Pivotable Wiper Arm Securing Element for Assembly Visibility
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Solution Overview
Problem
The existing wiper device design makes it difficult for users to visually align and mount the wiper blade with the wiper arm due to the obstructive securing element, leading to unfriendly and challenging assembly processes.
Innovation Solution
The securing element is made pivotable in addition to its longitudinal displaceability, allowing it to be positioned for clear visibility of the connection area between the wiper arm and wiper blade adapter, with features like ribbing and stop elements to facilitate assembly and prevent accidental detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the securing element is arranged in a fixed position on the wiper arm, then the wiper blade is securely fixed, but the connection area is obscured making assembly difficult
Solution Approach 1:
The securing element is made pivotable relative to the wiper arm, allowing it to move between a first position during assembly where it covers the connection area, and a second position during operation where it secures the wiper blade. This dynamic repositioning resolves the contradiction by providing visibility when needed while maintaining security when required.
2Ease of operation
If the securing element is made movable to improve visibility, then assembly becomes easier, but the risk of accidental detachment increases
Solution Approach 1:
The securing element's pivotability is controlled through a defined range of motion with stops at specific positions. The element can pivot to the first position for assembly visibility and to the second position for secure attachment, but cannot accidentally detach due to the constrained angular movement and positioning stops.
Solution Approach 2:
The securing element acts as an intermediary between the wiper arm and wiper blade, providing both visibility control and secure attachment. Its dual-position design allows it to mediate between the conflicting requirements of assembly accessibility and operational security.
3Reliability
If the securing element covers the connection area during operation, then the wiper blade is securely retained, but visual alignment during mounting is prevented
Solution Approach 1:
The securing element dynamically changes its position based on the operational phase. During mounting, it pivots to the first position that allows visual alignment while still providing retention through the positioning stops. During operation, it pivots to the second position that maximizes retention security.
Data Source
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AI summary
The invention relates to a wiper device (100) for cleaning vehicle windows (1), having an interchangeably fastened wiper blade (10) on a wiper arm (2), said wiper blade being connected to the wiper arm (2) by means of a wiper blade adapter (11). In the fastening region with the wiper blade (10), the wiper arm (2) has a substantially U-shaped cross-section gripping the wiper blade adapter (11). A moveably arranged securing element (27) for the wiper blade adapter (11) is provided in the connecting area on the wiper arm (2), at least in the longitudinal direction of the wiper arm (2), covering the wiper arm (2) in the connecting area, at least in certain sections, and has a substantially U-shaped cross section, with retaining sections (46, 47) projecting inwards in the direction of the wiper blade adapter (11). According to the invention, the securing element (27) is additionally arranged on the wiper arm (2) in a manner such that it can be pivoted in order to be longitudinally displaceable.