CN213017297U

CN213017297U - Bearing retainer, bearing, and vehicle engine

Info

Publication number: CN213017297U
Application number: CN202020793396.0U
Authority: CN
Inventors: 张山峰; 姜文进; 马李; 刘爽; 于雪梅; 邵杰; 王丹丹; 孙百重
Original assignee: Zhejiang Yili Auto Parts Co ltd; Zhejiang Geely Holding Group Co Ltd
Current assignee: Zhejiang Yili Auto Parts Co ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-04-20
Anticipated expiration: 2030-05-13

Abstract

The utility model provides a holder for bearing relates to bearing technical field. The bearing retainer comprises a retainer body, a rolling element bearing hole and an elastic element, wherein the retainer body is annular and is provided with a first end face and a second end face which are oppositely arranged along the axial direction of the retainer body; the rolling element bearing holes are used for accommodating bearing rolling elements of the bearing, and the rolling element bearing holes are distributed at intervals along the circumferential direction of the retainer body; a plurality of elastic pieces are arranged on the first end face and the second end face. The utility model provides a striking between its and the sealed lid of bearing can be cushioned to the holder for the bearing, avoids the holder for the bearing fracture to appear, simple structure, and the security is high, and the good reliability, and then the assurance has its bearing and automobile-used engine's security and reliability.

Description

Bearing retainer, bearing, and vehicle engine

Technical Field

The utility model relates to a vehicle engine field particularly, relates to a holder, bearing and vehicle engine for bearing.

Background

The transmission gear train of the present automobile engine can be roughly divided into two systems of rubber belt transmission and silent chain transmission, wherein the rubber belt transmission is more common in the automobile engine, and the rubber belt transmission system has the characteristics of large power and high transmission efficiency. The tensioner is an important functional component of a belt drive system, and the most basic movement in a rubber belt drive system is rotation after pressing the belt, and this supporting rotation is borne by a bearing in the tensioner. When an automobile engine runs at a high speed, a bearing in the tensioner is subjected to large vibration acceleration, bearing rolling elements on the bearing collide with a retainer of the bearing under the influence of the vibration, and then the retainer collides with a sealing cover of the bearing. When the engine runs at high rotating speed and high vibration for a long time, stress concentration occurs on the retainer, and finally the problems of retainer fracture, rolling piece clamping stagnation and bearing failure are caused.

Therefore, it is required to design a retainer for a bearing, and an engine for a vehicle, which have high reliability and high safety.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a bearing is with holder, bearing and automobile-used engine, this bearing is with the striking between the sealed lid that can cushion it and the bearing of holder, avoids the bearing to appear splitting with the holder, simple structure, and the security is high, and the good reliability, and then the assurance has its bearing and automobile-used engine's security and reliability.

The utility model provides a holder for bearing for the bearing of automobile-used engine, include: the retainer comprises a retainer body, a first connecting piece and a second connecting piece, wherein the retainer body is annular and provided with a first end surface and a second end surface which are oppositely arranged along the axial direction of the retainer body; the rolling element bearing holes are used for accommodating bearing rolling elements of the bearing, and the rolling element bearing holes are distributed at intervals along the circumferential direction of the retainer body; and the first end face and the second end face are both provided with a plurality of elastic pieces.

Further, the bearing retainer is integrally formed, and the elastic member is spherical.

Further, the elastic piece is a hydrogenated nitrile rubber elastic piece.

Further, a plurality of the rolling element bearing holes are arranged at equal intervals along the circumferential direction of the retainer body.

Further, the rolling element bearing holes and the elastic elements are arranged in a staggered mode along the circumferential direction of the retainer body.

Further, the number of the elastic members on the first end face is the same as the number of the elastic members on the second end face.

Further, a plurality of the elastic members are respectively projected along the first end surface and the second end surface in a direction away from the first end surface and the second end surface.

Adopt above-mentioned technical scheme, the bearing holder on be provided with a plurality of rolling member bearing holes that are used for holding the bearing rolling member along the circumference distribution of holder main part in its holder main part, can keep the bearing rolling member steadily on the bearing holder, can prevent rocking of bearing rolling member, and can prevent effectively that centrifugal force from arousing deformation, bearing rolling member drop. The first end face and the second end face which are oppositely arranged along the axial direction of the retainer body are respectively provided with a plurality of elastic pieces, and the elastic pieces can buffer the impact between the bearing retainer and the sealing cover of the bearing, so that the risk of the bearing retainer breaking is reduced. Simultaneously the utility model discloses a holder for bearing simple structure, the production assembly of being convenient for, low in manufacturing cost.

Based on the same utility model concept, the utility model also provides a bearing, include: the bearing rolling part is arranged in a rolling part bearing hole of the bearing retainer, the sealing covers are arranged outside the first end face and the second end face, and the sealing covers are abutted to the elastic part.

Further, the bearing further comprises an inner ring provided with a radially inner raceway and an outer ring provided with a radially outer raceway, the bearing rolling elements being radially interposed between the outer raceway and the inner raceway.

