Spool Valve Coupling Shaft for Simpler Pin Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing valve devices with a spool require complex assembly operations, particularly when connecting the operating pin to the rotating shaft within a cover housing the spool.
Innovation Solution
The valve device incorporates an operation shaft that can be moved along the rotation axis of the operation pin to switch between a coupled and uncoupled state, eliminating the need for a separate rotating shaft connected to the operation pin, thereby simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate rotating shaft connected to the operation pin is provided, then the spool can be rotated to switch the liquid flow path, but the assembly operation becomes complex requiring connection of the operating pin to the rotating shaft by a fixing pin inside a cover
Solution Approach 1:
The operation shaft integrates both the rotating shaft function and the operation pin connection function into a single component. The operation shaft includes a rotation part that rotates together with the operation pin and a pressing part that presses the operation pin, eliminating the need for a separate fixing pin connection operation and reducing assembly complexity while maintaining the spool rotation capability
2Ease of operation
If a separate rotating shaft connected to the operation pin is provided, then the spool can be rotated to switch the liquid flow path, but the number of components increases
Solution Approach 1:
The operation shaft combines multiple functional elements (rotation shaft, operation pin connection mechanism, pressing mechanism) into a single integrated component, reducing the total number of parts while maintaining all necessary functions for spool rotation and flow path switching
3Ease of operation
If a separate rotating shaft connected to the operation pin is provided, then the spool can be rotated to switch the liquid flow path, but the device configuration becomes complex
Solution Approach 1:
The operation shaft integrates the rotation function and the pressing function into a single component structure, simplifying the overall device configuration. The rotation part and pressing part work together in a coordinated manner within the same component, reducing structural complexity while maintaining operational effectiveness
Solution Approach 2:
The operation shaft acts as an intermediary mechanism that translates rotational motion into linear pressing motion on the operation pin, which in turn rotates the spool. This intermediary structure simplifies the overall configuration by providing a clear mechanical linkage path without requiring multiple separate components
Data Source
AI summary
A valve device (100) includes an operation shaft (50) operable to be moved along a rotation axis A1 of an operation pin (40) to be switched between a coupled state in which the operation shaft (50) is coupled to the operation pin (40) and rotates together with the operation pin (40), and an uncoupled state in which the operation shaft (50) is not coupled to the operation pin (40) and supports the operation pin (40) such that the operation pin (40) is rotatable. The operation pin (40) is operable to be rotated about the rotation axis A1 such that a spool (20) is moved when the operation shaft (50) is rotated about the rotation axis A1 in the coupled state.