PROBLEM TO BE SOLVED: To provide a universal joint having sufficient shaft holding force of a yoke, preventing abnormal wear and fracture of teeth of a female serration, and superior in durability, and a steering device having the universal joint.SOLUTION: In a universal joint, a yoke 20 is provided with a cylindrical connection portion 30 which has a female serration 38 engaged with a male serration 54 formed on an outer peripheral face of an output shaft 7, on an inner peripheral face and to which the output shaft 7 is inserted, and the connection portion 30 has a pair of thick portions 40, 40 forming a slit 42, and is connected to the output shaft 7 by deforming the pair of thick portions 40, 40 in directions to be close to each other by a fastening bolt 45. The female serration 38 has a first circumferential range on which a plurality of teeth 39 are formed at equal pitches, and a second circumferential range on which a plurality of teeth 39 are formed at pitches larger than the pitches of the teeth 39 of the first circumferential range at a slit 42 side with respect to the first circumferential range.SELECTED DRAWING: Figure 4
【課題】ヨークが充分な軸保持力を備え、雌セレーションの歯の異常な磨耗および破損を防止し、耐久性能に優れた自在継手、および該自在継手を有するステアリング装置を提供すること。【解決手段】ヨーク20は、出力軸7の外周面に形成された雄セレーション54と噛み合う雌セレーション38が内周面に形成され、出力軸7が挿入される筒状の連結部30を備え、連結部30は、スリット42を形成する一対の肉厚部40、40を有し、締結ボルト45によって一対の肉厚部40、40を互いに近づく方向に変形させることにより出力軸7と連結される自在継手において、雌セレーション38は、複数の歯39が等ピッチで形成された第1の周方向範囲と、第1の周方向範囲よりもスリット42側で、第1の周方向範囲の歯39のピッチよりも大きいピッチで複数の歯39が形成された第2の周方向範囲とを有している。【選択図】図4
UNIVERSAL JOINT AND STEERING DEVICE INCLUDING 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
2017-01-05
Patent
Elektronische Ressource
Japanisch
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