DE102012216435A1 - Bearing assembly for use with gear assembly, has bearing flange with doubling, which connects flange collar and bearing seat in one piece, where outer ring is fastened in axial direction in form-locking manner - Google Patents

Abstract

The bearing assembly (2) has a bearing flange (3), which has a radially extending flange collar (3a) and an axially extending bearing seat (3b), and an outer ring (4a) for a bearing (4), where the outer ring is arranged in the bearing seat of the bearing flange. The bearing flange has a doubling (3c), which connects the flange collar and the bearing seat in one piece, where the outer ring is fastened in an axial direction in a form-locking manner. The bearing flange is designed as a shaped portion. An independent claim is included for gear assembly.

Description

Field of the invention

The invention relates to a bearing assembly with a bearing flange, wherein the bearing flange has a radially extending flange collar and an axially extending bearing seat, with an outer ring for a bearing, wherein the outer ring is arranged in the bearing seat of the bearing flange. The invention also relates to a gear arrangement with the bearing arrangement.

Holding devices are used to secure bearings safely, the holding devices i. d. R. have a circular cross-section receiving area for receiving the bearing. Such holding devices find z. B. in a transmission application, the bearing u. a. used for storage of a gear shaft.

For example, the DE 10 2006 034 921 A1 , which is probably the closest prior art, a bearing carrier with an insert for receiving at least one bearing. The insert is arranged in a flange, wherein the insert is axially secured by means of a circumferential projection in the flange.

The invention has for its object to propose a bearing assembly which holds an outer ring in a simple and reliable manner. This object is achieved by a bearing arrangement having the features of claim 1 and by a gear arrangement having the features of claim 6. Preferred or advantageous embodiments of the invention will become apparent from the dependent claims, the following description and the accompanying drawings.

According to the invention, a bearing arrangement is proposed which comprises a bearing flange. The bearing flange is designed to receive a bearing. Through the bearing flange, an axis of rotation of the bearing is defined. The bearing flange has a flange collar extending radially with respect to the axis of rotation and a bearing seat extending axially with respect to the axis of rotation. In particular, the flange collar is perpendicular to the axis of rotation and the bearing seat is coaxial with the axis of rotation. The flange collar and the bearing seat, viewed in a cross section along the axial course of the bearing flange, preferably angled, z. B. at an angle of 90 ° to each other.

The flange collar is designed in particular as a carrier plate with a preferably circular receiving opening. The bearing seat is designed in particular as a straight hollow cylindrical sleeve. It is intended to form the flange collar and the bearing seat in one piece and in particular from a common, one-piece semi-finished product. In particular, the bearing flange is made of a metallic material. The flange collar preferably has a plurality of axially extending recesses for attachment.

The bearing assembly includes an outer ring for the bearing, wherein the outer ring is disposed in the bearing seat of the bearing flange. In particular, the outer ring bears circumferentially against the bearing seat. In the installation position, the outer ring also defines the axis of rotation.

In the context of the invention it is proposed that the bearing flange has a duplication, which integrally connects the flange collar and the bearing seat and secures the outer ring in one of the axial directions with respect to the axis of rotation in a form-fitting manner. The duplication forms a transition region between the flange collar and the bearing seat. In this way, the doubling secures at least a portion of an end face of the outer ring, which extends in a radial plane perpendicular to the axis of rotation, in one of the axial directions.

The duplication forms an axial stop for the outer ring and implements a captive securing and / or positioning of the outer ring in one of the axial directions in the bearing flange. Furthermore, it is advantageous in the implementation that the doubling forms a reinforcement in the bearing flange. Thus, the bearing flange is dimensionally stable even with respect to high, transmitted from the outer ring mechanical loads. At the same time, doubling due to the area-wise reinforcement in the bearing flange to a lightweight and compact design.

In particular, the doubling is designed as a material doubling of the base material of the bearing flange. In the material doubling material sections, z. B. ring sections, provided, which are arranged at least two layers. The material duplication is z. B. made of a one-piece base material section, which is bent over and thereby formed into a double-layered. In particular, the base material in the region of the doubling is arranged in a U-shaped cross section along the axis of rotation, wherein the closed base of the US has a deflection region in the direction of the axis of rotation.

