A gearbox intermediate shaft structure

A gearbox and intermediate shaft technology, applied in gear lubrication/cooling, belt/chain/gear, transmission parts, etc., can solve the problems of low NHV index, improve accuracy, shorten axial dimension, and improve loadability Effect

Active Publication Date: 2022-07-01
DONGFENG MOTOR CORP HUBEI
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  • Description
  • Claims
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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

Method used

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  • A gearbox intermediate shaft structure
  • A gearbox intermediate shaft structure
  • A gearbox intermediate shaft structure

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Embodiment

[0032] The present invention provides a gearbox intermediate shaft structure, such as Figure 1 to Figure 3 As shown, it includes a gearbox housing, a first bearing 3 , a first gear 4 , a second gear 5 , a second bearing 6 , a nut 7 , an oil guide 8 and a shaft body 9 . The shaft body 9 is provided with an axially penetrating cavity 91 for guiding the flow of lubricating oil. The first gear 4 and the second gear 5 are arranged on the outer side wall of the shaft body 9 , and the first gear 4 and the shaft body 9 are integrally formed. The outer side wall of the shaft body 9 is provided with external splines, the second gear 5 is provided with internal splines, and the second gear 5 slides along the splines 92 to be close to the first gear 4 .

[0033] like Figure 1 to Figure 3 As shown, a first bearing 3 on one side of the first gear 4 is connected between the shaft body 9 and the gearbox housing, and the first bearing 3 can make the first gear 4 rotate relative to the gear...

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Abstract

The invention discloses an intermediate shaft structure of a gearbox, which relates to the technical field of gearboxes of motor vehicles, and solves the technical problem of low NHV index of vehicles caused by unreasonable intermediate shaft structure design of gearboxes in the prior art. It includes a shaft body, connected with a first bearing and a second bearing, the shaft body is provided with an axially through cavity; an oil guide is connected between the shaft body and the gearbox casing, and the oil guide is provided with a first oil guide channel and the second oil guide channel. The first oil guide channel on the oil guide of the present invention can make the oil flow into the first bearing through the cavity on the shaft body, so as to satisfy the lubrication of the first bearing; and through the second oil guide channel, the oil can directly meet the second For bearing lubrication, the simple structure design of the oil guide not only satisfies the full lubrication of the first bearing and the second bearing, but also avoids the problem of designing complex oil guide pipes in the intermediate shaft or bearing, and improves the NHV of the gearbox. And it contributes to the production of the intermediate shaft and reduces the cost.

Description

technical field [0001] The present 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 petroleum resources and the improvement of people's awareness of environmental protection, governments and major auto manufacturers have gradually increased their investment and research in the field of new energy vehicles. In the field of hybrid and pure electric vehicles certain results have been achieved. [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 transmission. In the prior art, the intermediate shaft in the gearbox is usually designed in the form of an axial through hole, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/023F16H57/021F16H57/04
CPCF16H57/023F16H57/021F16H57/042
Inventor 齐士举唐琛郭振戈柯孟龙刘欢
Owner DONGFENG MOTOR CORP HUBEI
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