DE102017005503A1 - Rolling and motor vehicle - Google Patents

Abstract

A rolling bearing (2, 2 ', 2' ', 2' '') is described with an inner shell (8), an outer shell (4) and rolling elements (10) arranged therebetween, the outer shell (4) being constructed in several parts and one Outer ring (16) and an inner ring (18), wherein between the outer ring (16) and the inner ring (18) a viscoelastic damping element (20) is arranged.

Description

Described are a rolling bearing with an inner shell and an outer shell and arranged therebetween rolling elements and a motor vehicle.

Rolling and motor vehicles of the type mentioned are known in the art and are widely used. If two components with low friction and low wear have to be moved against each other in a device or machine, a kind of storage is needed. In the case of relatively rotating components this is usually accomplished by suitable forms of bearings.

It is known that with mutually moving, in particular against each other rotating components vibrations can occur, which can lead to material fatigue or damage on the one hand, on the other hand to noise. For this reason, it is known to provide rolling bearings with damping elements to eliminate the vibrations.

A disadvantage of the known damped bearings is that the provision of damping elements requires a lot of space.

From the US 5,816,712 a radial bearing is known which has a first cartridge and a second cartridge. Both cartridges are equipped with elastomeric bands and air spaces to reduce vibration. This rolling bearing is space-consuming.

Thus, the task of further developing rolling bearings of the type mentioned in that effective vibration damping with less space is possible.

The object is achieved by a roller bearing according to claim 1 and by a motor vehicle according to the independent claim 10. Further refinements and concretions are the subject of the dependent claims.

Hereinafter, a rolling bearing having an inner shell, an outer shell and arranged therebetween rolling elements will be described. The inner shell is usually fixed to a first component, the outer shell to a second component, wherein the first component and the second component to be rotatable relative to each other. As rolling elements, various structures can be used, for example, balls, cylinders, needles, cones, etc.

It is provided that the outer shell is constructed in several parts and has an outer ring and an inner ring, wherein between the outer ring and inner ring, a viscoelastic damping element is arranged.

In this way, the viscoelastic Dämfungselement be part of the outer shell, which must thereby fail or only slightly larger than outer shells of conventional bearings. The damping takes place directly in the bearing, so that the outer shell is also the damping element.

In a first further embodiment, it can be provided that the outer ring, inner ring and viscoelastic damping element form a floating bearing. In this way, the radial bearing can simultaneously form a degree of freedom in the axial direction, which can serve to damp axial vibrations.

A concretization of this embodiment may provide that outer ring and inner ring have cylindrical contact surfaces to the viscoelastic damping element, wherein the contact surfaces each extend in the axial direction from a first end face of the rolling bearing to an opposite second end face of the rolling bearing. Thus, a relative axial movement of the outer ring and inner ring to each other is not rigidly blocked, but limited to the viscoelastic Dämfungselement.

In an alternative embodiment it can be provided that outer ring, inner ring and visco-elastic damping element form a fixed bearing. In this way, the radial bearing can absorb axial forces.

A concretization of this embodiment may provide that the outer ring and the inner ring have cylindrical contact surfaces to the viscoelastic damping element, which are limited in the axial direction on a first end side of the rolling bearing and on an opposite second end side of the rolling bearing by a respective radial flange on the outer ring.

An alternative concretization of this embodiment may provide that the outer ring and the inner ring cylindrical contact surfaces to the viscoelastic damping element, which are limited in the axial direction on a first end side of the rolling bearing and on an opposite second end side of the rolling bearing by a respective radial inner ring on the outer ring.

In another alternative embodiment it can be provided that outer ring, inner ring and visco-elastic damping element form a floating bearing. This way you can an axial degree of freedom can be achieved, which is limited in one direction.

A concretization of this embodiment may provide that the outer ring and the inner ring have cylindrical contact surfaces to the viscoelastic damping element, which are limited in the axial direction on an end face of the rolling bearing by a radial flange on the outer ring.

A further embodiment can provide that the viscoelastic damping element is designed in the shape of a cylinder jacket or tubular. Corresponding tubular damping elements can be produced inexpensively.

A first independent article relates to a motor vehicle with at least one rolling bearing of the type described above.

