Integrated Guide-Damping Sleeve for Piston Rod Assembly
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Solution Overview
Problem
Piston housing units lack improved functionality and robustness in guiding and damping piston rod displacement, with existing solutions often requiring complex designs and additional fitting elements.
Innovation Solution
A guide/damping unit integrating a guide element and a damping element, where the guide element is designed as a sleeve with linear sections and the damping element as a damping ring or strips, providing both guiding and damping functions within a single, uncomplicated and robust assembly, with a grease pocket for reliable operation and adjustable damping effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate guide elements and damping elements are used, then guiding and damping functions are achieved, but device complexity increases and assembly becomes more complicated
Solution Approach 1:
The guide element and damping element are merged into a single integrated guide/damping unit. The guide element features a through-bore for guiding the piston rod, while damping strips are directly attached to the guide element, eliminating the need for separate damping components and reducing assembly complexity.
Solution Approach 2:
The guide element serves multiple functions simultaneously: it provides guiding through the through-bore, supports damping strips for shock absorption, and includes mounting features for securing the assembly. This multi-functionality reduces the total number of components needed in the system.
2Reliability
If multiple separate components are used for guiding and damping, then functional requirements are met, but manufacturing cost and assembly time increase
Solution Approach 1:
The guide element and damping strips are combined into a pre-assembled unit that can be installed as a single component. The damping strips are secured to the guide element using simple attachment methods, allowing the entire guide/damping assembly to be mounted quickly without multiple separate installation steps.
3Reliability
If a robust guide/damping unit is implemented, then guiding and damping performance is improved, but the structure becomes more complex
Solution Approach 1:
The guide element features a through-bore with specific dimensional tolerances for precise guiding, while damping strips are applied locally at positions optimized for shock absorption. This localized functional differentiation achieves robust performance without requiring complex overall structure.
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 integrated guide/damping unit ensures effective guiding and damping of piston rod displacement, simplifies manufacturing and assembly, reduces costs, and allows for customizable damping effects, enhancing the overall functionality and durability of the piston housing unit.
Implementation Method 1
The damping element encloses the piston rod, in particular around its full circumference
Implementation Method 2
Thanks to the guide function the guide/damping unit acts similar to a sliding bearing or a guide bushing
Data Source
AI summary
A piston housing unit includes a housing with a longitudinal axis, a piston rod that is displaceable, in particular along the longitudinal axis and/or around the longitudinal axis, a guide/damping unit for guiding and damping the displacement of the piston rod.