Building Body Mounting Assembly for Hole-Alignment-Free Fastening
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Solution Overview
Problem
Existing fastening methods for building structures require precise alignment of holes in the building structure and support element, leading to complexity and potential gaps or thermal bridges.
Innovation Solution
A fastening device with a spacer element and a fastening element, where the spacer element is attached to a support surface with a fixing element, and the fastening element creates a force-locking connection through a guide part or hole-free area, allowing for precise alignment and reduced thermal bridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fastening elements are used requiring precise hole alignment, then secure connection is achieved, but the complexity of the fastening process increases and manufacturing precision requirements worsen
Solution Approach 1:
A guide element is introduced as an intermediary component between the building structure and the support element. This guide element features a through-hole that receives the fastening element, eliminating the need for precise alignment between holes in the building structure and support element. The guide element mediates the connection, providing both alignment guidance and structural support during the fastening process.
Solution Approach 2:
The guide element is pre-installed in the building structure before the fastening operation. This preliminary action establishes the correct positioning and alignment path for the fastening element, so that when the fastening element is inserted through the guide element's through-hole, precise alignment is automatically achieved without requiring complex coordination during the fastening process itself.
2Reliability
If traditional fastening methods are used, then connection is achieved, but thermal bridges are created reducing insulation performance
Solution Approach 1:
The guide element is designed with differentiated local properties: the portion embedded in the building structure and the portion extending to the support element are optimized for different functions. The guide element provides mechanical connection stability where needed while incorporating thermal insulation characteristics in regions where thermal bridge prevention is critical, thus achieving both connection reliability and thermal performance.
3Reliability
If precise hole alignment is required, then secure fastening is achieved, but the time and precision required for manufacturing and installation increases
Solution Approach 1:
The guide element serves as a mediator that absorbs the alignment tolerance requirements. Instead of requiring precise alignment between the building structure and support element holes, the guide element's through-hole provides a predetermined alignment path that guides the fastening element, thereby eliminating the need for high manufacturing precision in the alignment of component holes.
4Measurement precision
If multiple alignment steps are performed, then accurate positioning is achieved, but the installation time increases reducing productivity
Solution Approach 1:
The guide element is pre-installed with predetermined positioning features that automatically establish correct alignment when the fastening element is inserted. This preliminary action eliminates the need for multiple alignment steps during installation, as the guide element's through-hole and positioning features guide the fastening element into the correct position in a single operation, thereby maintaining positioning accuracy while significantly reducing installation time.
Data Source
Figure 1~1b
Figure 1a
Figure 2~3
AI summary
The present invention relates to a device (10) for fastening a building body (16) in relation to an opening (40) bounded by a support surface (12), comprising at least one spacer element (14) attachable to the support surface (12) and a fastening element (20) provided with a head (18), wherein the spacer element (14) has a guide part (22) which can be inserted into a passage (24) of the building body (16) during pre-assembly of the device (10). According to the invention, the guide part (22) has a through-hole (30) in a longitudinal axis (26) and the fastening element (20) is dimensioned such that, after assembly of the device (10) in the guide part (22), the fastening element (20) extends into the through-hole (30) to enable a force-fit connection between the spacer element (14) and the building body (16).The present invention further relates to a method (100) for fastening a building body (16) with the device (10) according to the invention.