Coaxial Threaded Bushing Assembly for One-Sided Tolerance Compensation
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Solution Overview
Problem
Existing tolerance compensation arrangements require both components to be accessible from both sides for installation and mounting, and the base element must be thicker than the component it is fastened to, limiting their application in scenarios where accessibility is restricted.
Innovation Solution
A component design featuring a base bushing and a fastening bushing with opposite thread directions, arranged coaxially, allowing for tolerance compensation without requiring both components to be accessible from both sides, and enabling the bushings to be integrated or separate for varying applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional tolerance compensation arrangement with base element and adjusting element is used, then tolerance compensation function is achieved, but both components must be accessible from both sides for installation
Solution Approach 1:
The invention divides the traditional single base element into two separate bushing elements: a base bushing and a fastening bushing. These segmented elements can be installed independently, allowing the fastening bushing to be positioned within the component thickness while the base bushing extends outward for adjustment operations, thereby eliminating the requirement for dual-sided accessibility.
Solution Approach 2:
The invention transitions from a single-element axial arrangement to a multi-element configuration where the fastening bushing is embedded within the component thickness (internal dimension) while the base bushing protrudes outward (external dimension). This dimensional redistribution allows the adjusting element to be accessed from one side only, solving the accessibility constraint.
2Reliability
If the base element is made taller than the component thickness to accommodate adjusting element, then tolerance compensation is enabled, but the base element cannot be fully integrated into thin-walled components
Solution Approach 1:
By segmenting the base element into base bushing and fastening bushing, the fastening bushing can be fully integrated within the component thickness while the base bushing extends outward only as much as needed for adjustment. This segmentation enables the arrangement to be adapted to thin-walled components where the fastening bushing fits within the available thickness.
Solution Approach 2:
The invention applies different functional qualities to different parts: the fastening bushing is designed for integration within the component (local integration quality), while the base bushing is designed for outward extension and adjustment access (local access quality). This local differentiation allows adaptation to various component thicknesses including thin-walled applications.
3Adaptability or versatility
If separate base element and fastening element are used, then flexibility in installation is improved, but the number of components and assembly steps increases
Solution Approach 1:
The invention merges the base element and fastening element into a unified bushing assembly where the base bushing and fastening bushing are positioned coaxially and work together as an integrated system. This merging reduces the number of separate components compared to traditional arrangements while maintaining installation flexibility through the modular bushing design.
Data Source
AI summary
A component has a base bushing, which has a first axial end and an opposite second axial end and a first inner diameter, wherein the base bushing is equipped with a first internal thread with a first thread direction, and has a fastening bushing, which has a third axial end and an opposite fourth axial end and a second inner diameter. The fastening bushing is equipped with a second internal thread with a second thread direction which is opposite to the first thread direction, wherein the second inner diameter is smaller than the first inner diameter and the base bushing and the fastening bushing are separate elements and are arranged coaxially with respect to one another in the component. Alternatively, the base bushing and the fastening bushing are formed as a single piece.