Particularly preferably, the doubling has a first and a second ring section. The first and second ring sections are preferably superimposed, overlapping and / or congruent in an axial overlap region educated. For example, the first and the second ring portion are formed as a double-layered folding material. In particular, the doubling has a greater axial material thickness than the flange collar. Thus, the wall thickness of the bearing flange at more heavily loaded areas, namely in the transition region between the flange collar and bearing seat, reinforced and less loaded areas, namely the flange collar and the bearing seat, material can be saved on the bearing flange.

In a preferred structural embodiment, the first and the second ring portion extend in the overlapping region in the radial direction and contact directly in the axial direction. D. h., In the overlap region of the first and the second ring portion in the radial direction parallel to each other and / or are arranged overlapping in the axial direction. Due to the parallel and / or contacting arrangement of the two ring sections, the regional reinforcement of the bearing flange is implemented.

A preferred implementation of the invention provides that the first and the second ring portion together form a free inner diameter of the bearing flange. For this purpose, the first and the second ring portion on the same free inner diameter. For example, the free inner diameter is determined by a common deflection of the first and second ring portion. The deflection region is preferably formed by a folding of the two ring sections. In particular, the ring sections and the deflection region are U-shaped in cross-section. The common free inner diameter of the first and second annular portion is preferably formed smaller than the free inner diameter of the bearing seat, wherein the difference of the two inner diameter of the radial length of the axial stop corresponds.

In a preferred embodiment, the first ring portion is aligned radially in alignment with the radially extending flange collar. The first ring portion is thus formed as an extension portion of the flange collar, in particular with the same axial width or material thickness as the flange collar, so that the first ring portion and the flange collar together form the radially extending support plate having a free inner diameter than the circular receiving opening. However, it is also within the scope of the invention that z. B. the second ring portion is aligned radially aligned with the flange collar or the first and the second ring portion offset parallel to the radially extending flange collar.

Furthermore, it is preferred that the second ring portion extends perpendicular to the axially extending bearing seat. In this case, the second ring portion and the bearing seat, in cross-section along the axial course of the bearing flange contemplated, angled, z. B. at right angles, in particular L-shaped to each other. Preferably, the second ring portion has the same outer diameter as the bearing seat.

With regard to the production is preferred that the bearing flange is formed as a forming part. This embodiment has the advantage that the bearing flange can be produced economically in a mass production in the forming process, possibly by multi-stage forming. In addition, the forming process allows the bearing flange in a simple and fast way to manufacture as a single part, so that z. B. the assembly cost is reduced in a gear assembly. The bearing flange is produced for example by means of a deep-drawing process.

From the structural design is preferred that the outer ring is frictionally connected in the circumferential direction with the bearing flange, in particular with the bearing seat of the bearing flange. The outer ring is rotatably held in this way in the bearing seat. For example, the bearing seat is shrunk onto the outer ring, so that the bearing seat engages around the outer ring on the inside. Alternatively, z. B. the outer ring pressed into the flange collar or the flange collar pressed onto the outer ring. The outer ring and the bearing flange thus form a firmly connected component. In this way, a frictional support of the outer ring is secured to the bearing flange. At the same time the securing of the bearing flange and the outer ring allows a pre-assembly for the gear assembly.

Another object of the invention relates to a gear arrangement with the bearing assembly according to the preceding description.

In a preferred embodiment, the gear assembly has a bearing. The bearing comprises the outer ring, and optionally in addition an inner ring and between the outer ring and inner ring rolling rolling elements. The duplication forms an axial stop in the axial direction at least for a portion of the end face of the outer ring. Preferably, the bearing is designed as a ball bearing. It is further preferred that the gear arrangement comprises a gear shaft, wherein the gear shaft and the bearing together define the axis of rotation. The inner ring is rotatably connected to the transmission shaft. In addition, the gear arrangement preferably comprises a housing portion, wherein the flange collar at least in sections on a front side of the housing portion, which extends in a radial plane to the rotation axis, rests. Of the Housing section has a passage opening into which the bearing seat is inserted in the axial direction. By inserting the bearing seat in the passage opening of the bearing flange is arranged radially centered on the housing portion.

