WO2018224072A1

WO2018224072A1 - Bearing retaining device for retaining a rolling bearing of a vehicle shaft

Info

Publication number: WO2018224072A1
Application number: PCT/DE2018/100251
Authority: WO
Inventors: Jean-Philippe DIETRICH; Raphael Wittmann; Xavier Mehul; Pierre Simon
Original assignee: Schaeffler Technologies AG & Co. KG
Priority date: 2017-06-07
Filing date: 2018-03-22
Publication date: 2018-12-13
Also published as: DE102017112469A1

Abstract

The invention relates to a bearing retaining device (1) for retaining a rolling bearing (4) of a vehicle shaft, comprising a bearing flange (3) for receiving a rolling bearing (15), wherein the bearing flange (3) has a closed receiving means (4) for an outer bearing element of a rolling bearing (15), and wherein the receiving means (4) is formed as a single piece.

Description

Bearing holding device for holding a rolling bearing of a vehicle shaft

The invention relates to a bearing holding device for holding a rolling bearing of a vehicle shaft with a bearing flange for receiving a rolling bearing, wherein the bearing flange comprises a closed receptacle for a bearing outer element of a rolling bearing.

A known prior art bearing fixture 1 is shown in FIG.

This bearing support device 1 comprises a mounting flange 2 and a bearing flange 3. Both flanges 2, 3 are each formed semicircular and open and together form a receptacle 4 for a rolling bearing 15th

As can be seen in FIG. 7, the fastening flange 2 and the bearing flange 3 clamp the outer ring of the roller bearing 15 in the receptacle 4.

In this known bearing support device 1, it can be observed that when the bearing flange 3 is mounted on the fastening flange 2, excessive and non-heterogeneous clamping forces from the two flanges 2, 3 act on the outer ring of the rolling bearing 15.

This has the consequence that the outer ring is deformed and thus the running properties of the rolling bearing 15 are impaired. As a result, a rapid wear of the rolling bearing 15 is observed.

It is therefore an object of the present invention to provide a bearing holding device for holding a rolling bearing of a vehicle shaft, which is inexpensive and can be produced materially and with a heterogeneous clamping force acting on an outer ring of a rolling bearing, whereby the wear of the rolling bearing can be reduced and its life is increased ,

This object is achieved by the features of the independent claim. Further advantageous developments are the subject of the dependent claims.

According to the invention, in the present invention, a bearing holding device for holding a rolling bearing of a vehicle shaft includes a bearing flange for receiving a rolling bearing. Preferably, the bearing flange comprises a closed receptacle for a bearing outer element of a rolling bearing. Thus, it is not possible to apply a clamping force on a bearing outer element or an outer ring of a roller bearing, which deforms the bearing outer element. Another advantage of a closed receptacle is that assembly errors during assembly of a receptacle can be avoided.

Also, it is advantageous if the receptacle is circular or annular or hollow cylindrical. Thus, a closed receptacle can be easily formed, which is not formed by mounting two parts, assembly errors are avoidable. Furthermore, by means of a circular or annular formed receiving a force transmission to a rolling bearing can be avoided, which deforms the rolling bearing or its outer bearing element / outer ring.

Conveniently, the receptacle is integrally formed. On the one hand, the assembly is facilitated and on the other hand, the mechanical stability is increased. It is also possible in this embodiment, forces acting on the bearing flange, ho like to transfer to a rolling bearing or along the entire circumference of a bearing outer element of a rolling bearing.

Furthermore, it is favorable if the receptacle for contacting a roller bearing comprises at least two segment surfaces which are arranged in the circumferential direction of the receptacle. In other words, at least two segment surfaces together form the receptacle or its surface. On this surface, a rolling bearing is preferably arranged.

It is also preferred that two adjacent segment surfaces are oppositely inclined or inclined in the opposite direction. Thus, it is possible to provide a segment area with a clamping area and an area for inserting a rolling bearing into the housing. By means of the opposite inclination, a roller bearing can not be displaced out of the receptacle along a theoretical axis of rotation of a roller bearing.

In other words, it is advantageous if each segment surface is inclined to the radial direction or to a theoretical axis of rotation of a roller bearing. Strictly speaking, each inclined segment surface is inclined both to the radial direction and to a theoretical axis of rotation of a rolling bearing. It can also be provided that the bearing flange or the bearing holding device comprises a first and a second end face.

