Sliding Door Carriage Decoupling for Low Threshold Access
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Solution Overview
Problem
Existing sliding windows and doors with pivotable support arms and carriages create a high threshold, obstructing barrier-free access, especially for individuals with disabilities.
Innovation Solution
Decoupling the carriage from the support arm and moving it to the inner floor area, with a flexible covering or sealing device to prevent contamination and maintain a low threshold height, allowing for a barrier-free and disabled-friendly design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the carriage is arranged at the level of the horizontally pivotable support arms, then the sliding window structure is stable and functional, but the threshold height becomes relatively high, preventing barrier-free access
Solution Approach 1:
The carriage is moved from a horizontal arrangement (at support arm level) to a vertical arrangement (below the support arm), utilizing the vertical dimension to resolve the contradiction. This dimensional shift allows the threshold to be lowered while maintaining the carriage's functional position through the running rail extending below the finished floor level
2Ease of operation
If the carriage is decoupled from the support arm and moved to the inner floor area, then barrier-free access is enabled with low threshold height, but open areas and contamination risks arise between the support arm and carriage
Solution Approach 1:
A flexible sealing element (brush strip) is introduced to cover the opening in the running rail, creating a flexible barrier that prevents contamination and closes open areas while allowing the carriage to move freely along the rail. This thin film approach resolves the contradiction by providing containment without restricting motion
Solution Approach 2:
The flexible sealing element acts as an intermediary between the support arm and carriage areas, mediating the potential contamination issue while allowing both components to function independently. The sealing element bridges the gap created by decoupling the carriage from the support arm
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a sliding window or sliding door with a frame (1) and a sash (2) slidably arranged on the frame (1) via a sliding fitting, wherein the sliding fitting comprises a guide rail (4) arranged on the underside of the frame (1) and guide rails (3) attached to the underside of the sash (2), the guide rail having a carriage (5) arranged on a pivotable support arm (10) and slidably guided on a guide (7) of the track (4). The carriage (5) is arranged below the pivotable support arm (10), and a cover or sealing device (19) is provided between the support arm (10) and the carriage (5).