PROBLEM TO BE SOLVED: To provide a driving device capable of preventing entry of impure water including water and foreign objects.SOLUTION: A stator 22 and a rotor 23 included in a driving device 2 are housed in a housing 21. A protrusion 24 protrudes to the outer air side from an outer wall surface 271 which is positioned at one axial side of the rotor 23 in the housing 21. A small diameter pulley 11 is provided at an end part of a shaft 10 which passes through a hole 241 provided at the protrusion 24 to protrude toward the outer air side. An oil seal 25 seals a space between an inner peripheral wall of a hole 241 of the protrusion 24 and an outer wall of the shaft 10. The structure allows impure water from moving along an outer periphery of the protrusion 24 when the impure water adhering to the outer wall surface 271 of the housing 21 moves along the outer wall surface 271 and drops downward in a gravity direction. Thus, the structure inhibits the impurity water from adhering to the oil seal 25.SELECTED DRAWING: Figure 2
【課題】 水および異物を含む不純水の浸入を防ぐことの可能な駆動装置を提供する。【解決手段】 駆動装置2が備えるステータ22およびロータ23は、ハウジング21に収容される。突部24は、ハウジング21のうちロータ23の軸方向の一方に位置する外壁面271から外気側へ突出する。小径プーリ11は、突部24に設けられた孔241を通り外気側へ突出したシャフト10の端部に設けられる。オイルシール25は、突部24の孔241の内周壁とシャフト10の外壁との間をシールする。これにより、ハウジング21の外壁面271に付着した不純水がその外壁面271を伝って重力方向下側へ落ちる場合、その不純水は突部24の外周を伝うので、オイルシール25への不純水の付着が抑制される。【選択図】図2
DRIVING DEVICE AND ELECTRIC POWER STEERING DEVICE
駆動装置、及び、電動パワーステアリング装置
09.03.2017
Patent
Elektronische Ressource
Japanisch
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