Tapered Insert Element Structure for Torque and Pullout Resistance
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Solution Overview
Problem
Existing insert elements are not reliably fastened within component openings and lack sufficient resistance to torque and pullout forces.
Innovation Solution
An insert element with a tapered hollow-cylindrical shaft and an annular groove with anti-rotation features, such as bead-like webs, is designed to securely fasten within a pre-punched component opening, enhancing torque resistance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the insert element is forced into a pre-punched component opening, then installation simplicity is improved, but fastening reliability deteriorates
Solution Approach 1:
The component opening is pre-punched to the appropriate size and shape before insert element installation. This preliminary preparation ensures proper fit and engagement geometry is already established, enabling both simple insertion and reliable fastening without compromising either aspect.
Solution Approach 2:
The insert element employs multiple geometric parameters including groove depth, projection height, and inclined surface angles, all optimized to achieve both easy insertion into the pre-punched opening and reliable fastening through proper material engagement.
2Strength
If the hollow cylindrical shaft tapers with inclined radial surfaces, then pullout resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The shaft incorporates controlled geometric parameter variations including taper angles and radial surface inclinations. These parameter changes are designed to be manufacturable while achieving the required pullout resistance, balancing performance improvement with manufacturing feasibility.
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 insert element provides reliable fastening and increased resistance to torque and pullout forces, ensuring secure mounting and connection of additional components.
Implementation Method 1
a radial outer side of the shaft wall extends radially inwardly in an inclined manner with respect to the central longitudinal axis, so that the hollow cylindrical shaft tapers
Implementation Method 2
an annular groove encompasses the hollow cylindrical shaft, the groove forming a triangular cross-sectional area
Implementation Method 3
anti-rotation features, such as bead-like webs
Implementation Method 4
anti-rotation features arranged around the pilot portion that resist rotation of the nut or the insert due to an applied torque
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
An insert element with a cylindrical base body comprising, along a central longitudinal axis and opposing one another, a fastening side for fastening the insert element to a component opening and a mounting side for mounting side of an add-on part, at the mounting side, a fastening bolt projects from the base body or a fastening opening having a fastening structure extends into the base body, the fastening side includes a hollow-cylindrical shaft coaxially to the central longitudinal axis of the base body having a circumferential shaft wall, wherein in a direction axially facing away from the base body, a radial inner side of the shaft wall extends parallel and a radial outer side of the shaft wall extends radially inwardly in an inclined manner with respect to the central longitudinal axis, so that the hollow cylindrical shaft tapers, and an annular groove encompasses the hollow cylindrical shaft, the groove forming a triangular cross-sectional area in an axial cut parallel to the central longitudinal axis.