Title:
TRANSMISSION WITH ELECTRIC MOTOR AND BOGIE DRIVE UNIT
Document Type and Number:
Japanese Patent JP2019210943
Kind Code:
A
Abstract:
To provide a structure which is reducible in a size, reducible in a cost by suppressing the number of part items, and excellent in a silence characteristic.SOLUTION: A transmission 3 for transmitting a rotation motion of an electric motor 2 has a casing 36, a sun roller 32, a plurality of planetary rollers 33, a carrier 34 and a ring 38. The casing forms at least a part of an external peripheral part of the transmission. The sun roller is fixed to a periphery of an input part 31 which rotates by the power of the electric motor. The plurality of planetary rollers are arranged around the sun roller, and rotate. The carrier rotatably supports the plurality of planetary rollers via a first bearing. The ring is annularly expanded at the outside of the planetary rollers in a radial direction with a center shaft 20 as a center. The plurality of planetary rollers contact with the ring. The carrier is fixed to a stationary part 5 of the electric motor. The ring and the casing rotate accompanied by the rotation of the plurality of planetary roller with the center shaft as a center.SELECTED DRAWING: Figure 1
Inventors:
OKAMURA KIKUO
INOUE HITOSHI
INOUE HITOSHI
Application Number:
JP2018104416A
Publication Date:
December 12, 2019
Filing Date:
May 31, 2018
Export Citation:
Assignee:
NIDEC SHIMPO CORP
International Classes:
F16H13/04; F16H57/04; H02K7/116
Domestic Patent References:
| JPH0415346A | 1992-01-20 | |||
| JP2016070285A | 2016-05-09 | |||
| JP2016200244A | 2016-12-01 |
Foreign References:
| GB1175299A | 1969-12-23 |
Attorney, Agent or Firm:
Takami Nishida