Opening Valve Locking Mechanism Against Vibration Leakage
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Solution Overview
Problem
Conventional opening and closing valves face issues with operation lever interference due to container shape and discharge port orientation, leading to potential liquid leakage from unwanted valve body rotation caused by vibrations.
Innovation Solution
The design incorporates a regulation member that moves between regulation and non-regulation positions relative to the rotary shaft, allowing the operation member to switch between integral and rotation-free states, preventing unintended valve body rotation and ensuring the valve remains closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operation lever is made accessible for easy operation, then ease of operation is improved, but the operation lever may interfere with container attachment or protruding portions around the discharge port
Solution Approach 1:
The operation lever is repositioned from a lateral extension that causes interference to a position on the distal end of the discharge port, utilizing the axial dimension. This dimensional relocation allows the lever to be accessible for operation while clearing the space around the discharge port where protruding portions exist, thereby resolving the conflict between ease of operation and attachment adaptability.
2Manufacturing precision
If the discharge port is fixed in a desired orientation, then orientation precision is improved, but the operation lever becomes settled in a limited orientation and cannot be simultaneously positioned optimally
Solution Approach 1:
By moving the operation lever to the distal end of the discharge port along the axial dimension, the lever's orientation is decoupled from the discharge port's orientation. This allows the discharge port to be precisely oriented for attachment while the lever, positioned at the tip, can be independently oriented for optimal accessibility and operation.
3Ease of operation
If the valve body is allowed to rotate freely for opening and closing operation, then ease of operation is improved, but vibration may cause unwanted rotation and liquid leakage
Solution Approach 1:
A detent mechanism acts as an intermediary between the operation lever and the valve body. This mechanism allows intentional rotation of the valve body for opening and closing operations while preventing unintentional rotation caused by vibration. The detent mechanism selectively permits rotation only when sufficient force is applied through the operation lever, thereby maintaining both ease of operation and reliability.
Data Source
AI summary
In an opening and closing valve of the invention, an operation dial and a valve body housed in a main body are connected by a rotary shaft, and a regulation member having a first fitting hole engaging with a fitter in the rotary shaft is disposed in a housing space of the main body. When a second fitting hole in the operation dial is released from the fitter in the closed state, the first fitting hole is fitted into the fitter to regulate the rotation, or when the second fitting hole is fitted into the fitter, the first fitting hole is released from the fitter to achieve the rotation.