DE102011004210A1 - roller bearing - Google Patents

Abstract

The invention relates to a rolling bearing (1) with a bearing outer ring (3), a bearing inner ring (5) and a plurality of rolling bodies (9) which are arranged between the bearing outer ring (3) and the bearing inner ring (5), by means of a bearing cage (15 ) are held at predetermined distances from each other and roll on raceways (7a, 7b) of the bearing rings (3, 5), of which at least one raceway is delimited by a flange (13), the bearing cage (15) having two cage side rings (17a, 17b ) and a plurality of cage webs (19) connecting the cage side rings (17a, 17b), and in which at least one guiding and holding element (23) extends from the bearing cage (15) to the board (13) and the board (13) engages axially behind. According to the invention, at least one opening (27) is formed in one of the cage side rings (17b), in which the at least one guiding and holding element (23) is fastened. Alternatively, in the case of a roller bearing (1 '), an additional ring (33) is attached to one of the cage side rings (17b), with which the guide and holding element (23) is formed in one piece. The proposed construction avoids the risk that the guiding and holding element (23) will be damaged during the mounting of the rolling bearing (1).

Description

Field of the invention

The invention relates to a rolling bearing with a bearing outer ring, a bearing inner ring and a plurality of rolling elements, which are arranged between the bearing outer ring and the bearing inner ring, held by a bearing cage at predetermined intervals from each other and roll on raceways of the bearing rings, of which at least one career by a Board is limited, wherein the bearing cage has two cage side rings and a plurality of cage webs connecting the cage side rings, and in which extends from the bearing cage at least one guiding and holding element towards the board and engages behind the board axially.

Background of the invention

Rolling of the type discussed here are known per se. When mounting them, the problem arises that after pushing the rolling bearing bearing cage on the bearing inner ring must be taken to ensure that these components do not fall apart and the rolling elements remain in an optimal mounting position. For rolling bearings, which have only one board on the bearing inner ring to facilitate assembly, it makes sense to set the bearing cage with formed on this separate guide and holding elements with axial play on the board. For this purpose, the bearing cage is pushed together with the rolling elements on the bearing inner ring axially until the formed on an axially elongated end of the bearing cage, radially inwardly projecting elastic guide and holding elements of the bearing cage engage behind the inner ring board on its outer side wälzkörperfernen. Depending on which elastic properties have the guiding and holding elements, with their help, the employment of the rolling elements on the board and, where appropriate, their bias can be adjusted in the rolling bearing. Such a trained tapered roller bearing shows the German patent application DE 43 38 350 A1 ,

When mounting the roller bearing of the bearing cage is therefore axially carried away over the board so far, until the guiding and holding elements have reached their final position runway far behind the board. In this process, the guiding and holding elements can be unfavorably bent or damaged. If the guide and holding elements of the assembled rolling bearing are bent or damaged mounted, no proper function of the bearing is no longer possible, since the one or more guiding and holding elements touch the board during rotation of the bearing cage and drag along this adversely along.

In order to avoid the described damage to the guiding and holding elements, various constructions are known from the prior art. From the DE 34 04 200 A1 For example, a tapered roller bearing is known whose guide and holding elements are designed as separate from the bearing cage components and only after assembly of the bearing, so after the composition of the bearing outer ring, the bearing inner ring and the roller bearing bearing cage leading to a baufesten unit attached. The assembly of the bearing can then be done without problems by pushing the bearing cage on the bearing inner ring towards the board. Once the rolling elements are employed on the board in the desired manner, the guiding and holding elements are frontally connected to the bearing cage, so that the desired employment of the rolling elements is retained on the board. In order to establish the connection between the guide and retaining elements and the bearing cage, this document is disadvantageously provided only two cohesive procedures, namely the use of an adhesive and the melting and touching under pressure.

Object of the invention

The invention has for its object to provide a generic rolling bearing, in which further possibilities for connecting the guiding and holding elements and the bearing cage are realized, so that a guide and holding elements not damaging mounting of the bearing is made possible.

