PROBLEM TO BE SOLVED: To reduce the abrasion and breakage of teeth flanks when the teeth of a gear that transmits the power generated by a power generating part are formed of resin in a vehicle steering device.SOLUTION: A first worm wheel (223) has a tooth part (223a) obtained by molding a polyamide resin composition predominantly composed of polyamide resin, the polyamide resin having a viscosity number of 190 ml/g or more.SELECTED DRAWING: Figure 3
【課題】車両の操舵装置において、動力発生部が発生させた動力を伝達するギヤの歯を樹脂によって形成する場合に、歯面の摩耗及び破損を低減する。【解決手段】第1のウォームホイール(223)は、ポリアミド樹脂を主成分とするポリアミド樹脂組成物を成形してなる歯部(223a)を備え、ポリアミド樹脂の粘度数が、190ml/g以上である。【選択図】図3
GEAR FOR STEERING DEVICE, AND STEERING DEVICE
操舵装置用ギヤ、及び操舵装置
2017-07-27
Patent
Electronic Resource
Japanese
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