To provide an electrolytic corrosion preventing structure capable of reliably preventing electrolytic corrosion without concern about durability reliability and wear resistance with a simple configuration.SOLUTION: When a motor generator 12 is in a high rotation state or a high load state, that is, a shaft current (shaft voltage) generated in a rotor shaft 18 of the motor generator 12 increases so that a risk of electrolytic corrosion of a bearing 20 increases, hydraulic pressure is applied to one axial end of the rotor shaft 18, thereby, a thrust force is applied to the rotor shaft 18 so that rolling elements of the bearing 20 and a bearing ring are actively contacted and conduction between the two is strengthened and the electrolytic corrosion of the bearing 20 is reliably prevented.SELECTED DRAWING: Figure 2
【課題】耐久信頼性・耐摩耗性に懸念がなく、簡易な構成で、確実に電食を防止することが可能な電食防止構造を提供する。【解決手段】モータジェネレータ12が高回転状態又は高負荷状態であるとき、即ちモータジェネレータ12のロータシャフト18に生じる軸電流(軸電圧)が大きくなって軸受20の電食発生のおそれが大きくなるときに、ロータシャフト18の軸方向一方の端部に油圧が付与され、これによりロータシャフト18にスラスト力が付与されて軸受20の転動体と軌道輪が積極的に接触され、両者間の導通が強化されて軸受20の電食が確実に防止される。【選択図】図2
ELECTROLYTIC CORROSION PREVENTION STRUCTURE
電食防止構造
2020-01-23
Patent
Electronic Resource
Japanese
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F16C SHAFTS , Wellen |
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