CN215634413U

CN215634413U - Low-friction impact-resistant bearing

Info

Publication number: CN215634413U
Application number: CN202121711035.8U
Authority: CN
Inventors: 胡晟; 胡世雄
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: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-01-25
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a low-friction impact-resistant bearing which comprises a flange inner ring and a flange outer ring sleeved on the flange inner ring, wherein a plurality of rollers and a retainer for keeping the distance between the rollers are arranged between the flange inner ring and the flange outer ring, one end of the flange inner ring is provided with a coaxial flange plate, a gap g is formed between one end of the flange outer ring facing the flange plate and the flange plate, the length of the gap g is more than 0.13mm and less than 0.3mm, and the end part of the flange outer ring facing the flange plate is also provided with a rolling part. The utility model can improve the impact resistance and reduce the noise generated by the increase of the friction force caused by impact.

Description

Low-friction impact-resistant bearing

Technical Field

The utility model relates to the technical field of bearings, in particular to a low-friction impact-resistant bearing.

Background

When a car passes through a concave pit or a convex pit on the road surface at high speed, the inner ring of the flange connected with the wheel bears impact force, and the impact force is transmitted to the steel ball component, so that the impact roller path forms an indent. The typical failure of the impact is that noise or vibration is generated when the automobile bearing runs, the driving experience of a customer is affected, and customer complaints are caused.

A common design solution is to increase the diameter or axial dimension of the bearing or the size or number of rolling elements of the bearing, which typically results in increased bearing mass and cost, and makes the bearing design less efficient in straight running and cornering capability. The shoulder height of the bearing raceway will also increase with the diameter of the ball, providing additional raceway support for the ball in extreme lateral force situations. However, this approach increases the cost of the process. All conventional improvements come at the expense of increased bearing mass, rotational torque, and cost of the bearing and components that mate with the bearing.

Therefore, in addition to basic requirements such as high load capacity, high reliability, long life, and light weight, the demand for impact resistance and high moment rigidity is also increasing. The technical problem of how to reduce the noise caused by friction during impact while improving the impact resistance is also a technical problem.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the utility model aims to provide a low-friction impact-resistant bearing, which can improve the impact resistance and reduce the noise generated by the increase of friction force caused by impact.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a low friction's shock resistance bearing, includes flange inner circle and the flange outer lane of cover on the flange inner circle, be provided with a plurality of rollers between flange inner circle and the flange outer lane and keep the holder of interval between the roller, the one end of flange inner circle has coaxial ring flange, the flange outer lane has a clearance g towards between the one end of ring flange and the ring flange, and the length of this clearance g is greater than 0.13mm and is less than 0.3mm, still be provided with rolling element on the flange outer lane towards the tip of ring flange.

As a further improvement of the utility model, the rolling parts comprise any one or combination of more of cylindrical rollers, steel balls and needle rollers.

As a further improvement of the utility model, the end part of the flange outer ring facing the flange plate is provided with a groove for assembling rolling components, and the rolling components of the groove are matched.

As a further improvement of the utility model, the groove is annularly formed at the end part of the flange outer ring along the circumferential direction.

As a further improvement of the utility model, the rolling parts are embedded in the grooves on the end face of the flange outer ring in a rolling mode.

As a further improvement of the utility model, the rolling parts are connected in the grooves in a rolling manner along the circumferential direction of the flange outer ring.

As a further development of the utility model, the number of rolling elements is a plurality and the rolling elements are mutually assembled by means of a cage.

As a further improvement of the utility model, the rolling component adopts a steel ball, a matching groove is arranged on the flange plate corresponding to the position of the steel ball, the shape of the matching groove is matched with that of the steel ball, two sides of the steel ball are respectively positioned in the matching groove and the groove, and the two sides of the steel ball, the matching groove and the groove are respectively provided with a gap h, and the length of the gap h is smaller than that of the gap g.

As a further development of the utility model, the mating groove is in the shape of a segment of a sphere.

As a further improvement of the present invention, the engagement groove is formed in an annular shape along a circumferential direction of the flange.

The utility model has the beneficial effects that:

1. the length of clearance g is less than 0.3mm, means that the distance between flange outer lane and the flange inner circle is nearer, when wheel hub received the impact, can let flange outer lane and inner circle contradict through the stroke of extremely short to can reduce substantially and transmit the impact load to the raceway, avoid the raceway to appear strikeing the brinell indentation.

