CN213676236U

CN213676236U - Hub unit with spline fit structure

Info

Publication number: CN213676236U
Application number: CN202022143942.9U
Authority: CN
Inventors: 沈韬; 施文良; 金小波
Original assignee: Zhejiang Jinsai Precision Technology Co ltd
Current assignee: Zhejiang jinshai Precision Technology Co.,Ltd.
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-07-13
Anticipated expiration: 2030-09-25

Abstract

The utility model provides a wheel hub unit with spline fit structure, including wheel hub body and integral key shaft, the wheel hub body is including the outer circle body and the inner circle body that each other overlaps and inlays, still set firmly short inner circle on the inner circle body, form the rotation through a plurality of tapered roller between the outer circle body and the short inner circle and connect, the both ends of annular gap are sealed shutoff between the outer circle body and the inner circle body, the through-hole is seted up at the center of inner circle body, the one end of inner circle body sets firmly the ring flange, the through-hole link up the ring flange, the internal perisporium of the through-hole other end has the spline groove, the both ends of integral key shaft all set up the spline end, one of which spline end inserts the through-hole and forms interference fit with the spline groove, another spline end. This wheel hub unit with spline cooperation structure has following advantage: the direct transmission assembly of the spline shafts at the two ends is adopted, so that a plurality of parts are saved, the cost is reduced, the reliability, the stability and the accuracy of transmission are ensured, the service life of a product is effectively prolonged, and the safety of a vehicle is improved.

Description

Hub unit with spline fit structure

Technical Field

The utility model belongs to the technical field of machinery, a wheel hub unit is related to, especially a wheel hub unit with spline fit structure.

Background

In the automotive construction, the hub unit functions to connect the transmission structure with the wheel. Therefore, the requirements on the transmission reliability and the precision of the automobile are extremely strict, and meanwhile, the hub unit is guaranteed to have a longer service life, so that the safe running of the automobile can be guaranteed.

The existing automobile hub unit is generally matched with the unit through a ball cage, a nut locking structure is adopted, the ball cage is connected with an automobile half shaft, and therefore too many parts are arranged in the matched structure, failure is easily caused, safety accidents are caused, and the cost of accessories is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided one kind and set up the spline with the axis body both ends, lug connection wheel hub and car transmission structural connection ensure the wheel hub unit that has spline fit structure of transmission validity.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a wheel hub unit with spline fit structure, includes wheel hub body and integral key shaft, the wheel hub body is including the outer circle body and the inner circle body that inlay each other, still set firmly low inner circle on the inner circle body, form the rotation through a plurality of tapered roller between outer circle body and the short inner circle and connect, the both ends of annular gap between outer circle body and the inner circle body are sealed shutoff, the through-hole is seted up at the center of inner circle body, the one end of inner circle body sets firmly the ring flange, the through-hole link up the ring flange, the internal perisporium of the through-hole other end has the spline groove, the both ends of integral key shaft all set up the spline end, and its one spline end inserts the through-hole with the spline groove forms interference fit, and another spline end is direct to be pegged graft with car transmission structure.

This wheel hub unit with spline fit structure all forms the spline assembly through axis body both ends, and direct connection wheel hub unit and car transmission system compare traditional structure and save accessories such as semi-axis, ball cage and nut, simplify connection structure, guarantee transmission effect.

In the hub unit with the spline fit structure, one end of an annular gap between the outer ring body and the inner ring body blocks the ear sealing piece, the outer periphery of the ear sealing piece is covered with a protective cover, and the protective cover is fixedly sleeved on the outer ring body.

In the hub unit with the spline fit structure, the magnetic component is blocked by the other end of the annular gap between the outer ring body and the short inner ring, an end cover is covered on the outer side of the magnetic component, and the end cover is clamped on the end heads of the outer ring body and the short inner ring.

In the hub unit with the spline fit structure, a retainer is further arranged between the outer ring body and the short inner ring, and the plurality of tapered rollers are rotatably hinged on the retainer.

In the hub unit with the spline fit structure, stepped holes are formed in two ends of the through hole.

In the hub unit with the spline fit structure, the flange plate is provided with a plurality of mounting holes, and bolts penetrate through the mounting holes.

Compared with the prior art, this wheel hub unit with spline fit structure has following advantage:

the direct transmission assembly of the spline shafts at the two ends is adopted, so that a plurality of parts are saved, the cost is reduced, the reliability, the stability and the accuracy of transmission are ensured, the service life of a product is effectively prolonged, and the safety of a vehicle is improved.

