Wiper Blade Connector Claw Structure to Prevent Spoiler Separation
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Solution Overview
Problem
Existing wiper blade devices suffer from the issue of spoilers detaching unexpectedly from the connector, leading to impaired wiper operation and safety risks during driving.
Innovation Solution
A wiper blade device with a connector design featuring a first claw and a second claw that support the spoiler member in the height direction, where the second claw is positioned closer to the center and does not contact the wiper lip, preventing the spoiler from separating even under external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spoiler and connector are coupled using a simple sliding structure, then the device complexity is reduced and ease of manufacture is improved, but the reliability deteriorates as the spoiler may detach unexpectedly under external forces
Solution Approach 1:
The connector is segmented into multiple functional components: a body portion, a spoiler fixing portion with multiple claws (first claw, second claw, third claw), and a support member. This segmentation allows each component to perform its specific function while collectively providing reliable connection and preventing spoiler detachment under external forces.
Solution Approach 2:
The spoiler fixing portion is designed with multiple claws that preliminarily engage with the spoiler member before any external force is applied. The first claw prevents upward detachment, the second claw prevents downward detachment, and the third claw provides additional support. This preliminary engagement structure ensures the spoiler remains securely attached even when unexpected external forces act on it.
2Reliability
If multiple claws are added to the connector to prevent spoiler detachment, then the reliability is improved, but the ease of operation deteriorates due to more complex assembly and disassembly procedures
Solution Approach 1:
The connector incorporates a support member that provides elastic restoring force. This dynamic element allows the connector to flex and adapt during assembly and disassembly operations, making the multi-claw structure easier to operate. The elastic support member absorbs assembly forces and facilitates smooth engagement and disengagement of the spoiler member with the multiple claws.
Solution Approach 2:
The support member acts as an intermediary between the spoiler member and the connector body. It mediates the interaction forces during assembly and disassembly, reducing the direct mechanical stress on the multiple claws and making the overall operation simpler and more顺畅.
3Reliability
If the second claw is positioned closer to the center and designed not to contact the wiper lip, then the reliability is improved by preventing spoiler separation, but the device complexity increases due to precise positioning requirements
Solution Approach 1:
Each claw is designed with specific local qualities and functions: the first claw is positioned to prevent upward detachment, the second claw is positioned closer to the center to prevent downward detachment without contacting the wiper lip, and the third claw provides additional support. This localized functional differentiation optimizes the anti-detachment capability while managing manufacturing precision requirements through clear functional assignment to each component.
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 improved connector structure effectively prevents the spoiler from detaching from the connector, ensuring stable wiper operation and enhancing driving safety by maintaining the integrity of the wiper blade assembly.
Implementation Method 1
a support member (vertebra) providing an elastic restoring force to the spoiler
Implementation Method 2
a spoiler portion configured to generate pressure downwardly by flow of air
Data Source
AI summary
A wiper blade device includes a support member, a spoiler member including a support member accommodating portion, a wiper lip accommodating portion, and a spoiler portion, wherein the support member accommodating portion is shapes as a tunnel, the wiper lip accommodating portion has a wiper lip coupled thereto, and a spoiler portion configured to generate pressure downwardly by flow of air, a wiper lip that is coupled to the wiper lip accommodating portion, and a connector disposed on a central portion of the support member and fixed to the spoiler member, in which the connector includes a spoiler fixing portion in a form of a groove open downward, the spoiler fixing portion includes a first claw and a second claw that support the spoiler member in a height direction of the wiper lip to prevent the spoiler member from being separated downward from the connector.