CN216101352U

CN216101352U - Convenient, compact semi-axis fastening structure

Info

Publication number: CN216101352U
Application number: CN202122977871.7U
Authority: CN
Inventors: 纪建奕; 张伟玲; 刘宗强; 孙锡强; 于楠
Original assignee: Qingdao Auto Parts Technology Innovation Service Co ltd
Current assignee: Qingdao Auto Parts Technology Innovation Service Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-03-22
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a convenient and compact half shaft fastening structure, which relates to the field of automobile parts and comprises a hub and a half shaft, wherein the half shaft is in splined connection with the hub; the front end of the half shaft is provided with a flange, the front end of the inner side of the hub is provided with a step part, the inner diameter of the front end of the step part is larger, the inner diameter of the rear end of the step part is smaller, and the flange can abut against the step part; the front end of the hub is provided with an external thread corresponding to the hub, and the fastening end cover is in threaded connection with the hub. The torque transmission of the utility model is completed by connecting the half shaft and the hub through the spline, and the utility model has simple structure, high fastening performance, no space occupation and is suitable for popularization.

Description

Convenient, compact semi-axis fastening structure

Technical Field

The utility model relates to the field of automobile parts, in particular to a convenient and compact half shaft fastening structure.

Background

The half shafts are important power transmission members in transmitting torque output from the engine to the tires, and therefore, fastening of the half shafts requires transmission torque that is stable for the half shafts. The existing half shaft fastening mode is that a circle of (8 or 10) half shaft fastening bolts fasten the half shaft to a wheel hub (equivalent to flange connection), and the half shaft is fixed and power transmission is completed by the fastening bolts, so that the bolts are large in stress, large in mounting torque, high in loosening failure rate, large in occupied space and long in transverse length of a wheel end.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide a convenient and compact half shaft fastening structure which has the advantages of difficulty in loosening, small occupied space and reduction of the transverse length of a wheel end, and the technical purpose is realized by the following technical scheme:

a convenient and compact half shaft fastening structure comprises a hub and a half shaft, wherein the half shaft is in splined connection with the hub;

the front end of the half shaft is provided with a flange, the front end of the inner side of the hub is provided with a step part, the inner diameter of the front end of the step part is larger than that of the rear end, and the flange can abut against the step part;

the front end of the hub is provided with an external thread corresponding to the hub, and the fastening end cover is in threaded connection with the hub.

Further: the front end of the fastening end cover is provided with a convex part.

Further: the convex part is a prism with a cross section being a regular hexagon.

Further: the rear end of the fastening end cover is provided with a cavity.

Further: the cavity is cylindrical and the diameter of the cylindrical cavity is smaller than the diameter of the front end of the flange.

Further: and a mounting threaded hole is formed in the center of the front end face of the flange along the axial direction of the half shaft.

The utility model has the beneficial effects that:

1. the torque transmission is completed by the half shaft and the hub through spline connection, the structure is simple, the fastening performance is high, and the space is not occupied;

2. the fastening end cover is used for limiting the axial sliding of the half shaft on one hand, and has good sealing performance on the other hand, so that lubricating oil is prevented from leaking out;

3. the front end of the fastening end cover is provided with a convex part with a hexagonal cross section, so that the fastening end cover can be conveniently connected with a tightening machine to tighten the fastening end cover.

4. The installation screw hole is seted up to the semi-axis front end, makes things convenient for the assembly of semi-axis, especially when needs take out the semi-axis, takes out the semi-axis after the usable threaded instrument screws up.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment.

In the figure, 1, a hub; 2. a half shaft; 21. a flange; 22. installing a threaded hole; 3. fastening an end cover; 31. a projection; 32. a cavity.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in figure 1, a convenient, compact semi-axis fastening structure, including wheel hub 1 and semi-axis 2, set up the internal spline hole in the semi-axis 2, semi-axis 1 outside sets up the external splines, and both pass through splined connection, and connected mode is simple, has saved the trouble when flange joint installs among the prior art.

As shown in fig. 1, the left side of the figure is the front end, and the right side is the rear end. The front end of the half shaft 2 is provided with a flange 21, the front end of the inner side of the hub 1 is provided with a step part, the inner diameter of the front end of the step part is larger, the inner diameter of the rear end of the step part is smaller, and the flange 21 can abut against the step part and is used for preventing the half shaft 2 from sliding towards the rear end in the axial direction of the half shaft.

The wheel hub fastening structure is characterized by further comprising a fastening end cover 3 which is used for being abutted to the front end face of the half shaft 2, internal threads are arranged at the rear end of the fastening end cover 3, external threads corresponding to the external threads are arranged at the front end of the wheel hub 1, and the fastening end cover 3 is connected with the wheel hub 1 through threads. The rear end of the fastening end cover 3 is provided with a cavity 32 for reducing the dead weight thereof, and in the embodiment, for convenience of processing, the cavity 32 is cylindrical, the diameter of the cylinder is smaller than that of the front end of the flange 21, and the cavity is used for preventing the half shaft 2 from sliding towards the front end in the axial direction, so that the front end and the rear end of the half shaft 2 are limited, and the stability is high.

In order to facilitate the tightening of the fastening end cover 3, the front end of the fastening end cover 3 is provided with a convex part 31, the convex part 31 is a prism with a cross section being a regular hexagon, and is equivalent to a hexagon nut and used for being conveniently connected with a tightening machine, so that the fastening end cover 3 is more stably connected with the hub 1.

When installation semi-axis 2, because semi-axis 2 and 1 splined connection of wheel hub, only need during the installation with semi-axis 2 aim at the internal spline hole insert can, but inconvenient when taking out. Therefore, the half shaft 2 can be pulled out by screwing the half shaft into the mounting screw hole 22 with a tool having an external thread at the time of removing the half shaft 2 by opening the mounting screw hole 22 in the axial direction of the half shaft 2 at the center of the front end surface of the flange 21.

The utility model simplifies the connection mode of the half shaft 2 and the hub 1, has high fastening performance, occupies smaller space compared with the prior art, and is suitable for popularization.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A convenient, compact semi-axis fastening structure, includes wheel hub (1) and semi-axis (2), its characterized in that: the half shaft (2) is in splined connection with the hub (1);

the front end of the half shaft (2) is provided with a flange (21), the front end of the inner side of the hub (1) is provided with a step part, the inner diameter of the front end of the step part is larger than that of the rear end, and the flange (21) can abut against the step part;

the wheel hub fastening device is characterized by further comprising a fastening end cover (3) used for being abutted to the front end face of the half shaft (2), internal threads are arranged at the rear end of the fastening end cover (3), external threads corresponding to the front end of the wheel hub (1) are arranged at the front end of the wheel hub (1), and the fastening end cover (3) is in threaded connection with the wheel hub (1).

2. A handy, compact half-shaft fastening structure as set forth in claim 1, wherein: the front end of the fastening end cover (3) is provided with a convex part (31).

3. A handy, compact half-shaft fastening structure as set forth in claim 2, wherein: the convex part (31) is a prism with a regular hexagonal cross section.

4. A handy, compact half-shaft fastening structure as set forth in claim 1, wherein: the rear end of the fastening end cover (3) is provided with a cavity (32).

5. A handy, compact half-shaft fastening structure as set forth in claim 4, wherein: the cavity (32) is cylindrical, and the diameter of the cylindrical cavity (32) is smaller than that of the front end of the flange (21).

6. A handy, compact half-shaft fastening structure according to any one of claims 1 to 5, wherein: and a mounting threaded hole (22) is formed in the center of the front end face of the flange (21) along the axial direction of the half shaft (2).