Roller Shutter Plate Fixing Device for Hollow Wall Attachment
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Solution Overview
Problem
Existing roller shutter fixing devices fail to securely attach the operating element to the hollow wall of the roller shutter casing, leading to repeated forces that tear the wall and cause the box to move or separate from the wall, rendering the operation of the shaft and apron non-functional.
Innovation Solution
A fixing device comprising a plate with holding means that temporarily secure the plate to the wall, including attachment and limiting mechanisms, and complementary fixing means that distribute forces over a larger area, ensuring stable attachment of the operating element to the wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fixing screws are used to attach the maneuvering element to the hollow wall, then the maneuvering element can be securely fixed, but the repeated forces tear the hollow wall and cause the box to move or separate from the wall
Solution Approach 1:
The fixing device is divided into a plate portion and a fixing means portion. The plate is inserted into the hollow wall through an opening, while the fixing means (screws or rivets) secure the plate from the external surface. This segmentation allows the plate to distribute forces internally while the fixing means provide secure attachment externally, preventing both wall tearing and box separation.
Solution Approach 2:
The fixing solution transitions from a single-surface attachment to a multi-dimensional approach. The plate extends into the hollow wall (internal dimension) while the fixing means attach from the external surface (external dimension). This dimensional transition allows simultaneous achievement of secure fixation and force distribution, resolving the contradiction between fixing strength and attachment reliability.
2Ease of operation
If the maneuvering element is fixed to the hollow wall, then the operating element can be securely mounted, but the box moves relative to the wall outside of its service position
Solution Approach 1:
The plate is pre-inserted into the hollow wall through an opening before the final fixing operation. This preliminary action positions the plate correctly within the wall structure, ensuring that when the fixing means are applied, the box is already properly positioned and will remain stable during operation, preventing movement outside service position.
3Strength
If fixing screws are used to attach the maneuvering element, then the element can be secured, but the operation of the shaft and apron becomes non-functional due to wall damage
Solution Approach 1:
The plate provides a localized reinforcement area within the hollow wall where the fixing forces are applied. Instead of the screws directly attacking the weak hollow wall structure, the plate creates a local quality enhancement at the fixation point, distributing the stress and preventing wall damage that would compromise shaft and apron functionality.
Data Source
Figure 1
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AI summary
The invention relates to an assembly comprising, on the one hand, at least one wall (3) of a roller shutter housing, this wall (3) having at least one opening (30; 30') and, on the other hand, a fixing device (1) for an operating element (2) of a roller shutter curtain on such a wall (3). This fixing device (1) has the form of a plate (4) comprising, on the one hand, retaining means (6) for holding the plate (4) in position relative to the wall (3) of the housing, temporarily and pending the final fixing of the operating element (2) on this wall (3) of the housing and, on the other hand, at least one additional fixing means (7), each configured to cooperate with a fixing means (8) cooperating with the operating element (2), for the purpose of the final fixing of this operating element (2) on the wall (3) of the housing.This assembly is characterized by the fact that the retaining means (6), on the one hand, cooperate with the edge of the opening (30; 30') of the wall (3) of the roller shutter box, in order to hold the plate (4) in position relative to this wall (3) of the box and, on the other hand, include at least one hooking means (60) for hooking the plate (4) onto the wall (3) of the box.