CN219256958U - Automobile outer ball cage - Google Patents
Automobile outer ball cage Download PDFInfo
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- CN219256958U CN219256958U CN202223411070.5U CN202223411070U CN219256958U CN 219256958 U CN219256958 U CN 219256958U CN 202223411070 U CN202223411070 U CN 202223411070U CN 219256958 U CN219256958 U CN 219256958U
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- ball cage
- spline
- interference
- hub bearing
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Abstract
The utility model provides an automobile outer ball cage, wherein an output shaft arranged at the shell end of the ball cage comprises a locking threaded section for connecting a locking nut to implement locking fit, a spline shaft for transmitting torque is divided into a taper section and an interference section along the axial length direction, the torque output shaft is assembled with a hub bearing, the taper section is inserted into a spline hole of an inner ring of the hub bearing in advance, accurate and natural alignment of spline teeth and spline grooves can be smoothly realized, and the assembly effect and the meshing stability of an outer ball cage spline and an inner spline of the hub bearing are improved.
Description
Technical Field
The utility model belongs to the technical field of automobile parts, and particularly relates to an automobile outer ball cage.
Background
During the running of the automobile, if the spline straight shaft bears the impact of large torque from the engine for a long time, the torque attenuation of the outer ball cage lock nut of the driving shaft can occur. Therefore, when the design is carried out, the interference magnitude of the spline straight shaft and the hub bearing is required to be as large as possible, but if the interference magnitude is too large, the spline straight shaft and the hub bearing are difficult to assemble, and if the requirement on the production error of the spline is too high, the rejection rate of producing the outer ball cage of the drive shaft is too high.
The name of the connecting structure of a driving shaft assembly and a hub bearing (document No. CN 215096810U) discloses a driving shaft, which comprises a first shaft head and a first end surface, wherein the first end surface is fixedly connected to one end of the first shaft head, the first shaft head is provided with an external spline, and the external spline is provided with a helix angle; the inner wall of the hub bearing is provided with an internal spline, and the hub bearing is in spline connection with the driving shaft.
Above-mentioned scheme is traditional outer ball cage spline design, through drive shaft external spline and wheel hub bearing internal spline interference fit, reduces the fit clearance, but the machining precision requirement to the mating surface is higher, and the assembly is inconvenient, can't avoid the problem of spline straight shaft and wheel hub bearing assembly difficulty because spline production error leads to.
Disclosure of Invention
The utility model aims to provide an automobile outer ball cage, which improves the assembly effect and the meshing stability of an outer ball cage spline and an inner spline of a hub bearing.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an outer ball cage of car, the output shaft that ball cage casing outer end set up of ball cage is used for connecting lock nut and carries out locking cooperation, its characterized in that including locking screw section: the spline section of the output shaft is divided into a taper section and an interference section from outside to inside along the direction of the shaft core, and the large-diameter end of the taper section is connected with the outer end of the interference section in a smooth way.
According to the scheme, the spline shaft for transmitting the torque is divided into the taper section and the interference section along the shaft length direction, the torque output shaft is assembled with the hub bearing, the taper section is inserted into the spline hole of the inner ring of the hub bearing in advance, so that accurate and natural alignment of spline teeth and spline grooves can be smoothly realized, and the assembly of the output shaft and the hub bearing can be rapidly and smoothly realized.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a detailed physical diagram of the present utility model;
fig. 3 is an assembly view of the present utility model.
Detailed Description
For convenience in positioning, the direction indication of the inner end and the outer end referred to in the following description should take the two side parts of the vehicle body as reference positions for convenience in understanding, that is, the positions close to or located outside the vehicle body in the width direction are the outer side and the outer end, and the corresponding positions far from the outside or the outer side of the vehicle body are the inner end or the inner side.
As shown in the figure, an output shaft 10 arranged at the outer end of a ball cage shell 1 of the automobile outer ball cage comprises a locking threaded section 11 for being connected with a locking nut 30 to implement locking fit, a spline section 12 of the output shaft 10 is divided into a taper section 121 and an interference section 122 from outside to inside along the axial core direction, and the large diameter end of the taper section 121 is connected with the outer end of the interference section 122 in a smooth manner.
