发明名称 PRESSED PULLEY
摘要 A pressed pulley is provided of which the inner diameter of an inner tubular portion can be increased without changing the outer diameter of an outer tubular portion. The pulley includes an annular connecting portion (13) connected to an end of the outer tubular portion (11) around which a belt is wound and an end of the inner tubular portion (12). The connecting portion is an annular bent portion having a circular arc-shaped section and formed with an inner circular arc-shaped surface (15) having a constant radius of curvature and connected to the radially inner surface of the outer tubular portion (11) and the radially outer surface of the inner tubular portion (12) through respective tangential lines.
申请公布号 US2016017978(A1) 申请公布日期 2016.01.21
申请号 US201414773774 申请日期 2014.03.12
申请人 NTN CORPORATION 发明人 KODA Tsuyoshi;IZUTSU Tomoyoshi
分类号 F16H55/44 主分类号 F16H55/44
代理机构 代理人
主权项 1. A pressed pulley formed by pressing and comprising an outer tubular portion configured such that a belt can be wound around the outer tubular portion, an inner tubular portion provided inside of the outer tubular portion and configured such that a bearing can be fitted in the inner tubular portion, and a connecting portion connected to an end of the outer tubular portion and an end of the inner tubular portion, wherein the connecting portion is an annular bent portion having a circular arc-shaped section and formed, on an inner periphery thereof, with an inner circular arc-shaped surface having a constant radius of curvature and connected to a radially inner surface of the outer tubular portion such that the radially inner surface extends in a first tangential direction of the inner circular arc-shaped surface, and connected to a radially outer surface of the inner tubular portion such that the radially outer surface extends in a second tangential direction of the inner circular arc-shaped surface.
地址 Osaka JP