Further advantages, features and details will become apparent from the following description in which - where appropriate, with reference to the drawings - at least one embodiment is described in detail. In a schematic sectional view:

1 a rolling bearing in a first embodiment in an embodiment as a floating bearing;

2 a rolling bearing in a second embodiment in a configuration as a fixed bearing;

3 a rolling bearing in a third embodiment in an alternative embodiment as a fixed bearing, and

4 a rolling bearing in a fourth embodiment in an embodiment as a floating bearing.

The same or equivalent components are provided in the following embodiments for better readability with the same reference numerals.

1 shows a rolling bearing 2 in a first embodiment in an embodiment as a floating bearing.

The rolling bearing 2 has an outer shell 4 on, on a component 6 is arranged. The component 6 may be part of an electric motor, which is installed in a motor vehicle.

Furthermore, an inner shell 8th intended. Between outer shell 4 and inner shell 8th are balls 10 arranged, of which in the present case only one is visible. The balls 10 run on appropriate careers 12 . 14 from outer shell 4 and inner shell 8th ,

The outer shell 4 is composed of several parts. The outer shell 4 has an outer ring 16 , an inner ring 18 and an intermediate viscoelastic damping element 20 on. The viscoelastic damping element 20 dampens vibrations occurring between the components to which the rolling bearing 2 is fixed and thus prevents noise.

The rolling bearing 2 is designed as a floating bearing. outer shell 4 and inner shell 8th have cylindrical contact surfaces 22 . 24 to visco-elastic damping element 20 auf, which in the present embodiment of a first end face 26 to a second end face 28 extend. Thus, a relative movement between the outer shell 4 and inner shell 8th only by the counterforce of the visco-elastic damping element 20 limited.

2 shows a rolling bearing 2 ' in a second embodiment in an embodiment as a fixed bearing.

The rolling bearing 2 ' has an outer shell 4 on, on a component 6 is arranged. The component 6 may be part of an electric motor, which is installed in a motor vehicle.

Furthermore, an inner shell 8th intended. Between outer shell 4 and inner shell 8th are balls 10 arranged, of which in the present case only one is visible. The balls 10 run on appropriate careers 12 . 14 from outer shell 4 and inner shell 8th ,

The outer shell 4 is composed of several parts. The outer shell 4 has an outer ring 16 , an inner ring 18 and an intermediate viscoelastic damping element 20 on. The viscoelastic damping element 20 dampens vibrations occurring between the components to which the rolling bearing 2 ' is fixed and thus prevents noise.

The rolling bearing 2 ' is designed as a warehouse. The component 6 has a stop 30 on, on which the outer shell 4 on the first front side 26 is applied. On the second front side 28 is a circlip 32 intended.

The outer ring 16 points to the two front sides 26 . 28 radially extending flanges 34 . 36 on. The inner ring 18 indicates an increase 38 on, on the flanges 34 . 36 strikes. To ensure a radial compensating movement are between the flanges 34 . 36 air gaps 40 . 42 intended.

3 shows a rolling bearing 2 '' in a third embodiment in an alternative embodiment as a fixed bearing.

The rolling bearing 2 '' has an outer shell 4 on, on a component 6 is arranged. The component 6 may be part of an electric motor, which is installed in a motor vehicle.

Furthermore, an inner shell 8th intended. Between outer shell 4 and inner shell 8th are balls 10 arranged, of which in the present case only one is visible. The balls 10 run on appropriate careers 12 . 14 from outer shell 4 and inner shell 8th ,

The outer shell 4 is composed of several parts. The outer shell 4 has an outer ring 16 , an inner ring 18 and an intermediate viscoelastic damping element 20 on. The viscoelastic damping element 20 dampens vibrations occurring between the components to which the rolling bearing 2 '' is fixed and thus prevents noise.

The rolling bearing 2 '' is designed as a warehouse. The component 6 has a stop 30 on, on which the outer shell 4 on the first front side 26 is applied. On the second front side 28 is a circlip 32 intended.

The inner ring 18 points to the two front sides 26 . 28 radially extending flanges 34 . 36 on. To ensure a radial compensating movement are between the flanges 34 . 36 air gaps 40 . 42 intended.

4 shows a rolling bearing 2 ''' in a fourth embodiment in an embodiment as a floating bearing.

The rolling bearing 2 ''' has an outer shell 4 on, on a component 6 is arranged. The component 6 may be part of an electric motor, which is installed in a motor vehicle.

