Readily releasable locking device for a desk
AssigneeArtso International, Inc.
InventorKuo-Hung Chen
Life of this patent
Estimating the term…
Abstract
Disclosed is a readily releasable locking device for guarding a movement of an angularly movable flat board relative to an elongated shell. The readily releasable locking device includes a latch member operable to retain or release a guided rod that can be retained at various positions to permit the flat board to be tilted at different angles. Also disclosed is a readily releasable locking device for guarding against a movement of the elongated shell that is linearly movable relative to a non-movable tubular core member.
Claims18
A readily releasable locking device for guarding against an angular movement of an angularly movable flat board relative to a non-angularly movable elongated shell, the angularly movable flat board being disposed to make continuous angular displacement relative to the non-angularly movable elongated shell between a laid-flat position and a lifted-up position, said readily releasable locking device comprising:
- a first link bar adapted to be fixed on the angularly movable flat board and having a first pivot end distal from the angularly movable flat board;
- a second link bar adapted to be fixed on the non-angularly movable elongated shell and having a second pivot end distal from the non-angularly movable elongated shell;
- a hollow block pivotally mounted to said second pivot end about a second pivot axis, and having a guiding slot which extends transverse to the second pivot axis;
- a guided rod having a connected end pivotally mounted to said first pivot end about a first pivot axis parallel to the second pivot axis, and a rod body extending from said connected end along a lengthwise line to terminate at a free end, said rod body being led to pass through said guiding slot and to extend outwardly of said hollow block, so as to permit said guided rod to be moved relative to said hollow block between a proximate position, where said hollow block is proximate to said first pivot end, and which corresponds to the laid-flat position of the angularly movable flat board, and a distal position, where said hollow block is distal from said first pivot end, and which corresponds to the lifted-up position of the angularly movable flat board;
- a latch member disposed in said hollow block and coupled with said guided rod such that said latch member is displaceable between a first orientation, where said guided rod is retained by said latch member, and a second orientation, where said guided rod is permitted to move relative to said latch member;
- a biasing member disposed in said hollow block to bias said latch member to the first orientation;
- and
- an actuating unit configured to actuate said latch member to move from the first orientation to the second orientation.
A readily releasable locking device for guarding against a linear movement of a linearly movable elongated shell relative to a non-movable tubular core member, the linearly movable elongated shell being slidably fitted on the non-movable tubular core member, and being disposed to make continuous linear displacement relative to the non-movable tubular core member between a retracted position and an extended position, said readily releasable locking device comprising:
- an under mounting frame adapted to be secured to the linearly movable elongated shell;
- front and rear mounting frames adapted to be secured to the non-movable tubular core member and spaced apart from each other in a forward-and-rearward direction;
- a guiding bar extending in the forward-and-rearward direction to terminate at front and rear ends which are secured to said front and rear mounting frames, respectively;
- a hollow block configured to be guided by and movable relative to said guiding bar between a rear position, where said hollow block is close to said rear mounting frame, and which corresponds to the retracted position of the linearly movable elongated shell, and a front position, where said hollow block is remote from said rear mounting frame, and which corresponds to the extended position of the linearly movable elongated shell;
- a connecting rod which extends through said front mounting frame to connect said under mounting frame and said hollow block, thereby permitting said hollow block to be moved with the linearly movable elongated shell;
- a latch member disposed in said hollow block and coupled with said guiding bar such that said latch member is displaceable between a first orientation, where said latch member together with said hollow block is retained on said guiding bar, and a second orientation, where said latch member together with said hollow block is permitted to move relative to said guiding bar;
- a biasing member disposed in said hollow block to bias said latch member to the first orientation;
- and
- an actuating unit configured to actuate said latch member to move from the first orientation to the second orientation.
The readily releasable locking device according to claim 14, wherein said under mounting frame has a longitudinal mounting wall adapted to be secured to the linearly movable elongated shell and extending in the forward-and-rearward direction to terminate at a rear wall end, and a transverse mounting wall extending downwardly from said rear wall end, said connecting rod being configured to connect said transverse mounting wall and said hollow block, said manually operable actuator having an angular lever which has a fulcrum end pivotally mounted to said under frame about a fourth pivot axis in a position adjacent to said longitudinal mounting wall, a power end, and a weight end which is angularly displaced from said power end about the fourth pivot axis, and which is configured to anchor said pulled end such that when said power end is pushed to move angularly about the fourth pivot axis, said weight end is actuated to pull said pulled end.
Dependencies are inferred from the claim text.