Functional unit with button functions
US9174536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2012 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Jun 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2229/047
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of producing a multifunctional functional unit with a rigid support structure, in which control elements and/or display elements are arranged behind a transparent surface layer which is continuous over substantially the entire functional unit. The method includes punching a positioning hole in a transparent plastic film with a thickness in the range of 0.1-0.4 mm; positioning the film into an injection mold using the positioning hole, with a corresponding positioning means for engaging in the positioning hole; back-injecting film to form a plastics support on the first side, the injection mold being designed such that, of the plastic film is not back-injected at the control elements and/or display elements, on the second side the plastics film is flooded with a transparent curing casting compound to form a continuous transparent surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.