Toilet seat device

1. A toilet seat device comprising:

a toilet seat;

an opening/closing device configured to open and close the toilet seat;

a detection sensor configured to detect seating of a user on the toilet seat; and

a controller configured to control the opening/closing device such that, when the toilet seat is in a closed state, the opening/closing device opens the toilet seat based on determination that the detection sensor is brought into a non-detection state before a predetermined seating determination time for determining the seating of the user on the toilet seat elapses after the detection sensor is brought into a detection state.

2. The toilet seat device according to claim 1 ,

wherein the opening/closing device opens and closes the toilet seat via driving of a motor, and

the controller controls the opening/closing device such that the opening/closing device stops the driving of the motor, based on determination that the motor is locked for a predetermined lock time after the controller controls the opening/closing device so as to open the toilet seat via the driving of the motor.

3. The toilet seat device according to claim 2 ,

wherein the detection sensor is configured to switch on/off of a mechanical contact thereof when a pressing force in a gravity direction is applied to the toilet seat.

4. The toilet seat device according to claim 3 ,

wherein the controller controls the opening/closing device such that the opening/closing device opens the toilet seat based on determination that the detection sensor is brought into the non-detection state after a predetermined erroneous detection time, which is shorter than the predetermined seating determination time, elapses after the detection sensor is brought into the detection state.

5. The toilet seat device according to claim 2 ,

wherein the controller controls the opening/closing device such that the opening/closing device opens the toilet seat based on determination that the detection sensor is brought into the non-detection state after a predetermined erroneous detection time, which is shorter than the predetermined seating determination time, elapses after the detection sensor is brought into the detection state.

6. The toilet seat device according to claim 2 ,

wherein the detection sensor is configured to switch on/off of a mechanical contact thereof when a pressing force in a gravity direction is applied to the toilet seat, and

the controller controls the opening/closing device such that the opening/closing device opens the toilet seat based on determination that the detection sensor is brought into the non-detection state after a predetermined erroneous detection time, which is shorter than the predetermined seating determination time and within which there is a possibility of erroneous detection due to chattering of the mechanical contact of the detection sensor, elapses after the detection sensor is brought into the detection state.

7. The toilet seat device according to claim 1 ,

wherein the detection sensor is configured to switch on/off of a mechanical contact thereof when a pressing force in a gravity direction is applied to the toilet seat.

8. The toilet seat device according to claim 7 ,

wherein the controller controls the opening/closing device such that the opening/closing device opens the toilet seat based on determination that the detection sensor is brought into the non-detection state after a predetermined erroneous detection time, which is shorter than the predetermined seating determination time, elapses after the detection sensor is brought into the detection state.

9. The toilet seat device according to claim 1 ,

wherein the controller controls the opening/closing device such that the opening/closing device opens the toilet seat based on determination that the detection sensor is brought into the non-detection state after a predetermined erroneous detection time, which is shorter than the predetermined seating determination time, elapses after the detection sensor is brought into the detection state.

10. The toilet seat device according to claim 1 ,

wherein the detection sensor is configured to switch on/off of a mechanical contact thereof when a pressing force in a gravity direction is applied to the toilet seat, and

the controller controls the opening/closing device such that the opening/closing device opens the toilet seat based on determination that the detection sensor is brought into the non-detection state after a predetermined erroneous detection time, which is shorter than the predetermined seating determination time and within which there is a possibility of erroneous detection due to chattering of the mechanical contact of the detection sensor, elapses after the detection sensor is brought into the detection state.