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1. (WO2018145868) METHOD AND TOOL FOR INTRODUCING ELECTRIC CONDUCTORS INTO AN OVERMOULDING OF A STEERING WHEEL FRAME

Pub. No.:    WO/2018/145868    International Application No.:    PCT/EP2018/051079
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Thu Jan 18 00:59:59 CET 2018
IPC: B62D 1/06
Applicants: TRW AUTOMOTIVE SAFETY SYSTEMS GMBH
Inventors: LAMMERS, Alexander
LIND, Thomas
Title: METHOD AND TOOL FOR INTRODUCING ELECTRIC CONDUCTORS INTO AN OVERMOULDING OF A STEERING WHEEL FRAME
Abstract:
Disclosed is a method for introducing electric conductors (22) into an overmoulding (20) of a steering wheel frame (18). The electric conductors (22) are used in particular for heating and shielding purposes and for sensing contact on a steering wheel. Said method comprises the following steps: in a first method step, introducing at least one cut (26) into the overmoulding (20) using a cutting tool (34); and, in a second method step, simultaneously introducing both a first layer (22a) of an electric conductor (22) and a second layer (22b) of an electric conductor (22) into the cut (26) that has been created. The first layer (22a) preferably forms both a heating layer for heating the steering wheel and a guard layer which, together with the second layer (22b) acting as a sensor layer, allows the capacitive sensing of hand contact.