Furthermore, an inner shell 8th intended. Between outer shell 4 and inner shell 8th are balls 10 arranged, of which in the present case only one is visible. The balls 10 run on appropriate careers 12 . 14 from outer shell 4 and inner shell 8th ,

The outer shell 4 is composed of several parts. The outer shell 4 has an outer ring 16 , an inner ring 18 and an intermediate viscoelastic damping element 20 on. The viscoelastic damping element 20 dampens vibrations occurring between the components to which the rolling bearing 2 '' is fixed and thus prevents noise.

The rolling bearing 2 ''' is designed as a floating camp. The component 6 has a stop 30 on, on which the outer shell 4 on the first front side 26 is applied. On the inner ring is a radially extending flange 36 intended.

Although the invention has been further illustrated and explained in detail by way of preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention. It is therefore clear that a multitude of possible variations exists. It is also to be understood that exemplified embodiments are really only examples that are not to be construed in any way as limiting the scope, applicability, or configuration of the invention. Rather, the foregoing description and description enable the skilled artisan to practice the exemplary embodiments, and those of skill in the knowledge of the disclosed inventive concept may make various changes, for example, to the function or arrangement of particular elements recited in an exemplary embodiment. without departing from the scope defined by the claims and their legal equivalents, such as further explanation in the description.

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

• US 5816712 [0005]

Claims (10)

Rolling bearing with an inner shell ( 8th ), an outer shell ( 4 ) and arranged therebetween rolling elements ( 10 ), characterized in that the outer shell ( 4 ) is constructed in several parts and an outer ring ( 16 ) and an inner ring ( 18 ), wherein between outer ring ( 16 ) and inner ring ( 18 ) a viscoelastic damping element ( 20 ) is arranged. Rolling bearing according to claim 1, characterized in that the outer ring ( 16 ), Inner ring ( 18 ) and viscoelastic damping element ( 20 ) a floating bearing ( 2 ) form. Rolling bearing according to claim 2, characterized in that the outer ring ( 16 ) and the inner ring ( 18 ) cylindrical contact surfaces ( 22 . 24 ) to the viscoelastic damping element ( 20 ), each in the axial direction from a first end face ( 26 ) of the rolling bearing ( 2 ) to an opposite second end face ( 28 ) of the rolling bearing ( 2 ). Rolling bearing according to claim 1, characterized in that the outer ring ( 16 ), Inner ring ( 18 ) and viscoelastic damping element ( 20 ) a fixed warehouse ( 2 ' . 2 '' ) form. Rolling bearing according to claim 4, characterized in that the outer ring ( 16 ) and the inner ring ( 18 ) cylindrical contact surfaces ( 22 . 24 ) to the viscoelastic damping element ( 20 ), which in the axial direction on a first end face ( 26 ) of the rolling bearing ( 2 ' ) and an opposite second end face ( 28 ) of the rolling bearing ( 2 ' ) by a respective radial flange ( 34 . 36 ) on the outer ring ( 16 ) are limited. Rolling bearing according to claim 4, characterized in that the outer ring ( 16 ) and the inner ring ( 18 ) cylindrical contact surfaces ( 22 . 24 ) to the viscoelastic damping element ( 20 ), which in the axial direction on a first end face ( 26 ) of the rolling bearing ( 2 '' ) and an opposite second end face ( 26 ) of the rolling bearing ( 2 '' ) by a respective radial flange ( 34 . 36 ) on the inner ring ( 18 ) are limited. Rolling bearing according to claim 1, characterized in that the outer ring ( 16 ), Inner ring ( 18 ) and viscoelastic damping element ( 20 ) a floating warehouse ( 2 ''' ) form. Rolling bearing according to claim 7, characterized in that the outer ring ( 16 ) and the inner ring ( 18 ) cylindrical contact surfaces ( 22 . 24 ) to the viscoelastic damping element ( 20 ), which in the axial direction on a front side ( 28 ) of the rolling bearing ( 2 ''' ) by a radial flange ( 36 ) on the outer ring ( 16 ) are limited. Rolling bearing according to one of the preceding claims, characterized in that the viscoelastic damping element ( 20 ) is formed cylindrical-shaped or tubular. Motor vehicle with at least one rolling bearing ( 2 . 2 ' . 2 '' . 2 ''' ) according to any one of the preceding claims.

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