Vehicular Window Regulator Inclination Restraining Mechanism
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Solution Overview
Problem
Vehicular window regulators with a single-point support mechanism cause glass inclination issues, leading to abnormal noise and increased driving force requirements due to the glass tilting during lowering and raising, as it is supported at a single point based on its center of gravity.
Innovation Solution
A vehicular window regulator with an inclination restraining mechanism that includes a member secured to the glass and traction member guides disposed at the door panel, with a traction member wound across these guides, having one end installed from above and the other from below, offset in a horizontal direction to apply tension and restrain glass inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the glass is supported at a single point by the slider, then the structure is simple, but the glass inclines toward forward or rear direction causing abnormal noise and increased driving force
Solution Approach 1:
The support function is segmented from a single-point support to multi-point support. The glass is supported at multiple locations: the slider provides support at the center of gravity, while the inclination restraining mechanism provides additional support points through the traction member wound around pulleys, preventing inclination and distributing the load across multiple contact points with the door sash.
2Device complexity
If the glass is supported at a single point, then the mechanism is simple, but the driving force required increases due to glass inclination
Solution Approach 1:
The inclination restraining mechanism acts as an intermediary system between the glass and the door sash. It includes a traction member wound around pulleys that are disposed above and below the glass, providing counterbalancing forces to prevent inclination and reduce the driving force required for window operation.
3Ease of manufacture
If the glass is supported at a single point, then the installation is simple, but the glass scratches the door sash during lowering and rising
Solution Approach 1:
The support system is extended from a single vertical dimension to multiple dimensions. The inclination restraining mechanism adds horizontal dimension control by using pulleys disposed above and below the glass with a traction member that prevents lateral movement, keeping the glass centered and preventing scratching during vertical movement.
Data Source
AI summary
A vehicular window regulator that decreases an inclination of a glass centering on a thickness direction of the glass and an inclination restraining mechanism are provided. The window regulator includes a member secured to a glass, traction member guides. At least one of the traction member guides are each disposed above and below the member, across the member. The inclination restraining mechanism is wound across the respective traction member guides, and includes a traction member having one end portion installed at the member from above, and further having another end portion installed at the member from below. An installation position to the member, of the one end portion of the traction member and an installation position to the member, of the other end portion of the traction member are offset in a horizontal direction, viewing from a thickness direction of the glass.