Wiper Blade Adapter Rib Locking for Stable Arm Shaft Connection
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Solution Overview
Problem
The existing connection systems between wiper blades and driving arms in vehicle wiper systems often experience pivoting or slippage, which disrupts the movement of the wiper blade and impairs the quality of the windscreen sweep.
Innovation Solution
An adapter with immobilizing members, such as ribs, is used to secure the driving arm's shaft within a pivot member, preventing pivoting and translational movement between the adapter and the driving arm, ensuring a stable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shaft of the driving arm passes through openings in the adapter without immobilizing members, then the adapter can be easily assembled and disassembled, but pivoting or slippage occurs between the adapter and the driving arm
Solution Approach 1:
The patent applies local quality by adding immobilizing members (such as ribs or protrusions) only at specific locations within the adapter's openings, rather than making the entire adapter structure complex. These localized features prevent pivoting and slippage of the shaft while maintaining simplicity elsewhere in the design, thus improving connection stability without significantly increasing overall device complexity.
Solution Approach 2:
The immobilizing members act as intermediaries between the shaft and the adapter body. These ribs or protrusions mediate the interaction by providing localized contact points that prevent relative movement, thereby ensuring reliable connection stability while keeping the overall structure simple and easy to assemble.
2Reliability
If immobilizing members such as ribs are added to the pivot member, then pivoting between the shaft and adapter is blocked, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the immobilizing members (ribs or protrusions) with the pivot member as an integrated structure. Rather than being separate components that require additional assembly steps, these features are formed as part of the pivot member itself, which simplifies the manufacturing process while still providing the necessary anti-pivoting function to ensure connection stability.
Solution Approach 2:
The patent utilizes parameter changes in the geometry of the pivot member by incorporating ribs or protrusions with specific dimensions and orientations. By optimizing these geometric parameters, the design achieves reliable prevention of shaft pivoting while maintaining manufacturability through standard machining or molding processes.
3Manufacturing precision
If the shaft is wedged within the pivot member using immobilizing members, then precise movement of the wiper blade is ensured, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the interaction between the shaft and adapter into distinct functional zones: the opening for shaft passage and the localized immobilizing members for precision control. This segmentation allows the shaft to pass through easily while specific ribs or protrusions provide precise positioning, achieving movement precision without requiring the entire structure to be complex.
Solution Approach 2:
The patent uses local quality by concentrating the precision-control features (immobilizing members) only where needed at the shaft-adapter interface. These localized ribs or protrusions provide the necessary wedging action for precise movement control without adding complexity to other parts of the adapter, thus achieving high manufacturing precision with minimal structural complexity.
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
This solution prevents slippage and ensures precise movement of the wiper blade, maintaining the quality of the windscreen sweep by immobilizing the adapter relative to the driving arm, allowing the wiper blade to pivot correctly and follow the windscreen curvature.
Implementation Method 1
the shaft of the driving arm for this purpose being wedged within this pivot member
Data Source
AI summary
The invention relates to an adapter (25) intended to connect a wiper blade to a driving arm for a vehicle via a connector (24), having a first lateral wall (251) and a second lateral wall (252) between which an upper wall (250) is positioned, at least one of these lateral walls (251) comprising a pivot member intended to allow the adapter (25) to rotate with respect to the connector (24), the pivot member comprising at least one hole (451) configured to receive a shaft of the driving arm. According to the invention, this hole (451) has at least one rib able to block pivoting between the shaft of the driving arm and the adapter (25).