Apparatus and method for providing a horn contact mechanism
View Patent ↗Exemplary embodiments of the present invention relate to a steering wheel arrangement for motor vehicles having a steering wheel, an airbag module held at the steering wheel and movable in the direction of the axis of the steering wheel, and an electrical contact system arranged between the steering wheel and the airbag module for the actuation of an electrical functional unit, in particular of a vehicle horn by a relative movement between the steering wheel and the air-bag module taking place in the direction of the steering wheel axis, where-in the contact system includes elongate extended electrical conductors which are attached to mutually confronting sides of the steering wheel and of the airbag module or only to the steering wheel or to the airbag module and extend in such a way that conductors spaced apart in the direction of the steering wheel axis cross at least one contact position.
1. A steering wheel arrangement for motor vehicles having a steering wheel, the arrangement comprising:
an airbag module held at the steering wheel and movable in the direction of an axis of the steering wheel, and an electrical contact system arranged between the steering wheel and the airbag module for the actuation of a vehicle horn by a relative movement between the steering wheel and the airbag module taking place in the direction of the steering wheel axis, wherein the contact system includes elongated electrical conductors which are attached to mutually confronting sides of the steering wheel and of the airbag module and extend in such a way that the conductors are spaced apart in the direction of the steering wheel axis and cross at at least one contact position, wherein the conductors are disposed in a perpendicular relationship with respect to each other, wherein the airbag module includes two holders integrally formed and extending from the confronting side, each holder having an end remote from the confronting side and a slot extending from the end and comprising a form-fitted aperture retaining the elongated electrical conductor and an opening extending from the end for inserting the elongated electrical conductor into the form-fitted aperture in the direction of the axis, said holders being spaced apart and said elongate electrical conductor being disposed within the form-fitted apertures such that the contact position is between the holders.
2. The steering wheel arrangement in accordance with claim 1 , wherein
the conductor is attached to a component of the airbag module which is manufactured of an electrically insulating material.
3. The steering wheel arrangement in accordance with claim 2 , wherein
the steering wheel or the airbag module includes a contact bridge and at least one conductor is attached to the contact bridge.
4. The steering wheel arrangement in accordance with claim 3 , wherein at least one conductor is attached to a carrier for a gas generator of the airbag module.
5. The steering wheel arrangement in accordance with claim 4 , wherein at least one conductor is disposed in a plane extending perpendicular to the steering wheel axis.
6. The steering wheel arrangement in accordance with claim 5 , wherein at least one conductor is provided in the form of a contact wire.
7. The steering wheel arrangement in accordance with claim 2 , wherein the airbag module includes a support element underlying the contact point in a force-transmitting manner.
8. The steering wheel arrangement in accordance with claim 7 , wherein the contact section further comprises a contact layer, which is a noble metal.