Title:
CYCLOID REDUCTION GEAR AND MOTOR UNIT
Document Type and Number:
Japanese Patent JP2020153412
Kind Code:
A
Abstract:
To prevent falling-off of pins constituting internal teeth while preventing increase of the number of components and complication of a shape.SOLUTION: A cycloid reduction gear 1 includes: an external gear 4 mounted eccentrically rotatably about a rotation center C of an input shaft 2 and having a plurality of carrier pin holes 4h axially penetrated; an internal gear 5 having a plurality of first pins 50 internally meshed with each of external teeth of the external gear 4, and a holder 51 rotatably holding each of the first pins 50; a carrier 6 having second pins 60 internally rotated in each of the carrier pin holes 4h and taking out only a rotation component of the external gear 4, and supporting portions 61 supporting at least one end portions of the second pins 60, and connecting all of the second pins 60; and first rolling bearings 8 rotatably supporting the supporting portions 61 to cases 7 fixed to the holder 51. The first rolling bearing 8 is disposed in a manner that its outer ring 8a overlaps a part of the first pins 50 when observed from a radial direction.SELECTED DRAWING: Figure 1
Inventors:
SUWA MASAKAZU
Application Number:
JP2019051156A
Publication Date:
September 24, 2020
Filing Date:
March 19, 2019
Export Citation:
Assignee:
MABUCHI MOTOR CO
International Classes:
F16H1/32; H02K7/116
Attorney, Agent or Firm:
Yu Sanada