CN217401469U

CN217401469U - Hub bearing with universal joint

Info

Publication number: CN217401469U
Application number: CN202220699714.6U
Authority: CN
Inventors: 胡晟
Original assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-09-09
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses a wheel hub bearing with universal joint, including outer lane, inner circle and universal joint, the cooperation has the roller between outer lane and the inner circle, the inner circle border corresponds the roller position and is provided with the retaining ring, the retaining ring is contradicted on the roller, the inner circle corresponds the retaining ring position and is formed with spacing flange, spacing flange one end is contradicted on the retaining ring, and the other end sets up with the universal joint butt, along the straight-tooth of circumference arrangement respectively on spacing flange and the universal joint butt face between them, universal joint and the intermeshing that spacing flange passes through the straight-tooth form the inner circle and is connected with universal joint's transmission. The structure is compact, the whole weight is lower, the installation precision is high, and the power transmission is stable.

Description

Hub bearing with universal joint

Technical Field

The utility model belongs to the technical field of wheel hub bearing technique and specifically relates to a wheel hub bearing with universal joint.

Background

The hub bearings of the drive wheels are typically connected to the vehicle drive element (the ball cage shaft) using pairs of internal and external splines to transmit vehicle power. The traditional connection mode is provided with a long spline, and is difficult to process and assemble. Due to machining errors or abrasion in the driving process, a gap can be formed between the driving element and the hub bearing in the vehicle running process, so that the vehicle driving element and the hub are not coaxial relative to the rotation axis, abnormal starting noise is easy to generate, and the power transmission is not smooth. Meanwhile, the national government has increasingly strict requirements on automobile emission, and due to the application of a novel high-torque turbocharged engine and a new energy automobile electric drive system, more and more automobile manufacturers urgently need a hub bearing with a compact structure, lower weight, high installation precision and stable power transmission.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a wheel hub bearing with universal joint, its compact structure, whole weight is lower to installation accuracy is high, power transmission is stable.

In order to realize the above object, the utility model provides a wheel hub bearing with universal joint, including outer lane, inner circle and universal joint, the cooperation has the roller between outer lane and the inner circle, the inner circle border corresponds the roller position and is provided with the retaining ring, the retaining ring is contradicted on the roller, the inner circle corresponds the retaining ring position and is formed spacing flange, spacing flange one end is contradicted on the retaining ring, and the other end sets up with the universal joint butt, and the straight-tooth of having arranged along circumference respectively on spacing flange and the universal joint butt face between them, universal joint forms the inner circle with the transmission of universal joint with the intermeshing of straight-tooth with spacing flange and is connected.

As the utility model discloses a further setting is formed with the tooth's socket between the adjacent straight-teeth, be formed with the tooth's socket straight-teeth between the straight-teeth adjacent, the skew gyration central line setting of nodical of straight-teeth tooth addendum extension line and tooth's socket tooth bottom extension line.

As the utility model discloses a further setting, form angle of inclination alpha 1 between straight-tooth addendum extension line and the festival plane, form angle of inclination alpha 2 between tooth 'S socket tooth bottom extension line and the festival plane, alpha 1 is more than or equal to alpha 2, the intersection of tooth' S socket tooth bottom extension line and festival plane forms first nodical, the distance of first nodical to the rotation axis is S, straight-tooth internal diameter is d, and 0.05 is less than or equal to S/d is less than or equal to 0.5.

As a further setting of the utility model, straight-tooth crest delay line highly reduces the setting from radial outside to radial inboard direction for the rotation axis, tooth's socket tank bottom delay line highly increases the setting from radial outside to radial inboard direction for the rotation axis.

As a further setting of the utility model, the straight-tooth both sides contour line intersects in the centre of gyration setting.

In the above description, the centre of rotation line refers to the axis of overall structure, and the pitch plane refers to the plane that the equal position of flute width and tooth thickness is located under same section circle diameter, and the beneficial effect that sets up like this is: through the structure, the universal joint and the inner ring are meshed through the straight teeth to form torque transmission of the universal joint and the inner ring, when the device is clamped, the straight teeth structures of the universal joint and the inner ring are firstly contacted with each other at the radial large end and contacted with each other at the small end along with the increase of clamping force, and in a clamping state, the straight teeth uniformly bear load in the whole length. When the hub bearing and the constant velocity universal joint start to clamp, the inwardly open conical gap existing between the two end teeth can be closed by deformation of the straight teeth of the universal joint or the hub bearing, the load on each straight tooth can be reduced and the tooth surface stress can be reduced. At the same time, the slight spring action of the device in the axial direction contributes to an increased torsion resistance, so that a particularly high torsion and bending stiffness is produced between the universal joint and the hub. The contour lines on two sides of the further straight teeth are intersected with each other and arranged on the rotation center line, the meshing centering effect of the tooth parts can be guaranteed, the side faces of the further straight teeth form a profile angle alpha, the included angle of the tooth surfaces perpendicular to the bottom line of the tooth groove is a normal profile angle beta, and preferably, the normal profile angle beta is set to be 36-72 degrees.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic diagram of a first distribution mode of an intersection point of a tooth top extension line of straight teeth and a pitch plane and a node of a tooth bottom extension line of tooth grooves and the pitch plane in the embodiment of the present invention;

FIG. 3 is a schematic diagram of a second distribution mode of an intersection point of a tooth top extension line of straight teeth and a pitch plane and a node of a tooth bottom extension line of tooth grooves and the pitch plane in the embodiment of the present invention;

FIG. 4 is a schematic diagram of a third distribution mode of an intersection point of an extension line of a tooth crest of a straight tooth and a pitch plane and a node of an extension line of a tooth bottom of a tooth groove and the pitch plane in the embodiment of the present invention;

FIG. 5 is a sectional view of a tooth pitch plane in an embodiment of the present invention;

fig. 6 is a cross-sectional view of a tooth profile angle according to an embodiment of the present invention;

fig. 7 is a normal profile cross-sectional view of a tooth profile in an embodiment of the present invention.

