Multifunctional pushbutton switch
AssigneeTRW Automotive Electronics & Components GmbH & Co. KG
InventorMarkus Altmann
Life of this patent
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Abstract
A multifunctional pushbutton switch for a vehicle steering wheel has a plurality of pushbutton switching units with pushbutton surfaces that are close to each other in a common operating surface. The switch has a common switch housing in which actuation tappets of the pushbutton switching units are movably guided. A cap is mounted onto the switch housing. The cap is made by means of a two-component injection-molding technique of a relatively rigid plastic frame with a cutout window whose shape and size correspond to the circumference of a pushbutton surface and of a silicone membrane stretched over the window.
Claims8
A multifunctional pushbutton switch comprising
- a plurality of pushbutton switching units having actuation tappets and pushbutton surfaces, said pushbutton surfaces being arranged close to each other in a common operating surface,
- a common switch housing with guiding means for movably guiding said actuation tappets in said switch housing,
- a cap mounted onto said common switch housing, said cap comprising a relatively rigid plastic frame with one cutout window, said one cutout window corresponding in shape and size to the circumference of the pushbutton surfaces,
- said cap further comprising a silicone membrane stretched over said one cutout window and an outer surface of said silicone membrane forming said common operating surface.
Dependencies are inferred from the claim text.