Shock Absorber Leaf Valve Rib for Damping Force
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Solution Overview
Problem
Existing shock absorbers require complex configurations to apply initial deflection to leaf valves and form orifices, leading to a complicated structure.
Innovation Solution
A shock absorber design featuring a valve disc with a rib on the first leaf valve that is recessed on one side and projects on the other, allowing initial deflection and orifice formation without additional components, simplifying the structure by integrating these functions into a single feature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If separate configurations are provided for applying initial deflection to leaf valves and for forming orifices, then the damping force generation is improved, but the structure becomes complicated
Solution Approach 1:
The patent combines the functions of applying initial deflection to leaf valves and forming orifices into a single integrated configuration. The first leaf valve is designed with a specific structure that simultaneously serves both purposes, eliminating the need for separate components and reducing structural complexity while maintaining effective damping force generation across different piston speed regions
Solution Approach 2:
The first leaf valve is designed as a multi-functional component that performs multiple roles: it acts as a damping element, receives initial deflection, and forms orifices for fluid flow. This universal design allows a single component to fulfill what would traditionally require multiple separate elements, thereby simplifying the overall shock absorber 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
This design enables the application of initial deflection and orifice formation with a simpler structure, enhancing damping force generation across varying piston speeds while reducing complexity.
Implementation Method 1
The first leaf valve stacked on the valve disc is provided such that an outer peripheral part is seatable on and separable from the valve seat, and includes a rib recessed on a valve disc side and projecting on an opposite valve disc side at a position facing the valve seat
Implementation Method 2
When the piston speed is in the low-speed region, the working fluid passes through a known orifice formed by cuts provided on the leaf valves and a groove provided on the valve seat. Thus, the shock absorber can generate a damping force resulting from the resistance of the orifice
Implementation Method 3
the leaf valves, the inner leaf valve and the outer leaf valve serve as damping force generation means for applying resistance to working fluid passing in the flow passage
Data Source
AI summary
A shock absorber includes a valve disc defining two chambers, a flow passage formed in the valve disc, the flow passage allowing communication between the two chambers, a window formed in the valve disc, the window being connected to the flow passage, a valve seat formed on the valve disc, the valve seat surrounding the outer periphery of the window; and a plurality of leaf valves formed in the shape of annular plates, the plurality of leaf valves being stacked on the valve disc. The first leaf valve stacked on the valve disc is provided such that an outer peripheral part is seatable on and separable from the valve seat, and includes a rib recessed on a valve disc side and projecting on an opposite valve disc side at a position facing the valve seat.