Advantageously, a first segment surface is inclined such that it has a larger distance in the radial direction to a theoretical axis of rotation of a rolling bearing on the first end face than on the second end face. Consequently, it is possible to clamp a rolling bearing with the first segment surface on the second end face of the bearing flange. In contrast, a roller bearing can be introduced into the receptacle of the bearing flange by means of the first segment surface on the first end side. In the present specification, a "theoretical axis of rotation of a rolling bearing" is preferably understood to mean an axis that relates to the bearing flange or its receptacle, and also that the "theoretical axis of rotation of a rolling bearing" preferably characterizes an axis for the bearing flange or shaft for the recording, which is congruent with an axis of rotation of a rolling bearing, which can be arranged in the receptacle.

It is also advantageous if a second segment surface is inclined such that it has a smaller distance in the radial direction to a theoretical axis of rotation of a roller bearing on the first end side than on the second end side. In this case, it is possible to clamp a rolling bearing with the second segment surface on the first end side of the bearing flange. On the other hand, a roller bearing can be introduced into the receptacle of the bearing flange by means of the second segment surface on the second end face.

Conveniently, the first and second segment surfaces directly adjoin one another. As a result, therefore, a roller bearing can be clamped to the first end face and a second end face of the bearing flange.

Furthermore, it is advantageous if each segment surface extends from the first end side to the second end side. Thus, each segment surface along a theoretical axis of rotation of a rolling bearing form a segment or a part of the receptacle of the bearing flange. Preferably, each segment surface extends over a determinable angular range of the recording. It is advantageous if the determinable angular range of the receptacle, starting from a theoretical axis of rotation of a rolling bearing, preferably in the circumferential direction of the rolling bearing or the receptacle, can be fixed.

Advantageously, the determinable angular range comprises a range between 10 and 150 degrees, in particular 30 degrees. In the event that the determinable angle range is 30 degrees, so twelve segment surfaces form a receptacle, in particular a circular or annular or hollow cylindrical receptacle, the bearing flange.

Furthermore, it is advantageous if, in the direction of a theoretical axis of rotation of a roller bearing, the at least one segment surface comprises a mounting region and a clamping region. Thus, a roller bearing can be clamped on one side or in a region of the segment surface and a roller bearing can be mounted on the other side or in another region of the segment surface.

Conveniently, the mounting area merges fluently in the clamping area. It is also advantageous if the clamping area flows smoothly into the mounting area. This facilitates the mounting of a roller bearing in the receptacle or in the clamping region of a segment surface.

It is also advantageous if, along a theoretical axis of rotation of a roller bearing, the mounting area extends from an end face of the bearing flange to the clamping area or to the center of the housing.

Advantageously, along a theoretical axis of rotation of a roller bearing, the clamping region extends from an end face of the bearing flange to the mounting region or to the center of the receptacle.

In other words, it is advantageous if the clamping area and the mounting area in the direction of a theoretical axis of rotation of a roller bearing each share in half a segment area or together form a segment area of the receptacle.

Again, in other words, it is advantageous if the center of the receptacle is arranged centrally between the first and second end faces of the bearing flange in the direction of a theoretical axis of rotation of a roller bearing.

Preferably, the clamping area is adapted to a bearing outer element of a roller bearing in order to at least partially embrace it in a form-fitting manner. In this way Forces can be transferred from the bearing retainer to a rolling bearing or vice versa.

It is also advantageous if the clamping area is spherical. In this way, a spherically formed outer ring or a spherically formed bearing outer element of a roller bearing can be received in a simple manner.

Furthermore, it is advantageous if the bearing holding device comprises a mounting flange for attachment to a vehicle element.

It can also be provided that the mounting flange and the bearing flange are integrally formed. This facilitates assembly and is the manufacturing cost. Advantageously, the mounting flange and the bearing flange are arranged in one plane. Thereby, it is possible to arrange the bearing holding device, for example, on a passage for a shaft.

Furthermore, it can be provided that the mounting flange is arranged radially outside of the bearing flange. This facilitates mounting in the axial direction or in the direction of a theoretical axis of rotation of a roller bearing. In other words, it is thus easy to arrange the bearing holding device on, for example, a passage for a shaft on a vehicle body.

It is also possible for the fastening flange to comprise at least one fastening region. This allows attachment of the bearing support device to, for example, a vehicle.

The at least one fastening region is expediently designed as a passage for a fastening element, in particular a screw or a rivet. Thus, therefore, a simple and fast attachment is possible.

Furthermore, it is advantageous for the receptacle to comprise at least one bearing engagement region in order to mount a rolling bearing within the bearing flange, in particular within the receptacle.

The at least one bearing mounting area is expediently arranged on the inside of the receptacle, in particular on the circular or annular or hollow cylindrical receptacle. Advantageously, the bearing flange comprises a first and a second end face, wherein preferably at least one bearing mounting region of the receptacle is arranged on the first end face of the bearing flange.

