Wiper Blade Wind Deflector Recess for Flat Aerodynamic Profile
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Solution Overview
Problem
Existing wiper blade devices with wind deflector elements and end caps struggle to achieve a compact and flat design while ensuring effective attachment and aerodynamic performance.
Innovation Solution
The wiper blade device incorporates a wind deflector element with a recessed top wall and a guide means for the wind deflector tip, allowing the wind deflector element to protrude beyond the top wall, and an end cap with a latching mechanism for secure attachment, resulting in a particularly flat and compact design with enhanced assembly simplicity and operational reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the end cap is designed to cover the wind deflector element, then the aerodynamic performance is improved, but the overall height increases and the design becomes less compact
Solution Approach 1:
The wind deflector tip is nested within the recess of the end cap's top wall, allowing the end cap to cover the wind deflector element for aerodynamic performance while the recess accommodates the protruding tip without increasing overall height
Solution Approach 2:
The top wall of the end cap features a localized recess specifically at the region where the wind deflector tip protrudes, providing coverage where needed while maintaining a compact profile by not extending the overall height
2Shape
If the wind deflector element protrudes beyond the top wall, then a flat design is achieved, but the attachment reliability may be compromised
Solution Approach 1:
The wind deflector tip protrudes beyond the top wall to achieve a flat design, while the recess in the top wall provides a guiding and accommodating structure that ensures reliable attachment by constraining the tip's position
Solution Approach 2:
The recess acts as an intermediary structure between the protruding wind deflector tip and the end cap body, providing both the flat profile and the attachment reliability through its guiding function
3Reliability
If the end cap extends further in longitudinal direction, then attachment security is improved, but the device complexity increases
Solution Approach 1:
The end cap features localized guide means and latching means at specific positions rather than extending uniformly, providing attachment security where needed while maintaining simplicity by limiting the overall structural complexity
Data Source
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AI summary
The invention relates to a wiper blade device with at least one wind deflector element (10) and with at least one end cap (12), which includes a cover wall (14) designed to cover an end region (16) of the at least one wind deflector element (10). It is proposed that the cover wall (14) includes a recess (18) and that the wind deflector element (10) includes a wind deflector tip (20) which, at least in an assembled state, is guided through the recess (18).