Adjustable Door Pinch Guard with Screw-Set Cover Profile

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Solution Overview

Problem

Existing anti-trap devices for doors struggle to adapt to varying distances between door hinges and frames, leading to inadequate pinch protection as different configurations require multiple cover profiles with specific dimensions.

Innovation Solution

A pinch protection device featuring an adjustable fastening element and cover profile, where the distance between the cover profile and the door frame can be adjusted using a screw connection and locking means, allowing for continuous adjustment and secure attachment without the need for recesses in the door frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple cover profiles with specific dimensions are used to adapt to varying hinge distances, then adaptability to different door configurations is improved, but device complexity and manufacturing costs increase

Engineering Contradiction:

Improveadaptability to varying hinge distancesVSAvoidcomplexity of multiple cover profiles

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a single cover profile that can function at multiple positions along the fastening element. The cover profile is elongated and can be attached at different distances from the door frame by positioning it at different locations on the fastening element, eliminating the need for multiple specialized cover profiles for different hinge distances

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent applies dynamics by making the cover profile position adjustable rather than fixed. The cover profile can be repositioned along the fastening element to accommodate varying hinge distances, transforming a static single-function design into a dynamic multi-position design that adapts to different door configurations

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple cover profiles with specific dimensions are used to adapt to varying hinge distances, then adaptability to different door configurations is improved, but manufacturing costs increase

Engineering Contradiction:

Improveadaptability to varying hinge distancesVSAvoidmanufacturing costs

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the functions of multiple cover profiles into a single universal cover profile. Instead of manufacturing separate cover profiles for different hinge distances, the design combines all necessary positioning capabilities into one component that can be attached at various locations along the fastening element

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If the fastening element has a length less than a quarter of the cover profile, then ease of attachment is improved, but the adjustment range is reduced

Engineering Contradiction:

Improveease of attachmentVSAvoidadjustment range

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent resolves this contradiction by utilizing the longitudinal dimension of the fastening element. The cover profile extends along the length of the fastening element, and different attachment positions are achieved by positioning the cover profile at different locations along this dimension. The fastening element's length is optimized to provide sufficient adjustment range while maintaining ease of attachment

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP3425155B1Finger guard for a door

Publication Date: 2022.07.20 ATHMER

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AI summary

The invention relates to a door pinch protection device comprising a fastening element (200; 501; 1100; 1500; 1801; 2103; 2200; 2300) for fastening to a door frame (102) of the door and a cover profile (100; 900; 1800; 1900), wherein the cover profile (100; 900; 1800; 1900) can be fastened to the fastening element (200; 501; 1100; 1500; 1801; 2103; 2200; 2300), wherein a distance of the cover profile (100; 900; 1800; 1900) from the door frame (102) is determined by the fastening element (200; 501; 1100; 1500; 1801; 2103; 2200; 2300) fixed state and in the fixed state of the fastening element (200; 501; 1100; 1500; 1801; 2103; 2200; 2300) is adjustable.