Drawings

Fig. 1 is a sectional view of an assembling structure of the present hub unit having a spline fitting structure.

In the figure, 1, an outer ring body; 2. an inner ring body; 3. short inner ring; 4. a holder; 5. a tapered roller; 6. an ear seal; 7. a protective cover; 8. a magnetic component; 9. an end cap; 10. a flange plate; 11. a bolt; 12. a spline shaft; 13. a spline end.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the hub unit with the spline fit structure comprises a hub body and a spline shaft 12, wherein the hub body comprises an outer ring body 1 and an inner ring body 2 which are nested with each other, a short inner ring 3 is further fixedly sleeved on the inner ring body 2, the outer ring body 1 and the short inner ring 3 are rotatably connected through a plurality of tapered rollers 5, two ends of an annular gap between the outer ring body 1 and the inner ring body 2 are sealed and blocked, a through hole is formed in the center of the inner ring body 2, a flange plate 10 is fixedly arranged at one end of the inner ring body 2, the through hole penetrates through the flange plate 10, a spline groove is formed in the inner peripheral wall at the other end of the through hole, spline ends 13 are arranged at two ends of the spline shaft 12, one spline end 13 is inserted into the through hole to form interference fit with the spline groove, and the other.

One end of an annular gap between the outer ring body 1 and the inner ring body 2 is blocked by the ear sealing piece 6, the periphery of the ear sealing piece 6 is covered with a protective cover 7, and the protective cover 7 is fixedly sleeved on the outer ring body 1.

The other end of the annular gap between the outer ring body 1 and the short inner ring 3 blocks the magnetic component 8, the outer side of the magnetic component 8 is covered with an end cover 9, and the end cover 9 is clamped on the end heads of the outer ring body 1 and the short inner ring 3.

A retainer 4 is arranged between the outer ring body 1 and the short inner ring 3, and a plurality of tapered rollers 5 are rotatably hinged on the retainer 4.

Both ends of the through hole are provided with stepped holes.

The flange plate 10 is provided with a plurality of mounting holes, and bolts 11 penetrate through the mounting holes.

the two-end spline shaft 12 is adopted for direct transmission assembly, a plurality of parts are saved, the cost is reduced, the reliability, the stability and the accuracy of transmission are ensured, the service life of a product is effectively prolonged, and the safety of a vehicle is improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the outer ring body 1 is used more herein; an inner ring body 2; a short inner ring 3; a cage 4; a tapered roller 5; an ear seal 6; a protective cover 7; a magnetic component 8; an end cap 9; a flange plate 10; a bolt 11; a spline shaft 12; spline ends 13, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A hub unit with a spline fit structure comprises a hub body and a spline shaft and is characterized in that the hub body comprises an outer ring body and an inner ring body which are sleeved with each other, a short inner ring is fixedly sleeved on the inner ring body, the outer ring body and the short inner ring are in rotary connection through a plurality of tapered rollers, two ends of an annular gap between the outer ring body and the inner ring body are sealed and blocked, a through hole is formed in the center of the inner ring body, a flange plate is fixedly arranged at one end of the inner ring body and penetrates through the through hole, a spline groove is formed in the inner peripheral wall at the other end of the through hole, spline ends are arranged at two ends of the spline shaft, one spline end is inserted into the through hole to form interference fit with the spline groove, the other spline end is directly and fixedly connected with an automobile transmission structure in an inserting mode, and one end of the annular gap between the outer ring body and the inner ring body blocks an, the protective cover is covered on the periphery of the ear sealing element, the protective cover is fixedly sleeved on the outer ring body, the outer ring body and the other end of the annular gap of the short inner ring block the magnetic assembly, the end cover is covered on the outer side of the magnetic assembly, and the end cover is clamped on the outer ring body and the end head of the short inner ring.

2. A hub unit according to claim 1, wherein a cage is further provided between the outer ring body and the short inner ring, and a plurality of tapered rollers are rotatably hinged to the cage.

3. A hub unit having a spline-fitting structure according to claim 1, wherein both ends of the through-hole are provided with stepped holes.

4. The hub unit of claim 1, wherein the flange plate has a plurality of mounting holes, and bolts are inserted into the mounting holes.