Patent ID: 6450519
Filing Date: 2002-09-17
Classification: B62K

Abstract:
A waist-twisting leisure bike comprising a front body frame, a rear body frame and a lateral frame:said front body frame provided with a handle, a support rod, a front fork tube, a front fork base, a front fork and a front wheel; said rear body frame provided with a driving device, a seat, and a rear wheel; said lateral frame comprising a first lateral frame and a second lateral frame, said first and said second lateral frames connected by pivot plates, said pivot plate of said first lateral frame having a bearing, said pivot plate of said second lateral frame having a through hole, a pivot extending in said through hole and a center of said bearing to pivotally connect said two pivot plates, a lock member provided at the pivotally connected location, another lock member provided between said front fork tube and said front fork base, said first and said second lateral frames unlocked to sway respectively to each other and said front fork tube and said front fork base locked to keep said handle immovable by handling said two lock members so that a rider of said bike can twist the waist in controlling a moving direction of the bike; and wherein said lock members respectively have a base with a groove formed in an upper end thereof, a chamber formed in an interior thereof, a through hole bored in an upper portion thereof, and a locking rod having two sections of different diameters and a pull ring connected to a top of said locking rod, and a lock base having a position hole, one of said lock members being in a locked condition when said pull ring is positioned in said groove of said base and said locking rod inserts in said position hole of said lock base, another of said lock members being in an unlocked condition when said pull ring is pulled up to disengage from said groove and said locking rod separates from said position hole of said lock base.