Method for producing a steering wheel
AssigneeHolzindustrie Bruchsal GmbH & Co. KG
InventorsPeter Mertes, Andreas Kellermann
Life of this patent
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Abstract
A method is described for producing a motor vehicle steering wheel that is provided with a cover. With this method, the ring and cover are manufactured separately and are subsequently joined. In order to produce the cover, two unfinished parts are initially produced, into which a groove is milled. Subsequently, a decorative layer is applied to the unfinished part. A layer of lacquer is applied to the unfinished parts that are joined to form a tubular ring segment. During the following operational step, the tubular ring segment is divided into two halves, which are joined with the ring and thus form the cover.
Claims4
A method for producing a steering wheel comprising a ring for a motor vehicle, for which the ring has at least one segment with a cover, said method comprising, the following processing steps:
- producing the ring with at least one region of reduced circular cross section for accommodating the cover;
- manufacturing two identical unfinished parts that correspond to an arc length of the aforementioned region, which parts have a semi-circular cross section with a diameter that is smaller than the diameter of the circular cross section;
- milling in of respectively one channel-shaped groove, starting from the level inside surfaces of the unfinished parts and corresponding to the form of the region with reduced circular cross section;
- applying a decorative layer onto the outside surfaces of the unfinished parts;
- joining the two unfinished parts along their inside surfaces to form a tubular ring segment;
- applying a layer of lacquer over the decorative layer of the tubular ring segment;
- separating the tubular ring segment in a longitudinal direction into two equal halves;
- applying an adhesive to the groove, as well as to the parting planes of the halves;
- pressing the two halves onto the ring, forming the cover, in the region of reduced cross section.
Dependencies are inferred from the claim text.