Patent ID: 6595033
Filing Date: 2003-07-22
Classification: E05B,Y10T

Abstract:
An attachment structure for a key cylinder, the key cylinder provided with a convex portion on a peripheral surface thereof for preventing rotation, and two rectangular grooves for fixing the key cylinder in a hole of an attachment unit, comprising:a leaf spring for hooking on the rectangular groove of the key cylinder to prevent the key cylinder from coming out of the hole of the attachment unit, said leaf spring including: a plate having a hole for receiving the key cylinder therethrough; a notch for receiving the convex portion of the key cylinder; two spring tabs elastically bendable in an insertion direction of the key cylinder, wherein a top end of each of said spring tabs is inclined with respect to a bottom of the rectangular grooves of the key cylinder before bending, so that the top end is partially brought into contact with a back wall edge of the rectangular grooves of the key cylinder after bending; and wherein a line connecting a center of each of said two spring tabs is inclined at an angle with respect to a horizontal line.