Wiper Blade Linking Structure for Easier Release Lever Operation
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Solution Overview
Problem
The linking structure between the wiper arm and wiper blade in existing designs is difficult to operate, leading to poor operability during removal.
Innovation Solution
A wiper blade linking structure with a flexible release lever having a protrusion part that fits into a through hole of the wiper arm, allowing easy disengagement by protruding outside the linking part, and a bridging part to increase rigidity and facilitate operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the release lever tip is disposed recessed to the inner side of the connector for compact structure, then the device complexity is reduced, but the operability at the time of removing the linking deteriorates
Solution Approach 1:
The release lever tip protrudes in a direction perpendicular to the main body of the connector, extending outward from the inner side to the outer side. This dimensional change allows the tip to be accessible from the outside while maintaining a compact inner structure, resolving the contradiction between compact design and operational accessibility.
Solution Approach 2:
The release lever acts as an intermediary component that bridges the gap between the internal linking mechanism and the external operating environment. By extending the lever tip outward, it provides a convenient interface for user operation while the main body remains compactly integrated within the connector.
2Ease of operation
If the release lever is made flexible to bend for easy operation, then the ease of operation is improved, but the structural integrity may deteriorate
Solution Approach 1:
The release lever exhibits local quality differentiation: the root portion is designed with high strength to maintain structural integrity, while the tip portion is made flexible to enable easy bending operation. This localized variation in mechanical properties allows the lever to simultaneously achieve both strength and flexibility where needed.
Solution Approach 2:
The release lever transitions from a static rigid structure to a dynamic flexible component during operation. The lever is designed to bend elastically when operated, allowing temporary deformation for linking removal, then returns to its original shape, maintaining structural integrity while providing operational flexibility.
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
Improves the operability of removing the linking between the wiper arm and wiper blade, ensuring reliable disengagement and maintaining structural integrity during wiping operations.
Implementation Method 1
The lever part is flexible to bend toward a direction away from the bridging part
Implementation Method 2
a cylindrical part bonded to the pair of sidewalls and engaged with the engagement part
Data Source
AI summary
A linking structure of a wiper blade 12 includes a wiper arm 10, the wiper blade 12, a hook part 10a provided at the wiper arm 10, and a linking part 13 provided at the wiper blade 12. The hook part 10a has a tip side extension part 10b in which a through hole 10c is formed. The linking part 13 has: a pair of sidewalls 13a, 13b facing each other; a cylindrical part 13c bonded to the pair of sidewalls 13a, 13b and engaged with the hook part 10a; a release lever 13d provided at the cylindrical part 13c; and a bridging part 13g bonded to the pair of sidewalls 13a, 13b. The release lever 13d is flexible, and includes a protrusion part 13f fittable with the through hole 10c. The tip part 13e of the release lever 13d protrudes to the outside of the linking part 13.