Corner Hollow Body Fastening Assembly for Precise Room Cell Mounting

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Solution Overview

Problem

Existing fastening systems for cuboid-shaped room cells, such as containers, lack precise positioning and secure attachment of connecting parts like roofs, platforms, or staircases, leading to potential misalignment and assembly challenges.

Innovation Solution

A fastening device comprising an elongated fastening body with internal threading and a clamping body, allowing secure and precise attachment to the corner connecting hollow body, featuring an elongated opening for easy assembly and disassembly, ensuring the fastening body remains locked in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If existing fastening systems are used for cuboid-shaped room cells, then assembly can be performed, but precise positioning and secure attachment of connecting parts cannot be achieved

Engineering Contradiction:
Improvepositioning precisionVSAvoidattachment security
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The fastening device is divided into separate functional components: a fastening body with threading for secure attachment, a clamping body for positioning, and an elongated opening for tool-free assembly. This segmentation allows each component to optimize its specific function while working together as a integrated system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The clamping body acts as an intermediary element between the fastening body and the connecting part (roof, platform, staircase). It provides the clamping force necessary for precise positioning while allowing the fastening body to remain locked in place through its internal threading mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If secure fastening is achieved through complex fastening systems, then attachment security is improved, but assembly complexity and tool requirements increase

Engineering Contradiction:
Improveattachment securityVSAvoidassembly simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The fastening device enables tool-free assembly through its elongated opening design. The clamping body can be manually inserted and positioned through the opening, and the internal threading of the fastening body automatically secures the connection without requiring additional tools, making the system self-sufficient for assembly operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Instead of requiring tools to tighten and secure fastening elements from the outside, the design allows the fastening body to be inserted through the elongated opening and secured from the inside. The clamping body engages with the fastening body in reverse of traditional fastening systems, enabling simple manual assembly while maintaining secure attachment.

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

Data Source

PatentEP4545720B1Assembly of a corner connection hollow body of a room cell and a fastening device and method for mounting the fastening device on the corner connection hollow body
Publication Date: 2025.09.17 MODULRAUM GMBH
  • EP4545720B1 patent drawingFigure 1~2
  • EP4545720B1 patent drawingFigure 2.1~2.2
  • EP4545720B1 patent drawingFigure 3~3.1

AI summary

The invention relates to an arrangement (10) comprising a corner connecting hollow body (20.2) and a fastening device (13) for attaching a connecting part (12) to the corner connecting hollow body (20.2). An outer wall part (37.2) of the corner connecting hollow body (20.2) has an elongated opening (38.2) that is open to the outside (17) and that leads into a cavity (36) of the corner connecting hollow body (20.2). The fastening device (13) has an elongated fastening body (26) which includes a first fastening element (14.1) for releasably fastening a first connecting element (22) for attaching the connecting part (12) to the corner connecting hollow body (20.2). The fastening body (26) can be inserted from the outside through the opening (38.2) into the cavity (36) in an insertion and through position and can be moved into a locking position (30) within the cavity (36).The fastening device (13) has a clamping body (31) with clamping means (32.1, 32.2) for clamping the fastening device (13) to perforation edges (40) of the elongated perforation (38.2). The fastening device (13) comprises a fastening assembly (15) containing the clamping body (31) and the fastening body (26) as well as a second connecting means (23.1, 23.2) by means of which the clamping body (31) and the fastening body (26) are rigidly connected, but movably connected relative to each other.