Hydraulic Shock Absorber Waveform Protrusion Damping Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hydraulic shock absorbing apparatuses face challenges in suppressing rippling on liquid surfaces and preventing the generation of air bubbles, which can lead to unstable damping forces during compression and expansion strokes.
Innovation Solution
A hydraulic shock absorbing apparatus with an annular protruding member between the inner and outer tubes, featuring a waveform or convex protrusions on the outer surface of the inner tube, which guides the oil flow and maintains a consistent gap with the inner tube, thereby suppressing rippling and air bubble formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fins are used to suppress rippling and prevent air bubble generation, then damping force stability is improved, but manufacturing complexity increases due to the need to form three-dimensional structures on cylindrical surfaces
Solution Approach 1:
The invention replaces traditional fin structures with a circumferential groove formed on the cylindrical surface of the inner tube or outer tube. This groove follows the curvature of the cylinder, allowing the shock-absorbing element to be formed as a simple rotational extrusion rather than a complex three-dimensional structure. The groove creates the necessary liquid surface disruption to suppress rippling and prevent air bubble generation while maintaining manufacturing simplicity through single-step forming processes.
Solution Approach 2:
The invention uses a circumferential groove pattern that can be replicated around the entire cylindrical surface through rotational symmetry. This allows the shock-absorbing element to be formed by copying the same groove profile multiple times around the circumference, significantly simplifying the manufacturing process compared to creating unique three-dimensional fin structures at multiple locations.
2Reliability
If complex shock-absorbing elements are formed on inner or outer tube surfaces, then liquid surface control is improved, but production time and cost increase
Solution Approach 1:
By forming the shock-absorbing element as a circumferential groove on the cylindrical surface, the invention enables production through rotational extrusion or single-step molding processes. This approach is inherently more efficient than creating complex three-dimensional structures, as it can be accomplished in a single manufacturing operation that naturally follows the cylindrical geometry, thereby maintaining high production efficiency while achieving effective liquid surface control.
Solution Approach 2:
The circumferential groove structure serves multiple functions simultaneously: it disrupts the liquid surface to suppress rippling, prevents air bubble generation, and can be formed as part of the basic tube manufacturing process. This multi-functionality eliminates the need for separate shock-absorbing components, reducing production steps and improving overall manufacturing efficiency.
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 effectively stabilizes the damping force by reducing rippling and air bubble generation, ensuring consistent performance during both compression and expansion strokes.
Implementation Method 1
A hydraulic shock absorbing apparatus with an annular protruding member between the inner and outer tubes, featuring a waveform or convex protrusions on the outer surface of the inner tube, which guides the oil flow
Implementation Method 2
maintains a consistent gap with the inner tube, thereby suppressing rippling and air bubble formation
Implementation Method 3
The solution effectively stabilizes the damping force by reducing rippling and air bubble generation, ensuring consistent performance during both compression and expansion strokes
Data Source
AI summary
A hydraulic shock absorbing apparatus includes: an inner tube; and an outer tube that is placed outside the inner tube, in which a space is defined between an outer circumferential surface of the inner tube and an inner circumferential surface of the outer tube, and a protruding portion protruding from the outer circumferential surface of the inner tube toward the outer tube or a protruding portion protruding from the inner circumferential surface of the outer tube toward the inner tube is provided in the space, and the protruding portion is formed over an entire circumference of the outer circumferential surface of the inner tube or the inner circumferential surface of the outer tube, and has a waveform when viewed from a direction crossing the outer circumferential surface or the inner circumferential surface.