Snap-on Flow Valve Assembly with Internal Body

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Solution Overview

Problem

Existing on-off liquid flow valves face challenges in assembly due to their complex structure and small size, particularly with snap-on coupling systems, which can make it difficult to correctly position additional components between the cover and valve body, increasing assembly complexity and time.

Innovation Solution

An on-off liquid flow valve design featuring a snap-on coupling system with an internal body and auxiliary duct, including an annular groove and hole, allows for sliding connection along an axis, ensuring flow regardless of indexation and simplifying assembly by eliminating the need for precise orientation of components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a snap-on coupling system is used to connect the cover and valve body, then assembly speed is improved, but positioning precision of additional components deteriorates

Engineering Contradiction:
Improveassembly speedVSAvoidpositioning precision of additional components
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The internal body acts as an intermediary component between the valve body and cover, providing a stable mounting platform for additional components. This mediator ensures precise positioning while maintaining the quick assembly benefits of the snap-on coupling system, as the internal body can be pre-positioned with accurate features before final assembly.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The internal body is pre-assembled with additional components (such as the auxiliary duct, control device, and shutter assembly) before being installed in the final valve assembly. This preliminary action ensures that all additional components are correctly positioned and secured, eliminating positioning issues during final snap-on assembly of the cover and valve body.

Inventive Principle:
Principle #10Preliminary action

2Volume of moving object

If the valve size is reduced to meet market demands, then compactness is improved, but assembly complexity increases

Engineering Contradiction:
Improvevalve sizeVSAvoidassembly complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

Multiple functions are merged into the internal body, which serves as both a structural support element and a mounting platform for the auxiliary duct, control device, and shutter assembly. This consolidation reduces the number of separate components that need to be handled during assembly, thereby reducing assembly complexity despite the compact size and multiple functional requirements.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If additional components are added between the cover and valve body, then functionality is improved, but assembly difficulty increases

Engineering Contradiction:
ImprovefunctionalityVSAvoidassembly difficulty
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The valve assembly is segmented into distinct functional modules: the valve body, the internal body (containing auxiliary components), and the cover. This segmentation allows each module to be assembled and tested independently, then quickly combined through the snap-on coupling system, reducing overall assembly difficulty while maintaining enhanced functionality.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS8336848B2On-off flow valve
Publication Date: 2012.12.25 R P E SRL
  • US8336848B2 patent drawing
  • US8336848B2 patent drawing
  • US8336848B2 patent drawing

AI summary

An on-off flow valve extends along an axis and has a valve body through which a supply duct and a delivery duct pass; a main shutter assembly; and a cover fitted to the valve body by means of a snap-on coupling system.