Windshield Wiper Linkage Plate Locking Mechanism
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Solution Overview
Problem
Existing windshield wiper actuation linkage systems face issues with complex and bulky designs that lack efficient retention, requiring high manual force for assembly and being limited to specific bearing positions, which complicates the use of alternative positions.
Innovation Solution
A fixing device with a plate and locking members that move in translation and deformation to engage with the vehicle bodywork, allowing for secure locking without the need for complex movements or high force, enabling flexible positioning of the bearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional screw-nut type means are used to fix the plate to the bodywork, then the fixing is simple and economical, but the retention is not sufficient in the event of breakage
Solution Approach 1:
The locking member is divided into distinct functional segments: a body portion that engages with the plate, a locking portion that interacts with the bodywork, and a movable element that transitions between locked and unlocked states. This segmentation allows each part to perform its specific function efficiently while maintaining overall simplicity
Solution Approach 2:
The locking member is designed to be self-actuating through its movable element that can be manually operated to transition between locked and unlocked states. Once engaged, the mechanism maintains its locked state automatically without requiring additional components or complex control systems
2Reliability
If the locking member is made of metal to ensure strength, then the retention is reliable, but the device becomes bulky and heavy
Solution Approach 1:
The locking member utilizes elastic deformation as its operating principle, allowing it to flex during the locking and unlocking process. This elastic behavior enables the use of lighter materials while maintaining sufficient mechanical strength, as the design exploits the material's inherent elastic properties rather than relying solely on mass for strength
3Manufacturing precision
If the plate is designed for specific bearing positions, then the fixing is precise, but the adaptability to alternative positions is limited
Solution Approach 1:
The locking member is designed with universal engagement features that can accommodate multiple bearing positions. The body portion and locking portion are configured to work with complementary elements in the bodywork that can be positioned at different locations, allowing the same locking mechanism to serve multiple installation positions while maintaining precise fixation at each position
4Reliability
If the locking mechanism requires great force for rotation, then the locking is secure, but it is difficult to achieve manually
Solution Approach 1:
The locking member incorporates a movable element that transitions dynamically between different states. During operation, the element flexes elastically to overcome the locking engagement, then snaps into the locked position. This dynamic operation reduces the peak force required compared to rigid rotational mechanisms, making it feasible for manual actuation while maintaining secure locking
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 provides a simple, efficient, and economical method for securing the windshield wiper linkage system, ensuring stable retention and allowing for flexible positioning without increasing device size or complexity.
Implementation Method 1
said locking member being movable, deformable or movable from an unlocking position in which said plate can be moved between its first and its second position, and vice versa, up to a locking position in which said member is configured to cooperate with said bodywork to immobilize said plate in its second position
Data Source
Figure 1~2
Figure 3~6
Figure 7a~9
AI summary
A fastening device (30) for a windshield wiper actuation linkage system, this device comprising a plate (32) intended to be fixed to a vehicle body (36), and at least one locking member (34) intended to cooperate with said body to lock the fixing of the plate to the body, characterized in that said plate is configured to be moved in translation in the joint plane with said body, and in that said locking member is movable, deformable or displaceable from an unlocked position to a locked position.