Finger Guard Mounting Profile for Tight Door Retrofits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing finger protection devices for pivoting hinged doors with handle bars are difficult to retrofit and require special tools for installation, often damaging components and occupying valuable space, especially when installed on doors with existing grab bars.
Innovation Solution
A finger protection device featuring a mounting profile designed as an angle profile with a support leg, fastening leg, and connecting leg, allowing easy attachment and removal without tools, and minimizing space requirements by accommodating existing grab bars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mounting profile is used to fasten the roller blind to the door leaf, then the roller blind can be securely attached, but the mounting profile requires a relatively large amount of space that conflicts with existing grab bars
Solution Approach 1:
The mounting profile is divided into two separate components: a support profile fixed to the door leaf and a hanging profile attached to the roller blind. This segmentation allows the support profile to be compact and positioned away from the grab bar, while the hanging profile extends toward the grab bar area, reducing the overall space requirement on the door leaf surface.
Solution Approach 2:
The mounting system transitions from a two-dimensional planar mounting profile to a three-dimensional arrangement where the support profile is fixed at one location on the door leaf and the hanging profile extends in a different spatial direction toward the roller blind, utilizing vertical and depth dimensions to minimize conflict with horizontal grab bars.
2Reliability
If brackets with fastening elements are used to prevent tampering, then security is improved, but the fastening elements cover the screws making readjustment impossible and requiring special tools for removal
Solution Approach 1:
The fastening function is extracted from the mounting profile itself and implemented through separate fastening means (screws, clips, or other fasteners) that attach the support profile to the door leaf and the hanging profile to the roller blind. This allows the mounting profile to focus on positioning while the fastening mechanism remains accessible for adjustment and removal without special tools.
Solution Approach 2:
The fastening means are designed to be easily removable and reusable. After removal of the roller blind, the fastening means can be recovered and reused for reinstallation or adjustment, maintaining security while enabling future modifications without requiring special tools or causing damage.
3Reliability
If the roller blind housing is screwed to the door frame and the mounting profile is screwed to the door leaf, then secure attachment is achieved, but removal requires loosening all screws and removing the entire mounting profile
Solution Approach 1:
The mounting system is segmented into a permanently fixed support profile attached to the door leaf and a removable hanging profile attached to the roller blind. This allows the roller blind to be easily removed by detaching only the hanging profile, while the support profile remains in place for future use, simplifying both installation and removal processes.
Solution Approach 2:
The mounting system transitions from a static, permanently fixed configuration to a dynamic system where the hanging profile can be easily attached and detached from the support profile. This dynamic design allows for quick installation and removal of the roller blind while maintaining secure attachment during use, without requiring removal of the entire mounting structure.
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
The invention relates to a finger guard device for a pivotable leaf door, having a roller screen housing (1), a roller screen web (2) which has a fastening means (3), and a mounting profile (4). The finger guard device can be fastened to a door frame (R) by means of the housing (1) and to the leaf door (F) by means of the mounting profile (4). The fastening means (3) of the roller screen web (2) can be connected detachably to the mounting profile (4) so that the roller screen web (2) covers a gap between the door leaf (F) and the door frame (R) when the finger guard device is used as intended. The mounting profile (4) has a supporting leg (40) for placing on and fastening to the door leaf (F). The mounting profile is in the form of an angled profile and has a fastening leg (42, 43), which projects beyond the supporting leg (40), for detachably fastening the fastening means (3) of the roller screen web (2).