Summary of the invention

The starting point of the invention is a rolling bearing with a bearing outer ring, a bearing inner ring and a plurality of rolling elements, which are arranged between the bearing outer ring and the bearing inner ring, held by a bearing cage at predetermined intervals from each other and roll on raceways of the bearing rings, of which at least one career by a shelf is limited, wherein the bearing cage comprises two cage side rings and a plurality of cage webs connecting the cage side rings, and in which extends from the bearing cage at least one guiding and holding element towards the board and engages behind the board axially. The rolling bearing is inventively characterized in that in one of the cage side rings at least one opening is formed, in which the at least one guiding and retaining element is attached.

The at least one opening in the one cage side ring is radially aligned.

In the rolling bearing according to the invention, the at least one guiding and retaining element and the bearing cage are connected by positive locking. As a result, a further construction for connecting the at least one separate guide and retaining element and the bearing cage is provided. This can for example be used when other types of compound, such as the known use of adhesives or melting and touching under pressure are not applicable. This may be the case, for example, when the finished mounted rolling bearing is comparatively small and / or when it is used in a place where it is exposed to external influences that affect the longevity of the adhesive.

The rolling bearing according to the invention can also be easily and safely mounted, since the at least one guiding and holding element is not passed over the board during assembly of the rolling bearing and therefore there is no risk of damage to at least one guiding and holding element.

In a preferred embodiment, a plurality of uniformly spaced openings are formed in the one cage side ring along its circumference, in each of which a guide and holding element is attached. This arrangement of the openings and thus also the guiding and holding elements is advantageous in that it allows a uniform employment of the rolling elements on the board along the entire circumference.

The attachment of the guiding and holding elements in the opening can be made even more resistant beyond the described positive locking. Thus, another embodiment provides that the opening is a through hole into which the respective guiding and holding element is inserted radially inwardly and fixed by at least one fastening means. The fastening means may be a screw, a bolt or the like. Through the guide and retaining element and the opening therethrough, a bore is formed such that the fastening means can be inserted into the bore in order to anchor the respective guide and retaining element firmly in the opening of the cage side ring.

According to the invention, said object can also be achieved in a further way. Starting point here is a rolling bearing with a bearing outer ring, a bearing inner ring and a plurality of rolling elements, which are arranged between the bearing outer ring and the bearing inner ring, held by a bearing cage at predetermined intervals from each other and roll on raceways of the bearing rings, of which at least one career by a shelf is limited, wherein the bearing cage comprises two cage side rings and a plurality of cage webs connecting the cage side rings, and in which extends from the bearing cage at least one guiding and holding element towards the board and engages behind the board axially. The rolling bearing is inventively characterized in that on one of the cage side rings an additional ring is attached, with which the at least one guiding and holding element is integrally formed.

The connection between the guide and retaining element and the bearing cage is produced according to the invention in this further technical solution of the same object, characterized in that the additional ring is attached to one of the cage side rings of the bearing cage. This connection can be made detachable.

Accordingly, a further possibility for connecting the at least one guiding and holding element and the bearing cage is provided by the rolling bearing according to the invention. Also, this roller bearing allows a simple and at least one guide and retaining element not damaging installation, since the additional ring is mounted on the bearing cage on the front side and runway remote after mounting the rolling elements and the bearing cage on the bearing inner ring. The at least one guiding and retaining element therefore does not have to be guided over the board of the bearing ring during assembly of the rolling bearing.

The number and arrangement of the guiding and holding elements on the additional ring can be chosen arbitrarily. In a preferred embodiment, a plurality of evenly spaced guide and holding elements are formed on the additional ring along its circumference. This arrangement of the guiding and holding elements is advantageous in that it allows a uniform employment of the rolling elements on the board along the entire bearing circumference.

The attachment of the additional ring on one of the two cage side rings can be done in various ways. In a preferred embodiment, a plurality of axially aligned connecting lugs are formed on the additional ring along its circumference, by means of which the additional ring is attached to the one cage side ring. In this embodiment, the distance of the at least one guide and holding element of the large board of the bearing inner ring can be adjusted simply by the fact that the length of the connecting lugs is suitably chosen.

There are various possibilities for establishing the connection between the additional ring and the one of the two cage side rings. at a preferred embodiment of the rolling bearing according to the invention it is provided that the attachment of the additional ring on the one cage side ring is positively and / or cohesively. In a positive connection axial insertion holes may be provided in the one cage side ring of the bearing cage into which the connection lugs of the additional ring inserted and in which they are held positively. In a cohesive connection, the connection tabs can be attached, for example by using an adhesive at corresponding locations of a cage side ring of the bearing cage. A combination of positive and cohesive connection is also possible.

