Split-Blade Car Air Vent for Vertical Airflow Adjustment
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Solution Overview
Problem
Conventional car air vents face difficulties in effectively adjusting wind direction vertically due to the horizontal blade's central location, resulting in inadequate changes in wind direction when adjusting the adjustment knob.
Innovation Solution
The air vent design includes upper and lower horizontal blades with a link mechanism, vertical blades, and an adjustment knob with a rotation bar, allowing for precise upward and downward wind direction adjustment through coordinated rotation of the blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single horizontal blade is located at the center of the discharge port, then the structure is simple, but the wind direction cannot be effectively adjusted in the vertical direction
Solution Approach 1:
The horizontal blade is divided into an upper horizontal blade and a lower horizontal blade that can be independently adjusted. This segmentation allows each blade to control different portions of the airflow, with the upper blade affecting upper airflow regions and the lower blade affecting lower airflow regions, thereby achieving effective vertical wind direction adjustment throughout the entire discharge port
Solution Approach 2:
The adjustment mechanism is extended from a single-dimensional central control to a two-dimensional control system where both upper and lower blades can be independently adjusted. The link mechanism connects vertical movement of the adjustment knob to coordinated rotation of both blades, adding dimensional control capability that enables comprehensive vertical airflow management
2Ease of operation
If the horizontal blade is located at the center, then the structure is simple, but airflow regions near the top and bottom pass through without being controlled
Solution Approach 1:
Different portions of the discharge port are assigned different control functions. The upper horizontal blade specifically controls airflow in the upper regions of the discharge port, while the lower horizontal blade controls airflow in the lower regions. This local quality differentiation ensures that every region of the airflow is actively controlled rather than leaving gaps at the top and bottom
Solution Approach 2:
The discharge port control is segmented into upper and lower zones, each managed by its own horizontal blade. This segmentation ensures comprehensive coverage of the entire airflow cross-section, preventing uncontrolled airflow regions at the boundaries while maintaining structured control throughout
Data Source
AI summary
An air vent of a car includes a horizontal blade installed at a discharge port of a housing and including an upper horizontal blade and a lower horizontal blade, a link having one end coupled to a longitudinal end of the upper horizontal blade and the other end coupled to a longitudinal end of the lower horizontal blade, a plurality of vertical blades rotatably coupled to the housing and arranged at rear of the horizontal blade, an adjustment knob coupled to the upper horizontal blade so as to be movable in a horizontal direction, and a rotation bar coupled to the adjustment knob and connected to the vertical blades.