Vehicle Door Handle Grip Hold Mechanism for Re-Open Operability
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Solution Overview
Problem
Conventional door handle apparatuses for vehicles often result in low operability as the grip may retract before the user can re-open the door, requiring the user to manually pop up the grip again.
Innovation Solution
A door handle apparatus with a grip that is rotatable around a shaft, featuring a biasing device to return the grip to its normal state and a resistance force generation device to resist external forces causing the grip to rotate back, ensuring the grip remains in a pop-up state for a predetermined time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the grip is biased by a torsion spring to return to the normal state automatically, then the device complexity is reduced, but the operability deteriorates because the grip retracts before the user can re-open the door
Solution Approach 1:
The patent applies dynamics by making the grip's return behavior controllable rather than purely automatic. The grip can be configured to either automatically return to the normal state or remain in the popped-up state at the user's discretion, allowing the system to adapt its behavior dynamically based on user needs while maintaining a relatively simple mechanical structure with a torsion spring.
2Ease of operation
If the grip remains in the pop-up state for a predetermined time, then the ease of operation is improved, but the device complexity increases due to the resistance force generation device
Solution Approach 1:
The patent applies local quality by providing different functional characteristics to different parts of the grip mechanism. The resistance force generation device creates localized resistance at specific points in the grip's rotation path, allowing the grip to remain stable in the popped-up state for a predetermined time while maintaining overall structural simplicity through targeted rather than universal 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
This design enhances the practicality and usability of the door handle by allowing users to easily re-open the door without having to manually pop up the grip each time, improving the overall operational convenience.
Implementation Method 1
a grip that is allowed to be gripped from a vehicle exterior of the door panel, the grip being supported so as to be rotatable around a shaft extending in a predetermined direction, rotating in a first direction from a first state in which an outer surface of the grip is located in a same plane as an outer surface of the door panel to be transitionable to a second state in which the grip protrudes from the outer surface of the door panel, and rotating in a second direction opposite to the first direction from the second state to be transitionable to the first state; a biasing device that causes the grip to rotate in the second direction
Data Source
AI summary
A door handle apparatus for a vehicle includes: a grip that is allowed to be gripped from a vehicle exterior of the door panel, the grip being supported so as to be rotatable around a shaft extending in a predetermined direction, rotating in a first direction from a first state in which an outer surface of the grip is located in a same plane as an outer surface of the door panel to be transitionable to a second state in which the grip protrudes from the outer surface of the door panel, and rotating in a second direction opposite to the first direction from the second state to be transitionable to the first state; a biasing device that causes the grip to rotate in the second direction; and a resistance force generation device that generates a resistance force.