In the two independent technical solutions of the underlying object, it is possible to form the at least one guiding and holding element of the shape in various ways. Thus, in a preferred embodiment, the at least one guiding and retaining element is designed as a retaining claw extending in a straight line to the board, that is to say radially inward. In another preferred embodiment, the at least one guiding and holding element is designed as a retaining claw bent at its tip towards the rim.

Both the guiding and holding elements or retaining claws and the axially to be fixed additional ring can be made of a different material than the bearing cage. Thus, it is possible that the bearing cage made of a metallic material and the guiding and holding elements or retaining claws or the additional ring are made of a plastic.

The rolling elements of the rolling bearing are formed in a preferred embodiment of the invention as tapered rollers. The rolling bearing is therefore a tapered roller bearing.

Brief description of the drawing

The invention will be explained in more detail with reference to two embodiments with reference to the accompanying drawings. It shows

1 a detail of a rolling bearing according to a first embodiment of the invention in a perspective view,

2 the bearing cage of in 1 shown rolling bearing in a perspective view,

3 a detail of a rolling bearing according to a second embodiment of the invention in a perspective view, and

4 a section of a bearing cage of in 3 shown rolling bearing in a perspective view.

detailed description

1 shows therefore a rolling bearing 1 , which is designed here as a tapered roller bearing. The rolling bearing 1 includes a bearing outer ring 3 and a bearing inner ring 5 into the careers 7a . 7b are introduced. Between the career 7a of the bearing inner ring 5 and the career 7b of the bearing outer ring 3 is a plurality of tapered rolling elements 9 arranged, two of which are in 1 you can see.

The tapered rollers 11 roll on the raceways 7a . 7b the bearing rings 3 . 5 from. To unroll the tapered rollers 11 at the raceways 7a . 7b to lead is on the one hand (in 1 on the right side) of the track 7a of the bearing inner ring 5 a big board 13 educated. The board 13 extends from the bearing inner ring 5 from radially outward toward the bearing outer ring 3 , The bearing outer ring 3 is executed bordlos in this embodiment. In addition, the bearing inner ring 5 on its axially opposite side no board, so that in an assembly of the rolling bearing 1 one with the rolling elements 9 filled storage cage 15 largely without problems over the bordlose axial end of the bearing inner ring 5 can be pushed onto the bearing inner ring.

The camp cage 15 itself is by two cage side rings 17a and 17b formed of which in 1 only the cage side ring 17b you can see. The two cage side rings 17a . 17b are by a plurality of cage bars 19 connected together along the perimeter of the two cage side rings 17a . 17b are arranged and between which open spaces in the form of bags 21 are formed. In these bags 21 are the tapered rollers 11 arranged so rotatably that they are on the raceways 7a . 7b of the bearing inner ring 5 and the raceway of the bearing outer ring 3 can roll off.

For axial securing of the bearing cage 15 and the rolling element 9 . 11 on the bearing inner ring 5 serve several guiding and holding element 23 attached to the on-board cage side ring 17b are arranged. The guiding and holding elements 23 are as holding claws 25 formed, extending from the bearing cage 15 from radially inward to the board 13 extend out and the board 13 engage behind axially. By the Hintergreifung of the Bordes 13 are the tapered rollers 11 on the board 13 arranged at a predetermined axial distance. The holding claws 25 extend at the in 1 illustrated embodiment straight to the board 13 back and cover this radially with its radially inner end.

For attachment of the guiding and holding elements 23 on the cage side ring 17b are at this radial openings 27 educated. The openings 27 are along the circumference of the cage side ring 17b evenly spaced. In each of the openings 27 is in each case a guiding and holding element 23 in the form of a holding claw 25 attached. The opening 27 is here as a through hole 29 formed, in which the retaining claw 25 is introduced. The permanent attachment of the retaining claw 25 at the through hole 29 is made by fasteners 31 guaranteed. The fastener 31 Each is a screw or a pin that passes through one in the cage side ring 17b and the holding claw 25 introduced axial threaded hole are screwed. Other embodiments of the fastener 31 are of course also possible.

