| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable fitting work to be properly performed according to change in width size of both doors and length of door opening upper frames even if the change is present, and to achieve small-sized compactification of a fitting state and excellent design.SOLUTION: A pair of left and right actuation unit cases (43), in which a preceding closing door receiving actuation unit (A1) and a subsequent closing door receiving actuation unit (A2) are separately and independently housed respectively, are mounted to a door opening upper frame (10) by horizontal machine screws (45) from the front, and projective elements (53) of first and second rotation link arms (47) kept in a rotation energization state of overhanging forward from respective actuation unit cases and first and second projective element receiving recessed grooves (68), (73) formed in accordance with first and second slide plates (B1), (B2) of a link bar (L) extending along the left and right directions of the door opening upper frame are respectively engaged with each other so as to be freely engaged and disengaged without interposing a connecting pin. Thus, a rotating action of the first and second rotation link arms is converted to a sliding action by which link bars of the rotation link arms move linearly.</p> |
