US 12,637,213 B2Granted

Flapping device

AssigneeNakakita Seisakusho Co. Ltd.

InventorMasaki Hamamoto

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Abstract

A flapping device that is compact and is capable of acquiring high mobility is provided. A flapping device 1 has blades 2, 2 and a pair of drive units 3, 3 disposed in correspondence with the blades 2, 2, and the drive unit 3 includes: a first drive source 30U; a second drive source 30D; a first driven part 10U being rotated around a first rotation axial line by the first drive source 30U; a second driven part 10D being rotated around a second rotation axial line by the second drive source 30D; a first vibration excitation member 40U biasing the first driven part 10U in a direction opposite to a rotation direction of the first driven part 10U; a second vibration excitation member 40D biasing the second driven part 10D in a direction opposite to a rotation direction of the second driven part 10D; and a control unit 60. The blade 2 has: a first blade shaft 20 that is connected to the first driven part 10U and is rotatable around a third rotation axial line intersecting a first rotation axial line; a second blade shaft 21 that is connected to the second driven part 10D and is rotatable around a fourth rotation axial line intersecting a second rotation axial line; and a blade main body 22.

Claims9

Dependent claims

A flapping device comprising:

a pair of blades;
and
a pair of drive units disposed in correspondence with the pair of blades,
wherein the drive unit includes:
a first drive source;
a second drive source;
a first driven part receiving power output from the first drive source and rotating around a first rotation axial line;
a second driven part receiving power output from the second drive source and rotating around a second rotation axial line;
a first vibration excitation member applying a biasing force to the first driven part in a direction opposite to a rotation direction of the first driven part in accordance with rotation of the first driven part;
a second vibration excitation member applying a biasing force to the second driven part in a direction opposite to a rotation direction of the second driven part in accordance with rotation of the second driven part;
and
a control unit performing output control of driving forces of the first drive source and the second drive source, and
wherein the blade has:
a first blade shaft extending in a predetermined axial line direction and being connected to the first driven part on a one end side and connected rotatably in a third rotation axial line surrounding direction intersecting the first rotation axial line;
a second blade shaft extending in a direction intersecting the first blade shaft and being connected to the second driven part on a one end side and connected rotatably in a fourth rotation axial line surrounding direction intersecting the second rotation axial line;
and
a blade main body disposed over the first blade shaft and the second blade shaft.

14 more elements

A flapping device comprising:

a pair of blades;
and
a pair of drive units disposed in correspondence with the pair of blades,
wherein the drive unit includes:
a first drive source;
a second drive source;
a first driven part receiving power output from the first drive source and rotating around a first rotation axial line;
a second driven part receiving power output from the second drive source and rotating around a second rotation axial line;
a first vibration excitation member applying a biasing force to the first driven part in a direction opposite to a rotation direction of the first driven part in accordance with rotation of the first driven part;
a second vibration excitation member applying a biasing force to the second driven part in a direction opposite to a rotation direction of the second driven part in accordance with rotation of the second driven part;
and
a control unit performing output control of driving forces of the first drive source and the second drive source,
wherein the blade has:
a first blade shaft extending in a predetermined axial line direction and being connected to the first driven part on a one end side and connected rotatably in a third rotation axial line surrounding direction intersecting the first rotation axial line;
a second blade shaft extending in a direction intersecting the first blade shaft and being connected to the second driven part on a one end side and connected rotatably in a fourth rotation axial line surrounding direction intersecting the second rotation axial line;
and
a blade main body disposed over the first blade shaft and the second blade shaft,
wherein the first vibration excitation member is connected to the first driven part on a one end side and is directly or indirectly connected to the first blade shaft on the other end side, and
wherein the second vibration excitation member is connected to the second driven part on a one end side and is directly or indirectly connected to the second blade shaft on the other end side.

16 more elements

Dependencies are inferred from the claim text.