Vehicle Door Coupling Shaft for Fast Aligned Panel Assembly
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Solution Overview
Problem
The existing vehicle door coupling process is inconvenient and time-consuming due to the need for separate support pins and bolts, which are difficult to correctly insert into narrow spaces, leading to increased assembly time and potential misalignment.
Innovation Solution
A vehicle door coupling device featuring a shaft with a stopper and crossbar that allows for temporary coupling and secure fixation of a modular panel to a door inner panel, utilizing a position maintaining structure with vertical and horizontal grooves to prevent rotation and ensure correct alignment, and an anti-loosening structure to maintain the coupling, while a sealing material ensures airtightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If support pins and bolts are used separately for temporary fixation and fastening, then the coupling can be performed in stages, but the assembly time increases and the process becomes more complex
Solution Approach 1:
The patent combines the support pin and bolt into a single integrated coupling device. The coupling device includes a support portion that provides temporary fixation and a fastening portion that secures the modular panel, both functions merged into one component that can be installed in a single operation rather than requiring separate support pins and bolts
Solution Approach 2:
The coupling device serves multiple functions simultaneously: it acts as both a support element for temporary fixation and a fastening element for permanent attachment. The integrated structure allows the same component to perform both the alignment and securing functions that previously required separate parts
2Ease of manufacture
If support pins and bolts are directly inserted into holes at the assembly site, then the coupling can be performed in place, but the narrow workspace makes correct insertion difficult and increases work time
Solution Approach 1:
The coupling device is pre-assembled as an integrated unit before the actual panel coupling operation. The support portion and fastening portion are already connected, so during assembly, the entire coupled device is installed in one action rather than requiring separate insertion and assembly steps in the narrow workspace
3Reliability
If separate support pins and bolts are used, then temporary fixation and permanent fastening can be distinguished, but the device complexity increases
Solution Approach 1:
The patent merges the support pin and bolt into a single integrated coupling device with distinct functional portions. The support portion provides temporary fixation while the fastening portion provides permanent attachment, but both functions are contained within one unified component rather than requiring separate parts
Data Source
AI summary
The present disclosure relates to a vehicle door coupling device, and more specifically, to a vehicle door coupling device for mechanically coupling together a first member having a first hole and a second member having a second hole at a position corresponding to the first hole. The vehicle door coupling device includes: a stopper configured to support the first member; and a shaft including a crossbar configured to support the second member and couple the second member to the first member when the shaft is rotated to a final coupling position, and a hook portion configured to cause the shaft to be caught on the first member in a temporary coupling position, the shaft being connected to support the stopper and the crossbar, wherein the shaft is shaped such that the shaft is inserted into the first hole of the first member and the second hole of the second member and rotatably passes therethrough, and an material for airtight is provided on the shaft to maintain airtightness between the shaft and the first hole of the first member in the final coupling position.