Title:
GEARING DEVICE AND ROBOT
Document Type and Number:
WIPO Patent Application WO/2024/047743
Kind Code:
A1
Abstract:
A gearing device 10 according to the present disclosure is mounted to a mounting member, and is provided with: an internal gearing 20; an external gearing 30 that partly meshes with the internal gearing 20; a wave motion generator 40 that is in contact with the inner circumferential surface of the external gearing 30 and that rotates, about a rotation axis 10A, the meshing position of the internal gearing 20 and the external gearing 30; a bearing 50 that is provided with an inner ring 51 and an outer ring 52 and that supports the internal gearing 20 and the external gearing 30 so as to be relatively rotatable; and an oil seal 60. A first space 54 open to one end surface of the bearing 50 is formed between the inner ring 51 and the outer ring 52. A second space 55 open to the other end surface of the bearing 50 is formed between the inner ring 51 and the outer ring 52. A gearing-side space 70 that is in communication with the second space 55 is formed between the external gearing 30 and the bearing 50. The oil seal 60 seals the first space 54. The external gearing 30 is provided with: a cylindrical part 31 that is flexible and that is coaxially disposed inside the internal gearing 20; a diaphragm part 33 that expands outward from an end of the cylindrical part 31; and a rigid boss part 34 that is annular and that extends from the outer circumferential edge of the diaphragm part 33. The boss part 34 is mounted to the mounting member, and at least the boss part 34 has formed therein a communication hole 80 that is in communication with the first space 54 or the gearing-side space 70. The communication hole 80 is in communication with an inner space 31A of the cylindrical part 31 via a groove 2A provided in the mounting member.
Inventors:
MANOME TOSHIFUMI (JP)
Application Number:
PCT/JP2022/032576
Publication Date:
March 07, 2024
Filing Date:
August 30, 2022
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F16H1/32
Domestic Patent References:
| WO2018189798A1 | 2018-10-18 |
Foreign References:
| JP3233524U | 2021-08-12 |
Attorney, Agent or Firm:
AKATSUKI UNION PATENT FIRM (JP)
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