DRIVE DEVICE FOR VEHICLE

A speed reduction device (3) that has a first planetary gear mechanism (31), a second planetary gear mechanism (32), and a differential gear device are disposed coaxially with a rotary electric machine. The first planetary gear mechanism (31) is disposed on the rotary electric machine side relative...

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Bibliographische Detailangaben
Hauptverfasser:	SANJI Hiroaki, ICHIOKA Mitsuhiro, SUYAMA Daiki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A speed reduction device (3) that has a first planetary gear mechanism (31), a second planetary gear mechanism (32), and a differential gear device are disposed coaxially with a rotary electric machine. The first planetary gear mechanism (31) is disposed on the rotary electric machine side relative to the second planetary gear mechanism (32) in an order of a power transmission path, and the first planetary gear mechanism (31) is disposed on the rotary electric machine side relative to the second planetary gear mechanism (32) along the axial direction (L). A helix angle (θ1) of a helical tooth of the first planetary gear mechanism (31) and a helix angle (θ2) of a helical tooth of the second planetary gear mechanism (32) are formed so that thrust forces (SF1, SF2) are in mutually opposite directions in the axial direction (L). A speed reduction ratio of the first planetary gear mechanism (31) is equal to or more than a speed reduction ratio of the second planetary gear mechanism (32).