Pivoting Furniture Fitting With Adjustable Spring and Lever Axis

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Solution Overview

Problem

Existing furniture fittings require higher spring forces for heavier furniture flaps, leading to increased manual effort in opening and closing, and lack flexibility in accommodating varying weights.

Innovation Solution

A fitting with an adjusting device that allows independent or simultaneous adjustment of the spring force and pivot axis position, enabling the use of stronger springs without significantly altering the closing force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a pivot element is designed to be adjustable and movable, then adaptability and versatility are improved, but device complexity increases

Engineering Contradiction:

Improveadjustability of pivot elementVSAvoidcomplexity of fitting mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fitting is divided into separate functional components: a body with mounting features, a pivot element with independent movement capability, and a fastening mechanism. This segmentation allows each part to perform its specific function while maintaining overall simplicity and adjustability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pivot element is designed to be movable rather than fixed, allowing it to rotate and adjust to different positions. This dynamic design enables the fitting to adapt to various orientations and angles while maintaining a relatively simple overall structure through the use of basic mechanical joints.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a pivot element is made movable and adjustable, then versatility is improved, but reliability decreases due to potential loosening

Engineering Contradiction:

Improvemovability of pivot elementVSAvoidstability of pivot connection

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The fastening mechanism is designed to pre-load and secure the pivot element in its desired position before use. This preliminary securing action prevents the pivot from loosening during operation, maintaining both adjustability and reliability simultaneously.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A fastening mechanism acts as an intermediary between the body and the movable pivot element, providing a secure connection that maintains reliability while allowing the pivot to remain adjustable and movable within designed parameters.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If complex fitting mechanisms are used to support a pivot element, then adaptability is improved, but ease of manufacture worsens

Engineering Contradiction:

Improveadjustability capabilityVSAvoidmanufacturing complexity of fitting

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By dividing the fitting into standardized, separable components with simple geometries and common fastening methods, each part can be manufactured independently using standard processes, reducing overall manufacturing complexity while maintaining adjustability capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The fitting components are designed with universal features and standardized interfaces that can be manufactured using common processes and materials. This universality allows the same basic components to achieve multiple functions (mounting, pivoting, adjusting) without requiring complex specialized manufacturing for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4665932B1Fitting for the movable mounting of a pivoting element

Publication Date: 2026.05.13 JULIUS BLUM GMBH

Figure 1a~1b
Figure 2a~2b
Figure 3a~3b

AI summary

The invention relates to a fitting (4), which is designed as a furniture fitting or a building fitting, for movably supporting a pivoting element (3), in particular a movable furniture part (3a), relative to a stationary structure (2), in particular a furniture carcass (2a), comprising: at least one main body (5) to be fastened to the stationary structure (2), at least one actuating arm (6) to be connected to the pivoting element (3), at least one spring device (7) for applying a force to the at least one actuating arm (6), wherein the spring device (7) is supported via at least one support device (14) on at least one main body (5), at least one transfer mechanism (9) for transferring a force of the at least one spring device (7) to the at least one actuating arm (6), wherein the transfer mechanism (9) has at least one transfer lever (9a) which can be pivoted about a joint axis (11), at least one force setting device (8) for setting a force of the spring device (7) on the at least one actuating arm (6), wherein at least one setting device (10), preferably separate from the at least one force setting device (8), is provided, by means of which a position of the at least one joint axis (11) of the at least one transfer lever (9a) relative to the main body (5) can be set.