Composite Valve Body Structure for Stable Electromagnetic Switching
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Solution Overview
Problem
Conventional electromagnetic valves face challenges in achieving stable movement of the valve body, which affects the reliability and efficiency of gas passage and blockage switching.
Innovation Solution
The electromagnetic valve design incorporates a solenoid with a tubular bobbin, a plunger, and a coil generating magnetic force, along with a valve mechanism featuring a flow path member and a valve body made of resin with metal pins, which allows for stable movement and switching between gas passage and blockage through a relay part connecting first and second flow paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the valve body is made of metal block body, then the strength and durability are improved, but the movement stability and responsiveness are worsened
Solution Approach 1:
The valve body is constructed as a composite structure combining a resin main body with metal reinforcement elements (metal plate or metal mesh) embedded within. This composite design provides both the lightweight properties and movement stability of resin, and the strength and durability of metal, resolving the contradiction between material strength and movement stability.
2Strength
If the valve body is made of solid metal block, then the structural integrity is improved, but the weight and manufacturing cost are worsened
Solution Approach 1:
The valve body uses a composite construction with resin as the base material and metal components (plate or mesh) as reinforcement. This reduces overall weight compared to solid metal while maintaining structural integrity through the strategic placement of metal elements in high-stress areas.
Solution Approach 2:
The valve body is segmented into different material zones: resin for the main body structure and metal reinforcement for specific high-strength requirements. This segmentation allows optimization of weight and strength by applying materials only where needed, rather than using solid metal throughout.
3Duration of action of stationary object
If the valve body is made of solid metal block, then the durability is improved, but the manufacturing flexibility and cost are worsened
Solution Approach 1:
The composite construction allows the resin main body to be formed using molding processes for complex geometries, while metal reinforcement elements are added separately through embedding techniques. This provides manufacturing flexibility for complex valve body shapes while ensuring durability through metal reinforcement in critical areas.
Solution Approach 2:
The valve body is manufactured in segments with different materials and properties, allowing each component to be optimized for its specific function. The resin portion can be molded for complexity, while metal reinforcements provide durability, and the segmented construction simplifies the manufacturing process compared to machining solid metal.
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 enhances the stability and smooth operation of the valve body, reducing weight and manufacturing costs while ensuring reliable switching of gas flow, even in the presence of foreign matter, thereby improving the overall performance of the electromagnetic valve.
Implementation Method 1
a coil wound around an outer periphery of the bobbin, generating a magnetic force when energized, and moving the plunger
Data Source
AI summary
An electromagnetic valve includes: a solenoid, including a bobbin, a plunger, and a coil that moves the plunger; and a valve mechanism, including a flow path member that includes a first flow path, a second flow path, a relay part and a valve body housing, and a valve body that is inserted into the valve body housing, movably supported along an axial direction together with the plunger, and switches between passage and blockage between the first and the second flow paths. The valve body includes: a protrusion provided protruding radially outward from an outer periphery of the valve body and guided by an inner wall surface of the valve body housing when the valve body moves; a body made of resin; and a pin made of metal, provided at a center of the body along the axial direction and penetrating the body.