JP3584753B2 - Toilet seat and lid automatic opening and closing device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an opening / closing device for a toilet seat and a lid, and particularly provides a technique for fully opening a toilet seat and / or a toilet lid to an open end when manually opened.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a warm water flush toilet seat that opens and closes a toilet seat and / or a toilet lid via a transmission unit that reduces the power of a motor has been proposed. For example, Japanese Utility Model Application Laid-Open No. 62-164029 discloses an electric opening / closing device that shuts off the rotation of a motor with an electromagnetic clutch when a toilet seat and / or a lid is rotated to a fully opened state. An electric switchgear for stopping power supply has been proposed.
[0003]
[Problems to be solved by the invention]
In a conventional electric opening / closing device, a toilet seat and / or a toilet lid which is urged in a closing direction by its own weight, when opened by electric power, can be kept at a fully open position to absorb backlash and backlash of a hinge pin. However, if the opening operation is performed manually, the toilet seat and / or the lid may fall in the closing direction by the amount of backlash or the like due to backlash of the gears or backlash of the hinge part. Could not keep. In particular, if only the toilet seat is urged in the closing direction by the weight of the toilet seat, the toilet lid and the end of the toilet seat are wide open and the appearance is not good. In addition, it caused the user to feel uneasy. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a toilet seat and / or a toilet lid which are urged in a closing direction by their own weight, when the toilet seat and the toilet lid are manually opened when the toilet seat and the toilet lid are fully opened. It is an object of the present invention to provide a toilet seat / cloth lid electric opening / closing device that can be kept at a minimum.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, in the open end area, a toilet seat and / or a toilet lid urged in a closing direction by its own weight, a drive motor for opening and closing the toilet seat and / or a toilet lid, and the toilet seat and / or Or a transmission means for reducing and transmitting the power from the drive motor to the toilet lid, and a path from the output shaft of the drive motor to the toilet seat and / or the toilet lid via the transmission means, An angle detecting means for detecting an opening / closing angle of a toilet seat and / or a lid, and a control unit for controlling the drive motor, wherein when the toilet seat and / or the lid are not driven by a motor, the angle detector When the controller detects that the toilet seat and / or the toilet lid has rotated to the open end area, the controller drives the drive motor in the opening direction.
[0005]
The open end area is provided within an operating range of the toilet seat and / or the lid, and is provided in a certain angle range closer to the closing side than the full opening angle of the toilet seat and / or the lid. A limit switch, a reed switch, a rotary encoder, a Hall IC, an MR element, a potentiometer, and the like are used as the open / close detecting means for detecting the open / close state of the toilet seat and / or the lid.
[0006]
The purpose of driving in the opening direction is to eliminate backlash and backlash of the hinge portion, so that about 3 to 10 degrees is sufficient. Driving in the opening direction may be performed for a fixed time or may be performed for a fixed angle, and further, the motor is stopped by detecting that the toilet seat and / or the lid are not rotating in the driving direction. Is also good.
[0007]
According to the toilet seat and toilet lid automatic opening and closing device of the present invention, when the motor is not driven, it is detected that the toilet seat and / or toilet lid has been turned to the open end area, and the toilet seat and / or toilet lid is detected. Can be driven in the opening direction. Thereby, the toilet seat and / or the lid can be driven to the fully open position, and can be held at the fully open position.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention will be described below to further clarify the configuration and operation of the present invention described above. FIG. 1 is a block diagram of an automatic toilet seat / lid lid opening / closing device, FIG. 2 is a toilet seat that is urged in the open end region in the closing direction by its own weight by the amount of backlash, and FIG. 3 is a control flowchart.
[0009]
As shown in FIG. 1, the toilet seat 1 and / or the toilet lid 2 are rotated by the drive motor 4 in a clockwise or counterclockwise direction by a signal from the control unit 3, and transmitted through the transmission unit 5. 2 to rotate the toilet seat 1 and / or the toilet lid 2 in the opening direction or the closing direction.
[0010]
FIG. 2 shows the toilet seat 1 which is urged in the opening direction by the weight of the toilet seat in the closing direction. The same applies to the case of the stool lid 2. An open end area is provided on the closing side of the fully opened position A of the toilet seat 1. In the toilet seat 1 as shown in FIG. 2, even when the toilet seat 1 is in the fully opened position A, the position of the center of gravity of the toilet seat 1 is closer to the closing side than the center of rotation, so that the toilet seat 1 is biased to the closing side. When the toilet seat 1 is manually rotated to the open end and then released, the toilet seat 1 is urged in the closing direction by its own weight, and is rotated to the backlash of the gears and to the closing side of the backlash of the hinge portion to move to the position B. , The motor is stopped by the detent torque of the drive motor 4.
[0011]
In a state where the drive motor 4 is not rotating, that is, in a standby state, the control unit 3 determines that the toilet seat 1 is manually rotated to the open end area by a signal from the opening / closing detecting means 6 according to the flowchart shown in FIG. After a certain period of time has passed after reaching the region, the drive motor 4 is driven at a low speed in the opening direction for a certain period of time. Since the driving torque at this time may be smaller than when the opening operation is performed from the fully closed position, the control unit 3 controls the current value to the driving motor 4 to be smaller than that in the normal opening operation.
[0012]
The electric opening and closing device controlled in this way rotates the toilet seat 1 to the fully open position after absorbing backlash of the gear and backlash of the hinge portion. Accordingly, it is possible to hold the toilet seat 1 at the same position as when the electric opening operation is performed, and it is possible to prevent the toilet seat 1 from falling in an unnecessary closing direction due to backlash or the like. Therefore, the toilet seat 1 is in close contact with the toilet lid 2 and the appearance of the user is improved, and the feeling of anxiety of the user can be eliminated. It is considered that a person has released the toilet seat 1 because the vehicle is driven after a certain period of time after reaching the open end area. However, even if the toilet seat 1 is held, the driving torque is small and the vehicle is driven at a low speed. No injuries will occur.
[Brief description of the drawings]
FIG. 1 is a block diagram of a toilet seat and toilet lid automatic opening / closing device. FIG. 2 is a state diagram of a toilet seat that is biased in a closing direction by an equal weight in an open end region by its own weight. FIG. 3 is a control flow diagram.
DESCRIPTION OF SYMBOLS 1 ... Toilet seat 2 ... Toilet seat / lid lid 3 ... Control part 4 ... Drive motor 5 ... Transmission means 6 ... Angle detection means A ... Toilet seat fully open position B ... After the toilet seat is manually opened by gear backlash and the play of a hinge part. Position rotated in the closing direction

Claims (1)

A fixed angle range closer to the closing side than the full opening angle of the toilet seat and / or the toilet lid is defined as an open end area, and in this open end area, the toilet seat and / or the toilet lid urged in the closing direction by its own weight, and the toilet seat and / or the toilet lid. A drive motor for opening and closing operation of the toilet, a transmission means for reducing and transmitting the power from the drive motor to the toilet seat and / or the lid, and a toilet seat and / or a transmission shaft from the output shaft of the drive motor via the transmission means. Or a path to the toilet lid, comprising an angle detecting means for detecting the opening / closing angle of the toilet seat and / or the toilet lid, and a control unit for controlling the drive motor, wherein the toilet seat and / or the toilet lid are provided. However, when the signal of the angle detector detects that the toilet seat and / or the toilet lid has rotated to the open end area when not driven by the motor, the control unit sets the drive motor in the range of 3 to 10 °. in Toilet seat flight cover automatic opening and closing device is characterized in that rotating driving direction to the fully open position the toilet seat and / or toilet lid.

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