Title:
DRIVE TRANSMISSION DEVICE FOR VEHICLE
Document Type and Number:
Japanese Patent JP2023144735
Kind Code:
A
Abstract:
To constitute a drive transmission device for vehicle more compactly while securing a speed reduction ratio at which a rotary electric machine is properly reduced in rotating speed.SOLUTION: A pair of speed reducers 5 arranged between a differential gear mechanism 3 and an output member 9 each comprises a sun gear S5 coupled to rotate integrally with a differential output element, a stepped planetary gear P6 comprising a large-diameter gear part P5a and a small-diameter gear part P5b meshing with the sun gear S5, a carrier C5, and at least a small-diameter ring gear R5b between a large-diameter ring gear and the small-diameter ring gear R5b. A speed reducer 5 is so constituted to have a small-diameter ring gear R5b fixed to a non-rotational member 6 and also the carrier C5 coupled to rotate integrally with the output member 9, or have a large-diameter ring gear fixed to the non-rotational member 6 and also the small-diameter ring gear R5b coupled to rotate integrally with the output member 9.SELECTED DRAWING: Figure 2
Inventors:
ISONO HIROSHI
Application Number:
JP2022051860A
Publication Date:
October 11, 2023
Filing Date:
March 28, 2022
Export Citation:
Assignee:
AISHIN KK
International Classes:
F16H48/10; F16H48/40; H02K7/116
Attorney, Agent or Firm:
Patent Attorney Corporation R&C