Key switch
AssigneeDarfon Electronics Corp.
InventorLing-Hsi Chao
Life of this patent
Estimating the term…
Abstract
A key switch includes a key cap, a base, a support device and a bracket. The base has a first magnetic area. The support device is disposed between the key cap and the base. The bracket is movably connected to the support device. The bracket has a second magnetic area corresponding to the first magnetic area. When the key cap is not pressed, a magnetic attraction force between the first and second magnetic areas keeps the key cap at a non-pressed position. When the key cap is pressed by an external force, the key cap moves with the support device from the non-pressed position to a pressed position. When the external force is released, the second magnetic area moves toward the first magnetic area due to the magnetic attraction force, such that the key cap moves with the support device from the pressed position to the non-pressed position.
Claims5
A key switch comprising:
- a key cap;
- a base having a first magnetic area and a protruding platform;
- a support device disposed between the key cap and the base, the key cap moving with the support device between a non-pressed position and a pressed position;
- and
- a bracket movably connected to the support device, the bracket having a second magnetic area and a protruding portion, the second magnetic area corresponding to the first magnetic area, the protruding portion abutting against the protruding platform;
- wherein when the key cap is not pressed, a magnetic attraction force between the first magnetic area and the second magnetic area keeps the key cap at the non-pressed position;
- when the key cap is pressed by an external force, the support device drives the bracket to move on the protruding portion, such that the second magnetic area moves away from the first magnetic area and the key cap moves with the support device from the non-pressed position to the pressed position;
- when the external force is released, the first magnetic area attracts the second magnetic area magnetically and then the second magnetic area drives the bracket to move on the protruding portion, such that the second magnetic area moves toward the first magnetic area and the key cap moves with the support device from the pressed position to the non-pressed position.
A key switch comprising:
- a key cap;
- a base having a first magnetic area;
- a support device disposed between the key cap and the base, the key cap moving with the support device between a non-pressed position and a pressed position;
- a magnetic induction member fixed on the support device;
- and
- a magnetic member disposed on the magnetic induction member, the magnetic member inducing the magnetic induction member to generate magnetism, so as to form a second magnetic area on the magnetic induction member, the second magnetic area corresponding to the first magnetic area;
- wherein when the key cap is not pressed, a magnetic attraction force between the first magnetic area and the second magnetic area keeps the key cap at the non-pressed position;
- when the key cap is pressed by an external force and the second magnetic area moves away from the first magnetic area, the key cap moves with the support device from the non-pressed position to the pressed position;
- when the external force is released, the second magnetic area moves toward the first magnetic area due to the magnetic attraction force, such that the key cap moves with the support device from the pressed position to the non-pressed position.
Dependencies are inferred from the claim text.