Toto Ltd.

Yoshiro Terada

Ryosuke Hayashi

Toshinari Yaoka

Yoichi Murase

Satoshi Kato

Kenji Hashidume

Eiji Fukuzawa

Hiroomi Miyamoto

Takayuki Tomura

Naohisa Tanaka

Seiichiro Inoue

A lifting and lowering device () for a toilet seat or a toilet cover has a swing shaft () provided on a swing center line (C) of a toilet seat () or a toilet cover () that swings around base end portions (), respectively, and rises. The device includes a lifting and lowering control unit () indirectly fixed to a toilet bowl main body (); an output shaft () that is provided on the swing center line (C), one end portion of which shaft being removably connected to the swing shaft () of the lifting and lowering control unit () and the other end portion being detacheably connected to the base end portion () of the toilet seat (); and a toilet seat transmission unit () containing a tortion spring () that urges the output shaft () in a lifting direction of the toilet seat (). The lifting and lowering device () for the toilet seat of toilet cover is relatively small in size and able to stabely hold the toilet seat or toilet cover in a raised position. Commonality of structural parts can be achieved depending on the magunitude of torque caused by the self weight of the toilet seat or toilet cover.

Opening/closing device for toilet seat or toilet lid, and transmission unit for the device

An automatic lifting and lowering device for a toilet seat or a toilet cover usable for a toilet seat provided with a function of washing a body with hot water, which requires reduced size and weight, includes a rotating shaft () rotated together with the toilet seat or the toilet cover, a drive motor () rotating the rotating shaft () in normal and reverse directions, and a speed reduction gear train (). The drive force of the drive motor () is transmitted to the rotating shaft () through the speed reduction gear train () to automatically lift and lower the toilet seat or toilet cover, whereby the automatic lifting and lowering device itself can be formed compact by using a planetary gear mechanism for the speed reduction gear train ().

Automatic toilet seat or toilet cover lifting and lowering device

A damper device includes a check valve operated to apply braking force to a rotary shaft having wing portions when rotated in a cylinder in one direction and, when the rotary shaft is rotated in the opposite direction, the check valve is not operated. Movement restricting flow passages for restricting the movement of a viscous fluid between front and rear-side oil chambers divided by the wing portions are formed between an inner wall of the cylinder and the wing portions, and a selective communication passage having the check valve is formed between the wing portions and one of two side walls forming the oil chambers, such that the side wall and the check valve can be rotated along with the rotation of the wing portions, thereby avoiding rotation of the check valve in contact with the inner wall of the cylinder, for pronged service life of the damper device.

Damper device

Growing community of inventors

Fukuoka, Japan

Yoshiro Terada