2. When the length of the gap g is 0.13mm, the shoulder height of the roller can be reduced to 30% of the roller diameter, at which point the weight and material costs can be reduced considerably.

3. Through the clearance design, can adopt the roller of littleer diameter or reduce roller quantity, reduce material cost and weight while keeping high shock resistance.

4. The bearing can be applied to bearings with limited bearing size or limited bearing internal space layout, and not only can the high impact resistance be achieved, but also other performances of the bearing are not reduced.

5. Since the gap g is small, entry of debris/cement can be blocked, and some large dust can be directly blocked out without damaging the seal.

6. By the rolling members fitting, the length of the gap g can be further reduced.

7. Because the length of the gap g is very small, friction is easily generated between the flange plate and the flange outer ring, noise is generated, and the problem can be solved by utilizing the rolling parts.

Drawings

FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a third embodiment of the present invention.

Reference numerals: 1. an inner ring of the flange; 2. an outer ring of the flange; 3. a roller; 4. a holder; 5. a flange plate; 6. a gap g; 7. a rolling member; 8. a cylindrical roller; 9. a steel ball; 10. rolling needles; 11. a groove; 12. a gap h; 13. and (4) matching the groove.

Detailed Description

The utility model will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

As shown with reference to figures 1-4,

the utility model provides a low friction's shock-resistant bearing, includes flange inner race 1 and establishes flange outer lane 2 on flange inner race 1 with the cover, be provided with a plurality of rollers 3 between flange inner race 1 and the flange outer lane 2 and keep the holder 4 of interval between the roller 3, the one end of flange inner race 1 has coaxial ring flange 5, flange outer lane 2 has a clearance g6 between the one end of ring flange 5 and the ring flange 5, and the length of this clearance g6 is greater than 0.13mm and is less than 0.3mm, flange outer lane 2 still is provided with rolling component 7 on the tip of ring flange 5.

Firstly, the gap distance between the flange outer ring 2 and the flange plate 5 is reduced to 0.13 mm-0.3 mm at the gap g6, and the length of the gap g6 is smaller than 0.3mm, which means that the distance between the flange outer ring 2 and the flange inner ring 1 is relatively short, when the hub is impacted, the flange outer ring 2 and the flange inner ring can be collided through a very short stroke, at the moment, the experiment can obtain that the requirement on the shoulder height of a raceway can be reduced to be 30% -50% of the diameter of the roller 3, and the method has great advantages for reducing the cost. In particular, when the length of the gap g6 is 0.13mm, the diameter of the roller 3 can be reduced to 30% of the diameter of the roller 3, which enables a significant reduction in weight and material costs. When the corresponding gap g6 is 0.3mm, the shoulder height of the raceway is 50% of the diameter of the roller 3, and the cost can be kept low. And because the gap g6 is small, the entry of debris/cement can be blocked, and some large dust can be directly blocked without damaging the seal. Further, the length of the gap g6 can be further reduced by the engagement of the rolling members 7. When the end part of the flange outer ring 2 collides with the flange plate 5, the rolling parts 7 can be used for reducing friction, so that the noise caused by the friction is reduced, and the huge friction generated by collision is avoided to generate very large noise.

The above-mentioned alternatives for the rolling elements 7 are as follows: the rolling component 7 comprises any one or combination of a plurality of cylindrical rollers 8, steel balls 9 and needle rollers 10. The selection of the various rolling members 7 can be adapted to different conditions, and the combination of the various selections, such as the cylindrical rollers 8 cooperating with the steel balls 9, can provide various characteristics, thereby balancing the effect.

For better assembly of the rolling elements 7, the end of the flange outer ring 2 facing the flange 5 is provided with a groove 11 for assembly of the rolling elements 7, the groove 11 being adapted to the rolling elements 7.

The rolling component 7 is installed by the groove 11, the size of the selected rolling component 7 can be increased, the strength of the rolling component 7 is further improved, and the situation that the impact resistance effect is not strong due to insufficient strength caused by the fact that the size of the rolling component 7 is too small is avoided.

The grooves 11 in the above scheme can be adopted

A. The groove 11 is annularly arranged at the end part of the flange outer ring 2 along the circumferential direction.

B. The groove 11 is arranged at the end part of the flange outer ring 2 in a blind hole shape.

The rolling part 7 can roll in the groove 11 to form a raceway, friction can be greatly reduced, a thrust bearing can be formed when the flange 5 and the flange outer ring 2 collide with each other due to impact, the impact resistance effect and the friction reduction effect are improved, and noise can be reduced.

