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DE-102009004744-B4 - Bearing arrangement for an adjustment device in a motor vehicle

DE102009004744B4DE 102009004744 B4DE102009004744 B4DE 102009004744B4DE-102009004744-B4

Abstract

Bearing arrangement for an adjustment device in a motor vehicle, with a base part which has at least one bearing recess, and with a bearing element located within the bearing recess, wherein the bearing recess and the bearing element have different cross-sectional shapes, and wherein the diameter of the bearing element has a section-wise oversize compared to the diameter of the bearing recess, characterized by that either the bearing recess (2a, 2b, 2c) in the base part (1) has a non-circular cross-section and the bearing element (4, 6) has a circular cross-section, or the bearing recess in the base part has a circular cross-section and the bearing element has a non-circular cross-section, and that of the components base part (1) and bearing element (4, 6), the component (1), which has the non-circular cross-section, is made of a softer material than the component (4, 6) with the circular cross-section.

Inventors

  • Rainer Steiling
  • Benjamin Schlanzke
  • Daniel Kebekus

Assignees

  • KOSTAL AUTOMOBIL ELEKTRIK GMBH & CO. KG

Dates

Publication Date
20260513
Application Date
20090115

Claims (7)

  1. Bearing arrangement for an adjustment device in a motor vehicle, comprising a base part having at least one bearing recess, and a bearing element mounted within the bearing recess, wherein the bearing recess and the bearing element have different cross-sectional shapes, and wherein the diameter of the bearing element has a section-wise interference with the diameter of the bearing recess, characterized in that either the bearing recess (2a, 2b, 2c) in the base part (1) has a non-circular cross-section and the bearing element (4, 6) has a circular cross-section, or the bearing recess in the base part has a circular cross-section and the bearing element has a non-circular cross-section, and that of the components base part (1) and bearing element (4, 6), the component (1) having the non-circular cross-section is made of a softer material than the component (4, 6) with the circular cross-section.
  2. Storage arrangement according to Claim 1 , characterized in that the base part (1) and the bearing element (4, 6) are produced by an injection molding or stamping process and that the final cross-sectional shapes of the bearing recess (2a, 2b, 2c) of the base part (1) and the bearing element (4, 6) are determined by the injection molding or stamping process.
  3. Storage arrangement according to Claim 1 , characterized in that the bearing element (6) engages in the bearing recess (2c) or the bearing element (4) extends through the bearing recess (2a, 2b).
  4. Storage arrangement according to Claim 3 , characterized in that the bearing recess (2a, 2b) is designed as a breakthrough in the base part (1).
  5. Storage arrangement according to Claim 3 , characterized in that the base part (1) has at least one bearing bushing (10a, 10b) in which the bearing recess (2c) is designed as a blind bore.
  6. Storage arrangement according to Claim 1 , characterized in that the base part (1) forms a bearing cage.
  7. Storage arrangement according to Claim 1 , characterized in that the bearing arrangement supports a switching lever (11) for an electrical switch.

Description

The invention relates to a bearing arrangement for an adjustment device in a motor vehicle, comprising a base part which has at least one bearing recess and a bearing element mounted within the bearing recess, wherein the bearing recess and the bearing element have different cross-sectional shapes, and wherein the diameter of the bearing element has a section-wise excess compared to the diameter of the bearing recess. Such a storage arrangement is described in the German disclosure document. DE 103 29 237 A1 The bearing arrangement described in this document is known. In this arrangement, a bearing element extends through a bearing recess in the base part, the cross-section of which is circular or disk-shaped and accordingly has a circular edge contour. The base part has a bearing recess that is initially also circular and whose diameter is larger than the diameter of the bearing element. To ensure that the bearing element can be held without play in the bearing recess, at least one deformation area is provided at the edge of the bearing recess. Due to plastic deformation of the base part, this area projects radially inwards and acts as a radial support for the bearing element. To create these deformation areas, each deformation area on the base part is assigned a weakening area, by means of which the deformation areas are formed, for example by material displacement. The resulting deformation of the bearing recess compensates for the bearing play to such an extent that the bearing element is mounted in the recess without rattling. The deformation of the areas can be carried out either before or after the bearing element is inserted into the bearing recess. If the bearing recess is formed before the axial insertion of the bearing element, the deformation areas are partially deformed radially outwards again when the bearing element is inserted into the recess, so that a backlash-free fit of the bearing element in the recess is automatically achieved, although a residual elastic preload remains. The bearing recess is thus formed in such a way that the diameter of the bearing element has an interference with the diameter of the bearing recess in the deformation areas. A disadvantage of this method is that deforming the bearing recess requires at least one additional manufacturing step to create the deformation areas. Furthermore, a special tool suitable for this purpose is required. Both measures result in additional costs. The task therefore arose to produce a storage arrangement in accordance with the general concept in a simpler and more cost-effective manner. This problem is solved according to the invention by either having a non-circular cross-section in the base part and a circular cross-section in the bearing element, or having a circular cross-section in the base part and a non-circular cross-section in the bearing element, and by having the component with the non-circular cross-section made of a softer material than the component with the circular cross-section. In this context, the term "soft material" means that the material is easily deformable and, according to its colloquial meaning, refers to both elastic and plastic deformability of the material. As already explained, it is generally known to clamp a circular bearing element at a few points along its outer contour. However, this has not yet been done, for example according to the DE 103 29 237 A1 , a subsequent deformation of a bearing recess that was initially formed too wide is provided for, or the insertion of additional bearing components into a circular bearing recess, as for example in the German patent specification DE 28 38 768 C3 in the form of a floating bushing. Such solutions are complex to install and therefore also expensive. Instead of subsequently modifying an originally circular cross-sectional shape as before, the invention now provides for forming a corresponding cross-sectional shape directly during the manufacture of the base part or the bearing element. For this purpose, only the shape of the stamping or injection mold required for production needs to be designed accordingly. This eliminates the manufacturing step for forming deformation areas, as well as the tooling required for this purpose and the production and assembly of additional bearing components. In contrast to those from the DE 103 29 237 A1 In known designs, it may also be provided that the bearing recess has a circular cross-section and the bearing element has a cross-sectional shape that deviates from the circular shape. Here too, it is intended that the component with the non-circular cross-sectional shape is made of a softer material than the component with the circular cross-sectional shape. Advantageous embodiments and further developments of the invention are shown in the exemplary embodiment described below with reference to the drawing. The drawing shows: 1 a bearing arrangement according to the invention, 2 a bearing cage as a single component, 3 an