Vehicle Door Sash Structure for Flush Window Integration
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Solution Overview
Problem
The existing door sash structures for vehicle doors with window glass elevating/lowering mechanisms face challenges in compact design and aesthetic limitations due to the large cross-sectional shape of gear-side guide frames, making it difficult to apply these configurations to vehicles with flush window and door surfaces.
Innovation Solution
A vehicle door sash structure featuring an upright pillar sash with a design part on the exterior and a main body on the interior, incorporating a slider, guide rail, and transmission member to house the elevating/lowering mechanism, allowing for compact integration and flexible design options by using a bursiform cross-section and a frame part that can be partially open on both sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gear-side guide frame with large cross-sectional shape is used to regulate movement of the window in vehicle interior and exterior directions, then the movement regulation function is achieved, but the door sash size is enlarged
Solution Approach 1:
The guide frame is divided into two separate components: a guide rail attached to the door sash and a guide shoe attached to the window. This segmentation allows the guide rail to have a compact cross-sectional shape while still achieving effective movement regulation through the interaction between the guide rail and guide shoe.
Solution Approach 2:
The guiding function is transferred from the cross-sectional dimension (vehicle interior/exterior directions) to the longitudinal dimension (elevating/lowering direction). The guide rail extends in the elevating/lowering direction and provides guiding through its length rather than requiring a large cross-section, thus reducing the door sash size in the vehicle interior/exterior directions.
2Reliability
If the gear-side guide frame is located on the vehicle exterior side with respect to the window, then the movement regulation is achieved, but the application to flush window and door surface designs is limited
Solution Approach 1:
Instead of having the guide frame on the vehicle exterior side, the guide rail is positioned on the vehicle interior side of the window. This inversion allows the window outer surface to be substantially flush with the door sash outer surface, achieving the desired aesthetic appearance while maintaining movement regulation functionality through the guide shoe-rail interaction.
Data Source
AI summary
A vehicle door including: an upright pillar sash extending in elevating/lowering directions of the window glass along one of front and rear edges of window glass; and an elevating/lowering mechanism that operates elevating/lowering movement of the window glass by a driving force of a drive source. The upright pillar sash includes: a design part on a vehicle exterior side; and a main body on vehicle interior side relative to the design part, the elevating/lowering mechanism includes: a slider secured to the glass; a guide rail that guides the slider to move in the elevating/lowering directions; and a transmission member that transmits the driving force from the drive source to the slider, the main body of the upright pillar sash houses the slider, guide rail, and transmission member, and the guide rail regulates movement of the slider in both vehicle interior/exterior directions, on a vehicle interior surface side of the glass.