PROBLEM TO BE SOLVED: To provide a ball screw device capable of positively preventing its dropping into a nut when it is assembled into a deflector and capable of reducing the number of assembling steps and provide a steering device.SOLUTION: A ball screw device 40 comprises a screw shaft 20, a nut 21, a rotor 24, a return flow passage R2 and a deflector 51. A fixing hole 41 is provided with a pair of first side surfaces 411a, 411b, the deflector 51 is provided with a pair of second side surfaces 511a, 511b oppositely facing against the pair of first side surfaces under a state in which it is stored in the fixing hole. The first side surface of the fixing hole and the second side surface of the deflector have an engagement structure where they are engaged to each other under a non-normal state in which a part of the deflector is inserted into the fixing hole at an attitude different from that of the deflector kept under a state in which it is stored in the fixing hole.SELECTED DRAWING: Figure 9
【課題】デフレクタの組み付け時において、ナット内への脱落を確実に防止し、組み付け工数を低減することができるボールねじ装置、及びステアリング装置を提供する。【解決手段】ボールねじ装置40は、ねじ軸20と、ナット21と、転動体24と、還流路R2と、デフレクタ51と、を備える。取付孔41は、一対の第一側面411a,411bを備え、デフレクタ51は、取付孔に収容された状態において、一対の第一側面と対向する一対の第二側面511a,511bを備える。取付孔の第一側面及びデフレクタの第二側面は、取付孔に収容された状態のデフレクタの姿勢とは異なる姿勢でデフレクタの一部が取付孔に挿入された非正規状態において、相互に係止し合う係止構造を有する。【選択図】図9
BALL SCREW DEVICE AND STEERING DEVICE WITH BALL SCREW DEVICE
ボールねじ装置、及びボールねじ装置を備えたステアリング装置
2018-05-31
Patent
Electronic Resource
Japanese
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