| 摘要 |
PCT No. PCT/EP81/00006 Sec. 371 Date Sep. 25, 1981 Sec. 102(e) Date Sep. 25, 1981 PCT Filed Jan. 22, 1981 PCT Pub. No. WO81/02093 PCT Pub. Date Aug. 6, 1981.The mechanism for adjusting a lumbar support of a back of an office seat, motor vehicle seat or the like, with a plate-like moulding (4) adjustable perpendicularly to the plane of the seat back serves to make the sitter occupy an anatomically correct posture, the moulding (4) supporting the sitter's back. The moulding (4) is adjusted by a spring (5) on which the moulding is disposed and is adjustable transversely by a manual control element. Moulding (4) can also be moved vertically with respect to frame (3). Spring (5) with moulding (4) is adjusted by a shaft (19) mounted for movement with its axis parallel to the plane of the seat back. Shaft (19) can be directly or indirectly coupled by transmission elements (18, 17) to a tapped collar (13) or a toothed rack (25). An indicator mechanism (40, 40a) may be provided to indicate the position of the moulding (4) at any time, a scale plate (41) being connected to the collar (13 ) and the pointer (42) being connected to a threaded pin. |
