Insulation Spacer With Milling Device And Conical Taper
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Solution Overview
Problem
Existing spacers for attaching objects to substrates with insulating layers are inadequate for high loads, as they require reinforcement of components, which is not feasible due to space constraints in the insulation layer, and can cause damage to the plaster layer under radial forces.
Innovation Solution
A spacer with a milling device on its outer circumference that expands the bore for the anchor bolt, allowing for easy assembly and adjustment, and a conical taper to prevent damage to the plaster layer, along with a grub screw for securing against twisting, ensuring stability and minimizing thermal bridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the spacer sleeve diameter is increased to handle higher loads, then the load-bearing capacity is improved, but the available space in the insulation layer is insufficient
Solution Approach 1:
The milling device performs preliminary expansion of the bore in the insulation layer before the spacer sleeve is installed. This pre-expansion allows the spacer sleeve to achieve its full diameter and load-bearing capacity without requiring additional space during installation, as the space is created in advance by the milling action of the device
Solution Approach 2:
The milling device is integrated within the spacer sleeve structure, with the milling teeth formed on the outer circumference of the spacer sleeve itself. This nested configuration allows the milling function to be incorporated without adding separate external components that would increase the overall space requirement
2Adaptability or versatility
If the anchor bolt is allowed to bend under radial forces, then the spacer can accommodate movement, but damage to the plaster layer occurs
Solution Approach 1:
The conical outer contour of the spacer sleeve is designed to provide beforehand cushioning by creating a gradual transition zone in the insulation layer. This conical shape absorbs and distributes radial forces before they can be transmitted to the plaster layer, preventing damage while still allowing the anchor bolt to accommodate movement
3Loss of energy
If the spacer components are made of plastic to maintain thermal insulation, then thermal conductivity is reduced, but the strength and stability decrease
Solution Approach 1:
The spacer system uses composite material construction where the spacer sleeve and counter device are made of plastic for thermal insulation, while the anchor bolt provides the necessary structural strength. This combination allows each component to be made from materials optimized for its specific function, achieving both thermal insulation and structural integrity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The spacer effectively handles higher loads without damaging the plaster layer and simplifies the assembly process, while maintaining thermal insulation by using plastic components for the sleeve and counter devices, ensuring secure fastening and reduced thermal conductivity.
Implementation Method 1
The spacer (7) has a spacer sleeve (9) with a milling device (14) on its outer circumference. By rotating the spacer sleeve (9), the originally cylindrical bore for the anchor bolt (8) can be greatly expanded in the area where the spacer sleeve (9) will later be arranged
Implementation Method 2
The spacer sleeve (9) preferably has an outer contour that tapers conically in the direction of the anchor bolt (8). This promotes the widening of the cylindrical bore in the insulation layer, which is aligned with the anchor bolt (8), through the spacer sleeve (9)
Implementation Method 3
In order to reduce the formation of a thermal bridge between the object to be fastened and the substrate as far as possible, the invention proposes designing the spacer sleeve (9) and the counter device, if present, as plastic parts
Data Source
Figure 1~2
AI summary
The spacer bush (9) includes a cutter (14) on its external circumference. The bush and anchor bolt (8) are secured against relative rotation in various axial positions. The spacer includes a grub screw (10) acting axially against the anchor bolt. The spacer has an external conical taper extending to the anchor bolt. It also includes a recess (16) for a tool and a tapped bore (19) for a fastening screw (13). There is a reduction in spacer diameter at the end remote from the anchor bolt. An independent claim is included for the corresponding method of fastening.