Waterproof Solenoid Valve Pin Guide for Low-Friction Manual Reset
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Solution Overview
Problem
Waterproof solenoid valves face difficulties in maintaining stable operation due to friction between the operation pin and cap, which hinders the cap and operation pin from returning to their initial positions after pressing.
Innovation Solution
A waterproof solenoid valve design featuring a pin guide system where operation pins are freely displaced, with one end contacting the cap's flexible pressing portion and the other end contacting the manual button, reducing sliding friction by supporting the pins within guide holes and utilizing a falling prevention mechanism to prevent dislodgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the operation pin is slidably inserted and held in a holding hole formed in the cap to stably dispose the operation pin between the cap and the manual button, then the operation pin can be stably disposed, but the sliding performance of the operation pin is deteriorated by the friction between the operation pin and the cap
Solution Approach 1:
A guide hole is introduced as an intermediary structure between the operation pin and the cap. The guide hole provides a controlled pathway that reduces friction compared to direct sliding in a holding hole, while still maintaining the operational stability of the pin. This mediator structure allows the pin to move smoothly during pressing operations and return reliably to its initial position.
2Reliability
If the operation pin is freely displaced in guide holes, then the sliding friction is reduced and the pin can return to initial positions, but the pin may become dislodged or fall out
Solution Approach 1:
The guide hole is designed with dynamic characteristics that allow the operation pin to move freely during pressing operations while maintaining retention. The hole provides sufficient clearance for smooth movement but maintains structural constraints that prevent complete dislodgment. This dynamic design balances the need for low-friction movement with the need for pin retention.
3Ease of operation
If the cap is made of flexible material to allow pressing operation, then the pressing operation can be performed, but the friction between the cap and operation pin increases
Solution Approach 1:
The cap is designed with differentiated local qualities: the main body is made of flexible material to enable pressing operations, while the region interacting with the operation pin (the guide hole area) is designed to minimize friction. This local differentiation allows the cap to provide the necessary flexibility for operation while reducing friction in the critical interaction zone where the pin moves.
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 configuration ensures smooth operation and restoration of the cap and operation pins, enhancing the solenoid valve's operational efficiency and reliability by minimizing friction and ensuring stable pin placement.
Implementation Method 1
the cap includes a flexible pressing portion that is elastically deformed at a pressing operation
Data Source
AI summary
A waterproof cover includes an operation unit for pressing a manual button of a solenoid valve main body. The operation unit includes a flexible cap, a pin guide interposed between the cap and the solenoid valve main body, and an operation pin that is inserted in guide hole of the pin guide so as to be displaced freely. The cap includes a flexible pressing portion for a pressing operation. One end of the operation pin is in contact with or close to the pressing portion, and the other end of the operation pin is in contact with the manual button.