Rolling-bearing motor vehicle drive device

CN119365708APending Publication Date: 2025-01-24BAYERISCHE MOTOREN WERKE AG
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Patent Information

Application Number
CN202380046299.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-08-17
Filing Date
2023-07-18
Publication Date
2025-01-24

AI Technical Summary

Technical Problem

When the existing motor vehicle drive system transmits driving power, it is difficult to achieve a balance between long service life and high efficiency, especially the support structure of the transmission shaft has a contradiction between efficiency and loss.

Method used

The rolling supporting vehicle driver system is adopted by the traction transmission drive shaft, the middle shaft and the use of a fixed-floating support structure from the dynamic shaft, combined with the deep groove ball bearings and roller bearings, to achieve the efficient support of the transmission shaft.

Benefits of technology

The efficient transmission of driving power is achieved, the loss of the support site is reduced, and the overall efficiency and service life of the motor vehicle driver system is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a motor vehicle drive system (24) having an electromechanical energy converter as a drive motor (15) and having a traction transmission device for transmitting drive power to a motor vehicle axle drive, said traction transmission device having a traction transmission housing arrangement, a traction transmission drive shaft (1) is rotatably mounted in the traction transmission housing device, and the traction transmission drive shaft is connected to a drive motor (15) in a rotationally fixed manner or is selectively connected to the drive motor in a rotationally fixed manner; and a traction transmission intermediate shaft (4) which is rotatably mounted in the traction transmission housing arrangement and which is arranged axially parallel to the traction transmission drive shaft (1) and radially spaced apart from the traction transmission drive shaft (1); and a traction transmission output shaft (2) which is rotatably mounted in the traction transmission housing arrangement and which is arranged axially parallel to and radially spaced apart from the other two traction transmission shafts (1, 4); a traction transmission drive gear (19) is arranged on the traction transmission drive shaft (1), which traction transmission drive gear meshes with a first traction transmission intermediate gear (6) arranged on the traction transmission intermediate shaft (4), and a second traction transmission intermediate gear (20) is arranged on the traction transmission intermediate shaft (4), the second traction transmission intermediate gear meshes with a traction transmission driven gear (3) arranged on a traction transmission driven shaft (2), and the traction transmission housing arrangement has a traction transmission housing (13) and a traction transmission cover (14). The three traction transmission shafts (1, 2, 4) are each supported in the traction transmission housing arrangement by means of a fixed-floating bearing structure, and the bearing structures each have a fixed bearing for receiving an axial force and each have at least one floating bearing designed only for receiving a radial force, the three fixed bearings are arranged in the traction transmission cover (14), and at least three of the floating bearings are arranged in the traction transmission housing.
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Citation Information

Patent Citations

  • Arrangement of a gearbox and an electric machine

    DE102019127242A1