Revolving Door Drum Structure With Nested Roof Support

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Solution Overview

Problem

Existing revolving doors have complex ceiling assemblies that require external support beams or columns, leading to a tall structure and on-site assembly challenges, affecting appearance and structural integrity.

Innovation Solution

The drum elements are constructed with inner and outer glass elements having lateral offsets, allowing seamless integration of support profiles and a modular ceiling assembly that can be pre-assembled, reducing the need for external support and simplifying installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the ceiling assembly is supported by external beams or columns, then the structural stability is improved, but the appearance is degraded and the structure becomes taller

Engineering Contradiction:
Improvestructural stabilityVSAvoidappearance
Core Design Contradiction:
Stability of the object's compositionVSShape

Solution Approach 1:

The support profiles are nested within the lateral offset between the inner and outer glass elements of the drum elements. The ceiling assembly is supported by these nested support profiles, eliminating the need for external beams or columns. This nesting approach maintains structural stability while preserving a clean, modern appearance without protruding support structures.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The invention utilizes the lateral dimension (radial offset) between the inner and outer glass elements to accommodate support profiles, rather than using vertical or horizontal extensions. This dimensional approach allows support structures to be hidden within the existing radial space, maintaining aesthetic appearance while providing necessary structural support.

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

2Stability of the object's composition

If the ceiling assembly is constructed as a structural unit with drum elements requiring on-site assembly, then the structural integrity is improved, but the assembly time and complexity increase

Engineering Contradiction:
Improvestructural integrityVSAvoidassembly time
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The ceiling assembly is segmented into modular components that can be pre-assembled and pre-tested in a controlled environment before installation. These modular segments are then easily installed on-site by simply connecting them to the drum elements, reducing on-site assembly time and complexity while maintaining structural integrity through standardized connection interfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support profiles and ceiling assembly components are pre-assembled and prepared in advance in a manufacturing setting. This preliminary action allows for quality control, precise alignment, and proper fastening before the components are transported to the installation site, significantly reducing on-site assembly time and ensuring structural integrity.

Inventive Principle:
Principle #10Preliminary action

3Ease of manufacture

If the drum elements use a conventional single-layer construction, then the manufacturing is simpler, but the ability to integrate support profiles is reduced

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidintegration capability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The drum elements are constructed as composite structures with inner and outer glass elements separated by a lateral offset. This composite construction maintains the aesthetic and structural benefits of glass while creating an integrated support system within the radial offset. The support profiles are embedded within this composite structure, providing both manufacturing feasibility and enhanced adaptability for integrating ceiling support functionality.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP4555184B1Revolving door and method for constructing a revolving door
Publication Date: 2026.02.25 DORMAKABA DEUT GMBH
  • EP4555184B1 patent drawingFigure 1+
  • EP4555184B1 patent drawingFigure 2
  • EP4555184B1 patent drawingFigure 3~4

AI summary

The invention relates to a revolving door (100) having a turnstile (10) which is arranged between opposite drum elements (11), and having a roof assembly (12) which is arranged on the upper side of the drum elements (11) and on which the turnstile (10) is rotatably mounted, wherein at least one of the drum elements (11) has an inner glass element (11a) and an outer glass element (11b), wherein the drum element (11) has a lateral offset, more particularly on both sides of the drum element (11), between the inner glass element and the outer glass element.