Liftable Sliding Leaf Guide With Dual Movable Bars
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Solution Overview
Problem
Conventional sliding door or window guides mounted on the ground pose tripping hazards and require frequent maintenance, while guides mounted on the top lack a solution for fixing the sliding leaf in position, affecting safety, usability, and sealing performance.
Innovation Solution
A guide system for liftable sliding leaves with two movable bars, one connected to a fixed support and the other to the leaf, allowing the leaf to rest on the ground when closed, enabling secure sliding on a track formed by the second bar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the guide is mounted on the ground, then the sliding leaf can rest on the ground for stable positioning and sealing, but it creates tripping hazards and requires frequent maintenance due to dirt accumulation
Solution Approach 1:
The guide is relocated from the horizontal ground plane to the vertical top edge of the door frame, changing the spatial dimension of guide placement. This elevation eliminates the tripping hazard while maintaining the leaf's ability to rest on the ground through the ground engagement feature
2Ease of manufacture
If the guide is mounted on the top part of the door, then assembly is simpler and drainage is improved, but the sliding leaf cannot be fixed in position during lateral sliding
Solution Approach 1:
The guide is divided into two separate bars with distinct functions: the first bar provides lateral guidance for smooth sliding, while the second bar engages the ground to provide vertical support and positional stability. This segmentation allows each component to optimize its specific function
Solution Approach 2:
Different parts of the guide system have different properties: the first bar is designed for lateral movement guidance, while the second bar is designed for vertical ground engagement. The sliding leaf also has differentiated features including a top guide engagement feature and a ground engagement feature, with each part optimized for its local function
3Ease of manufacture
If the guide is mounted on the top part of the door, then water drainage is improved, but the seals cannot be compressed by the leaf resting on the ground
Solution Approach 1:
The guide system is segmented into two bars: the first bar mounted on the top edge provides drainage capability by preventing water accumulation, while the second bar enables ground engagement to compress the seals. This segmentation allows both drainage and sealing functions to coexist
4Device complexity
If the guide is mounted on the top part of the door, then the structure is simpler, but the stresses on the guiding parts increase due to continuous suspension of the leaf
Solution Approach 1:
The guide system transitions from a static top-mounted configuration to a dynamic two-bar system where the second bar can engage the ground to support the leaf weight. This dynamic ground engagement reduces stress on the guiding parts during the closed position while maintaining structural simplicity
Data Source
AI summary
A guide (10) for a liftable sliding leaf comprises at least two guide bars (14, 16), a first bar (14) of which can be connected movably to a support (24), fixed with respect to the leaf, and a second bar (16) can be connected integrally to a top part (12) of the leaf (11) so that both the bars (14, 16) are movable in a vertical plane.