Power transmission mechanism
AssigneeNational Institute of Advanced Industrial Science and Technology
InventorHitoshi Maekawa
Life of this patent
Estimating the term…
Abstract
In a power transmission mechanism 20, a line connecting a center shaft 21 of a reference gear member 40 and a first shaft 44 of a first planetary gear member 42 and a line connecting the center shaft 21 of the reference gear member 40 and a second shaft 47 of a second planetary gear member 45 form a specific angle α. Rotation in one direction is prevented when a first carrier member 22 and a second carrier member 32 are relatively rotated in a direction to decrease the specific angle α. Further, a rotation prevention release unit is provided to release a prevention state of the rotation when the first carrier member 22 and the second carrier member 32 are relatively rotated in a direction to increase the specific angle α.
Claims12
A power transmission mechanism, comprising:
- a reference gear member arranged on a center shaft;
- a first carrier member arranged rotatably about the center shaft of the reference gear member;
- a second carrier member arranged rotatably about the center shaft of the reference gear member;
- a first planetary gear member rotatably arranged to the first carrier member via a first shaft and meshed with the reference gear member;
- and
- a second planetary gear member rotatably arranged to the second carrier member via a second shaft and meshed with the first planetary gear member;
- wherein the second carrier member is configured to be relatively rotatable with respect to the first carrier member in a predetermined range,
- the first carrier member and the second carrier member are arranged concentrically about the reference gear member,
- the reference gear member, the first planetary gear member, and the second planetary gear member are arranged such that a line connecting the center shaft of the reference gear member and the first shaft of the first planetary gear member and a line connecting the center shaft of the reference gear member and the second shaft of the second planetary gear member form a specific angle,
- rotation in one direction is prevented when the first carrier member and the second carrier member are relatively rotated in a direction to decrease the specific angle, and
- a rotation prevention release means is provided to release a prevention state of the rotation when the first carrier member and the second carrier member are relatively rotated in a direction to increase the specific angle.
Dependencies are inferred from the claim text.