Variable-Damping Shock Absorber With External Oil Discharge
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Solution Overview
Problem
Conventional shock absorbers experience heat degradation and reduced effectiveness due to repeated compression of damping oil, leading to inconsistent damping performance.
Innovation Solution
A shock absorber structure with variable damping, featuring an outer tube, piston, and shaft, including axial and lateral oil passages, a spring set, and adjustable damping regulating bolts, which control the flow of damping oil to achieve primary and secondary damping, enhancing shock absorption and adjustability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If damping oil is repeatedly compressed and mixed in the damping chamber, then shock absorption effect is achieved, but heat degradation occurs and damping oil consistency reduces
Solution Approach 1:
The patent extracts the damping oil from the closed damping chamber and introduces it to the external environment through the shaft's axial and lateral oil passages. This allows the damping oil to be discharged after each compression cycle, preventing heat accumulation and degradation from repeated compression and mixing within the sealed chamber.
Solution Approach 2:
The shaft acts as an intermediary component with integrated oil passages that mediate between the damping chamber and the external environment. The axial oil passage connected to lateral oil passages creates a conduit system that enables controlled discharge of damping oil, serving as a bridge between the internal damping mechanism and external dissipation.
2Device complexity
If conventional shock absorber structure is used, then simple structure is maintained, but damping consistency deteriorates due to heat degradation
Solution Approach 1:
The shaft is designed with multi-functionality, serving both as the mechanical connection element and as a fluid conduit system. The integrated axial and lateral oil passages in the shaft combine structural support with oil discharge functionality, achieving improved damping consistency without proportionally increasing overall structural complexity.
3Volume of stationary object
If damping oil is confined in the damping chamber, then compact design is achieved, but heat dissipation and oil degradation occur
Solution Approach 1:
The patent extracts the damping oil from the confined damping chamber environment and discharges it externally through the shaft's oil passage system. This extraction mechanism allows heat energy to be dissipated outside the compact chamber volume, preventing heat buildup while maintaining the compactness of the main body 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 structure provides improved stability and adjustability in shock absorption by effectively managing damping oil flow, reducing heat-related degradation and maintaining consistent performance.
Implementation Method 1
the cushioning spring of the spring set rebounds and pushes the piston fitting cover of the cushioning piston cover set, simultaneously, the auxiliary spring pushes the piston fitting cover and the piston to perform a relative displacement action
Implementation Method 2
the damping oil flows in the damping chamber of the outer tube in correspondence with the pressed piston and the plurality of oil guiding passages therein
Data Source
AI summary
The present invention relates to a shock absorber structure with variable damping, comprising an outer tube, a piston, a shaft, a plurality of spring sets, a cushioning piston cover set, an inlet regulating bolt, and a damping regulating bolt, wherein the outer tube is filled with damping oil. The shaft drives the piston by moving to the upper dead center to produce a primary damping of cushioning, and the cushioning piston cover set and the inlet regulating bolt produce a secondary damping of cushioning to achieve the effect of variable damping. When the shaft reaches the lower dead center, the spring set rebounds and pushes the cushioning piston cover set and the piston for displacement to achieve the cushioning state with variable damping and improve the overall shock absorption and cushioning effect.