Solenoid Valve Cover Assembly for Rigid Locking Without Deformation
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Solution Overview
Problem
Existing solenoid valves face issues with insufficient fixation rigidity between the valve body and the magnetic cover, leading to potential play and decreased performance due to plastic deformation during assembly.
Innovation Solution
The solenoid valve design incorporates a magnetic cover formed by bending a magnetic metal sheet with specific bent portions and fastening members, enhancing the engagement between locking protrusions and engagement holes to achieve improved fixation rigidity through additional locking mechanisms and spring portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic cover is formed by bending a magnetic metal sheet with spring portions to prevent plastic deformation during assembly, then the magnetic cover can accommodate the engagement process without deformation, but the fixation rigidity between the valve body and magnetic cover is insufficient
Solution Approach 1:
The magnetic cover is segmented into multiple functional portions: spring portions for absorbing assembly stress and preventing plastic deformation, locking protrusions for mechanical interlocking, and engagement holes for receiving the locking protrusions. This segmentation allows each portion to specialize in one function, resolving the contradiction between flexibility and rigidity.
Solution Approach 2:
The spring portions are pre-formed in the magnetic cover before assembly, creating a preliminary elastic structure that can absorb deformation stresses during the engagement process. This preliminary action prevents plastic deformation while the locking protrusions and engagement holes provide the necessary fixation rigidity once engaged.
2Stability of the object's composition
If the magnetic cover includes only spring portions for flexibility, then plastic deformation is prevented during assembly, but the fixation rigidity remains insufficient
Solution Approach 1:
The invention merges two previously separate functions into a single magnetic cover structure: the spring portions provide flexibility and deformation resistance, while the locking protrusions and engagement holes provide fixation rigidity. This merging resolves the contradiction by combining elastic deformation capacity with mechanical interlocking strength in one component.
Solution Approach 2:
The magnetic cover can be formed using composite materials or a composite structure that combines materials with different properties - one providing elastic flexibility for the spring portions and another providing strength for the locking features, thereby achieving both deformation resistance and fixation rigidity simultaneously.
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 ensures reliable engagement between the valve body and magnetic cover, providing sufficient fixation rigidity and preventing plastic deformation, thus enhancing the assembly's stability and performance.
Implementation Method 1
configured to move the valve plug by moving a movable iron core in the axial direction due to magnetic excitation of the solenoid portion
Data Source
AI summary
A solenoid valve is formed by engaging locking protrusions with engagement holes and thereby joining a valve body and a magnetic cover to each other. A top wall of the magnetic cover is formed by a pair of bent portions that extend from a pair of respective sidewalls of the magnetic cover and that are bent toward the space between the sidewalls. The bent portions are fastened to each other in the width direction Wd by a circuit board spacer (first fastening member), and the circuit board spacer and the valve body are fastened to each other in the axial direction Ld by a connector cover.