The assembly of the rolling bearing 1 , So the assembly of the bearing inner ring 5 , the camp cage 15 and the bearing outer ring 3 takes place such that initially the bearing cage 15 with the tapered rollers 11 (in 1 from left to right) on the bearing inner ring 5 is pushed, and then the bearing outer ring 3 on the tapered rollers 11 is pushed. Then the holding claws 25 successively in the through holes 29 introduced and by means of fasteners 31 attached. It is also possible that the guiding and holding elements 23 or holding claws 25 with the edges of the through holes 29 be clipped.

The procedure described during assembly of the rolling bearing 1 makes it unnecessary for the holding claws 25 over the board 13 must be carried away and thereby possibly damaged.

2 shows the bearing cage 15 of in 1 shown rolling bearing 1 in a perspective side view overlooking the guiding and holding elements 23 or holding claws 25 , At the camp cage 15 is in the cage side ring 17b each in extension of every third cage bar 19 a radial through hole 29 present, in each case a holding claw 25 by means of two fasteners 31 is attached. The number and arrangement of through holes 29 and the fastener 31 is not you on the in 2 shown embodiment limited. So can the through holes 29 for example, in places of the cage side ring 17b between two adjacent cage bars 19 be provided. How many through holes 29 one plans and where one arranges these, depends on the respective application of the rolling bearing 1 from.

3 shows a section of a rolling bearing 1' in a perspective view according to a second embodiment of the present invention. In this embodiment, the retaining claws 25 in one piece on an additional ring 33 educated. Also in this embodiment, the number and arrangement of the retaining claws depend 25 from that for the rolling bearing 1' intended use.

3 makes it clear that the holding claws 25 in this embodiment at their tips 35 to the board 13 of the bearing inner ring 5 bend axially. It should be noted that in the in 3 shown embodiment, of course, the rectilinearly extending retaining claws 25 according to 1 Use can be found, of course, the reverse, of course, at their tips 35 to the board 13 towards curling holding claws 25 according to 3 in the embodiment according to 1 can be used. Also possible are any other shapes for the retaining claws 25 , Which shape is chosen depends on the desired adjustment of the tapered rollers 11 to the board 13 and of an optionally desired axial spring action of the retaining claws 25 from.

At the in 3 embodiment shown are the retaining claws 25 along the circumference of the additional ring 33 evenly spaced.

For attachment of the additional ring 33 on the cage side ring 17b are at the additional ring 33 several axially aligned connecting lugs 37 formed, by means of which the additional ring 33 on the front side of the cage side ring 17b is appropriate. The attachment of the additional ring 33 on the cage side ring 17b done by positive locking. For this purpose, the cage side ring 17b a plurality of axial plug holes on the front side, the number and arrangement of the associated connection tabs 37 correspond. In these plug-in openings are the connection tabs 37 plugged in, causing the auxiliary ring 33 firmly on the cage side ring 17b is appropriate.

It should be noted that when attaching the additional ring 33 on the cage side ring 17b Other means may be used. Thus, for example, a cohesive connection by means of an adhesive or a melting of the tips of the connecting lugs 37 at the axial contact points on the cage side ring 17b possible.

This in 3 shown embodiment of the rolling bearing 1' has the additional advantage that the additional ring 33 in any relative orientation to the cage side ring 17b can be attached to this.

Also in this embodiment of the rolling bearing 1' the assembly is done in such a way that first the bearing inner ring 5 , the camp cage 15 with the rolling elements recorded there 9 . 11 and the bearing outer ring 3 assembled to a baufesten unit, and then the additional ring 33 with the retaining claws 25 on the cage side ring 17b is attached. The holding claws 25 So experience here also no damage by the board 13 of the bearing inner ring 5 as they are not above the board during assembly 13 have to be taken away.

4 shows a perspective section of the bearing cage 15 of in 3 shown rolling bearing 1' , As 4 clarified, are the connecting lugs 37 of the additional ring 33 each at such locations with the cage side ring 17b connected to which the cage bars 19 on the cage side ring 17b to meet. Of course, the additional ring 33 also in a different relative orientation with the cage side ring 17b get connected. For example, this could be done in such a way that the connection tabs 37 approximately in the middle between two adjacent cage bars 19 with the cage side ring 17b get connected.

