Air Vent Control Knob for Independent Direction and Volume Adjustment
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Solution Overview
Problem
Existing air vent control mechanisms are unwieldy, often causing unintended adjustments in air flow volume when attempting to control direction, and vice versa, leading to user frustration and inefficient operation.
Innovation Solution
A control element featuring a rotatable or tiltable control knob with a coupling mechanism, allowing independent adjustment of air flow direction and volume through a positive feedback mechanism, combined with a gear device for precise control, and optional electrical actuation for enhanced functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single control button is used to control both air flow direction and volume, then device complexity is reduced, but unintended adjustments occur between direction and volume control
Solution Approach 1:
The control button is segmented into two functionally independent parts: an upper pressing area for controlling air flow direction (slats) and a lower pressing area for controlling air flow volume (throttle flap). This segmentation allows each area to control its specific function independently, preventing unintended adjustments while maintaining a unified button structure.
2Ease of manufacture
If the control button structure is simplified, then ease of manufacture is improved, but control precision and reliability deteriorate
Solution Approach 1:
Different regions of the control button have different local qualities: the upper pressing area is optimized for directional control with appropriate mechanical linkage to the slats, while the lower pressing area is optimized for volume control with linkage to the throttle flap. Each region's structural characteristics are tailored to its specific control function, ensuring precise response while maintaining overall manufacturing simplicity.
Data Source
Figure 1~3
Figure 4
Figure 5~10
AI summary
The element (1) has a circular operating knob (3) provided for controlling direction of airflow via a clutch transmission i.e. linkage. The circular operating knob is rotated in horizontal and vertical directions. A circular control wheel (2) and a pivoted lever are arranged around the operating knob. An adjusting element is tilted or rotated about an axis running radially in a center longitudinal axis of the operating knob in a center position for adjusting size of the airflow. The control wheel controls the airflow via connecting mechanical devices i.e. gear wheel devices.