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What is the length of a seat belt?

1 Answers

HoldenMarie

07/29/25 7:49pm

Seat belts do not have a fixed length, ranging from 75cm to 100cm. The following are the main structural components of a car seat belt: 1. Webbing: The webbing is a band approximately 50mm wide and 1.2mm thick, woven from synthetic fibers such as nylon or polyester. Depending on the application, the weaving method and heat treatment are used to achieve the required strength, elongation, and other characteristics of the seat belt. It is also the part that absorbs impact energy. Different countries have varying regulatory requirements for seat belt performance. 2. Retractor: The retractor adjusts the length of the seat belt based on the occupant's seating position and body size, and it retracts the webbing when not in use. 3. Anchorage system: The anchorage system includes the buckle, tongue, anchor pin, and anchor plate. The buckle and tongue are devices for fastening and releasing the seat belt. The end of the webbing fixed to the car body is called the anchor plate, the body-fixed end is called the anchor plate, and the fixing bolt is called the anchor bolt. The position of the shoulder belt anchor pin greatly affects the convenience of fastening the seat belt. Therefore, to accommodate occupants of various sizes, an adjustable anchorage system is generally used, allowing the shoulder belt position to be adjusted up and down.

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