Width-Adjustable Sliding Door Guide With Wedge Mechanism
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Solution Overview
Problem
Existing guides for sliding doors fail to provide a precise and adjustable solution for accommodating varying door milling widths, leading to oscillation and wear issues due to limited adjustment capabilities and uneven friction distribution.
Innovation Solution
A width-adjustable guide featuring a rectangular base with slotted holes, a U-shaped moulded structure, and a turret with a threaded hole, allowing for the insertion of a dowel to adjust a wedge-shaped element that expands the guide's width evenly along its entire height, ensuring precise interference with the door milling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rigid guide with fixed width is used, then the guide structure is simple and cost-effective, but it cannot adapt to varying door milling widths leading to oscillation and clearance issues
Solution Approach 1:
The guide incorporates a wedge-shaped element that can be adjusted in position along the longitudinal axis, transforming a static fixed-width guide into a dynamic adjustable-width guide. This allows the guide to adapt to different door milling widths while maintaining structural simplicity through the use of a single movable component rather than complex mechanical systems
Solution Approach 2:
The invention changes the width parameter of the guide by moving the wedge-shaped element to different positions. The wedge element's triangular cross-section allows it to expand or reduce the effective width of the guide body when moved between the limiting walls, enabling continuous adjustment of the guide width to match various door milling dimensions
2Reliability
If a dowel is placed between two walls to adjust width, then some adaptability is achieved, but adjustment is limited to localized points causing wear and repeated clearance
Solution Approach 1:
Instead of adjusting width at a single point (one-dimensional adjustment), the invention uses a wedge-shaped element with a triangular cross-section that distributes the adjustment across the entire height of the guide (three-dimensional solution). This ensures uniform contact along the full height of the door milling, preventing localized wear and maintaining consistent friction throughout the sliding operation
Solution Approach 2:
The guide body is segmented into a fixed portion and a movable wedge-shaped element. This segmentation allows the wedge to be independently positioned and adjusted along the longitudinal axis, enabling precise control of the guide width while maintaining structural integrity. The wedge acts as a separate adjustable component that can be repositioned without affecting the overall guide structure
3Reliability
If the guide width is too narrow, then oscillation is reduced, but the door has difficulty sliding due to excessive friction
Solution Approach 1:
The adjustable width capability allows the guide to dynamically adapt to the specific door milling dimensions. By optimizing the guide width to match the actual milling width, the system achieves the right balance between preventing oscillation (through sufficient contact) and ensuring smooth sliding (through appropriate clearance), eliminating the need to choose between excessive friction and excessive oscillation
Solution Approach 2:
The wedge-shaped element provides localized adjustment capability at different positions along the longitudinal axis. This allows the guide to apply the appropriate amount of friction or clearance in specific zones, ensuring optimal contact conditions along the entire height of the door while maintaining smooth sliding operation
4Ease of operation
If the guide width is too wide, then sliding is easy, but excessive clearance causes door oscillation
Solution Approach 1:
The adjustable width mechanism allows the guide to dynamically optimize the balance between sliding ease and oscillation control. By adjusting the wedge position, the guide can provide sufficient width for smooth sliding while maintaining adequate contact to prevent excessive clearance and oscillation, adapting to the specific requirements of each door installation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables precise adjustment of the guide to fit various door milling widths, reducing oscillation and wear by distributing friction evenly across the entire height, enhancing reliability and adaptability while maintaining cost-effectiveness.
Implementation Method 1
a dowel is placed which acts as a wedge screwing into a conical hole
Implementation Method 2
a turret extends vertically... The turret is provided with a threaded through hole
Implementation Method 3
the friction exercised by the door on points of the guide walls may over time determine the localised wear of the walls themselves
Data Source
Figure 1~3
Figure 4~7
AI summary
An adjustable guide (10) to attach to the floor for hanging sliding doors, made from any suitable material, comprises a rectangular base (12) with slotted holes (14) for attachment means to the floor, on said base (12) a through aperture (16) is formed delimited in part by an integral moulded structure (18) extending vertically with a substantially U-shaped cross- section on its side, defining opposite faces (19-19') and, on a side facing one of said holes (14), an access mouth (18') to a cavity (21) in which a wedge-shaped element (26) is pushed which expands said faces (19-19') progressively outwards.