Key module for portable devices
AssigneeWeistech Technology Co., Ltd.
InventorWei Hsu
Life of this patent
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Abstract
A key module for portable devices includes a PCB having at least one pair of high resistance film and welding point, a rubber key having a protruded key head, and a set of upper case and bottom case. The rubber key has two conducting carbon arcs opposite to the at least one pair of high resistance film on a concave backside thereof. A top of the head portion has a concave on a middle portion thereof and two protrusions on right and left ends thereof for specific input functions. The upper case has at least one through hole for revealing the concave and the protrusions of the head portion while the rubber key and the PCB are covered by the upper and bottom cases.
Claims8
A key module for portable devices comprising:
- a printed circuit board, having at least one pair of resistive film portions, and each of the resistive film portions being provided with a welding point;
- and
- a rubber key, having a protruding head portion on an end thereof and two conducting carbon arcs on a concave backside thereof;
- the two conducting carbon arcs being arranged opposite to the at least one pair of resistive film portions, and a top of the head portion of the rubber key having a concave portion and two protrusions being formed on both sides of the concave portion.
Dependencies are inferred from the claim text.