Locking spring bolt used for safety belt and safety belt

Abstract

The invention discloses a locking spring bolt used for a safety belt and the safety belt. Due to the adoption of the locking spring bolt provided by the invention, under the condition that collision occurs, the resultant force of a braided belt of a shoulder belt and a waist belt penetrating through a locking body can pull the locking body, meanwhile, a shape change body connected with the lockingbody is of a structure capable of generating plastic deformation, so that the shape change body generates deformation, and further, the locking body can get close to a locking baffle plate and finallymakescontactwiththe locking baffle plate. One end of the braided belt penetrating through the locking body is the shoulder braided belt, the other end is the waist braided belt, and the relevancy between the shoulder braided belt and the waist braided belt is blocked. In short, for the technical scheme provided by the invention, the force difference of the stress to the shoulder belt and the waist belt is no longer adopted as the judging basis for blocking the relevancy between the shoulder belt and the waist belt, the resultant force of the shoulder belt and the waist belt is used for blocking the relevancy between the shoulder belt and the waist belt, so that the instantaneity of locking is achieved, and locking failure cannot occur.

Description

technical field [0001] The invention relates to the technical field of safety belts, in particular to a locking tongue for safety belts. The invention also relates to a safety belt. Background technique [0002] Along with the development of science and technology, and in order to guarantee the safety of the occupants, more and more attention is paid to the improvement of seat belts by technicians in this field. For the existing commonly used three-point safety belt, the three-point safety belt webbing includes a shoulder belt part that restricts the movement of the occupant's upper body and a waist belt part that restricts the movement of the occupant's lower body, and a lock tongue is provided between the shoulder belt and the waist belt. When a vehicle collides, the occupant's lower body moves forward under the action of inertial force. Since the lock tongue of the ordinary seat belt cannot block the connection between the shoulder belt and the waist belt, the shoulder b...

AI Technical Summary

Problems solved by technology

However, no matter what the principle of the above scheme is, if the force difference between the shoulder belt and the belt is used to set the locking bolt, since the force difference will change dynamically, it is difficult to control, and it is easy to cause problems such as locking failure or locking delay.

On the other hand, the adoption of the above-mentioned schemes all require the combination or cooperation of multiple parts, resulting in a relatively complex structure and a relatively large weight.

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