Kabushiki Kaisha Kotobuki

Fumihiko Suzuki

Toshihiko Kimura

An apparatus for turning up and down seats for a telescopic seating system includes as essential components a foot on which a single seat is fixedly mounted, a base frame having a support shaft inserted therethrough in the transverse direction so as to allow the foot to be turned up and down about the support shaft, a center shaft extending through the base frame in parallel with the support shaft and including an extension outside of the housing, a guide arm turnably mounted on the extension of the center shaft, a pair of first coil springs mounted on the support shaft within the interior of the base frame so as to allow the foot to be normally biased in the turning-up direction, a second coil spring mounted on the extension of the center shaft so as to allow the guide arm to be normally turnably biased in the forward direction, and a pair of tongue-shaped projections fixedly mounted on the center shaft within the interior of the base frame, a link plate bridged between a front shaft on the foot and a rear shaft on the tongue-shaped projections. When the telescopic seating system is in use, turning movement of the guide arm induced by forward movement of a movable platform at the lower stage is transmitted to the foot via the center shaft, the tongue-shaped projections and the link plate, whereby the foot is turned up to assume the upright standing attitude.

Apparatus for turning up an down seats for telescopic seating system

An apparatus for turning up and down a spectator's seats includes a foot member which is turnably supported within a base frame fixedly mounted on the movable platform. A pair of Y-shaped lock links are supported turnable about a support shaft which extends throught the fore end thereof. The upper portions of the lock links rotatably support a locking and unlocking roller therebetween and this roller serves as a weight. On the other hand, the lower portions of the lock links are formed with a hook respectively. A locking angle is fixedly secured to both the side walls of the base frame at the position located behind foot member in such a manner that the hooks are engaged to the locking angle to firmly hold the foot member in the upright standing posture when the roller is lowered by turning movement. Engagement of the hooks to the locking angle can be released by abutment of the roller against the front nose on the upper movable platform during backward movement of the first-mentioned movable platform. The foot member has a shaft about which it is adapted to turn and the shaft has spring means mounted thereon on both the sides of the foot member to normally turn up the foot member toward the upright standing posture. The base frame is provided with stopper bolts adapted to inhibit the seat from turning backwardly as well as adjustment bolts adapted to inhibit it from turning forwardly.

Apparatus for turning up and down seats for a telescopic seating system

A new apparatus for turning up and down spectators' seats for a telescopic seating system of the type including a plurality of movable platforms which are arranged in tiers is disclosed. The apparatus essentially comprises a frame fixedly mounted on a movable platform, a foot member fixedly secured to the housing of a seat, a stopper link turnably supported on the foot member, an unlocking member turnably supported on the frame and a leaf spring operatively connected to the rear end of the stopper link. The foot member is formed with projections at the rear end part thereof which are adapted to abut against a front nose of the adjacent upper movable platform as the first-mentioned movable platform is displaced forwardly to the extended position. The foot member assumes the upright standing position by turning up on the frame together with the housing of the seat. The foot member is kept in the upright standing state while the stepped portions on the stopper link are engaged to the rear ends of the stopper pieces of the frame. As the movable platform is displaced backwardly to assume the retracted position, the inclined surface on the unlocking member abuts against the front nose of the adjacent upper movable platform whereby the stopper link is released from the engaged state and the foot member is then caused to turn down under the effect of resilient force of the leaf spring.

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Tokyo, Japan

Fumihiko Suzuki