Fastening device for safety belt

摘要

A fastening device for safety belt, including a first longer U-shaped biting plate, a second shorter U-shaped biting plate and an insertion pin. The first and second biting plate are formed with opposite ratchets on inner sides. The biting plates are positioned on two sides of a lower U-shaped suspending section of the safety belt and fitted with each other. The bent sections of the first biting plate cover the bent sections of the second biting plate in a stacked state. The U-shaped suspending section of the safety belt is clamped between the biting plates with the pin holes thereof aligned with each other. The insertion pin is passed through the pin holes and through the U-shaped suspending section of the safety belt. The ends of the insertion pin are enlarged to assemble with the safety belt by riveting, whereby the biting plates can be quickly slid along the suspending section of the safety belt to adjust the size of the fastening loop.