Hub with adjustable eccentric hole bushing

Abstract

The utility model discloses a hub with an adjustable eccentric hole bushing, which comprises a hub body, a central hole is formed in the center of the hub part of the hub body, a plurality of bolt connecting through holes which are uniformly distributed by taking the central hole as the center are formed in the hub part around the central hole, the bolt connecting through holes are stepped through holes, and the eccentric hole bushing is arranged in the stepped through holes. The outer end is a large-diameter hole section, the inner end is a small-diameter hole section, and a middle conical transition section is formed between the inner section and the outer end; eccentric hole bushings are inserted into the corresponding bolt connecting through holes in a sleeved mode, the eccentric hole bushings are in a conical sleeve body shape, and the outer side walls of the eccentric hole bushings are tightly attached to the inner side walls of the corresponding middle conical transition sections; the hub with the PCD value being an intermediate value of two similar PCD value specifications can be manufactured, and all PCD values during installation are changed by installing the eccentric hole bushings in the corresponding threaded connection through holes, so that the hub can be converted into the hub with the two similar PCD values.

Description

Technical field:

[0001] The utility model relates to the technical field related to wheel hubs, and more specifically to a wheel hub with an adjustable eccentric hole bushing. Background technology:

[0002] The wheel products on the market are usually wheels of the same shape with a variety of PCD values ​​(i.e. the diameter of the circle formed by the central axes of all the threaded connecting holes on the hub of the wheel). Among them, PCD values ​​of φ114.3mm and φ112mm are the two most commonly used loading sizes. The PCD values ​​of these two wheel hubs are very close. When the measurement is inaccurate, they will be marked incorrectly, resulting in problems such as wrong picking later. It is difficult to distinguish them, which brings difficulties to the production and management of the wheel factory. Utility model content:

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a wheel hub with an adjustable eccentric hole bushing, which can be used to produce a wheel hub with a PCD value that is an intermediate value between two similar PCD value specifications, and by installing the eccentric hole bushing in the corresponding threaded connecting through hole, the PCD value of all installations can be changed, so that it can be converted into a wheel hub with these two similar PCD values.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A wheel hub with an adjustable eccentric hole bushing, comprising a wheel hub body, wherein a center hole is formed at the center of the hub portion of the wheel hub body, and a plurality of bolt connection through holes are formed on the hub portion around the center hole and are evenly distributed with the center hole as the center, wherein the bolt connection through hole is a stepped through hole, wherein the outer end of the bolt connection through hole is a large diameter hole section, the inner end is a small diameter hole section, and an intermediate tapered transition section is formed between the inner section and the outer end;

[0006] The eccentric hole bushing is inserted into the corresponding bolt connection through hole, the eccentric hole bushing is in a tapered sleeve shape, the eccentric hole bushing is inserted into the corresponding middle tapered transition section, and the outer side wall of the eccentric hole bushing is closely attached to the inner side wall of the corresponding middle tapered transition section;

[0007] The central axis of the middle through hole of the eccentric hole bushing is offset from the central axis of the corresponding bolt connection through hole;

[0008] The diameter of the circle formed by the central axes of the middle through hole of the eccentric hole bushing is larger than or smaller than the diameter of the circle formed by the central axes of all the threaded connected through holes. The central axes of the circle formed by the central axes of the middle through hole of the eccentric hole bushing and the circle formed by the central axes of all the threaded connected through holes coincide with each other and are both the central axes of the center hole.

[0009] The middle through hole of the eccentric hole bushing is a stepped through hole, the outer end of which is a conical hole section, and the inner end is a cylindrical hole section.

[0010] All bolt connection through holes are centered on the central axis of the center hole and have it as the front. Positioning slots extending vertically inward are formed on the left and right side walls of the middle conical transition section of each bolt connection through hole, and arc-shaped raised positioning blocks are formed on the corresponding two sides of the inner end surface of the eccentric hole bushing. The arc-shaped raised positioning blocks are inserted into the corresponding positioning slots and cooperate with the positioning slots.

