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US 2009/0223801 A1Published application
Member for push button switch and manufacturing method thereof
AssigneeClevergas Holdings S.A.
InventorsShohei Murakami, Masaru Souma
Life of this patent
Estimating the term…
Abstract
Disclosed are a key top (4) to be used for push button switches of a portable electronic device, which key top has a metal sheet (6) with an approximately thin plate shape, and an outer-layer sheet (8a, 8b) made of a flexible material which is connected to one surface or both surfaces of the metal sheet (6), and a key sheet (2) which has the key top (4) and a sheet-like key base of an elastic material connected thereto, and methods of manufacturing the key top and the key sheet.
Claims5
1-10. (canceled)
A key sheet to be used for push button switches of a portable electronic device, comprising:
- a key top having a sandwich structure having a metal sheet with an approximately thin plate shape, and outer-layer sheets of a flexible material which are connected to both surfaces of said metal sheet;
- a sheet-like key base made of an elastic material which is connected to one surface of said key top;
- wherein a notch area for push button movement is provided for at least said outer-layer sheet located at the side to which said key base is connected and said metal sheet;
- and
- said key sheet has a protection means for edge portions of said metal sheet, said means being formed by inserting a projecting portion provided on said key base into said notch area.
2 more elements
Dependencies are inferred from the claim text.