Automobile backrest folding mechanism

Abstract

The invention discloses an automobile backrest folding mechanism comprising a connection plate fixed on a cushion framework, wherein the backrest framework is rotatably matched with the connection plate by a locking plate, the locking plate is provided with a limitation pin for limiting the backward turning of a backrest, a locking assembly is used for locking the locking plate when the seat is normally used, or unlocking the locking plate when the backrest needs to be laid down, one end of a locking pin of the locking assembly, which extends into a slot of the locking plate, is cylindrical, and the end face of the locking pin extends out of the side of the locking plate. Because the limiting slot of the locking pin is canceled, the manufacturing process is simplified, the external diameter size can be efficiently ensured, the production efficiency is efficiently enhanced, the production cost is lowered, and the problem of abnormal sound generated by no interval between the automobilebackrest folding mechanism and the slot of the locking plate is solved. In addition, through arranging an axial limiting structure to the locking pin and improving the limitation pin and reinforcing ribs, the product quality, the performance, and the production efficiency can be further enhanced, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to parts of a car seat, in particular to a folding mechanism of a foldable seat. Background technique [0002] The rear seat of the car with a folding mechanism can conveniently fold the seat back forward to increase the storage space in the car. [0003] In the prior art, the folding mechanism generally includes a connecting plate fixed on the cushion frame, and the backrest frame is rotatably matched with the connecting plate through the locking plate. The component is used to lock the locking plate when the seat is in normal use or to unlock the locking plate when the backrest needs to be laid down. There are several deficiencies in the existing folding mechanism: 1) The locking pin of the locking component There is a limiting groove on the top, and the locking groove of the locking plate is stuck in the limiting groove of the locking pin to realize the locking when the seat is in normal use. Due to the existence of the limit...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the folding mechanism generally includes a connecting plate fixed on the cushion frame, and the backrest frame is rotatably matched with the connecting plate through the locking plate. The component is used to lock the locking plate when the seat is in normal use or to unlock the locking plate when the backrest needs to be laid down. There are several deficiencies in the existing folding mechanism: 1) The locking pin of the locking component There is a limiting groove on the top, and the locking groove of the locking plate is stuck in the limiting groove of the locking pin to realize the locking when the seat is in normal use. Due to the existence of the limiting groove, the locking pin is not easy to process, and the outer The diameter size is not easy to guarantee, and the backrest frame is easy to loosen and produce abnormal noise during the limit; 2) The lock pin of the existing lock assembly is not axially limited after assembly, resulting in the lock pin easily moving axially when the vehicle is running, resulting in Abnormal sound; 3) The limit pin is directly welded to the connection plate, there is no positioning reference, the consistency is poor, and one-sided welding is easy to cause deformation of the connection plate; 4) The stiffener stamped on the connection plate is not an integral structure, for To ensure the performance of the connecting plate, one more part needs to be assembled, and the manufacturing process is complicated, which is not conducive to improving production efficiency and reducing manufacturing costs

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