In particular, there is a transition or clearance fit between the passage opening and an outer lateral surface of the bearing seat. In the transition or clearance fit the smallest dimension of the passage opening is greater than or equal to the largest dimension of the bearing seat. Thus, the bearing seat can be used without much effort in the through hole and removed from the through hole.

In a preferred embodiment, the second ring section extends in the axial direction into the passage opening of the housing section.

The second ring portion in the passage opening and z. B. the radially aligned arrangement of the first ring portion with the flange collar allows a flat resting of the flange collar on the end face of the housing portion. The flat resting of the flange collar ensures a proper arrangement of the bearing so that possible constraining forces are avoided in the gear assembly by tilting.

A preferred structural implementation provides that the bearing flange is detachably connected to the housing portion. For this purpose, the flange collar is preferably provided with a plurality of spaced-apart and extending in the axial extension recesses. The recesses are preferably provided for receiving screws or other connecting means to releasably secure the flange collar with the end face of the housing portion. Thus, the bearing flange can be removed destructively from the housing section. This embodiment has the advantage that an exchange of individual components in the gear assembly, z. B. the camp is possible. The bearing flange is due to the attachment to the housing portion as the stationary component in tight fit with respect to the transmission shaft.

In a particularly preferred implementation of the invention, the gear arrangement is designed as a differential gear device for a motor vehicle. The differential gear device comprises a differential gear, wherein the differential gear is connectable to an input shaft which transmits the output from the engine of the motor vehicle drive torque to the differential gear. The differential gear device further includes a half shaft as the transmission shaft, which is operatively connected to the differential gear for transmitting the drive torque to a vehicle wheel. The half-wave is rotatably supported by the bearing, wherein the bearing is designed in particular as a support bearing. The differential gear device has the housing portion on which the flange collar is mounted, wherein the bearing seat carries the bearing.

Further features, advantages and effects of the invention will become apparent from the following description of preferred embodiments of the invention. Showing:

1 in cross-section a gear arrangement with a bearing assembly as an embodiment of the invention;

2 in a three-dimensional view of a bearing flange for the bearing assembly 1 ;

3 in a schematic diagram of the gear assembly designed as a differential gear device 1 ,

1 shows a gear arrangement 1 in a cross-sectional view as an embodiment of the invention. The gear arrangement 1 is z. B. intended for a motor vehicle.

The gear arrangement 1 includes a bearing assembly 2 , The bearing arrangement 2 has a bearing flange 3 and a warehouse 4 on, with the bearing an outer ring 4a , an inner ring 4b and between the outer ring 4a and the inner ring 4b Rolling elements rolling in a rolling element receiving space 4c having. The warehouse 4 is designed as a ball bearing and serves for the rotatable mounting of a gear shaft 5 the gear arrangement 1 , The transmission shaft 5 and the camp 4 together define an axis of rotation A in the axial direction.

The bearing flange 3 has a radially extending flange collar 3a , an axially extending bearing seat 3b and one between the flange collar 3a and the camp seat 3b arranged duplication 3c on. The flange collar 3a extends vertically and the bearing seat 3b coaxial to the axis of rotation A. The flange collar 3a has a free inner diameter I1, which forms a circular receiving opening. The bearing seat 3b is formed as a cylindrical sleeve and with the flange collar 3a about the duplication 3c integrally connected. The bearing flange 3 is formed as a sheet metal forming part.

The outer ring 4a is in the camp seat 3b pressed in the direction of rotation and lies with a front side in the axial direction of the doubling 4c positively. The duplication 3c thus forms an axial stop 6 for the outer ring 4a and scored in this way a precise positional fixation of the outer ring 4a in the bearing flange 3 ,

The duplication 3c includes a first and a second ring portion 7 . 8th , which are formed in a straight line in the cross section. The first and the second ring section 7 . 8th are superimposed and congruent in an axial overlap region. The first and the second ring section 7 . 8th are rectified in the radial direction, have the same radial length and contact each other in the axial direction. The duplication 3c has a greater axial material thickness than the flange collar. Both ring sections 7 . 8th have the same inner diameter and together form the smallest free inner diameter I1 of the bearing flange 3 , The free inner diameter I1 is determined by a deflection region, in which the one-piece ring sections 7 . 8th folded. The free inner diameter I2 of the bearing seat 3b is larger than the free inner diameter I1 of the first and second ring portions 7 . 8th formed, wherein the difference of the two free inner diameter I1, I2 the radial length of the axial stop 6 equivalent.

