blocks. The brake disc connection end with the above structure can match the installation of the flat brake disc, and has high connection reliability when connected and fixed to the flat brake disc. Therefore, the wheel end assembly with the above hub and the flat brake disc has reliable connection, shortened overall span, reduced weight, reduced installation occupied space, and cost savings, increasing economic benefits.

[0047] The technical solution of the present utility model has been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Those skilled in the art should understand that various changes made in terms of form and details fall within the protection scope defined by the claims of the present utility model.

Claims

1. A wheel hub, comprising a supporting cylinder body and a rim mounting flange located outside the supporting cylinder body, wherein a plurality of tire bolt mounting holes are formed in the rim mounting flange, and it is characterized in that: The supporting cylinder body is provided with a brake disc connection end fixedly connected to a brake disc. An axially protruding limiting convex ring and a plurality of spaced limiting convex blocks are arranged on the end face of the brake disc connection end. The inner peripheral surface of the limiting convex blocks in the radial direction is fixedly connected to the outer peripheral surface of the limiting convex ring. The plurality of limiting convex blocks are circumferentially and evenly distributed around the central axis of the supporting cylinder body. An installation groove is arranged between adjacent limiting convex blocks, and a first disc body bolt mounting hole is formed at the installation groove.

2. The hub according to claim 1, characterized in that: The supporting cylinder body includes a first cylinder body and a second cylinder body. Along the axial direction of the wheel hub, the first cylinder body is located at the outer end of the rim mounting flange, and the second cylinder body is located at the inner end of the rim mounting flange. The inner end of the second cylinder body is the brake disc connection end.

3. The hub according to claim 2, characterized in that: A plurality of first connecting ribs are fixed between one end face of the rim mounting flange and the outer peripheral surface of the first cylinder body, and a plurality of second connecting ribs are fixed between the other end face of the rim mounting flange and the outer peripheral surface of the second cylinder body.

4. The hub according to claim 3, characterized in that: The plurality of first connecting ribs are circumferentially and evenly distributed around the central axis of the supporting cylinder body, and the plurality of second connecting ribs are circumferentially and evenly distributed around the central axis of the supporting cylinder body.

5. The hub according to claim 4, characterized in that: The first connecting ribs and the second connecting ribs are arranged in one-to-one correspondence.

6. The hub according to claim 5, characterized in that: A plurality of axially protruding rim retaining platforms are fixed on one end face of the rim mounting flange. The plurality of rim retaining platforms are circumferentially and evenly distributed around the central axis of the supporting cylinder body. The rim retaining platforms are provided with outer arc surfaces, and the plurality of outer arc surfaces share a circumferential surface.

7. The hub according to claim 6, characterized in that: The number of the first connecting ribs is twice the number of the rim retaining platforms.

8. The hub according to claim 7, wherein: One rim retaining platform is correspondingly arranged for every other first connecting rib in the circumferential direction. The first connecting rib corresponding to the rim retaining platform is connected to the inner side surface of the rim retaining platform.

9. A wheel end assembly, characterized in that: A wheel hub according to any one of claims 1 to 8 is included.

10. The wheel end assembly according to claim 9, characterized in that: The wheel end assembly includes a flat brake disc. A plurality of connecting convex columns are arranged on the flat brake disc. The connecting convex columns are matched with the installation grooves of the wheel hub. Second disc body bolt mounting holes are formed in the connecting convex columns. Disc body bolts fixedly connect the flat brake disc and the wheel hub through the second disc body bolt mounting holes and the first disc body bolt mounting holes.

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