CN213138385U

CN213138385U - Hub anti-loosening system

Info

Publication number: CN213138385U
Application number: CN202020897195.5U
Authority: CN
Inventors: 刘志新; 翟道理; 袁正; 刘海林; 刘兵
Original assignee: Anhui Heli Co Ltd
Current assignee: Anhui Heli Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-05-07
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a hub anti-loosening system, which comprises a hub shell and a positioning piece assembled on the hub shell; the positioning piece is a double-head shaft body, the shaft body at one end of the positioning piece penetrates through the thickness of the hub shell and is connected with the brake drum, the shaft body at the other end of the positioning piece is connected with the rim, and an eccentric plate which is eccentrically arranged with the axis of the shaft body is formed in the middle of the double-head shaft body; the hub shell is characterized in that the assembling surface of the hub shell is provided with a positioning hole used for being connected with the positioning piece, and the positioning hole comprises a through hole matched with the shaft diameter of the double-head shaft body and an eccentric counter bore matched with the size of the eccentric plate. The utility model adopts a brand-new positioning piece and a structure of the improved hub shell corresponding to the positioning piece through design, thereby providing a new hub anti-loosening system which effectively prevents the problems of circumferential movement and axial movement of the positioning piece and avoids the loosening of the nut; meanwhile, the positioning piece is easy to process, and the use cost is reduced.

Description

Hub anti-loosening system

Technical Field

The utility model relates to a wheel hub assembly technical field specifically is a wheel hub locking system.

Background

The existing wheel hub is generally implemented by adopting stud bolts to connect the wheel hub shell with a brake drum and a wheel rim, and the stud bolts generally have the following problems:

firstly, the method comprises the following steps: the stud is of a shaft body structure, a positioning plate is formed in the middle of the stud, and the positioning plate and the shaft body are coaxially arranged, so that the stud is loosened due to vibration of the structure and the like in the braking or bumping process of a vehicle, and the problem of loosening of a connecting structure can be caused after long-term use;

II, secondly: the stud is also provided with a conical protruding part to increase the contact surface and improve the effect of connecting friction force, but the structure has high processing difficulty and high use cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking system of hub to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a hub anti-loose system comprises a hub shell and a positioning piece assembled on the hub shell;

the positioning piece is a double-head shaft body, the shaft body at one end of the positioning piece penetrates through the thickness of the hub shell and is connected with the brake drum, the shaft body at the other end of the positioning piece is connected with the rim, and an eccentric plate which is eccentrically arranged with the axis of the shaft body is formed in the middle of the double-head shaft body;

the assembly face of wheel hub casing is offered and is used for connecting the locating hole of setting element, this locating hole are including the through-hole of adaptation double-end axis body diameter of axle and the eccentric counter bore of adaptation eccentric plate size of a dimension, eccentric counter bore is seted up and is formed the port department at the through-hole on the assembly face of the wheel hub casing that is close to rim one side, eccentric counter bore and the axle center eccentric settings of through-hole.

The assembling surface of the hub shell is uniformly provided with a plurality of positioning holes along the circumferential direction of the axis of the assembling surface, the axis of the hub shell, the axis of the through hole and the axis of the eccentric counter bore are all located on the same radial line, and the axis of the through hole is located on the outermost side.

The double-end shaft body is including forming at the axis body one of eccentric plate one side and forming at the axis body two of eccentric plate opposite side, the coaxial setting of axis body one and axis body two, just all be formed with the flank of thread on axis body one and the axis body two.

The second shaft body is of a stepped shaft structure, the surface of the second shaft body close to one end of the eccentric plate is smoothly arranged, and a threaded surface is formed on the surface of the second shaft body far away from one end of the eccentric plate.

The eccentric plate is set to be a circular plate structure, and the size of the eccentric counter bore is the same as that of the eccentric plate.

The end faces of the two sides of the eccentric plate are both of a plane structure.

According to the technical scheme, the utility model adopts a brand-new positioning piece and a structure of the improved hub shell corresponding to the positioning piece through design, thereby providing a new hub anti-loosening system which effectively prevents the problems of circumferential movement and axial movement of the positioning piece and avoids the loosening of the nut; simultaneously the setting element is workable, and use cost reduces, and specific beneficial effect is as follows:

firstly, the method comprises the following steps: the optimized structure of the eccentric plate effectively solves the problems of circumferential rotation and axial movement of the positioning piece caused by shaking, bumping and shaking of the vehicle through the arrangement of the eccentric structure, and avoids the loosening of the nut;

II, secondly: the positioning piece does not need to be processed with a structure with a conical convex part, and the arrangement of the eccentric plate is combined, so that the circumferential movement and the axial movement of the positioning piece are effectively prevented through the eccentric plate, and the increase of the friction force is realized without adopting the structure with the conical convex part; after giving up this kind of structure, through the eccentric counter bore of the face laminating of eccentric slab, the same effect that has played the increase contact surface to its processing degree of difficulty has effectually been reduced, has further practiced thrift the manufacturing cost of enterprise.

