Vehicle Door Handle Linkage With Restriction Wall for Collision Reliability
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Solution Overview
Problem
Existing vehicle handle devices are prone to inadvertent door lock release due to independent operation of the latch release lever during collisions, compromising collision reliability.
Innovation Solution
The handle device incorporates a push portion forming member with a restriction wall that prevents independent rotation of the latch release lever by connecting it to the handle body, ensuring that the latch release lever operates only when manually activated, and includes an inertia stopper to prevent unauthorized door opening during collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the latch release lever is allowed to rotate independently from the handle lever, then the door can be opened more easily, but the reliability against collision impact is reduced due to inadvertent door lock release
Solution Approach 1:
The patent merges the operation of the latch release lever with the handle lever by introducing a push portion forming member that connects both components. This ensures that the latch release lever can only rotate when the handle lever is manually operated, preventing independent rotation during collisions while maintaining ease of door opening through the manual operation mechanism.
Solution Approach 2:
The push portion forming member acts as an intermediary between the handle lever and the latch release lever. It transmits the manual operation force from the handle lever to the latch release lever, ensuring that the latch release lever only operates when intentionally activated by the user through handle lever movement, not during collision impacts.
2Reliability
If the latch release lever is connected to the handle body, then collision reliability is improved, but the device complexity increases
Solution Approach 1:
The push portion forming member serves multiple functions: it connects the handle lever to the latch release lever, transmits operational force, and prevents independent rotation of the latch release lever during collisions. By making this single component perform multiple functions, the patent reduces overall device complexity while maintaining improved collision reliability.
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 configuration effectively prevents inadvertent door lock releases during impacts, enhancing collision reliability by ensuring the latch release lever only operates in response to manual handling and not due to inertia forces, thus maintaining secure door closure.
Implementation Method 1
the handle body 2 is configured to be driven from an initial position to a pop-up position by the electric actuator 1
Implementation Method 2
The restriction wall 7 prevents, when the push portion forming member is located at a position between the initial corresponding position and a pop-up corresponding position corresponding to the pop-up position of the handle body, the latch release lever 3 from rotating toward the latch release position
Implementation Method 3
The push portion forming member 5 has a lever push portion 6 configured to, when the push portion forming member is located at the latch operation corresponding position, push and rotate the latch release lever 3 to the latch release position
Data Source
AI summary
A handle device for a vehicle includes a handle body, a latch release lever, a door latch device, an electric actuator and a push portion forming member. The handle body moves between an initial position, a pop-up position and to a latch operation position. The door latch device is released by the latch release lever rotating to a latch release position. The push portion forming member moves from an initial corresponding position to a latch operation corresponding position and has a lever push portion to, when the push portion forming member is at the latch operation corresponding position, rotate the latch release lever to the latch release position. The push portion forming member has a restriction wall to prevent, when the push portion forming member is between the initial corresponding position and a pop-up corresponding position, the latch release lever from rotating toward the latch release position.