JP4421752B2 - Toilet seat / toilet lid electric switchgear - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for opening and closing an electric opening and closing device for a toilet seat and a toilet lid.
[0002]
[Prior art]
Conventionally, this kind of toilet seat and toilet lid electric opening and closing device has been described in Japanese Utility Model Publication No. 6-33916. This is based on the open or closed position of the toilet seat or toilet lid as the origin, and the opening / closing drive speed is changed according to the angle formed by the toilet lid and toilet seat (especially when moving slowly at the open or closed position) And it moved smoothly.
[0003]
Further, a method for detecting the origin position is described in Japanese Patent Laid-Open No. 10-057276. In order to detect the open or closed position, the toilet seat or the toilet lid is rotated to detect that it has stopped in contact with the toilet bowl or flush tank, and the opening / closing drive speed is changed with this position as the origin. And it moved smoothly.
[0004]
In addition, a Hall IC is arranged near the open position or close position to detect that the toilet seat or toilet lid is approaching and decelerate.
[0005]
[Problems to be solved by the invention]
However, in the conventional configuration described above, the load on the toilet seat / toilet lid electric opening / closing device is reduced, for example, when the cover is attached to the toilet seat or the toilet lid and the inertial mass changes, or when the sliding resistance of the opening / closing drive system changes over time. There was a case where the toilet seat / toilet lid electric switchgear could not follow the change.
[0006]
When the drive motor of the toilet seat / toilet lid electric opening / closing device does not have a sufficient torque margin and does not have sufficient speed controllability, the same deceleration pattern cannot be controlled. That is, when driven by a stepping motor, the number of rotations is uniquely determined by the drive frequency, and if the drive torque is within the step-out torque, the deceleration operation can be accurately performed with a predetermined deceleration pattern. When a normal DC brush motor is used, the deceleration is determined by the balance with the load. Therefore, even if the open or closed position of the toilet seat or toilet lid is accurately detected, control is performed with a predetermined deceleration pattern. I couldn't.
[0007]
In particular, the toilet seat or toilet lid is a kind of inverted pendulum and is a normal load until it reaches the self-supporting angle, but if it exceeds the self-supporting angle, it becomes a negative load with the characteristic of moving to the open position by itself. There was an unstable element.
[0008]
Further, the toilet seat or toilet lid is set to reach the open position in about 1 to 2 seconds as the opening operation time, and the rotational speed is about 15 to 25 rpm, and the inertial force cannot be ignored. Therefore, in order to smoothly stop at the open position, it is necessary to reduce the applied voltage to the DC motor as much as possible from a position considerably before the self-standing angle.
[0009]
If a control method is used to reduce the applied voltage to the DC motor as much as possible from a position substantially before the self-supporting angle, the operation will go beyond the self-supporting angle, and as a result, the lid that should open will close again by its own weight. This is a control with many unstable elements. In addition, since it closes with its own weight, the impact impact between the toilet seat and the lid increases.
[0010]
[Means for Solving the Problems]
In order to solve the above-described conventional problems, the toilet seat / toilet lid electric opening and closing device of the present invention is provided with a brake region for the driving means before the open position, and a predetermined angle before the toilet seat and the toilet lid open position. It is equipped with a means for detecting the angular velocity of the toilet seat and toilet lid at the position and changing the start angle of the brake area at the next operation when the angular velocity is out of the predetermined speed range. By performing the operation, the toilet seat or toilet lid is controlled to stop smoothly at the open position.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Inventions of claim 1 or 2 detects the speed of the start point to start braking of the brake region, the brake speed evaluation position B in the middle region of the brake region, the angular velocity of the toilet seat or toilet lid The stop position of the toilet seat or toilet lid is estimated from the speed of the starting point at which braking is started and the brake speed in the middle area of the brake area, and this stop position is within a certain range from the toilet seat or toilet lid open position. Are provided with means for changing the start angle of the brake area at the next operation.
[0012]
Regardless of the variation in the initial speed and the variation in the speed evaluation position at the brake start position, the speed control can be accurately performed with respect to the open position .
[0013]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
[0014]
Example 1
FIG. 1 is an external view of a sanitary washing device equipped with a toilet seat / toilet lid electric switchgear according to a first embodiment of the present invention. FIG. 2 is a configuration diagram of the drive unit of the toilet seat / toilet lid electric opening / closing device. 3 is a configuration diagram of a drive control unit of the apparatus, and FIG. 4 is an explanatory diagram of operation characteristics of the apparatus.
