Cylinder Piston Assembly Stroke Adjustment Mechanism
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Solution Overview
Problem
The existing cylinder-and-piston assemblies for bottle attachment apparatuses face challenges in accurately adjusting the stroke length stop due to parallax effects and the need for extensive loosening, which complicates the selection of the correct volume and can lead to misalignment and tilting of components.
Innovation Solution
The cylinder-and-piston assembly features a rotationally fixed indicator element with a locking mechanism that prevents extraction from the longitudinal slot, allowing for precise adjustment and minimizing parallax errors, along with a threaded bolt and counter bearing system that ensures secure interlocking and prevents reverse displacement, enhancing the stability and accuracy of the stroke length stop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stroke length stop is made adjustable in the longitudinal direction to enable volume selection, then the adaptability of the apparatus is improved, but the complexity of the adjustment mechanism increases and measurement precision deteriorates due to parallax effects
Solution Approach 1:
The patent uses an optical copy system where a light source illuminates the stroke length stop and a camera captures the position. This optical copying mechanism eliminates parallax errors by removing the need for direct visual reading, thereby maintaining measurement precision while enabling adjustable volume selection.
Solution Approach 2:
The patent replaces the traditional mechanical reading system (requiring visual alignment and manual reading) with an automated optical-electrical system using light sources and cameras. This substitution eliminates parallax effects and improves measurement precision while maintaining the adjustable functionality.
2Ease of operation
If the indicator element is made movable for adjustment, then the ease of operation is improved, but the stability of the indicator element position deteriorates leading to misalignment and tilting
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the stroke length stop can be freely moved along the longitudinal axis during adjustment, then locked into position. This dynamic system allows easy operation during adjustment while maintaining stability when positioned, resolving the contradiction between ease of operation and position stability.
Solution Approach 2:
The patent separates the adjustment function from the indication function. The stroke length stop can be adjusted independently without affecting the indicator element's stability during operation. The indicator element remains stable for accurate reading while the stroke length stop provides adjustable functionality, extracting the adjustment capability from the indication system.
3Adaptability or versatility
If extensive loosening is required for adjustment, then the adaptability of the mechanism is improved, but the loss of time during adjustment increases
Solution Approach 1:
The patent divides the adjustment mechanism into modular components with independent adjustment capabilities. The stroke length stop can be adjusted separately without requiring extensive loosening of other components. This segmentation allows for quick, targeted adjustments that maintain adaptability while minimizing adjustment time.
Data Source
AI summary
A cylinder-and-piston assembly for a bottle attachment apparatus for handling liquids provides a cylinder attachable to a valve block assembly, a piston, displaceable in a sealed manner in the longitudinal direction within the cylinder, and a cylinder housing connected to the piston and externally encompassing the cylinder. The piston is displaceable in the cylinder and the stroke length of the piston in the cylinder is delimited by a fixed stop, which interacts with a stroke length stop on the cylinder housing. The cylinder housing has a longitudinal slot running in the longitudinal direction and on the external side thereof has a scale assigned to this longitudinal slot. The stroke length stop on the cylinder housing is adjustable in the longitudinal direction and is interlockable in the respective position.