Sliding Door Roller Carriage With Segmented Load Distribution
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Solution Overview
Problem
Existing carriage arrangements for doors and windows struggle to provide reliable and cost-effective support for heavy and bulky sashes, especially with multiple glazing, as they require complex structures and high material usage.
Innovation Solution
A carriage arrangement featuring a one-piece carriage housing with three rollers arranged equidistantly on a rail, supported by deployment arms that transfer the sash load into the rollers, along with a coupling system and dampers for smooth movement, allowing for efficient load distribution and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional carriage arrangements are used to support heavy sashes with multiple glazing, then the sash can be moved, but the structure becomes complex and material usage increases
Solution Approach 1:
The carriage assembly is divided into multiple independent carriages (first carriage, second carriage, third carriage) that can function separately but work together to support the sash. Each carriage has its own rollers and can be independently positioned along the guide rail, allowing the system to handle heavy loads through distributed support rather than a single complex structure.
Solution Approach 2:
Multiple carriages are combined to work together as a unified support system. The carriages can be connected to each other and to the sash simultaneously, merging their individual load-bearing capabilities into a collective system that reliably supports heavy sashes with multiple glazing panes without requiring each individual component to be overly complex.
2Strength
If traditional carriage arrangements are used for heavy sashes, then the sash can be supported, but material usage and manufacturing costs increase
Solution Approach 1:
The load-bearing function is segmented across multiple carriages rather than concentrated in one large, material-intensive structure. Each carriage uses minimal material to provide its share of the support capacity, and the collective effect of multiple carriages achieves the required total load-bearing capacity for heavy sashes with multiple glazing panes.
Solution Approach 2:
The system changes the parameter of load distribution by using multiple carriages with fewer rollers each (one or two rollers per carriage) rather than one carriage with many rollers. This parameter change in the distribution pattern reduces the total material quantity needed while maintaining or improving the overall load-bearing capacity.
3Force
If more rollers are used on each carriage to support heavy loads, then load capacity increases, but the carriage complexity and material usage increase
Solution Approach 1:
The total load capacity requirement is segmented across multiple carriages, allowing each carriage to have fewer rollers (one or two) while the collective system provides the necessary total support. This segmentation avoids the complexity of designing and manufacturing each individual carriage with multiple rollers.
Solution Approach 2:
Each carriage provides partial load-bearing action with just one or two rollers, which is sufficient when combined with other carriages. The system uses partial action from multiple carriages rather than requiring excessive action (many rollers) from a single carriage, thereby reducing component count and complexity.
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
This solution enables reliable support for heavy sashes with minimal material usage, ensuring smooth and precise movement while maintaining structural simplicity and low costs.
Implementation Method 1
A first roller and a second roller are arranged on the carriage housing. The fixed frame can have a guide rail on which the first roller and the second roller can be supported.
Implementation Method 2
The load of the sash is transferred via the extension arms into the carriage housing and then into the rollers.
Data Source
Figure 1
Figure 2a~2b
Figure 2c
AI summary
The invention relates to a roller carriage array (22) for a window or a door in the form of a sliding window or sliding door. One sash or leaf of the window or door can be moved out from a fixed frame by the roller carriage array (22) and can be slid parallel to the main plane of the fixed frame. The roller carriage array (22) has a first roller carriage (26) comprising at least three rollers (32a - c) in a roller carriage housing (38). Alternatively or additionally thereto, the first roller carriage (26) has at least two hinging arms on the roller carriage housing (38).