US 12,259,033 B2
Method for manufacturing actuator, and actuator
Yuta Koda, Tokyo (JP); Keiji Togawa, Tokyo (JP); and Hiroshi Osawa, Tokyo (JP)
Assigned to Sony Interactive Entertainment Inc., Tokyo (JP)
Appl. No. 17/798,610
Filed by Sony Interactive Entertainment Inc., Tokyo (JP)
PCT Filed Mar. 8, 2021, PCT No. PCT/JP2021/009058
§ 371(c)(1), (2) Date Aug. 10, 2022,
PCT Pub. No. WO2021/182414, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-040365 (JP), filed on Mar. 9, 2020.
Prior Publication US 2023/0091582 A1, Mar. 23, 2023
Int. Cl. F16H 55/18 (2006.01); F16H 1/06 (2006.01)
CPC F16H 55/18 (2013.01) [F16H 1/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for manufacturing an actuator including a speed reduction mechanism having a first gear, a scissors gear, and a second gear, gear teeth of the first gear and gear teeth of the scissors gear being engaged with gear teeth of the second gear, the method comprising:
attaching an elastic member for urging the scissors gear in a rotational direction to the scissors gear and the first gear when combining the scissors gear and the first gear in an axial direction;
fixing an angular position of the first gear and an angular position of the scissors gear by a fixing member in a state where angular positions of the gear teeth of the first gear and angular positions of the gear teeth of the scissors gear are made to coincide with each other against force of the elastic member;
incorporating into a gear case, the first gear and the scissors gear whose angular positions are fixed by the fixing member and the second gear, to engage the gear teeth of the second gear with the gear teeth of the first gear and the gear teeth of the scissors gear; and
releasing the fixing of the angular position of the first gear and the angular position of the scissors gear performed by the fixing member, by using an opening formed on the gear case
wherein the fixing includes inserting the fixing member into the first gear and the scissors gear in the axial direction to fix the angular positions of these gears.