Crankshaft oil seal assembly, crankcase and vehicle

A crankcase and oil seal technology, applied in the field of vehicles, can solve the problems of seal failure, affecting the efficiency of oil seal press-fitting, factory production rhythm, and increasing manufacturing costs, and achieve the effect of avoiding deformation.
CN112343729AInactive Publication Date: 2021-02-09ZHEJIANG GEELY HLDG GRP CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG GEELY HLDG GRP CO LTD
Publication Date
2021-02-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a crankshaft oil seal assembly, a crankcase and a vehicle. The crankshaft oil seal assembly comprises an oil seal base and an oil seal assembled on the oil seal base; the oil seal comprises a framework and an annular sealing body arranged on the outer side of an annular framework body in a sleeved mode; the framework is composed of the annular framework body and an annular boss extending towards the radial outer side of the annular framework body along the annular framework body, and the annular boss is provided with a first side end face and a second side end face whichare opposite; and the first side end face and the assembling face of the oil seal base are assembled together, and the second side end face is closer to an engine than the first side end face, so that the oil seal is prevented from being disengaged from the oil seal base through limiting of the annular boss. According to the scheme of the invention, when the pressure of the crankcase is abnormally too large in the leakage test or operation process of the engine, acting force can be applied to the oil seal, so that the oil seal moves towards the side, making contact with air, of the oil seal base, and the oil seal is prevented from being disengaged from the oil seal base due to the limiting effect of the annular boss.
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Description

technical field

[0001] The invention relates to the technical field of vehicles, in particular to a crankshaft oil seal assembly, a crankcase and a vehicle. Background technique

[0002] At present, the front end and rear end of the crankshaft are sealed with rubber oil seals during engine operation to prevent oil from seeping out during operation. The crankshaft oil seal used by the engine is currently generally used in the way that the rubber body is sleeved outside the metal frame, and the overall structure of the crankshaft oil seal is ring-shaped. The oil seal is pressed into the assembly cavity of the oil seal seat by a press-fitting machine, and is pressed from the side of the assembly cavity exposed to the air to the side close to the crankcase. During the press-fitting process, the press-fitting surface is the side end surface of the rubber body, and the oil seal is fixed in the fitting cavity through the interference between the rubber body and the assembly cavity...

Claims

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