Automobile chair backrest spring and automobile chair backrest capable of reducing whiplash injuries

Abstract

The invention discloses an automobile chair backrest spring and an automobile chair backrest capable of reducing whiplash injuries. The automobile chair backrest spring is provided with a main backrest spring body and a plurality of connecting parts, wherein each connecting part is fixedly connected to the main backrest spring body through an extension spring; moreover, by adopting the extension springs with corresponding performance, when the main backrest spring body is fixedly connected to an automobile chair backrest frame through all the connecting parts, each extension spring is in an elastic extension deformation state, and when an automobile which adopts the automobile chair backrest spring receives instantaneous acceleration due to rear collision with the relative speed of 20km/hor more, each extension spring gets into a plastic deformation state. Under the premise that suitable elasticity and enough support can be provided for the back of a passenger as the automobile normally runs, the automobile chair backrest spring and the automobile chair backrest reduce whiplash injuries of the neck of the passenger in the process of medium-or-low-speed rear collision, increases the safety of an automobile chair in collision; and have the advantages of simple structure and low cost and practical application value.

Description

technical field [0001] The invention discloses an automobile seat back spring and an automobile seat back that can reduce whiplash injuries. Background technique [0002] With the development of the automobile industry, the passive safety performance of automobiles is constantly improving. At the same time, according to accident statistics in recent years, the incidence of whiplash injuries is extremely high in low-speed rear collisions, especially in rear-end collisions. Under the joint action of collision acceleration and head inertial force, the driver and occupant will have a whiplash on the neck. Although it will not cause fatal injuries, the "whiplash" on the neck is a traffic accident. It is the most serious secondary injury, and the post-injury rehabilitation process is very long and complicated, and even irreversible permanent injury may occur. [0003] As one of the key parts of the car, the car seat not only requires a reasonable arrangement to ensure ride comfor...

AI Technical Summary

Problems solved by technology

[0004] At present, the back springs of automobile seats are generally installed on the back spring brackets located on the back side panels in the form of steel wires. Although such back springs can provide better support for the occupant's back, their rigidity is relatively strong. During the whipping test, the back of the dummy is hindered by the back spring to a certain extent, which delays the contact time between the neck of the dummy and the headrest of the seat, which has a negative impact on the whipping performance, which is increasingly valued

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