Blind Rivet Element With Deformation Sections For Stiffening
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Solution Overview
Problem
Existing methods for setting blind rivet elements require significant production and setting effort, and are limited in their application across different distances and wall thicknesses, necessitating adjustments in dimensions for various scenarios.
Innovation Solution
A method involving a blind rivet element with specific deformation sections that form closing and setting heads upon deformation, allowing for stiffening of spaced sections without the need for additional screw connections, enabling use across varying distances and wall thicknesses with the same shank dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional screw connections are used to stiffen spaced sections, then stiffening effectiveness is improved, but production effort and device complexity increase
Solution Approach 1:
The patent combines the stiffening function with the blind rivet element itself by integrating deformation sections that form closing heads directly on the rivet shank. This eliminates the need for separate screw connections, as the deformation sections create clamping force between the spaced sections while the rivet is being set, thereby merging two functions into one component.
Solution Approach 2:
The blind rivet element performs its own stiffening function through its deformation sections that form closing heads during the setting process. The rivet automatically creates the clamping force needed to stiffen the spaced sections without requiring additional fastening operations or separate components, making the system self-sufficient.
2Adaptability or versatility
If blind rivet element dimensions are adjusted for different distances and wall thicknesses, then application versatility is improved, but manufacturing and warehousing complexity increase
Solution Approach 1:
The patent introduces deformation sections with wall weakenings that can be activated at different positions along the shank during the setting process. The tool can control the sequential deformation of these sections, allowing a single rivet element design to adapt to various installation conditions (different distances and wall thicknesses) by dynamically forming closing heads at appropriate locations rather than requiring multiple fixed-dimension variants.
Solution Approach 2:
The patent changes the physical state and geometry of the shank through controlled deformation of sections with predetermined wall weakenings. By varying the deformation parameters (which sections are deformed, to what extent, and in what sequence), a single rivet element can accommodate different installation scenarios without requiring multiple designs with different dimensional parameters.
3Strength
If multiple deformation sections are integrated into the blind rivet element, then stiffening capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent divides the shank into multiple discrete deformation sections, each with its own wall weakening feature at a specific location. This segmentation allows each deformation section to be independently controlled during setting, and the wall weakenings provide natural initiation points for deformation that reduce sensitivity to manufacturing tolerances. Each segment can be activated as needed based on installation conditions.
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
This method allows for efficient stiffening of spaced sections with reduced production and setting effort, enabling use across a wide range of distances and wall thicknesses without the need for additional screw connections, thus optimizing production and warehousing efficiency.
Implementation Method 1
a first deformation section between the internal thread or the connection section for the threaded stud and the head section, wherein a wall of the shank has a weakening in the region of the first deformation section, to form a first closing head on a side of one section of the two sections facing away from the head section after deformation of the first deformation section
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
The invention relates to a blind rivet element (1) for stiffening two spaced-apart sections of two components or of a single component, and to a method for setting the blind rivet element (1). The blind rivet element (1) has a head section (2) and a shank (3) adjoining the head section (2) in an axial direction (Z) of the blind rivet element (1). The shank (3) has an internal thread (4) or a connecting section for a threaded bolt and, between the internal thread (4) or the connecting section and the head section (2), a first deformation section (5), wherein the head section (5) has a larger outer diameter (D1) than the shank (3). A wall (6) of the shank has a weakening in the region of the first deformation section (5) to form a first closing head on a side of one section facing away from the head section (2) after deformation of the first deformation section (5).The shaft (3) has a second deformation section (9), wherein the wall (6) of the shaft (3) has a weakening in the region of the second deformation section (9) to form a setting head on a side of the other section facing away from the head section (2) after deformation of the second deformation section (9), wherein the internal thread (4) or the connecting section for the threaded bolt is formed between the first deformation section (5) and the second deformation section (9). The shaft (3) has athe connecting section for the threaded bolt and the second deformation section (9) has a third deformation section (11), wherein the wall (6) of the shaft (3) has a weakening in the area of the third deformation section (11), to form a second locking head on a side of the other section facing the head section (2) after deformation of the third deformation section (11).