To provide a universal joint having high holding force for a shaft member to be fitted, and capable of suppressing excessive stress generated at serration teeth due to stress concentration, and also provide a steering device including the universal joint.SOLUTION: A yoke 20 comprises a cylindrical connection part 30 forming a fitting hole 36 whose inner peripheral surface is fitted to a shaft member. The connection part 30 has a pair of thickness parts forming a slit 42. The pair of thickness parts comprises a first thickness part 40, and a second thickness part 41 thicker than the first thickness part 40. The slit 42 is configured such that a slit base end 42a close to an opening of the fitting hole 36 is deviated from a central axis of the fitting hole 36 and positioned close to a side surface of the first thickness part 40; and a virtual plane passing through a center of the slit 42 intersects with the central axis of the fitting hole 36, wherein the virtual plane extends obliquely from the slit base end 42a toward the central axis of the fitting hole 36.SELECTED DRAWING: Figure 5
【課題】嵌合される軸部材に対する保持力が高く、且つ応力集中によるセレーション歯に発生する過大な応力を抑制することができる自在継手、及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】ヨーク20は、内周面が軸部材と嵌合する嵌合孔36を形成する筒状の連結部30を備える。連結部30は、スリット42を形成する一対の肉厚部を有する。一対の肉厚部は、第1肉厚部40と、第1肉厚部40よりも肉厚である第2肉厚部41からなる。スリット42は、嵌合孔36の開口寄りのスリット基端42aが、嵌合孔36の中心軸心からずれて第1肉厚部40の側面寄りに位置し、スリット基端42aから嵌合孔36の中心軸心方向に向かって斜めに延在し、スリット42の中央を通る仮想平面が、嵌合孔36の中心軸心と交差するように構成されている。【選択図】図5
UNIVERSAL JOINT AND STEERING DEVICE INCLUDING THE SAME
自在継手及び該自在継手を備えたステアリング装置
2019-02-21
Patent
Electronic Resource
Japanese
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