From all of this it is clear that in the rolling bearing according to the invention 1 . 1' a simple and at least one guiding and holding element 23 non-damaging mounting is possible.

LIST OF REFERENCE NUMBERS

1, 1 '

roller bearing

3

Bearing outer ring

5

Bearing inner ring

7a, 7b

career

9

rolling elements

11

tapered rollers

13

shelf

15

bearing cage

17a

Cage side ring

17b

Cage side ring

19

cage webs

21

bag

23

Guiding and holding element

25

Retaining claw

27

opening

29

Through Hole

31

fastener

33

additional ring

35

Tip of the holding claw

37

connection tab

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4338350 A1 [0002]
• DE 3404200 A1 [0004]

Claims (10)

Roller bearing ( 1 ) with a bearing outer ring ( 3 ), a bearing inner ring ( 5 ) and a plurality of rolling elements ( 9 ), which between the bearing outer ring ( 3 ) and the bearing inner ring ( 5 ) are arranged by a bearing cage ( 15 ) are held at predetermined distances from each other and on raceways ( 7a . 7b ) of the bearing rings ( 3 . 5 ), of which at least one track passes through a board ( 13 ), the bearing cage ( 15 ) two cage side rings ( 17a . 17b ) and a plurality of the cage side rings ( 17a . 17b ) connecting cage webs ( 19 ), and in which from the bearing cage ( 15 ) of at least one guiding and holding element ( 23 ) to the board ( 13 ) and the board ( 13 ) axially behind, characterized in that in one of the cage side rings ( 17b ) at least one opening ( 27 ) is formed, in which the at least one guiding and holding element ( 23 ) is attached. Rolling bearing according to claim 1, characterized in that the at least one opening ( 27 ) in the cage side ring ( 17b ) is formed radially aligned. Rolling bearing according to claim 1 or 2, characterized in that the at least one opening ( 27 ) a through hole ( 29 ) into which the guiding and holding element ( 23 ) and by at least one fastening means ( 31 ) is attached. Roller bearing ( 1' ) with a bearing outer ring ( 3 ), a bearing inner ring ( 5 ) and a plurality of rolling elements ( 9 ), which between the bearing outer ring ( 3 ) and the bearing inner ring ( 5 ) are arranged by a bearing cage ( 15 ) are held at predetermined distances from each other and on raceways ( 7a . 7b ) of the bearing rings ( 3 . 5 ), of which at least one track passes through a board ( 13 ), the bearing cage ( 15 ) two cage side rings ( 17a . 17b ) and a plurality of the cage side rings ( 17a . 17b ) connecting cage webs ( 19 ), and in which from the bearing cage ( 15 ) of at least one guiding and holding element ( 23 ) to the board ( 13 ) and the board ( 13 ) axially behind, characterized in that on one of the cage side rings ( 17b ) an additional ring ( 33 ) is attached, with which the at least one guiding and holding element ( 23 ) is integrally formed. Rolling bearing according to claim 4, characterized in that on the additional ring ( 33 ) along its circumference a plurality of equally spaced guide and holding element ( 23 ) are formed. Rolling bearing according to claim 4 or 5, characterized in that on the additional ring ( 33 ) along its circumference a plurality of connecting tabs ( 37 ) are formed, by means of which the additional ring ( 33 ) on the one cage side ring ( 17b ) is attached. Rolling bearing according to one of claims 4 to 6, characterized in that the attachment of the additional ring ( 33 ) on the one cage side ring ( 17b ) is positively and / or cohesively. Rolling bearing according to one of the preceding claims, characterized in that the at least one guiding and holding element ( 23 ) as a straight line to the board ( 13 ) extending retaining claw ( 25 ) is trained. Rolling bearing according to one of the preceding claims, characterized in that the at least one guiding and holding element ( 23 ) as one at its top ( 35 ) to the board ( 13 ) curved retaining claw ( 25 ) is trained. Rolling bearing according to one of the preceding claims, characterized in that the rolling bodies ( 9 ) as tapered rollers ( 11 ) are formed.

Images