FR2795466A1 - LOCKING DEVICE FOR A BEARING RING, PARTICULARLY FOR A RING OF A ROLLING BEARING - Google Patents

Abstract

The invention relates to a device for locking in the axial direction the ring (1) of a bearing (2), in particular of a rolling bearing, relative to a bearing housing (3) or a shaft, to by means of a locking element (4), the locking element (4) engaging in complementary shapes in recesses (5, 6) in the bearing ring (1) and in the bearing housing (3) or the tree. In order to achieve simple assembly and at the same time a secure locking of the bearing ring in the axial direction, the locking element (4) is designed as a ring and its segments (7, 7 ') which engage in the recesses. (5, 6) are divided into several elements which are distributed around the periphery of the fixing element (4).

Description

Locking device for a bearing ring, in particular for a

ring of a rolling bearing

  The invention relates to an immobilization or blocking device.

  cage in the axial direction of the ring of a bearing, in particular of the ring of a rolling bearing, with respect to a bearing body or a shaft by means of a locking element, the locking element engaging with complementary shapes in the recesses provided in the bearing ring as well as in the bearing housing or in the shaft. A device of the type indicated in the introduction, for immobilizing in the axial direction a ring of a rolling bearing, is known from

  German patent application DE-OS 15 10 920. In this, an ele

  deformable blocking element engages by a segment in an improved groove

  swam in the outer ring of a rolling bearing. By another seg-

  ment, the locking element engages in a groove provided in the bearing body. The outer ring of the bearing being adjusted with play in its

  housing, we obtain in this way an axial blocking of the outer ring

  the bearing in relation to the bearing body.

  The blocking element according to the prior art for immobilizing the bearing, most often, only allows to transmit axial forces

  low to medium. It is not enough in many cases. Problems

  my can arise, when the remaining space is insufficient to allow

  be the engagement of the locking ring simultaneously in the two grooves

  ges - in the outer bearing ring and in the bearing housing. The ring

  can get stuck, which makes mounting expensive and complicated.

  Thus, the object of the present invention is to improve the dis-

  known positive for blocking the ring of a bearing in the axial direction, in order to allow the installation without difficulty of the element

  blocking and still obtain a secure blocking in the axial direction.

  The blocking element must be capable of being inserted without excessive effort into the relevant recesses in the bearing ring and in the bearing housing. The ring must also be sufficiently held to avoid any axial displacement.

  This object is achieved in accordance with the invention by the fact that the element

  blocking ment is shaped as a ring and that the segments thereof which engage in the recesses are divided into several distributed elements

  around the perimeter of the locking element.

  Unlike the state of the art, it is intended, in accordance with

  ment to the invention, that the locking element comprises peri-

  individual spheres, which can be inserted individually in the

  recesses in the bearing ring or bearing housing. This reduces the tra-

  mounting vail, jamming of the locking ring not occurring

  not as easily as in the prior art.

  According to an improvement of the invention, it is planned to carry out

  at least the segments of the blocking element made of a hard, deformed material

  table, preferably of a thermoplastic or a thermally

  curable. The mentioned material is particularly well suited on the one hand to achieve a relatively light and easy assembly, and on the other hand

  part to ensure sufficient blocking of the bearing in the axial direction.

  It is particularly advantageous that at least two consecutive segments of the locking element, in the peripheral direction, are shaped so that the first segment engages only in the bearing ring and that the second consecutive segment engages only in the bearing housing or in the shaft. It can be expected

  in particular that the blocking element comprises an even number of segments

  elements which engage alternately only in the rings of

  bearing and only in the body or in the shaft.

  This latter embodiment makes it possible to obtain even more advantageous mounting conditions, since the segments concerned at the periphery of the locking ring alternately penetrate into the groove

  in the bearing ring and in the groove in the bearing housing or the shaft.

  A jamming of the blocking element during installation is almost

  ment excluded, while simultaneously a sufficient blocking effect against

  any axial movement of the bearing ring is ensured.

  Examples of embodiment of the device according to the invention are shown in the drawings. These show: Figure 1, a section of a bearing and a bearing body which are held relative to each other by means of a locking element, Figure 2, in top view , a blocking element whose segments engage alternately in recesses provided in the bearing ring and alternately in recesses provided in the bearing body, FIG. 3, the ring 1 of FIG. 2, in a sectional view along line AA (see FIG. 2) and finally, FIG. 4, a view corresponding to FIG. 1 of the ring according to FIG. 2 or of FIG. 3,

  FIG. 1 shows a part of a bearing 2 which is not shown

  smells in more detail, moreover, namely a part of the outer ring 1 of a bearing. The ring is mounted with clearance in a bearing body 3, in

  which said ring must be immobilized in the axial direction. In a sys-

  bearing frame of this type, the forces transmitted in the axial direction do not

  are not very high; it is essentially to block an outer ring

  higher of a free bearing against any displacement in the axial direction,

  during operation. For this, a blocking element 4 is provided.

