US 12,246,864 B2
Drone having movable propeller shaft
In Heon Kim, Seoul (KR)
Appl. No. 18/693,384
Filed by In Heon Kim, Seoul (KR)
PCT Filed Jul. 18, 2022, PCT No. PCT/KR2022/010431
§ 371(c)(1), (2) Date Mar. 19, 2024,
PCT Pub. No. WO2023/106538, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 10-2021-0175811 (KR), filed on Dec. 9, 2021.
Prior Publication US 2024/0286776 A1, Aug. 29, 2024
Int. Cl. B64U 30/296 (2023.01); B64U 50/23 (2023.01); B64U 10/13 (2023.01)
CPC B64U 30/296 (2023.01) [B64U 50/23 (2023.01); B64U 10/13 (2023.01)] 4 Claims
OG exemplary drawing
 
1. A drone having a movable propeller shaft, the drone comprising:
a drone body having an opening formed thereon;
a plurality of propeller shafts arranged radially on the drone body, each propeller shaft having one side portion passing through the opening of the drone body to be disposed inside the drone body and a propeller housing equipped with a propeller and a propeller motor;
adjustment means disposed on the drone body, linked to the plurality of propeller shafts, respectively, and configured to adjust the respective angles and heights of the plurality of propeller shafts;
a sensor for sensing a rotation angle of each of the plurality of propeller shafts; and
a motor driver connected to each propeller, a current check circuit for determining whether current flow is normal, an MCU for transmitting and receiving signals in connection with the current check circuit and transmitting signals to the motor driver, and a main controller connected to the MCU through a wireless communication method,
wherein the adjustment means comprises,
a guide structure coupled to the opening of the drone body and provided with a guide hole through which penetrates and couples the propeller shaft;
a rotary drive unit formed at the other end of the propeller shaft, including an arc-shaped driven gear and a main drive gear gear-coupled to the driven gear, and comprising a motor installed inside the drone body;
a rotation shaft coupled to the interior of the drone, coupled to a propeller shaft, and supporting rotational operation of the propeller shaft; and
a control unit that controls the rotation angle of the motor and sets the rotation angle of the driven gear and the propeller shaft,
wherein the guide structure is formed with a fastener that is fastened to an opening of the drone body,
wherein the fastener is selected from the group consisting of screws, bolts, pins and rivets,
wherein the guide structure has the front and back surfaces formed by flat planes, or has a concave portion formed on the front surface and a convex portion formed on the rear surface, and
wherein the guide hole is formed to be long in the horizontal direction.