[0011] The outer end outer wall of the eccentric hole bushing is formed with a radially extending raised edge, which is inserted into the large diameter hole section of the corresponding bolt connection through hole, and the inner end surface of the radially extending raised edge is pressed against or close to the inner end surface of the large diameter hole section of the corresponding bolt connection through hole.

[0012] The outstanding effects of the utility model are:

[0013] It can produce a wheel hub whose PCD value, i.e., the diameter of a circle formed by the central axes of all threaded connection holes, is an intermediate value between two similar PCD value specifications, and by installing an eccentric hole bushing in the corresponding threaded connection hole, the PCD value of all installations is changed, so that it can be converted into a wheel hub with these two similar PCD values.

[0014] Since the middle through hole of the eccentric hole bushing is an eccentric mounting through hole, its eccentric position can be changed by rotating 180 degrees, so that the diameter of the circle composed of the central axes of the middle through holes of all the eccentric hole bushings can be changed according to the position in which it is installed in the threaded connecting through hole, so that it can be larger than the diameter of the circle composed of the central axes of all the threaded connecting through holes, that is, the PCD value of the hub body, so that it becomes a hub body with a PCD value specification higher than the middle value, and it can also be smaller than the PCD value of the hub body, so that it becomes a hub body with a PCD value specification lower than the middle value, so that two hubs with similar PCD values ​​only need to uniformly produce one hub with an intermediate value, which reduces production difficulty, facilitates management, and facilitates subsequent installation. Description of the drawings:

[0015] Figure 1 It is a partial structural schematic diagram of the utility model;

[0016] Figure 2 yes Figure 1 A partial cross-sectional view of

[0017] Figure 3 yes Figure 2 A partial enlarged view of

[0018] Figure 4 yes Figure 1 AA section view;

[0019] Figure 5 It is a schematic diagram of the partial structure of the hub body;

[0020] Figure 6 It is a schematic diagram of the local structure of the eccentric hole bushing;

[0021] Figure 7 yes Figure 6 Schematic diagram of the local structure of changing angle. Specific implementation method:

[0022] For example, see Figures 1 to 7 As shown, a wheel hub with an adjustable eccentric hole bushing comprises a wheel hub body 10, wherein the wheel hub body 10 comprises a wheel rim, a hub portion 11 and five wheel spokes 13, wherein the wheel spokes 13 are V-shaped, wherein the inner end thereof is a pointed tip, the pointed tip is formed on the hub portion 11, and the two ends of the outer end thereof are formed on the wheel rim, wherein the two outer ends of the wheel spokes 13 are formed with grooves on the side away from each other to achieve weight reduction;

[0023] A center hole 111 is formed at the center of the hub 11, and five bolt connection through holes 12 are formed on the hub 11 around the center hole 111 and are evenly distributed with the center hole 111 as the center. The bolt connection through hole 12 is a stepped through hole, and its outer end is a large diameter hole section, and its inner end is a small diameter hole section. An intermediate conical transition section 121 is formed between the inner section and the outer end. The outer end of the intermediate conical transition section 121 is a large diameter hole end, which is formed with the inner end of the large diameter hole section, and the inner end of the intermediate conical transition section 121 is a small diameter hole end, which is formed with the small diameter hole section; the outer end of the intermediate conical transition section 121 has the same diameter as the large diameter hole section, and the inner end of the intermediate conical transition section 121 has the same diameter as the small diameter hole section.

[0024] Furthermore, all the bolt connection through holes 12 are centered on the central axis of the central hole 111 and have it as the front, and the left and right side walls of the middle conical transition section 121 of each bolt connection through hole 12 are formed with positioning slots 122 extending vertically inward.

