JPH03153914A - Thrust roller bearing - Google Patents

Abstract

PURPOSE: To prevent wear and prolong effective service life of a thrust roller bearing by surrounding a hold device in a fringe part in the peripheral direction with a play by a first bearing ring to move it to a collar extending in the axial direction and providing narrow guide plays at a plurality of sections in the peripheral direction between a peripheral face of the collar and a peripheral face of a second bearing ring. CONSTITUTION: A first bearing ring 3 and a second bearing ring 4 have collars 5, 6 extending in the axial direction in an outer peripheral fringe part and an inner peripheral fringe part, respectively, and the collars 5, 6 surround a hold device 2 with a play and extend in the axial direction up to a scope of the second bearing ring 4 or the first bearing ring 3. Narrow guide plays are provided at a plurality of sections in the peripheral direction of the first bearing ring 3 between a peripheral face of the collar 5 and a peripheral face of the second bearing ring 4 which face mutually, and a plurality of hold projection 7 distributed in the peripheral direction are formed on the peripheral face of the collar 5. Consequently, it is possible to prevent the hold device from coming into contact with the bearing ring at the time of operation.

Description

DETAILED DESCRIPTION OF THE INVENTION C. Industrial Application Field The present invention provides a thrust roller bearing composed of rolling elements and a retainer for holding the rolling elements, the retainers having mutually parallel planes. The cage is arranged between two thin-walled bearing rings, in particular made of thin plates, and the cage and each bearing ring are respectively assembled into one structural unit by form-fitting with each other, and at least The invention relates to a type in which the first bearing ring transitions at its circumferential edge into an axially extending collar which surrounds the retainer with play.

[Conventional technology]

A thrust roller bearing of the above type is known from United States Patent Application No. 28 91 828. However, this thrust roller bearing has a drawback in that the cage comes into contact with the bearing ring during operation. These disadvantages arise in particular when thrust roller bearings of the above type are used in transmissions of motor vehicle transmissions. In this case, in a given operating state, the so-called shaft disk is lifted axially away from the rolling elements, so that the rolling elements, which are arranged in an annular manner and are guided in a cage, are no longer under load and are pushed radially inwards. being pushed towards. These rolling elements then come into contact with the shaft or the tail of the shaft disk. Furthermore, in this case, if the so-called housing disk is not centered within the housing, it is also pushed radially inward and is supported in the cage.

Furthermore, when the shaft disc contacts the rolling elements again, the retainer is tightened. This not only prevents the thrust roller bearing from working, but also produces an undesirably loud noise.

[Problem to be solved by the invention]

An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a raceway ring that is easily constructed so that the retainer is not tightened.

[Means to solve the problem]

According to the present invention, in the thrust roller bearing of the type mentioned at the beginning, at least a plurality of circumferences are formed between the circumferential surface of the collar of the first bearing ring and the circumferential surface of the second bearing ring, which face each other. The solution is that a narrow guide play is provided at the direction location.

[Action and effect]

According to such means, the retainer can freely rotate between the two bearing rings. This is because the cage is not subjected to any force from the bearing ring. by this,
Not only is the thrust roller bearing free from wear, but the useful life of the thrust roller bearing is significantly extended.

According to the configuration of the present invention, the first bearing ring is attached to the outer peripheral edge of the second bearing ring.
The bearing rings each have axially extending flanges on their inner peripheral edges. And particularly advantageously, each collar axially supports the retainer, so that at the inner diameter or the outer diameter of each race, a narrow guide is formed between the mutually facing surfaces after assembly of these races. Play is easily formed.

Furthermore, according to the invention, a plurality of holding protrusions distributed in the circumferential direction may be provided on the peripheral surface of the collar of the first bearing ring facing the second bearing ring.

However, an annular edge may also be integrally molded on the circumferential surface of the collar of the first bearing ring facing the second bearing ring. According to such a configuration, the gap between these two bearing rings and holders are assembled in a known manner into one constructional unit. Furthermore, opposing guide portions of each race are obtained at the inner or outer circumferential surface of each race.

〔Example〕

The invention will now be explained with reference to the illustrated embodiment.

The illustrated thrust roller bearing is composed of a rolling element 1 and a cage 2 that holds the rolling element 1. Furthermore, the cage 2 is preferably made of a thin plate with planes parallel to each other.
It is provided between two thin bearing rings 3 and 4. These three components, that is, the retainer 2 and the bearing rings 3 and 4, are assembled into one component unit by being engaged with each other.

Among the above two bearing rings, the first bearing ring 3 has a
The second bearing ring 4 has axially extending flanges 5 and 6 on its inner peripheral edge, respectively. Further, each of the ribs 5 and 6 surrounds the retainer 2 with play, and extends in the axial direction up to the second bearing ring 4 or the first bearing ring 3, respectively.

According to FIG. 2, between the peripheral surface of the collar 5 of the first bearing ring 3 and the peripheral surface of the second bearing ring 4, which face each other, the first bearing ring 3
Narrow guide play is provided at a plurality of circumferential locations. Further, on the circumferential surface of the collar 5 facing the second bearing ring 4, a plurality of holding protrusions 7 distributed in the circumferential direction are formed.

In FIG. 3, the only difference is that on the peripheral surface of the collar 5 facing the second bearing ring 4, an annular edge 8 is integrally molded instead of the retaining projection 7 shown in FIG. , which is a difference between the embodiment shown in FIG. 1 and the embodiment shown in FIG.

[Brief explanation of the drawing]

The drawings show two embodiments of the thrust roller bearing according to the present invention. FIG. 1 is a partial vertical sectional view of the thrust roller bearing of the first embodiment, and FIG. FIG. 3 is a partial vertical sectional view of the thrust roller bearing of the second embodiment. 1... Rolling element, 2... Cage, 3, 4... Bearing ring, 5.6... Collar, 7... Holding protrusion, 8... Annular edge. Fig, 2

Claims (1)

[Claims] 1. A thrust roller bearing consisting of a rolling element (1) and a cage (2) that holds the rolling element (1), wherein the cage (2) is arranged in parallel planes to each other. The retainer (2) and each raceway ring (3, 4) shapely engage with each other to form one structural unit. and in which at least the first bearing ring (3) transitions at its circumferential edge into an axially extending collar (5) which surrounds the retainer (2) with play. In this case, the peripheral surface of the collar (5) of the first bearing ring (3) and the second bearing ring (3) face each other.
A thrust roller bearing characterized in that narrow guide play is provided at least at a plurality of circumferential locations between the bearing ring and the circumferential surface of the bearing ring (4). 2. The first bearing ring (3) is attached to the outer peripheral edge, and the second bearing ring (4)
has a collar (5, 6) extending in the axial direction on the inner peripheral edge, respectively.
The thrust roller bearing according to claim 1, comprising: 3. A thrust roller bearing according to claim 2, wherein each collar (5, 6) axially supports the cage (2). 4. A plurality of holding protrusions (
7). The thrust roller bearing according to any one of claims 1 to 3. 5. Any one of claims 1 to 3, wherein the annular edge (8) is integrally molded on the circumferential surface of the collar (5) of the first bearing ring (3) facing the second bearing ring (4). The thrust roller bearing described in item 1.