Patent ID: 6219851
Filing Date: 2001-04-24
Classification: A42B

Abstract:
A ring-band adjustment structure of a crash helmet, comprising:a ring-band bent to form a ring;a connection part having an arcuate shape and having an accommodation groove installed in a front side thereof, said accommodation groove having two rows of positioning teeth installed therein and facing a top side of said connection part, said rows of positioning teeth having a unidirectional lock function, said connection part having slits installed on a bottom side thereof;two adjustment parts disposed in said accommodation groove, each of said adjustment parts having a first sliding groove in a vertical direction; and,a pair of sliding clumps each slidingly disposed in a respective one of said first sliding grooves each said sliding clump having an elastic component on a top side thereof to elastically push said sliding clump downwardly each said sliding clump having a pawl installed on a back side thereof, each said adjustment part having a second sliding groove formed in a horizontal direction on a back side of said adjustment part, each said adjustment part being joined with a push button on a front side of said adjustment part, each said push button being disposed outside the accommodation groove.