Drawings

FIG. 1 is a schematic structural view of a hub shell assembly surface of the present invention;

FIG. 2 is a front view of the positioning member of the present invention;

FIG. 3 is a left side view of the positioning member of the present invention;

FIG. 4 is a schematic view of a prior art stud construction;

fig. 5 is a schematic view of the assembly structure of the present invention.

In the figure: the wheel hub comprises a hub shell 1, a positioning piece 2, an eccentric plate 21, a first shaft body 22, a first 221 thread surface, a second shaft body 23, a 231 smooth surface, a second 232 thread surface, a 3 through hole, a 4 eccentric counter bore, a 5 stud bolt, a 51 positioning plate, a 52 conical bulge, a first nut 6, a 7 brake drum, a second nut 8 and a 9 wheel rim.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

to effectively help understand the differences and improvements between the present application and the prior art, the following description is made for the structure in the prior art:

as shown in fig. 4, in the prior art, the stud bolt 5 is used to perform positioning connection on the hub shell 1, the brake drum 7 and the rim 9, one end of the stud bolt 5 penetrates through the hub shell 1 and is fixed with the brake drum 7 through the first nut 6, the other end penetrates through the rim 9 and is fixed through the second nut 8, it should be noted that the positioning plate 51 used in the conventional structure is coaxially arranged with the shaft body, and the conical protruding portion 52 is processed on one side of the positioning plate 51, the conical protruding portion 52 is used to be embedded into the conical hole matched with the rim 9 and increase the contact area with the conical hole, so as to achieve a certain degree of anti-loose effect by increasing friction force, and the structure used in the prior art has the following problems:

firstly, the method comprises the following steps: after the positioning plate 51 is embedded into the hub shell 1 and assembled, the positioning plate and the shaft body are coaxially arranged, so that the double-headed nut 5 is easy to generate the possibility of axial movement and circumferential rotation in the process of violent bumping and shaking of the vehicle body, the first nut 6 and the second nut 8 connected with the double-headed nut are loosened, and the stability after connection is reduced;

II, secondly: although the contact area between the adopted conical convex part 52 and the conical hole of the rim 9 can be effectively improved, the processing difficulty is high, and the production cost is high;

in order to solve the technical problem, the novel positioning piece 2 structure is adopted to replace the stud bolt 5 in the prior art, and the novel positioning hole in the hub shell 1 is designed according to the structural adaptability of the positioning piece 2, so that a hub anti-loosening system is formed.

As shown in fig. 1-3 and 5, the hub locking system improves the positioning hole of the assembling surface of the hub shell 1 and the positioning element 2 which is designed to match the positioning hole and has an eccentric structure, so that the structure of the hub shell 1, the brake drum 7 and the rim 9 after assembly connection is more stable, the problem of looseness of the positioning element 2 after assembly is effectively prevented, and the specific improved structure is as follows:

as shown in fig. 2, the positioning element 2 is a double-headed shaft body, and an eccentric plate 21 that is eccentric to the axis of the shaft body is formed between the double-headed shaft bodies, specifically, the shaft bodies disposed on both sides are a first shaft body 22 and a second shaft body 23, the first shaft body 22 is used for assembling and fixing the outer side surface of the rim 9 through a second nut 8, and after the second shaft body 23 is assembled to the positioning hole, the end part of the second shaft body is used for fixedly connecting the hub shell 1 and the brake drum 7 through a first nut 6. Compared with the prior art, the positioning piece 2 adopted by the scheme has the most outstanding advantages that the circumferential rotation of the positioning piece along the self shaft body is effectively prevented through the structural use of the eccentric plate 21, so that the possibility of looseness after the positioning piece is connected with the first nut 6 and the second nut 8 is prevented, the possibility of axial movement of the positioning piece 2 along the self shaft body is further prevented, and the problem of unstable structural connection in the use process is solved; the principle of use of the positioning element 2 in the hub positioning system is explained in detail below in connection with the arrangement of the positioning holes.

As shown in fig. 1, a positioning hole for connecting a positioning element 2 is formed in an assembly surface of a hub shell 1, the positioning hole includes two hole-type structures, namely a through hole 3 penetrating through the thickness of the hub shell 1 and an eccentric counterbore 4 arranged on one side close to a rim 9, the eccentric counterbore 4 is arranged at a port of the through hole 3 and is eccentrically arranged with an axis of the through hole 3; meanwhile, the through hole 3 is matched with the shaft diameter of the second shaft body 23, and the eccentric counter bore 4 is matched with the size of the eccentric plate 21, so that the positioning piece 2 is inserted into the through hole 3 through the second shaft body 23 and is positioned and connected in the eccentric counter bore 4 through the eccentric plate 21, and the positioning piece 2 cannot axially move and circumferentially rotate along the shaft body after being connected to the positioning hole through the arrangement of the eccentric counter bore 4; it should be further noted that, in the specific implementation and assembly process, since the second shaft body 23 needs to penetrate through the thickness of the hub shell 1 and the brake drum 7 and implement the threaded connection with the first nut 6, and the first shaft body 22 needs to penetrate through the thickness of the rim 9 and implement the threaded connection with the second nut 8, the length of the positioning element 2 used needs to be greater than the sum of the thicknesses of the hub shell 1, the brake drum 7 and the rim 9 after assembly; simultaneously, the problem that the present case needs key solution lies in how effectual preventing the not hard up of setting element 2, should not hard up can be understood as nut one 6 and the second 23 of axis body is connected and appears becoming flexible, owing to adopted eccentric structure setting, makes setting element 2 unable rotation, consequently very big reduction the not hard up possibility of nut.

