FR2697597A1 - Bearing comprising a pulse generation ring for anti-lock systems of vehicle wheels. - Google Patents

Abstract

The invention relates to a bearing for anti-lock braking systems of the wheels of a vehicle comprising a pulse generating ring 3 which is mounted on a surface 1 of the rotating ring 2 of the bearing. The ring 2 is made of a deformable material and is immobilized by complementarity, shapes in the axial direction and in rotation by deformations of the material penetrating into a suitable annular groove 6 machined in the surface 1 of the ring 2 of the bearing. The annular groove 6 extends in the peripheral direction and its width varies alternately and / or its depth varies alternately by sector.

Description

Bearing comprising a pulse generation ring for systems

  The invention relates to a bearing comprising a ring for generating pulses for anti-lock systems for the wheels of a vehicle, also called ABS systems, which ring is

  mounted on a surface of the rotating ring of the bearing, is reali-

  sée in deformable material and is immobilized by complementary shapes, in the axial direction and in rotation, by deformations of the

  material entering suitable grooves in the bearing ring.

  Bearings of this type are most often used

  wheel bearing or as a set of wheel bearings on vehicles fitted with an automatic system preventing blocking

  wheels during braking The pulse generation ring, at the

  calf of its flange part, is provided with a relative number-

  important discontinuities that activate a pulse sensor

  arranged at a distance with a small air gap A constant space is born

  stopped when the wheel turns to produce electrical impulses

  ques of equal value on a revolution Space must also be reduced

  as possible to produce pulses with a sufficient height

  even at very low speeds This is why mounting

  cis of pulse generator ring and pulse sensor

is essential.

  In a bearing disclosed in document DE-GM 8 814 620, the pulse generation ring is pressed against the front surface of the corresponding ring of the bearing and is immobilized in the axial direction by deformation of the material in the groove

  the bearing ring The pulse generation ring is

  born in rotation by transverse cavities in the sides of the groove

  Although there is nothing wrong with the reliability of mounting the known pulse generation ring, simpler machining is

desirable.

  The object of the present invention is to provide a ring

  pulse generation for ABS systems of the type indicated in

  production which can be carried out at low cost and with which a

  setting of the pulse generation ring after mounting due to

  unforeseen external actions is largely excluded.

  The problem is solved by means of a groove machined in the

  surface of the bearing ring which extends in the peripheral direction

  and whose width varies alternately by sector and / or the pro-

  cross-country skier alternates by sector.

  By alternately varying the width and / or depth

  deur of the groove, partial surfaces are obtained in the peripheral direction which constitute a connection by complementarity of shapes with the material repelled from the pulse generation ring It is the same with the groove with alternative undulations It suffices to

  deform the material of the pulse generation ring directly

  tion of the throat at a few points distributed around the perimeter to obtain

  provide sufficient braking in rotation.

  lettering the entire circumference of the print generation ring

  drives or fold or push back parts of the edge Grooves of the type according to the invention can be easily machined by means of a tool working by removing chips, for example a disc grinding wheel, driven in an oscillating movement, axial and / or radial to the bearing ring Often this can be done when

  of a machining operation of the bearing ring This machining sim-

  folded significantly reduces overall costs

  brication Other characteristics of the invention are described below.

  after using examples shown in the drawings These represent

  tent: Figure 1, a partial longitudinal section of the bearing ring with the pulse generation ring of a bearing for ABS braking system, with fixing by complementarity of shapes in the edge region and an annular groove of width and of variable depth, figure 2, the arrangement according to figure 1, with as a variant

  fixing the pulse generation ring in an annular groove

  wavy surface in the axial direction.

  Figures 1 and 2 show the shoulder area of a bat-

  gue 2 rotating of a ball bearing with a generation ring

  number of pulses 3 The latter is threaded and positioned with

  tight on the shoulder surface 1 In this position, the

  3 pulse generation gues are axially fixed by complement

  mentarity of shapes by segments 4 of the shaped part of man-

dear.

  In accordance with FIG. 1, the ring 2 of the bearing presents

  te, machined in its shoulder surface 1, an annular groove 6 to pro-

  substantially V-shaped wire Segments 4 of the edge area of part 5

  sleeve-shaped distributed around the circumference are repelled ra-

  dialing in the annular groove 6 The annular groove 6 is machined

  with a depth and a width that varies over the entire circle

  conference This is done for example using a disc wheel

  V-profile which is moved radially in synchronism with the vi-

  rotation of the ring 2 of the bearing By pushing the material of the pulse generation ring 3, a connection is obtained by complementarity of shapes in the axial direction and in the tangential direction. In accordance with FIG. 2, an annular groove 7 with a semi-circular profile is provided in which the middle part of the sleeve-shaped part 5 is pushed back by knurling. The annular groove 7 has a constant width in the peripheral direction and is wavy

  in the axial direction In this case also we obtain after mole-

  braking in the axial direction and braking in rotation.

Claims (2)

  1 bearing comprising a pulse generation ring   sion for anti-lock wheel systems which is mounted on a surface of the rotating ring of the bearing, is made of deformable material and is immobilized by complementary shapes in the axial direction and in rotation by deformations of the material entering adapted grooves of the bearing ring, characterized by a groove (6) machined in the surface of the bearing ring which   extends in the peripheral direction and whose width varies alternately   by sector and / or the depth varies alternately by sec- teurs.   2 Bearing comprising a pulse generation ring   sion for anti-lock braking systems which is mounted on a surface of the rotating ring of the bearing, is made of deformable material and is immobilized by complementary shapes in the   axial and rotating direction by deformations of the penetrated material   trant in suitable grooves of the bearing ring, characterized by a groove (7) machined in the surface of the ring (2) of the bearing   which extends in the peripheral direction and is wavy in the direction axial tion