The first ring section 7 is radially aligned with the flange collar 3a arranged. The radially extending first ring section 7 and the radially extending flange collar 3a are parallel to the radially extending second ring portion 8th , wherein the second ring section 8th the first ring section 7 contacted directly in the axial direction.

The course of the duplication 3c is, from the cross section of 1 Seen from, transverse, in particular perpendicular, to the extension direction of the bearing seat 3b arranged. The course of the second ring section 8th forms in the cross section a right angle with the bearing seat 3b , Thus, the second ring section 8th and the camp seat 3b the same outer diameter and are arranged in cross-section L-shaped to each other.

The gear arrangement 1 has a housing section 9 with a passage opening 10 on. The bearing seat 3b is in the through hole 10 used. Between the passage opening 10 and an outer lateral surface of the bearing seat 3b is z. B. before a transition or clearance fit. The insertion and removal of the bearing seat 3 in and out of the passage opening 10 are connected in this way without a lot of effort.

The flange collar 3a lies on a front side of the housing section 9 , which extends in a radial plane perpendicular to the axis of rotation A, at. The flange collar 3a has a plurality of spaced-apart and extending in the axial extension recesses 11 on. The recesses 11 serve to carry out coupling elements such. B. screws around the bearing flange 3 on the housing section 9 to fix. By attaching the bearing flange 3 on the housing section 9 and the fastening of the inner ring 4b on the gear shaft 5 is between the housing section 9 and the gear shaft 5 a stored relative movement possible.

The second ring section 8th is in the through hole 10 of the housing section 9 introduced and closes with a to the first ring section 7 facing side surface flush with the end face of the housing portion 9 from. Due to the flush termination and the radially aligned arrangement of the flange collar 3a and the first ring section 7 is a direct contact between the flange collar 3a and the front side of the housing section 9 implemented. The flange collar 3a lies flat on the front side of the housing section 9 on. The second ring section 8th in the passage opening 10 defines with its axial width the axial arrangement of the outer ring 4a and therefore of the camp 4 in the passage opening 10 firmly.

2 shows in a three-dimensional view of the bearing flange 3 with the flange collar 3a , the camp seat 3b and the duplication 3c , The flange collar 3a points for the fixation of the bearing flange 3 on the housing section 9 three recesses 11 on. The flange collar 3a includes three corner regions in this embodiment 15 which extend in the radial direction away from the axis of rotation A and in each of which a recess 11 is arranged in the axial direction. The corner areas 15 are arranged in a triangular shape. As an exemplary alternative can be provided that the flange collar 3a is annular, in which the plurality of spaced-apart and extending in the axial direction recesses 11 are arranged.

The bearing seat 3b extends coaxially with the axis of rotation A and is perpendicular to the radially extending flange collar 3a arranged. The bearing seat 3b is on the flange collar 3a centered, so that the axis of rotation A through the radial center of the flange collar 3a runs.

3 shows the gear arrangement 1 designed as a differential gear device 12 as a possible application of the gear arrangement 1 , The differential gear device 12 includes a differential gear (not shown), for example, an axle differential, wherein the differential gear with an input shaft 13 and a half-wave as the transmission shaft 5 is coupled. The differential transmits this to the input shaft 13 applied driving torque on the gear shaft 5 , where the transmission shaft 5 in the direction of a vehicle wheel 14 is directed and the drive torque at least partially to the vehicle 14 forwarded directly or indirectly. The transmission shaft 5 is about the camp 4 rotatably mounted, wherein the bearing seat 3b the camp carries. The differential gear device 12 further comprises the housing section 9 at which the flange collar 3a is attached.

