Vehicle Door Handle Compression Mechanism for Ice Operation
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Solution Overview
Problem
Vehicle door handles become difficult to operate when ice forms on them due to freezing temperatures, making it hard for users to extend the handle and open the door.
Innovation Solution
A door handle assembly with a compression mechanism that includes a plunger and a biasing member, allowing the handle to rotate between resting, depressed, and extended positions, with a damper and plunger housing for secure engagement, enabling operation even when ice-covered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the door handle is made flush with the vehicle body surface, then the aesthetic appearance and integration are improved, but the handle becomes difficult to operate when ice forms on it
Solution Approach 1:
The door handle is designed with dynamic movement capability, allowing it to rotate between a first position (flush with body) and a second position (extended). The compression mechanism enables the handle to move to the extended position when ice forms, making it operable while maintaining the flush appearance during normal conditions.
Solution Approach 2:
The handle's position parameter is made variable through the compression mechanism. The handle can change its spatial position from flush to extended based on operational needs, allowing it to adapt to freezing conditions while maintaining aesthetic appearance during normal use.
2Ease of operation
If a compression mechanism is added to allow handle rotation, then the ease of operation in freezing conditions is improved, but the device complexity increases
Solution Approach 1:
The compression mechanism is designed to be actuated by the user's own action (pressing the handle). When the user presses the handle, the compression mechanism automatically allows the handle to rotate to the extended position without requiring additional actuators or complex control systems.
Solution Approach 2:
The compression mechanism acts as an intermediary between the user's input force and the handle rotation. It mediates the interaction by allowing controlled movement between positions while maintaining structural integrity and aesthetic appearance.
3Ease of operation
If the handle is extended to break ice, then the ease of operation is improved, but the handle is no longer flush with the vehicle body
Solution Approach 1:
The handle is designed with dynamic movement capability, allowing it to rotate between a first position (flush with body) and a second position (extended). The compression mechanism enables the handle to move to the extended position when ice forms, making it operable while maintaining the flush appearance during normal conditions.
Solution Approach 2:
The door handle system is segmented into multiple positional states (flush, extended, and intermediate positions). This segmentation allows the handle to adopt different configurations based on operational needs, separating the aesthetic function from the operational function.
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
Enables smooth operation of the door handle by allowing users to easily rotate the handle between positions, breaking ice and facilitating door opening even in freezing conditions.
Implementation Method 1
The biasing member may be coupled to one of the housing or the handle and configured to bias the plunger between the first position and the second position
Implementation Method 2
the compression mechanism further includes a damper secured to the plunger and configured to engage the handle
Data Source
AI summary
A door handle assembly for a vehicle includes a housing, a handle, and a compression mechanism. The handle is rotatably attached to the housing and rotatable between a resting position and a depressed position. The compression mechanism is configured to allow rotation of the handle between the resting position and the depressed position. The compression mechanism includes a plunger and a biasing member. The plunger is coupled to one of the housing or the handle and translatable between a first position when the handle is in the resting position and a second position when the handle is in the depressed position. The biasing member is coupled to one of the housing or the handle and configured to bias the plunger between the first position and the second position.