PROBLEM TO BE SOLVED: To provide a universal joint which can suppress the wear of female serration teeth for a long period of time, and a steering device having the universal joint.SOLUTION: A pair of tooth-lacking parts 56, 56 are arranged at an internal peripheral face of a connecting part 30 with a slit 42 as a center. When it is assumed that a female serration is formed at an entire periphery of the internal peripheral face, a circumferential range of each tooth-lacking part 56 is set as a range from a portion corresponding to the slit 42 up to female serration teeth 52a having tooth faces at which one tooth face forms an inclination angle which is the right angle with respect to a center axial line D of a bolt penetration hole 44, or most approximate to the right angle, and a circumferential range of each tooth-lacking part 56 is set as a position corresponding to the center axial line D of the bolt penetration hole 44 from an axial member insertion-side end part of the connecting part 30.
【課題】長期に亘って雌セレーション歯の磨耗を抑制することができる自在継手、および該自在継手を備えたステアリング装置を提供すること。【解決手段】連結部30の内周面には、スリット42を中心にして一対の欠け歯部56、56が設けられ、各欠歯部56の周方向範囲は、内周面の全周に雌セレーションを形成したと仮定した場合に、スリット42に対応する部分から、一方の歯面がボルト挿通孔44の中心軸線Dに対して直角または最も直角に近い傾斜角度となる歯面を有する雌セレーション歯52aまでの範囲とし、各欠歯部56の周方向範囲は、連結部30の軸部材挿入側端部からボルト挿通孔44の中心軸線Dに対応する位置までとする。【選択図】図5
UNIVERSAL JOINT AND STEERING DEVICE HAVING THE UNIVERSAL JOINT
自在継手および該自在継手を備えたステアリング装置
2015-10-08
Patent
Electronic Resource
Japanese
UNIVERSAL JOINT AND STEERING DEVICE HAVING THE UNIVERSAL JOINT
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