Roller Shutter Rail Fastening for Thermal Expansion and Alignment
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Solution Overview
Problem
Existing roller shutter running rail fastening methods often hinder easy installation and removal, leading to potential misalignment and rolling issues due to positive locking mechanisms that can cause the rail to slip over time, especially during construction phases like plastering and painting.
Innovation Solution
A double form-fitting connection system that allows reversible attachment of the roller shutter running rail to both the roller shutter box and window frame, featuring a first form-fitting fastening that accommodates length changes and a second form-fitting fastening that prevents longitudinal movement, enabling easy assembly and disassembly without direct influence on the locking projections or receptacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a positive locking mechanism is used to secure the roller shutter running rail to the window frame, then the rail is firmly fixed and stable, but the rail cannot be easily removed for construction work like plastering and painting
Solution Approach 1:
The fastening system is divided into two separate form-fitting connections: a first connection that allows longitudinal movement for thermal expansion compensation, and a second connection that prevents longitudinal displacement. This segmentation enables the rail to be securely fixed during normal use while allowing easy removal by simply disengaging the two separate connection points.
2Stability of the object's composition
If the roller shutter running rail is firmly locked to prevent any movement, then alignment is maintained, but thermal expansion and contraction cannot be accommodated leading to potential damage
Solution Approach 1:
Different portions of the running rail have different fastening characteristics: the first form-fitting connection provides longitudinal freedom for thermal expansion, while the second form-fitting connection provides longitudinal restraint for alignment stability. This local differentiation of fastening properties allows the rail to simultaneously accommodate thermal changes and maintain proper alignment.
3Ease of operation
If a simple latching connection is used to allow easy installation and removal, then the rail can be easily detached for construction work, but the rail may slip downwards over time causing rolling problems
Solution Approach 1:
The first form-fitting connection is designed to be dynamically adjustable in the longitudinal direction, allowing the rail to move freely for thermal expansion while maintaining secure attachment. The second form-fitting connection provides static longitudinal restraint to prevent slippage. Together, they create a dynamic system that adapts to thermal changes while preventing harmful displacement, all while maintaining ease of installation and removal.
Data Source
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AI summary
The invention relates to a method for attaching a roller shutter track (13) relative to a roller shutter box (1) and a window or door frame (6), wherein the roller shutter track (13) is latched to a building-fixed support, preferably in the window frame (6), by means of a first bracket which is slidable in the direction of a longitudinal extension (L) of the roller shutter track (13) to accommodate a change in length (L). The invention further relates to a roller shutter track (13) latched to a window with a window frame (6) and associated with a roller shutter box (1) by means of a positive locking projection (29) and a positive locking receptacle (23), wherein a first positive locking fastening (22) on the window frame (6) allows movement by means of a change in length of the roller shutter track (13) relative to the window frame (6) in a longitudinal direction (L) of the roller shutter track (13).In order to specify such a method and a roller shutter guide rail in an improved manner, it is proposed with regard to the method that the roller shutter guide rail (13) is additionally reversibly connected to the roller shutter box (1) or the window frame (6) in a form-fitting manner to prevent displacement of the roller shutter guide rail (13) in the direction of the longitudinal extension (L).