Sprinkler Water Flow Switching Device with Integrated Pivot Joint
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Solution Overview
Problem
Conventional water flow switching devices for sprinklers face challenges in complex component assembly, leading to increased production and material costs, and misalignment issues that reduce service life.
Innovation Solution
A novel water flow switching device with a confining casing containing a partitioned gear and reversing impeller chamber, featuring a projecting swing arm, water shut-off device with elastic arms, and a pivot joint with convex and concave portions, allowing precise alignment and sealing, and a snap-over portion with elastic board for enhanced flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional water flow switching devices (seesaw plate or oscillating rod) are used, then water flow control function is achieved, but component assembly complexity increases and production costs escalate
Solution Approach 1:
The patent merges the water shut-off device and the oscillating rod into a single integrated component structure. The water shut-off device includes an oscillating end that directly forms part of the rod assembly, eliminating the need for separate seesaw plate and oscillating rod components. This integration simplifies assembly while maintaining the water flow control function.
Solution Approach 2:
The oscillating end of the water shut-off device serves multiple functions: it acts as both a flow control element and a positioning element for the snap-over portion. The single component performs what previously required multiple specialized parts, reducing overall device complexity while maintaining functionality.
2Reliability
If conventional water flow switching devices are used, then water flow control is achieved, but component actions are not precisely aligned during switching, reducing service life
Solution Approach 1:
The snap-over portion provides a mechanical feedback mechanism that ensures precise alignment during switching. When the oscillating end moves between positions, the snap-over portion engages with the oscillation positioning portion to confirm proper positioning. This feedback loop guarantees that component actions are precisely aligned, preventing wear and extending service life.
Solution Approach 2:
The oscillation positioning portion acts as an intermediary element between the oscillating end and the snap-over portion. It mediates the alignment process by providing a precise reference surface that ensures the oscillating end is correctly positioned before the snap-over portion engages, thereby ensuring precise component alignment during switching.
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
The solution streamlines component assembly, reduces costs, ensures precise water flow redirection, and extends the service life of sprinklers by simplifying the structure and enhancing alignment precision.
Implementation Method 1
The pivot joint comprises a convex portion and a concave portion which are nested and pivotable with each other
Implementation Method 2
The water shut-off device comprises two elastic arms in a bifurcated configuration, allowing the first flap end and the second flap end to be coupled to the ends of the two elastic arms, respectively
Implementation Method 3
two profiled grooves are formed on both sides of the snap-over portion of the water shut-off device, and an elastic board is formed between the two profiled grooves constituting the snap-over portion on the structure of the elastic board to enhance the flexibility of the snap-over action
Data Source
AI summary
Disclosed is a water flow switching device for sprinkler applications, the features of which include a projecting swing arm having a driven end, an oscillating end, and a supporting flange. The driven end extends to the exterior of an end wall and corresponding to a spray angle control mechanism to form a driven relationship. The oscillating end being located in a gear chamber. The supporting flange is mounted on a pivot seat. The oscillating end includes a first and a second oscillating position. A water shut-off device is disposed in the gear chamber. One side of the device has a first flap end, a second flap end, and a snap-over portion. A pivot joint is provided between an assembly end of the water shut-off device and the oscillating end, including a convex portion and a concave portion for nesting and pivoting with each other