JP3405272B2 - Sliding door support structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a sliding door in an automobile. 2. Description of the Related Art As shown in FIG. 4, a sliding door for opening and closing a doorway formed on a side surface of a vehicle body is a sliding door D.
The guide rollers 1A, 1B and 1C provided at the front end upper and lower portions and the rear end center portion are respectively provided with three guide rails 2A and 2B disposed at the upper and lower portions of the entrance S and at the center of the side of the vehicle body behind the entrance. 2C, it is slidably supported. FIG. 5 shows a support structure at an upper front end of a slide door. A guide roller 1A is mounted on a top end of a roller bracket D1 attached to the slide door D so as to be rotatable about a vertical axis. It is engaged with the upper guide rail 2A and is guided and supported in the vehicle width direction. The upper guide rail 2A is formed to have a substantially U-shaped cross section that opens downward, has an inward flange 21 at an outer opening end, and has a linear portion extending along the upper part of the entrance S, and has a front end at the front end. The sliding door D has a curved portion that curves inward in the vehicle width direction, whereby the sliding door D is guided by the bending portion at the beginning of opening and swings outward in the vehicle width direction, and then moves rearward along the side surface of the vehicle body. It is configured to move. The lower front end and the middle rear end of the sliding door D have basically the same structure as described above except that the guide rollers 1B and 1C each have a supporting roller for supporting the load of the sliding door D. The description is omitted. The upper guide rail 2A has a notch 2 for incorporating the guide roller 1A into a linear portion thereof.
2 are provided. The notch 22 is formed by notching a part of the flange 21 of the upper guide rail 2A, and is located on the movement locus of the guide roller 1A. [0005] In the above-described conventional support structure, a cutout portion 22 is provided in the upper guide rail 2A, and the cutout portion 22 is located on the movement locus of the guide roller 1A. Therefore, the guide roller 1A may come off from the upper guide rail 2A due to abnormal movement of the door when the slide door is opened and closed, and the slide door D may fall off. It should be noted that eliminating the notch portion 22
There is a problem in workability of assembling the slide door D. The present invention has been made in view of the above problems, and has as its object to provide a slide door support structure capable of preventing the slide door from falling off without impairing the workability of assembling the slide door. Is what you do. According to the present invention, an upper guide rail having a substantially U-shaped cross section and having a downward opening and an inward flange at an outer opening end is provided along an upper portion of a doorway. ,
The upper guide rail is provided with a cut-out portion in which a part of a flange is cut out, and a guide roller attached to an upper portion of the slide door is movably engaged with the upper guide rail from the cut-out portion. In the sliding door support structure for guiding the opening and closing of the door, the front and rear ends are fixed to the upper guide rail on the outer surface of the upper guide rail immediately above the notch, and the intermediate portion has a predetermined gap with respect to the upper guide rail. And separate the brackets,
Utilizing the gap between the bracket and the upper guide rail, a stopper for preventing the sliding door from dropping is engaged with the bracket, and the stopper is connected between the bracket and the upper guide rail.
A plate-shaped main body inserted into the gap; and a lower end of the main body.
Shape that approximately matches the flange of the upper guide rail
Projecting from the formed bent part and the above gap at the upper end of the main body part
Locking claw formed on the part
You. According to the slide door support structure of the present invention, the guide roller is moved from the cut-out portion of the upper guide rail in the same manner as in the prior art in a state where the stopper for preventing the slide door from dropping is not engaged with the bracket. Assemble to the guide rail. Then, by using a gap between the bracket and the upper guide rail, a stopper for preventing the slide door from dropping is engaged with the bracket to prevent the slide door from dropping due to the detachment of the guide roller from the notch. it can. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a support structure of an upper front end of a slide door according to the present invention, in which a solid line shows a slide door open state and a chain line shows a slide door closed state. FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. 3 is an exploded perspective view of the upper guide rail and the stopper for preventing the sliding door from falling off. still,
The upper guide rail 2A disposed along the upper part of the entrance S and the guide roller 1A mounted on the upper front end of the slide door D are the same as those shown in FIG. Is omitted. The upper guide rail 2A is provided with a bracket 3 for engaging a stopper 4 for preventing a sliding door from dropping, which will be described later, on an outer surface immediately above the notch 22. The bracket 3 is made of a metal plate that is long in the front-rear direction, and the intermediate portion 31 is formed by bending one step higher.
