US 12,434,867 B2
Propeller blade, propeller, power assembly, and multi-rotor unmanned aerial vehicle
Zailong Jiang, Shenzhen (CN); Qi Li, Shenzhen (CN); and Xiaoyu Chen, Shenzhen (CN)
Assigned to SZ DJI TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by SZ DJI TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed on Oct. 2, 2023, as Appl. No. 18/479,315.
Application 18/479,315 is a continuation of application No. PCT/CN2021/085981, filed on Apr. 8, 2021.
Prior Publication US 2024/0025573 A1, Jan. 25, 2024
Int. Cl. B64U 30/29 (2023.01); B64U 10/14 (2023.01)
CPC B64U 30/29 (2023.01) [B64U 10/14 (2023.01)] 19 Claims
OG exemplary drawing
 
1. A blade comprising:
a main body; and
an edge disposed around a periphery of the main body, a part of the edge including:
a soft layer; and
an intermediate layer connected between the soft layer and the main body, the intermediate layer including a soft component and a hard component stacked one on another when viewing in a cross-section along a width direction of the blade or along a length direction of the blade;
wherein:
the soft component includes two first parts arranged on two sides of the hard component in a thickness direction of the blade, each of the two first parts of the soft component is provided with a first member in contact with the hard component, the first member includes at least one of a groove, a through hole, a protrusion, or a rough layer, and a first contact surface between the soft component and the hard component is closer to the main body than a first edge of the first member in the width direction, the first contact surface being a contact surface between the soft component and the hard component that is closest to the main body in the width direction, and the first edge of the first member being an edge of the first member that is closest to the main body in the width direction; or
the hard component includes two second parts arranged on two sides of the soft component in the thickness direction, each of the two second parts of the hard component is provided with a second member in contact with the soft component, the second member includes at least one of a groove, a through hole, a protrusion, or a rough layer, and a second contact surface between the soft component and the hard component is closer to the main body than a second edge of the second member in the width direction, the second contact surface being a contact surface between the soft component and the hard component that is closest to the main body in the width direction, and the second edge of the second member being an edge of the second member that is closest to the main body in the width direction.