Fluid Control Valve Sleeve Assembly With Integrated Filter Stopper
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Solution Overview
Problem
Conventional fluid control valve units have complex structures, numerous components, and complicated assembly processes, leading to potential component detachment and increased costs, with foreign matter entry risks.
Innovation Solution
A simplified fluid control valve unit design featuring a sleeve with an integrated metal plate spring filter and snap ring stopper, reducing components and assembly complexity while ensuring reliable positioning and preventing foreign matter entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fluid control valve unit uses a check valve with a ball valve body, coil spring, and separately fixed filter and seal member, then the valve can function properly, but the structure becomes complex, the number of components increases, and the assembly process becomes complicated
Solution Approach 1:
The patent combines the filter and seal member into a single integrated filter-seal member component. The filter portion filters fluid while the seal member portion seals between the sleeve and valve body, eliminating the need for separate filter and seal member components. This merging reduces component count and assembly complexity while maintaining proper valve functionality.
Solution Approach 2:
The integrated filter-seal member serves multiple functions simultaneously: it acts as both a filter to clean the fluid and a seal member to prevent leakage between the sleeve and valve body. This multi-functionality reduces the overall number of components needed in the valve assembly while ensuring reliable operation.
2Reliability
If a conventional fluid control valve unit uses a fixing member pressed against the inner wall surface of the valve body to hold the sleeve, then the sleeve can be positioned, but the fixing member may fall off due to impact or changes over time from spool valve body reciprocation
Solution Approach 1:
The valve body is designed with a groove structure that preliminarily prepares for securing the fixing member. The groove receives and retains the fixing member, preventing it from falling off due to impact or reciprocation. This preliminary structural preparation ensures stable sleeve positioning without requiring additional complex retention mechanisms.
3Ease of manufacture
If a conventional fluid control valve unit uses multiple separate components including check valve, filter, seal member, and fixing member, then the valve can be assembled, but the number of components is large and the assembly process is complicated
Solution Approach 1:
The patent merges the filter and seal member into a single integrated component, reducing the total number of parts. Instead of assembling separate filter and seal member components, the integrated filter-seal member is installed as one piece, significantly simplifying the assembly process and reducing component count.
Solution Approach 2:
The integrated filter-seal member performs multiple functions (filtration and sealing) that previously required separate components. This reduces the quantity of components needed while maintaining full valve functionality, making the assembly process simpler and more efficient.
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 simplified design reduces costs, enhances reliability, and ensures functional stability by minimizing component detachment and foreign matter ingress, while maintaining operational efficiency.
Implementation Method 1
a plate spring piece extending from the annular plate part and applying a biasing force in the axial direction
Data Source
AI summary
A fluid control valve unit includes: a fluid control valve V, including: an inlet 74; a communication port 75, 76; a sleeve 70 having a bottom end 70a and an opening end 70b and defining an axis S; and a spool 80 disposed in the sleeve to open and close the communication port; a cylindrical passage member 50, having: an inner circumferential surface 51, fit with the sleeve; a passage; an annular receiving part 53; and an opening part 52; a filter 60; and a stopper 110, receiving the opening end 70b of the sleeve 70 accommodated in the passage member 50. The filter 60 is integrally formed by a metal plate spring member to include an annular plate part 61, a filter part 62 surrounded by the annular plate part, and a plate spring piece extending from the annular plate part.