Dome switch and smart card
AssigneeShenzhen Excelsecu Data Technology Co., Ltd.
InventorLiuzhang Chen
Life of this patent
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Abstract
A dome switch includes a first release membrane, a dome, a shim, and a second release membrane, the dome is mounted at an underside of the first release membrane, the second release membrane seals one end of a through opening of the shim, when the dome switch is mounted on a circuit board, a sealed space can be formed, ensuring that in the manufacture process of a smart card, the glue will not flow into the dome and hence the second release membrane will not be connected and adhered to the glue within the card, which may otherwise result in poor hand-tactile impression of the switch. The dome switch and the smart card with the dome switch presents good hand-tactile impression; the production rate is high and the rejection rate and the production cost are low.
Claims10
A dome switch, comprising:
- a first release membrane having a mounting hole;
- a dome mounted at an underside of the first release membrane, wherein a dome central portion of the dome is aligned with the mounting hole, and a periphery of the dome is opposite to the underside of the first release membrane;
- a shim connected with a top side of the first release membrane, wherein the shim has a through opening for accommodating the dome;
- and
- a second release membrane connected with one side of the shim, which side being opposite to the first release membrane, wherein the second release membrane is sealingly arranged at one end of the through opening.
Dependencies are inferred from the claim text.