Hinged Container With Radial Holding for Opening-Angle Stability

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Solution Overview

Problem

Existing pivotable containers suffer from unintentional opening due to simultaneous release of connecting elements when a certain force is applied parallel to the pivot axis, leading to uncontrollable opening and potential loss of contents.

Innovation Solution

The connecting elements are designed with holding parts that move radially to the pivot axis for connection and are secured by a locking mechanism, preventing unintentional release by ensuring separate directional movements for connection and separation, thereby stabilizing the opening angle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If connecting elements are designed with single-direction release mechanism parallel to pivot axis, then assembly is simplified, but unintentional release occurs when force is applied parallel to pivot axis

Engineering Contradiction:
Improveassembly simplicityVSAvoidconnection security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent introduces a second connection direction by adding holding parts that move radially to the pivot axis, perpendicular to the original connecting means movement direction. This dimensional change creates orthogonal connection vectors, ensuring that force applied in one direction cannot simultaneously release both connections, thereby preventing unintentional opening while maintaining assembly simplicity.

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

2Ease of manufacture

If connecting means are moved parallel to pivot axis for connection, then connection is achieved, but simultaneous release of multiple connecting means causes uncontrollable opening

Engineering Contradiction:
Improveconnection mechanismVSAvoidopening angle stability
Core Design Contradiction:
Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The patent segments the connection mechanism into two independent subsystems: connecting means that move parallel to the pivot axis and holding parts that move radially to the pivot axis. Each subsystem operates in a different directional plane, creating independent connection paths. This segmentation ensures that the opening angle remains stable because both connection types must be simultaneously released, which is prevented by the orthogonal movement directions.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If holding parts are added with radial movement to pivot axis, then one-handed assembly is enabled and security against accidental opening is enhanced, but device complexity increases

Engineering Contradiction:
Improveone-handed assembly capabilityVSAvoidconnecting element structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the connecting means and holding parts into a single integrated connecting element structure. The connecting element simultaneously provides both the connecting means for parallel movement and the holding parts for radial movement, consolidating multiple functions into one component. This merging reduces overall system complexity compared to using separate components for each connection type.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4620348A1Hinged container with opening angle limitation
Publication Date: 2025.09.24 RIMOWA GMBH
  • EP4620348A1 patent drawingFigure 1~2
  • EP4620348A1 patent drawingFigure 3~4
  • EP4620348A1 patent drawing

AI summary

The present invention relates to a container (1) comprising at least two frame elements (2) circumferentially surrounding an inner receiving space for receiving objects, which frame elements are connected to one another on one side so as to be pivotable about a pivot axis (X) from a closed state of the container (1) into an open state of the container (1), wherein a maximum opening angle of the frame elements (2) is limited by means of at least one foldable connecting element (6). The connecting element (6) has at least two connecting means (8) and at least two holding parts (10), and the frame elements (2) each have, on an inner wall on side sections (12) extending radially to the pivot axis (X), at least one corresponding counter-connecting means (14) for detachably connecting to the connecting means (8) of the connecting element (6) and at least one counter-holding part (16) for detachably connecting to the holding parts (10) of the connecting element (6).To connect the connecting means to the respective counter-connecting means (14), the connecting means (8) are movable parallel to the pivot axis (X) to the respective corresponding counter-connecting means (14) and to connect the holding part (10) to the respective counter-holding part (16), the holding parts (10) are movable radially to the pivot axis (X) to the respective corresponding counter-holding part (16).