  This is made of a plastic (thermoplastic) molded by

  an injection molding process and has an essential conformation-

  annular. In the outer region of the ring are provided segments 7 and 7 'which have a greater thickness compared to

  to the rest of the ring. These segments, in the assembled state, penetrate into an evi-

  dement 5 in the form of a groove provided in the bearing ring and simultaneously in a recess 6 in the form of a groove provided in the bearing body. The grooves 5 and 6 do not necessarily have to be located opposite one another; they can also be located at points mutually

  distant. By this engagement with complementary forms of seg-

  ments 7 and 7 'in the recesses 5 and 6, the ring 1 can no longer move axially relative to the bearing body 3. The segments 7 and 7', due to

  the resistance of the plastic, constitute a blocking element.

  For mounting, insert the locking element 4 in the direction

  tion of the arrow, after having correctly positioned the ring 1 and the body 3. Since at least the segments 7 and 7 'of the locking element

  are made of a hard but deformable material, these are compressible

  bles and can thus cross the projection 8 on the bearing ring and the projection 9 on the bearing body and snap into the recesses 5 in the bearing ring and 6 in the bearing body. This ratcheting effect ensures the

  blocking of the ring 1 relative to the body 3 in the axial direction.

  In accordance with the invention - this however does not appear on the

  Figure 1 - the locking element 4 is shaped so that the seg-

  elements 7 and 7 'do not form a homogeneous, continuous whole over the

  of the locking element 4, but are divided into independent segments

  dants. This is clearly visible in Figure 2. The locking element 4 here comprises eight segments 7 and 7 ', which engage in corresponding recesses 5 and 6. Thanks to the formation of segments 7 and 7 ′ around the periphery of the locking element 4, the fixed aim of the invention is achieved, namely a simpler mounting. The different segments are orientable, as part of the elasticity with which they are mounted on the blocking element

  4, which prevents jamming of the locking element.

  As can also be seen in Figures 2 and 3, the seg-

  ments 7 and 7 'are arranged alternately so that they act either "inward direction" or "inward direction". The segments 7 are arranged so that they act only towards the outside, that is to say in the recess 5 in the bearing body. Conversely, the segments 7 'act inward direction,

  that is to say, they engage in the recesses 5 of the bearing ring.

  This situation is clearly shown in Figure 4, which shows the element of

  blocking 4 in sectional view along line A-A.

  Figure 4 shows the shape of the locking element 4 according to Figures 2 and 3, in the assembled state. In the upper part of Figure 4 we see that the segment 7 engages on the outside, in the recess 6 in the body

  landing; in the other direction, that is to say in the direction of the hollow

  ment 5 in the bearing ring, the locking element 4 is free, hence a particularly simple assembly. On the other hand, in the lower part of FIG. 4, it can be seen that the segment 7 ′ of the locking element 4 penetrates

  in the groove-shaped recess 5 arranged in the bearing ring.

  In this case also, there is a play in the other direction (in direction-

  throat 6 in the body), so that mounting can take place

without difficulties.

  The proposed solution makes it possible to mount the blocking element without difficulty, no excessively high effort having to be applied for its installation. Despite this, the blocking in the axial direction of the

  outer ring of the bearing in relation to the bearing housing is sufficient.

  The locking element 4 may - although this is not shown in the drawings - also include sealing elements for the

  level 2 and thus to a certain extent have a double function.

Claims (4)

  1. Device for locking in the axial direction the ring (1) of a bearing (2), in particular of a rolling bearing, with respect to a   bearing housing (3) or to a shaft, using a locking element (4), the element   blocking ment (4) engaging with complementary shapes in recesses (5, 6) in the bearing ring (1) and in the bearing body (3) or the shaft, characterized in that the blocking element (4) is shaped as a ring and its segments (7,7 ') which engage in the recesses (5, 6) are divided into several elements which are arranged on the periphery of the fixing element (4).   2. Device according to claim 1, characterized in that at least the segments (7, 7) of the fixing element (4) are made in   a hard, deformable material, preferably a thermoplastic material   that or a thermosetting material.   3. Device according to claim 1 or 2, characterized in that at least two segments (7, 7) of the fixing element (4) consecutive   in the peripheral direction, are shaped so that the first   mier segment (7) penetrates only in the bearing ring (1) and the seg-   next step (7) penetrates only in the bearing housing (3) or in the shaft. 4. Device according to claim 3, characterized in that the locking element (4) comprises an even number of segments (7, 7 ') which alternately penetrate exclusively into the bearing ring (1) or   exclusively in the bearing housing (3) or the shaft.