Abstract: Bent portions (28a and 28b) substantially perpendicular to the base plane of a door inner panel (4) are formed by bending at a door inner panel portion near a portion where a door opener handle is disposed, attaching portions (16a and 16b) facing the bent portions (28a and 28b) of the door inner panel (4) are provided in a reinforcement member (12) interposed between the door inner panel (4) and a door outer panel (5) to reinforce the portion where the door opener handle is disposed, and the attaching portions (16a and 16b) of the reinforcement member (12) and the bent portions (28a and 28b) of the door inner panel (4) are joined together in a state in which they are in slidable contact with each other.

Abstract: The present invention relates to a car providing a sliding door comprising guide rails mounted along an entry opening formed on the front half section of a car body and a sliding door used as a front door to be slid through a roller assembly to be engaged with each guide rail when it is opened or shut. In this car, the sliding amount of the sliding door is regulated so as to disable the rear end of the sliding door to be projected from the rear end of a car body when it is opened. And, in order to enable the entry opening opening to be fully opened, an auxiliary handle is providced in addition to an outside handle and an inside handle. Further, the invention also relates to improvement of opening or shutting mechanism and structure of the sliding door.

Abstract: The present invention relates to a structure of a lower rail for guiding a slide door and a mounting structure to a side sill. A part of the side sill is projecting externally and covers the upper part of the lower rail. The top end portion of the lower rail is bent inside the side sill and is fastened to the rail housing box and the floor side panel. The roller supporting member for supporting the roller and the arm being fastened to the door are connected by means of a pin. A groove is formed on the bottom wall of the rail housing box corresponding to the moving range of the pin, and the height of the rail housing box is reduced by letting the above-mentioned pin face inside the groove. And, both the stopper at the rear end portion of the rail and the leaf spring are formed independently each other, then the stopper is inserted into an opening of a rail and the leaf spring is assembled to the rail from above the rail so that the both may be assembled with one screw from above the rail.

Abstract: The present invention resides in a motor-vehicle having a sliding door, wherein the sliding door is used as a front door of the motor-vehicle, and the sliding door has its front portion formed with an inclined configuration to match the shape of the front pillar, whereas upper, center and lower guide rollers are provided at the sliding door and upper, center and lower guide rails which serve to support these guide rollers are provided along the side panel, and wherein the upper guide rail is provided behind the lower guide rail and the upper guide rail is extended upto an area which is situated more backwardly than the passenger access opening.