It is also advantageous if at least one bearing mounting region of the receptacle comprises a ramp shape. Thus, for example, a roller bearing can be used in the recording of the bearing flange in a simple manner.

It is advantageous if, when inserting a rolling bearing, this is arranged on the at least one bearing mounting area and oriented substantially perpendicular to the receiving of the bearing flange. Furthermore, it is favorable if, following this, the rolling bearing can be correctly or functionally positioned in the receptacle of the bearing holding device by a simple 90 degree rotation.

Conveniently, the bearing flange or the bearing holding device comprises a first and a second end face, wherein preferably the ramp shape increases from the first end side toward the center of the receptacle. Preferably, the center of the receptacle is arranged centrally between the first and second end faces of the bearing flange in the direction of a theoretical axis of rotation of a roller bearing.

It is also advantageous if two bearing mounting areas are arranged diametrically on the receptacle. This facilitates the installation of the rolling bearing in the recording. Furthermore, it is advantageous if the bearing holding device comprises a plastic, in particular a polymeric material, which is preferably polyamide in the polymeric material. With the aid of such a bearing support device, a clamping force or a holding force can be applied uniformly to the entire outer ring or the entire outer bearing element of a roller bearing in a simple manner. Thus, the life of a bearing holder can be extended.

Furthermore, it is advantageous if the bearing holding device at least one stiffening device, in particular stiffeners, such. B. stiffening ribs having. Preferably, the stiffening ribs are oriented or formed in the radial and / or tangential and / or in the direction of a theoretical axis of rotation of a roller bearing. The stiffener can be used to create a lightweight yet mechanically stable bearing retainer. It should also be noted that preferably by means of a bearing holding device, as described above, a rolling bearing can align itself within the receptacle of the bearing flange. Thus movements of a shaft mounted in the rolling bearing can be additionally compensated. The invention will be explained in more detail with reference to an embodiment in conjunction with accompanying drawings. Here are shown schematically:

Figure 1 is a 3-dimensional view of a second end face of a bearing support device according to the invention. Fig. 2 is a 3-dimensional sectional view of a second

Front side of the bearing holding device according to the invention of Figure 1;

Fig. 3 is an enlarged view of Figure 2;

Fig. 4 is a 3-dimensional view of the second end face of a bearing holding device according to the invention with an in

Assembly located rolling bearings;

Figure 5 is a 3-dimensional view of the second end face of a bearing support device according to the invention with a mounted rolling bearing. 6 shows a 3-dimensional view of the second end face of a bearing holding device according to the invention with an inserted rolling bearing; and

Fig. 7 shows a bearing holding device of the prior art.

In the following description, like reference characters will be used for like items.

FIG. 1 shows a 3-dimensional view of a second end face 7 of a bearing holding device 1 according to the invention.

More specifically, Figure 1 shows a bearing holding device 1 for holding a rolling bearing 15 of a vehicle shaft. In this case, the bearing holder 1 has a mounting flange 2 for attachment to a vehicle element and a bearing flange 3 for receiving a rolling bearing 15th

According to FIG. 1, the fastening flange 2 and the bearing flange 3 are formed in one piece, wherein the fastening flange 2 and the bearing flange 3 are arranged in one plane.

Also, the mounting flange 2 is disposed radially outside of the bearing flange 3 and has three attachment portions. 5

The three attachment areas are 5 designed as a passage for a fastener or for a screw or a rivet.

The bearing flange 3, however, comprises a closed receptacle 4 for a bearing outer element of a rolling bearing 15, wherein the receptacle 4 is integrally formed or consists of a part.

In this case, the bearing holder 1 and the bearing flange 3 in addition to the second end face 7 and a first end face. 6

The bearing device 1 is made of a polyamide and has stiffening radial stiffening or stiffening ribs 1 1 and tangential stiffeners or stiffening ribs 10 in the circumferential direction U on.

In the present example, therefore, within the tangential stiffening 10 of the bearing flange 3 and outside the tangential stiffening 10 of the mounting flange. 2

Figure 2 shows a 3-dimensional sectional view of the second end face 7 of the bearing support device 1 according to the invention of Figure 1, wherein Figure 3 shows an enlarged sectional view of Figure 2. For the sake of simplicity, both figures will be explained below at the same time, with the following statements on FIGS. 2 and 3 also being understood in addition to FIG.

Thus, FIGS. 2 and 3 show that the receptacle 4 for contacting a roller bearing 15 comprises various segment surfaces 8, 9 which are arranged in the circumferential direction U of the receptacle 4. In each case, two adjoining segment surfaces 8, 9 inclined opposite or inclined in the opposite direction.

