Folding Movable Panels With Lower-Rail Load-Bearing Carriages

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing movable panels systems face challenges with increasing panel dimensions, leading to critical support and movement issues, structural problems with upper beams, and installation limitations, especially in outdoor settings with insufficient load-bearing structures.

Innovation Solution

A folding movable panels system with a lower guide and vertically spaced upper guide, utilizing load-bearing carriage and hinge devices to distribute weight onto the lower rail, allowing rotation and sliding without relying on upper supports, and featuring auxiliary wheels and anti-lifting profiles to prevent detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If panel dimensions are increased to allow natural lighting, then illumination intensity is improved, but support and movement stability deteriorates

Engineering Contradiction:
Improvenatural lightingVSAvoidsupport and movement stability
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The panel system is divided into multiple smaller panels that can be individually supported and moved. Each panel has its own carriage and wheel assembly, distributing the support burden and maintaining stability even as overall system size increases to provide natural lighting.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support system transitions from a single upper guide to a dual-guide system with both upper and lower guides. The lower guide with carriage and wheels adds a horizontal movement dimension, while the upper guide provides vertical support, creating a stable two-dimensional support plane for large panels.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Illumination intensity

If panel dimensions are increased, then natural lighting is improved, but structural problems with upper beams worsen

Engineering Contradiction:
Improvenatural lightingVSAvoidupper beam structural integrity
Core Design Contradiction:
Illumination intensityVSStrength

Solution Approach 1:

The critical support function is extracted from the upper beam system and transferred to the lower guide with carriage and wheel assembly. The upper beam retains only the guiding function, significantly reducing the structural load and eliminating strength problems while still enabling large panels for natural lighting.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The traditional support arrangement is inverted: instead of the upper guide bearing the full weight, the lower guide with carriage becomes the primary load-bearing element. This inversion transfers structural demands from ceiling-mounted beams to floor-mounted infrastructure.

Inventive Principle:
Principle #13The other way round (Inversion)

3Device complexity

If full weight is borne by upper guide, then device complexity is reduced, but ease of operation deteriorates

Engineering Contradiction:
Improveguide system structureVSAvoidpanel movement
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The lower guide system incorporates movable carriages with wheels that can dynamically support and transport panels along the longitudinal axis. This dynamic support mechanism makes panel movement effortless while the upper guide maintains a relatively simple fixed structure.

Inventive Principle:
Principle #15Dynamics

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 system ensures stable, efficient movement and installation in various environments, including outdoor settings, by distributing weight evenly onto the ground plane, preventing panel detachment, and maintaining aesthetic cleanliness with minimal maintenance.

Implementation Method 1

load-bearing carriage groups (5), respectively engaged to a lower edge (42a) of the sliding panel (4a), suitable for discharging the force of weight of said sliding panel (4a) onto the lower rail (20)

Methodology Applied
Scientific EffectWeight distribution: Gravitation

Implementation Method 2

a hinge device (6), engaged to an upper edge (43a) of the sliding panel (4a), suitable for allowing the rotation of the sliding panel (4a) around a vertical axis substantially parallel to the first rotation axis (R1-R1)

Methodology Applied
Scientific EffectHinge rotation: Hinge

Implementation Method 3

The load-bearing carriage group (5) comprises at least one wheel (53) engaged in a slidingly free manner to the at least one rail (20) and hinged in a rotationally free manner to the supporting body (50)

Methodology Applied
Scientific EffectWheel rolling: Wheel

Implementation Method 4

The load-bearing carriage group (5) comprises an anti-lifting profile (808), having a shape complementary to an auxiliary housing (270) defined by auxiliary partitions (27) in the lower guide (2), in which it is inserted

Methodology Applied
Scientific EffectMechanical constraint: Mechanical Fastener

Data Source

PatentEP4223969B1A folding movable panels system
Publication Date: 2025.07.02 METALGLAS BONOMI
  • EP4223969B1 patent drawingFigure 1~1b
  • EP4223969B1 patent drawingFigure 2
  • EP4223969B1 patent drawingFigure 2a

AI summary

The invention relates to a movable panels systems (1) comprising a lower guide (2) having at least one rail (20), an upper guide (3) and at least one sliding panel (4a). The movable panels system (1) comprises rotating and sliding means operatively connected to the sliding panel (4a), comprising: a) a hinge device (6) engaged at the upper edge (43a) and engaged in a rotationally free manner in relation to the upper guide (3); b) a load-bearing carriage group (5) engaged at the lower edge (42a), comprising a supporting body (50), a plurality of wheels (53) hinged to the supporting body (50) and engaged in a freely sliding manner to a rail (20), and a lower body (52) engaged to the sliding panel (4a) and engaged in a rotationally free manner to the supporting body (50) by means of a lower pin (51); a thrust bearing (55) engaged to the lower pin (51) and is suitable for allowing the rotation of the lower body (52).