Furniture Fitting Fastener for Tool-Free Secure Assembly

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Solution Overview

Problem

Existing fittings for mounting furniture components, doors, or windows on support structures are technically complex, leading to difficult assembly and increased risk of incorrect operation.

Innovation Solution

A fastening device with a first component featuring an unthreaded section and a second component with a mating thread, allowing for quick and tool-free assembly by sliding and pivoting movements, and optionally enhanced by adhesive points or additional fixing means.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a complex fastening device design is used, then the fitting provides sufficient strength and reliability, but the assembly process becomes difficult and time-consuming

Engineering Contradiction:
Improvefitting securityVSAvoidassembly ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The fastening device is divided into two separate components: a first component with a threaded section and an unthreaded section, and a second component with a mating thread. This segmentation allows for a simplified assembly process where the components can be quickly joined by sliding and pivoting movements, while still providing sufficient fastening security through the threaded engagement.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The unthreaded section is positioned adjacent to the mating thread in the disassembled state, pre-aligning the components for easy assembly. The threaded section is designed with a specific geometry that guides the mating thread during the pivoting movement, ensuring proper engagement without requiring complex alignment procedures.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If a complex fastening device design is used, then the fitting provides sufficient strength and reliability, but the assembly process requires tools and technical expertise

Engineering Contradiction:
Improvefitting securityVSAvoidassembly simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The fastening device is designed to be self-assembling through simple sliding and pivoting movements of the two components. The threaded section and mating thread are configured such that the assembly process can be completed without tools or specialized technical knowledge, making the fitting easy to manufacture and install while maintaining reliable fastening security.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If a simple fastening device design is used, then the assembly process is simplified, but the fitting security and reliability are reduced

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

Solution Approach 1:

The fastening device is divided into two separate components: a first component with a threaded section and an unthreaded section, and a second component with a mating thread. This segmentation allows for a simplified assembly process where the components can be quickly joined by sliding and pivoting movements, while still providing sufficient fastening security through the threaded engagement.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fastening device combines different structural elements (threaded section, unthreaded section, mating thread) in a composite design that integrates both simplicity and security. The threaded portion provides reliable fastening, while the unthreaded section and pivoting mechanism enable easy assembly, creating a composite solution that addresses both requirements simultaneously.

Inventive Principle:
Principle #40Composite materials

4Reliability

If traditional threaded fastening is used throughout, then the fitting security is maintained, but the assembly time increases significantly

Engineering Contradiction:
Improvefastening securityVSAvoidassembly time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The unthreaded section is positioned adjacent to the mating thread in the disassembled state, pre-aligning the components for easy assembly. The threaded section is designed with a specific geometry that guides the mating thread during the pivoting movement, ensuring proper engagement without requiring complex alignment procedures or time-consuming operations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The fastening device incorporates a dynamic assembly process with two distinct phases: a sliding movement that quickly brings the components together, followed by a pivoting movement that engages the threaded sections. This dynamic approach significantly reduces assembly time compared to traditional static threaded fastening, while maintaining fastening security through the threaded engagement.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP4515061B1Fitting for movably mounting a furniture part
Publication Date: 2025.12.24 JULIUS BLUM GMBH
  • EP4515061B1 patent drawingFigure 1~2
  • EP4515061B1 patent drawingFigure 3~4
  • EP4515061B1 patent drawingFigure 5~7

AI summary

The invention relates to a fitting (1) for movably mounting a furniture part (2), a door, or a window on a support structure (3), comprising a first fitting part (4), which is connected or can be connected to the furniture part (2), the door, or the window, and at least one second fitting part (5), which is connected or can be connected to the support structure (3). At least one securing device (6) is provided, by means of which the first fitting part (4) can be secured to the second fitting part (5), wherein the securing device (6) comprises at least one first component (7) with at least one thread-free section (8) and at least one threaded section (9) and at least one second component (10) with at least one mating thread (11), and the thread-free section (8), the threaded section (9), and the mating thread (11) are arranged on the two components (7, 10) of the securing device (6) such that the mating thread (11) contacts the thread-free section (8) in a sliding position and is engagement with the threaded section (9) in an engagement position.