Fluid Control Device Compact Valve Limit Switch Adjustment
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Solution Overview
Problem
The existing fluid control devices with integrated valves and limit switches face challenges in compactness due to the complexity and difficulty in positional adjustment of the limit switch, requiring additional space for its placement.
Innovation Solution
A fluid control device design where the limit switch is made adjustable and positioned using a unique bolt and screw mechanism with different pitches, allowing for precise placement and minimizing space requirements, enabling the device to be compact while maintaining accurate detection of valve states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the limit switch is built in the valve, then the detection function is integrated, but the valve configuration becomes complicated and enlarged
Solution Approach 1:
The limit switch is separated from the valve body into an independent component. The valve main body and limit switch are divided into separate functional modules, with the limit switch positioned externally but mechanically linked through the moving member protrusion, thereby reducing overall structural complexity while maintaining detection integration.
Solution Approach 2:
A moving member protrusion serves as an intermediary element between the valve internal mechanism and the external limit switch. This protrusion transmits the valve's opening and closing states to the limit switch without requiring direct integration, simplifying both components while ensuring reliable detection.
2Device complexity
If the limit switch is disposed outside the valve, then the valve configuration is simplified, but additional space is required for the limit switch placement
Solution Approach 1:
The limit switch is positioned in a spatial arrangement that utilizes the existing valve structure's external surfaces and protrusions. By mounting the limit switch on the valve body's exterior at a location adjacent to the moving member's protrusion path, the design converts internal integration requirements into external surface utilization, minimizing additional space occupation.
Solution Approach 2:
The limit switch is arranged to be spatially nested within or adjacent to the valve's existing structural envelope. The moving member protrusion extends from the valve casing opening, allowing the limit switch to be positioned in a space that is already part of the valve's external dimensions, rather than requiring completely separate mounting space.
3Stability of the object's composition
If the limit switch position is fixed, then the structure is stable, but positional adjustment is difficult
Solution Approach 1:
The limit switch mounting structure incorporates adjustable positioning mechanisms that allow the limit switch to be moved to different positions during installation and maintenance. Once positioned correctly, the structure provides stable fixation, thus combining adjustability during setup with stability during operation.
Solution Approach 2:
The limit switch is designed with pre-configured mounting features that facilitate easy positioning before final installation. The adjustable mounting structure allows preliminary position adjustment to achieve optimal detection alignment, after which the position is locked for stable operation.
Data Source
AI summary
This invention provides a fluid control device capable of making compact a fluid control device in which a valve and a limit switch are combined. A valve 6 includes a piston 26 as a moving member which includes a protruding portion protruding from an opening of a casing 21, and which linearly moves according to opening and closing of the valve 6 so as to abut against a limit switch 7. The limit switch 7 is made to face the piston 26 and is attached via a limit switch positioning unit 8 so as to be adjustable about its position. The limit switch positioning unit 8 includes a first bolt 42 fixed to a body 2, a second bolt 43 fixed to the limit switch 7, and a connection screw 44 which connects both the bolts 42, 43. The first bolt 42 and the second bolt 43 have different pitches from each other.