JPS6056652B2 - safety belt device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a passive safety belt device that is automatically attached and released.

This type of safety belt device uses one end of the shoulder belt,
Attach to the anchor attached to the rear upper part of the door, and attach the other end to the
Types that are attached to the center of a vehicle or attached to a tractor are known.

In this case, the belt moves forward as the door is opened, but since the amount of movement is small, the belt remains close to the seat. Therefore, the belt gets in the way when getting on and off the vehicle, and it is necessary to push the belt away when getting on the vehicle. Furthermore, the end of the shoulder belt on the door side is attached to an anchor attached to the loop side, and a belt guide drive/device is used to forcibly guide the shoulder belt in the longitudinal direction of the vehicle as the door opens and closes. Belt devices are known, but they are complex and expensive because they include a belt guiding drive.

The purpose of the present invention is to prevent the belt from becoming a hindrance to getting on and off the vehicle.
Another object of the present invention is to provide a safety belt device with a simple structure in which the belt is automatically attached and released in response to opening and closing of a door without using a belt guide drive device. Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows a safety belt device for a motor vehicle with a shoulder belt 1 running diagonally across.

One end of the shoulder belt 1 is attached to an anchor 3 attached to the rear upper part of the door 2, and the other end is attached to the side of the seat 4 on the vehicle center side or the vehicle floor 5 in the center of the vehicle, or attached to the tractor 6. It is attached. This Nori tractor 6 is
This is a well-known device that elastically winds up the belt and normally allows the belt to be freely pulled out, but in the event of a collision, the belt locks and restrains the occupant. Shoulder belt 1
is inserted through the hanger 7 for hanging it,
This hanger 7 is movably attached to a slider 8. In FIG. 2, the hanger 7 is attached to the slider 8 via a chain-like member, but it may also be attached via a ball joint or a lobe. Furthermore, although the slider 8 in FIG. 2 is a square prism, it may also be spherical or cylindrical, and may be provided with roller bearings. A guide rail 11 is attached to the inner surface of a roof side panel 9 and a part of the inner surface of a front pillar 10 of an automobile, and the slider 8 is inserted into a guide groove 12 of the guide rail.

The inner surface of the guide groove 12 is coated with Teflon, polyurethane resin, or the like to reduce friction with the slider 8. A knee pad 14 is provided in front of the seat 4.

This serves to support the occupant from sliding forward from the seat 4 in the event of a collision. The two-point safety belt device having the above structure operates as follows.

First, when the door 2 is closed, the slider 8 is located at the rear end of the guide rail 11, and the shoulder belt 3 1 is wound around the tractor 6.

When the door 2 is opened, the distance between the anchor 3 and the tractor 6 becomes longer, so the shoulder belt 1 is pulled out from the tractor 6.

At this time, since the shoulder belt 1 is elastically pulled by the tractor 6, the shoulder belt 1 tends to be stretched so that the distance from the tractor 6 to the anchor 3 is the shortest. Therefore, the slider 8 moves forward along the guide rail 11, and the belt is moved forward by the slider 8 while being suspended by the hanger 7. As a result, the gap between the seat 4r4 and the shoulder belt 1 widens, making it easier to get on and off the vehicle. When the door 2 is closed, the shoulder belt 1 tends to be stretched over the shortest distance due to the elastic tensile action of the tractor 6, so that the slider 8 moves in the opposite direction from when the door is opened.
・The shoulder belt 1 moves rearward within the guide groove 12 of the rail 11 and reaches the occupant restraint position.

FIG. 3 shows a three-point safety belt device comprising a shoulder belt 1 and a waist belt 21.

One end of the waist belt 21 is attached to the rear lower part of the door or attached to the tractor 22, and the other end is attached to the shoulder belt 1 at a point 23.
is sewn on. Other configurations regarding the shoulder belt 1 are as follows.
Same as in the figure. As the door opens, the waist belt 21 is pulled by the shoulder belt 1 through the sewn part 23 and is lifted forward and upward in the same way as the shoulder belt 1, so that it does not interfere with getting on and off the vehicle. As explained above, the present invention attaches one end of the shoulder belt to the rear upper part of the door, guides the hanger inserted through the shoulder belt so that it can move freely along the guide rail, and thereby the shoulder belt is moved when the door is opened. Since the vehicle is moved forward by its own tension while being lifted up by the hanger, the shoulder belt does not interfere with getting on and off, making it easy to get on and off.

Furthermore, since there is no belt guide drive device for forcibly moving and guiding the belt, the structure is extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a two-point safety belt device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the belt guiding guide rail shown in FIG. 1, and FIG. 3 is a diagram showing the present invention. FIG. 3 is a diagram showing a three-point safety belt device according to another embodiment of the present invention. 1...Shoulder belt, 2...Door, 3...
...Anchor, 6,22...Retractor, 7
...Hanger, 8...Slider, 9.
...Roof side panel, 11 ... Guide rail, 12 ... Guide groove, 21 ... Waist belt.

Claims (1)

[Claims] 1. One end of the shoulder belt 1 is attached to an anchor 3 attached to the rear upper part of the door 2, the other end is attached to a retractor 6 attached to the center of the vehicle, and the other end is attached to the retractor 6 attached to the center of the vehicle. A guide rail 11 is mounted along the inner side, along which the slide 8 is slidably guided, the slide 8 being guided without being driven, and in addition a shoulder belt attached to the slide. A safety belt device characterized in that a hanger 7 through which a hanger 1 is inserted is movably attached. 2. One end of the shoulder belt 1 is attached to the anchor 3 attached to the rear upper part of the door 2, the other end is attached to the retractor 6 attached to the center of the vehicle, and one end of the shoulder belt 21 is attached to the anchor 3 attached to the rear upper part of the door 2.
It is attached to the retractor 22 attached to the rear lower part, the other end is sewn to the shoulder belt 1, a guide rail 11 is attached along the inner surface of the loop side panel 9, and the slider 8 can be slid along this guide rail. At this time, the slider 8 is not driven but is only guided.
Furthermore, a hanger 7 into which the shoulder belt 1 is inserted is inserted into this slider.
A safety belt device characterized by a movably attached safety belt device.