Intermediate shaft structure of gearbox

Abstract

The invention discloses an intermediate shaft structure of a gearbox, and relates to the technical field of gearboxes of motor vehicles. The structure solves the technical problem that an NHV index ofa vehicle is low due to unreasonable structural design of an intermediate shaft of a gearbox in the prior art. The structure comprises a shaft body, and an oil guide device, wherein the shaft body isconnected to a first bearing and a second bearing, and the shaft body is provided with an axially-through cavity; and the oil guide device is connected between the shaft body and a gearbox shell, andthe oil guide device is provided with a first oil guide channel and a second oil guide channel. According to the structure, the first oil guide channel in the oil guide device can enable oil to flowinto the first bearing through the cavity in the shaft body, so that lubrication of the first bearing is met, the oil liquid directly meets lubrication of the second bearing through the second oil guide channel, the simple oil guide device structure design meets sufficient lubrication of the first bearing and the second bearing, meanwhile, the problem that a complex oil guide pipeline is designedin an intermediate shaft or a bearing is solved, the NHV of the gearbox is improved, and the production and manufacturing of the intermediate shaft are facilitated, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of gearboxes for motor vehicles, in particular to a gearbox intermediate shaft structure. Background technique [0002] With the development of society, the increase of motor vehicles, the increasing scarcity of oil resources and the improvement of people's awareness of environmental protection, the governments of various countries and major automobile manufacturers have gradually increased their investment and research in the field of new energy vehicles. In the field of hybrid and pure electric vehicles Some results have been obtained. [0003] For hybrid transmissions used in new energy vehicles, noise, vibration, and harshness (NHV) have become important indicators of vehicle comfort. In order to reduce the NHV of the vehicle, it is usually necessary to lubricate the various bearings in the gearbox. In the prior art, the intermediate shaft in the gearbox is usually designed in the form of an axial thro...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide a gearbox intermediate shaft structure to solve the problem of low NHV index of the vehicle due to the unreasonable design of the intermediate shaft structure of the gearbox in the prior art. technical problem

Images