Title:
GEAR DEVICE
Document Type and Number:
Japanese Patent JP2020148225
Kind Code:
A
Abstract:
To provide a gear device which can alleviate bending stress applied on a knock pin.SOLUTION: A gear device 100 includes an external gear 14, an internal gear 16, a first carrier 18 arranged on one side in an axial direction of the external gear 14, a second carrier 20 arranged on the other side in the axial direction of the external gear 14 and connected with the first carrier 18, and a knock pin 36 for positioning the connection position of the first carrier 18 and the second carrier 20. The first carrier 18 has a first knock pin hole 18a in which the knock pin 36 is inserted. The second carrier 20 has a second knock pin hole 20a in which the knock pin 36 is inserted. The first knock pin hole 18a has a first chamfer part at an opening part peripheral edge 18e. The second knock pin hole 20a has a second chamfer part at an opening part peripheral edge 20e. When an axial direction dimension of the first chamfer part is defined as H1, and an axial direction dimension of the second chamfer part is defined as H2, the sum of H1 and H2 is equal to or less than 0.9 mm.SELECTED DRAWING: Figure 1
Inventors:
ODA MASAKI
KUROSU YUICHI
KUROSU YUICHI
Application Number:
JP2019044057A
Publication Date:
September 17, 2020
Filing Date:
March 11, 2019
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES
International Classes:
F16H1/32
Domestic Patent References:
| JP2015021555A | 2015-02-02 | |||
| JPH03281120A | 1991-12-11 |
Attorney, Agent or Firm:
Sakaki Morishita
Tomisho Teruo
Tomisho Teruo