Toilet device

By incorporating a locking part and an output shaft limiting part in the transmission mechanism, the problems of spring friction resistance and abnormal noise in the electric opening and closing unit are solved, achieving more efficient opening and closing operation of toilet seats and toilet lids.

CN115868845BActive Publication Date: 2026-07-17TOTO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TOTO LTD
Filing Date
2022-09-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing toilet systems, the helical springs of the electric opening and closing units are prone to generating frictional resistance during rotation, which reduces the torque of the toilet seat or toilet lid and may produce abnormal noises.

Method used

By setting a locking part in the transmission mechanism, the movement of the end of the spring in the circumferential and radial directions is restricted, preventing the spring from contacting other parts of the electric opening and closing unit. A planetary gear mechanism is used to transmit rotational force, and a limiting part is set on the output shaft to prevent the spring from moving radially.

Benefits of technology

It effectively suppresses the frictional resistance and abnormal noise between the spring and the electric opening and closing unit, improves the durability of the electric opening and closing unit, and avoids the limitations of large spring size and design.

✦ Generated by Eureka AI based on patent content.

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    Figure CN115868845B_ABST
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Abstract

Provided is a toilet device capable of suppressing frictional resistance at a spring of an electric opening / closing unit. Provided is a toilet device characterized by having an electric opening / closing unit capable of opening and closing at least one of a toilet seat or a toilet cover, the electric opening / closing unit having: a housing; a motor housed in the housing; an output shaft having at least a portion protruding from the housing, the output shaft outputting rotation of the motor to one of the toilet seat and the toilet cover; a transmission mechanism housed in the housing, the transmission mechanism transmitting the rotation of the motor to the output shaft; and a spring housed in the housing, the spring including a coil portion in which a wire is wound in a spiral shape, the spring applying a force to the output shaft in a rotation direction of the output shaft, the transmission mechanism having an engagement portion engaged with the spring, the engagement portion engaged with an end portion of the spring on a transmission mechanism side, the end portion restricted in movement in a circumferential direction of the spring, and the end portion restricted in movement in a radial direction of the spring.
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