Vehicle Door Handle System with Touch Sensing and Dynamic Deployment
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Solution Overview
Problem
Conventional vehicle handles protrude from the vehicle body, leading to collisions and increased wind resistance, and existing hidden type handle systems lack flexibility and convenience in operation.
Innovation Solution
A hidden type handle system for vehicles equipped with a touch sensing device and controller that allows the handle to deploy and retract based on touch sensing signals, enabling convenient operation and control, including locking and unlocking the vehicle door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle protrudes from the vehicle body surface, then the handle is easier to operate and grip, but the handle is more likely to collide with objects and experience increased wind resistance
Solution Approach 1:
The handle body is designed to be movable between a deployed position (protruding from the vehicle body surface) and a retracted position (flush with the vehicle body surface). The controller activates the driving device to move the handle body between these positions based on operational requirements, allowing the handle to adapt its state dynamically rather than being fixed in one position
Solution Approach 2:
The position parameter of the handle body is changed between deployed and retracted states. When the handle is not in use, it is retracted to minimize collision risk and wind resistance. When operation is needed, it is deployed to provide adequate grip space, thus changing the spatial parameter of the handle body to resolve the contradiction
2Ease of operation
If the handle is always deployed, then the handle is always accessible for operation, but the vehicle body surface is not flat and wind resistance increases
Solution Approach 1:
The handle body transitions from a static always-deployed state to a dynamic state where it can be retracted when not in use. The driving device enables the handle body to move between deployed and retracted positions, allowing the system to optimize between accessibility and aerodynamic efficiency based on real-time operational needs
Solution Approach 2:
The handle body alternates between deployed and retracted positions based on periodic operational requirements. It is deployed when opening the door is needed and retracted when not in use, creating a periodic action pattern that balances accessibility with reduced wind resistance during normal vehicle operation
3Loss of energy
If the handle is always retracted, then wind resistance is reduced and the vehicle body surface remains flat, but the handle is not accessible for operation
Solution Approach 1:
The handle system employs a driving device that enables the handle body to move between retracted and deployed positions. When door opening operation is detected or requested, the controller activates the driving device to deploy the handle body, ensuring accessibility is restored temporarily when needed while maintaining the aerodynamic benefits of the retracted state during normal operation
4Ease of operation
If a touch sensing device is added to enable touch-based operation, then the operation convenience is improved, but the device complexity increases
Solution Approach 1:
The traditional mechanical switch or button on the handle is replaced with a touch sensing device that detects touch actions through electrical field changes. This substitution eliminates the need for mechanical contact components, reducing mechanical complexity while enabling more convenient touch-based operation where users can simply touch the handle surface to trigger deployment
Solution Approach 2:
The touch sensing device acts as an intermediary between the user's touch action and the handle deployment control. It detects touch signals and converts them into electrical signals that the controller can process, providing a bridge that enables convenient operation while isolating the mechanical handle system from direct user interaction complexity
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 system provides a more durable and convenient operation method with reduced risk of collision and wind resistance, while ensuring precise control and user-friendly interaction.
Implementation Method 1
The capacitive sensor is capable of generating a change in capacitance in response to a touch on the handle body
Data Source
AI summary
A handle system for a vehicle and a control method for the handle system includes a handle body, a touch sensing device and a controller. The touch sensing device includes one or more sensing circuits. The handle body is arranged on a vehicle door, and the touch sensing device is arranged in or on the handle body and is capable of generating a corresponding sensing signal in response to a touch on the handle body. The controller is capable of generating a corresponding control signal according to the sensing signal, and controlling, according to the control signal, a handle driving device. The handle driving device drives the deploying or retracting of the handle body, and performs activation, locking and other control operations on a vehicle.