Adopt above-mentioned technical scheme, the bearing in the sealed lid elastic contact of holder for the bearing and bearing for there is the pretightning force in the sealed lid of bearing after being connected with the holder for the bearing, improved the leakproofness that has the bearing of holder for the bearing, reduced the risk that grease was revealed in the bearing, improved life, security and the reliability of bearing.

Based on the same utility model concept, the utility model also provides a vehicle engine, include as before the bearing.

Adopt above-mentioned technical scheme, the utility model discloses an automobile-used engine is the same with the advantage that above-mentioned bearing has for prior art, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a bearing retainer according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a bearing retainer according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a bearing according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

description of reference numerals:

1-a cage for bearings;

11-cage body, 111-first end face, 112-second end face;

12-rolling element bearing holes;

13-an elastic member;

2-bearing rolling elements;

3-inner ring, 31-inner raceway;

4-outer ring, 41-outer raceway;

5-sealing cover.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 4, a bearing retainer 1 according to the present invention includes a retainer body 11, rolling element receiving holes 12, and an elastic member 13. The holder body 11 has an annular shape, the holder body 11 has a first end surface 111 and a second end surface 112 which are oppositely arranged along an axial direction of the holder body 11, and a plurality of elastic members 13 are provided on both the first end surface 111 and the second end surface 112. A plurality of rolling element bearing holes 12 are provided at intervals in the circumferential direction of the cage main body 11 on the cage main body 11, and the rolling element bearing holes 12 are used to accommodate the bearing rolling elements 2 of the bearing.

In some embodiments of the present invention, as shown in fig. 1, the rolling element bearing holes 12 are provided at an end position of the holder body 11 biased toward the first end surface 111 along a circumferential direction of the holder body 11. It is understood that the rolling element bearing holes 12 may also be provided at an end position of the cage body 11, which is biased toward the second end face 112, along the circumferential direction of the cage body 11.

In some embodiments of the present invention, as shown in fig. 2, the rolling element bearing holes 12 are provided at a middle position between the first end surface 111 and the second end surface 112 of the holder main body 11 along the circumferential direction of the holder main body 11.

In some embodiments of the present invention, as shown in fig. 1 and 2, the bearing retainer 1 is integrally formed. The cage body 11 may be integrally molded by using injection molding, the cage body 11 may be made of a plastic material, and the plurality of rolling element bearing holes 12 are formed in the cage body 11 during the injection molding. However, this is not always necessary, and in other embodiments of the present invention, the holder body 11 of the bearing holder 1 may be formed by splicing two crown-shaped brackets, one end of each crown-shaped bracket is provided with a plurality of annular holes, and one end of each of the two crown-shaped brackets provided with the annular holes is fixedly connected to form the holder body 11 with a plurality of rolling element bearing holes 12 in an annular shape. The form of the fixed butt joint may be a bonding manner such as adhesion, welding or other friction bonding, which is not listed here.

The plurality of elastic members 13 provided on the first end surface 111 and the second end surface 112 are spherical. As shown in fig. 1 and 2, the elastic member 13 is formed in a hemispherical shape. It is understood that the shape of the elastic member 13 may be other shapes such as a trapezoidal cube or a rectangular cube. When the bearing retainer 1 impacts the sealing cover 5 on the bearing under the influence of external force, because of the existence of the elastic part 13, the sealing cover 5 can be contacted with the elastic part 13 firstly, so that the impact force between the bearing retainer 1 and the sealing cover 5 can be buffered, the direct impact of the retainer body 11 of the bearing retainer 1 on the sealing cover 5 is avoided, the soft landing of the bearing retainer 1 is realized, the phenomenon of stress concentration at the rolling part bearing holes 12 of the bearing retainer 1 is avoided, the risk of fracture of the bearing retainer 1 is reduced, and the service life, safety and reliability of the bearing retainer 1 are improved.

In some embodiments of the present invention, the plurality of elastic members 13 respectively extend and protrude along the first end surface 11 and the second end surface 112 in a direction away from the first end surface 111 and the second end surface 112. The number of the elastic members 13 on the first end surface 111 is the same as the number of the elastic members 13 on the second end surface 112, and the positions of the elastic members 13 on the first end surface 111 and the second end surface 112 are in one-to-one correspondence. As shown in fig. 1 and fig. 2, the first end surface 111 and the second end surface 112 are respectively provided with 8 elastic members 13 with one-to-one corresponding positions, so as to ensure balanced stress on the retainer body 11 of the bearing retainer 1, and further improve the operation stability and the service life of the bearing retainer 1.

The elastic member 13 is made of a material that can be made of various materials such as polymer, rubber and other elastic materials, etc. Preferably, the elastic member 13 is made of a rubber material excellent in oil resistance and heat resistance, such as hydrogenated nitrile rubber that can be well compatible with grease of a bearing. It is to be understood that the rubber material may be a rubber material having excellent oil resistance and heat resistance, such as nitrile rubber, hydrogenated nitrile rubber, acrylic rubber, and fluororubber, which are not listed here.

