| 摘要 |
Disclosed is a method of manufacturing an airbag hollow body, and hollow body manufactured by the method. The airbag hollow body is manufactured from a blank taken from a continuous strip of material, in particular synthetic-fibre textile fabric. The shape of the blank is chosen so that, provided the locations of the blanks in the strip of material are selected with care, no or only very little waste is left. In Variant 1 of the method, triangular blanks (10) are cut out of a strip of single-layer material (22) from intermeshed locations.There is therefore no waste. Each triangle is then folded in a particular way and the edges of the blank joined, in particular sewn, together. In Variant 2, both triangles (103) and additional pieces (109) designed to be attached to the triangles are cut from two different strips of single-layer material, in each case from intermeshed locations, producing very little waste, and then folded and sewn together. In Variant 3, trapeziums (142) are cut from intermeshed locations in a strip of two-layer material (140). Both of the sloping sides (148) and the shorter (146) of the two parallel sides of the trapeziums are held together by woven strips (146w, 148w, 154w). The long side is left open. The result is a cup-shaped airbag (158). Additional pieces (150, 152, 164) may be sewn on. The individual edges (kc, kd, etc.) along the open side are then sewn together. From trapeziums (180a, 180b) with relatively steeply angled sides and additional rectangular pieces (196, 197) cut from a second strip of material, an approximately shoe-shaped airbag can be formed, the additional pieces (196, 197) being used to attach the airbag round the gas generator. In Variant 4, a rectangular cushion is formed from a strip of two-layer material, the corners of the rectangle being rounded (230). Extending from the rounded corners towards the centre of the rectangle are cut-outs (232) used to give the cushion its shape. The two layers of material are pulled apart from each other, and the edges on both sides of each cut-out are sewn to each other, as are the edges of the cut-outs in the other layer. In Variant 5, approximately square blanks (302, 329) are cut out of a strip of single-layer material. The airbag hollow body is produced by folding and sewing. In the vicinity of the gas-generator mouth (321), the airbag hollow body is strengthened by sewing on material or by using a stronger weave. |
