US 12,269,577 B2
Propeller attaching device and propeller attaching method
Tatsuo Makii, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/999,053
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Jun. 17, 2021, PCT No. PCT/JP2021/023001
§ 371(c)(1), (2) Date Nov. 17, 2022,
PCT Pub. No. WO2021/261369, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 2020-109398 (JP), filed on Jun. 25, 2020.
Prior Publication US 2023/0192272 A1, Jun. 22, 2023
Int. Cl. B64C 11/08 (2006.01)
CPC B64C 11/08 (2013.01) 16 Claims
OG exemplary drawing
 
1. A propeller attaching device comprising:
a coupler that includes a base and a first receiving portion, the base having a through-hole into which a protruding portion of an output shaft of a motor is inserted, the protruding portion including one end of the output shaft, the base being coupled to the output shaft, the first receiving portion allowing attachment/detachment of an attachment portion of a propeller by rotation of the propeller in a circumferential direction of the output shaft relative to the base, the propeller having the attachment portion and being provided with an opening into which the protruding portion protruding from the through-hole is inserted, the first receiving portion receiving the attachment portion in an axial direction of the output shaft to restrict movement of the propeller in the axial direction, the coupler rotating integrally with the output shaft;
a movable body that includes a second receiving portion, is supported by the coupler to be movable in the axial direction between an attachment/detachment position and a restriction position, and rotates integrally with the coupler, the attachment/detachment position allowing attachment/detachment of the attachment portion to/from the first receiving portion, the restriction position being located in a first direction relative to the attachment/detachment position, the first direction extending from the other end portion of the output shaft toward the one end portion in the axial direction of the output shaft, the restriction position receiving the attachment portion attached to the first receiving portion in the circumferential direction by the second receiving portion to restrict the rotation of the propeller in the circumferential direction relative to the base; and
a resilient body that presses the movable body in the first direction and rotates integrally with the coupler,
wherein the movable body has an inclined surface that is circumferentially inclined in the first direction while extending on one side in the circumferential direction, is moved from the restriction position to the attachment/detachment position against resilient force of the resilient body, in response to pressing of the inclined surface by the propeller rotating to one side in the circumferential direction, upon attaching the attachment portion to the first receiving portion, and is moved from the attachment/detachment position to the restriction position by the resilient force of the resilient body when the inclined surface is released from the pressing by the propeller.