Retractable Vehicle Door Handle Vertical Link Mechanism
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Solution Overview
Problem
Conventional retractable outside door handle assemblies for vehicles face issues with increased weight, cost, and reduced exterior aesthetics due to the need for long link mechanisms to elongate the protruding length of the door handle for user convenience, which also affects the vehicle's running performance and noise levels.
Innovation Solution
A retractable outside door handle assembly with a vertically short, four-node link mechanism that allows for a longer stroke and improved design freedom, featuring a link mechanism with a front link, connecting link, rear link, and supporting link, along with an actuator and guide apertures, enabling the door handle to protrude linearly and retract smoothly, while maintaining a compact housing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the link mechanism is made long to elongate the protruding length of the outside door handle, then the operation convenience of the passenger is improved, but the weight and cost of the assembly are increased
Solution Approach 1:
The patent reconfigures the link mechanism from a conventional horizontal arrangement to a vertical arrangement, utilizing the height dimension within the door panel. The first link connects the actuator to the second link vertically, and the second link connects to the outside door handle, creating a compact vertical layout that achieves the required protruding length without increasing the horizontal footprint or link length, thereby reducing weight and cost.
2Ease of operation
If the link mechanism is made long to elongate the protruding length of the outside door handle, then the operation convenience of the passenger is improved, but the exterior aesthetics of the vehicle are deteriorated
Solution Approach 1:
By transitioning from a horizontal link mechanism to a vertical arrangement, the patent enables the outside door handle to protrude further while keeping the mechanism compact and concealed within the door panel housing. This vertical configuration allows the handle to achieve greater protruding length for improved ergonomics while maintaining a sleek, flush-mounted appearance that enhances exterior aesthetics.
3Ease of operation
If the link mechanism is made long to elongate the protruding length of the outside door handle, then the operation convenience of the passenger is improved, but the size of the handle housing must be increased
Solution Approach 1:
The patent utilizes the vertical space within the door panel by arranging the links in a vertical configuration rather than horizontally. The first link extends vertically from the actuator, and the second link connects vertically to the outside door handle, allowing the mechanism to fit within a compact housing volume while achieving the necessary protruding length for user convenience.
4Ease of operation
If the outside door handle protrudes outward along the width direction of the vehicle, then the operation convenience of the passenger is improved, but the running noise and running resistance are increased
Solution Approach 1:
The patent implements a retractable outside door handle mechanism that dynamically adjusts the protruding length of the handle based on operational requirements. The actuator controls the extension and retraction of the handle through the link mechanism, allowing the handle to protrude when needed for easy operation and retract to minimize aerodynamic resistance and running noise during vehicle operation, thus resolving the contradiction between operational convenience and harmful running factors.
Data Source
AI summary
A retractable outside door handle assembly for a vehicle is provided. The assembly includes an outside door handle that protrudes outward in a width direction of a vehicle or is receivable into an opening formed at a door outer panel. A front link has a first end portion connected to be rotatable with a front portion of the outside door handle along the length direction of the vehicle. A connecting link connected to be rotatable with a second end portion of the front link at a first end portion thereof and installed to be movable along the length direction of the vehicle. A rear link includes a first end portion connected to be rotatable with a second end portion of the connecting link and a second end portion is connected to be rotatable with the outside door handle.