FR2575247A1 - BEARING BEARING, ESPECIALLY BEARING BEARING - Google Patents

Abstract

THE INVENTION RELATES TO A BALL BEARING BEARING, INCLUDING AN INNER RING 1, AN EXTERIOR RING 2, BEARING PARTS SUCH AS BALLS 3 AND A CAGE 4 WITH A T-CROSS SECTION TO AVOID A RISK OF DAMAGE TO THE BALLS. BEARING PARTS WHEN ASSEMBLING WITH THE PRESS, IT IS PROVIDED THAT: A. THE CAGE 4 HAS A CENTRAL PART 5 WHICH PROJECTS, IN WHOLE OR IN PART, OUTWARDS BEYOND THE FRONT FACES OF THE BUSHINGS 1, 2 ; B. THIS CENTRAL PART HAS TWO WINGS 5, 5 WHICH, IN THE SERVICE POSITION, EACH HAVE A SURFACE IN OPPOSITION WITH ONE OF THE TWO RINGS; C. THE CLEARANCE 6 BETWEEN THE WINGS 5, 5 AND THE RINGS 1, 2, IN THE SERVICE POSITION IS SMALLER THAN THE AXIAL CLEARANCE 7 BETWEEN THE BEARING PARTS 3 AND THE BOTTOM 4 OF THE BALL HOUSINGS PROVIDED IN THE CAGE.

Description

The present invention relates to a rolling bearing, in particular

  ball bearing comprising an inner ring, an outer ring,

  such as balls and a cross-section cage

dirty in T.

  The utility model DE-Gm 1913 905 describes a

  to bind of this type, and more precisely a radial groove ball bearing, in which the cage has a T-section

  for sealing purposes on one side. The tightness is ob-

  held by the fact that the wings of the central part of the

  cage penetrate into lateral grooves of the two rings.

  There is a problem for mounting such a bearing:

  for reasons of simplicity, the bearing must be

  in one piece, with the inner and outer rings

  eure, to a larger diameter. This results in difficulties because the front faces of the inner and outer rings

  can only be executed with an adjustment such as

  a mounting force does not act on the balls, which

  leads to an increase in the cost price. In the streets

  classic events, there is a great danger that the

  are damaged during assembly, which may lead to

out of service of the bearing.

  The object of the invention is to provide a rolling bearing of the type indicated above and which is improved in

  so that a lack of adjustment of the front faces of

  interior and exterior doors would not lead to seeing the damaged balls when the bearing is

  space on the tree and in housing, water

  still being preserved, and a protection of the frontal

  the rings against corrosion being obtained in addition

  is lying. To obtain this result, it is provided according to the invention that:

  a) the cage has a central part which makes

  bound in whole or in part outwards beyond the front faces of the rings; (b) this central part bears two wings which, in

  position of service, each have a surface oppo-

sition with one of the two rings;

  (c) the clearance between the wings and the rings, in

  of service, is smaller than the axial clearance between

  bearing parts and the bottom of the ball housing pre-

seen in the cage.

  Preferably the cage has on the outer face

  of its central part / a median annular projection.

  Advantageously the wings extend to the maximum

  up to the diameter of the outer face of the outer ring

  re and bore the inner ring.

  It is preferred that the cage be made of plastic. Because the T-section cage protrudes outwardly or partially beyond the end faces of the rings, and faces them by its wings over a relatively large area, large mounting forces can be employed. - These are transmitted

  to both rings through the wings. The advisors

  misalignment of rings are eliminated

  due to the elasticity of the cage material, preferably

  a plastic material. Even for food defects

  important parts, such as

  balls, are not solicited, because the game between the

  rings and rings is always smaller than the game axi

  al between these rolling parts and the bottom of the cage.

  As the rolling parts have play in their box

  There is a thin slot in the service position between the wings of the T-section cage and the faces

  rings, which constitutes, at the level of each

  than a ring, a labyrinth type seal having the characteristics

desired characteristics.

  According to the preferred modality, the forces of

  are applied through the median annular projection of the central part of the cage, which

  improves the distribution of these forces because the wings can

  wind flex independently depending on their load.

  The sealing effect is further improved if,

  In the advantageous mode indicated above, the wings extend to the outer face of the outer ring.

  and up to the bore surface of the inner ring.

  Thus, with the housing on the one hand and the shaft on the other hand an extension at right angles to the slot of the labyrinth seal and provides complete protection of

  the front surface of the two rings.

  The invention will now be explained in more detail with the aid of the single figure, which is a cross sectional view of a radial groove ball bearing.

  with a comb-shaped cage, described as an example

non-limiting ple.

  The coating comprises an inner ring 1,

  an outer ring 2, a set of balls 3 and a cover

  4-section T-section. In the service position, the

  the 5 'and 5 "of the central part 5 of the cage 4 cover

  the front faces of rings 1 and 2 with a

ble game 6.

  An annular projection 8 is provided on the face

  outer part of the central part 5 of the cage 4. If

  this on this projection a mounting force according to the arrow.

  Che 9, the game 6 is canceled, because the game 7 between the balls 3 and the bottom 4 'of the housing of the balls provided in the cage is larger than the game 6. The balls 3 are therefore not solicited under any circumstances for mounting forces. The latter are, on the contrary, transmitted directly by

  the wings 5 ', 5 "to the rings 1 and 2, as it is desirable

  - corn. The misalignment of the rings is compensated by the elasticity of the wings 5 ', 5 ".This effect is still

  increased if the cage 4 is plastic.

Claims (4)

  1. Roller bearing, in particular ball-bearing, comprising an inner ring (1), an outer ring (2), rolling parts such as balls (3) and a cage (4) with a cross-section T, characterized in that:   a) the cage / has a central part (5) which makes   fully or partly outwardly beyond the end faces of the rings (1, 2); b) this central part has two wings (5 ', 5 ")   who, in the service position, each have a surface   this in opposition to one of the two rings; c) the clearance (6) between the wings (5 ', 5 ") and the rings (1, 2), in the operating position, is smaller than the axial clearance (7) between the rolling parts (3) and the   bottom (4 ') of the ball housings provided in the cage.   Bearing according to Claim 1, characterized in that the cage (4) has, on the outer face of   its central part (5) has a median annular projection (8).   3. Bearing according to one of claims 1 or   2, characterized in that the flanges (5 ', 5 ") extend at most up to the diameter of the outer face of the ring   outer (2) and the bore of the inner ring (1).   Bearing according to one of Claims 1 to 3,   characterized in that the cage (4) is made of plastic than.