Interlocking Roller Shutter Box Assembly Fitting
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Solution Overview
Problem
The existing methods for attaching a roller shutter box to a door or window frame are complex, time-consuming, and often require numerous manual screwing operations, leading to potential positioning faults and inefficiencies in installation, especially on construction sites where conditions may not be ideal.
Innovation Solution
An assembly fitting with interlocking hooking members and locking mechanisms that allow secure and precise attachment between the roller shutter box and the door or window frame, eliminating the need for manual screwing by enabling pre-assembly on the production line or site, using first and second fixing means that cooperate through interlocking and locking positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fixing brackets or tulip-shaped brackets are used to attach the roller shutter box to the fixed frame, then the connection is secure, but the assembly process becomes complex and time-consuming requiring numerous manual screwing operations
Solution Approach 1:
The fixing system is divided into separate modular components: a fixing bracket with mounting holes and a separate locking mechanism with a locking element. This segmentation allows each component to be optimized independently and assembled quickly without complex manual screwing operations, reducing assembly time while maintaining secure connection.
Solution Approach 2:
The fixing bracket is pre-assembled with the roller shutter box during manufacturing, with mounting holes and positioning features already in place. This preliminary action eliminates the need for complex on-site assembly operations, significantly reducing installation time while ensuring reliable connection through pre-positioned components.
2Ease of manufacture
If fixing brackets extend under the roller shutter box underside to engage with track upper ends, then the fastening function is separated from guidance function, but the design complexity increases
Solution Approach 1:
The fixing bracket is designed to perform multiple functions simultaneously: it provides fastening through the locking mechanism, guides the roller shutter box into proper position through its geometry, and attaches to both the box and the fixed frame. This multi-functionality eliminates the need for separate guidance and fastening components, reducing overall system complexity while maintaining ease of manufacture.
3Reliability
If numerous fixing screws are used to secure the roller shutter box to the fixed frame, then the attachment is secure, but the manual assembly process becomes tedious and prone to positioning faults
Solution Approach 1:
The complex manual screwing operation is extracted and replaced with a simple locking mechanism that uses a single locking element to secure the fixing bracket to the fixed frame. This extraction eliminates the need for multiple screws and manual tightening operations, making assembly easier and less prone to positioning faults while maintaining secure attachment.
Solution Approach 2:
The locking mechanism is designed to be self-aligning and self-securing. The locking element automatically engages with the fixing bracket features and secures itself without requiring precise manual positioning or multiple adjustment operations. This self-service characteristic eliminates positioning faults associated with manual screwing while maintaining reliable attachment.
Data Source
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Figure 3
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AI summary
Joinery of the type door or window equipped with a roller shutter box and assembly hardware for such joinery The invention relates to joinery (1) of the type door or window (2) comprising a fixed frame (3) onto which a roller shutter box (4) is attached by means of at least one assembly hardware (6, 6A) comprising first fixing means (7) comprising at least one hooking member (9) cooperating by interlocking with a complementary hooking member (10) which comprises second fixing means (8), some (7; 8) being attached to said fixed frame (3) and others (8;7) being made integral with the roller shutter box (4), this assembly fitting (6, 6A) further comprising locking means (25) associated with the first fixing means (7) and/or the second fixing means (8) and defined to occupy at least one locked position (26) and one unlocked position (27), these locking means (25) comprising a latch (28) mounted in rotation or translation on the first fixing means (7) or the second fixing means (8) to, by rotation or translation between the locked position (26) and the unlocked position (27), as the case may be, lock or conversely unlock the hooking element(s) (9) in the complementary hooking element(s) (10). The invention further relates to an assembly fitting for such joinery.