JPH0139351Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stopper structure for a sliding door for an automobile.

As shown in FIG. 1, in an automobile equipped with a sliding door 1, it is necessary to provide a stopper for positioning the sliding door 1 when it is fully opened and for buffering backward inertia. It is preferable to provide the stopper at the height of the sliding door 1, that is, near the center of the door 1 in the vertical direction, but there are structural difficulties such as the stopper protruding toward the interior of the vehicle. It is usually installed in the lower guide section (Utility Model No. 53-11123)
(see publication).

However, if the stopper is provided at the upper or lower part of the slide door 1, which is far away from the height of the center of gravity G of the sliding door 1 as described above, for example, if the stopper is provided at the lower part, the lower part of the door 1 will be moved as shown by the chain line 1' in Figure 1. When the door hits the stopper, the upper part will overrun due to inertia, and conversely, if the stopper is attached to the upper part, the lower part of the door will greatly overrun when the door is fully opened. The purpose of the present invention is to prevent the above-mentioned overrun when the sliding door is fully opened, and the embodiments shown in FIGS. 2 to 4 will be described below.

In Figures 2 to 4, reference numeral 2 denotes a lower rail provided along the lower edge of the door opening of the vehicle body, and a lower arm 3 attached to the lower front end of the sliding door 1 rotates around a substantially horizontal axis 5. A load roller 4 and a roller 6 that rotates around a substantially vertical axis 7 are attached, and the load roller 4 rolls on the support surface 21 of the lower rail 2, and the roller 6 rotates on the inner and outer guide surfaces of the lower rail 2. It is fitted between 22 and 23 to regulate the position of the sliding door 1 in the vehicle width direction.

Although not shown in the drawings, a roller is provided at the top of the front end of the sliding door, which fits into an upper rail provided along the upper edge of the door opening of the vehicle body and guides and supports the top of the sliding door. At the center of the rear end, there is a guide member such as a roller that fits into the center guide rail provided on the outer surface of the rear of the vehicle door opening and guides and supports the rear of the door. It is guided and supported at three points at the center of the end.

A stopper 8 made of an elastic material such as rubber is attached to the rear end of the lower rail 2 by a bracket 9, so that the load roller 4 comes into contact with the stopper 8 to restrain the rearward sliding of the sliding door 1 and to buffer the backward inertia force.

Also, on the lower rail 2, there is a checker 10 made of a plate spring material, which has a protrusion 10a that the roller 6 rides over just before the sliding door 1 reaches the fully open position, and elastically contacts the roller 6 at the fully open position to limit its forward movement. is the mounting plate 11
When the sliding door 1 is opened, the roller 6 elastically deforms and overcomes the protrusion 10a of the checker 10, and then the load roller 4 hits the stopper 8, regulating the fully open position and buffering the backward inertia of the door. In addition, the door is prevented from rebounding when the load roller 4 hits the stopper 8 made of an elastic material by the engagement between the roller 6 and the protrusion 10a of the checker 10.

At the lower edge of the vertical wall surface 11a of the mounting plate 11 for fixing the checker 10 to the lower rail 2, there is a load roller attached to the lower edge of the vertical wall surface 11a, as shown in FIGS. 4. A convex portion 11b is integrally formed to face the upper surface of the lower arm 3 to which the roller 6 and the like are attached in a substantially sliding contact or very close state.

Reference numerals 12 and 13 designate bolts and nuts for fixing the mounting bracket 9 of the stopper 8 and the mounting plate 11 of the checker 10 to the lower rail 2 by tightening them together.

According to the present invention having the above configuration, when the slide door is fully open, the load roller 4 hits the stopper 8 to regulate the fully open position and buffer the door's backward inertia, and the roller 6 engages with the protrusion 10a of the checker 10. As mentioned above, this prevents the door 1 from rebounding, and furthermore, when the door is fully opened, the checker 10
Convex portion 1 formed on the mounting plate for attaching the
1b is in sliding contact with or closely faces the upper surface of the lower arm 3 for mounting rollers fixed to the lower front end of the sliding door 1, so that the lower front end of the door 1 springs up due to the convex portion 11b of the plate 11 and the lower arm 3. The overrun of the upper part of the door as shown by the chain line 1' in FIG. 1 can be greatly reduced.

As described above, according to the present invention, it is possible to slide without adding any new parts by using an extremely simple structure in which the checker mounting plate is integrally formed with a protrusion that slides on or closely faces the upper surface of the lower arm. This can significantly reduce the overrun when the door is fully opened, and together with the low cost, it can bring great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a side view of an automobile equipped with a sliding door when the sliding door is fully opened, and FIG. 2 is a detailed view of section A in FIG. 1, showing an embodiment of the present invention. . 3 and 4 are sectional views taken along lines BB and CC in FIG. 2. 1...Sliding door, 2...Lower rail, 3...
...Lower arm, 4...Load roller, 6...Roller, 5, 7...Shaft, 8...Stopper, 9...Bracket, 10...Checker, 11...Checker mounting plate, 11a...Vertical wall surface, 11b...Protrusion.

Claims (1)

[Scope of utility model registration request] A load roller and a roller for regulating the position in the vehicle width direction are installed on the lower arm fixed to the front lower part of the sliding door, and each of the above rollers is fitted so as to be able to roll within the lower rail provided at the lower edge of the door opening of the vehicle body. The lower rail is configured to guide and support the lower part of the sliding door, and the lower rail is provided with a stopper made of an elastic material that the load roller comes into contact with when the sliding door is in the fully open position, and when the load roller comes into contact with the stopper. A checker made of a spring material that elastically engages with the vehicle width direction position regulating roller to prevent the sliding door from rebounding is attached to the lower rail via a checker mounting plate, and the load roller is attached to the checker mounting plate. A stopper structure for a sliding door for an automobile, characterized in that a convex portion is formed in sliding contact with or closely opposing the upper surface of the lower arm to restrain the front part of the sliding door from jumping up when the lower arm contacts the stopper.