Spoiler Link Mechanism with Torsion Spring for Force Absorption
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Solution Overview
Problem
Existing movable spoiler devices face limitations in absorbing external forces due to restricted elastic deformation, which restricts the size of obstacles they can handle without damaging the actuator or links.
Innovation Solution
A movable spoiler device with a link mechanism comprising a drive link, intermediate link, and driven link connected annularly, where the intermediate link is composed of two division links that rotate against a torsion spring's pressing force, allowing for increased elastic deformation and absorption of external forces without damaging the actuator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the link is constituted of an elastically deformable member to absorb external force, then the spoiler can withstand obstacle interference, but the displacement amount of elastic deformation is limited due to the need for rigidity against wind pressure
Solution Approach 1:
The link is divided into two separate links (first link and second link) connected by a pressing member. This segmentation allows the system to achieve both rigidity and large displacement capability: the pressing member provides elastic deformation capacity while the two links maintain structural rigidity when needed.
Solution Approach 2:
The pressing member changes its elastic deformation parameter dynamically. When the spoiler encounters an obstacle, the pressing member elastically deforms to absorb external force. When the spoiler needs to maintain rigidity against wind pressure, the pressing member returns to its original state, providing both large displacement capability and structural strength.
2Stability of the object's composition
If the link is made rigid to resist wind pressure, then the spoiler maintains structural stability, but it cannot absorb large external forces from obstacles
Solution Approach 1:
By segmenting the link into two separate links connected by a pressing member, the system achieves a dual-state structure: rigid when needed for wind resistance, and flexible when needed for obstacle force absorption.
Solution Approach 2:
The pressing member provides dynamic adaptability, allowing the link assembly to transition between rigid and flexible states based on external conditions, achieving both wind pressure resistance and obstacle force absorption.
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 spoiler device effectively absorbs external forces during obstacle interference, preventing damage to the actuator and links by utilizing the torsion spring's elastic force, allowing for a larger displacement and improved obstacle handling capacity.
Implementation Method 1
The two division links are rotatable around the connection portion, and are pressed in rotational directions by a pressing member.
Implementation Method 2
utilizing the torsion spring's elastic force, allowing for a larger displacement and improved obstacle handling capacity
Data Source
AI summary
A spoiler device includes a link mechanism and a spoiler member. In the link mechanism, a drive link, an intermediate link, a driven link, and a fixed link are annularly connected. The drive link is driven by an actuator, thereby causing the link mechanism to operate as a four-joint link. The spoiler member is fixed to the intermediate link or the driven link. Any one of the drive link, the intermediate link, and the driven link is configured so as to include, two division links whose one end portions are connected by a connection portion. The two division links are rotatable around the connection portion, and are pressed in rotational directions by a pressing member.