With reference to Figure 3 is z. B. a first segment surface 8 inclined so that it has a greater distance in the radial direction R to a theoretical axis of rotation TDA of a rolling bearing 15 at the first end face 6 than at the second end face. 7

Further, for example, a second segment surface 9 is inclined so that it has a smaller distance in the radial direction R to a theoretical axis of rotation TDA of a rolling bearing 15 at the first end face 6 than at the second end face 7. The two explained segment surfaces or the first 8 and the second segment surface 9 directly adjoin one another. Also, these two are just exemplary picked.

The receptacle 4 comprises - as shown in FIGS. 1 to 3 - further segment surfaces with identical inclination, like the segment surfaces 8 and 9. Furthermore, each segment surface 8, 9 extends from the first end side 6 towards the second end side 7.

Also, each segment surface 8, 9 extends over a certain angular range of the receptacle 4, which is determined starting from a theoretical axis of rotation TDA of a rolling bearing 15. In the present example according to FIGS. 1 to 6, the determinable angular range has 30 degrees and thus a total of twelve inclined segment surfaces.

Thus, the annular zw. Circular or hollow cylindrical receptacle 4 is composed of twelve segment surfaces, which can accommodate an outer ring or a bearing outer element, together. As FIG. 3 also shows, in the direction of a theoretical axis of rotation TDA of a roller bearing 15, each segment surface 8, 9 has a mounting region 12 and a clamping region 13.

In this case, the mounting area 12 is flowing into the clamping area 13 via or vice versa. The mounting region 12 extends along a theoretical axis of rotation TDA of a rolling bearing 15 from an end face 6, 7 of the bearing flange 3 to the center M of the receptacle 4.

The clamping region 13 also extends along a theoretical axis of rotation TDA of a rolling bearing 15 from an end face 6, 7 of the bearing flange 3 to the center M of the receptacle 15.

With reference to the segment surface 8 in the present example, the mounting region 12 extends from the first end face 6 of the bearing flange 3 to the center M of the receptacle 4. The clamping region 13 extends from the second end face 7 of the bearing flange 3 to the center M of the receptacle 4.

Furthermore, the clamping region 13 is adapted to a bearing outer element of a rolling bearing 15 in order to at least partially surround it in a form-fitting manner.

According to Figure 3, the clamping portion 13 is spherical. As shown in Figure 2, the receptacle 4 has one or two opposite bearing mounting portions 14 to attach a rolling bearing 15 within the bearing flange 3 and within the receptacle 4.

In this case, the bearing mounting region 14 shown in Figure 2 is arranged on the inside of the receptacle 4 and on the second end face 7 of the bearing flange 3. Each bearing mounting portion 14 of the receptacle 4 has a ramp shape, which increases from the second end face 7 toward the center M of the receptacle 4.

Two bearing mounting portions 14 are arranged diametrically on the receptacle 4.

FIGS. 4 to 6 each show a 3-dimensional view of the second end face 7 of the bearing holding device 1 according to the invention with a roller bearing 15 mounted or with an antifriction bearing 15 inserted.

According to FIG. 4, first of all a roller bearing 15, which is intended to be inserted into the bearing holding device 1, is arranged at 90 degrees to the mounting flange 2 and to the bearing flange 3 in the ramped bearing mounting regions 14.

By a simple 90 degree rotation, as shown in FIG. 5, the roller bearing 15 can be correctly or functionally positioned in the receptacle 4 of the bearing support device 1 (see FIG. Due to the arrangement of the rolling bearing 15 in the receptacle 4 and the configuration of the receptacle 4 with the clamping regions 13 of the segment surfaces 8, 9 forces acting on the roller bearing 15 can be transmitted from the clamping regions 13 on the bearing flange 3 and on the entire bearing retainer 1. Of course, this also applies vice versa.

Thus, a uniformly acting tension or holding force can be generated on the rolling bearing 15 or on its outer ring or bearing outer element.

In this way, so the bearing outer element of the bearing 15 can be securely clamped. Finally, for the sake of completeness, it will be mentioned that FIG. 7 shows a bearing holding device 1 from the prior art.

This known bearing support device 1 has already been briefly discussed at the beginning of the present description.

LIST OF REFERENCES

1 bearing holder

2 mounting flange

3 bearing flange

4 recording

5 mounting area

6 first face

7 second end face

8 segment area

9 segment area

10 tangential stiffening

1 1 radial stiffening

12 mounting area

13 clamping area

14 bearing assembly area

5 rolling bearings

M middle of recording

R radial direction

TDA theoretical axis of rotation of a rolling bearing

U circumferential direction of the recording

Claims

claims

1 . A bearing holding device (1) for holding a rolling bearing (15) of a vehicle shaft comprising:

a bearing flange (3) for receiving a roller bearing (15),

- Wherein the bearing flange (3) comprises a closed receptacle (4) for a bearing outer element of a rolling bearing (15), and

- Wherein the receptacle (4) is integrally formed.

