Bath for small spaces

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Solution Overview

Problem

Existing sanitary facilities in small spaces like mobile homes, aircraft, and tiny houses face issues with damp surfaces after shower use, limited space utilization, and simultaneous use by multiple users, particularly in designs with combined shower and toilet areas.

Innovation Solution

A sanitary device with a closable opening in the shower wall allows a bed area to extend into the shower space, using flexible or rigid panels to cover damp walls and separate shower and bed areas, ensuring no contact with damp surfaces and optimizing space usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If shower curtains or movable partitions are installed to prevent the entire sanitary room from becoming damp, then the spread of moisture is reduced, but the shower tray and walls remain wet requiring drying time

Engineering Contradiction:
Improvemoisture spreadVSAvoiddrying time
Core Design Contradiction:
Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The sanitary facility is segmented into distinct functional zones: a shower area with tray and walls, a toilet area, and a bed area. The closable opening with panel allows selective separation of these zones, enabling the shower area to be isolated during showering while allowing other areas to remain dry and usable.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A closable panel is introduced as an intermediary element that can be positioned to close the opening between the shower area and bed area. This panel acts as a barrier that prevents moisture migration while allowing the shower area to be accessed and used independently.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Area of stationary object

If a combined shower and toilet facility is used to save space, then space utilization is improved, but multiple users cannot use the facility simultaneously

Engineering Contradiction:
Improvesanitary facility footprintVSAvoidsimultaneous use capability
Core Design Contradiction:
Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The combined sanitary facility is segmented into functionally independent zones (shower area, toilet area, bed area) that can be accessed and used separately through the closable opening, enabling multiple users to utilize different functions simultaneously within the same compact space.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The closable opening with movable panel provides dynamic flexibility to the space configuration. The panel can be opened to allow access to the shower area from the bed area while the toilet area remains accessible from the exterior, enabling adaptable simultaneous use by multiple users.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If a shower tray is installed in the sanitary facility, then showering function is provided, but the space required is greater than for a toilet alone

Engineering Contradiction:
Improveshower functionVSAvoidsanitary facility area
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The shower area is merged with the bed area through the closable opening, allowing the shower tray to be positioned such that it shares space with the bed area when the panel is closed. This integration enables shower functionality without requiring a completely separate dedicated shower room.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The spatial relationship between the shower area and bed area is made dynamic through the closable panel. When the panel is closed, the shower area is isolated and can be used for showering; when opened, the bed area extends into the shower area, maximizing space utilization for different functions at different times.

Inventive Principle:
Principle #15Dynamics

4Area of stationary object

If the bed area extends into the shower area to maximize space usage, then space utilization is improved, but contact with damp shower walls cannot be avoided

Engineering Contradiction:
Improvebed area utilizationVSAvoidcontact with damp surfaces
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The bed area and shower area are segmented by the closable panel, which when closed, creates a physical barrier that prevents contact between the user and damp shower walls. This segmentation allows the bed area to extend into the shower area while maintaining protection from moisture through the panel barrier.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The closable panel serves as an intermediary barrier between the bed area and shower area. When closed, it prevents direct contact between the user in the bed area and the damp shower walls, while still allowing the bed area to occupy the same physical space as the shower area.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3932274B1Bath for small spaces
Publication Date: 2025.08.20 KRANEMANN KARL ROBERT
  • EP3932274B1 patent drawingFigure 1a
  • EP3932274B1 patent drawingFigure 1b
  • EP3932274B1 patent drawingFigure 2a

AI summary

The invention relates to a sanitary installation in small spaces, particularly in motorhomes, airplanes, yachts, or tiny houses, with at least one shower room and an adjacent sleeping area (bed), wherein, when the shower area is not in use for the bed, a part extending the adjacent sleeping area is inserted into the shower area, particularly by insertion, folding, pivoting, or the like, or the adjacent sleeping area is moved into the shower area, so that the entire required bed area is available, and wherein the toilet area is directly adjacent to the shower room and access to the shower area is via the toilet area, wherein the shower room has a closable opening in the shower wall at least in the direction of the bed area, the height of which is to be at least such asthat, in addition to the height of the lying surface, the necessary freedom of movement for the body part of the person lying on it is given, and wherein the opening in the horizontal cross-section is L-shaped, corner-shaped, semicircular, or elliptical.