Vehicle Door Handle Damping via Segmented Balancing Arm
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Solution Overview
Problem
Existing door handle devices for motor vehicles face issues with reliable damping during closing movements, leading to potential operational decline due to environmental exposure and increased resistance during opening movements.
Innovation Solution
A door handle device with a pivotable balancing device coupled to the door handle via a coupling mechanism, utilizing air buffers with a large volume and a rotation reversal system to decouple damping from the door handle, preventing inadvertent opening during transverse acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a piston-cylinder device is arranged on the inner side for damping the closing movement, then damping during closing movement is achieved, but considerable resistance occurs during opening movement and structural outlay is large
Solution Approach 1:
The damping function is segmented from the door handle assembly and placed in a separate balancing device. The balancing device includes a balancing arm with a damping element (air buffer or spring) that is independent from the door handle mechanism, allowing damping to occur without affecting the opening movement of the door handle itself.
Solution Approach 2:
The balancing device acts as an intermediary between the door handle and the damping function. The coupling device connects the door handle to the balancing device, allowing the damping effect to be transmitted to the door handle during closing movement while the balancing arm independently manages the damping element without creating resistance during opening.
2Object-generated harmful factors
If the elastic air chamber is fit on the outer side of the vehicle for damping, then closing noise is reduced, but aging phenomena occur and operability diminishes over time due to environmental exposure
Solution Approach 1:
The balancing device serves as a protective intermediary between the door handle and the damping element. The damping element (air buffer or spring) is housed within the balancing device structure, which protects it from environmental exposure while still allowing it to perform the damping function. This separation prevents direct exposure of the damping element to external environmental factors.
3Reliability
If the door handle is directly coupled to the damping device, then damping is applied to the door handle, but inadvertent actuation or opening during transverse acceleration cannot be prevented
Solution Approach 1:
The coupling device segments the rotational movement of the door handle from the balancing device. The balancing arm is coupled to the door handle via the coupling device, which allows the balancing arm to pivot in opposition to the door handle. This segmentation ensures that the damping force is applied to the balancing arm rather than directly to the door handle, preventing inadvertent actuation during transverse acceleration while maintaining effective damping during normal closing movement.
Data Source
AI summary
A door handle device (1) for a motor vehicle has a holding device (2) with a door handle (6) arranged on an outer side (3) of the holding device (2) so as to be pivotable between a basic position (4) and a pivoted opening position (5). A damping device (7) is provided for damping a closing movement (8) of the door handle (6) from the pivoted opening position (5) into the basic position (4). A pivotable balancing device (10) for interaction with the damping device (7) is arranged on an inner side (9) of the holding device (2) and is coupled via a coupling device (11) to the door handle (6) so that a pivoting movement of the door handle (6) brings about an opposite rotational movement of the balancing device (10).