Electromagnetic Valve Unit Elastic Mounting for Stable Attachment
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Solution Overview
Problem
Existing electromagnetic valve units face challenges in ensuring sufficient repulsive force between the housing portion of control equipment and the valve unit, leading to potential misalignment and instability during attachment.
Innovation Solution
The electromagnetic valve unit is designed with an annular elastic member featuring a protruded portion inserted into a recessed portion of the shoulder portion, and an annular deformation portion that can deform in the axial direction without pressing the protruded portion, ensuring secure attachment and sufficient repulsive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clamping force of the elastic member on the shoulder portion is strengthened, then the electromagnetic valve unit can be securely attached without twisting, but the intrinsic stress of the elastic member in radial direction increases, reducing the repulsive force between the housing portion and the electromagnetic valve unit
Solution Approach 1:
The elastic member is divided into two functional portions: a first portion (clamping portion) that provides clamping force on the shoulder portion for secure attachment, and a second portion (repulsive force generation portion) that generates repulsive force in the axial direction. This segmentation allows each portion to be optimized for its specific function without compromising the other.
Solution Approach 2:
Different portions of the elastic member are given different structural properties: the first portion has a structure optimized for radial clamping (e.g., fitted on a vertical surface with specific contact geometry), while the second portion has a structure optimized for axial repulsion (e.g., positioned between horizontal surfaces). This local differentiation enables simultaneous achievement of secure attachment and sufficient repulsive force.
2Force
If the clamping force of the elastic member on the shoulder portion is weakened, then the intrinsic stress in radial direction is reduced, but the electromagnetic valve unit may twist during insertion, causing misalignment and inaccurate attachment
Solution Approach 1:
The elastic member is divided into a first portion dedicated to preventing twisting during insertion through clamping on the vertical surface, and a second portion that provides axial repulsive force. This segmentation allows the clamping function to be optimized for precision without excessive stress.
Solution Approach 2:
The first portion of the elastic member acts as an intermediary that secures the electromagnetic valve unit to the shoulder portion during insertion, preventing twisting and ensuring accurate alignment before the final attachment is completed by the repulsive force of the second portion.
3Force
If a wave washer with high repulsive force is used, then the repulsive force between the housing portion and the electromagnetic valve unit is sufficient, but the process of inserting the electromagnetic valve unit becomes more difficult and high accuracy is required for pressing amount
Solution Approach 1:
The elastic member is segmented into a first portion that facilitates easy insertion through flexible clamping on the shoulder portion, and a second portion that provides sufficient repulsive force. This eliminates the need to choose between ease of insertion and repulsive force strength.
Solution Approach 2:
The elastic member is designed with specific geometric parameters: the first portion has dimensions and material properties optimized for low-resistance clamping during insertion, while the second portion has parameters optimized for generating adequate repulsive force. This parameter optimization enables both easy insertion and sufficient repulsive force.
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 configuration allows for easy and accurate attachment of the electromagnetic valve unit to the housing portion while maintaining sufficient repulsive force, preventing detachment due to vibrations or handling, and reducing the risk of misalignment.
Implementation Method 1
an annular elastic member provided with a protruded portion to be inserted into a recessed portion formed at the shoulder portion, wherein the annular elastic member is further provided with an annular deformation portion that is deformable in the axial direction of the electromagnet valve unit so as not to press the protruded portion in the axial direction
Data Source
AI summary
An electromagnetic valve unit held so as to be sandwiched between a receiving portion of a housing portion of control equipment and a pressing member includes a shoulder portion to be opposed to the receiving portion of the housing portion and an annular elastic member provided with a protruded portion to be inserted into a recessed portion formed at the shoulder portion. The annular elastic member is further provided with an annular deformation portion that is deformable in the axial direction so as not to press the protruded portion in the axial direction.