Composting toilet with drive

The compact composting toilet with a removable crank and bevel gear system addresses the operational challenges of existing toilets by enabling easy access and reduced effort in confined spaces, improving usability and efficiency.

DE202025000091U1Active Publication Date: 2026-06-03PHILIPP PETER
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Utility models
Current Assignee / Owner
PHILIPP PETER
Filing Date
2025-01-16
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing composting toilets with agitators are cumbersome to operate in confined spaces due to the need for a wide crank space and inconvenient body positioning, making them impractical for vehicles or boats, and require complex deflection mechanisms for accessible crank mounting.

Method used

A compact composting toilet design with a horizontally mounted agitator shaft and a removable crank mechanism, utilizing a bevel gear system or flexible shaft drive, allowing for reduced cranking force and easy access, with a secure agitator placement and plain bearings for the drive shaft.

Benefits of technology

Facilitates easy operation and storage of the crank, ensuring convenient access and efficient agitator engagement in confined spaces, reducing operational complexity and enhancing usability.

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Abstract

A separating toilet comprising a toilet housing and a separating attachment for the separate collection of urine and feces, with a drain for the urine and an opening for the downward-falling feces, and a removable container for the feces, wherein the container contains an agitator which is fixedly connected to the container and has a mechanical drive which drives the agitator shaft so that the feces mix with the substrate in the container, characterized in that a drive element or drive elements are mounted on the end of the agitator shaft outside the container, which enable the drive axis to be deflected at an angle to the axis of the agitator shaft.
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Description

[0001] The invention relates to specific features of a compact composting toilet equipped with a separating insert and comprising a container for feces and a container for urine. The separating insert allows urine and feces to be collected separately. In composting toilets, the feces container is filled with an absorbent substrate. The aim is to thoroughly mix the feces with the substrate, thereby reducing moisture and minimizing odor, and making them virtually invisible within the substrate. Ease of use is a crucial factor, as both the feces and urine containers must be removed from the toilet housing for emptying.

[0002] The composting toilets with an agitator currently available on the market are operated either manually or electrically. Most are manually operated with a crank, ratchet, or pedal. In toilets with a horizontally mounted agitator shaft, the crank is usually located on the side. However, since the crank requires a good hand's width of space, permanently installing such a toilet in a vehicle or boat, or in confined spaces, is often limited or even impossible.

[0003] The body position required to reach the toilet on the side in the lower rear section is also inconvenient.

[0004] It is therefore more practical to mount the crank on the housing where it is more easily accessible. However, this requires a deflection mechanism and a somewhat more complex system. The deflection can preferably be achieved using a bevel gear or, alternatively, bevel gears. With this solution, a reduction in gear ratio can also be achieved, allowing for the selection of a gear pair that enables operation with less cranking force. It is also possible to implement this with a flexible shaft. Drive via a belt, chain, or a twisted belt is another option.

[0005] Since the agitator is removed for emptying, and the gears must be engaged with each other after the agitator is inserted, it is important that the agitator always sits in the same place and is firmly anchored so that the tooth forces can be transmitted and the tooth backlash is maintained.

[0006] The drive shaft is mounted on the toilet housing. The drive shaft is designed so that a crank can be securely attached from the front. The crank is preferably removable and can be taken out and stored in or on the toilet when needed. This is achieved by providing a receptacle for the crank, preferably on the lid or the toilet housing. This ensures the crank is always readily accessible.

[0007] Plain bearings are preferably used as bearings for the drive shaft.

Claims

[1] A separating toilet comprising a toilet housing and a separating attachment for the separate collection of urine and feces, with a drain for the urine and an opening for the feces falling downwards, a container for the feces that can be removed from the housing, wherein the container contains an agitator which is fixedly connected to the container and has a mechanical drive which drives the agitator shaft so that the feces mix with the substrate in the container, characterized by , that a drive element or drive elements are attached to the end of the agitator shaft outside the container, which allow the drive axis to be deflected at an angle to the axis of the agitator shaft. [2] Toilet according to claim 1, characterized by , that at the end of the stirring shaft there is a bevel gear into which a second bevel gear engages, which is located on an externally mounted drive shaft. [3] Toilet according to claim 1, characterized by, that at the end of the stirring shaft there is a worm gear into which a second bevel gear engages, which is located on a drive shaft. [4] Toilet according to claim 1, characterized by that the deflection of the angle takes place with a flexible shaft. [5] Toilet according to claim 1, characterized by , that the deflection is carried out by a belt drive, or by a staggered belt drive.