Finger Protection Device with Accessible Window
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Solution Overview
Problem
Existing finger protection devices for doors, such as roller blinds, are difficult to quickly release and reattach, especially for those with little experience, and often result in creasing issues when reinstalled.
Innovation Solution
A finger protection device with a protective cover featuring a closable window that allows access to the back without loosening the entire cover, equipped with a child lock and a self-winding roller blind mechanism for easy assembly and disassembly, and a window sash that can be opened and closed independently for quick access to sensors or locking bolts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective cover is made secure and complete to ensure safety, then protection reliability is improved, but access to components behind the cover becomes difficult
Solution Approach 1:
The protective cover is divided into a front part and a back part that can be separated. The front part remains attached to the door frame while the back part can be removed to access components behind it. This segmentation allows the cover to maintain its protective function while enabling easy access to sensors, locking bolts, and other components without compromising safety.
2Ease of operation
If the entire protective cover is loosened to access components behind it, then access is enabled, but reattachment becomes time-consuming and complex
Solution Approach 1:
By dividing the protective cover into separable front and back parts, only the back part needs to be removed for access, while the front part remains in place. This reduces the time and complexity of assembly and disassembly operations compared to removing the entire cover.
Solution Approach 2:
The front part of the protective cover is pre-attached to the door frame using fastening elements. This preliminary attachment means that during maintenance or installation, only the back part needs to be handled, significantly reducing the time and effort required for assembly and disassembly operations.
3Reliability
If the protective cover is made complete and secure, then safety is improved, but ease of manufacture and assembly is reduced
Solution Approach 1:
The protective cover is manufactured as separate front and back parts that can be assembled independently. The front part is attached to the door frame, and the back part is attached to the front part. This segmentation simplifies the manufacturing and assembly process while maintaining the complete protective function.
Solution Approach 2:
The front part of the protective cover is pre-assembled with fastening elements during manufacturing. This preliminary preparation reduces the complexity of final assembly on-site, as the back part can be directly attached to the pre-prepared front part without requiring complex assembly procedures.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A finger guard (S) for a hinged door has a protective cover (1) for covering a gap between a door frame (R) and a pivoting door leaf (F). The protective cover (1) has a back side which, in the intended use of the finger guard, faces the door leaf (F) and the door frame (R). The finger guard has a window (6) which, in the intended use of the finger guard, allows access to the back side of the protective cover (1).