Bidirectional Push Pull Handle for Motor Vehicle Door
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Solution Overview
Problem
Conventional motor vehicle door handles require precise and detailed hand movements to unlock, making it inconvenient for users carrying items, especially in adverse weather conditions.
Innovation Solution
A push/pull handle operating system with a handle displaceable between latching and unlatching positions, a latch mechanism, and a mechanical connection feature, allowing the door to be unlatched by either pulling or pushing the handle, with an actuator to automatically open the door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional pull handle is used, then the door can be unlocked, but the user requires precise hand movements and must set down items to operate it
Solution Approach 1:
The patent applies inversion by allowing the handle to be operated in two opposite directions: pulling (conventional operation) and pushing (inverted operation). The push operation enables users to unlock the door while carrying items, eliminating the need to set items down. This bidirectional operation resolves the contradiction by providing multiple operation modes that adapt to different user situations.
Solution Approach 2:
The handle system is designed with dynamic characteristics, allowing it to be displaced in multiple directions (pulling and pushing) rather than being fixed in a single operation mode. The mechanical connection feature and latch mechanism accommodate bidirectional handle movement, making the system adaptable to different user needs and improving ease of operation without increasing complexity.
2Adaptability or versatility
If a user carries items in both hands, then accessibility is maintained, but the door cannot be opened without setting items down
Solution Approach 1:
When users are carrying items in both hands, the inverted push operation becomes the solution. Instead of requiring users to set items down to pull the handle, the system allows pushing the handle to unlock the door, maintaining adaptability to carrying conditions while preserving ease of operation.
Solution Approach 2:
The handle is designed with multi-functionality, serving both as a pull handle (conventional operation) and a push handle (inverted operation). This universal design allows the same component to adapt to different user situations, whether hands are free or carrying items, thereby improving both adaptability and ease of operation simultaneously.
3Reliability
If precise hand movements are required, then the latch can be engaged, but the operation becomes time-consuming and complicated
Solution Approach 1:
The dynamic handle design allows users to choose the most convenient operation direction (push or pull) based on their situation, reducing the time and complexity of door opening while maintaining reliable latch engagement through the mechanical connection feature and biasing elements.
Solution Approach 2:
The biasing elements automatically return the handle to the latching position after operation, and the mechanical connection feature automatically engages or disengages the latch based on handle displacement. This self-service mechanism reduces the precision and time required for manual operation while ensuring reliable latch engagement.
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 convenient and user-friendly operation of motor vehicle doors by allowing users to open them without setting down items, improving accessibility and reducing complexity in various conditions.
Implementation Method 1
a first biasing element biasing the handle toward the latching position
Implementation Method 2
a second biasing element biasing the mechanical cam toward the second position
Data Source
AI summary
An operating system for a motor vehicle door includes a handle that is displaceable between a latching position, a first unlatching position and a second unlatching position. The operating system also includes a latch mechanism including a latch and a cooperating receiver. The operating system further includes a mechanical connection feature connecting the handle to the latch whereby the motor vehicle door may be unlatched by displacing the handle.