Compared with the traditional structure, the positioning piece 2 adopted by the embodiment also has the following outstanding characteristics;

firstly, the method comprises the following steps: the optimized structure of the eccentric plate 21 effectively solves the problems of axial float and circumferential rotation of the positioning piece 2 caused by bumping and shaking of the vehicle through the arrangement of the eccentric structure, thereby avoiding the loosening of the nut and improving the stability of the system after connection;

II, secondly: the positioning element 2 does not need to be processed with a structure with a conical convex part 52, and by combining the arrangement of the eccentric plate 21 described in the embodiment, the axial movement and circumferential rotation of the positioning element 2 are effectively prevented by the eccentric plate 21, so that the friction force is increased without adopting a structure similar to the conical convex part 52; after giving up this kind of structure, through eccentric counter bore 4 of the face laminating of eccentric plate 21, the same effect that has played the increase contact surface to its processing degree of difficulty has effectually been reduced, has further practiced thrift the manufacturing cost of enterprise.

Further, the circumference equipartition in its axle center is followed to the assembly face of wheel hub casing 1 has a plurality of locating holes, the axle center of wheel hub casing 1, the axle center of through-hole 3 and the axle center of eccentric counter bore 4 all are located same radial line, and the axle center of through-hole 3 is located the outside, and this kind of setting can guarantee that setting element 2 is implementing fixed back, and each setting element 2 atress is balanced, further improves its structural stability, and the assembly standard is more unified simultaneously.

Further, the double-end shaft body comprises a first shaft body 22 formed on one side of the eccentric plate 21 and a second shaft body 23 formed on the other side of the eccentric plate 21, the first shaft body 22 and the second shaft body 23 are coaxially arranged, and thread surfaces for implementing fixed connection are formed on the first shaft body 22 and the second shaft body 23, specifically, the first thread surface 221 is formed on the outer circumferential surface of the first shaft body 22 and is used for implementing positioning connection on the rim 9; the second shaft body 23 is of a stepped shaft structure, the surface of the shaft body close to one end of the eccentric plate 21 is smooth, the outer circumferential surface of the shaft body is a smooth surface 231, and the axial length of the smooth surface 231 is equal to the sum of the thicknesses of the hub shell 1 and the brake drum 7 after being attached and positioned; a second thread surface 232 is formed on the surface of the shaft body at one end far away from the eccentric plate 21, and the second thread surface 232 is in threaded connection with a first nut 6 after extending from the end surface of the brake drum 7; when the positioning piece 2 is used for positioning specifically, the second shaft body 23 is inserted into the positioning hole, the eccentric plate 21 is connected into the eccentric counterbore 4 through the key groove, the end part of the shaft body extends out of the brake drum 7 and then is connected with the first nut 6 through the second thread surface 232 to fix the brake drum 7, and then the first thread surface 22 is connected and fixed with the rim 9.

Further, the eccentric plate 21 is set to be a circular plate structure, the size of the eccentric counter bore 4 is the same as that of the eccentric plate 21, the circular plate structure is beneficial to processing, and the forming effect is good.

Furthermore, the end faces of the two sides of the eccentric plate 21 are both set to be of a plane structure, the eccentric plate 21 is beneficial to processing and forming, the contact area of the eccentric plate in the eccentric counter bore 4 can be further increased due to the arrangement of the plane structure, and the production efficiency and the assembling reliability are improved.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. A hub anti-loosening system, comprising: the hub anti-loosening system comprises a hub shell and a positioning piece assembled on the hub shell;

2. A hub anti-loosening system as claimed in claim 1, wherein: the assembling surface of the hub shell is uniformly provided with a plurality of positioning holes along the circumferential direction of the axis of the assembling surface, the axis of the hub shell, the axis of the through hole and the axis of the eccentric counter bore are all located on the same radial line, and the axis of the through hole is located on the outermost side.

3. A hub anti-loosening system as claimed in claim 1, wherein: the double-end shaft body is including forming at the axis body one of eccentric plate one side and forming at the axis body two of eccentric plate opposite side, the coaxial setting of axis body one and axis body two, just all be formed with the flank of thread on axis body one and the axis body two.

4. A hub anti-loosening system as claimed in claim 3, wherein: the second shaft body is of a stepped shaft structure, the surface of the second shaft body close to one end of the eccentric plate is smoothly arranged, and a threaded surface is formed on the surface of the second shaft body far away from one end of the eccentric plate.

5. A hub anti-loosening system as claimed in claim 1, wherein: the eccentric plate is set to be a circular plate structure, and the size of the eccentric counter bore is the same as that of the eccentric plate.

6. A hub anti-loosening system as claimed in claim 1, wherein: the end faces of the two sides of the eccentric plate are both of a plane structure.