Flapping Wing Crank-Slider Mechanism for Stable Levitation
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Solution Overview
Problem
Existing wing flapping apparatuses face inefficiencies in motion due to slow wing unit speed and incomplete backswing, leading to low levitation force and unstable attitude, which deteriorates flight ability.
Innovation Solution
A wing flapping apparatus with a power transmission mechanism that includes a rotation transmission member, a slider, and rotating bodies, utilizing a pair of crank arms connected to the slider to convert rotational motion into reciprocating motion, allowing the wing unit to swing efficiently in the front-rear direction, with the slider's movement opposite to the wing unit's swinging direction, creating an idle running state to stabilize the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the wing unit moves at a slow speed, then the levitation force of the wing flapping apparatus is low, but the motion efficiency decreases and flight ability deteriorates
Solution Approach 1:
The patent applies dynamics by making the connection between the crank arm and slider movable rather than fixed. The crank arm's other end is movably connected to the slider, allowing the connection point to shift dynamically during operation. This dynamic adjustment optimizes the force transmission angle and maintains higher wing unit speeds throughout the flapping cycle, thereby improving both levitation force and motion efficiency simultaneously
2Stability of the object's composition
If the wing unit incompletely swings back, then the attitude of the wing flapping apparatus becomes unstable, but the motion efficiency decreases and flight ability deteriorates
Solution Approach 1:
The movable connection between the crank arm and slider enables dynamic adjustment of the mechanism's geometry during operation. This allows the wing unit to achieve complete backswing motion while maintaining optimal force transmission angles throughout the cycle, ensuring attitude stability without sacrificing motion efficiency
Solution Approach 2:
The patent changes the geometric parameters of the mechanism dynamically through the movable connection. As the mechanism operates, the position parameters of the connection point change, allowing the system to maintain optimal configuration for both complete backswing and efficient motion transmission, thereby achieving stability and efficiency simultaneously
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances motion efficiency by ensuring smooth and stable wing unit operation, increasing levitation force, and reducing load fluctuations on the motive power source, resulting in improved flight ability.
Implementation Method 1
a rotation transmission member configured to rotate about a first rotation axis as a center of rotation upon reception of the motive power transmitted from the motive power source; a slider configured to linearly reciprocate in a first direction upon reception of the motive power transmitted from the rotation transmission member
Implementation Method 2
a rotating body configured to, upon reception of the motive power transmitted from the slider, reciprocate in a rotation direction about a second rotation axis as a center of rotation
Implementation Method 3
The wing unit has a proximal end and a distal end, the proximal end being fixed to the rotating body, to allow the wing unit to swing such that the distal end moves approximately in the first direction as the rotating body reciprocates in the rotation direction
Data Source
AI summary
A wing flapping apparatus includes a motive power source; a power transmission mechanism; and a wing unit driven by the power transmission mechanism. The power transmission mechanism includes a rotation transmission member configured to rotate upon reception of motive power transmitted from the motive power source; a slider configured to linearly reciprocate in an X-axis direction upon reception of the motive power transmitted from the rotation transmission member and a rotating body configured to reciprocate in a rotation direction upon reception of the motive power transmitted from the slider. The wing unit is configured to swing such that its distal end moves approximately in the X-axis direction as the rotating body reciprocates in the rotation direction. The power transmission mechanism further includes a pair of crank arms each configured to connect the rotation transmission member and the slider. The pair of crank arms each has: one end rotatably connected to the rotation transmission member and the other end rotatably and slidably connected to the slider.