[0015]
The following description focuses on the electric opening and closing of the toilet seat, but the same applies to the electric opening and closing of the toilet lid.
[0016]
In the figure, reference numeral 1 denotes a toilet, a washing water tank 2 is fixed behind the toilet 1 and a sanitary washing device 3 is mounted on the toilet 1. The sanitary washing device 3 incorporates a toilet seat / toilet lid electric opening / closing device 6 that electrically opens and closes the toilet seat 4 and the toilet lid 5. The toilet seat / toilet lid electric opening / closing device 6 includes a DC motor 7 using a commutator motor on the drive side of the toilet seat 4, a power transmission means 8 constituted by a speed reduction mechanism using a gear train, and an output side of the power transmission means 8. The angle detection means 9 is composed of a potentiometer inserted into the stool, and the drive side of the toilet lid 5 similarly has a DC motor 27, a power transmission means 28, and an angle detection means 29.
[0017]
The electric opening / closing control unit 10 will explain the toilet seat 4 side. The motor driving circuit 11 that controls the DC motor 7, the output port 12 to the motor driving circuit 11, and the rotation angle corresponding to the opening angle of the toilet seat 4 are detected. It is controlled by a microcomputer 14 having an input port 13 for taking in a signal from the angle detection means 9.
[0018]
The motor drive circuit 11 has a motor control by PWM control and a brake control function by short-circuiting the terminals of the DC motor 7.
[0019]
In order to move the toilet seat 4 smoothly, drive areas GH and HA in which the output of the DC motor 7 is changed are provided corresponding to the rotation angle of the toilet seat 4. The drive area GH has a duty of 100% and the drive area HA has a duty. It is driven at 60%. Further, before the open position C, a brake region AC is provided in which the terminals of the DC motor 7 are short-circuited and a regenerative brake is applied to decelerate the toilet seat 4.
[0020]
Next, the operation and action will be described. When an open signal is input to the microcomputer 14, a voltage is applied to the DC motor 7 in a predetermined routine to drive the toilet seat 4 in the opening direction. The toilet seat 4 is driven at a plurality of output levels depending on the rotation angle. In this embodiment, when the rotation angle is up to 50 degrees, it is driven with a duty of 100%, when the rotation angle exceeds 50 degrees, it is driven with a duty of 60%, and when the rotation angle reaches 70 degrees, the direct current is driven. The output of the motor 7 is stopped, the terminals of the DC motor 7 are short-circuited, and the motor is decelerated in the brake mode in which the regenerative braking action is generated, and reaches the open position.
[0021]
The toilet seat 4 is a kind of inverted pendulum, and when a neutral point near the open position is exceeded, a force that approaches the open position by its own weight is generated. When passing through the neutral point, the vehicle passes with a certain angular velocity, so that it is necessary to balance the inertial force due to this angular velocity, the force due to its own weight, and the braking by the DC motor 7.
[0022]
In this embodiment, the brake start position A is set to 20 degrees before the self-standing angle (90 degrees), the brake is applied from the brake start position A, and reaches the open position C of the toilet seat 4 with sufficient deceleration.
[0023]
(Example 2)
A second embodiment will be described with reference to FIGS. FIG. 4 is a block diagram of a drive control unit according to the second embodiment of the present invention, and FIG. Compared with the drive control unit of the first embodiment, the microcomputer 7 is different from the first embodiment in that an angular velocity calculating means 15 is provided and a brake speed evaluation position B for detecting the speed of the toilet seat 4 is provided in the brake region. .
[0024]
Next, the operation / action will be described. When the toilet seat 4 exceeds the neutral point near the open position, a force is generated that approaches the open position by its own weight. When passing through the neutral point, the vehicle passes with a certain angular velocity, so that it is necessary to balance the inertial force due to this angular velocity, the force due to its own weight, and the braking by the DC motor 7. Furthermore, the toilet bowl 1 to which the sanitary washing device 3 is attached is not necessarily installed horizontally, and may be attached with an inclination of several degrees in the front-rear direction. Thus, when it is attached with a certain inclination, a deviation occurs in the balance.
