CN214742759U

CN214742759U - Elastic needle bearing for automobile steering column

Info

Publication number: CN214742759U
Application number: CN202023124410.7U
Authority: CN
Inventors: 顾雪明; 沈建伟; 卢华星
Original assignee: Suzhou Industrial Park Diwei Precision Bearing Co ltd
Current assignee: Suzhou Industrial Park Diwei Precision Bearing Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-11-16
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses an elastic needle bearing for an automobile steering column, which comprises a needle roller, a retainer, an elastic outer ring, a rubber outer sleeve and a framework, wherein the needle roller is arranged in the retainer, the retainer is arranged in the elastic outer ring, and the elastic outer ring is arranged in the framework and is in gapless fit with the framework; and a plurality of bulges which protrude outwards are uniformly distributed on the middle part of the circumference of the elastic outer ring. The utility model discloses the bearing inner race is the elastomer, and V type hem and adjacent kingpin formation outer lane cavity have the elastic action, and bearing under bearing great radial force condition, the elasticity of elasticity outer lane can reduce the wearing and tearing of bearing, improves bearing life.

Description

Elastic needle bearing for automobile steering column

Technical Field

The utility model relates to a bearing technical field, more specifically say, relate to an elastic needle bearing for steering column of automobile.

Background

The bearings for supporting the steering column of the automobile generally adopt ball bearings, and the rolling bodies, the inner ring and the outer ring are in rigid contact with each other by metal materials and can only bear radial force, so that the stability of the steering mechanism of the automobile is poor in the working process, and the noise is high.

Chinese patent publication No. CN203146573U discloses a rigid bearing for an automobile steering column system, which is described in paragraphs [0005] to [0006 ]: the rigid bearing is matched with the tubular column shaft and comprises an outer ring, an inner ring and a steel ball between the inner ring and the outer ring, the rigid bearing is in a negative clearance state in the axial direction and the radial direction during assembly, and the bearing design fully considers the matching of the bearing, the tubular column shell and the shaft, so that a driver can not feel loose and stuck under the working state of the steering wheel, and the steering wheel is stable and smooth in rotation and free of noise. But the rigid bearing is greatly abraded when the play state is eliminated, so that the service life of the bearing is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at increasing the stability that turns to the in-process, reducing the wearing and tearing of bearing inner race, extension bearing life.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an elastic needle bearing for an automobile steering column comprises a needle, a retainer, an elastic outer ring and a rubber outer sleeve, wherein the retainer is arranged in the elastic outer ring, and the elastic outer ring is arranged in the rubber outer sleeve and is in clearance fit with the rubber outer sleeve; and a plurality of bulges which protrude outwards are uniformly distributed on the middle part of the circumference of the elastic outer ring.

Further, the bulges are V-shaped folded edges, and gaps are formed between the rolling needles adjacent to the folded edges and the circumferential line of the elastic outer ring.

Furthermore, the elastic outer ring further comprises a framework, and the framework and the elastic outer ring are of coaxial annular structures.

Furthermore, the framework is injected into the rubber outer sleeve, and the rubber outer sleeve and the framework form an integral structure.

Further, the skeleton is equipped with a plurality of bosss, the boss protrusion and evenly distributed in the skeleton outer wall.

Furthermore, an annular groove is formed in the rubber outer sleeve, and the elastic outer ring is arranged in the groove.

Further, the holder is a plastic holder.

To sum up, the utility model discloses following beneficial effect has:

1. the V-shaped folded edge of the outer ring of the bearing and the elastic action of the cavity of the outer ring eliminate the gap between the bearing and the steering column, increase the stability and reduce the noise in the steering process under the condition that the bearing bears larger radial force, reduce the abrasion of the elastic outer ring and the roller pin and prolong the service life of the bearing.

2. The elasticity of the rubber outer sleeve is utilized, the fit clearance between the bearing and the steering column is favorably eliminated, the effects of shock absorption and energy absorption can be realized when the steering or braking is carried out, and the stability in the steering process is further improved.

3. The steering column is long and poor in hardness, and the elastic bearing outer ring is adopted, so that the assembly adaptability between the bearing and the steering column shell and the shaft is good, and the problems of poor matching precision and poor coaxiality are solved.

Drawings

Fig. 1 is a schematic view of the structure of the right side of the present invention.

Fig. 2 is a schematic view of the sectional structure of the front view of the present invention.

Fig. 3 is a schematic diagram of the outer ring structure of the present invention.

Fig. 4 is a schematic diagram of the outer ring of the present invention.

Fig. 5 is a cross-sectional view of the outer ring of the present invention.

Reference numerals: 1, rolling a needle; 2, a retainer; 3, an elastic outer ring; a 31V-shaped bulge; 32 an outer ring cavity; 4, a rubber jacket; 41 grooves; 42 an inclined surface; 43 vertical plane; 5, a framework; 51 a boss; 52 are flanged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Referring to fig. 1 and 2, the present embodiment sequentially includes a plurality of needle rollers 1, a retainer 2, an elastic outer ring 3, a rubber sleeve 4 and a framework 5 from inside to outside, the retainer 2, the outer ring 3, the rubber sleeve 4 and the framework 5 are coaxial annular structures, the elastic outer ring 3 is disposed in the rubber sleeve 4, an outer diameter of the elastic outer ring 3 is tightly attached to an inner diameter of the rubber sleeve 4, and the framework 5 is fixed in the rubber sleeve 4.

