Magnetic Valve With Dual Biasing For NC NO Assembly
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Solution Overview
Problem
Existing electromagnetically actuated piston slide valves for vehicle shock absorbers are limited by the need for distinct function-defining parts for 'normally closed' (NC) and 'normally open' (NO) operation, leading to increased complexity, costs, and fabrication efforts due to different inner constructions.
Innovation Solution
A piston slide valve design incorporating two biasing devices that allow the same function-defining parts to operate in both NC and NO modes, with an assembly set enabling the use of a single magnetic armature configuration for either mode, reducing the number of required parts and facilitating serial fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distinct function-defining parts are used for NC and NO valves, then the valves can achieve their respective normally closed and normally open functions, but the complexity of the valve increases and production costs rise
Solution Approach 1:
The patent applies universality by designing a single magnetic armature configuration that can function in both NC and NO modes. The magnetic armature is coupled with the slide such that it can be axially displaced by electromagnetic field generation to close a fluid passage, while the slide's guidance on its outer side in the valve housing enables it to function in both valve types without requiring distinct function-defining parts for each mode.
2Reliability
If distinct function-defining parts are used for NC and NO valves, then the valves can achieve their respective normally closed and normally open functions, but the fabrication effort increases
Solution Approach 1:
The patent enables a single set of function-defining parts (slide, magnetic armature, valve body with passage openings) to be used for both NC and NO valve variants. The slide is guided on its outer side in the valve housing, and the magnetic armature is coupled with the slide to enable axial displacement through electromagnetic field generation, allowing the same components to achieve both normally closed and normally open functions without requiring separate fabrication processes.
3Reliability
If distinct function-defining parts are used for NC and NO valves, then the valves can achieve their respective normally closed and normally open functions, but the number of required parts increases
Solution Approach 1:
The patent reduces the number of required parts by designing a universal assembly set containing a single magnetic armature configuration, slide, valve body with passage openings, and biasing device that can be assembled into either an NC or NO valve. The magnetic armature is coupled with the slide to enable axial displacement through electromagnetic field generation, and the slide's outer-side guidance in the valve housing allows the same components to function in both valve types.
4Reliability
If NC and NO valves have different inner constructions, then they can achieve their respective functions, but the assembly set complexity increases
Solution Approach 1:
The patent simplifies the assembly set by providing a single magnetic armature configuration that works for both NC and NO valve variants. The magnetic armature is coupled with the slide such that electromagnetic field generation axially displaces the slide to close the fluid passage, while the slide's guidance on its outer side in the valve housing enables the same assembly to function in both normally closed and normally open modes without requiring different inner constructions.
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 allows for the use of identical hydraulic parts for both NC and NO valves, reducing production costs and effort, and enabling the assembly of both variants in a common facility, while maintaining robust and low-friction guidance for the slide and magnetic armature.
Implementation Method 1
by electrically energizing the coil, the magnetic armature is axially displaceable in the valve housing to open and close a fluid passage
Implementation Method 2
two biasing devices which are supported on the valve housing such that they act in opposite directions... in the electrically unenergized state of the coil, the slide adopts a position in which the fluid passage is closed
Data Source
AI summary
An electromagnetically actuated piston slide valve and an assembly set for such a valve with which an NC valve and an NO valve can be fabricated. Such a valve of the NC construction type comprises a valve housing with corresponding connectors and a fluid passage. A slide coupled with a magnetic armature is provided for regulating a free cross-sectional area of the fluid passage. A first spring urges the slide in an opening direction and a second spring urges the slide in an opposite closing direction, wherein the first and the second spring are adapted such that, in the electrically unenergized state of the coil, the slide adopts a position in which the fluid passage is closed.