DE102018125199B4 - Multi-piece bush bearing - Google Patents

Abstract

Multi-part bush bearing with an outer bush part (3) and an inner bush part (1) and a damping element (5, 5.1, 5.2, 5.3, 5.4) arranged between the outer (3) and inner (1) bush part, the inner bush part (1) being radial at least one groove-like formation (2) is formed outwards to form at least one cavity (4) between the outside of the inner socket part (1) and the inside of the outer socket part (3), and in the at least one cavity (4) formed in this way at least one damping element (5 ) can be inserted, characterized in that the groove-like formation (2) on the inner socket part (1) rests directly on the inner wall of the outer socket part (3).

Description

The invention relates to a multi-part bush bearing, preferably for vibration and resonance damping when mounting vehicle components, with an outer bush part and an inner bush part and a damping element arranged between the outer and inner bush part.

Such bush bearings with damping elements are known in a variety of designs from the prior art. Such bearings usually consist of a tubular or cylindrical inner part made of metal and an outer sleeve surrounding the inner part. Elastomeric bearing bodies are usually arranged between the inner part and the outer sleeve. Bearing body and outer sleeve can be arranged concentrically or eccentrically to the inner part.

In the DE 40 40 426 C2 For example, a support bearing for the elastic connection of two vehicle parts is shown and described, in which an inner bearing part is connected to an outer bearing part that can be fastened to a vehicle part via vulcanized rubber bodies arranged in between.

the DE 27 03 038 A1 discloses a bearing element, in particular for mounting engine components, with an elastomer body arranged in an outer bearing bush and an inner bearing bush surrounded by the elastomer body and arranged axially parallel to the outer bearing bush. The position of the outer and inner bearing bushes relative to one another should be able to be fixed by means of a solid body molded into the elastomeric body.

In the U.S. 5,152,510A there is also shown and described a bearing made up of inner and outer sleeve members with an elastic body therebetween. The two sleeve parts should be connected in their position to one another via this elastic body.

The document CN 202 180 736 U discloses a bush bearing assembly for automobiles, which consists of an inner tube and an outer tube, wherein a vibration-reducing rubber body is sandwiched between the outer tube and the inner tube.

From the CN 106 183 771 A a bearing for motor vehicle engines is known in which a limiting sleeve is intended to prevent peripheral engine parts from being affected by excessive deflection of the elastic bearing.

the DE 695 12 608 T2 discloses an elastic mount for vibration damping with two concentrically spaced cylindrical bushings made of metal, between which an elastic material is firmly connected and pressed.

From the FR 1 031 726 A it is also known to insert elastic material firmly connected between spaced tubular parts.

EP 1 505 311 A1 discloses the subject-matter of the preamble of claim 1.

The object of the present invention is to also be able to dampen any resonance frequencies that may occur in a bush bearing of the type described at the beginning with good vibration damping properties.

With the invention, this object is achieved with a multi-part bush bearing according to claim 1.

A particularly preferred embodiment of the subject matter of the invention is that preferably three or more groove-like, radially outwardly formed formations are formed on the circumference distributed on the inner bushing part and three or more damping elements can be arranged radially distributed in the three or more cavities thus formed .

The invention proposes rubber as the material for the damping elements, which rubber is vulcanized to build up the bush bearing according to the invention before or during installation of the damping elements in the bearing.

Advantages, features and details of the inventive solution in a multi-part bush bearing result from the following description of an embodiment shown schematically in the figures of a drawing. The features and feature combinations described, as shown below in the drawing, and the features and feature combinations described with reference to the drawing can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the invention will.

• 1 ein zylindrisches Buchsenlager in perspektivischer Darstellung im Teilausschnitt vor dem endgültigen Zusammenfügen der Bauteile des Lagers und
• 2 das mehrteilige Buchsenlager nach der Erfindung perspektivisch im Teilausschnitt im zusammengebauten Zustand.

It shows:

• 1 a cylindrical bush bearing in a perspective view in partial section before the final assembly of the components of the bearing and
• 2 the multi-part bush bearing according to the invention in perspective in the partial section in the assembled state.

1 shows a part of an inner bush part 1 as part of a circular-cylindrical bush bearing. Groove-like formations 2 are formed on the inner socket part 1 distributed over its circumference; in the exemplary embodiment, these can be, for example, four such groove-like formations 2 distributed over the circumference.

The multi-part bush bearing also consists of an outer bush part 3 concentrically surrounding the inner bush part 1. When assembling (see, for example 2 ) of the inner bush part 1 with the outer bush part 3 to form the multi-part bush bearing, when the groove-like formations 2 are in contact with the inner wall of the outer bush part 3, cavities 4 are formed, in the exemplary embodiment with four groove-like formations 2 in the inner bush part 1, i.e. four cavities 4.

According to the invention, damping elements 5 are placed in these cavities 4 to dampen and prevent resonances from forming. These damping elements 5 are preferably formed from a solid body 5.1 and supporting bodies 5.2 and 5.3, respectively, which are formed protruding at the ends of this solid body 5.1. Supporting bodies 5.4 acting in the axial direction can be integrally formed on the ends of the damping element 5 or on its solid body 5.1 and are integrally connected to the supporting bodies 5.2 or 5.3 acting in the radial direction. However, these supporting bodies 5.4 acting in the axial direction can also be formed separately on the solid body 5.1.

In the assembled state of the multi-part bush bearing, the web of the groove-like formation 2 lies directly against the inner wall of the outer bush part 3 to form the cavities 5 or to define the correct distance between the inner bush part 1 and the outer bush part 3 .

With a bush bearing constructed in this way with the appropriate damping elements, any resonances that occur can be reduced by orders of magnitude of up to more than 50%.

Reference List

1

Inner socket part

2

Groove-like shape

3

Outer socket part

4

cavity

5

damping element

5.1

full body

5.2

supporting body

5.3

supporting body

5.4

Axial support body

6

damping element

Claims (4)

Multi-part bush bearing with an outer bush part (3) and an inner bush part (1) and a damping element (5, 5.1, 5.2, 5.3, 5.4) arranged between the outer (3) and inner (1) bush part, wherein on the inner bush part (1) radially outward at least one groove-like formation (2) to form at least one cavity (4) between the outside of the inner bushing part (1) and the inside of the outer bushing part (3) and in the at least one cavity (4) formed in this way at least one damping element ( 5) can be inserted, characterized in that the groove-like formation (2) on the inner socket part (1) bears directly against the inner wall of the outer socket part (3). bush bearing after claim 1 , characterized in that preferably three or more groove-like radially outward formations (2) are formed distributed on the circumference of the inner bushing part (1) and in the three or more cavities (4) formed in this way corresponding three or more damping elements (5) radially can be arranged distributed. Bush bearing according to one of Claims 1 or 2 , characterized in that the damping elements (5) consist of a solid body (5.1) and a supporting body (5.2, 5.3, 5.4) which is formed protruding from the solid body (5.1) at the end and is designed to elastically support the at least one damping element (5) in the radial and/or axial direction are formed on the inner and/or outer socket part (1, 3). Bush bearing according to one of the preceding claims, characterized in that the damping elements (5) can be formed from vulcanized rubber.

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