Urinal Housing Extension Structure for Compact Functional Space

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Solution Overview

Problem

Existing urinals face a challenge in accommodating functional parts within a housing space without compromising the design aesthetics, particularly due to varying sizes of these components.

Innovation Solution

The urinal design incorporates an extension part that extends upward from the bowl surface to form part of the housing part's front wall, sloping backward to increase the housing space while maintaining a sleek appearance and improving visibility during use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the housing part is made compact to maintain design aesthetics, then the design appearance is preserved, but the housing space for functional parts becomes insufficient

Engineering Contradiction:
Improvedesign appearanceVSAvoidhousing space
Core Design Contradiction:
ShapeVSVolume of stationary object

Solution Approach 1:

The extension part projects forward from the front surface of the housing part, utilizing the depth dimension to create additional housing space without increasing the height or width of the main housing structure. This allows functional parts to be accommodated in the protruding extension part while maintaining a compact overall appearance from the front view.

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

2Volume of stationary object

If the housing part is enlarged to accommodate functional parts, then the housing space is sufficient, but the design appearance is disturbed

Engineering Contradiction:
Improvehousing spaceVSAvoiddesign appearance
Core Design Contradiction:
Volume of stationary objectVSShape

Solution Approach 1:

The housing part is segmented into a main housing body and a separate extension part that projects forward. This segmentation allows the main housing to maintain its compact, aesthetically pleasing design while the extension part provides additional housing space for functional parts, effectively separating the aesthetic and functional requirements into different spatial zones.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the extension part is made to slope backward, then visibility during use is improved, but the structural complexity increases

Engineering Contradiction:
Improvevisibility during useVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The extension part features a sloping backward surface that curves smoothly from the front to the back, creating an ergonomic shape that improves visibility during use. This curved design integrates seamlessly with the overall urinal structure, maintaining aesthetic continuity while providing the necessary slope for improved user visibility, without requiring complex mechanical components.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentUS12559929B2Urinal
Publication Date: 2026.02.24 TOTO LTD
  • US12559929B2 patent drawing
  • US12559929B2 patent drawing
  • US12559929B2 patent drawing

AI summary

A urinal includes a bowl part, a housing part, and an extension part. The bowl part receives urine on a bowl surface thereof. The housing part is formed on an upper part of the bowl part at a back side thereof and houses a functional part therein. The extension part is formed to extend upward from an upper end part of the bowl surface and forms at least a part of a front wall part of the housing part. The extension part is formed to slope backward from a lower end part thereof to an upper side thereof.