Motor Crank Fixing Component for Wiper Assembly Alignment
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Solution Overview
Problem
Windshield wiper systems often experience misalignment during transport and assembly due to vibrations, requiring time-consuming rework to correct the motor crank position, leading to inefficiencies in the installation process.
Innovation Solution
A fixing component with a U-shaped receptacle and connecting element, such as a clip or hook, is used to securely lock the motor crank in place on the motor bracket, preventing unwanted movement during transport and storage, and allowing easy assembly and disassembly, ensuring the motor crank remains fixed until installation is complete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor crank is left unsecured during transport, then the windshield wiper system can be easily assembled and disassembled, but the motor crank position changes due to vibrations, requiring time-consuming rework
Solution Approach 1:
The fixing component is pre-installed on the motor bracket before the motor crank is mounted. This preliminary action creates a secure pathway that prevents the motor crank from moving during transport, while still allowing for easy installation by simply guiding the crank through the fixed component.
Solution Approach 2:
The fixing component acts as an intermediary element between the motor bracket and the motor crank. It provides a stable reference structure that maintains the motor crank's position during transport, yet allows for straightforward assembly and disassembly operations.
2Reliability
If the motor crank is secured during transport, then position stability is maintained, but the structure becomes more complex
Solution Approach 1:
The fixing component is divided into two separate parts: a fixing component attached to the motor bracket and a corresponding receiving structure on the motor crank. This segmentation allows each part to be simple in design while together providing reliable position stability during transport.
Solution Approach 2:
The fixing component is designed as a simple, inexpensive plastic piece that is easily manufactured and can be discarded after use. This approach maintains position stability during transport without requiring complex, expensive, or reusable securing mechanisms.
3Reliability
If the fixing component is designed to be secure, then the motor crank remains fixed during transport, but disassembly becomes difficult
Solution Approach 1:
The fixing component is designed with asymmetric geometry that provides stable fixation in one orientation during transport, but allows for easy removal by rotating or tilting the motor crank. The dynamic aspect enables the system to transition from a secure fixed state to an easy disassembly state.
Solution Approach 2:
The fixing component is pre-installed in a specific orientation on the motor bracket before the motor crank is attached. This preliminary positioning ensures secure fixation during transport, while the pre-established geometry facilitates straightforward disassembly by simply reversing the installation motion.
Data Source
Figure 1~3
Figure 4a~4b
Figure 5
AI summary
The system has a crank lever (13) that is arranged on an axle of an electric motor (15). A fixing device (1) includes a receiver, and is arranged on a motor bracket (11). The receiver locks the crank lever in a fixed position of the system, and the fixing device includes a connecting element for fastening to the system. Two U-shaped blades are spaced opposite to each other, and are fixed to a retainer. The connecting element is formed as clips with a latching lug and a hook, or as a pivot.