Collision protection device, in particular for occupants of vehi

Details Collision protection device, in particular for occupants of vehi Collision protection device, in particular for occupants of vehi

1994-12-13

1997-03-25

Johnson, Brian L.

Land vehicles

Wheeled

Attachment

2807431, B60R 2116

Patent

active

056137087

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The invention relates to a collision protection device, in particular for occupants of vehicles, particularly of motor vehicles, consisting to a cushion or covering cap, an airbag, a fastening part (e.g. metal holding sheet), electronic or mechanical devices, and a gas generator, whereby the airbag, which is made of fabric (e.g. polyamide fabric) with or without a coating, in turn consists of a fastening part on the gas inflow side, such part being equipped with a fire protection, if need be, a top part (on the person impact side), and catch belts, whereby the ends of the catch belts are connected with other construction components or with each other (joints).
2. The Prior Art
Airbags for the airbag system in motor vehicles according to the state of the art frequently have catch belts, which influence both the unfolding behavior and the shape of the airbag in the inflated condition to the extent that a flattening in the direction of the vehicle occupant to be protected enhances the intended protective function for such occupant. This particularly applies to a special degree also in case of a laterally offset vehicle collision. Known designs of such airbags have one or several catch belt(s) (U.S. Pat. No. 5,033,771).
It is known that the catch belts, for production engineering reasons, can be divided, and thus have to be connected again across their free length by suitable joining methods. Furthermore, it is known that the catch belts are connected at their ends with other construction components (e.g. fire protection, reinforcing inserts; U.S. Pat. No. 5,186,489) of the airbag.
In order to connect the catch belts at their free ends with each other or with other construction components of the airbag with exact positioning and process safety, an exact positioning and fixation of the catch belt ends, as well as of the other construction components relative to each other, is absolutely required prior to the joining process.


SUMMARY OF THE INVENTION

Now, according to the characterizing part of claim 1 or 2, the solution of the above problem consists in that the catch belts or other construction components of the airbag recess(es)(variation II),
According to variation I, the perforation can consist of one or several holes, whereby such holes are usefully circular and/or polygonal. It is particularly advantageous if the perforation or the holes are positioned in such a way that they impair the strength of the catch belts or of the other construction components as well as the transmission of force to the lowest possible degree.
According to variation II, the projections or recesses have round and/or polygonal shapes. In this case too, the projections and/or recesses are usefully positioned and formed in such a way that they impair the strength of the catch belts or of the other construction components, as well as the transmission of force to the lowest possible extent.


BRIEF DESCRIPTION OF THE DRAWINGS

Now, the invention is explained in the following on exemplified embodiments by reference to schematic drawings, in which:
FIG. 1 shows a schematic sectional representation of an airbag consisting of a top part and a bottom part, catch belts and their joints;
FIGS. 2a, b show a catch belt connection with a perforation, whereby FIG. 2a shows the free catch belt ends, which are connected with each other in FIG. 2b; and
FIGS. 3a, b show a catch belt connection, with projections and recesses shown on its outer edges, whereby FIG. 3a shows the free catch belt ends, which are connected with each other in FIG. 3b; and
FIGS. 4a and 4b show a catch belt connection with a perforation, whereby FIG. 4a shows the free catch belt ends, which are connected with each other in FIG. 4b; and
FIGS. 5a and 5b show a catch belt connection, with projections and recesses shown on its outer edges, whereby FIG. 5a shows the free catch belt ends, which are connected with each other in FIG. 5b.
The following list of reference numerals applies in view of said figures:


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REFERENCES:
patent: 3879056 (1975-04-01), Kawashima et al.
patent: 4828286 (1989-05-01), Fohl
patent: 5033771 (1991-07-01), Miyauchi et al.
patent: 5186489 (1993-02-01), Imai
patent: 5226671 (1993-07-01), Hill
patent: 5316337 (1994-05-01), Yamaji et al.
patent: 5393092 (1995-02-01), Charns et al.

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