In some embodiments of the present invention, the rolling element bearing holes 12 are arranged at equal intervals along the circumference of the holder body 11, and the rolling element bearing holes 12 and the elastic elements 13 are arranged in a staggered manner along the circumference of the holder body 11. Further, one elastic member 13 is provided on each of the first end surface 111 and the second end surface 112 of the cage main body 11 between each two rolling member bearing holes 12, and the protruding heights of the elastic members 13 located on the same end surface are the same. In order to facilitate the manufacturing and ensure the uniform stress on the two ends of the retainer body 11, the protruding height of each elastic member 13 on the first end surface 111 and the second end surface 112 may be the same. It is understood that the heights of the elastic elements 13 on the first end surface 111 and the elastic elements 13 on the second end surface 112 may be different, and the heights of the elastic elements 13 on each end surface may not be completely the same, and may be adjusted according to the actual use requirement, and are not listed here.

Based on the above-mentioned bearing retainer 1, the utility model discloses an embodiment still provides a bearing. Referring to fig. 3 and 4, the bearing includes a bearing rolling element 2, a seal cover 5, and a bearing retainer 1 according to any of the above embodiments. The bearing rolling element 2 is arranged in the rolling element bearing hole 12 of the bearing retainer 1, the sealing covers 5 are arranged outside the first end surface 111 and the second end surface 112, and the sealing covers 5 are abutted with the elastic elements 13 arranged on the first end surface 111 and the second end surface 112. As shown in fig. 4, the bearing further comprises an inner ring 3 having a radially outer surface provided with a radially inner raceway 31, and an outer ring 4 having a radially inner surface provided with a radially outer raceway 41. The bearing rolling elements 2 are radially interposed between the outer raceway 41 and the inner raceway 31. The elastic element 13 is shown in fig. 4 close to the inner ring 3 of the bearing. It is also conceivable in other embodiments that the spring 13 is close to the outer ring 4 of the bearing, and embodiments of the bearing of the invention are not limited to the geometry of the spring 13, the rolling elements 41 and the sealing cover 5 shown in fig. 4.

Because the sealing cover 5 of the bearing is in elastic contact with the retainer 1 for the bearing through the elastic part 13, the sealing cover 5 of the bearing has pretightening force after the retainer 1 for the bearing is installed and connected, the sealing performance of the bearing is further improved, the risk of grease leakage in the bearing is reduced, and the service life, safety and reliability of the bearing are improved.

Based on above-mentioned bearing, the utility model discloses an embodiment still provides an automobile-used engine, is equipped with tensioning ware on the automobile-used engine, is equipped with above-mentioned bearing on the tensioning ware, and above-mentioned engine can be the three jar engine. The utility model discloses can provide and be suitable for the high-speed moving engine that uses in electric vehicle, hybrid vehicle to and the required high rotatory, the bearing of motor vehicle usage of engine. Compared with the prior art, the vehicle engine with the bearing has the same advantages as the bearing, and the detailed description is omitted.

Other configurations and operations of the vehicle engine according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A cage for a bearing, comprising:

a cage body (11), the cage body (11) being annular in shape, the cage body (11) having a first end face (111) and a second end face (112) that are oppositely disposed along an axial direction of the cage body (11);

rolling element bearing holes (12), wherein the rolling element bearing holes (12) are used for accommodating bearing rolling elements (2) of the bearing, and a plurality of rolling element bearing holes (12) are arranged at intervals along the circumferential direction of the retainer main body (11); and

the elastic piece (13) is arranged on each of the first end face (111) and the second end face (112) in a plurality of numbers, and the elastic pieces (13) are arranged on the first end face and the second end face.

2. The cage for a bearing according to claim 1, wherein: the retainer (1) for the bearing is integrally formed, and the elastic piece (13) is spherical.

3. The cage for a bearing according to claim 1, wherein: the elastic piece (13) is a hydrogenated nitrile rubber elastic piece.

4. The cage for a bearing according to claim 1, wherein: the rolling element bearing holes (12) are arranged at equal intervals along the circumferential direction of the retainer body (11).

5. The cage for a bearing according to claim 4, wherein: the rolling element bearing holes (12) and the elastic elements (13) are arranged in a staggered mode along the circumferential direction of the retainer body (11).

6. The cage for a bearing according to claim 5, wherein: the number of the elastic members (13) on the first end face (111) is the same as the number of the elastic members (13) on the second end face (112).

7. The cage for a bearing according to claim 6, wherein: the elastic pieces (13) are respectively protruded along the first end face (111) and the second end face (112) in a direction away from the first end face (111) and the second end face (112).

8. A bearing, comprising: the bearing retainer (1) comprises a bearing rolling element (2), a sealing cover (5) and any one of claims 1 to 7, wherein the bearing rolling element (2) is arranged in a rolling element bearing hole (12) of the bearing retainer (1), the sealing cover (5) is arranged outside the first end surface (111) and the second end surface (112), and the sealing cover (5) is abutted to the elastic element (13).

9. The bearing of claim 8, wherein: the bearing further comprises an inner ring (3) provided with a radially inner raceway (31) and an outer ring (4) provided with a radially outer raceway (41), the bearing rolling elements (2) being radially interposed between the outer raceway (41) and the inner raceway (31).

10. An engine for a vehicle, characterized in that: comprising a tensioner provided with a bearing according to claim 8 or 9.