Title:
PLANETARY GEAR DEVICE
Document Type and Number:
Japanese Patent JP2023117778
Kind Code:
A
Abstract:
To provide a planetary gear device that can smoothly rotate planetary gears with respect to a planetary carrier while reducing machining cost.SOLUTION: A planetary gear device 1 comprises: a plurality of planetary gears 2 each having a first gear part 21 and a second gear part 22;, a planetary carrier 3 having a plurality of housing holes 30 holding the planetary gears 2; a sun gear 4 having external teeth 41 engaged with the first gear part 21; and an internal gear 5 having internal teeth engaged with the second gear part 22. The housing holes 30 each have a first hole part 301 housing the first gear part 21, and a second hole part 302 housing the second gear part 22. In the second gear part 22, a part in an axial direction is an engaged part 221 engaged with the internal gear 5, and a non-engaged part 222 is provided between the engaged part 221 and the first gear part 21. An inner surface 302a of the second hole part 302 has a supporting surface 302b supporting the second gear part 22, and an opposed surface 302c opposed to the non-engaged part 222 via a gap.SELECTED DRAWING: Figure 1
Inventors:
ASAMI KENJI
YOSHIHAMA TOMOO
YAMASHITA TAKUHIRO
TSUDA TAKUYA
NAKAMURA YASUFUMI
TAKAYANAGI NAOTO
YOSHIHAMA TOMOO
YAMASHITA TAKUHIRO
TSUDA TAKUYA
NAKAMURA YASUFUMI
TAKAYANAGI NAOTO
Application Number:
JP2022020524A
Publication Date:
August 24, 2023
Filing Date:
February 14, 2022
Export Citation:
Assignee:
JTEKT CORP
International Classes:
F16H48/285
Attorney, Agent or Firm:
Hirata International Patent Office
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