Fastening Arrangement for Sample Holder Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sample holders and attachments for force measuring devices lack precision and reproducibility in aligning medical hollow bodies with the vertical axis, especially when testing multiple samples simultaneously, leading to inconsistent measurement results.
Innovation Solution
A fastening arrangement featuring a sample holder with a flat contact surface and a counter-holder with a flat counter-contact surface, along with positioning and fixing elements, ensures precise and reproducible alignment by allowing full-surface contact and complementary interaction between the elements, enabling quick and accurate interchangeability of samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional sample holders are used, then the device can test multiple samples, but the alignment precision with the vertical axis deteriorates
Solution Approach 1:
The sample holder design enables self-alignment through the interaction of the flat contact surface with the flat counter-contact surface and the positioning elements with counter-positioning elements. When the sample holder is placed on the counter-holder, the positioning elements automatically guide it into the correct position, ensuring precise alignment with the vertical axis without requiring external alignment tools or complex adjustment mechanisms.
Solution Approach 2:
The invention changes the geometric parameters of the contact surfaces and positioning elements to achieve precise alignment. The flat contact surfaces ensure full-surface contact for stability, while the specifically designed positioning elements (such as pins fitting into holes or complementary geometric shapes) transform the placement action into a self-aligning process that consistently achieves the required angular and positional precision.
2Productivity
If conventional sample holders are used, then samples can be changed, but the reproducibility of alignment deteriorates
Solution Approach 1:
The self-aligning mechanism through flat contact surfaces and positioning elements ensures that every time a sample holder is placed on the counter-holder, it automatically assumes the correct position and orientation. This eliminates variability in alignment between different sample changes, achieving high reproducibility while maintaining quick sample exchange capability.
Solution Approach 2:
The positioning elements and counter-positioning elements are pre-configured in fixed positions on the counter-holder and sample holder respectively. This preliminary arrangement of geometric features ensures that when the sample holder is placed, the alignment is automatically achieved without requiring adjustment or calibration during the sample change process, thus maintaining both speed and reproducibility.
3Adaptability or versatility
If conventional sample holders are used, then the setup can handle different hollow bodies, but the alignment accuracy deteriorates
Solution Approach 1:
The counter-holder with its flat counter-contact surface and positioning elements serves as a universal mounting interface that can accommodate different types of sample holders for various hollow bodies. The standardized interface ensures that regardless of the specific sample type, the alignment accuracy is maintained through the self-aligning mechanism of the contact surfaces and positioning elements.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a fastening arrangement (3) for fastening a sample holder (7) to a fuel metering device (1), having - a sample holder (7) and - a counterpart holder (5) which is associated with the fuel metering device and which is formed or arranged on the fuel metering device (1) or is fixedly connectable to the fuel metering device (1), wherein the counterpart holder (5) has at least one sample holder receptacle (19, 21), wherein - the sample holder (7) has a planar abutment surface (39) and the sample holder receptacle (19, 21) has a planar counterpart abutment surface (23), wherein - the sample holder (7) furthermore has at least one positioning element (41, 43) and one fixing element (45), and - the sample holder receptacle (19, 21) has at least one counterpart positioning element (25, 27) and one counterpart fixing element (29), wherein - the positioning element (41, 43) and the counterpart positioning element (25, 27) are configured to uniquely define a relative position between the sample holder (7) and the counterpart holder (5) together with the abutment surface (39) and the counterpart abutment surface (23), and wherein - the fixing element (45) and the counterpart fixing element (29) are configured to hold the sample holder (5) and the counterpart holder (5) against one another and force the abutment surface (39) and the counterpart abutment surface (23) against one another.