Inertia lock mechanism applicable to seat

Abstract

The invention discloses an inertia lock mechanism applicable to a seat. The inertia lock mechanism applicable to the seat comprises an inertia lock mechanism mounted on a sliding rail support; the inertia lock mechanism comprises an inertia lock piece, an inertia lock piece pin and an inertia lock piece resetting torsional spring, wherein the inertia lock piece pin is mounted on the front side of the sliding rail support, and the upper end shaft of the inertia lock piece is arranged on the inertia lock piece pin, and the lower edge of the inertia lock piece is in an arc shape; the inertia lock piece resetting torsional spring is wound onto the inertia lock piece pin, one end of the inertia lock piece resetting torsional spring acts on the inertia lock piece, and the other end of the inertia lock piece resetting torsional spring acts on the sliding rail support. When a vehicle collides forwards, the inertia lock piece can rotate forwards by inertia to be in contact with a stopping point of a front connecting rod and further to lock the front connecting rod so that the front connecting rod can stop rotating forwards and a part of collision force can be ensured to be transmitted to the sliding rail support through the front connecting rod and then to sliding rails through the sliding rail support to weaken an upper connecting rod and a sliding rail rear support.

Description

technical field [0001] The invention relates to the technical field of car seats, in particular to an inertia lock mechanism for the seat. Background technique [0002] In the model of the four-link functional seat, when a frontal collision occurs, the front link rotates freely around the pivot point, and the force cannot be transmitted to the slide rail through the front link, and all the forces are concentrated on the rear end of the upper link and the slide rail For the rear end, the traditional solution is to strengthen the upper link and the rear end of the slide rail, so that the upper link can withstand the force of the front impact, but this method has a relatively heavy frame and high cost; therefore, a new type of inertia lock is required. During a crash, the front link is locked, allowing some of the force to be transferred through the front link to the slide rail. [0003] see Figure 1 to Figure 3 , the working principle of the inertia lock mechanism shown in t...

AI Technical Summary

Problems solved by technology

The advantage is that the backrest 4 can be considered to use a single-side recliner or a recliner with a small torque; the disadvantage is that the friction force between the inertia lock plate 1 and the rotating shaft 2 is not easy to control, and if the friction force is too small, abnormalities may occur during normal use. Noisy, if the friction force is too large, it may not work in frontal collision

In addition, the rotating shaft 2 needs to be strengthened by adding a reinforcing bracket 6, which increases the cost

In addition, the inertia lock plate cannot be used to lock the front linkage

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