Vehicle seat back locking system and vehicle seat

Abstract

The invention relates to a device for unlocking a vehicle seat backrest, in particular to a vehicle seat backrest locking system. The vehicle seat backrest locking system is provided with a backrest lock and a pin lock (2) unlocked under the traction action of the force application end of a second pulling wire (1), wherein the backrest lock is provided with an upper lock plate (4), a lower lock plate (5) driving the upper lock plate (4) in a rotating manner, and a first pulling wire (6) connected with the lower lock plate (5); the force application end of the second pulling wire (1) is fixedly connected onto the lower lock plate (5); and when the first pulling wire (6) is dragged to rotate the lower lock plate (5), the lower lock plate (5) enables the second pulling wire (1) to have a displacement for unlocking the pin lock (2) due to rotation. Meanwhile, the invention provides a vehicle seat with the vehicle seat backrest locking system. Due to the adoption of the technical scheme, the manufacturing cost of a product can be effectively saved; and in addition, the pin lock and the backrest lock can be synchronously unlocked, so that incomplete unlocking is avoided.

Description

technical field [0001] The invention relates to a device for unlocking a vehicle seat back, in particular to a vehicle seat back locking system. At the same time, the invention also provides a vehicle seat with the vehicle seat back locking system. Background technique [0002] Most of the existing vehicle seats are equipped with a vehicle seat back locking system. One of the main functions of this system is to relieve the deformation of the middle part of the rear seat back when the vehicle is subjected to a severe collision or impact. and increase the anti-deformation strength. In the prior art, the combination of backrest lock and pin lock is generally adopted, wherein the backrest lock mostly adopts the form of combining the upper lock body and the lower lock body (as disclosed in the Chinese invention patent application CN102224035A for the locking of vehicle seats unit), the upper lock body and the lower lock body are rotatably set on the bottom plate fixed to the se...

AI Technical Summary

Problems solved by technology

In order to unlock the backrest lock and the pin lock at the same time, a splitter structure is usually used, that is, the splitter has a bus and two branch lines connected to the pin lock and the backrest lock respectively, and the operation of the bus through an unlocking and starting device, The two branch lines are used to pull and unlock the pin lock and the backrest lock respectively, realizing one-time unlocking of the pin lock and the backrest lock. However, the structure of the line divider is added to the structure, which will inevitably increase the manufacturing cost. In addition, due to the pin The unlocking of the lock and the backrest lock is different, which leads to the fact that when one of them is unlocked, the other may not be unlocked, that is, the unlocking operations of the two locks are not synchronized. Therefore, the operator mistakenly believes that the backrest has been unlocked, thus stopping to continue to pull to unlock Activate the device so that the backrest cannot be unlocked smoothly

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