Unlocking branching mechanism of automobile back seat

Abstract

The invention discloses an unlocking branching mechanism of an automobile back seat. The mechanism comprises a branching box, a middle shaft, a middle stay wire, symmetrically arranged side shafts, connecting rods, side stay wires and stay wire sleeves, wherein T-shaped slots are correspondingly arranged on the front and rear walls of the branching box; sleeve holes are correspondingly arranged on the left and right walls; the two ends of the middle shaft are located in the vertical slots of the T-shaped slots and are in sliding fit with the vertical slots; the two ends of the two side shaftsare located in the left and right transverse slots of the T-shaped slots respectively and are in sliding fit with the transverse slots; the two ends of the connecting rods are articulated with the middle shaft and the side shafts respectively; the middle stay wire is connected with the middle shaft; the two stay wire sleeves are located in the two sleeve holes and are in sliding fit with the sleeve holes; and the inner side ends of the stay wire sleeves are fixedly connected with the side shafts. Through the invention, the locks with the same travel or two locks with little difference in travel can be synchronously unlocked, and the effect of uniform unlocking force is realized; and by reasonably setting the angle between the two connecting rods and the middle stay wire, the operation force and operation travel are smaller and better.

Description

technical field [0001] The invention relates to a locking device, in particular to an unlocking branch line mechanism for manipulating a turning seat locking mechanism of a motor vehicle, and belongs to the technical field of automobile fittings. Background technique [0002] At present, the middle or rear seats of mid-to-high-end cars usually have four or six structures, and most of them are seat cushions and backrests that are separately installed. While ensuring that the car seat meets the requirements of various laws and regulations and mechanical strength, it has the function of folding the backrest to increase the space for storing items inside the car. Based on the above design requirements, in order to enhance the fixing strength of the seat back, the six-back fixing method adopts a double-lock fixing structure: one lock is used to lock the backrest and the body, and the other lock is used to lock the seat back near the center of rotation. Increase the limit and enh...

AI Technical Summary

Problems solved by technology

The problems with this structure are: 1. When the unlocking strokes of the two locks are different, there must be a lock that unlocks the other lock first, and then the operator will feel obvious frustration and feel that the unlocking force is not enough. Balance; 2. The operating force of the two locks increases with the increase of the stretching or compression of the internal spring of the lock, that is, the unlocking force is: F=Kx+b (K is the elastic coefficient of the spring, x is the unlocking stroke, b is the pre-tightening force), so the unlocking operation force may exceed the standard range until the end; 3. The unlocking stroke is the largest of the two locks, resulting in a large unlocking stroke

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