Wiper Blade Assembly Rotating Cap Mechanism
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Solution Overview
Problem
Existing wiper blade assemblies are difficult for beginners to engage and disengage with the wiper arm, requiring additional connector members and lacking clarity in the engagement process, making it hard to replace the wiper blade assembly.
Innovation Solution
A wiper blade assembly design featuring a cap member that rotates relative to pressing plates, with hollows and supports, allowing easy engagement and disengagement of the U-shaped hook type wiper arm by opening and closing the adaptor's front region, and including locking jaws that are released by pressing plates to facilitate rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a connector member is added to connect the wiper arm to the adaptor, then the connection is achieved, but the device complexity increases and ease of operation deteriorates
Solution Approach 1:
The connector member is extracted and eliminated from the system. Instead of using a separate connector member to join the wiper arm to the adaptor, the wiper arm is directly engaged with the adaptor through a simplified coupling mechanism where the wiper arm's hook portion fits into the adaptor's coupling hole, reducing the number of parts and simplifying the connection process
Solution Approach 2:
The functions of the connector member, adaptor, and wiper arm coupling interface are merged into a single integrated coupling mechanism. The adaptor's coupling hole and the wiper arm's hook portion form a direct connection without requiring an intermediate connector member, combining multiple functions into one simplified interface
2Ease of operation
If the adaptor structure is simplified to eliminate connector members, then the ease of operation improves, but the reliability of connection may deteriorate
Solution Approach 1:
The coupling mechanism incorporates dynamic elements including a rotatable cap member that transitions between locked and unlocked positions, and pressing plates that apply elastic force through elastic pieces to maintain secure connection. The system moves from a static simple hole-and-hook design to a dynamic system with controlled motion and force application, ensuring reliable connection while maintaining ease of operation
Solution Approach 2:
The cap member is preliminarily positioned to cover and protect the coupling hole before engagement, and the pressing plates are preliminarily configured with elastic pieces that pre-load the connection interface. This preliminary preparation ensures that when engagement occurs, the connection is immediately secure and reliable without requiring complex assembly steps
Data Source
AI summary
Disclosed herein is a wiper blade assembly, including: an adaptor; and a cap member connected to a predetermined region of a front of the adaptor to rotate, wherein the cap member includes one or more hollows, the adaptor includes one or more pressing plates, and the cap member is rotated relative to the one or more pressing plates in a state where the one or more pressing plates are inserted in the one or more hollows. Since a wiper arm can be easily attached or detached by the rotation of the cap member, the wipe blade assembly can be easily attached to or detached from the wiper arm even by a beginner.