Wiper Linkage Locking Arm for Tool-Free Transport
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Solution Overview
Problem
Existing wiper mechanism linkages for motor vehicles face challenges during transport and installation due to multi-located joints, requiring locking elements that are disposable, tool-dependent, and generate waste, necessitating a more efficient and waste-reducing solution for blocking the linkage in transport position.
Innovation Solution
A holding arm with a movable locking element that translates between unlocked and locked positions to secure the connecting rod in the transport position, allowing for tool-free operation and remaining on the linkage post-installation, utilizing a design with parallel walls and retaining lugs to sandwich the connecting rod, facilitating reversible locking without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disposable locking elements are used to block the linkage in transport position, then the linkage can be securely locked during transport and installation, but the locking elements must be removed by cutting which generates debris and requires additional tools and treatment costs
Solution Approach 1:
The locking element is designed to be reusable rather than disposable. After installation, the locking element can be recovered and reused for future installations, eliminating the need to discard it after single use. This resolves the contradiction by maintaining reliable locking while avoiding debris generation from cutting disposable elements.
Solution Approach 2:
The invention replaces the mechanical cutting system with a reversible locking mechanism. Instead of using disposable elements that require cutting tools for removal, the new system uses a locking element with a retaining lug that can be released by simple manual manipulation, substituting the cutting mechanism with a reusable mechanical locking system.
2Reliability
If disposable locking elements are used to block the linkage, then the linkage can be securely locked during transport, but tools are required to remove the locking elements after installation
Solution Approach 1:
The locking element is designed to be self-servicing, allowing operators to lock and unlock the linkage without requiring external tools. The release mechanism can be actuated manually by the operator themselves, eliminating the need for cutting tools or specialized removal instruments.
Solution Approach 2:
The locking element incorporates a movable retaining lug that can transition between locked and unlocked positions. This dynamic design allows the locking mechanism to be easily engaged and disengaged through simple manual movement, providing tool-free operation while maintaining secure locking during transport.
3Reliability
If disposable locking elements are used, then the linkage can be blocked in transport position, but additional costs are generated for treating the debris
Solution Approach 1:
The locking element is designed for recovery and reuse rather than disposal. After the linkage is installed and the locking element is removed from the connecting rod, it can be recovered and reused for future installations, eliminating material waste and the costs associated with treating debris from disposable locking elements.
Solution Approach 2:
The invention changes the lifecycle parameter of the locking element from single-use to multi-use. By designing a reusable locking mechanism with a retaining lug that can be repeatedly engaged and disengaged, the system transforms the locking element from a consumable item into a durable component, reducing material waste and treatment costs.
Data Source
Figure 1~4B
AI summary
The present invention relates to a bearing (1) of a linkage of a wiping mechanism characterized in that the bearing (1) comprises a retaining arm (11) of a connecting rod in a transport position, the retaining arm (11) housing at its free end (11a) a locking element (13) of the connecting rod in a transport position, said locking element (13) being movable in translation between an unlocked position and a locking position in which the connecting rod is blocked in the transport position.