Solenoid Valve Cover Assembly for Higher Fixation Rigidity
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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 reduced 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 running up of sidewalls onto locking protrusions, but the fixation rigidity between the valve body and magnetic cover is insufficient
Solution Approach 1:
The magnetic cover is divided into multiple functional segments: sidewalls for engagement, bonnet wall with spring portions for deformation accommodation, top wall for additional engagement, and bottom wall for structural support. This segmentation allows each part to perform its specific function optimally while working together to achieve both deformation prevention and high fixation rigidity
Solution Approach 2:
Multiple engagement mechanisms are merged into a single assembly structure: the sidewalls with locking protrusions, the top wall with additional locking protrusions, and the bonnet wall with spring portions all work simultaneously to provide both deformation tolerance and high fixation rigidity, resolving the contradiction between flexibility and strength
2Ease of manufacture
If the magnetic cover uses a simple engagement structure with locking protrusions and engagement holes, then the assembly process is simple, but the fixation rigidity is insufficient leading to play between components
Solution Approach 1:
The engagement structure is extended from a single-plane connection to a multi-dimensional configuration with locking protrusions on sidewalls, additional locking protrusions on the top wall, and spring portions on the bonnet wall. This multi-dimensional engagement provides high fixation rigidity while maintaining assembly simplicity through the intuitive insertion motion
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 and increased fixation rigidity between the valve body and the magnetic cover, reducing the likelihood of plastic deformation and enhancing the overall assembly stability.
Implementation Method 1
magnetic excitation of a solenoid portion
Implementation Method 2
magnetic excitation of the solenoid portion displaces a movable iron core
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
[Object] To provide sufficient fixation rigidity between a valve body and a magnetic cover in a solenoid valve that is formed by engaging locking protrusions with engagement holes and thereby joining the valve body including a valve plug for switching the communication state of ports to the magnetic cover accommodating a solenoid portion for moving the valve plug. [Solution] A solenoid valve 1A is formed by engaging locking protrusions 15 with engagement holes 30c and thereby joining a valve body 10 and a magnetic cover 30 to each other. A top wall 34 of the magnetic cover is formed by a pair of bent portions 36 and 37 that extend from a pair of respective sidewalls 32 and 33 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) 51, and the circuit board spacer and the valve body are fastened to each other in the axial direction Ld by a connector cover (second fastening member) 53.