[0025]
In this embodiment, the angular velocity of the toilet seat 4 at the speed evaluation position B when the brake is applied and decelerated from the brake start position A is evaluated, and the brake is started in the direction in which the angular speed evaluation value falls within the allowable speed range. The position is corrected. This angular velocity evaluation value is corrected in such a way that when the sanitary washing device 3 is installed at a certain inclination angle, for example, when the toilet 1 is installed in a forward-downward direction, the angular velocity is lowered so that the brake position is shifted in a delayed manner. The toilet seat can be moved smoothly to the open position. If this angular velocity is not within the predetermined range at the next operation, this operation is repeated so that the angular velocity is within the predetermined range. If this operation is repeated a plurality of times, the open position can be reached smoothly thereafter.
[0026]
(Example 3)
FIG. 6 is a drive unit control configuration diagram of a sanitary washing device equipped with the toilet seat / toilet lid electric opening / closing device of the third embodiment of the present invention. The difference from the second embodiment is that this seating sensor 16 is provided. The seating sensor 16 detects a load caused by the user sitting on the toilet seat 4 and outputs a signal, which is input to the input port 17 of the microcomputer 14.
[0027]
The open position of the toilet lid 5 is a position when the seating sensor 16 is operated, and the toilet seat 4 is a position corrected by a predetermined angle from this open position, that is, a position corrected by an angle corresponding to the thickness of the toilet seat 4. . The bokeh speed evaluation position B, which is provided before the open position and detects the speed of the toilet seat 4, can be accurately set with reference to the open position C of the toilet seat 4 detected when the seating sensor 16 is activated.
[0028]
Example 4
FIG. 7 is an explanatory view of the operation of the sanitary washing device equipped with the toilet seat / toilet lid electric opening / closing device of the fourth embodiment of the present invention.
[0029]
The angular velocity at the start position A of the brake region of the toilet seat 4 and the angular velocity of the toilet seat 4 at the brake speed evaluation position B provided in the brake region are detected, and the angular velocity at the start position A of the brake region and within the brake region are detected. The stop position of the toilet seat 4 is estimated from the provided angular velocity at the brake speed evaluation position B, and the brake region is set during the next operation so that the stop position of the toilet seat 4 matches the open position of the toilet seat 4 within a certain range. The starting position A is changed.
[0030]
When the weight of the toilet seat 4 changes, such as when the cover is attached to the toilet seat 4, the inertia force of the toilet seat 4 changes and the speed gradient in the brake region changes. Therefore, the speed gradient in the brake region can be evaluated, and the stop position can be predicted from the speed gradient. When the predicted stop position is before the open position C, the brake start position A is delayed at the next operation. Conversely, when the predicted stop position is behind the open position C, the brake start position at the next operation. Advance A, toilet seat 4 several times
By opening the, the toilet seat 4 can be smoothly stopped at the open position.
[0031]
Regardless of the variation in the initial speed at the brake start position A and the variation in the brake speed evaluation position B, the speed control can be accurately performed with respect to the open position C.
[0032]
Note that by providing a plurality of brake speed evaluation positions B, the predicted stop position can be determined more accurately.
[0033]
(Example 5)
FIG. 8 is an explanatory view of the operation of the sanitary washing device equipped with the toilet seat / toilet lid electric opening / closing device of the fifth embodiment of the present invention. Since the toilet seat 4 and the toilet lid 5 are controlled by substantially the same control method, the control method of the toilet seat 4 will be described.
[0034]
When the toilet seat 4 is opened, a voltage in the reverse rotation direction is applied to the DC motor 7 by PWM control before the opening position C, so that the strength of the brake can be controlled. When the angular velocity before the opening position C of the toilet seat 4 is detected and the angular velocity is out of the predetermined speed range, the brake strength is controlled at the next operation, and the toilet seat 4 is smoothly stopped at the opening position C. It is something to be made.
[0035]
Compared with the method of applying a brake by short-circuiting the terminals of the DC motor 7, it is possible to apply a stronger brake, so that the brake start position can be delayed. The toilet seat 4 is a kind of inverted pendulum. If the toilet seat 4 does not reach the inverted position (equilibrium position), the toilet seat 4 may return to the reverse, and it is desirable to set the brake start position after the inverted position. Since the voltage in the reverse rotation direction is applied to the DC motor 7 by PWM control and the strength of the brake can be adjusted in a strong direction, the brake start position is set after the inverted position, and the toilet seat 4 is surely opened. Can be stopped.
