JPH10211121A - Motor-driven opening and closing device for toilet seat and toilet cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly open and close a toilet seat or a toilet cover even when its weight fluctuates. SOLUTION: This motor-driven opening and closing device for the toilet seat or the toilet cover is provided with a detecting member 84 detecting the rotating position of a rotating body being the toilet seat or a toilet cover and a control circuit controlling the driving torque of a motor 80 according to the output of the member 84 and setting the driving torque at the time of next opening/closing from time required for opening/closing the rotating body. As the driving torque can be corrected by catching the change of the weight of the rotating body by the change of time required for opening/closing even when the weight of the rotating body changes by the mounting of a cover cloth, etc., driving is smooth and free from a shock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric opening and closing device for electrically opening and closing a toilet seat and a toilet lid.

[0002]

2. Description of the Related Art In opening and closing a toilet seat and a toilet lid in a toilet bowl, the hip must be bent and bent, but the above operation is electrically operated for a person who has a painful or difficult operation. Is provided. In this case, a switch that can be placed in an easy-to-operate position or an open / close instruction can be issued using a remote control device,
The burden on the user can be reduced.

[0003] Since the toilet seat or the lid is not stopped in the middle of opening and closing, when the toilet seat or the toilet lid is opened and closed by the motor, the motor is driven only while the switch is operated. Rather than doing so, it is preferable that the switch be opened once when the open switch is pressed and closed once when the close switch is pressed once. A switch for detection, such as a limit switch, is provided to rotate the motor in the direction specified by the open / close switch, and the motor is stopped by the operation of the switch for detection, thereby opening and closing the toilet seat or the toilet lid. .

[0004] Here, the toilet seat and the toilet lid with the rear end pivotally supported are substantially horizontal when closed, and substantially vertical when opened. In the case of driving, in the case of opening, the force required at the start of opening becomes the largest, and a small force is required at the end of opening. For this reason, in the above-described conventional example in which the start and stop of the motor are simply controlled, the opening / closing operation is not smooth.

[0005] For this purpose, it is conceivable to control a driving torque of a motor in accordance with an output of the detecting member for detecting the rotating position of the rotating body and the detecting member. When the toilet seat or lid is closed and in the horizontal position, the motor is operated with a large driving torque, and when the toilet seat or lid is near the end of opening, the motor is operated with a small driving torque.

[0006]

The opening / closing operation can be made smooth and shock-free by changing the driving torque in accordance with the rotating position of the rotating body. A cover is often attached to the lid, and the rotating body becomes heavy when such a cover is attached. Some things cannot be done. Conversely, if the drive torque is set to a large value assuming that the cover is attached, a shock or noise will occur at the end of the opening and closing operation. In addition, since there are various types of covers and the weight is not constant, smooth operation is not always obtained even if the cover is mounted and set.

[0007] The present invention has been made in view of such a point, and its object is to provide a toilet seat (or toilet lid).
It is an object of the present invention to provide an electric opening / closing device for a toilet seat or a toilet lid which can smoothly open and close even if the weight of the toilet seat fluctuates.

[0008]

According to the present invention, there is provided a detecting member for detecting a rotating position of a rotating body which is a toilet seat or a toilet lid, and a drive torque of a motor is controlled in accordance with an output of the detecting member. And a control circuit for setting a driving torque for the next opening / closing from the time required for opening / closing the rotating body. Since the motor is operated with the driving torque according to the rotating position of the rotating body, it is possible to perform smooth and shock-free driving, and even if the weight of the rotating body is changed by attaching a cover or the like. In addition, since the change in the weight is captured by the change in the time required for opening and closing, and the drive torque is corrected, the drive can be performed smoothly and without shock.

Here, the control circuit controls the opening / closing drive immediately after the power is turned on to the maximum torque, and sets the drive torque for the next and subsequent opening / closing from the time required for opening / closing at this time. May be measured each time to set the driving torque for the next opening and closing. It is also preferable that the time required for opening and closing to a predetermined position during the opening and closing operation is measured every time, and the drive torque for opening and closing after the predetermined position is corrected. It is possible to reliably respond to a change in load.

The control circuit may change the driving torque according to the room temperature input from the room temperature detecting means. If the room temperature decreases, the operating resistance tends to increase, but this point can be dealt with.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described. FIG. 2 shows a toilet seat 2 and a toilet lid 3 in FIG.
Is a support to be mounted, and the support 1 may be a toilet or an equipment mounted on the toilet, for example, a local cleaning device. The support 1 has collars 6 on opposite surfaces, respectively.
7 and a toilet seat drive shaft 4 and a toilet lid drive shaft 5 that penetrate the collars 6 and 7, respectively, and these two drive shafts 4 and 5 are respectively disposed on the left and right in the support body 1. The motor blocks 8, 8 are detachably connected.

