Hub drive and its cooling water jacket

Abstract

A wheel hub driver and its cooling water jacket, wherein the cooling water jacket includes an annular cooling channel, the cooling channel has a water inlet area and a water outlet area, and the water inlet area and the water outlet area are adjacent to each other in the circumferential direction to correspond to the inlet and outlet areas respectively. The water pipe and the water outlet pipe are separated by a partition between the water inlet area and the water outlet area; a flow guide is also provided in the cooling channel, which is located on the side of the water outlet area of ​​the partition and is connected to the water outlet area. There is a space between the partitions, the flow guide is located on one side of the axial direction of the central point of the water outlet area, and there is a gap between the side wall of the cooling channel in the axial direction, so that the water that enters the gap Cooling water is directed toward the partition. This solution diverts part of the cooling water flowing to the water outlet area towards the partition through the flow guide, which can improve the fluidity of the cooling water near the partition, avoid local high temperature in this area, and avoid thermal stress in the cooling water jacket.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a hub drive and a cooling water jacket thereof. Background technique [0002] Such as figure 1 , the hub driver includes a hub 1 , a motor 2 and a reducer 3 disposed in the hub 1 , and a motor accommodating portion for accommodating the motor 2 is formed in the hub 1 . In order to maintain the working temperature of the motor and prevent the motor from being overheated, a cooling water jacket 4 is provided on the outer peripheral surface of the motor 2 . combine figure 2 , the outer peripheral surface of the cooling water jacket 4 is formed with an annular groove 4a to enclose a cooling channel with the inner peripheral surface of the motor housing. A partition plate 4b is provided in the annular groove 4a, and the water inlet area 4c and the water outlet area 4d of the cooling channel are respectively arranged on both sides of the partition plate 4b. After cooling water enters the...

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the invention is that in the existing cooling water jacket, a dead water area is easily formed near the partition plate, and the pressure loss from the water inlet area to the water outlet area is relatively large

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