Foldable rotor blade assembly and aerial vehicle with a foldable rotor blade assembly

  • US 11,008,095 B2
  • Filed: 01/09/2019
  • Issued: 05/18/2021
  • Est. Priority Date: 01/10/2018
  • Status: Active Grant
First Claim
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1. An unmanned aerial vehicle, comprising:

  • a fuselage body; and

    a lift mechanism coupled to the fuselage body, the lift mechanism including;

    a motor assembly including a rotor and a stator operatively coupled to the rotor for rotating the rotor about a rotor centerline axis, the rotor including a blade assembly support member and a motor shaft extending outwardly from the blade assembly support member along the rotor centerline axis; and

    a rotor blade assembly coupled to the rotor, the rotor blade assembly including;

    a plurality of rotor blades, each rotor blade extending between a root portion and a tip portion, the root portion including a positioning aperture extending through the root portion; and

    a rotor blade clamping mechanism including;

    an upper paddle clamp including;



    an upper support body including an upper outer surface and a lower outer surface; and

    , 

    a plurality of blade support protrusions extending outwardly from the lower outer surface, each of the blade support protrusions configured to be inserted through a corresponding positioning aperture of a corresponding rotor blade to facilitate pivotably coupling the corresponding rotor blade to the upper paddle clamp, each blade support protrusion having a length that is greater than a thickness of the root portion of the corresponding rotor blade, wherein each blade support protrusion includes a blade fastener positioning aperture configured to receive a blade fastener; and

    a lower paddle clamp including;



    a lower support body; and



    a plurality of apertures defined along an outer surface of the lower support body, each aperture in the outer surface of the lower support body being aligned with a respective blade fastener positioning aperture for receiving the respective blade fastener, the upper and lower support bodies forming a gap configured to receive the root portion of a respective rotor blade, the gap having a predefined distance, the upper and lower paddle clamps forming a center shaft aperture configured to receive the motor shaft therethrough,wherein the root portion of each rotor blade is in contact with the upper paddle clamp and the lower paddle clamp.

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