Patent ID: 7686263
Filing Date: 2010-03-30
Classification: A47B,G03B

Abstract:
1. A leg device for height-adjustably supporting an object, comprising: a leg shaft having a male thread portion, and a ground part on a lower end thereof, and an ascending/descending device supported on the leg shaft to be capable of ascending and descending, said ascending/descending device comprising: a base having a fixing part to be fixed to the object, a through hole for receiving the leg shaft therein, and an elastic piece; a lock body having an upper part pivotally assembled with the base, and a female screw part engageable with the male thread portion on a front side of a lower end part thereof, said lock body being pushed by the elastic piece to move the female screw part toward the leg shaft inserted into the through hole; and a release body having an operating part projecting outward from the base, and a striking part positioned inside the base, said release body being moved by a release operation of the operating part to a release position so that the striking part is moved to push the lower end part of the lock body backward in opposition to pushing of the elastic piece, wherein said release body is formed as a rotating body, and is rotatably assembled on the base through a rotating shaft, said release body having said operating part on one side of the rotating shaft and said striking part on the other side, to allow the striking part to push the lock body from above in the release position by the release operation of lifting up the operating part.