Hydraulic Shock Absorber Piston Ring with Spring-Biased Pressure Plates
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Solution Overview
Problem
Existing hydraulic shock absorbers require precise matching of conic surfaces for effective shock absorption, leading to high design and manufacturing costs and potential bottoming out issues.
Innovation Solution
A hydraulic shock absorber design featuring a piston unit with flow channels and a piston ring that includes pressure plates with spring bias, allowing for axial play and adjustable damping characteristics, along with a multi-part piston ring for improved adaptability and sealing, and an electromagnetic damping adjustment unit for software-controlled damping adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conic surfaces of piston element and ring element are matched for good shock absorption, then damping performance is improved, but design and manufacturing cost increases hugely
Solution Approach 1:
The invention changes the geometric parameters of the piston element by providing either a conical outer surface or an annular conical surface instead of requiring both conical surfaces to be matched. This parameter modification maintains the progressive damping effect while significantly simplifying the manufacturing process and reducing costs.
2Ease of operation
If conic surfaces are precisely matched for good response behaviour, then damping characteristics are improved, but manufacturing complexity increases
Solution Approach 1:
The invention modifies the geometric parameters by providing the conical shape on only one surface (either the piston element outer surface or the ring element inner surface), reducing the number of surfaces that require precise matching while maintaining the progressive damping response behavior.
3Stability of the object's composition
If rigid piston design is used for stable damping, then damping consistency is improved, but adaptability to temperature changes decreases
Solution Approach 1:
The invention incorporates a flexible ring element that can axially displace relative to the piston element, allowing the damping characteristics to adapt to temperature-induced viscosity changes in the damping fluid while maintaining stable operation through the flexible sealing and flow control mechanism.
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 enhances shock absorption and damping behavior, prevents bottoming out, and allows for adaptable damping characteristics, improving the hydraulic shock absorber's response and service life.
Implementation Method 1
a pressure plate which comprises pressure plate flow channels and is resiliently biased against the piston unit by way of a spring force
Implementation Method 2
a flow path for the throttled flow of the damping fluid between the two workings spaces through the piston member flow channels and the pressure plate flow channels of the pressure plate at the other side can be released
Data Source
AI summary
A hydraulic shock absorber including a housing and an absorber unit. The absorber unit is movable relative to the housing in the axis direction of an absorber unit middle axis A-A and includes a piston which is arranged on a piston rod and which subdivides the housing into a first and a second working space which is filled with damping fluid.