The invention discloses an electric outboard engine and a motor waterproof structure thereof.The electric outboard engine comprises a motor which is arranged underwater when used, the motor comprises an end cover, a bearing is arranged in the end cover, an oil seal groove is formed in the position, located on the outer side of the bearing, in the end cover, and the motor waterproof structure comprises a waterproof groove which is formed in the inner end wall of the oil seal groove and concaves inwards; an isolating wall for isolating the waterproof groove from the driving shaft is arranged between the waterproof groove and the driving shaft of the motor; the flexible waterproof ring is embedded in the waterproof groove and can deform under the extrusion of external force; the pressing ring is arranged on the driving shaft in a sleeving mode and located on the inner side in the oil seal groove, the pressing ring is squeezed inwards and pressed into the flexible waterproof ring, and the pressing ring is not in contact with the oil seal groove, the waterproof groove and the wall face of the isolation wall. And the influence on the motor efficiency is reduced while the waterproof performance is ensured. The waterproof grade can still reach IP67, and the motor efficiency is improved by about two percentage points compared with an existing waterproof structure with two oil seals.

    本发明公开了一种电动舷外机及其的电机防水结构,电动舷外机包括使用时置于水下的电机,电机包括端盖,端盖内设有轴承且端盖内位于轴承的外侧设有油封槽,电机防水结构包括防水凹槽,其开设于油封槽的内端壁上且向内凹陷,防水凹槽与电机的驱动轴之间具有隔离防水凹槽与驱动轴的隔离壁;柔性防水圈嵌设于防水凹槽内且在外力挤压下可发生形变;压圈套设于驱动轴上且处于油封槽内的内侧,压圈向内挤压并压入柔性防水圈内且压圈与油封槽、防水凹槽及隔离壁的壁面之间均不接触。在保证防水性能的同时降低了对电机效率的影响。防水等级仍然可以达到IP67,而且电机效率相比现有的两个油封的防水结构提升了两个百分点左右。


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    Title :

    Electric outboard engine and motor waterproof structure thereof


    Additional title:

    一种电动舷外机及其的电机防水结构


    Contributors:
    HU WEIJI (author)

    Publication date :

    2023-06-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING





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