Vehicle Door Window Composite Part Connection
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Solution Overview
Problem
Existing vehicle door window arrangements suffer from moisture penetration and corrosion due to screw connections between the composite part and the upper window frame, leading to leaks and corrosion risks.
Innovation Solution
A slot opening in the upper window frame part with an undercut guide allows a connecting element with a head part to be inserted, preventing external contact and enabling a detachable, corrosion-resistant connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a screw connection element is used to attach the composite part to the upper window frame part, then the composite part can be securely fastened, but moisture penetrates through the screw connection causing leaks and corrosion
Solution Approach 1:
The invention extracts the harmful screw connection element from the system and replaces it with a slot-based connecting element that engages with an undercut guide. This removes the penetration path for moisture while maintaining the secure attachment function through the slot and undercut mechanism.
Solution Approach 2:
The slot opening acts as an intermediary structure between the composite part and the upper window frame part. Instead of direct screw penetration, the connecting element mediates the connection through the slot, engaging with the undercut guide to provide secure attachment without creating moisture penetration paths.
2Ease of operation
If a through-opening is used for the screw connection, then the connecting element can pass through for assembly, but the opening exposes the connecting element to the outside environment causing corrosion
Solution Approach 1:
The invention changes the dimensional configuration of the opening from a simple through-hole to a slot opening with specific orientation. The slot is arranged such that its open end faces the inside of the vehicle, creating a protective geometry that allows assembly while shielding the connecting element from external environmental factors.
Solution Approach 2:
Instead of having the open end of the slot face outward for easy access, the invention inverts the orientation so that the open end faces the inside of the vehicle. This protects the connecting element from external corrosion while still allowing assembly from the outside through the slot structure.
3Strength
If a fixed screw connection is used, then the composite part is securely attached, but the connecting element cannot be replaced for repairs
Solution Approach 1:
The invention transforms the static, permanent screw connection into a dynamic, reversible connection. The connecting element can be inserted through the slot, engaged with the undercut guide for secure attachment during operation, and then easily removed when repair or replacement is needed, providing both security and maintainability.
Data Source
Figure 1~3
Figure 4~7
AI summary
The invention relates to a system consisting of window frame parts (2-5) of the vehicle door window and a composite part (6), the composite part (6) is entirely assembled to the window frame part when the sealing is formed, the composite part (6) includes a separator plate (11) extending from the top window frame part (2) to the bottom window frame part (4) and arranged between the glass pieces (10, 32) of the door window. According to the invention, the composite part (6) and the top window frame part (2) have a device for establishing the connection between the composite part (6) and the top window frame part (2) through a connection element (20) at the upper end of the separator plate (11), wherein the connection element (20) is not contact with the outside environment of the vehicle when the vehicle door is closed. The invention further relates to a composite part (6).