Rolling Device Cages with Inclined Ramps for Sliding Doors
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Solution Overview
Problem
Existing rolling devices for sliding doors and windows with multiple rollers are complex, costly, and prone to fragility due to load distribution issues and complex assembly, which can lead to blocking or seizing of components during adjustment.
Innovation Solution
A rolling device with a housing accommodating two cages mounted in horizontal and vertical translation, featuring inclined ramps and vertical adjustment means, allowing for simplified design and increased longevity by eliminating the need for pivoting mounting and enabling independent vertical movement of cages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rolling devices are designed with multiple rollers mounted in a pivoting assembly to distribute load, then load distribution is improved, but device complexity increases and reliability decreases
Solution Approach 1:
The rolling device is segmented into multiple independent cages, each containing a roller. These cages are arranged in parallel within the housing and can move independently horizontally and vertically, eliminating the need for a complex pivoting assembly while maintaining load distribution capabilities
Solution Approach 2:
Instead of mounting rollers in a pivoting assembly that rotates to distribute load, the invention inverts the approach by using fixed parallel cages that translate independently. The load distribution is achieved through the parallel arrangement and independent movement of cages rather than through pivoting motion
2Strength
If rolling devices use pivoting assembly to mount rollers, then load distribution is achieved, but reliability decreases due to fragility
Solution Approach 1:
The rolling device is segmented into multiple independent cages, each containing a roller. These cages are arranged in parallel within the housing and can move independently horizontally and vertically, eliminating the need for a complex pivoting assembly while maintaining load distribution capabilities
Solution Approach 2:
The inclined ramps provide a cushioning mechanism that guides the cages during movement. The inclined geometry allows for smooth transitions and reduces shock loads on the cages and rollers, preventing damage before it occurs
3Stability of the object's composition
If multiple sliding interlocks are used between cages and housing, then structural stability is improved, but ease of operation deteriorates due to blocking risk
Solution Approach 1:
The T-shaped grooves and rails that created blocking issues have been extracted and replaced with inclined ramp surfaces. The cages now interact with the housing through simple inclined plane contact rather than complex interlocking grooves, eliminating the blocking mechanism while maintaining stability
Solution Approach 2:
The cages are designed to move dynamically along inclined ramps rather than being constrained by fixed interlocking grooves. This dynamic movement along angled surfaces allows for smooth adjustment without the risk of blocking that characterized the static interlock system
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 simplifies the design and enhances the longevity of the rolling device by allowing cages to move in both horizontal and vertical directions, reducing the risk of blocking and improving load distribution, thus making adjustments easier and more reliable.
Implementation Method 1
The housing (7) comprises, internally, inclined bearing ramps (22; 22A) with which a bearing surface (23) of substantially identical inclination that said cages (13; 13A) comprise at least at a first end side (18)
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a rolling device (4) for a sliding door or window (1) opening (2), comprising a housing (7) accommodating at least two cages (13; 13A), one arranged behind the other, in a cage (13; 13A) being mounted for rotation about a horizontal axis (14), a roller (15), said cages (13; 13A) being mounted in the housing (7) which is movable in translation in at least one vertical direction (20) and in a horizontal direction (21) perpendicular to the axis of rotation (14) of the roller (15), said housing (7) comprising at least one inclined support ramp (22; 22A) with which at least one bearing surface (23) of substantially identical inclination to said cages (13; 13A) is applied, at least at the level of a first end side (18), characterized in that said cages (13;13A) comprise on a second end side (19), opposite to the first (18), a substantially vertical bearing face (26) cooperating, as the case may be, with a complementary bearing face (27) that comprises the housing (7), or a first end side (18) of an adjacent cage (13A;13).