Sliding Door Rolling Device with Articulated Units
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rolling devices for sliding joinery, such as doors and windows, are limited to two rollers per carriage due to the 'railway wagon bogie principle,' leading to potential blocking situations and difficult adjustments when dealing with non-parallel openings, and lack flexibility in supporting different dimensions and weights.
Innovation Solution
A rolling device with at least two interconnected rolling units, where one unit is coupled to another to form a mechanical connection allowing tilting, enabling the carriage to adapt to various dimensions and weights, and featuring adjustable elements for precise alignment and height adjustment, including arched surfaces and multiple sections for enhanced support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional rolling devices use the railway wagon bogie principle with two rollers per carriage, then the structure is simple, but the adaptability to different dimensions and weights is limited and blocking situations occur
Solution Approach 1:
The rolling device is divided into multiple independent rolling units (at least two) that can be coupled together. Each rolling unit contains a roller that can independently support load, allowing the system to adapt to different weight and dimension requirements by adding or removing units, while maintaining relative structural simplicity through modular design
Solution Approach 2:
The coupling mechanism between rolling units provides multi-functionality: it allows mechanical connection for load support, enables tilting motion for angular adaptation to opening rail inclination, and permits relative movement for adjustment. This universal coupling design eliminates the need for different configurations for different applications
2Ease of operation
If height adjustment is made through screw or linkage accessible from ends of lower crosspiece, then height adjustment is achieved, but articulation is necessary which limits number of rollers to two
Solution Approach 1:
The coupling between rolling units incorporates a degree of freedom that allows tilting of rolling units relative to each other. This dynamic articulation enables the system to accommodate height adjustments and angular variations without requiring a fixed two-roller configuration, allowing additional rollers to be added for increased load capacity
3Adaptability or versatility
If inclined support ramps with sliding bearing surfaces are used, then height adjustment and angular adaptation are achieved, but blocking situations and difficult adjustment occur
Solution Approach 1:
The support function is segmented into discrete rolling units with defined coupling points. Each rolling unit can tilt independently with controlled degrees of freedom, preventing the blocking situations that occur with continuous sliding ramps while maintaining angular adaptation capability through the articulated coupling mechanism
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 design overcomes the limitation of two rollers per carriage, allowing for easier adjustment and greater adaptability, reducing manufacturing costs and improving the combination of rolling units to better match load requirements, while maintaining a single height adjustment point and angular adaptation to opening rail inclination.
Implementation Method 1
at least two rolling units 28, 29 each connected to the base 22 and provided with a rolling roller 30 mounted free to rotate about an axis of rotation R
Implementation Method 2
the first mechanical connection 34 has a degree of freedom allowing tilting of the first rolling unit 28 relative to the second rolling unit 29 about a pivot axis P
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
The invention relates to a rolling device (10) for a sliding door (4) of a window or door frame (0) movable along a sliding direction (C), said rolling device (10) comprising at least one carriage (20) having a base (22) provided with at least two support elements (26), and at least two rolling units (28, 29), each connected to the base (22) and provided with a roller (30) and a support area (32) bearing against one of the support elements (26), a first rolling unit (28) of the at least two rolling units (28, 29) being coupled to a second rolling unit (29) of the at least two rolling units (28, 29) so as to form a first mechanical linkage (34) connecting the first rolling unit (28) to the second rolling unit (29) and presenting to minus one degree of freedom.