2. bearing holding device according to claim 1,

- Wherein the receptacle (4) for contacting a rolling bearing (15) at least two segment surfaces (8, 9) which are arranged in the circumferential direction (U) of the receptacle (4), and

- Wherein two adjacent segment surfaces (8, 9) are inclined in opposite directions.

Bearing holding device according to claim 1 or 2,

- where the bearing flange

(3) comprises a first (6) and a second end face (7),

wherein preferably a first segment surface (8) is inclined in such a way that it has a larger distance in the radial direction (R) to a theoretical axis of rotation (TDA) of a roller bearing (15) on the first end side (6) than on the second end side (6). 7), and / or

wherein preferably a second segment surface (9) is inclined in such a way that it has a smaller distance in the radial direction (R) to a theoretical axis of rotation (TDA) of a roller bearing (15) at the first end side (6) than at the second end side (6). 7)

wherein preferably the first (8) and the second segment surface (9) directly adjoin one another.

Bearing fixture according to one of the preceding claims, wherein each segment surface (8, 9) extends from the first end face (6) towards the second end face (7),

wherein preferably each segment surface (8, 9) extends over a determinable angular range of the receptacle (4),

- Where preferably the determinable angle range of the recording

(4) can be fixed starting from a theoretical axis of rotation (TDA) of a roller bearing (15),

- Preferably, the determinable angle range includes a range between 10 and 150 degrees, in particular 30 degrees.

5. bearing support device according to one of the preceding claims,

wherein, in the direction of a theoretical axis of rotation (TDA) of a roller bearing (15), the at least one segment surface (8, 9) comprises an assembly region (12) and a clamping region (13),

wherein preferably the mounting region (12) flows smoothly into the clamping region (13),

- wherein preferably along a theoretical axis of rotation (TDA) of a rolling bearing (15) of the mounting portion (12) from an end face (6, 7) of the bearing flange (3) to the clamping region (13) or the center (M) of the receptacle (4) extends.

6. bearing holding device according to one of the preceding claims,

wherein, in the direction of a theoretical axis of rotation (TDA) of a roller bearing (15), the at least one segment surface (8, 9) comprises a mounting region (12) and a clamping region (13),

wherein preferably the clamping region (13) flows smoothly into the mounting region (12),

- wherein preferably along a theoretical axis of rotation (TDA) of a rolling bearing (15) of the clamping region (13) from an end face (6, 7) of the bearing flange (3) to the mounting area (12) or the center (M) of the receptacle ( 15) extends, wherein preferably the clamping region (13) is adapted to a bearing outer element of a roller bearing (15) in order to at least partially embrace it in a form-fitting manner,

- Preferably wherein the clamping region (13) is spherical.

7. bearing holding device according to one of the preceding claims,

- wherein the bearing holding device (1) comprises a fastening flange (2) for fastening to a vehicle element,

wherein preferably the fastening flange (2) and the bearing flange (3) are formed integrally,

- Preferably wherein the mounting flange (2) and the bearing flange (3) are arranged in a plane.

wherein preferably the fastening flange (2) is arranged radially outside of the bearing flange (3),

wherein preferably the fastening flange (2) comprises at least one fastening region (5),

- Preferably, the at least one mounting portion (5) as a passage for a fastener, in particular a screw or a rivet, is formed.

8. bearing holding device according to one of the preceding claims,

- wherein the receptacle (4) comprises at least one bearing mounting portion (14) for mounting a roller bearing (15) within the bearing flange (3), in particular within the receptacle (4),

- Preferably, the at least one bearing mounting portion (14) is arranged on the inside of the receptacle (4).

Bearing fixture according to one of the preceding claims,

- wherein the bearing flange (3) comprises a first (6) and a second end face (7),

- Preferably, at least one bearing mounting portion (14) of the receptacle (4) on the second end face (7) of the bearing flange (3) is arranged.

10. bearing support device according to one of the preceding claims,

- wherein at least one bearing mounting portion (14) of the receptacle (4) comprises a ramp shape,

wherein preferably the bearing flange (3) comprises a first (6) and a second end face (7),

wherein preferably the ramp shape increases from the second end face (6) towards the center (M) of the receptacle (4),

- Preferably, two bearing mounting portions (14) are arranged diametrically on the receptacle (4).