[0025] Furthermore, the eccentric hole bushing 20 is inserted into the corresponding bolt connection through hole 12, the eccentric hole bushing 20 is in a tapered sleeve shape, the eccentric hole bushing 20 is inserted into the corresponding middle tapered transition section 121, and the outer side wall of the eccentric hole bushing 20 is closely attached to the inner side wall of the corresponding middle tapered transition section 121;

[0026] Furthermore, arc-shaped raised positioning blocks 21 are formed on the corresponding two sides of the inner end surface of the eccentric hole bushing 20, and the arc-shaped raised positioning blocks 21 are inserted into the corresponding positioning slots 122 and cooperate with the positioning slots 122, that is, all eccentric hole bushings 20 are distributed with the central axis of the center hole 111 as the center and with it as the front, and the left and right parts of the inner end surface of each eccentric hole bushing 20 are formed with arc-shaped raised positioning blocks 21, and the transverse center lines of the two arc-shaped raised positioning blocks 21 are on the same horizontal plane and pass through the central axis of the outer wall of the eccentric hole bushing 20.

[0027] Furthermore, the middle through hole of the eccentric hole bushing 20 is a stepped through hole, the outer end of which is a conical hole section and the inner end is a cylindrical hole section. The inner end of the conical hole section is a small diameter hole and the outer end is a large diameter hole. The inner end of the conical hole section is formed on the outer end of the cylindrical hole section.

[0028] The central axis of the middle through hole of the eccentric hole bushing 20 is offset from the central axis of the outer wall of the eccentric hole bushing 20 (that is, the central axis of the threaded connecting through hole 12). The central axis of the middle through hole of the eccentric hole bushing 20 is vertically offset forward or backward from the central axis of the outer wall of the eccentric hole bushing 20, and the two have an eccentric distance a.

[0029] Furthermore, the diameter of the circle formed by the central axes of all the central through holes of the eccentric hole bushing 20 is greater than or smaller than the diameter of the circle formed by the central axes of all the threaded through holes 12, and the central axes of the circle formed by the central axes of the central through holes of the eccentric hole bushing 20 and the circle formed by the central axes of all the threaded through holes 12 coincide with the central axis of the center hole 111.

[0030] The outer end outer wall of the eccentric hole bushing 20 is formed with a radially extending raised edge 23, which is inserted into the large diameter hole section of the corresponding bolt connection through hole 12, and the inner end surface of the radially extending raised edge 23 is pressed against or close to the inner end surface of the large diameter hole section of the corresponding bolt connection through hole 12.

[0031] In the manufacturing of this embodiment, first, a wheel hub with a PCD value (the diameter of a circle formed by the central axes of all the bolted through holes 12) of the intermediate value between two similar PCD values ​​to be produced is manufactured. For example, if two wheel hubs with PCD values ​​of φ114.3 mm and φ112 mm are required to be produced, the intermediate value is φ113 mm, and the wheel hub body 10 with a PCD value of φ113 mm is first manufactured. At the same time, the positioning slots 122 are processed at the corresponding positions of the bolted through holes 12 thereof;

[0032] Then, the corresponding eccentric hole bushing 20 is installed, wherein the central axis of the outer wall of the eccentric hole bushing 20 and the central axis of the middle through hole of the eccentric hole bushing 20 have a deviation of 0.5 mm in the front-back vertical direction, that is, the eccentric distance a is 0.5 mm;

[0033] When a wheel hub with a PCD value of φ112mm is required, the central axis of the middle through hole of the eccentric hole bushing 20 can be offset forward to one side of the central axis of the outer wall of the eccentric hole bushing 20 close to the center hole 111. At this time, the diameter of the circle formed by the central axes of the middle through holes of all eccentric hole bushings 20 is 113mm-0.5mm-0.5mm=112mm, which meets the manufacturing requirements of the wheel hub with a PCD value of φ112mm.

