Pull-Out Faucet Valve Core Seat Mounting for Smaller Branch Pipes

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Solution Overview

Problem

Existing pull-out faucet designs require a large inner diameter for the branch pipe due to the assembly of the valve core seat and accessories, leading to high material consumption, increased cost, and a complex structure with difficulty in production.

Innovation Solution

A mounting structure for the valve core seat in a pull-out faucet that utilizes a restricting portion in the branch pipe to secure the seat, allowing it to be mounted from the main pipe end, reducing the required space and eliminating the need for an enlarged inner diameter, and incorporating a locking mechanism for stable assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the valve core seat and accessories are assembled as a whole and mounted into the valve core hole, then the assembly is secure and stable, but the required inner diameter of the branch pipe becomes large, increasing material consumption and cost

Engineering Contradiction:
Improveassembly stabilityVSAvoidmaterial consumption
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The invention divides the valve core assembly into separate components: the valve core seat remains in the branch pipe, while the valve core body with accessories is assembled separately and connected through the valve core hole. This segmentation allows the branch pipe to maintain its original smaller diameter without needing to accommodate the entire assembly, reducing material consumption while preserving assembly stability through the connection structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The valve core body and accessories are extracted from the traditional integrated assembly approach and separated from the branch pipe structure. The valve core seat remains fixed in the branch pipe, while the valve core body is positioned and connected separately through the valve core hole, allowing the branch pipe to maintain its original dimensions and reducing material usage.

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If the valve core hole size is increased to accommodate the valve core seat and accessories, then more accessories can be mounted, but the inner diameter of the branch pipe increases, leading to high material consumption and high cost

Engineering Contradiction:
Improveaccessory mounting capabilityVSAvoidmaterial consumption
Core Design Contradiction:
Adaptability or versatilityVSLoss of substance

Solution Approach 1:

The invention segments the mounting structure so that the valve core seat remains fixed in the branch pipe while accessories are mounted on the valve core body that connects through the valve core hole. This allows accessories to be mounted without increasing the branch pipe's inner diameter, maintaining adaptability while reducing material consumption.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention transitions from a two-dimensional planar assembly (where everything must fit within the branch pipe cross-section) to a three-dimensional arrangement where the valve core body extends through the valve core hole, providing additional space for accessories without increasing the branch pipe's inner diameter.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Reliability

If the valve core seat is positioned by the valve core fixed in the valve core hole, then the valve core seat can be secured, but the faucet body structure becomes complicated with great difficulty in production

Engineering Contradiction:
Improvepositioning accuracyVSAvoidproduction difficulty
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The invention extracts the positioning function from the complex faucet body structure and transfers it to a simple positioning structure at the end of the valve core hole. This allows the valve core seat to be accurately positioned and secured without requiring complicated faucet body design, greatly simplifying production while maintaining positioning accuracy.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS12565937B2Mounting structure of a valve core seat of a pull-out faucet, and a pull-out faucet with a sensing function comprising said mounting structure
Publication Date: 2026.03.03 XIAMEN FOR BETTER SANITARY WARE
  • US12565937B2 patent drawing
  • US12565937B2 patent drawing
  • US12565937B2 patent drawing

AI summary

A mounting structure of a valve core seat of a pull-out faucet in a faucet body which has a main pipe and a branch pipe communicating with each other; a restricting portion is protruded out radially into the branch pipe from an inner diameter of an end of the branch pipe in communication with the main pipe; one side of the valve core seat has a boss; a stepped surface is formed the valve core seat surrounding the boss; the valve core seat is inserted from a lower end of the main pipe and installed at a height corresponding to the branch pipe, and the boss is inserted into the branch pipe through a space enclosed by the restricting portion, and the stepped surface is locked and fixed to the restricting portion. A pull-out faucet having a sensing function that includes the above mounting structure is also disclosed.