| 摘要 |
PURPOSE: Seatback frame structure for a vehicle is provided to let a driver select the optimum state to support the upper part of the body through adjustment of a seatback in accordance with the driving state by making the angle of an upper frame adjusted according to the operation of a lever. CONSTITUTION: Seatback frame structure for a vehicle comprises an upper frame(2) and a lower frame(4) installed inside a seatback as the fastened structure by a hinge(10); first brackets(8) each welded to the right and left inner surface of the upper frame; second brackets(6) each welded to the right and left outer surface of the lower frame; a locking part(12) mounted to the right inner surface of the lower frame; a second spring fastened to one end of the locking part and to one side end of the lower frame, to turn the turned locking part to the original position if the operation of a lever is released; a first spring(16) fastened to a horizontal member(8a) and to a side of the lower frame, to turn the upper frame if the locking of the locking part is released; and a cable turning the locking part by the operation of the lever. The first bracket forms a saw tooth(8b) to engage with a tooth form(12a) formed to the locking part and a hole(8c) hingably combined with the second bracket. The second bracket forms a hole corresponding to the hole of the first bracket. The locking part is engaged with the saw tooth of the first bracket and the cable connected to the lever is fastened to one end of the locking part.
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