Adjustable chin strap for motorcycle protection helmets

摘要

Adjustable chin strap for motorcycle protection helmets with two strap parts which are interconnected by means of a self-locking double-action clamping-roller closure, in which the closure consists of a frame with at least two clamping rollers and, on one or both short transverse sections (18) of the frame (16) of the closure (15), an adjusting flap (19, 20) is articulated pivotably about the frame part (18) and the extent (21) of the adjusting flap (19, 20) in the direction of pull of the strap corresponds to the desired head-size modification of the strap, the adjusting flap (19, 20) being pivotable into the inside of the closure frame (16). …IMAGE…