Motor Vehicle Side Window Asymmetry for Sealing
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Solution Overview
Problem
The existing motor vehicle side window arrangements experience tilting at the center of friction, leading to a compromised sealing effect against moisture and noise penetration during opening or closing movements.
Innovation Solution
The side window and seal are designed with the lower edge of the side window operatively connected to the window lifter, where the right-hand edge is closer to the seal base in the upper region than in the lower region, allowing the side window to be positioned away from the center of friction, enhancing sealing by compensating for tilting and ensuring proper alignment with the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the side window is positioned at the center of friction with a single-train window lifter, then the structure is simple and easy to manufacture, but tilting occurs during opening or closing movements compromising the sealing effect
Solution Approach 1:
The patent applies asymmetry by intentionally offsetting the window lifter from the center of friction position. The lower edge of the side window is connected to the window lifter at a position that is not centrally located, creating an asymmetric arrangement that compensates for tilting during movement. This asymmetric positioning allows the side window to maintain proper alignment with the seal throughout its travel, resolving the sealing problem while accepting increased structural complexity.
2Reliability
If the right-hand edge is positioned at equal distance from the seal base throughout its movement, then the manufacturing is simpler, but tilting occurs that compromises sealing performance
Solution Approach 1:
The patent applies local quality by creating a non-uniform distance relationship between the right-hand edge and the seal base. Specifically, the distance varies along the vertical extent of the side window, with the upper region having a different distance characteristic than the lower region. This localized variation in geometry compensates for tilting during movement and maintains sealing contact, resolving the contradiction between sealing reliability and manufacturing precision requirements.
Data Source
AI summary
A motor vehicle side window arrangement has a side window pane, which has a left edge, a right edge, a top edge connecting the left and right edges in the top region thereof and a bottom edge connecting the left and right edges in the bottom region thereof, which bottom edge is operatively connected to a window lever, and a seal. In the closed state of the side window pane, the seal has a left section adjacent to the left edge, a right section adjacent to the right edge, a top section adjacent to the top edge and a seal base. An improved sealing effect is obtained by the right edge adjacent to the right section of the seal having, in the top region thereof, a smaller distance from the seal base than in the bottom region thereof.