The roller pins 1 are circumferentially and uniformly arranged in the retainer 2, the retainer 2 is provided with pockets matched with the roller pins 1, the roller pins 1 are arranged in the pockets to prevent falling off, the retainer 2 is arranged in the elastic outer ring 3, the retainer 2 can rotate in the elastic outer ring 3, gaps are formed between the roller pins 1 and the pockets to enable the roller pins 1 to rotate in the pockets, and preferably, the retainer 2 is a plastic retainer.

An annular groove 41 is arranged in the rubber outer sleeve 4, and the elastic outer ring 3 is arranged in the groove 41. The elastic outer ring 3 is tightly attached to the groove 41. The elastic action of the rubber enables the rubber outer sleeve 4 to have certain elastic pretightening force, and the rubber outer sleeve 4 and the elastic outer ring 3 are in a gapless state in the working state.

The rubber casing 4 comprises two end faces, namely an inclined face 42 and a vertical face 43, wherein the vertical face 43 is perpendicular to the radial direction, and the inner edge of the inclined face 42 is inclined inwards to form an included angle, so that the rubber casing can be conveniently installed in the bearing seat, and the included angle is preferably 30 degrees with the radial direction.

The framework 5 is injected into the rubber outer sleeve 4, one end of the framework 5 is provided with a plurality of inward flanges 52, and the flanges can be wrapped on the surface of the rubber outer sleeve 4, so that the rubber outer sleeve 4 and the framework 5 are of an integral structure, and the strength in the bearing assembling process can be increased.

Preferably, the framework 5 is provided with a plurality of bosses 51 which protrude and are uniformly distributed on the outer wall of the framework 5, so that the problem of insufficient strength of the rubber jacket 4 is avoided.

Referring to fig. 3, 4 and 5, the elastic outer ring 3 is an elastic body, a plurality of protrusions protruding outward along the middle portion are uniformly distributed on the circumference of the elastic outer ring 3, and a cavity is formed between the protrusions and the needle roller 1. Preferably, the bulge is a V-shaped folded edge 31, the folded edge 31 and the needle roller 1 form a cavity so as to be capable of pressing inwards, and when the bearing inner hole is subjected to external force, the folded edge 31 and the cavity generate elastic action.

The roller pins 1 are internally tangent to the circumference line A-A of the elastic outer ring 3, the folded edge 31 protrudes out of the circumference line A-A, the folded edge 31 and the adjacent roller pin 1 form a cavity, namely, the roller pin 1 adjacent to the folded edge 31 forms a gap with the circumference line A-A, and other roller pins 1 are contacted with the circumference line A-A.

The elastic outer ring 3 is made by adopting the post heat treatment of the cold-rolled sheet special-shaped stretching vehicle bottom, thereby improving the wear resistance of the elastic outer ring 3.

When the steering column shaft is pressed into the inner hole of the needle bearing, the radial clearance between the elastic outer ring 3 and the bearing seat is eliminated under the double elastic force action of the rubber outer sleeve 5. When the automobile is subjected to external force action such as bumping or steering in the driving process, the elastic outer ring 3 is subjected to the external force action of an automobile steering column, the folded edge 31 and the cavity are extruded to generate elastic deformation, the inner surface of the folded edge 31 gradually approaches the roller pin 1, the cavity gradually becomes small, and after the external force disappears, the folded edge 31 is restored to the original shape. Therefore, the radial relative position between the steering shaft of the automobile and the bearing seat of the steering gear can elastically float in a large range, the steering gear of the automobile flexibly swings, and the stability of the automobile steering process is improved.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings, or directly or indirectly applied to the field or the related field, are included in the scope of the present invention.

Claims

1. The utility model provides an automobile steering column is with elasticity bearing of bearing, includes kingpin and holder, the kingpin is located in the holder, its characterized in that: the retainer is arranged in the elastic outer ring, and the elastic outer ring is arranged in the rubber outer sleeve and is in clearance fit with the rubber outer sleeve; and a plurality of bulges which protrude outwards are uniformly distributed on the middle part of the circumference of the elastic outer ring.

2. The elastic needle bearing for an automobile steering column according to claim 1, characterized in that: the bulges are V-shaped folded edges, and gaps are formed between the rolling needles adjacent to the folded edges and the circumferential line of the elastic outer ring.

3. The elastic needle bearing for an automobile steering column according to claim 1, characterized in that: the elastic outer ring is of a coaxial annular structure.

4. The elastic needle bearing for an automobile steering column according to claim 3, characterized in that: the framework is injected into the rubber outer sleeve, and the rubber outer sleeve and the framework are of an integral structure.

5. The elastic needle bearing for an automobile steering column according to claim 3 or 4, characterized in that: the skeleton is equipped with a plurality of bosss, boss protrusion and evenly distributed in the skeleton outer wall.

6. The elastic needle bearing for an automobile steering column according to any one of claims 1 to 3, characterized in that: an annular groove is formed in the rubber outer sleeve, and the elastic outer ring is arranged in the groove.

7. The elastic needle bearing for an automobile steering column according to claim 1, characterized in that: the retainer is a plastic retainer.