The toilet seat 2 has bearing portions 20 and 25 projecting upward from the left and right upper surfaces at the rear ends thereof.
Reference numeral 0 is connected to the toilet seat drive shaft 4, and the bearing 25 is rotatably mounted on the collar 7 and is opened and closed by the rotation drive of the toilet seat drive shaft 4. The toilet lid 3 has bearing portions 30 and 35 protruding downward from the left and right lower surfaces of the rear ends thereof, and the bearing portion 30 is rotatably mounted on the shaft portion 9 provided on the toilet seat 2. Is connected to the toilet lid drive shaft 5 and is opened and closed by the rotational drive of the toilet lid drive shaft 5.

FIG. 3 shows a motor block 8 containing motors 80 for opening and closing the toilet seat 2 and the toilet lid 3. The rotation of the motor 80 is transmitted to a final gear 82 to which the toilet seat drive shaft 4 or the toilet lid drive shaft 5 is inserted and connected via a speed reduction unit 81 constituted by a timing belt or gear. Is provided with a slit plate 83 having a plurality of slits. Further, a photo interrupter 84 whose optical path is opened and closed with the rotation of the slit plate 83 is provided in a gear case 89 in which these members are accommodated.

FIGS. 4 and 5 show the relationship between the open / close position of the toilet lid 3 and the rotational position of the slit plate 83. FIG. When the toilet lid 3 is closed as shown in FIG. 4 (a), the notch in the slit plate 83 is inserted into the photo interrupter 8 as shown in FIG. 5 (a).
4 and the output of the photo interrupter 84 is off. When the toilet lid 3 is opened as shown in FIGS. 4B and 4C, the slit plate 83 is opened as shown in FIGS. 5B and 5C.
The rotation of the photo interrupter 84 repeatedly turns on and off, and as shown in FIG. 4D, when the toilet lid 3 is open, the optical path of the photo interrupter 84 is blocked and the output is on. Between the state shown in FIG. 5A and the state shown in FIG. 5D, the photo-interrupter 84 repeatedly turns on and off a plurality of times as shown in FIG. Although the opening and closing of the toilet lid 3 has been described, the same applies to the opening and closing of the toilet seat 2.

Here, the motor 80 of each motor block 8 has its rotation direction and driving torque controlled by a control circuit (not shown) composed of a microcomputer to which the photo interrupter 84 is connected. I have. The control circuit that performs the drive torque by duty control among the controls will be described. When the output of the photo interrupter 84 is off, the control circuit regards the toilet seat 2 and the toilet lid 3 as being closed. When an instruction to open is given, the motor 80 is first driven with a predetermined duty a, and the duty is changed to b, c, d, e each time an ON pulse of the output of the photo interrupter 84 is received, as shown in FIG. Then, when the last pulse (pulse 5) is received, driving at a predetermined duty f is performed for n hours to stop the motor 80.

On the other hand, if the output of the photointerrupter 84 is on while the motor 80 is not driven, it is considered that the toilet seat 2 or the toilet lid 3 is open, and the motor 80 is driven at the duty f.
And the photointerrupter 84 changes the duty to e, d, c, and b each time it receives an output on-pulse, and after receiving the last pulse, drives at a predetermined duty a for m hours. And the motor 80 is stopped.

The duty is sequentially switched by counting the on-pulse of the output of the photointerrupter 84. For this purpose, it is necessary to operate the motor 80 with a driving torque corresponding to the rotational position of the toilet seat 2 or the toilet lid 3. As a result, the rotation can be made smooth and shock-free at an appropriate speed. It should be noted that the opening position and the closing position are not strictly defined, but are controlled by adding a time component of n hours or m hours, when the cover is attached to the toilet seat 2 or the toilet lid 3 depending on the thickness thereof. This is in view of the shift between the open position and the closed position.

When the cover is attached as described above, the weight of the toilet seat 2 and the toilet lid 3 varies. Some toilet seats 2 and toilet lids 3 have different sizes, and the weight changes depending on both sizes. Since the torque required for rotational driving varies with the difference in weight, a learning function for weight is provided here. In other words, the control circuit previously stores data on the numerical values of a to f, n (m) as a table, and a plurality of tables are provided as shown in the following table. A is a table for the lightest case, and F is a table for the heaviest case.

[0019]

[Table 1]

When the switching operation is performed for the first time by being connected to the power supply, the driving of the motor 80 is controlled by the data a to f, n (m) of the F table, which is the maximum duty. The time T taken from the (pulse 1) to the arrival of the last pulse (pulse 5) is measured. For the opening / closing operation from the next time, the table is selected from the table according to the length of the time T, such as the F table if the time T is equal to or longer than the predetermined time, and the A table if the time T is extremely short. The drive of the motor 80 is controlled using the data in the appropriate table. For this reason, even if the weight of the toilet seat 2 or the toilet lid 3 changes due to the attachment or detachment of the cover, the opening / closing device has the above-described learning function. This allows smooth and shock-free opening and closing.

