Locking device of a casing
AssigneeFirst International Computer, Inc.
InventorYing-Ta Lu
Life of this patent
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Abstract
A locking device applies to a casing having a cover and a seat for opening and closing of the casing. The locking device has a recess formed on an edge of the seat, a buckle downwards protruding from the cover and matching the recess, and a roller parallel-disposed in the recess and pivoted to the seat. The buckle has an accurate face smoothly against an upper slot of the roller for closing and opening the casing. A direction of lifting of the cover corresponds to a rotation of the roller so that a direction of applied force can be continuously unchanged to achieve an ergonomic effect.
Claims6
A locking device applies to a casing having a cover and a seat for opening and closing the casing, wherein the seat has a hinging edge pivotally hinged to the cover and an edge in an opposite direction of the hinging edge, the locking device comprising:
- a recess formed on the edge of the seat;
- a buckle protruding downwards from the cover and matching the recess, the buckle having a projecting portion at an end thereof and an accurate face at an inner side facing the hinging edge;
- and
- a roller parallel-disposed in the recess and pivoted to the seat, the roller having an upper slot relative to the buckle and a pattern arranged on an outer surface thereof, wherein a force is exerted on the roller to rotate the roller to lift the cover and open the casing;
- wherein a diameter of the roller is larger than a depth of the recess to allow the roller to protrude partially from the seat, the projecting portion of the buckle downwards hooks the upper slot to close the casing, and the accurate face of the buckle moves upwards and smoothly against the upper slot and slides out of the upper slot to lift the cover.
Dependencies are inferred from the claim text.