公开(公告)号：JPH04349256A

公开(公告)日：1992-12-03

申请号：JP12099491

申请日：1991-05-27

Applicant: SONY CORP

Inventor： NAMEKAWA YOSHIHIDE ,  TAKASE KENJI ,  IKEDA HIROYUKI ,  KUWABARA TOMOJI

IPC: G11B15/60

Abstract: PURPOSE:To improve the adhesion of a metallic pipe and a synthetic resin and to decrease the fluctuations in accuracy as well as to stabilize quality by forming plural grooves on the inner peripheral surface of a metallic pipe and providing a supporting part by molding of a synthetic resin on this inner peripheral surface. CONSTITUTION:The plural grooves 1a are formed on the metallic pipe 1 and the supporting part 2 is provided by molding of the synthetic resin. A shaft 3 is inserted into the supporting part 2. The shaft 3 is supported at both ends by bearings and a revolving guide roller is supported rotatably by these bearings. The adhesion of the metallic pipe and the synthetic resin is improved by the grooves 1 of the metallic pipe constituted in such a manner, by which the fluctuations in the rotating and dimensional accuracy are eliminated and the stable quality is assured.