[0034] When a wheel hub with a PCD value of φ114.3mm is required, the center axis of the middle through hole of the eccentric hole bushing 20 can be offset forward to one side of the center axis of the outer wall of the eccentric hole bushing 20 and rotated 180° for installation, so that the center axis of the middle through hole of the eccentric hole bushing 20 is away from the center hole 111. At this time, the diameter of the circle formed by the center axes of the middle through holes of all eccentric hole bushings 20 is 113mm+0.5mm+0.5mm=114mm, plus the processing tolerance and the required clearance during installation, so that it meets the manufacturing requirements of the wheel hub with a PCD value of φ114.3mm, and can be installed and used later.

[0035] By adopting this embodiment, two wheel hubs with similar PCD values ​​only need to uniformly produce a wheel hub with an intermediate value, which reduces the difficulty of production, facilitates management, and also facilitates subsequent installation.

Claims

1. A wheel hub with an adjustable eccentric hole bushing, comprising a wheel hub body (10), wherein a center hole (111) is formed at the center of a hub portion (11) of the wheel hub body (10), and a plurality of bolt connection through holes (12) are formed on the hub portion (11) around the center hole (111) and are evenly distributed around the center hole (111), wherein: The bolt connection through hole (12) is a stepped through hole, the outer end of which is a large diameter hole section, the inner end of which is a small diameter hole section, an intermediate tapered transition section (121) is formed between the inner section and the outer end, the outer end of the intermediate tapered transition section (121) is formed with the inner end of the large diameter hole section, and the inner end of the intermediate tapered transition section (121) is formed with the small diameter hole section; The eccentric hole bushing (20) is inserted into the corresponding bolt connection through hole (12), the eccentric hole bushing (20) is in the shape of a conical sleeve, the eccentric hole bushing (20) is inserted into the corresponding middle conical transition section (121), and the outer side wall of the eccentric hole bushing (20) is closely attached to the inner side wall of the corresponding middle conical transition section (121); The central axis of the middle through hole of the eccentric hole bushing (20) is offset from the central axis of the corresponding bolt connection through hole (12); The diameter of the circle formed by the central axes of the middle through holes of all the eccentric hole bushings (20) is greater than or smaller than the diameter of the circle formed by the central axes of all the threaded through holes (12); the central axes of the circle formed by the central axes of the middle through holes of the eccentric hole bushings (20) and the circle formed by the central axes of all the threaded through holes (12) coincide with each other and are both the central axes of the center hole (111).

2. A wheel hub with an adjustable eccentric hole bushing according to claim 1, characterized in that: The outer end diameter of the middle tapered transition section (121) is a large diameter end, which is the same as the diameter of the large diameter hole section, and the inner end of the middle tapered transition section (121) is a small diameter end, which is the same as the diameter of the small diameter hole section.

3. A wheel hub with an adjustable eccentric hole bushing according to claim 1, characterized in that: The middle through hole of the eccentric hole bushing (20) is a stepped through hole, the outer end of which is a tapered hole section and the inner end is a cylindrical hole section, the inner end of the tapered hole section is a small diameter hole and the outer end is a large diameter hole, and the inner end of the tapered hole section is formed on the outer end of the cylindrical hole section.

4. A wheel hub with an adjustable eccentric hole bushing according to claim 1, characterized in that: All bolt connection through holes (12) are centered on the central axis of the center hole (111) and are located in front of the center axis. Positioning slots (122) extending vertically inward are formed on the left and right side walls of the middle conical transition section (121) of each bolt connection through hole (12). Arc-shaped protruding positioning blocks (21) are formed on the corresponding two sides of the inner end surface of the eccentric hole bushing (20). The arc-shaped protruding positioning blocks (21) are inserted into the corresponding positioning slots (122) and matched with the positioning slots (122).

5. A wheel hub with an adjustable eccentric hole bushing according to claim 4, characterized in that: The outer end outer wall of the eccentric hole bushing (20) is formed with a radially extending raised edge (23), the radially extending raised edge (23) is inserted into the large diameter hole section of the corresponding bolt connection through hole (12), and the inner end surface of the radially extending raised edge (23) is pressed against or close to the inner end surface of the large diameter hole section of the corresponding bolt connection through hole (12).

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