Vent Vane Linkage With Tilted Guide Notch for Lower Operating Force
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Solution Overview
Problem
Conventional air-conditioning vent vane adjusting devices require a large operating force due to tight assembly, making it difficult to open and close the vanes efficiently, and are costly and complex in structure.
Innovation Solution
An air-conditioning vent vane adjusting device featuring a push-button with a fixed plate having a tilted guide notch and a sliding lug, allowing for moderate operating force and easy installation, with the guide notch or groove facilitating the movement of the connecting plate to drive the board and vanes, reducing assembly tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a tight assembly is used to connect the board and connecting plate, then the structural strength is improved, but the operating force required becomes excessively large
Solution Approach 1:
The tight assembly structure is segmented into a fixed plate with guide notch and a board with lug. The guide notch provides a controlled sliding path that separates the functions of structural connection and motion guidance, allowing the lug to move smoothly along the inclined surface without requiring excessive force while maintaining structural integrity through the precise fit of the segmented components
Solution Approach 2:
The guide notch acts as an intermediary element between the fixed plate and the lug. It provides a controlled interface that guides the motion of the lug while distributing the operating force along its inclined surface, preventing direct transmission of large forces and enabling smooth operation with moderate force
2Reliability
If a complex structure is used to ensure reliable operation, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The complex assembly mechanism is extracted and replaced by a simple guide notch-lug interface. The guide notch's inclined surface extracts the need for complex linkages or springs, providing reliable one-way motion control through its geometric shape alone, while the overall structure remains simple and easy to manufacture
Solution Approach 2:
Instead of using complex mechanisms to guide motion, the invention inverts the approach by using a simple inclined guide notch that passively guides the lug's motion through its geometry. The fixed plate with guide notch provides the guiding function that would traditionally require complex linkages, achieving reliable operation with minimal structure
3Manufacturing precision
If conventional tight assembly methods are used, then the manufacturing precision is maintained, but the ease of installation deteriorates
Solution Approach 1:
The guide notch is pre-formed with the correct inclination angle and dimensions during manufacturing. This preliminary action ensures that when the lug is installed, it automatically follows the pre-defined sliding path, eliminating the need for complex alignment procedures and making installation straightforward while maintaining precise motion control
Data Source
AI summary
An air-conditioning vent vane adjusting device includes a board for driving a vane to rotate, a push-button slidably installed on a panel, and a connecting plate fixedly attached to the board. A fixed plate is coupled to the push-button and is moved together with the push-button, and the fixed plate has a guide notch tilted with respect to the longitudinal direction of the board. The board has a lug accommodated in the guide notch and capable of sliding in the guide notch. With the tilted guide notch and the lug, the board can be moved reciprocally to overcome the problems of requiring a large operating force of the push-button of the tight assembly of the conventional board and connecting plate and the difficulty of opening and closing a vane.