Integrated Hinge Shutter-Stop with Coaxial Blocking
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Solution Overview
Problem
Existing shutter-stop devices for doors and windows are cumbersome, require separate installation, and cause excessive mechanical stress due to their eccentric positioning, leading to undesired leaf movement during wind gusts.
Innovation Solution
Integrated male hinges with coaxial blocking means that allow for simultaneous installation with female hinges, featuring a turnable top element and axially slidable bottom element to block the leaf in the open position, reducing transverse encumbrance and installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional separate shutter-stop devices are installed, then the leaf can be blocked in the open position, but the device becomes cumbersome and requires additional separate installation operations
Solution Approach 1:
The patent combines the shutter-stop blocking function with the male hinge into a single integrated device. The blocking means are arranged coaxially with the hinge axis, merging two previously separate functions (hinge and shutter-stop) into one unified component that performs both rotation support and blocking operations
2Reliability
If traditional separate shutter-stop devices are installed, then the leaf can be blocked in the open position, but additional installation operations and separate shutter-stop installation are required
Solution Approach 1:
The shutter-stop blocking function is merged with the male hinge into a single integrated device, allowing both components to be installed simultaneously in one operation rather than requiring separate installation steps for the hinge and the shutter-stop
3Reliability
If the shutter-stop device is positioned eccentrically, then the blocking function is achieved, but higher mechanical stresses occur requiring excessive oversizing
Solution Approach 1:
The patent employs asymmetric positioning of the blocking means relative to the hinge axis. The blocking means are arranged coaxially with the hinge, creating a specific geometric relationship that optimizes force distribution and reduces mechanical stress compared to traditional eccentric positioning
Solution Approach 2:
The blocking means are arranged in a different spatial dimension - coaxially with the hinge axis rather than eccentrically offset. This dimensional repositioning changes the force vector relationships and reduces the mechanical leverage that causes excessive stress
4Reliability
If the shutter-stop device is positioned eccentrically, then the blocking function is achieved, but the transverse encumbrance increases
Solution Approach 1:
The blocking means are positioned asymmetrically - specifically coaxially with the hinge axis - which allows the device to maintain a compact transverse profile while still achieving effective blocking function, reducing the overall footprint on the wall surface
Data Source
Figure 1A~1C
Figure 2
Figure 3~4
AI summary
A shutter-stop device for a male hinge (6) with removable hinge-pin, comprising a part that is able to turn with the leaf (2) and is designed to co-operate with a non-turnable part associated to the male hinge (6) for blocking the leaf (2) when it is in the open position. Said device comprises, in combination: a top element (5) designed to turn fixedly with a female hinge (4) of the leaf (2); and a bottom element (7) that can slide axially on the fixed male hinge (6) that prevents rotation thereof. Said top element (5) is designed to engage automatically with said bottom element (7) for blocking the leaf (2) in the open position, and to disengage from said bottom element (7) when the latter is actuated by the user for releasing the leaf (2).