DE102004007570B4 - end shield - Google Patents

Abstract

end shield (10) with a plate-like portion (13) and at least a hollow cylinder-like portion (11, 12) for receiving a Bearing (20), wherein one of the sub-areas (11, 12, 13) formed Unit in one piece of a laminated sheet with at least one damping intermediate layer (16) and wherein in at least one of the subareas (11, 12, 13) at least one, on one side of the portion (11, 12, 13) projecting threaded bore (18) is formed.

Description

The The invention relates to a bearing plate with a plate-like portion and at least one hollow cylinder-like portion for receiving a Camp.

For example, from the DE 298 09 031 U1 is known a bearing mount, which is made of a sheet metal blank, inter alia, by deep drawing and having a plate-like portion and two hollow-cylindrical portions for receiving two bearings. In this case, the two hollow-cylinder-like subareas are shaped into one another with a reduced wall height into one another in a region of their smallest outer jacket spacing relative to each other for the closest possible approximation of the two rolling bearings.

A The object of the invention is to provide a bearing plate with a plate-like Part area and with at least one hollow cylinder-like portion for To create a bearing to create, with the bearing plate at simple and cheaper production possibility has a good noise attenuation.

The The object is achieved by the The subject of claim 1 solved. Advantageous embodiments are described in the subclaims.

According to claim 1 is at a bearing plate with a plate-like portion and with at least one hollow cylindrical portion for receiving of a bearing integrally formed by a unit of the units a laminated sheet with at least one damping intermediate layer produced.

By The use of the laminated sheet is a simple and inexpensive production of the bearing plate, also referred to as bearing mount or bearing carrier, from a board, in particular by punching and deep drawing by means already existing tools possible, being dampened by the Intermediate layer of the laminated sheet simultaneously achieved a good noise attenuation becomes. The invention is based on the knowledge that the laminated sheet, especially at the transition areas the subregions as well as threaded Eineinungen, in so far not considered possible Way, the very strong mechanical deformations without loss of his structural integrity, while maintaining its noise reduction properties and a high geometric precision for receiving the bearing, maintains.

As a laminated sheet, for example, the structure-borne sound-absorbing composite material BONDAL ^® ThyssenKrupp Stahl is known. Furthermore, the term laminated sheet is used in an equivalent manner for the designation laminated sheet.

Especially when using a bearing support made of the laminated sheet with two hollow cylindrical sections for two bearings in a transmission of a Motor vehicle, in particular a passenger vehicle, for storage two parallel shafts of the transmission becomes one of the transmission outgoing noise significantly reduced, which in particular the motor vehicle manufacturer in his quest, the noise to a predeterminable degree reduce, supports becomes.

In Another advantageous application is a bearing cap of a Electric motor from the laminated sheet with a hollow cylinder-like Part produced for receiving a rolling bearing. In order to are noise peaks, as for example when exciting self-resonances of the electric motor arise, dampened. A typical field of application are electric motors in automobiles, reach high speeds from zero within a short period of time.

Further Advantages, features and details of the invention will become apparent the embodiment of the invention described below based on the figures. Showing:

1 a top view of a bearing plate made of a laminated sheet with a plate-like and two hollow cylindrical portions,

2 a section along a line AA the 1 and

3 a section along a line BB of 1 ,

The 1 shows as an embodiment of the invention, a plan view of a bearing plate 10 , which is a plate-like part 13 as well as two hollow cylindrical parts 11 and 12 for picking up two rolling bearings 20 having. The rolling bearings 20 each include an inner ring 22 , an outer ring 26 and between the rings 22 and 26 arranged spherical rolling elements 24 , As in particular from the 2 shows is in an area between the two bearings 20 a wall height of the two hollow cylindrical portions 11 and 12 reduced almost to zero, so that between the two rolling bearings 20 only one at the bottom of the bearing plate 10 arranged web remains. As in particular from the 3 shows, starting from the aforementioned bridge, the wall heights of both hollow cylindrical Teilberei che 11 and 12 until reaching the plate-like area 13 steadily larger, so that in the region of the smallest outer shell distance of the two hollow cylinder-like sections 11 and 12 these are designed to merge into one another with a reduced wall height.

Here is the end shield 10 made of one piece of a laminated sheet essentially by deep drawing and stamping. The laminated sheet comprises a first steel sheet layer 15 , a second sheet steel layer 17 and one between the two steel sheet layers 15 and 17 arranged, damping intermediate layer 16 from a plastic. In a preferred embodiment, the two steel sheet layers 15 and 17 each have a thickness of about 0.6 mm and the intermediate layer has a thickness of about 0.05 mm. Furthermore, in the plate-like portion 13 of the end shield 10 five on one side of the plate-like portion 13 protruding threaded holes 18 formed.

Furthermore, a transition region between the plate-like portion 13 and the two hollow cylindrical portions 11 and 12 so plastically deformed that it is in an annular shoulder of the outer rings 26 the rolling bearing 20 engages and thus the rolling bearings 20 fixed in the axial direction.

10

end shield

11 12

hollow cylinder-like subregion

13

plate-like subregion

15 17

Steel sheet layer

16

interlayer

18

threaded hole

20

roller bearing

22

inner ring

24

rolling elements

26

outer ring

Claims (9)

End shield ( 10 ) with a plate-like subregion ( 13 ) and with at least one hollow cylindrical part ( 11 . 12 ) for picking up a warehouse ( 20 ), one of the subregions ( 11 . 12 . 13 ) unit formed in one piece from a laminated sheet with at least one damping intermediate layer ( 16 ) and wherein in at least one of the subregions ( 11 . 12 . 13 ) at least one, on one side of the subregion ( 11 . 12 . 13 ) projecting threaded hole ( 18 ) is formed. End shield ( 10 ) according to claim 1, wherein the hollow cylindrical portion ( 11 . 12 ) is made by a deep drawing process. End shield ( 10 ) according to one of claims 1 or 2, wherein the bearing ( 20 ) a rolling bearing ( 20 ). End shield ( 10 ) according to one of claims 1 to 3, wherein the end shield ( 10 ) two closely adjacent arranged hollow cylindrical portions ( 11 . 12 ). End shield ( 10 ) according to claim 4, wherein in the region of the smallest outer jacket spacing of both hollow-cylinder-like subregions ( 11 . 12 ) These are formed with a reduced wall height merging into each other. End shield ( 10 ) according to one of claims 1 to 5, wherein the intermediate layer ( 16 ) comprises a plastic. End shield ( 10 ) according to one of claims 1 to 6, wherein the intermediate layer ( 16 ) has a thickness in the range of 0.02 to 0.07 mm. End shield ( 10 ) according to one of claims 1 to 7, wherein the intermediate layer ( 16 ) between two sheet metal layers ( 15 . 17 ) is arranged. End shield ( 10 ) according to claim 8, wherein at least one of the sheet metal layers ( 15 . 17 ) has a thickness in the range of 0.3 to 1.3 mm.