Movable Spoiler Linkage for Low-Friction Rear Deployment
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Solution Overview
Problem
Existing movable spoiler devices suffer from high frictional effects in their link mechanisms, leading to poor operability and hindering smooth movement of the movable part, which affects the aerodynamic performance and energy efficiency of vehicles.
Innovation Solution
A movable spoiler device with a link mechanism comprising a fixed link and a movable link, both supported by different axes, is designed to reduce friction by allowing the rotation of the movable part between positions, where the rotation of the fixed link is connected to an actuator, and the movable link is connected to the movable part, enabling smoother movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complicated link mechanism is used to drive the movable part, then the aerodynamic performance can be adjusted, but the frictional effect increases and operability deteriorates
Solution Approach 1:
The link mechanism is divided into multiple independent links (first link, second link, third link, fourth link) that can rotate relative to each other around fixed axes. This segmentation allows each link to move independently with minimal friction, resolving the contradiction between achieving aerodynamic adjustment and maintaining smooth operability
Solution Approach 2:
The mechanism uses rotatable links with fixed rotation axes to create a dynamic system that can smoothly transition between positions. The movable part can move forward and backward relative to the fixed part through the coordinated rotation of links, providing both adjustability and smooth operation
2Manufacturing precision
If a link mechanism with multiple components is used, then the movable part can be positioned accurately, but the frictional effect increases
Solution Approach 1:
The positioning system is segmented into discrete links (first, second, third, and fourth links) that rotate around predetermined fixed axes. This segmentation enables precise positioning through controlled rotation of each link while minimizing friction by maintaining fixed rotation axes rather than sliding contacts
Solution Approach 2:
The mechanism replaces high-friction sliding mechanical connections with low-friction rotational connections around fixed axes. The actuator drives the first link to rotate, which through the link mechanism translates to precise movement of the movable part with reduced energy loss to friction
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 reduces friction in the link mechanism, enhancing the operability and improving the aerodynamic performance of vehicles by allowing smoother movement of the movable part, thus contributing to better energy efficiency.
Implementation Method 1
the frictional effect generated by the complicated link mechanism is large, resulting in poor operability of the movable spoiler device
Data Source
AI summary
A movable spoiler device includes: a fixed part, fixed on a body of a vehicle; a movable part, configured to be movable between a storage position connected to the fixed part and a deployed position protruding from the fixed part toward rear of the vehicle; an actuator, disposed on the fixed part and drives the movable part to move in a front-rear direction of the vehicle; a link mechanism, connected to the actuator and the movable part, in which the link mechanism includes: a fixed link, rotatably supported on the fixed part with a first axis, and connected to the actuator; a movable link, rotatably supported on the fixed link with a second axis different from the first axis and connected to the movable part. The fixed link is driven to rotate by the actuator, and the movable link drives the movable part to move relative to the fixed part.