Single end strip of automobile safety belt and preparation method thereof

Abstract

The invention discloses a single end strip of an automobile safety belt and a preparation method thereof, wherein the single end strip comprises a single end strip body; the single end strip body is provided with a mesh belt connection part and a fixed connection part; the center of the mesh belt connection part is provided with an inner ring; the mesh belt of the safety belt passes through the inner ring, so that the connection with the single end strip body is realized; and a turnup is arranged along the edge of the inner ring. The preparation method comprises the following steps of: manufacturing the single end strip body according to standard material quality and specification, adopting a first stamping die to form the inner ring and the turnup in a punch forming way, and adopting a second stamping die to form finished products in a reverse punching way. The turnup structure is adopted for the connection between the single end strip provided by the invention and the mesh belt of the safety belt; an R angle transition is adopted for a turnup contact face; the contact face is round and smooth, so that the mesh belt of the safety belt is evenly stressed; and moreover, the stress can be dispersed, and the safety effect is promoted remarkably. In addition, with the adoption of raw materials for punching and forming, no plastic pieces are necessarily adopted; and therefore, not only is the material cost decreased, but also the procedure is reduced and the manufacturing cost is decreased.

Description

[0001] Technical field [0002] The invention relates to a safety protection device on a car, especially a car, in particular to a single-end sheet used on a seat belt. Background technique [0003] The car seat belt is a protective device installed on the car, which is used to securely tie the driver and occupant's body to the seat so as not to be hurt when the car is suddenly braked or the body is hit hard. The speed of modern cars is very fast. Once a collision occurs, the body stops moving, and the passenger's body will continue to move forward due to inertia, colliding with the body in the car, and in severe cases, it may crash the windshield and fly forward out of the window. In order to prevent similar injuries during a crash, the public security department requires small passenger car drivers and front passengers to use seat belts so that in the event of a traffic accident, the seat belts can cushion people and prevent secondary injuries. [0004] The car seat belt d...

AI Technical Summary

Problems solved by technology

The traditional seat belt single-end sheet is made of metal, the inner ring of the single-end sheet body is set with a plastic liner, and the plastic liner and the seat belt webbing are directly connected to realize the connection; the shape of the plastic liner is directly connected to the inner ring of the single-end sheet body Corresponding to the shape, because the frequency of use of the seat belt is very high, the seat belt webbing and the plastic liner often rub against each other during long-term use, and the contact surface between the plastic liner and the seat belt webbing is small, and the plastic liner does not consider the force characteristics at all Designing a suitable contact surface leads to uneven force on each point of the entire force-bearing surface, and the friction resistance of the plastic liner is relatively large. Many factors cause the seat belt webbing to wear a lot during use, and even break off in extreme cases. , which affects its reliability. In addition, the cost of the plastic liner is also high. Due to the combination of two materials involved, not only the process is more complicated, but the manufacturing cost has also increased.

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