Solenoid Valve Flat Spring Support Mechanism
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Solution Overview
Problem
Solenoid valves with poppet valves face challenges in reducing size and achieving easy assembly due to the need for compression springs and shaft members, which increase the number of parts and affect the precision of the poppet valve's opening and closing operations.
Innovation Solution
A solenoid valve design featuring a fixed iron core with parallel supporting and driving legs, a movable iron core with an arcuate sliding-contacting surface, and a flat spring that maintains the swinging center without additional connecting members, allowing for reduced size and improved assembly by eliminating the need for compression springs and shaft members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compression spring and shaft member are used to support the movable iron core, then the solenoid valve can maintain structural stability, but the number of parts increases and the size cannot be reduced
Solution Approach 1:
The patent removes the compression spring and shaft member from the structure, extracting unnecessary components that increase complexity. The movable iron core is directly supported by the fixed iron core structure, eliminating auxiliary supporting parts while maintaining functional stability.
Solution Approach 2:
The patent merges the support function into the fixed iron core structure itself. The fixed iron core directly supports the movable iron core without requiring separate shaft members, combining multiple functions into a single integrated component.
2Reliability
If a compression spring and shaft member are used to support the movable iron core, then the solenoid valve can maintain structural stability, but the size of the solenoid valve cannot be reduced
Solution Approach 1:
The patent removes the compression spring and shaft member from the structure, extracting unnecessary components that increase complexity. The movable iron core is directly supported by the fixed iron core structure, eliminating auxiliary supporting parts while maintaining functional stability.
Solution Approach 2:
The patent merges the support function into the fixed iron core structure itself. The fixed iron core directly supports the movable iron core without requiring separate shaft members, combining multiple functions into a single integrated component.
3Reliability
If additional connecting members are used to attach the movable iron core, then the structural connection is ensured, but the assembly becomes more difficult and time-consuming
Solution Approach 1:
The patent removes the compression spring and shaft member from the structure, extracting unnecessary components that increase complexity. The movable iron core is directly supported by the fixed iron core structure, eliminating auxiliary supporting parts while maintaining functional stability.
Solution Approach 2:
The patent merges the support function into the fixed iron core structure itself. The fixed iron core directly supports the movable iron core without requiring separate shaft members, combining multiple functions into a single integrated component.
4Ease of operation
If the movable iron core is swingably supported by a shaft member, then the poppet valve can be operated, but the swinging center alignment precision decreases
Solution Approach 1:
The patent removes the compression spring and shaft member from the structure, extracting unnecessary components that increase complexity. The movable iron core is directly supported by the fixed iron core structure, eliminating auxiliary supporting parts while maintaining functional stability.
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 reduces the number of parts, enabling a smaller solenoid valve with improved precision in poppet valve operation and easier assembly, while maintaining consistent swinging center alignment for precise control.
Implementation Method 1
a fixed iron core with a magnetic wire wound around
Implementation Method 2
the flapper is applied a spring force in a direction departing from the magnetically-attracting surface. When the other end portion of the flapper is moved toward the magnetically-attracting surface by an energized coil
Implementation Method 3
the flat spring presses the sliding-contacting surface onto the sliding-abutting surface when the coil is de-energized
Data Source
AI summary
The solenoid valve (10) has a poppet valve (41) which is operated to move between a position to close a port and a position to open the port. A fixed iron core (50) having a supporting leg (52) and a driving leg (51) is installed in a valve housing (11), and a movable iron core (60) which drives the poppet valve (41) is disposed between a valve driving member (42) and the fixed iron core (50). An arcuate sliding contact surface (61) is provided on one end portion of the movable iron core (60), and a sliding-abutting surface (62) which abuts on the sliding contact surface (61) is provided on a leading end portion of the supporting leg (52). When a coil (56) is de-energized, the sliding-contacting surface (61) is pressed onto the sliding-abutting surface (62) by a flat spring (70), with an abutting portion of the valve driving member (42) serving as a fulcrum of a tensile force applied to the movable iron core (60).