Wiper Retaining Element With Offset Fastening Recesses
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Solution Overview
Problem
Existing motor vehicle window wiper devices lack a stable and efficient mechanism for coupling the holding element with the wiper blade adapter, leading to potential instability and complexity in design and installation.
Innovation Solution
The wiper device incorporates a retaining element with at least three fastening recesses offset in the longitudinal direction, forming a form fit with the wiper blade adapter, and features a latching element that prevents vertical and longitudinal movement, allowing for a secure and compact design with reduced weight and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stable coupling mechanism is implemented using multiple fastening recesses and latching elements, then the reliability and structural integrity of the wiper device is improved, but the device complexity and number of components increases
Solution Approach 1:
The holding element integrates multiple functions into a single component: it provides the longitudinal guide channel for the spring element, incorporates three fastening recesses for form-fit coupling with the wiper blade adapter, and includes lateral contact surfaces for the latching element. This merging of functions reduces the total number of separate components while maintaining stable coupling.
Solution Approach 2:
The coupling mechanism is segmented into distinct functional zones within the holding element: the longitudinal guide channel for spring element movement, the three offset fastening recesses for positional alignment and form-fit coupling, and the lateral contact surfaces for preventing longitudinal movement. This segmentation allows each feature to perform its specific function efficiently.
2Manufacturing precision
If three fastening recesses offset in the longitudinal direction are used to form a form fit with the wiper blade adapter, then the manufacturing precision and assembly accuracy are improved, but the ease of manufacture decreases
Solution Approach 1:
The three fastening recesses are pre-positioned and pre-shaped during the manufacturing of the holding element, establishing the precise spatial relationship between the holding element and wiper blade adapter before assembly. This preliminary action ensures that when the wiper blade adapter is installed, the components are automatically aligned with high precision without requiring complex adjustment procedures.
3Stability of the object's composition
If the latching element prevents movement in vertical and longitudinal directions, then the stability of the coupling is improved, but the ease of operation during installation and removal is worsened
Solution Approach 1:
The latching element is designed as a resilient component that can dynamically change its position: it can be elastically deflected to disengage from the lateral contact surface of the holding element, allowing for easy installation and removal. Once released, the latching element automatically returns to its original position, re-establishing the stable coupling that prevents vertical and longitudinal movement during operation.
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 achieves a stable and easy-to-install wiper device with a compact design, ensuring high operational reliability and a secure coupling between the holding element, spring element, and wiper blade adapter, enhancing the device's structural integrity and ease of assembly.
Implementation Method 1
A spring element (20a, 20b) is provided which, in a normal operating state, is at least 10%, in particular at least 20%, preferably at least 30% and particularly advantageously at least 50% 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.
Data Source
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AI summary
The invention relates to a wiping device, in particular a wiping device for a motor vehicle pane, comprising a retaining element (10a-10f) with at least one longitudinal guide channel (18a - 18f) for guiding at least one spring element (20a - 20f). According to the invention, the retaining element (10a -10f) has at least three fixing cavities (26a -26f, 28a -28f, 30a -30f, 32a) that are offset in the longitudinal direction (22a -22f) and that are provided in order to interlock with a wiper blade adapter (12a -12f).