[0036]
(Example 6)
FIG. 9 is an explanatory view of the operation of the sanitary washing device equipped with the toilet seat / toilet lid electric opening / closing device of the sixth embodiment of the present invention.
[0037]
The speed of the start point of the brake area and the angular speed of the toilet seat 4 at the brake speed evaluation position B provided in the brake area are detected, and the stop position of the toilet seat is estimated from the speed evaluation values of the two points. When the toilet seat is predicted not to reach the open position C, the voltage is set so as to rotate in the open position direction.
[0038]
If the initial speed at the brake start point A is insufficient, even if the brake is adjusted, the open position C may not be reached. In this case, a voltage is applied to the DC motor 7 to rotate in the open position direction. Thus, the toilet seat 4 can be reliably moved to the open position C.
[0039]
The voltage applied in the open position direction is a level that reliably rotates in the open position direction, and is preferably a value sufficiently suppressed by PWM control from the viewpoint of smooth operation.
[0040]
【The invention's effect】
As described above, according to the present invention, the toilet seat and the toilet lid can be smoothly stopped by providing an appropriate brake region in the region before the opening position of the toilet seat and the toilet lid.
[0041]
Further, the stability at the time of mounting can be improved by evaluating the speed at the brake speed evaluation position and feedback-controlling the variation in the weight of the toilet seat and the toilet lid, the variation in the attachment, and the like.
[Brief description of the drawings]
1 is an external view of a sanitary washing device equipped with a toilet seat / toilet lid electric switchgear according to Embodiment 1 of the present invention. FIG. 2 is a configuration diagram of a drive unit of the toilet seat / toilet lid electric switchgear.・ Composition diagram of the drive control unit of the toilet lid electric opening and closing device [FIG. 4] Configuration diagram of the drive control unit of the toilet seat and toilet lid electric opening and closing device in Embodiment 2 of the present invention [FIG. 5] Operation of the toilet seat and toilet lid electric opening and closing device FIG. 6 is a configuration diagram of the drive control unit of the toilet seat / toilet lid electric switchgear according to the third embodiment of the present invention. FIG. 7 is an operation characteristic explanatory diagram of the toilet seat / toilet lid electric switchgear according to the fourth embodiment of the present invention. FIG. 8 is an operation characteristic explanatory diagram of the toilet seat / toilet lid electric switchgear according to the fifth embodiment of the present invention. FIG. 9 is an operation characteristic explanatory diagram of the toilet seat / toilet lid electric switchgear according to the sixth embodiment of the present invention.
DESCRIPTION OF SYMBOLS 4 Toilet seat 5 Toilet lid 6 Toilet seat / toilet lid electric opening / closing device 7, 27 DC motor 8, 28 Power transmission means 9, 29 Angle detection means 10 Electric opening / closing control unit 11 Motor drive circuit

Claims (2)

  Driving means for opening and closing the toilet seat and / or toilet lid, power transmission means for transmitting the power of the driving means to the toilet seat and / or toilet lid, angle detection means provided in the power transmission means, In the toilet seat / toilet lid electric opening and closing device, comprising: an angular velocity calculating means for calculating an angular velocity by sampling an angle obtained from the angle detecting means at predetermined time intervals; and a motor drive circuit for controlling an output of the driving means. Before the toilet seat or toilet lid is opened, a brake region for generating a regenerative braking action is provided on the drive means, and the speed at the starting point of the brake region and at least one brake speed in the brake region are provided. An angular velocity of the toilet seat and / or toilet lid at the evaluation point is detected, and the speed of the starting point of the brake region and the brake region A stop position of the toilet seat or toilet lid is estimated from an evaluation value of the angular velocity of the toilet seat and / or toilet lid at a brake speed evaluation point provided at least at one place, and the stop position is the toilet seat or toilet lid. A toilet seat / toilet lid electric opening / closing device provided with an electric opening / closing control unit for changing the start angle of the brake region at the next operation so as to coincide with the open position of the vehicle within a certain range. Toilet seat toilet lid electric opening and closing device according to claim 1, wherein the driving means is a DC motor.

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