Patent ID: 6622314
Filing Date: 2003-09-23
Classification: A42B

Abstract:
A coupling apparatus for a helmet shield which includes a helmet, and a shield for closing and opening a front portion of the helmet, comprising:a shield which includes left and right protruded inner portion, a curved rim protrusion, a cam shaped shaft portion having an engaging shaft flange at both sides of the rim protrusion, and a guide pin shaft protruded from one side of the same; a movable shaft member which includes a shaft flange guide shoulder portion inserted into the shaft flange of the shield and connected to be rotatable and a locking means for preventing an escape of the shaft flange; a base member which includes upper and lower, escape prevention shoulder portions which are slide-movable by assembling upper and lower escape prevention flanges formed in an outer circumferential surface of the movable shaft member, a concave portion and unlocking member operation space in one side surface, a guide inducing groove for the pin shaft installed in a bottom side of the concave portion, and an unlocking means for unlocking the locking means; and a movable shaft member spring which is assembled to a back surface of the base member and includes one end engaged to a spring engaging ring of the movable shaft member and the other end supported by the base member for thereby returning the movable shaft member, wherein the cam shaped shaft portion of the shield is rotatable in the movable shaft member, and the movable shaft member is slide-movable in the concave portion of the base member in a forward and backward direction.