Tolerance-Compensating Sleeve and Blind Rivet Joint Against Loosening
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Solution Overview
Problem
Existing attachment arrangements with automated tolerance compensation systems are prone to loosening due to mechanical stresses, leading to reduced connection strength and aesthetic issues when reconnecting components.
Innovation Solution
A connection method using a compensating sleeve with an outer thread and a blind rivet that provides non-automated tolerance compensation, ensuring a secure and stable connection by forming a frictional or positive connection between components, which is less susceptible to mechanical stresses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automated tolerance compensation systems using fastening bolts are used, then the connection can be easily assembled and disassembled, but the connection is prone to loosening due to mechanical stresses such as vibrations
Solution Approach 1:
The connection system is divided into two functional parts: a compensating element for tolerance adjustment and a blind rivet for secure fastening. The compensating element with threaded bore allows axial adjustment to compensate for tolerances, while the blind rivet provides vibration-resistant securement. This segmentation allows each component to perform its specific function optimally.
Solution Approach 2:
The compensating element is first adjusted axially to compensate for tolerances between components before the blind rivet is set. This preliminary adjustment ensures that the connection geometry is optimized before final securement, preventing loosening while maintaining ease of assembly.
2Ease of manufacture
If fastening bolts are used for automated tolerance compensation, then the system is detachable and easy to assemble, but the connection strength and aesthetic appearance deteriorate after loosening and reconnection
Solution Approach 1:
The system separates the adjustment function (compensating element) from the securement function (blind rivet). The blind rivet provides permanent, high-strength securement that maintains connection integrity, while the compensating element handles the adjustment task. This segmentation allows easy assembly through adjustment without compromising final connection strength.
Solution Approach 2:
The compensating element acts as a temporary, adjustable component that is later permanently secured by the blind rivet. The blind rivet, once set, provides permanent securement that maintains connection strength, while the compensating element's adjustment function is completed during assembly.
3Reliability
If a blind rivet is used to secure the compensating element, then the connection becomes resistant to mechanical stresses and vibrations, but the device complexity increases
Solution Approach 1:
The blind rivet combines multiple functions: it secures the compensating element to the first component, maintains the compensated position, and provides vibration resistance. By merging these functions into a single component, the overall device complexity is minimized while achieving high reliability.
Solution Approach 2:
The blind rivet is self-setting and self-securing, requiring no additional fastening operations or complex locking mechanisms. Once inserted and set, it automatically provides vibration-resistant securement, simplifying the overall device structure while maintaining high reliability.
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 solution provides a reliable and stable connection that is less affected by mechanical stresses, maintaining precision and strength, and is more aesthetically pleasing by using a blind rivet that is not easily detachable, thus preventing loosening and ensuring a secure fit between components.
Implementation Method 1
an outer thread (14) on a radial outer side, which is formed to fit a mating thread of a hole (30) of the first component (A)
Implementation Method 2
ensuring a secure and stable connection by forming a frictional or positive connection between components
Implementation Method 3
a blind rivet which is not nondestructively detachable or releasable is attached in the through connection tube
Data Source
AI summary
A connection between at least a first component A and a second component B with an attachment arrangement with tolerance compensation between the first component A and the second component B. The entire connection is fixated via a blind rivet which is not nondestructively detachable while a compensating sleeve spans a distance between the first component A and the second component B.