DOOR BOTTOM AIR-TIGHT DEVICE

PROBLEM TO BE SOLVED: To provide a door bottom airtight device for lowering a seal member so as to fill a clearance between a lower portion of a door and a floor surface when the door is in a closed position, the door bottom airtight device being configured to be easy in timing for raising and lowering the seal member and adjusting a lower clearance with the floor surface.SOLUTION: An intermediate portion of a leaf spring 13 is connected to an elevating body 12 having a sealing member 11 on its lower surface, and on both ends of the leaf spring, a suspension side slider 8 and a door end side slider 9 are fixed which are movable in the depth direction of the door 1. On the suspension side of a case, there is provided a camshaft 15 having a control cam 23 whose radius from the center to the circumference surface changes from the maximum to the minimum and with which the tip of the suspension side slider 8 abuts. When opening and closing the door, the suspension side slider 8 moves in the depth direction by the control cam 23, and then the vertically moving body moves up and down. The position of the door end side slider 9 can be moved from the front end of the door in the depth direction, which can adjust upper and lower set positions of the lifting body to adjust a lower clearance.SELECTED DRAWING: Figure 1 【課題】扉が閉鎖位置にあるとき扉の下部と床面の間隙を塞ぐようシール部材を降下させるドアボトムの気密装置において、シール部材の昇降のタイミングや床面との間の下チリの調整が容易なドアボトムの気密装置を提供する。【解決手段】下面にシール部材１１を有する昇降体１２に、板ばね１３の中間部を連結し、この板ばねの両端に、扉１の見付方向に移動可能な吊元側スライダー８と戸先側スライダー９を固定する。ケースの吊元側には、中心から周面までの半径が最大から最小に変化する制御カム２３を有するカム軸１５があり、吊元側スライダー８の先端が当接する。扉を開閉する際、吊元側スライダー８は制御カム２３により見付方向に移動し、昇降体が上下動する。戸先側スライダー９の位置は、扉の戸先側小口から見付方向に移動させることができ、昇降体の上下の設定位置を調整して下チリの調整ができる。【選択図】図１