Hydraulic Valve Filter Detent Assembly

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional hydraulic pressure control valves require high positioning accuracy for filter assembly, degrading assemblability due to their detent function design.

Innovation Solution

A hydraulic pressure control valve design featuring a valve body with annular grooves and restraining portions, where filters are wound to cover opening portions with mesh and mask portions, allowing for axial and detent functions without compromising assemblability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If filters are designed with wide capturing portions and narrow connecting portions to provide detent function, then the detent function is improved, but the positioning accuracy requirement increases and assemblability deteriorates

Engineering Contradiction:

Improvedetent functionVSAvoidassemblability

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The filter is segmented into three distinct portions: a capturing portion for trapping contaminants, and two connecting portions for attachment. This segmentation allows each portion to be optimized independently - the capturing portion can be wide for effective filtration while the connecting portions can be narrow for easy assembly, resolving the contradiction between detent function and assemblability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the filter are given different widths to serve different functions. The capturing portion has a wider width optimized for filtration performance, while the connecting portions have narrower widths optimized for assembly. This local differentiation allows the filter to achieve both detent function and good assemblability simultaneously

Inventive Principle:

Principle #3Local quality

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

Enables simple and accurate assembly of filters with reduced need for precise alignment, improving ease of assembly and manufacturing while maintaining the detent function.

Implementation Method 1

each filter having a mesh portion for filtering hydraulic fluid and a mask portion covering the restraining portion

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS10344635B2Hydraulic pressure control valve and internal-combustion engine valve timing control apparatus

Publication Date: 2019.07.09 ASTEMO LTD

AI summary

Provided is a hydraulic pressure control valve capable of exhibiting a filter detent function without degrading the assemblability of filters to a valve body.A hydraulic pressure control valve according to the present invention includes a valve body having a plurality of opening portions formed in a cylindrical peripheral wall, annular grooves, and a restraining portion provided in each of the annular grooves, a spool valve, and filters wound to cover the opening portions, respectively, and each having a mesh portion for filtering hydraulic fluid and a mask portion covering the restraining portion.