DE8814620U1 - Rolling bearings with impulse ring for ABS systems - Google Patents

Description

SKP GmbH Schweinfurt, 1988-11-17

■ ;DUPiktoV!g* DE 88032 DB

■ ·

■ ·

•■

■ ·

Rolling bearings with impulse ring for ABS systems

The innovation concerns a rolling bearing with impulse ring for ABS systems according to the generic term of the main claim.

Rolling bearings of this type are usually used as wheel bearings or wheel bearing units in vehicles with automatic anti-lock braking. The pulse ring is provided with a large number of interruptions on its flange part, which activate a pulse sensor arranged at a small gap at a distance from it. A gap that remains constant when the bearing rotates is required in order to achieve electrical pulses of the same height during a rotation. The smallest possible gap is required in order to achieve pulses of sufficient height even at the lowest driving speed. Precise installation of the pulse ring and the pulse sensor is therefore necessary.

In a rolling bearing known from DE-OS 2 831 637, the impulse ring is simply pressed onto the shoulder surface of the bearing ring in question. This work is usually carried out by the manufacturer of the rolling bearing. During subsequent transport, installation by the vehicle manufacturer or during subsequent service work on the vehicle, the impulse ring can be exposed to shock loads, which means that the initial precise positioning can no longer be guaranteed. An impulse ring that is only slightly displaced from its position impairs the proper functioning of the entire ABS system.

The aim of the innovation is to create a rolling bearing with an impulse ring for ABS systems of the type mentioned above, in which the displacement of the impulse ring after installation due to unintentional external influences is largely excluded.

The task is solved by the fact that the impulse ring made of sheet metal is positively secured by shaped sections.

Thanks to the form-fitting fastening, the impulse ring maintains its position precisely in the event of accidental impacts, blows, pressure or the like. Concentricity, distance to the impulse sensor, etc. are therefore kept within predetermined limits. The probability that a malfunction due to assembly or installation will occur after the rolling bearing has been fitted is extremely low thanks to the innovative features. The form-fitting fastening of the impulse ring to the relevant race is possible with little effort. Other innovative features are described below using the examples shown in the drawing.

Ss seigern

Pig. 1 shows the partial longitudinal section of the race with impulse ring of a rolling bearing for ABS systems with positive fastening in the edge area,

Fig. 2 the arrangement according to Figure 1 with a different impulse ring fixed by rolling,

Fig. 3 is a partial plan view of the knurled ring groove of the race according to Figure 1 or 2 and

Fig. 4 shows the partial longitudinal section of a race in the area of the ring groove with axially extending recesses.

·

Figure 1 and Figure 2 show the shoulder area 1 of the rotating race 2 of a ball bearing with a pulse ring

This is pulled onto the shoulder 1 using a press fit and positioned accordingly. In this position, the impulse rings 3 are axially secured in a form-fitting manner by sections 4 of the sleeve-shaped area.

According to Figure 1, the race 2 has an approximately V-shaped annular groove 6 worked into the shoulder. Sections 4 of the edge zone of the sleeve-shaped area 5 distributed around the circumference are formed radially into the annular groove 6 and rest against its flanks 7. Alternatively, the entire edge can be folded over.

According to Figure 2, a semicircular profiled annular groove 6 is provided, into which the approximately middle section of the sleeve-shaped region 5 is formed by rolling.

As shown in Figure 3, one of the two edges between the groove flanks 7 and the shoulder surface 8 of the race ring 2 is provided with a large number of axially/radially extending recesses 9 by means of a circumferential knurling. Between these, residual tips 10 of the edge remain. By forming the edge zone as shown in Figure 1 or by rolling it as shown in Figure 2, the residual tips 10 are pressed into the material of the impulse ring 3 and form a positive connection in the circumferential direction.

In the design according to Figure 4, for example, five pairs of recesses 9 distributed around the circumference and inclined axially and slightly radially are provided on the edges between the groove flanks 7 and the shoulder surface 8 of the race 2. When rolling in according to Figure 2, material from the impulse ring is formed into the recesses and also results in an additional positive connection in the circumferential direction.

Claims (4)

SKF GmbH Schweinfürt, 1988-11-17 DE 88032 DE Protection claims Rolling bearings with impulse ring for ABS systems 1. Rolling bearing with a pulse ring for ABS systems placed on a surface of the rotating race, characterized in that the pulse ring (3) made of sheet metal is secured in a form-fitting manner by molded-out sections (4). 2. Rolling bearing according to claim 1, characterized in that the impulse ring (3) has an L-profile in longitudinal section and from the sleeve-shaped area (5) sections (4) distributed around the circumference are formed into an annular groove (6) machined into the material (1) of the race (2). 3. Rolling bearing according to at least one of the preceding claims, characterized in that the annular groove (6) has sections with essentially radial/axially extending recesses (9) forming a positive connection in the circumferential direction. 4. Rolling bearing according to at least one of the preceding claims, characterized in that the free edge zone of the sleeve-shaped region (5) is formed at least in sections into the annular groove (6).