Hinge Locking Mechanism for Door Hood Profile Positioning

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing door systems lack a structurally simple and easy-to-handle locking device for the hood profile, requiring additional components and tools to lock the hood profile in positions other than the fully closed or fully open positions, and often provide an insecure connection when the hood profile is pivoted upwards.

Innovation Solution

A locking device featuring a base profile with a circular segment-shaped groove and a hood profile with a circular segment-shaped projection, where the projection engages in the groove to secure the hood profile in various positions, utilizing elasticity to lock the hood profile without additional components or tools, and ensuring secure attachment and detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking device is provided in the hinge to lock the hood profile in the fully closed position, then the hood profile can be locked securely in the closed position, but the hood profile cannot be locked in other positions (e.g., fully open position) without additional separate locking devices

Engineering Contradiction:
Improvelocking reliability in closed positionVSAvoidlocking capability in multiple positions
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The locking device is segmented into two functional parts: a locking mechanism for the closed position and a separate detachable connection mechanism for other positions. This segmentation allows each part to specialize in its function while avoiding the need for multiple complex locking devices.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The hinge connection serves multiple functions: it acts as a locking device when the hood profile is closed and as a detachable connection mechanism when the hood profile is in other positions. This multi-functionality eliminates the need for additional separate locking devices.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If additional separate locking devices are provided to lock the hood profile in positions other than closed, then the hood profile can be locked in multiple positions, but the device complexity and assembly difficulty increase

Engineering Contradiction:
Improvelocking capability in multiple positionsVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The locking device and detachable connection mechanism are merged into a single integrated hinge assembly. This combination reduces the total number of components and simplifies assembly while maintaining the ability to lock in multiple positions.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The hinge connection performs multiple functions simultaneously: providing locking capability in the closed position and enabling detachable connection in other positions. This universality eliminates the need for additional separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If the hood profile can be lifted upwards from the base profile at a pivoting angle of approx. 45°, then the hood profile is easy to remove, but the connection is not secure when the hood profile is pivoted upwards

Engineering Contradiction:
Improveease of removalVSAvoidconnection security at pivoted position
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connection mechanism transitions from a rigid locked state when closed to a controlled detachable state when pivoted. The interlocking elements are designed to maintain security during normal operation but allow easy detachment when intentionally released at pivoted positions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The hinge connection acts as an intermediary mechanism that mediates between the secured closed position and the removable open position. It provides a controlled transition state that maintains security while enabling easy removal when needed.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enables the hood profile to be locked in multiple positions securely without additional components or tools, providing a stable connection across different pivoting angles and preventing undesired detachment, thus enhancing the functionality and usability of the door system.

Implementation Method 1

the web of the hood profile having a defined elasticity

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP1873339B1Door system
Publication Date: 2010.10.06 GEZE GMBH
  • EP1873339B1 patent drawingFigure 1~2
  • EP1873339B1 patent drawingFigure 3~4
  • EP1873339B1 patent drawingFigure 5~6

AI summary

The door system has a housing with an inner space, in which components of the system are arranged, where the housing exhibits a base profile (5) and a hood profile (7). The hood profile is detachably mountable at the base profile in a fixing area (11), and the hood profile has a coupling surface, which is hinged in a receiving surface of the base profile. A locking device is formed by a projection and grooves, and locks the hood profile in a rotating position against the base profile, where the locking device is designed in a hinge (8).