Rear Wiper Cover Stop Mechanism for Assembly Access
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Solution Overview
Problem
The cover of rear wiper assemblies in motor vehicles often flips downward during assembly and maintenance, interfering with tools and hindering efficient installation and removal of the head from the drive motor.
Innovation Solution
A rear wiper assembly with a stop mechanism featuring a first and second interference element, where one is elastic, prevents the cover from flipping by interfering when the cover is within a predetermined angular range, ensuring it remains open during assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cover is hinged to the rear wiper arm to allow opening for assembly/maintenance, then the head can be accessed for installation and removal from the drive motor, but the cover flips downward easily and interferes with assembly/disassembly tools
Solution Approach 1:
The stop mechanism applies a preliminary counteracting force to prevent the cover from flipping downward. The first interference element on the rear wiper arm and the second interference element on the cover create an elastic interference that generates a counteracting force before the cover can flip and interfere with tools, thus eliminating the harmful effect while maintaining the hinged opening function
2Weight of moving object
If the cover is made lightweight for easy handling, then assembly operations become simpler, but the cover cannot maintain its open position against gravity
Solution Approach 1:
The elastic interference between the first and second interference elements creates a preliminary counteracting force that balances gravity's effect on the lightweight cover. This allows the cover to remain lightweight for easy handling while the stop mechanism provides the necessary counterforce to maintain stability in the open position
Solution Approach 2:
The elastic interference elements automatically adjust to provide the necessary holding force. The elastic element deforms under the cover's weight and provides a self-regulating counterforce that maintains the cover in the open position without requiring additional weights or complex mechanisms
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
The stop mechanism effectively maintains the cover in an open position, facilitating smooth assembly and disassembly of the head from the drive motor, enhancing operational efficiency and reducing interference with tools.
Implementation Method 1
at least one of the first interference element and the second interference element being an elastic element
Data Source
AI summary
Provided is a rear wiper assembly having a rear wiper arm, a cover, a joint, and a motion-stopping mechanism. A connector and a cover are hingedly connected to the rear end of the rear wiper arm. When the cover is in a closed state, it covers the connector; the motion-stopping mechanism has a first interference element and a second interference element, at least one of the interference elements being a flexible element; the first interference element is arranged on the rear wiper arm, and the second interference element is arranged on the cover, when the cover is in an open state and when the angle between the upper surface of the cover and the upper surface of the rear wiper arm is within a predetermined range, the interference elements interfere with each other, preventing the cover from turning over in the direction of the connector.