Adjustable Hinge-Side Finger Guard for Tool-Free Door Mounting
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Solution Overview
Problem
Existing hinge-side finger protection devices for doors are cumbersome to install and may require drilling into the door frame or leaf, and they often do not adapt well to different door hinge shapes, posing a risk of accidental finger trapping, especially for children.
Innovation Solution
A hinge-side finger protection device with a protective profile that can be clamped between door hinges or a hinge and a stop device, featuring an adapter part that adjusts in the longitudinal direction for fit, allowing easy installation without tools and adaptation to various hinge shapes, and optionally includes a securing profile for additional attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing hinge-side finger protection devices are installed, then finger protection is provided, but installation becomes cumbersome and may require drilling into the door frame or leaf
Solution Approach 1:
The protective profile is divided into modular sections that can be independently positioned and secured. The adapter part serves as a separate mounting component that interfaces with the door hinge, allowing the protective profile to be attached without drilling into the door frame or leaf. This segmentation enables tool-free installation while maintaining reliable finger protection.
Solution Approach 2:
The adapter part acts as an intermediary component between the protective profile and the door hinge. It provides a mounting interface that eliminates the need for direct attachment to the door frame or leaf, thereby enabling easy installation without drilling while ensuring secure fixation of the protective profile.
2Reliability
If existing finger protection devices are used, then protection is provided, but they do not adapt well to different door hinge shapes
Solution Approach 1:
The adapter part is designed with a universal mounting interface that can accommodate various door hinge shapes and configurations. This single adapter design serves multiple functions across different hinge types, enabling the protective profile to be effectively installed on diverse door systems without requiring hinge-specific customization.
Solution Approach 2:
The adapter part incorporates adjustable parameters such as positioning features and mounting configurations that can be modified to suit different door hinge shapes. This adjustability allows the same protective profile system to adapt to varying hinge geometries while maintaining reliable finger protection.
3Ease of operation
If protective profile is clamped between door hinges, then easy installation is achieved, but secure fit may be compromised
Solution Approach 1:
The adapter part is pre-configured with mounting features that engage with the door hinge before the protective profile is installed. This preliminary action ensures that the mounting structure is securely established in advance, providing a strong foundation that maintains secure fit while enabling easy installation of the protective profile.
Solution Approach 2:
The mounting system combines the adapter part made from materials optimized for strong engagement with the door hinge, and the protective profile made from materials suited for finger protection. This composite approach ensures both easy installation and secure fit by leveraging the strengths of different materials in their respective components.
Data Source
AI summary
A hinge-side finger protection device for a leaf door includes a protective profile attachable to the leaf door by clamping between two door hinges or between a door hinge and a stop device. An adapter part is further present having an end face of which the position relative to the protective profile is changeable in the longitudinal direction in order to enable the protective profile to be inserted and clamped between the door hinges or between the one door hinge and the stop device. The adapter part is insertable into the protective profile. The end face of the adapter part is arranged on a side of the adapter part opposite the protective profile when the adapter part is inserted in the protective profile. The hinge-side finger protection device enables quick and easy installation on a door and can be used with a different door hinges.