Detailed Description

The embodiment of the hub bearing with universal joint of the present invention is shown in fig. 1, fig. 5, fig. 6 and fig. 7: including outer lane 2, inner circle 1 and universal joint 3, the cooperation has roller 6 between outer lane 2 and the

inner circle

1, 1 border of inner circle corresponds roller 6 position and is provided with retaining ring 5, retaining ring 5 conflicts on roller 6, inner circle 1 corresponds retaining ring 5 position and is formed with spacing flange 11, spacing flange 11 one end is contradicted on retaining ring 5, and the other end sets up with 3 butt of universal joint, and straight-tooth 7 of having arranged along circumference respectively on spacing flange 11 and the 3 butt face of universal joint two, universal joint 3 forms inner circle 1 with the transmission of universal joint 3 through the intermeshing of straight-tooth 7 with spacing flange 11 and is connected.

In the present embodiment, a tooth space 8 is formed between adjacent straight teeth 7, and an intersection of an extension line of a tooth top of the straight teeth 7 and an extension line of a tooth bottom of the tooth space 8 is disposed to be offset from a rotation center line.

In a further configuration of the present embodiment, an inclination angle α 1 is formed between an extension line of a tooth crest of the straight tooth 7 and the pitch plane, an inclination angle α 2 is formed between an extension line of a tooth bottom of the tooth groove 8 and the pitch plane, α 1 is not less than α 2, the extension line of the tooth bottom of the tooth groove 8 and the pitch plane intersect to form a first intersection point, a distance from the first intersection point to the rotation axis is S, an inner diameter of the straight tooth 7 is d, and S/d is not less than 0.05 and not more than 0.5.

In this embodiment, the tooth crest delay line is arranged to have a height gradually decreasing from the radially outer side to the radially inner side with respect to the rotation axis, and the tooth groove 8 trough bottom delay line is arranged to have a height gradually increasing from the radially outer side to the radially inner side with respect to the rotation axis.

In a further aspect of the present embodiment, the contour lines on both sides of the straight teeth 7 intersect with each other at the center line of revolution.

The distribution of the intersection point of the tooth top extension line of the straight tooth and the pitch plane and the distribution of the tooth bottom extension line of the tooth slot and the pitch plane are as shown in fig. 2 to 4

As shown in fig. 2, the intersection point of the tooth crest extension line of the spur teeth and the pitch plane and the node of the tooth bottom extension line of the tooth groove and the pitch plane are disposed on the same side of the revolution center line.

As shown in fig. 3, the intersection point of the tooth crest extension line of the straight tooth and the pitch plane and the node of the tooth bottom extension line of the tooth groove and the pitch plane are respectively disposed on both sides of the revolution center line.

As shown in fig. 4, the intersection of the tooth crest extension line of the spur tooth and the pitch plane and the node of the tooth bottom extension line of the tooth groove and the pitch plane coincide with each other.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions within the technical scope of the present invention are all included in the protection scope of the present invention.

Claims

1. A hub bearing with universal joint, characterized in that: including outer lane, inner circle and universal joint, the cooperation has the roller between outer lane and the inner circle, the inner circle border corresponds the roller position and is provided with the retaining ring, the retaining ring is contradicted on the roller, the inner circle corresponds the retaining ring position and is formed spacing flange, spacing flange one end is contradicted on the retaining ring, and the other end sets up with the universal joint butt, and the straight-tooth of having arranged along circumference respectively on spacing flange and the universal joint butt face between them, universal joint and spacing flange pass through the intermeshing of straight-tooth and form the inner circle and be connected with universal joint's transmission.

2. The universal-joint hub bearing according to claim 1, characterized in that: a tooth groove is formed between adjacent straight teeth, and the intersection point of the tooth top extension line and the tooth bottom extension line of the straight teeth is arranged to deviate from the rotation center line.

3. The universal-joint hub bearing according to claim 2, wherein: an inclination angle alpha 1 is formed between the tooth crest extension line of the straight teeth and the pitch plane, an inclination angle alpha 2 is formed between the tooth bottom extension line of the tooth socket and the pitch plane, alpha 1 is larger than or equal to alpha 2, the tooth bottom extension line of the tooth socket and the pitch plane are intersected to form a first intersection point, the distance from the first intersection point to the rotating shaft is S, the inner diameter of the straight teeth is d, and S/d is larger than or equal to 0.05 and smaller than or equal to 0.5.

4. The hub bearing with universal joint according to claim 2 or 3, wherein: the tooth crest delay line is arranged in a manner that the height is gradually reduced from the radial outer side to the radial inner side relative to the rotating shaft, and the tooth groove bottom delay line is arranged in a manner that the height is gradually increased from the radial outer side to the radial inner side relative to the rotating shaft.

5. The universal-joint hub bearing according to claim 1, wherein: the contour lines on the two sides of the straight tooth are intersected with each other on the rotation center line.