Lid Fitting Opening Angle Limiter with Rotatable Stop Surfaces

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Adjusting the maximum opening angle of a lid fitting to match specific applications is time-consuming and imprecise with existing technologies, particularly when avoiding collisions with ceilings or other elements.

Innovation Solution

The lid fitting incorporates an opening angle limiter with multiple stop and support surfaces along its circumference, allowing for easy alignment and adjustment of the maximum opening angle, with a counter surface providing stable support to prevent rotation at the desired position, enabling precise setting of opening angles without manual readjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If an opening angle limiter is used to restrict the maximum opening angle of the lid fitting, then collision with ceilings or other elements is avoided, but the lid fitting cannot reach its originally intended maximum opening position

Engineering Contradiction:

Improvecollision avoidanceVSAvoidopening angle

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The opening angle limiter is designed as a rotatable component that can dynamically adjust between different limiting positions. The limiter features multiple stop surfaces at different radial distances from the rotation axis, allowing the maximum opening angle to be changed by rotating the limiter to different positions, thus adapting to different operational requirements

Inventive Principle:

Principle #15Dynamics

2Stability of the object's composition

If multiple lid fittings are used to hold a lid, then stability is improved, but adjusting each fitting to the exact same maximum opening angle is time-consuming

Engineering Contradiction:

Improvelid holding stabilityVSAvoidadjustment time

Core Design Contradiction:

Stability of the object's compositionVSLoss of time

Solution Approach 1:

The opening angle limiter is segmented into multiple discrete stop surfaces positioned at different radial distances from the rotation axis. Each stop surface corresponds to a specific maximum opening angle. This segmentation allows for quick selection of predetermined angles without complex adjustment procedures, enabling multiple lid fittings to be set to the same angle efficiently

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention provides discrete parameter options through multiple stop surfaces at different radial positions. By changing the radial distance parameter (selecting different stop surfaces), the maximum opening angle is adjusted in predetermined steps. This eliminates the need for precise manual measurement and adjustment, significantly reducing setup time for multiple fittings

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If a simple stop element is used to limit the opening angle, then device complexity is reduced, but adjustment precision is insufficient

Engineering Contradiction:

Improvelimiter structureVSAvoidopening angle setting precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The invention adds a rotational dimension to the opening angle limiter. Instead of a simple linear stop, the limiter rotates about an axis perpendicular to the lid fitting plane, providing multiple stop surfaces at different radial distances. This dimensional addition enables precise angle selection while maintaining a relatively simple overall structure

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3623555B1Lid fitting for swingable mounting of a lid to a furniture unit

Publication Date: 2023.12.20 FLAP COMPETENCE CENT KFT

Figure 1
Figure 2
Figure 3

AI summary

The present invention relates to a lid fitting (1) for pivotally attaching a lid (2) to a furniture body (3), wherein the lid fitting (1) comprises: a first fitting part (9) and a second fitting part (13) which are arranged to be movable relative to each other, and an opening angle limiter (15) for setting a maximum opening angle (α) of the lid fitting (1), wherein the opening angle limiter (15) is rotatably mounted on the first fitting part (9) about a first axis of rotation (D1), and wherein the opening angle limiter (15) has at least one first stop surface (18) along its outer circumference, against which the second fitting part (13) rests in a first open position of the lid fitting (1) having the maximum opening angle (α), wherein the opening angle limiter (15) has at least one first support surface (21) spaced circumferentially from the first stop surface (18) along its outer circumference. exhibitswherein the opening angle limiter (15) in the first open position of the cover fitting (1) is supported with the first support surface (21) on a counter surface (24) which is fixedly arranged relative to the first fitting part (9).