公开(公告)号：US20020197430A1

公开(公告)日：2002-12-26

申请号：US10226209

申请日：2002-08-23

Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA

Inventor： Toshiro Ijima

IPC: B29C059/00 ,  B32B001/08

CPC classification number: B21D11/08 ,  B29C47/0023 ,  B29C47/0033 ,  B29C47/0038 ,  B29C47/0057 ,  B29C49/0021 ,  B29C53/083 ,  B29C53/30 ,  B29L2023/183 ,  Y10S138/11 ,  Y10T428/139

Abstract: Bellows-shaped pleats are formed by a corrugator on bellows portions of a cylindrical hose formed by extrusion from a thermoplastic resin. The height of the pleats of the hose is uniform in a circumferential direction, and the numbers of the pleats on the bellows portions are different from one another. When water is encapsulated in the hose and the hose is heated, the pleats having different circumferential shapes from one another are stretched by the pressure of a vapor generated from the water, whereby the bellows portions of the hose are bent automatically with the portions corresponding to generating lines and free from the pleats being on an inner side. The bending angle at that time is determined depending on the numbers of the pleats. Thus, it is possible to provide a resinous hose at a low cost, which is formed, so that even if the hose is used in a high-temperature and a high-pressure environment, the bent shape of the hose can be maintained over a long period of time.

Abstract translation: 波纹状褶皱由波纹机在由热塑性树脂挤出形成的圆筒形软管的波纹管部分上形成。 软管的褶皱的高度在圆周方向上是均匀的，并且波纹管部分上的褶皱的数量彼此不同。 当水被包封在软管中并且软管被加热时，具有不同周向形状的褶皱彼此之间的褶皱被从水产生的蒸汽的压力拉伸，由此软管的波纹管部分自动弯曲，部分对应于 生成线条并且不在内侧的褶皱。 此时的弯曲角度取决于褶皱的数量。 因此，可以以低成本提供形成的树脂软管，使得即使在高温和高压环境中使用软管，也可以将软管的弯曲形状保持在 很长一段时间