JPH0434790Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic opening/closing device for the seat of a Western-style toilet bowl, and is designed to enable smooth opening/closing operations.

[Prior art and its problems] As a conventional opening/closing device for this type of toilet seat,
2. Description of the Related Art A device is known that connects a support shaft of a toilet seat to an electric motor via a clutch mechanism, and opens and closes the toilet seat by changing the direction of rotation of the electric motor using a switch.

In such conventional devices, opening and closing operations are performed by simply switching the electric motor between forward and reverse rotation, and the same rotational force is applied to both opening and closing operations. Here, when opening the toilet seat, a sufficient torque is required to resist the weight of the toilet seat and raise it, so the electric motor needs to have sufficient output. On the other hand, if the same output is given to the electric motor when closing, the weight of the toilet seat will be added and the closing operation will speed up, causing the toilet seat to come into contact with the toilet bowl with force, creating a loud impact noise and possibly causing damage to the toilet seat. It was hot.

[Purpose of the invention] The purpose of this invention is to solve the above-mentioned problems. When opening and closing the toilet seat automatically, it realizes stable and smooth operation for both opening and closing, and reduces the generation of impact noise etc. The purpose is to provide a toilet seat opening/closing device that does not require a toilet seat.

[Example] The present invention will be explained below with reference to the drawings.

Reference numeral 1 denotes a toilet bowl, which is a well-known Western-style toilet bowl in the illustration. 2 is the toilet seat, its base 3
is rotatable by a support shaft 4, and
The support shaft 4 is fixed to the toilet bowl 1 at the legs 5, and
The toilet seat 2 can be opened and closed.
6 is a reducer connected to the support shaft 4 of the toilet seat 2; 7
is an electromagnetic clutch, and 8 is a DC motor.The rotation of the DC motor 8 is reduced in speed by a speed reducer 6 via the electromagnetic clutch 7, and is transmitted to the support shaft 4. 9
is the excitation coil of the electromagnetic clutch 7, 10 is the rotating shaft,
Reference numeral 11 denotes a rotor, the rotating shaft 12 of the electric motor 8 is connected to the rotating shaft 10, the rotating shaft 13 of the reducer 6 is connected to the rotor 11, and the collar 14 of the rotor 11 is connected when the excitation coil 9 is excited. and the collar 15 of the rotating shaft 10 are coupled to transmit rotation. 16 is a spring that always biases the toilet seat 2 in the open direction, and has an elastic force slightly smaller than the biasing force in the closing direction due to the weight of the toilet seat 2;
The other end is fixed to the leg 5 or the like to bias the toilet seat 2 in the opening direction.

FIG. 5 shows an example of the electric circuit of this embodiment, with 20
is a power supply, 21 is a transformer, 22 is a switching tap, and the switching tap 22 changes the secondary voltage of the transformer 21 to 24V.
The structure is such that it can be switched to 12V. 23 is a rectifier. Upper and lower limit switches 24 and 25 are opened and closed depending on the seat position so that they are opened when the toilet seat 2 is opened at the upper limit position and opened when the toilet seat 2 is closed at the lower limit position. Here, the board 24 attached to the 5 legs etc.
A reed switch is attached to the toilet seat 2 and controlled by a magnetic body 26 provided on the toilet seat 2. Reference numerals 27 and 28 indicate opening and closing switches serving as operation switches, which energize the DC motor 8 and the electromagnetic clutch 7 by reversing the polarity of rectified DC power. The toilet seat opening and closing switches 27 and 28 are interlocked with a changeover switch 30 that changes the voltage of the changeover tap 22, and apply the rated voltage (24V) to the DC motor 8 during the opening operation, and during the closing operation. When applying a voltage lower than the rated voltage (12V). Here, when a high voltage is applied to the DC motor 8, the number of revolutions and torque increase in approximately proportion to the high voltage, and as a result, sufficient torque is applied to raise the toilet seat 2 when the toilet seat 2 is opened, and when it is closed, The rotational capacity of the electric motor is lowered to suppress an increase in the descending speed due to the weight of the toilet seat being added to the drive system such as the reducer 6 and the electric motor 8 as the toilet seat 2 is lowered.

Next, the usage and operation will be explained. Opening switch 27 for automatically opening and closing the toilet seat 2
When the switch 30 is closed, the selector switch 30 is connected to the rated voltage (24V) side, and the rotation of the electric motor 8 causes the toilet seat 2 to rise, and the upper limit switch 24 is accordingly opened, stopping power supply and opening the toilet seat 2. hold in condition. Also, when the closing switch 28 is closed to lower the toilet seat 2, the changeover switch 3
0 supplies a voltage (12V) lower than the rated voltage of the electric motor 8, rotates the toilet seat in reverse at low capacity, gradually lowers the toilet seat, and stops the rotation of the electric motor when the lower limit switch 25 opens. At this time, since the toilet seat 2 is biased in the opening direction by the spring 16 described above, the force acting due to the weight of the toilet seat 2 is reduced.

Next, when opening and closing the toilet seat 2 manually, if the toilet seat 2 is moved up and down without operating the open/close switch, the electromagnetic clutch 7 is in a free state and can be opened and closed freely. .

[Effects of the invention] This invention is configured as described above, and has the following effects.

During the opening operation of the toilet seat, sufficient opening torque is obtained by driving the urging force of the urging means and the DC motor at high voltage, and the toilet seat can be opened quickly.

In addition, during the closing operation, the DC motor is driven at low voltage and low capacity in anticipation of the bias caused by the weight of the toilet seat, suppressing the increase in speed during descent. This can prevent situations such as making an impact sound or damaging the toilet seat at the moment of contact.

Note that by changing the voltage when the toilet seat is opened and closed, the rotation speed of the motor in the no-load state differs; when the toilet seat is opened, the speed is decelerated due to the weight load of the toilet seat, and when it is closed, the rotation speed is increased due to the force applied by the weight of the toilet seat. Therefore, there is no large difference between the actual opening speed and closing speed, and the opening and closing operations can be performed smoothly.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the use of this invention. Figures 2 and 3 are explanatory diagrams of the main part configuration. FIG. 4 is an explanatory diagram of the electromagnetic clutch section. FIG. 5 is an example of an electrical open circuit. 2 is a toilet seat, 4 is a spindle, 6 is a reducer, 7 is an electromagnetic clutch, 8 is an electric motor, 16 is a spring, 22 is a switching tap, 24 and 25 are upper and lower limit switches, 27 and 28 are toilet seat opening and toilet seat closing. Adult switch.

Claims (1)

[Scope of utility model registration request] A toilet seat is rotatably mounted on the toilet bowl, a DC motor is connected to the support shaft of the toilet seat via a reducer and an electromagnetic clutch, and the toilet seat is opened and closed by driving the DC motor with a toilet seat open switch and a toilet seat close switch. and a means for biasing the spindle in the opening direction and a means for energizing and driving the DC motor by switching the voltage to two high and low voltage levels, and the electromagnetic clutch is activated by turning on the toilet seat opening switch. The toilet seat is opened by energizing and driving the electric motor at high voltage, and when the toilet seat close switch is turned on, the electromagnetic clutch is energized and the electric motor is driven at low voltage to close the toilet seat. Toilet seat opening/closing device.