LIST OF REFERENCE NUMBERS

1

 transmission assembly

2

 bearing arrangement

3

 Lagerflansch

3a

 flange collar

3b

 bearing seat

3c

 duplication

4

 camp

4a

 outer ring

4b

 inner ring

4c

 rolling elements

5

 gear shaft

6

 Axial stop

7

 First ring section

8th

 Second ring section

9

 housing section

10

 Through opening

11

 recess

12

 Differential gear device

13

 input shaft

14

 vehicle

15

 corner

A

 axis of rotation

I1

 Free inner diameter of the flange collar

I2

 Free inner diameter of the bearing seat

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 102006034921 A1 [0003]

Claims (10)

Bearing arrangement ( 2 ) with a bearing flange ( 3 ), the bearing flange ( 3 ) a radially extending flange collar ( 3a ) and an axially extending bearing seat ( 3b ), with an outer ring ( 4a ) for a warehouse ( 4 ), wherein the outer ring ( 4a ) in the bearing seat ( 3b ) of the bearing flange ( 3 ), characterized in that the bearing flange ( 3 ) a duplication ( 3c ), which the flange collar ( 3a ) and the bearing seat ( 3b ) integrally connects and the outer ring ( 4a ) secures positively in an axial direction. Bearing arrangement ( 2 ) according to claim 1, characterized in that the duplication ( 3c ) a first and a second ring section ( 7 . 8th ), wherein the first and the second ring portion ( 7 . 8th ) extend radially in an overlap region and contact directly in the axial direction. Bearing arrangement ( 2 ) according to claim 2, characterized in that the first ring section ( 7 ) radially aligned with the radially extending flange collar ( 3a ) and the second ring section ( 8th ) perpendicular to the axially extending bearing seat ( 3b ) are arranged. Bearing arrangement ( 2 ) according to one of the preceding claims, characterized in that the bearing flange ( 3a ) is formed as a forming part. Bearing arrangement ( 2 ) according to one of the preceding claims, characterized in that the outer ring ( 4a ) with the bearing flange ( 3 ) is frictionally connected in the direction of rotation. Gear arrangement ( 1 ) with the bearing arrangement ( 2 ) according to any one of the preceding claims. Gear arrangement ( 1 ) according to claim 6, characterized in that the gear arrangement ( 1 ) a warehouse ( 4 ), the bearing ( 4 ) an outer ring ( 4a ) and an inner ring ( 4b ) and between the outer ring ( 4a ) and inner ring ( 4b ) rolling rolling elements ( 4c ), with a transmission shaft ( 5 ), where the transmission shaft ( 5 ), the warehouse ( 4 ) and the bearing flange ( 3 ) together define an axis of rotation (A) in the axial direction and wherein the inner ring ( 4b ) with the gear shaft ( 5 ) is rotatably connected, with a housing portion ( 9 ), wherein the flange collar ( 3a ) at least in sections on an end face of the housing section ( 9 ), wherein the housing section ( 9 ) a passage opening ( 10 ), in which the bearing seat ( 3b ) is used. Gear arrangement ( 1 ) according to claim 7, characterized in that the second ring section ( 8th ) in the axial direction in the passage opening ( 10 ) of the housing section ( 9 ). Gear arrangement ( 1 ) according to one of the preceding claims 6 to 8, characterized in that the bearing flange ( 3 ) detachable with the housing section ( 9 ) connected is. Gear arrangement ( 1 ) according to one of the preceding claims 6 to 9, characterized in that the gear arrangement ( 1 ) as a differential gear device ( 12 ) is designed for a motor vehicle, with a differential gear, wherein the differential gear with an input shaft ( 13 ), which transmits the drive torque originating from the engine of the motor vehicle to the differential gear, with a half-wave as the transmission shaft ( 5 ), wherein the half-wave with the differential gear for transmitting the drive torque to a vehicle wheel ( 14 ), the half-wave being transmitted through the bearing ( 4 ) is rotatably mounted, and with the housing portion ( 9 ), on which the flange collar ( 3a ), wherein the bearing seat ( 3b ) the warehouse ( 4 ) wearing.

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