Pivotable Hinge Finger Guard for Door Adaptation
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Solution Overview
Problem
Existing finger protection devices for wing doors are not adaptable to various door hinge situations, often impairing the door's appearance and being difficult to remove or adjust, leading to insufficient protection, especially when the distance between the door hinge and frame is large.
Innovation Solution
A finger protection device with pivotable and adjustable protective elements and fastening elements that can be aligned and fixed to match the door's shape and size, allowing for optimal positioning and easy installation, featuring elongated holes or slots for horizontal displacement and adjustable screws for secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a protective profile is clamped into the door gap to protect against finger entrapment, then finger protection is provided, but the device does not adapt to the shape of the door hinge, impairing the appearance of the door
Solution Approach 1:
The protective element is made pivotable relative to the fastening element, allowing it to dynamically adjust its position and angle. This pivoting capability enables the protective element to adapt to different door hinge shapes and positions, resolving the contradiction between providing effective finger protection and maintaining aesthetic appearance by accommodating various hinge configurations.
2Object-affected harmful factors
If cover strips are glued to the door frame to protect the hinge side, then finger protection is provided, but the cover strips are difficult to remove without damaging the hinges during renovation or moving
Solution Approach 1:
The protective device is divided into separate components: a fastening element that attaches to the door frame or door leaf, and a protective element that is pivotably connected to the fastening element. This segmentation allows the protective element to be easily removed and repositioned without damaging the door frame or hinges, while the fastening element remains in place, resolving the contradiction between providing protection and enabling easy removal during renovation or moving.
3Object-affected harmful factors
If the protective profile is positioned in the pivot axis when the door hinge is far from the door frame, then finger protection is provided, but the installation becomes complex and often inadequate
Solution Approach 1:
The pivotable connection between the protective element and fastening element allows the protective element to be positioned and adjusted at various distances from the door frame. This dynamic adjustment capability eliminates the need for complex underpinning when the hinge is far from the frame, as the protective element can be simply pivoted to the appropriate position, resolving the contradiction between providing effective protection and maintaining simple installation.
4Ease of manufacture
If the protective element is fixed in position, then easy installation is provided, but the device cannot be adjusted to match different door shapes and sizes
Solution Approach 1:
The protective element is designed to be pivotable relative to the fastening element, providing adjustability while maintaining ease of installation. The pivotable connection allows the protective element to be positioned at different angles and distances to match various door shapes and sizes, yet the overall device remains simple to install and remove, resolving the contradiction between ease of installation and adaptability.
5Adaptability or versatility
If the protective element is made pivotable relative to the fastening element, then adaptability to door hinge configurations is improved, but the device complexity increases
Solution Approach 1:
The device is segmented into a fastening element and a protective element connected by a pivotable joint. This segmentation provides adaptability through the pivotable connection while keeping each individual component relatively simple in structure. The modular design allows for easy assembly and disassembly, offsetting the slight increase in structural complexity with improved adaptability and ease of installation.
Data Source
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AI summary
A hinge-side finger guard (S) for a hinged door comprises at least one guard element (1, 3) and at least one fastening element (2, 4). The fastening element (2, 4) is designed, on the one hand, for attachment to a door leaf (F) of the hinged door or to a door frame (R) of the hinged door, and on the other hand, it supports the guard element (1, 3). The guard element (1, 3) is pivotable relative to the fastening element (2, 4). The finger guard according to the invention is versatile and allows for easy adaptation to the specific door hinge situation on site.