The front and rear ends 32 and 33 are fixed to the outer surface of the upper guide rail 2A by spot welding. As a result, a predetermined gap s is formed between the intermediate portion 31 of the bracket 3 and the upper guide rail 2A. In the case of the present embodiment, the lower edge of the middle portion 31 of the bracket 3 is slightly expanded outward to form a guide for inserting the stopper 4 described later. A stopper 4 is attached to the bracket 3 to prevent the slide door from falling off by using the gap s. The stopper 4 is made of an elastic metal conductive plate, and has a plate-shaped main body 41 inserted into a gap s between the bracket 3 and the upper guide rail 2A, and a flange 21 of the upper guide rail 2A at a lower end of the main body 41. A bent portion 42 formed in a substantially matching shape, two retaining claws 43, 43 formed by cutting and raising a portion protruding from the gap s at the upper end of the main body portion 41, and a main body portion 41, two elastic pieces 44, 44 for stopping the backlash formed by cutting and raising the portions located in the gap s on both side ends. In the figure, 45 and 45 are ribs for reinforcement. In the above configuration, when assembling the guide roller 1A into the upper guide rail 2A, the stopper 3 for preventing the sliding door from dropping is not engaged with the bracket 3 provided on the upper guide rail 2A. The guide roller 1A is assembled into the upper guide rail 2A from the cutout portion 22 of the upper guide rail 2A. Thereafter, a stopper 4 for preventing the sliding door from dropping is engaged with the bracket 3 using the gap s between the bracket 3 and the upper guide rail 2A. In engaging the stopper 4, it is only necessary to insert the main body 41 of the stopper 4 into the gap s from below.
As a result, the locking claws 43 of the stopper 4 are locked to the bracket 3 and are prevented from falling off. In this state, the bent portion 42 of the stopper 4 formed in a shape substantially coinciding with the flange 21 of the upper guide rail 2A causes the slide door D to be disengaged by the guide roller 1A coming off from the notch 22 of the upper guide rail 2A. Shedding is prevented. The stopper 4 can be detached from the bracket 3 by pressing the locking claws 43, 43 from outside to release the locking with the bracket 3. According to the slide door support structure of the present invention, the front and rear ends are fixed to the upper guide rail on the outer surface of the upper guide rail immediately above the cutout portion of the upper guide rail, and the intermediate portion is the upper. Since a bracket is provided with a predetermined gap with respect to the guide rail, and a gap between the bracket and the upper guide rail is used to engage the stopper for preventing the slide door from falling off the bracket, In a state where the stopper is not engaged, the guide roller can be assembled into the upper guide rail from the cutout portion of the upper guide rail as in the related art. For this reason, the assembling workability of the slide door is not impaired. When the stopper is engaged with the bracket,
It is possible to prevent the slide door from dropping due to the detachment of the guide roller from the notch of the upper guide rail. Further, a plate-shaped main body inserted into a gap between the bracket and the upper guide rail, a bent portion formed at a lower end of the main body with a shape substantially matching a flange of the upper guide rail, A stopper consisting of a retaining claw formed at a portion protruding from the gap at the upper end can be manufactured at a low cost only by processing a thin metal plate, and can be formed at a narrow portion between the upper guide rail and the slide door. Can be applied. Further, since the slide door can be easily attached and detached, the assemblability of the slide door is not hindered.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a support structure of an upper front end of a slide door according to the present invention. FIG. 2 is a view taken in the direction of arrow A in FIG. FIG. 3 is an exploded perspective view of an upper guide rail and a stopper for preventing a door from falling off. FIG. 4 is a perspective view showing a support structure of the slide door. FIG. 5 is a cross-sectional view showing a conventional support structure for an upper front end of a slide door. [Description of References] D Slide door 1A Guide roller 2A Upper guide rail 21 Flange 22 Notch 3 Bracket 4 Stopper 41 for preventing sliding door from falling off Main body 42 Bending portion 43 Locking claw

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E05D 15/06-15/06 125 B60J 5/06

Claims (1)

(57) [Claim 1] An upper guide rail, which is open downward and has an inward flange at an outer open end, and has a substantially U-shaped cross section, is disposed along the upper part of the entrance and exit. For the upper guide rail,
A notch is formed by notching a part of the flange, and a guide roller attached to the upper part of the slide door is movably engaged with the upper guide rail from the notch to guide the opening and closing of the upper part of the slide door. In the slide support structure, a bracket is provided on the outer surface of the upper guide rail immediately above the notch, the front and rear ends of which are fixed to the upper guide rail, and the middle portion is separated from the upper guide rail by a predetermined gap. By using a gap between the bracket and the upper guide rail, a stopper for preventing the slide door from falling off is engaged with the bracket, and the stopper is attached to the bracket and the upper guide rail.
A plate-shaped main body inserted into the gap with the guide rail;
At the lower end of the body, approximately the same as the upper guide rail flange
The bent part formed into the matching shape and the top of the body
Engagement lock formed at the part protruding from the gap
A support structure for a sliding door, comprising a claw .