Sprinkler Riser Assembly Snap-Fit Stability

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Solution Overview

Problem

Existing sprinkler riser assemblies lack robustness and ease of assembly, often experiencing disengagement issues under pressure and thermal expansion, which compromises their stability and reliability in irrigation systems.

Innovation Solution

A sprinkler riser assembly design featuring a stabilizer base with pressure mount and snap engagement portions, and a riser mount and coupler with a slidable portion and snap engagement protrusion, which increases resistance to disengagement through torque and resilient elements, along with a manually operable removably engageable hook for secure attachment of pipes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a traditional rigid connection method is used for the sprinkler riser assembly, then the assembly strength is improved, but the ease of assembly and disassembly deteriorates

Engineering Contradiction:

Improveassembly strengthVSAvoidease of assembly

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The connection system is divided into separate snap engagement portions on the stabilizer base and riser mount, allowing independent assembly of components. The snap-fit mechanism enables the riser mount to be quickly attached to the stabilizer base without complex fastening procedures, resolving the contradiction between strong connection and easy assembly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The traditional mechanical fastening system (screws, bolts, or welds) is replaced with a snap-fit engagement mechanism. This mechanical substitution allows the assembly to achieve sufficient connection strength through the snap engagement portions while enabling tool-free assembly and disassembly, thus improving ease of operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If a simple connection structure is used for the sprinkler riser assembly, then the ease of assembly is improved, but the reliability under pressure and thermal forces deteriorates

Engineering Contradiction:

Improveease of assemblyVSAvoidreliability under pressure

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The connection system merges multiple functions into a single snap-fit engagement mechanism: it provides both the ease of assembly through simple snap engagement and the reliability under pressure through the interlocking geometry of the snap engagement portions. The protrusion and recess features work together to create a robust connection that resists pressure and thermal forces.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The connection system incorporates dynamic elements that allow for thermal expansion and contraction. The snap engagement portions are designed to accommodate dimensional changes due to temperature variations while maintaining reliable connection. The resilient nature of the snap-fit mechanism allows it to adapt to thermal forces without compromising reliability.

Inventive Principle:

Principle #15Dynamics

3Strength

If a complex snap engagement mechanism with torque generation is used, then the resistance to disengagement is improved, but the device complexity increases

Engineering Contradiction:

Improveresistance to disengagementVSAvoidmechanism complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

Instead of using a complex multi-component locking mechanism, the design inverts the approach by using a simple snap-fit geometry that generates torque through the interaction of the protrusion and recess features. The torque is generated inherently by the geometric configuration rather than additional mechanical elements, thus improving resistance to disengagement without increasing device complexity.

Inventive Principle:

Principle #13The other way round (Inversion)

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 design enhances the robustness and ease of assembly of the sprinkler riser assembly, providing increased resistance to disengagement from pressure and thermal forces, ensuring stable operation and easy maintenance.

Implementation Method 1

application of the tensile force creating a torque on the moveable element causing rotation of the moveable element about an axis of rotation

Methodology Applied

Scientific EffectTorque: Torque

Implementation Method 2

the moveable element includes a resilient slanted portion terminating in a step-like segment

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS10646890B2Sprinkler riser assembly

Publication Date: 2020.05.12 NAANDANJAIN IRRIGATION

AI summary

A sprinkler riser assembly including a stabilizer base and a riser mount and coupler, removably mountable onto the stabilizer base, the stabilizer base including at least one pressure mount portion and at least one stabilizer base snap engagement portion and the riser mount and coupler including a slidable portion for slidable engagement with the at least one pressure mount portion of the stabilizer base and at least one riser mount and coupler snap engagement portion for operative removable snap fit engagement with the at least one stabilizer base snap engagement portion.