When the room temperature is lowered, the drive efficiency is reduced by hardening of the lubricating grease.
If the motor is driven with a torque close to the minimum required for opening and closing, there is a possibility that opening and closing cannot be performed, such as in the early morning of winter. For this purpose, as shown in FIG. 8, the measurement of the room temperature C is also performed when the time T is measured, and the measurement of the current room temperature Cn is performed when an opening / closing instruction is received. The table may be shifted by one (or two) based on the magnitude relation. Also, instead of shifting according to the magnitude relationship between the room temperature C and the current room temperature Cn, when selecting the table, the current room temperature Cn is used.
For example, the shift may be determined depending on whether is less than 10 ° C., 10 ° C. or more and less than 20 ° C., or 20 ° C. or more.

It is to be noted that the opening / closing time T is measured only immediately after the power is turned on, and the operation is not performed based on the selected table from the next time onward, but the opening / closing time T is measured each time and the next table is determined from the measured value. You may make it. However, when the weight changes in a direction that increases the weight, such as when the cover is attached from the state without the cover, it may not be possible to open and close, and eventually, as shown in FIG. Since it is necessary to operate at a duty, there is almost no problem even if learning is performed only immediately after power-on (immediately after reset).

FIG. 9 shows the time T required for the current opening / closing operation.
n is measured during the opening and closing operation, and the drive torque until the end of the opening and closing operation is corrected from the value of the time Tn. Although the figure shows that the final value f is corrected from the times T and Tn from the pulse 1 to the pulse 5, for example, from the time from the pulse 1 to the pulse 2, the following c, d and e are corrected. , F are more preferably corrected.

[0024]

As described above, according to the present invention, the motor can be operated with the driving torque corresponding to the rotating position of the rotating body, and the electric opening and closing drive can be performed smoothly and without shock. In addition, the control circuit sets the drive torque for the next opening and closing based on the time required to open and close the rotating body, so that even if the weight of the rotating body changes due to the mounting of the cover, etc. In order to correct the drive torque by capturing the change in time required for the drive, smooth and shock-free drive can be performed.

In this case, if the control circuit causes the opening and closing drive immediately after the power is turned on to be performed with the maximum torque, and sets the drive torque for the next and subsequent opening and closing based on the time required for opening and closing at this time, Since the rotating body can be opened and closed even when the weight suddenly becomes heavy due to the mounting, the learning function can be reliably operated. If the time required for opening and closing is measured every time and the driving torque for the next opening and closing is set, it is possible to quickly respond to a load change.

Further, when the time required for opening and closing to the predetermined position during the opening and closing operation is measured each time and the drive torque for opening and closing after the predetermined position is corrected, it is possible to reliably cope with a change in load. Becomes When the control circuit changes the driving torque according to the room temperature input from the room temperature detecting means, it is possible to avoid the influence of the increase and decrease of the operating resistance due to the room temperature.

[Brief description of the drawings]

FIG. 1 is a flowchart showing an operation of an example of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a front view of the same motor block.

FIGS. 4 (a), (b), (c) and (d) are explanatory views showing opening and closing of a toilet lid of the above.

FIGS. 5 (a), (b), (c) and (d) are explanatory views showing the operation of the photointerrupter and the slit plate in the above.

FIG. 6 is an explanatory diagram of output of the photointerrupter and motor control according to the first embodiment.

FIG. 7 is a flowchart showing the operation of the above.

FIG. 8 is a flowchart of an operation of an example of another embodiment.

FIG. 9 is a flowchart of an operation of an example of another embodiment.

[Explanation of symbols]

 2 Toilet seat 3 Toilet lid 8 Motor block

Claims (5)

[Claims] A rotating member, which is a toilet seat or a toilet lid, is driven by a motor to open and close, and includes a detecting member for detecting a rotating position of the rotating member, and driving of the motor in accordance with an output of the detecting member. A control circuit for controlling the torque and setting a drive torque for the next opening / closing based on the time required for opening / closing the rotating body. 2. The control circuit according to claim 1, wherein the opening and closing drive immediately after the power is turned on is performed with a maximum torque, and the drive torque for the next and subsequent opening and closing is set from the time required for the opening and closing at this time. An electric opening / closing device for a toilet seat or a toilet lid according to claim 1. 3. The electric opening and closing device for a toilet seat or a toilet lid according to claim 1, wherein the control circuit measures a time required for opening and closing each time and sets a driving torque for the next opening and closing. . 4. The control circuit according to claim 1, wherein the control circuit measures a time required for opening and closing to a predetermined position during the opening and closing operation each time and corrects a driving torque for opening and closing after the predetermined position. 4. The electric opening / closing device for a toilet seat or a toilet lid according to 1, 2, or 3. 5. The electric circuit for a toilet seat or a toilet lid according to claim 1, wherein the control circuit changes the driving torque in accordance with the room temperature inputted from the room temperature detecting means. Switchgear.