Motor Vehicle Door Holding Device with Separated Abutment
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Solution Overview
Problem
Existing devices for holding motor vehicle doors in an ajar position during manufacturing suffer from paint accumulation and friction issues, leading to aesthetic degradation and corrosion risks.
Innovation Solution
A device with a separate abutment member that extends from the door, allowing space for painting and minimizing contact with the door, combined with a protection member that covers sharp edges to prevent grain deposition, ensuring the door can be held in a stable ajar position without compromising aesthetics or durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the abutment member is integrated with the fixing means and rests on the door edge, then the door can be held in the ajar position, but paint accumulates on the abutment member and drips onto the door, degrading aesthetics
Solution Approach 1:
The device is divided into separate functional components: the abutment member (30) is separated from the fixing means (10), allowing the abutment member to be positioned away from the door while still providing effective door holding through the arcuate arm (26). This segmentation prevents paint accumulation on contact surfaces.
Solution Approach 2:
The arcuate arm (26) acts as an intermediary element between the abutment member (30) and the door. It transmits the retaining force while maintaining a distance that prevents direct contact between the abutment member and the door, thereby eliminating the paint accumulation problem.
2Stability of the object's composition
If the abutment member is positioned close to the door for effective retention, then the door can be held stable, but the abutment member contacts the door during treatment operations, causing grain deposition and aesthetic degradation
Solution Approach 1:
The abutment member (30) is separated from the fixing means (10) and positioned at a distance, allowing the arcuate arm (26) to provide retention stability without direct contact between the abutment member and door, thus preventing grain deposition.
3Ease of manufacture
If the attachment zone is positioned on the door edge for easy fixing, then the device can be easily assembled, but the attachment zone is exposed to corrosion during treatment operations
Solution Approach 1:
The attachment zone is repositioned from the door edge to the inside of the door (arranged inside the vehicle). This spatial relocation places the attachment zone in a protected environment where seals prevent fluid exposure, thereby eliminating corrosion risk while maintaining assembly ease through the locking member mechanism.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention concerns a device (2) for holding a motor vehicle door in an ajar position during the manufacture of said vehicle, comprising: -a body (8); -fastening means (10) designed to fasten the body (8) to the door (4), preferably to a fastening area intended to accommodate a lock; -a retaining member (26) mounted on the body (8) and arranged to bear on a first side of the car body member (6) and hold the door in an ajar position; and -a stop member (30) mounted on the body (8) and arranged to extend away from the door in such a way as to define a space between the stop member (30) and the door, the stop member (30) being arranged to bear on a second side of the car body member (6) and prevent the door from closing (4).