| 摘要 |
PCT No. PCT/FI89/00169 Sec. 371 Date Mar. 8, 1991 Sec. 102(e) Date Mar. 8, 1991 PCT Filed Sep. 8, 1989 PCT Pub. No. WO90/02502 PCT Pub. Date Mar. 22, 1990.The present device is a locking mechanism for a piece of seating furniture that is continuously foldable, comprising a cylindrical bushing (3), which is fixed to the frame of the piece of seating furniture and which is provided with a pair of diagonally arranged holes (4) for an upwards inclined carrier bar (6), which is fixed to the seat part, and comprising a locking member (7) jointly operative with the carrier bar (6) as well as a control member (8) acting upon the locking member (7). The device is characterized in that the holes (4) are, at least in the peripheral direction, considerably larger than the cross section of the carrier bar (6), that inside the bushing (3) an inner bushing (12) is fitted freely turnably, the bushing (12) being provided with diagonally placed holes (13) for the carrier bar (6) and having a closed end (14), that the locking member (7) is spring-loaded and provided with a through hole (15) for the carrier bar (6) and pivotally mounted in the inner bushing (12), the locking member (7), when in the normal position, locking the movement of the carrier bar (6) in the direction of the spring force.
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