Patent ID: 6223392
Filing Date: 2001-05-01
Classification: A45C,Y10T

Abstract:
A retractable handle assembly comprises:a grip device, a button, a U-shaped rod, a hollow driven rod, an inner pipe, an outer pipe, a seat, and a positioning mechanism,the seat having two sleeves and two oblong holes,the button enclosing a center portion of the U-shaped rod,the grip device having a first grip casing and a second grip casing engaging with the first grip casing,the first grip casing having an upper recess, two lower grooves, and a hollow interior receiving the button, a coiled spring, and the U-shaped rod,the coiled spring disposed on a bottom of the button,the second grip casing having an upper groove and two circular holes,the U-shaped rod having two end portions,an upper end of the hollow driven rod receiving the respective end portion of the U-shaped rod,a round hole formed on an upper portion of the inner pipe,a plurality of oblong apertures formed on the outer pipe,the hollow driven rod inserted in the inner pipe,the inner pipe inserted in the outer pipe,an upper end of the inner pipe inserted in the respective lower groove of the first grip casing,the inner pipe passing through the respective oblong hole of the seat,an upper end of the outer pipe inserted in the respective sleeve,the positioning mechanism disposed on a bottom of the inner pipe,the positioning mechanism having a mount, a lateral plate engaging with the mount, a hollow brake block, and a positioning block,the mount having a guide groove and a positioning groove,the hollow brake block having a bevel groove,the positioning block having two posts,the hollow brake block inserted in the guide groove of the mount,a compression spring disposed on a bottom of the hollow brake block,the positioning block inserted in the positioning groove of the mount,the posts inserted in the bevel groove of the hollow brake block,when the button is released, the coiled spring forces the button to move upward, the compression spring forces the hollow brake block to move upward, and the positioning block is inserted in one of the oblong apertures of the outer pipe,when the button is pressed downward, the hollow driven rod drives the hollow brake block to move downward, and the posts move upward along the bevel groove of the hollow brake block so that the positioning block will disengage from the respective oblong aperture of the outer pipe.