Patent ID: 6390483
Filing Date: 2002-05-21
Classification: B62K,Y10T

Abstract:
A folding device for a scooter comprising: an elongated base plate (20), a head tube (22), a handlebar stem (21), a support rod (23) mounted between said head tube (22) and said base plate (20), and a support base (30) mounted between said support rod (23) and said base plate (20), wherein,said support base (30) includes a first side plate (32) and a second side plate (33) spaced from said side plate (32), with an arcuate slide track (325) defined in said first side plate (32) and having a first end with a first insert hole (321) formed therein and a second end with a second insert hole (322) formed therein, a first through hole (323) defined in said first side plate (32), a first locking hole (331) defined in said second side plate (33) and aligning with said first insert hole (321), a second locking hole (332) defined in said second side plate (33) and aligning with said second insert hole (322), and a second through hole (333) defined in said second side plate (33) and aligning with said first through hole (323); said support rod (23) includes a bottom end provided with a transverse tube (231) located between said first side plate (32) and said second side plate (33) and with a receiving chamber (232) formed therein, located above said transverse tube (231) for receiving there in a support tube (233) which is rested between said first side plate (32) and said second side plate (33); a positioning axle (34) extending through said first through hole (323) of said first side plate (32), said transverse tube (231) of said support rod (23), and said second through hole (333) of said second side plate (33) so that said support rod (23) is pivotally mounted on said support base (30); a pull rod (40) slidably mounted in said support tube (233) and having a first end provided with an outer thread (43) extending outward from said slide track (325) of said first side plate (32) to be engaged with a pull knob (44) which protrudes outward from said slide track (325) of said first side plate (32) and a second end provided with an enlarged head (42) extending outward from said support tube (233) and detachably received in said first locking hole (331) or said second locking hole (332), and a spring (41) mounted on said pull rod (40) and biased between said pull knob (44) and said enlarged head (42); a guard plate (31) mounted between said first side plate (32) and said second side plate (33) for supporting said support rod (23), said guard plate (31) having a first side provided with a first axle (311) and a second side provided with a second axle (312) having a screw hole (3121) formed therein; a retaining piece (313) having an arcuate recess (3131) formed therein, for retaining said support rod (23) and having a first end pivotally mounted on said first axle (311) and a second end defining a slot (3132); and a threaded insert rod (314) extending through a guard pad (315) and said slot (3132) of said retaining piece (313), and screwed into said screw hole (3121) of said second axle (312), and a positioning handle (316) pivotally mounted on said insert rod (314) for selectively locking said support rod between said retaining piece and said guard plate.