According to the scheme, the spline section 12 for transmitting torque is divided into the taper section 121 and the interference section 122 along the axial length direction, the small-diameter end of the taper section 121 is firstly utilized to insert the hub bearing, so that accurate and natural alignment of spline teeth and spline grooves can be smoothly realized, a guiding effect is provided for assembly, and then the small-diameter end is smoothly transited to the large-diameter end to finally realize interference fit with the interference section 122, so that the stability of engagement of the external ball cage spline and the internal spline of the hub bearing is ensured, and the assembly efficiency is improved while the action and effect of the spline section 12 are not influenced.
The taper section 121 extends from the inner end groove wall of the tool retracting groove at the inner end of the locking thread section 11 to the side of the interference section 122. The taper section 121 is provided from the position of the relief slot, the limited axial length of the output shaft 10 is utilized as much as possible, and the length of the interference section 122 is ensured as much as possible when the taper section 121 is provided so as to ensure that the meshing section of the interference section and the hub bearing A has enough axial length.
The interference section 122 is in interference fit with an inner spline hole on the inner ring of the hub bearing A. Therefore, frequent impact phenomenon caused by circumferential gaps between tooth walls in the rotation process can be avoided, noise can be eliminated, and moment attenuation, starting abnormal sound and premature failure of antifriction gaskets caused by the fact that spline gaps become large along with the increase of service life can be avoided.
The interference scheme of the interference section 122 with the inner splined hole on the inner race of the hub bearing a is described in detail below.
In the first scheme, the interference section 122 forms radial interference and circumferential transition fit with a spline hole on the inner ring of the hub bearing a.
In the above scheme, the interference section 122 and the inner spline hole on the inner ring of the hub bearing A form radial interference, the spline is radially extruded, and circumferential deformation ensures no circumferential gap between the tooth walls.
In the second scheme, the interference section 122 and an inner spline hole on the inner ring of the hub bearing a form circumferential interference, radial transition or clearance fit.
The interference section 122 of the scheme and the inner spline hole on the inner ring of the hub bearing A form circumferential interference fit, the spline is circumferentially extruded, and a deformation space is reserved in the radial direction.
The first and second solutions are to ensure that there is no circumferential gap between the interference section 122 and the inner spline hole on the inner ring of the hub bearing a, and the shaft core and the hole core are concentric.
The length of the taper section 121 is 1/3-1/2 of the length of the interference section 122. The taper section 121 plays a role in realizing accurate natural alignment of spline teeth and spline grooves, so that overlong setting is not suitable, and preferably the length of the taper section 121 is 1/3-1/2 of the length of the interference section 122, so that the interference section 122 can have enough axial interference fit length with the hub bearing A, the torque engaged by the outer ball cage spline and the inner spline of the hub bearing is ensured to be uniformly distributed and loaded, and torque attenuation, starting abnormal sound and premature failure of antifriction gaskets caused by the increase of spline gaps along with the increase of service life are avoided.
Claims (6)
1. The utility model provides an automobile outer ball cage, output shaft (10) that ball cage casing (1) outer end set up of ball cage is used for connecting lock nut (30) to implement locking cooperation, its characterized in that including locking screw section (11): the spline section (12) of the output shaft (10) is divided into a taper section (121) and an interference section (122) from outside to inside along the axial core direction, and the large-diameter end of the taper section (121) is connected with the outer end of the interference section (122) in a smooth way.
2. The automotive outer ball cage of claim 1, wherein: the taper section (121) extends from the inner end groove wall of the tool withdrawal groove at the inner end of the locking thread section (11) to the side where the interference section (122) is located.
3. The outer ball cage of claim 2, wherein the interference section (122) forms an interference fit with a splined hole on the inner ring of the hub bearing A.
4. The outer ball cage according to claim 1, wherein the interference section (122) forms radial interference and circumferential transition fit with a spline hole on the inner ring of the hub bearing A.
5. The outer ball cage according to claim 1, wherein the interference section (122) forms a circumferential interference, radial transition or clearance fit with an inner spline hole on the inner ring of the hub bearing A.
6. The outer ball cage according to claim 1, wherein the length of the taper section (121) is 1/3-1/2 of the length of the interference section (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223411070.5U CN219256958U (en) | 2022-12-16 | 2022-12-16 | Automobile outer ball cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223411070.5U CN219256958U (en) | 2022-12-16 | 2022-12-16 | Automobile outer ball cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219256958U true CN219256958U (en) | 2023-06-27 |
Family
ID=86858043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223411070.5U Active CN219256958U (en) | 2022-12-16 | 2022-12-16 | Automobile outer ball cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219256958U (en) |
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2022
- 2022-12-16 CN CN202223411070.5U patent/CN219256958U/en active Active
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