The installation relationship between the rolling member 7 and the groove 11 can be further divided into a form of rolling in place and a form of rolling in a raceway formed by the groove 11 for different rolling members 7, and the form of rolling in place can adopt a form of a needle roller 10, and the needle roller 10 can be assembled in a form of being rollably embedded in the groove 11.

Further, the rolling members 7 are plural in number and are assembled with each other by the cage 4. By assembling the plurality of rolling members 7 by the retainer 4, a stable pitch between the plurality of rolling members 7 can be ensured, and mutual impression is not generated.

As an alternative, the rolling component 7 is made of steel balls 9, a fitting groove 13 is arranged on the flange 5 at a position corresponding to the steel balls 9, the shape of the fitting groove 13 is matched with that of the steel balls 9, two sides of each steel ball 9 are respectively located in the fitting groove 13 and the corresponding groove 11, a gap h12 is formed between each two sides of each steel ball 9 and the corresponding groove 13 and the corresponding groove 11, and the length of the gap h12 is smaller than that of the gap g 6.

The steel ball 9 is mounted by matching the matching groove 13 with the groove 11, so that a better assembling effect can be generated, the operation of the steel ball 9 is more stable, the steel ball 9 can have a good rolling space through the gap h12, and the length of the gap h12 is smaller than the gap g6 in order to ensure the operation of the steel ball 9.

The cooperation is annular recess 11, and cooperation groove 13 can be selected for the segment form, is a relative pivoted relation between flange outer lane 2 and the flange dish 5, and one side of steel ball 9 is spacing, and the opposite side can normally carry out original place roll this moment in annular recess 11, can reduce the friction, and this kind of scheme can be fixed a position steel ball 9, and the dispersion of letting steel ball 9 to the impact is more even.

Of course, the matching groove 13 can also be selected to be annular and can be matched with the annular groove 11 to enable the steel balls 9 to roll in the raceway, the situation that the steel balls 9 are stacked mutually is easily caused by the scheme, the problem of uneven impact dispersion is caused, the problem can be solved by configuring the retainer 4, and the friction force can be further reduced by the matching rolling mode of the two slideways.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a low friction's shock resistance bearing, includes flange inner circle and the flange outer lane of cover on the flange inner circle, be provided with a plurality of rollers between flange inner circle and the flange outer lane and keep the holder of interval between the roller, its characterized in that, the one end of flange inner circle has coaxial ring flange, the flange outer lane has a clearance g towards between the one end of ring flange and the ring flange, and the length of this clearance g is greater than 0.13mm and is less than 0.3mm, still be provided with rolling part on the flange outer lane towards the tip of ring flange.

2. The low-friction, impact-resistant bearing of claim 1 wherein said rolling elements comprise any one or a combination of cylindrical rollers, steel balls, needle rollers.

3. A low-friction, impact-resistant bearing according to claim 1 or 2, wherein the end of the flange outer ring facing the flange is provided with grooves for fitting rolling elements, the grooves being adapted to the rolling elements.

4. The low-friction, impact-resistant bearing of claim 3 wherein said groove is circumferentially annular in the end of the flange outer race.

5. The low-friction, anti-impact bearing according to claim 3, wherein said rolling elements are roll-embedded in grooves in the end face of the flange outer ring.

6. The low-friction, anti-impact bearing according to claim 4, wherein said rolling members are connected in grooves rolling in the circumferential direction of the flange outer ring.

7. The low-friction, anti-impact bearing according to claim 1, wherein the rolling elements are plural in number and are assembled with each other by a cage.

8. The low-friction impact-resistant bearing according to claim 4, wherein the rolling member is a steel ball, the flange plate is provided with a matching groove corresponding to the steel ball, the matching groove is matched with the steel ball in shape, two sides of the steel ball are respectively located in the matching groove and the groove, and the two sides of the steel ball, the matching groove and the groove are provided with a gap h, and the length of the gap h is smaller than that of the gap g.

9. The low friction, impact resistant bearing of claim 8 wherein said mating grooves are in the form of segments.

10. The low-friction, impact-resistant bearing of claim 8 wherein said mating grooves are annular in shape and open circumferentially along said flange.