Direction control key assembly
AssigneeTXC Corporation
InventorMao-Ting Chiang
Life of this patent
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Abstract
A direction control key assembly comprises a base on which a cover is mounted to provide an interior space for receipt of a circuit board therein which has at least four switch units thereon respectively designating a specific direction. A button member is supported on the cover by a ball joint and has four pins depending therefrom respectively corresponding to the switch units such that when the button member is rotated with respect to the ball joint to allow one of the pins to engage and thus close the corresponding one of the switch units. A direction signal associated with the closed switch is thus generated.
Claims5
A direction control key assembly comprising a casing having a base with a cover mounted thereon to provide an interior space to receive therein a circuit board having a number of switch units mounted thereon, said cover having a rod located on a central position thereof and extending therefrom with an expanded spherical portion formed on a remote end thereof, said cover further comprising a number of through holes, corresponding to the switch units, symmetrically disposed around said rod, and a button member having a recess formed on an underside thereof to receive the expanded end of said rod therein, forming a ball joint between said button member and said cover to allow said button member to be depressingly rotatable with respect to said cover, said button member further comprising a number of depending pins formed on the underside thereof, corresponding to the through holes formed on said cover so that when said button member is rotated with respect to said cover, a combination of the depending pins is allowed to engage and thus actuating the corresponding switch units provided on said circuit board through the through holes to generate direction signals corresponding to the actuated switch units.
Dependencies are inferred from the claim text.