公开(公告)号：WO2021002837A1

公开(公告)日：2021-01-07

申请号：PCT/US2019/040068

申请日：2019-07-01

Applicant: MSSC INC

Inventor： YOSHIOKA, Jun

IPC: F16F1/366 ,  B29C48/15 ,  B29C53/32 ,  B29C70/24 ,  B29C70/70 ,  F16F1/04 ,  F16F1/06

Abstract: A composite coil spring includes a coil body that extends along a coiled axis. The coil body includes a polymer matrix and, disposed in the polymer matrix, a carbon fiber core and a plurality of fiber layers wrapped around the carbon fiber core in alternating oblique fiber angles to the coiled axis. The fiber layers include, from inside-out starting from the carbon fiber core, at least two consecutive carbon fiber intermediate fiber layers of alternating oblique fiber angles to the coiled axis, immediately followed by at least two consecutive glass fiber intermediate fiber layers of alternating oblique fiber angles to the coiled axis, and immediately followed by a carbon fiber outermost fiber layer.