An electric vehicle rear axle assembly

Abstract

The invention discloses an electric vehicle rear axle assembly in the field. The electric vehicle rear axle assembly comprises a variable speed differential mechanism, a drive motor and a variable speed differential mechanism shell and further comprises an oil conveying device installed matched with an oil feeding hole and conveying oil to an inner cavity of the variable speed differential mechanism shell through the oil feeding hole. The oil conveying device comprises an installation main box fixed to the outer wall of the variable speed differential mechanism shell and made of a transparentmaterial and further comprises an oil inflow pipe, a cam, a carrying block and an adjusting rotary shaft. An oil injection bolt in threaded fit with the oil inflow end of an oil injection channel is inserted in the oil inflow end of the oil injection channel when oil needs to be injected. An injection channel communicating with the oil injection channel in the oil injection process is formed in the oil injection bolt in a run-through mode. The oil outflow end of the oil injection channel directly faces and communicates with a carrying hole of the carrying block only when the oil needs to be injected. A sealing bolt in threaded fit with the oil inflow end of the oil injection channel is inserted in the oil inflow end of the oil injection channel when the oil does not need to be injected. Anoil inflow port of the oil feeding hole can be double sealed when the oil is not injected.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle rear axle assembly. Background technique [0002] A utility model patent with a patent number of 2011200507516 is disclosed in the prior art, and the application date is February 28, 2011. The patent name is an integrated drive rear axle for three-wheel and four-wheel electric vehicles, including the speed differential, and also includes The drive motor used to provide power to the variable speed differential also includes a variable speed differential housing with an oil supply hole, and also includes a pair of half shafts connected to the power output end of the variable speed differential, and also includes a connection with the oil supply hole An oil delivery device that is installed as a set and can deliver oil to the inner cavity of the transmission differential case through the oil supply hole. [0003] In the prior art, the oil delivery devi...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the oil delivery device is usually an oil supply hole that supplies oil to the transmission differential and is arranged on the transmission differential housing, and then an oil nozzle is installed on the oil supply hole for oil injection. However, the electric vehicle is running at high speed. During the process, there will be large-scale and high-load vibrations, which often lead to damage to the oil nozzle, and will also cause relative displacement between the oil nozzle and the oil supply hole, resulting in damage to the thread, making the oil injection effect worse, and the sealing performance is not stable enough. , since the oil supply hole is on the casing of the transmission differential, it is inconvenient to repair repeatedly

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