JPH0830493B2 - Thrust roller bearing - Google Patents

Abstract

The axial roller bearing consists of a race (2) containing rollers (1) and positioned between two parallel-planed, thin-walled sheet metal rotor discs (3,4) all forming one unit. The peripheral edge of one rotor disc (3) leads into an axially-pointing collar (5) gripping round the race with gap between. The collar extends to near the second rotor disc (4). Holder-lugs (7) on the periphery of the collar facing the second rotor disc are spaced out. A rim runs round the periphery of the collar facing the second rotor disc. USE/ADVANTAGE - During operation, the race can freely rotate between the rotor discs, thus reducing wear and increasing the durability of the bearing.

Description

Description: TECHNICAL FIELD The present invention has a cage for holding rolling elements, and the cage is arranged between two thin-walled races having planes parallel to each other. The cage and the two races are assembled into one component by form-fitting engagement with each other, at least one of the races at the circumferential edge of the cage. Relates to a thrust roller bearing of the type which is surrounded by a radial interval and is transitioned to a collar extending in the axial direction.

PRIOR ART Thrust roller bearings of the above type are known from US Pat. No. 2,891,828. The drawback of this thrust roller bearing is that the cage contacts the race during operation. Such drawbacks occur especially when thrust roller bearings of the type mentioned are used in converters of motor vehicle transmissions. In this case, under certain operating conditions, the so-called shaft disc is axially separated from the rolling element, so that the load exerted on the rolling element guided by the cage is removed and the cage is displaced in the radial direction. It will move inward and come into contact with the collar of the shaft or shaft disc. In this case, if the so-called casing disc is not centered in the casing, it also falls radially inward and is supported by the cage.

The retainer locks when the shaft disc is brought into contact with the rolling elements again. On the one hand, this leads to functional impairments and, on the other hand, to undesirably high noise.

OBJECT OF THE INVENTION The object of the present invention is to avoid the abovementioned drawbacks and to design the race in such a way that locking of the cage is avoided in a simple manner.

[Means for Solving the Problems] An object of the present invention is to have a retainer for holding a rolling element, the retainer being arranged between two thin-walled races provided with planes parallel to each other. The cage and the two races are assembled as one unit by form-fitting one another and one peripheral edge of at least one rolling wheel separates the cage in the radial direction. To a collar that surrounds and extends in the axial direction, the collar extending to the extent of the second race, and at least at some circumferential location, between the collar and the second race. , Of the type in which radial guide play is provided between the facing circumferential surfaces, viewed in axial section of the thrust bearing distributed circumferentially on the collar of the first bearing ring. Individual retention configured in a staircase The protrusion is provided, and when the first bearing ring and the second bearing ring are displaced relatively in the radial direction, the peripheral surface of the second rolling wheel is concentrically arranged with respect to the peripheral surface. It has been solved by the fact that both races are guided with respect to each other by the retaining projections so that they are brought into contact with the inner peripheral section of the retaining projections.

[Advantages of the Invention] With the configuration according to the present invention, since no force acts on the cage from the bearing rings, the cage can freely rotate between the bearing rings. As a result, not only is wear reduced, but the service life of such thrust roller bearings is also significantly extended.

According to one embodiment of the present invention, one raceway wheel has an outer peripheral edge portion and the other raceway wheel portion has an axially extending collar portion at the inner peripheral edge portion. In this case, it is particularly advantageous if the collars engage axially behind the retainer. Such an arrangement makes it possible in a simple manner for the guide play between the facing surfaces to be provided at the inner or outer diameter of the race, depending on the installation.

To this end, according to one embodiment of the invention, a circumferential surface of the collar facing the other bearing ring is provided with a plurality of circumferentially distributed retaining projections.

However, an annular edge portion may be integrally formed on the peripheral surface of the brim facing the other bearing ring. With this construction, both races, together with the cage between them, are connected to one component in a manner known per se,
At the same time, the races are guided to each other on the inner peripheral surface or the outer peripheral surface by the guide play.

EXAMPLES Next, the present invention will be described with reference to the illustrated examples.

The illustrated thrust roller bearing has a cage 2 that holds a rolling element 1. The cage 2 is arranged between two thin-walled races 3, 4 with planes parallel to one another, in particular between races made of sheet metal. In this case, these three components are assembled into one component by formally engaging one another.

The bearing ring 3 has an outer peripheral edge portion and the bearing ring 4 has an inner peripheral edge portion with collars 5 and 6 extending in the axial direction, respectively. The collars 5, 6 surround the cage 2 at radial intervals and extend axially to the extent of the other race 3 or 4.

According to FIG. 2, the bearing ring 3 has guide play on the circumferential surfaces of the collar 5 and the other bearing ring 4 facing each other at some circumferential positions. For this purpose, holding projections 7 distributed in the circumferential direction are provided on the peripheral surface of the collar 5 facing the other bearing ring 4.

The difference between the embodiment shown in FIG. 3 and the embodiment shown in FIGS. 1 and 2 is that an annular edge 8 is integrally formed on the peripheral surface of the collar 5 facing the other bearing ring 4. The guide play is formed by molding.

[Brief description of drawings]

The drawings show two embodiments of the thrust roller bearing according to the present invention. FIG. 1 is a partial longitudinal sectional view of the thrust roller bearing of the first embodiment, and FIG. 2 is the thrust roller of FIG. The figure which looked at the bearing from the direction of arrow II. FIG. 3 is a partial vertical sectional view of the thrust roller bearing of the second embodiment. 1 …… Rolling element, 2 …… Cage, 3,4 …… Race ring, 5,6 ……
Collar, 7 ... Retaining protrusion, 8 ... Ring edge

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-157827 (JP, A) JP-A-62-118117 (JP, A) Jikken 53-7175 (JP, Y2)

Claims (4)

[Claims] 1. A cage (2) for holding a rolling element (1), the cage (2) being provided between two thin race rings (3, 4) having planes parallel to each other. And the cage (2) and the two races (3, 4) are assembled into one component unit by mutually engaging in shape, and at least one rolling wheel is arranged. One peripheral edge of (3) transitions to an axially extending collar (5) that surrounds the cage (2) at radial intervals, and this collar (5) is the second. A radial guide play is provided which extends to the extent of the bearing ring (4) and at least at some circumferential points between the facing circumferential surfaces of the collar and the second bearing ring (4). Of the type described above, the strips distributed circumferentially on the collar (5) of the first bearing ring (3). An individual holding protrusion (7) is provided which is formed stepwise when viewed in the axial direction cross section of the strike bearing, and the first bearing ring (3) and the second bearing ring (4) are relative to each other. When it is displaced in the radial direction, the peripheral surface of the second rolling wheel (4) is brought into contact with the inner peripheral surface section of the holding projection (7) which is concentric with the peripheral surface. ,
Thrust roller bearing, characterized in that both races (3, 4) are guided with respect to each other by said retaining projections (7). 2. A first bearing ring (3) having a collar (5, 6) axially oriented on the outer peripheral edge and a second bearing ring (4) on the inner peripheral edge. The thrust roller bearing according to claim 1. 3. A collar according to claim 2, characterized in that the collars (5, 6) provided on both races (3, 4) engage axially behind the cage (2). Thrust roller bearings. 4. The collar of the first bearing ring (2), the second of the collar (5).
The thrust roller bearing according to claim 1, wherein an annular edge (8) is formed on the peripheral surface facing the bearing ring (4).