Wiper Blade Adapter Latching Mechanism
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Solution Overview
Problem
Existing motor vehicle window wiper devices with spring elements and wiper blade adapters lack a stable and compact design, leading to potential movement issues between the wiper blade adapter and the spring element during operation.
Innovation Solution
Incorporating a round latching recess in the spring element and a latching element with two resilient latching arms that engage in a form-fitting manner, preventing movement in the longitudinal direction and allowing for a compact and flat design by deflecting in a vertical direction during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a conventional attachment mechanism is used between the wiper blade adapter and spring element, then the device can be assembled, but movement occurs in the longitudinal direction during operation, reducing stability
Solution Approach 1:
The patent employs a round latching recess with a curved geometry that receives a corresponding latching element. This curved interface provides form-fitting engagement that prevents longitudinal movement while maintaining stability during operation, directly resolving the contradiction between attachment stability and operational reliability.
2Stability of the object's composition
If the latching element is designed to prevent movement, then stability is improved, but the device becomes less compact due to increased space requirements for the latching mechanism
Solution Approach 1:
The latching element is designed to be received within the round latching recess, with the latching arms nesting into the curved recess space. This nested configuration provides stable form-fitting engagement while maintaining a compact overall device volume, as the latching mechanism utilizes existing spatial relationships rather than requiring additional external space.
3Ease of operation
If the latching arms are made resilient to allow deflection during assembly, then ease of assembly is improved, but the structural strength may be reduced
Solution Approach 1:
The latching arms are designed with resilient properties that allow dynamic deflection during the assembly process, enabling easy insertion into the round latching recess. Once assembled, the resilient arms maintain sufficient strength through elastic recovery, providing stable form-fitting engagement without requiring excessive structural mass.
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 configuration ensures a stable attachment of the wiper blade adapter to the spring element, achieving a compact and reliable wiper device design with enhanced operational stability and simplicity.
Implementation Method 1
a spring-elastic element which has at least one extension, in a normal operating state, of at least 10%, in particular at least 20%, preferably at least 30% and particularly advantageously at least 50% which is elastically changeable, and which in particular generates a counterforce which is dependent on a change in extension and is preferably proportional to the change and which counteracts the change
Implementation Method 2
If the at least one latching element is intended to be deflected at least essentially in a vertical direction during assembly, a particularly compact design can be achieved with high operational reliability at the same time
Data Source
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Figure 6~8
AI summary
The invention relates to a wiping device, in particular a wiping device for a motor vehicle pane, comprising a spring element (20a - 20d) and a wiper blade adapter (12a - 12d) that has at least one detent element (40a - 40d, 42a - 42d). According to the invention, the spring element (20a - 20d) has at least one circular detent cavity (26a - 26d, 28a - 28d) in which the at least one detent element (40a - 40d, 42a - 42d) interlockingly engages when mounted, preventing a movement of the wiper blade adapter (12a - 12d) relative to the spring element (20a - 20d) in a longitudinal direction (22a - 22d).