Abstract

An engine device for an unmanned flying apparatus that provides good weight balance for the flying apparatus; cancels the gyroscopic effect; and has auto rotating propellers. the final drive shaft, and driven by both the first crankshaft and the second crankshaft.

IPC Classes  ?

• B64U 50/20 - Transmission of mechanical power to rotors or propellers
• B64D 27/04 - Aircraft characterised by the type or position of power plants of piston type
• B64U 50/11 - Propulsion using internal combustion piston engines
• F01L 1/02 - Valve drive
• F01N 13/10 - Other arrangements or adaptations of exhaust conduits of exhaust manifolds
• F02B 75/24 - Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
• F01L 1/047 - Camshafts

Abstract

Provided is a transmission device for an unmanned aerial vehicle, wherein arms that drive propellers can be positioned so as not to interfere with an air cleaner and a radiator.　A transmission device for an unmanned aerial vehicle in which first through fourth arms are positioned on a machine body upper section and propellers are driven using a straight-four engine, said transmission device comprising: a drive gear that is attached to a crankshaft; a clutch shaft drive gear that meshes with said drive gear; a bevel gear that drives a drive shaft, said drive shaft being perpendicular to the clutch shaft; a drive shaft base gear that is driven by the bevel gear; a top section gear train that comprises a drive shaft main gear, a left sub-gear meshing with said main gear, a reverse gear meshing with said main gear, and a right sub-gear meshing with said reverse gear; first and second bevel gears that mesh with the left sub-gear and drive the first and second arms; and third and fourth bevel gears that mesh with the right sub-gear and drive the third and fourth arms.

IPC Classes  ?

• B64U 50/11 - Propulsion using internal combustion piston engines
• B64C 27/08 - Helicopters with two or more rotors
• B64D 27/04 - Aircraft characterised by the type or position of power plants of piston type
• B64D 31/14 - Transmitting means between initiating means and power plants
• B64D 33/08 - Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems
• B64U 10/14 - Flying platforms with four distinct rotor axes, e.g. quadcopters
• B64U 50/20 - Transmission of mechanical power to rotors or propellers

Abstract

Provided is an unmanned aircraft which has uniform lift and the overall airframe dimensions of which can be made small.　This unmanned aircraft is provided with four propeller shafts jutting horizontally along diagonals from the airframe, and four propellers constituted from twin blades having folding mechanisms. Engine rotation is transmitted to the propellers by gears. The unmanned aircraft is characterized in that: all of the propellers are at the same height from the tip end of the propeller shafts; the rotational ranges overlap those of the neighboring propellers; the mounting angles are set 90 degrees off from those of the neighboring propellers; and the rotational directions are mutually opposite from those of the neighboring propellers.

IPC Classes  ?

• B64C 27/635 - Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical specially for controlling lag-lead movements of blades
• B64C 27/08 - Helicopters with two or more rotors
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• B64D 27/04 - Aircraft characterised by the type or position of power plants of piston type
• B64D 27/10 - Aircraft characterised by the type or position of power plants of gas-turbine type
• B64U 10/14 - Flying platforms with four distinct rotor axes, e.g. quadcopters
• B64U 20/50 - Foldable or collapsible UAVs

Abstract

Provided is an engine device for an unmanned flying object, the engine device giving the aircraft body a favorable weight balance and being capable of cancelling out gyro effects and capable of autorotation of propellers.　The engine device comprises: a first cylinder and a second cylinder which are disposed facing each other in the horizontal direction, wherein pistons inside the cylinders advance/retreat in opposite directions of each other; a first crankshaft and a second crankshaft which are disposed in the vertical direction and are respectively driven by the first cylinder and the second cylinder to rotate in opposite directions of each other; a first centrifugal clutch and a second centrifugal clutch which rotate in opposites directions of each other; a final drive shaft which transmits a rotating force to a gear mechanism composed of an orthogonal conversion gear that rotates a propeller shaft; and a one-way clutch which is disposed between the first crankshaft/second crankshaft and the final drive shaft, and which is driven by both the first crankshaft and the second crankshaft.

IPC Classes  ?

• B64C 27/08 - Helicopters with two or more rotors
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• F01B 1/08 - Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders arranged oppositely relative to main shaft and of "flat" type
• F01B 1/10 - Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with more than one main shaft, e.g. coupled to common output shaft
• F16D 47/04 - Systems of clutches, or clutches and couplings, comprising devices of types grouped under at least two of the following sets of groups: of which at least one is a freewheel
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• F16D 43/04 - Internally controlled automatic clutches actuated entirely mechanically controlled by angular speed
• F16D 41/12 - Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
• F01L 1/02 - Valve drive
• F02B 75/18 - Multi-cylinder engines

Abstract

[ABSTRACT]The present invention provides an engine device for an unmanned flying apparatus that provides good weight balance for the flying apparatus; can cancel the gyroscopic effect; and has propellers that can auto rotate.The engine device of the invention comprises: a first cylinder and a second cylinder arranged horizontally and opposed to each other, and pistons within the cylinders advance and retract in opposite directions to each other; a first crankshaft and a second crankshaft arranged in the vertical direction, driven by the first cylinder and the second cylinder, respectively, and rotate in opposite directions to each other; a first centrifugal clutch and a second centrifugal clutch rotate in opposite directions to each other; a final drive shaft transmitting rotational force to a gear mechanism comprising orthogonal transform gears, to rotate a propeller shaft; a one-way clutch arranged between the first crankshaft, the second crankshaft and the final drive shaft.

IPC Classes  ?

• B64C 27/08 - Helicopters with two or more rotors
• F01N 13/08 - Other arrangements or adaptations of exhaust conduits
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use
• F01B 1/08 - Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders arranged oppositely relative to main shaft and of "flat" type
• F01B 1/10 - Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with more than one main shaft, e.g. coupled to common output shaft
• F02B 75/18 - Multi-cylinder engines
• F16D 43/04 - Internally controlled automatic clutches actuated entirely mechanically controlled by angular speed