Vehicle Door Handle Rotating Switch Cover for Aerodynamic Assembly
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Solution Overview
Problem
Conventional door handle apparatuses for vehicles face challenges in maintaining aerodynamic characteristics and high assembly accuracy due to the need for precise attachment of switch elements and covers, which can lead to errors and incorrect locking states.
Innovation Solution
A door handle apparatus with a base-supported grip and switch device, where the grip and switch cover are rotatable around dedicated shafts, ensuring they remain in the same plane until activated, and the switch cover is designed to prevent erroneous locking by positioning the switch cover's shaft at the end, near the grip's boundary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the switch element and switch cover are attached with high precision to maintain the same plane as the grip, then the aerodynamic characteristic is improved, but the assemblability decreases
Solution Approach 1:
The switch device is segmented into a switch body and a switch cover that can rotate independently around a second shaft. This segmentation allows the switch cover to be positioned at the same plane as the grip for aerodynamic purposes, while the rotational mechanism simplifies assembly by allowing the switch cover to be attached first, then rotated into position without requiring high precision alignment with the switch element.
Solution Approach 2:
The switch cover is designed to be rotatable around the second shaft, transforming from a static component requiring precise alignment to a dynamic component that can move into position. This rotational freedom allows the switch cover to achieve the same-plane position with the grip for aerodynamic characteristics while simplifying the assembly process, as the switch cover can be rotated into place without requiring high precision attachment.
2Ease of operation
If the switch cover is positioned adjacent to the grip, then the operational function is improved, but the risk of erroneous locking increases
Solution Approach 1:
The second shaft is positioned asymmetrically at the end portion of the switch cover near the grip's boundary, rather than at the center. This asymmetric positioning creates a mechanical constraint where the switch cover's rotation range is limited, preventing it from moving far enough to erroneously activate the switch element. The asymmetry in shaft positioning thus provides a passive safety mechanism against incorrect locking while maintaining operational functionality.
Solution Approach 2:
The second shaft acts as an intermediary mechanical element between the switch cover and the switch body. By positioning the shaft at the end portion near the grip boundary, it mediates the interaction between the switch cover and switch element, allowing the switch cover to be positioned for ease of operation while physically preventing erroneous activation through the mechanical constraint of the shaft's location.
Data Source
AI summary
A door handle apparatus for a vehicle is assembled to a door panel of the vehicle. The door handle apparatus includes a base, a grip, and a switch device. The grip is supported by the base, rotates from a state in which an outer surface of the grip is located in a same plane as an outer surface of the door panel, and is transitionable to a state of protruding from the outer surface of the door panel. The switch device includes a switch body and a switch cover. The switch cover is supported by the base, rotates around the second shaft, enters an inner surface of the door panel, and engages with the switch body to switch ON and OFF states of a switch element.