Hydraulic Shock Absorber Damping for Short-Stroke Hardness Control
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Solution Overview
Problem
Current shock absorbers with hydraulic damping mechanisms face challenges in responding to short stroke distances and adjusting hardness levels, leading to increased production complexity and costs due to complex structures.
Innovation Solution
A shock absorber design featuring a hollow cylindrical liner, a shaft with a piston arm, and a hydraulic damping mechanism with a connection element and piston that adjusts lubricant passage paths through channels and stages, allowing for adjustable hardness and efficient short stroke responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pluralities of hydraulic damping mechanisms are added into shock absorbers to respond in short stroke distances, then the response speed is improved, but the device complexity increases
Solution Approach 1:
The hydraulic damping mechanism is segmented into multiple staged passages (first stage, second stage, third stage) with different flow resistance characteristics. Each stage handles different flow rates, enabling the system to respond effectively to short stroke distances while maintaining a relatively simple overall structure through functional division rather than adding multiple complete damping mechanisms.
2Strength
If the shock absorbers are made hard to increase road holding and handling, then the road holding is improved, but the comfort of the vehicle decreases
Solution Approach 1:
The shock absorber employs a dynamic damping mechanism where the hardness level is not fixed but varies according to operating conditions. The staged passages with different flow resistances allow the damping force to adapt automatically - providing higher damping (harder) for road holding during certain conditions and lower damping (softer) for comfort during others, thus resolving the contradiction between road holding and comfort.
Solution Approach 2:
The system changes the flow resistance parameter through the staged passages design. By providing multiple passages with progressively different resistance characteristics, the effective damping parameter can be adjusted based on the operating state, allowing the shock absorber to maintain optimal road holding while preserving vehicle comfort.
3Reliability
If complex structures are used in the shaft and body of hydraulic damping mechanisms, then the damping performance is improved, but the manufacturing cost increases
Solution Approach 1:
Instead of using a single complex shaft and body structure, the invention segments the damping function into multiple simpler passages (first, second, and third stages) with progressively different flow resistance characteristics. This segmentation allows each component to have a simpler geometry while collectively achieving the desired complex damping performance, thereby reducing manufacturing difficulty and cost.
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 design enables effective adjustment of hardness levels and improved responsiveness to short stroke distances, simplifying production and reducing costs by utilizing a more straightforward structure for the hydraulic damping mechanism.
Implementation Method 1
the shaft, which is in connection to the piston arm entering into a body, presses the lubricant inside the body and a damping is provided
Implementation Method 2
providing a vacuum condition in the return thereof
Implementation Method 3
having a difference between the inner diameter of the piston and the outer diameter of the shaft so as to define a lubricant passage path
Data Source
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AI summary
The subject matter invention is a shock absorber (10) having a liner (12); a shaft (21) which is in connection to a piston arm (14) providing a press condition (a) by advancing from one end of said liner (12) towards the other end thereof and providing a vacuum condition (b) in the return thereof; and a hydraulic damping mechanism (20) having a body (24) wherein said shaft (21) enters and which is provided in the liner (12), characterized by comprising a connection element (23) which is provided at the end of said shaft (21) and having a head part (231) with a width so as to protrude from the shaft lateral surface (213); and a hollow cylindrical piston (22) which is embodied so as to move between said head part (231) and a protrusion (211), which is provided on the shaft (21), in said press (a) and vacuum (b) conditions and having a difference between the inner diameter of the piston (22) and the outer diameter of the shaft (21) so as to define a lubricant passage path.