AUTO TENSIONER,申请号JP20050200185-传众专利搜索

AUTO TENSIONER

申请公布号：JP2007016943(A)

申请号：JP20050200185

申请日期：2005.07.08

申请公布日期：2007.01.25

申请人：

NTN CORP

发明人：GOTO SHIRO;HAYAKAWA HISASHI;TANAKA TADAHISA;MINENO KATSUNORI;INOUE MASAHARU

分类号：F16H7/08

主分类号：F16H7/08

摘要：PROBLEM TO BE SOLVED: To easily control resistance of a throttle of an auto tensioner, and to prevent clogging of the throttle by foreign matters. SOLUTION: In this auto tensioner 4 wherein a piston 12 formed at a lower portion of a rod 11 is slidably inserted into a sleeve 9 fixed in a cylinder 10, hydraulic oil is charged in a pressure chamber 14 in the sleeve 9, and stored in a reservoir chamber 15 formed between the cylinder 10 and the sleeve 9, a first passage 18 is formed to communicate the pressure chamber 14 and the reservoir chamber 15, a first check valve 19 is mounted in the first passage 18 to permit only the flow from a reservoir chamber 15 side to a pressure chamber 14 side, a second passage 20 is formed to communicate the pressure chamber 14 and the reservoir chamber 15, a second check valve 21 is mounted in the second passage 20 to permit only the flow from the pressure chamber 14 side to the reservoir chamber 15 side, the throttle is mounted in the second passage 20, and a return spring 17 is mounted to energize the rod 11 and the cylinder 10, an inner periphery of the second passage 20 has the polygonal shape, a column member 24 is press fitted to the second passage 20, and the throttle is composed of a plurality of passages 25 formed between an outer periphery of the column member 24 and an inner face of the second passage 20. COPYRIGHT: (C)2007,JPO&INPIT