Indoor Mobile Toilet Design - Bathtub

Currently, there is no complete solution directly targeting the design of a bathtub for indoor mobile toilets, but similar functionality can be achieved through functional integration and structural modifications, taking into account bathing, mobility, drainage, and spatial adaptability. Here are the specific design ideas:

1. Integrated Design of Bathtub and Shower Functions
Referencing the compact layout of fixed bathtubs, integrate the bathtub and shower functions. The bathtub adopts an elongated deep-soaking design (e.g., 1.2 meters in length and 70 cm in width), with water levels reaching above the shoulders to meet bathing needs. The showerhead is directly installed above the tub, supporting adjustable-angle pressurized design for seamless switching between bathing and showering. The drainage system uses a sunken drain outlet, allowing quick drainage after bathing by simply pulling out the plug, reducing water residue. For mobility, a drainage outlet can be reserved at the bottom of the bathtub, connected to a detachable hose for temporary drainage or external connection to a mobile water tank.

2. Mobile Structure and Spatial Adaptation Design
To provide mobility to the bathtub, refer to the modification methods of simple mobile toilets:

• Base Design: Use wooden boards or lightweight metal frames as the bathtub base, installing four universal wheels (with braking function) to ensure flexible movement and stable fixation. The base needs to reserve channels for drainage pipes to avoid damage from pipe compression during movement.
• Modular Assembly: If space is limited, adopt a segmented bathtub design (e.g., foldable or assembled acrylic material), which can be expanded for use and folded for movement to reduce volume. The assembly points need to be sealed to prevent water leakage.
• Space Optimization: For small bathrooms (e.g., 4㎡), prioritize compact bathtub sizes and utilize wall space to install foldable shower curtains or glass partitions for wet-dry separation, while reducing spatial obstructions during movement.

3. Material and Cleaning Maintenance

• Tub Material: Choose nano-glazed or high-density acrylic materials, which are smooth and stain-resistant, allowing easy cleaning of dirt and reducing cleaning frequency.
• Drainage System: Adopt anti-clogging designs, such as large-diameter drain outlets or built-in filters, to prevent hair and other debris from clogging the pipes. Ensure the drainage hose is not tangled during movement to prevent water leakage.
• Fixation and Safety: In the mobile state, the base needs to be fixed with braking devices to prevent the bathtub from sliding; it is recommended to use anti-slip mats or handrails during bathing to enhance safety.

Note: Such designs need to be combined with professional drainage solutions (e.g., mobile water tanks or external drainage pumps), and long-term use requires regular inspection of the stability of components such as universal wheels and pipe connections to ensure both functionality and safety are maintained.