Modular Bidet Toilet Layout for Compact In-Bowl Assembly

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Solution Overview

Problem

Existing shower toilets require separate and bulky components for the boiler and pump, necessitating a large casing and excessive space, with complex assembly and installation in confined spaces.

Innovation Solution

A self-contained shower toilet design where the boiler, pump, and control unit are combined into a compact block, pre-installed within the toilet bowl cavity, using simplified fastening elements for efficient space utilization and assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If separate components (boiler, pump) are used with individual casings, then each component can be independently manufactured and replaced, but the overall device occupies excessive space and requires complex assembly

Engineering Contradiction:
ImproveIndependent component manufacturingVSAvoidTotal device volume
Core Design Contradiction:
Ease of manufactureVSVolume of stationary object

Solution Approach 1:

The patent combines the boiler, pump, and control unit into a single integrated technical unit module that fits within the toilet bowl cavity. This merging eliminates the need for separate casings and reduces the total volume occupied by these components, while maintaining their individual functional independence for manufacturing and replacement purposes.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The technical unit module is designed to be nested within the cavity of the toilet bowl, with the boiler, pump, and control unit arranged in a compact configuration that utilizes the available space efficiently. This nesting approach allows all components to coexist in a confined space without requiring external mounting structures.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If multiple separate components are installed in the toilet bowl cavity, then functional redundancy and ease of replacement are achieved, but the available installation space is insufficient

Engineering Contradiction:
ImproveComponent replaceabilityVSAvoidInstallation space
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

By merging the boiler, pump, and control unit into a single replaceable module, the patent maintains functional versatility while dramatically reducing the installation footprint. The entire technical unit module can be installed or replaced as one unit, preserving ease of maintenance while fitting within the limited cavity space.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The technical unit module is designed with a compact three-dimensional configuration that optimizes the use of vertical and horizontal space within the cavity. Components are arranged in layers and at different heights to maximize space utilization while maintaining accessibility for installation and maintenance.

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

3Ease of operation

If a separate chamber is provided for the under-shower unit, then functional separation and maintenance access are improved, but the wall thickness and overall space requirements increase

Engineering Contradiction:
ImproveMaintenance accessVSAvoidWall thickness
Core Design Contradiction:
Ease of operationVSLength of stationary object

Solution Approach 1:

The patent merges the under-shower unit with the toilet bowl structure, eliminating the need for a separate chamber. The shower arm and spray elements are integrated into the bowl design, allowing maintenance access from the front while maintaining structural integrity with reduced wall thickness.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The under-shower unit is segmented into modular components (shower arm, spray elements, mounting mechanism) that can be independently accessed and maintained. The shower arm is designed to be extendable and removable, allowing easy maintenance without requiring thick walls or separate chambers.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3788207B1Bidet toilet
Publication Date: 2026.03.04 PRESANO
  • EP3788207B1 patent drawingFigure 1~2
  • EP3788207B1 patent drawingFigure 3
  • EP3788207B1 patent drawingFigure 4

AI summary

Bidet toilet (1) comprising: a) a toilet body (2) having a rearwardly open cavity (3); b) a bidet-type module (4) which can be installed in and removed from the cavity (3) as a whole and which comprises a bidet-type unit (5) with a retractable and extendable shower arm (6); and c) a technical unit module (7) which can be installed in and removed from the cavity (3) as a whole and which comprises a boiler (8), a pump (9) and an electrical controller (10), wherein d) the bidet-type module (4) and the technical unit module (7) are encompassed by the cavity (3).