Masonry Window Sill Fastening Device
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Solution Overview
Problem
Existing methods for attaching window sills to masonry often damage the masonry or mortar, leading to leaks and structural issues due to the need to insert screws directly into the masonry.
Innovation Solution
A device comprising a carrier plate inserted into a layer joint below the top layer of masonry, with a receiving device projecting at a right angle from the carrier plate, allowing fastening elements to be inserted without damaging the masonry. The receiving device is accessible from the top and is secured by the carrier plate, which can be made of various materials and configurations to fit different masonry formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are inserted directly into the masonry to attach the window sill, then the window sill can be securely fastened, but the masonry or mortar layers are damaged leading to leaks
Solution Approach 1:
The fastening system is divided into separate components: a carrier plate that spans the mortar layer and distributes loads, and individual receiving devices that provide screw mounting points. This segmentation allows the window sill to be fastened securely without concentrating stress at single penetration points in the masonry.
Solution Approach 2:
The carrier plate acts as an intermediary element between the window sill and the masonry structure. It spans across the mortar layer and distributes fastening forces across multiple bricks, eliminating the need for direct screw insertion into the masonry and preventing mortar damage and leaks.
2Object-affected harmful factors
If a carrier plate is inserted into a layer joint to provide support, then the structure is protected from damage, but the device complexity increases
Solution Approach 1:
The carrier plate serves multiple functions simultaneously: it spans the mortar layer to distribute loads, provides a mounting surface for receiving devices, and anchors the window sill assembly to the masonry structure. This multi-functionality reduces the need for separate protective and fastening components.
Solution Approach 2:
The solution moves from a one-dimensional approach (direct vertical screw insertion) to a two-dimensional approach (carrier plate spanning horizontally across the mortar layer with vertical receiving devices). This dimensional change allows force distribution across multiple bricks while maintaining protection from mortar damage.
3Ease of operation
If the receiving device is made accessible from the top side of the masonry, then installation is simplified, but the carrier plate must extend through multiple layers reducing its span
Solution Approach 1:
The carrier plate is pre-installed in the layer joint during masonry construction, and the receiving devices are pre-mounted on the carrier plate. This preliminary action allows the receiving devices to be easily accessible from the top side during window sill installation without requiring the carrier plate to extend through multiple additional layers.
Data Source
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AI summary
The invention relates to a device for arranging a receiving device (20) for at least one fastening means of a window sill fastening in masonry (10), in particular in facing masonry such as clinker masonry, having a support plate (30) which can be arranged in the layer joint (13) below the uppermost layer (12) as seen from the upper side (11) of the bricks (16). Furthermore, a receiving device (20) is provided which is arranged on the support plate (30) and projects approximately at a right angle from the surface of the support plate (30). The invention proposes that the support plate (30) have a flat and planar shape whose length is greater than its width, and that the receiving device (20) is arranged centrally on the support plate (30), both in terms of the length and the width of the support plate (30).The invention further relates to an assembly comprising at least one device for arranging a receiving device (20) for at least one fastening means of a window sill fastening in a masonry (10) and a masonry, in particular a facing masonry such as clinker masonry. The window sill fastening can be mounted on an upper side (11) of the masonry (10), in particular in the region of a window recess in the masonry (10), wherein the masonry (10) consists of masonry bricks (16) arranged in layers, wherein individual layers are connected to one another by layer joints (13) and individual masonry bricks (16) of a layer are connected to one another by butt joints (14), wherein the joints (13, 14) can be provided with mortar (17).The invention proposes that the support plate (30) of the device can be arranged in the layer joint (13) below the uppermost layer (12) as seen from the upper side (11) of the bricks (16) and that the receiving device, during assembly, passes through a butt joint (14) in the uppermost layer (12) of the brickwork (10) and is accessible from the upper side (11) of the brickwork (10) (Fig. 2).