| 摘要 |
PROBLEM TO BE SOLVED: To provide chair furniture put in action to a considerable extent without inclination by an operating driving device disposed at the center under a seat part. SOLUTION: A body is provided, and a base plate 1 of an adjusting fitting is fitted to a side wall of the body. First operating levers 13 are articulated to the base plate 1, and the other end of each operating lever 13 is articulated to a piece 17 disposed under the rear side end of a seat part 2 directly through a second operating lever 16. The first operating levers 13 are connected to each other by a lateral bar 18 between the end side articulated positions 14, 15. A rigid third operating lever 19 is projected from the lateral bar 18, and the operating lever 19 is articulated to a push bar 12 of an operating driving device 8.
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