Free Floating Paddle Handle With Segmented Drive Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Paddle-type door handles in vehicles often lead to component breakage when users mistakenly believe a locked handle is stuck and pull harder, as the handle does not visibly indicate its locked state.
Innovation Solution
A free-floating paddle handle assembly with a logic assembly comprising a drive plate, driven plate, and lock arm that operates independently when locked and in unison when unlocked, preventing the latch mechanism from opening when locked and allowing it to open when unlocked, and can be coupled with an interior handle assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the paddle handle is connected directly to the latch mechanism, then the handle can open the door, but the handle may break when users pull harder on a locked handle
Solution Approach 1:
The handle system is segmented into two independent plates: a drive plate connected to the paddle and a driven plate connected to the latch mechanism. These plates operate independently when locked, allowing the paddle to move freely without transmitting force to the latch, thus preventing breakage while maintaining normal operation when unlocked
Solution Approach 2:
A lock arm serves as an intermediary mechanism that controls the engagement between the drive plate and driven plate. When locked, the lock arm disengages the plates, allowing independent movement; when unlocked, it enables their connection, thereby mediating the force transmission from paddle to latch
2Ease of operation
If the paddle handle is disconnected from the latch mechanism, then the handle cannot open the door, but the handle can move freely when locked
Solution Approach 1:
The connection between the drive plate and driven plate is made dynamic rather than static. The lock arm enables the system to switch between two states: engaged (when unlocked) allowing door opening, and disengaged (when locked) allowing free movement. This dynamic adaptability resolves the contradiction between freedom of movement and door opening function
3Reliability
If a lock mechanism is added to prevent handle breakage, then the handle durability is improved, but the device complexity increases
Solution Approach 1:
The lock arm is merged with the existing locking system of the door, utilizing the same locking state to control both the door latch and the handle-to-latch connection. This integration allows the handle assembly to use the door's lock status without requiring a separate locking mechanism, thereby improving durability while minimizing additional complexity
Data Source
AI summary
A handle assembly is provided for a vehicle passenger door or compartment door and has a free floating paddle when the door or compartment is locked. The paddle is pivotally mounted on the exterior of the handle housing, while a logic assembly is mounted on the interior of the housing. The logic assembly includes a pivotal drive plate, a pivotal driven plate, and a pivotal lock arm. The drive plate is independent of the driven plate when the door is locked. The drive plate and driven plate moving in unison when the door is unlocked and the paddle is opened, thereby opening the latch mechanism for the vehicle compartment.