Vehicular Air Vent Switch Integrating HVAC Controls
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Solution Overview
Problem
Users of vehicular air conditioning systems face inconvenience and safety risks due to the need to manually operate separate switches for air conditioner ON/OFF, air flow rate, and air direction, which can divert attention from driving.
Innovation Solution
A switch device integrated into the air vent knob allows for air conditioner ON/OFF and air amount control, with a button switch and LED illumination, enabling single-location operation and eliminating the need for an air amount control dial, thereby enhancing user convenience and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate switches are provided for air conditioner ON/OFF, air flow rate control, and air direction control, then each function can be controlled independently, but the device complexity increases and user operation becomes inconvenient
Solution Approach 1:
The patent combines multiple control functions (air conditioner ON/OFF, air flow rate control, and air direction control) into a single integrated switch device located at the air vent. This merging of functions reduces the number of separate switches needed and simplifies the overall control system while maintaining independent control capability for each function through a unified interface.
Solution Approach 2:
The switch device is designed to perform multiple functions simultaneously - it can control air conditioner power state, adjust air flow rate, and modify air direction all through one multi-functional switch assembly. This universal control mechanism eliminates the need for separate dedicated switches for each function, thereby reducing device complexity while improving ease of operation.
2Reliability
If multiple separate controls are distributed across different locations (air conditioning control device and air vent), then each control can be optimized for its specific function, but the user must alternately manipulate multiple devices while driving, reducing safety
Solution Approach 1:
The patent merges the air conditioning control functions with the air vent control into a single integrated switch device located at the air vent. This consolidation allows the driver to control all air conditioning parameters (power, flow rate, direction) from one location, eliminating the need to alternately manipulate separate devices and thereby improving both safety and operational convenience.
3Area of stationary object
If an air amount control dial is provided separately, then precise air flow control is achieved, but the air vent size is reduced and design flexibility is limited
Solution Approach 1:
The patent integrates the air flow control function into the main switch device, eliminating the need for a separate air amount control dial. This integration frees up space within the air vent structure, allowing for larger vent openings that improve cooling and heating performance while maintaining precise air flow control through the integrated switch mechanism.
Solution Approach 2:
The patent extracts the air flow control function from a separate dedicated dial and incorporates it into the main switch device. This extraction removes the spatial constraint imposed by a separate control dial, enabling larger air vent dimensions while preserving the precision of air flow control through the integrated switching mechanism.
4Loss of time
If control switches are located away from the air vent, then the air vent design is simplified, but the user must reach across to operate controls, increasing operation time and potential distraction
Solution Approach 1:
The patent merges the control switches with the air vent structure, positioning them at the same location where the driver naturally interacts with the air vent for direction control. This integration eliminates the need for reaching across to separate controls, reducing operation time and minimizing distraction, while the modular design keeps the integration complexity manageable.
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 solution minimizes unnecessary operations while driving, increases the air vent size for improved cooling/heating performance, and provides clear switch location recognition at night through LED illumination, enhancing safety and design flexibility.
Implementation Method 1
A light-emitting diode (LED) is attached to an end of the circuit board and emits light through a light emission hole formed in the knob and at an end of a transverse wing.
Data Source
AI summary
A switch device for a vehicular air conditioning system includes a transverse wing surrounded by a knob of an air vent. A circuit board is mounted to an inner side of the transverse wing. The button switch for controlling an air conditioner and an air amount is connected to a switch contact portion of the circuit board to contact the switch contact portion of the circuit board and mounted to an upper surface of the knob. A connector connects a connecting portion formed at a rear portion of the circuit board and an air conditioning controller.