JP2002065511A - Motor-driven open/close device for toilet seat/lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly open/close a toilet seat/toilet lid in response to the change in the weight of the toilet seat/toilet lid. SOLUTION: Velocity evaluation points are set both on the opening side and closing side of the toilet seat 4. The load applied on the toilet seat 4 is evaluated by comparing the velocity on the closing side with a standard velocity, and the control of switching the duty of a DC motor 7 is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field 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]

2. Description of the Related Art Conventionally, as this kind of electric opening / closing device for a toilet seat and a toilet lid, there has been one disclosed in Japanese Patent Application Laid-Open No. 09-313404. This is to control the output torque of the motor in the next opening operation according to the difference between the speed between the two points in the opening operation process of the toilet seat or the toilet lid and the reference speed, thereby improving the accuracy of the opening speed control. Was something.

[0003]

In the above-mentioned conventional configuration,
It is assumed that the speed evaluation point is set close to the open position of the toilet seat or the toilet lid, which is important for ensuring smooth operation at the open position.

[0004] However, depending on the speed control level, for example, when the cover is attached to the toilet seat or the toilet lid and the weight is greatly increased, the vehicle may stall before reaching the speed evaluation point and may not reach the open position. If the speed evaluation point is not reached, the feedback control will not be established.

[0005] In addition, since the opening operation is performed once, the speed at this time is detected, and the result is fed back the next time, the operation is expected to be unstable at the first operation.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a speed evaluation point for evaluating the load of the toilet seat or the toilet lid near the closed position immediately after the opening operation of the toilet seat or the toilet lid is started. A speed evaluation point for smoothly stopping at the open position near the open position of the toilet seat or toilet lid is set on the toilet lid or toilet seat side, respectively.

By providing these speed evaluation points near the closed position and the open position, the load on the toilet seat or the toilet lid is evaluated at the time of the start of the opening operation, and the result is immediately reflected in the latter half of the opening operation. As a result, it is possible to control the toilet lid or the toilet seat so as to rise up.

[0008]

According to the first or second aspect of the present invention, a speed evaluation point is provided on the open position side and the closed position side when the toilet seat or the toilet lid is opened.

By providing the speed evaluation points on the open position side and the closed position side, the load on the toilet seat or the toilet lid is evaluated by the speed evaluation on the closed position side, and the speed evaluation on the open position side enables smooth evaluation at the open position. This is to determine whether or not it can be stopped.

By judging the load on the toilet seat or the toilet lid near the closed position, the result can be immediately reflected in the latter half of the opening operation, so that the control can be surely performed so as to stand up.

According to a third aspect of the present invention, an area for fully energizing the DC motor from a closed position to a position rotated by a predetermined angle from a closed position is provided, and a speed evaluation point A is provided in this area. Is compared with the reference speed to determine the width of the section to be driven at the high setting. The opening operation can be controlled by immediately feeding back the load on the toilet seat or the toilet lid.

According to a fourth or fifth aspect of the present invention, the range of the region in which the DC motor is driven at a high setting is set at two levels from the closed position, and the velocity reference value of the angular velocity of the toilet seat or the toilet lid at the velocity evaluation point A is set. If the angular velocity at the velocity evaluation point A is smaller than the velocity reference value, the larger value of the angle B, Bmax
And if the speed at the speed evaluation point A is higher than the speed reference value, a control means for selecting the smaller value Bmin of the angle B is provided.

A large load variation factor of the toilet seat or the lid is to judge whether each cover is attached or not. When a dedicated cover having a fixed load is used,
The operation can be reliably performed by the above-described binary determination.

According to a sixth aspect of the present invention, there is provided a seating sensor for detecting that a user is seated, wherein the closed position of the toilet seat according to the first aspect is defined as an angle of the toilet seat on which the seating sensor is operated, and The open position is a value corrected by a predetermined angle from the closed position of the toilet seat, and the actual closed position is detected, and the speed evaluation point A rotated by a predetermined angle from the closed position can be accurately determined. .

According to a seventh aspect of the present invention, an area in which the DC motor is weakly set and is driven for a predetermined time is set to a closed position side of a full energizing area set to a predetermined angle from the closed position of the toilet seat or the toilet lid. It is provided.

In the first region where the toilet seat or the lid is opened, a low-speed region is formed, so that the start is smooth and the power of the DC motor is low, so that the load such as the weight of the toilet seat or the lid is reduced. As a result, a difference in speed is likely to occur, and load determination is facilitated.

According to an eighth aspect of the present invention, the output of the DC motor is set from a weak setting to a strong setting from a closing position of a full energizing region set to a predetermined angle from a closing position of a toilet seat or a toilet lid to a predetermined angle. , A smooth changing area is provided, and a speed evaluation point is provided after the area.

Since the area where the toilet seat or the toilet lid is first opened and the area where the toilet seat is gradually accelerated is formed, the start-up becomes smooth. In addition, since the vehicle passes through the area where the power of the DC motor is suppressed, a difference in speed is easily generated with respect to the load such as the weight of the toilet seat or the toilet lid, and the load determination is easily performed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. Hereinafter, the electric opening and closing of the toilet seat will be mainly described, but the same applies to the electric opening and closing of the toilet lid.

(Embodiment 1) FIG. 1 is an external view of a sanitary washing apparatus equipped with a toilet seat and toilet lid electric opening / closing device according to a first embodiment of the present invention. FIG. 2 is a drive unit configuration diagram of the electric toilet seat and toilet lid opening and closing device. FIG. 3 is a configuration diagram of a drive control unit of the apparatus.

In FIG. 1, reference numeral 1 denotes a toilet, in which 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 and toilet lid electric opening / closing device 6 that opens and closes the toilet seat 4 and the toilet lid 5 electrically. The toilet seat and toilet lid electric opening and closing device 6 is a toilet seat 4
DC motor 7 using a commutator motor on the drive side of the motor, and power transmission means 8 constituted by a speed reduction mechanism using a gear train
And an angle detecting means 9 composed of a potentiometer inserted on the output side of the power transmitting means 8. The driving side of the toilet lid 5 also has a DC motor 27, a power transmitting means 28, and an angle detecting means 29. are doing.

The electric opening / closing control section 10 will be described on the toilet seat 4 side.
1, an output port 12 to the motor drive circuit 11,
The microcomputer 14 includes an input port 13 for receiving a signal from the angle detecting means 9 for detecting a rotation angle corresponding to the opening angle of the toilet seat 4.

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.

Then, in order to move the toilet seat 4 smoothly,
An area in which the output of the DC motor 7 is changed is provided in accordance with the rotation angle of the toilet seat 4, and a brake area for decelerating the toilet seat 4 is provided in an area before the open position.

Further, in order to control the toilet seat 4 to be in a sufficiently low speed region at the open position, a speed evaluation point D for detecting the speed of the toilet seat 4 is provided before the open position. A speed evaluation point A is provided for evaluating the load on the toilet seat 4.

Next, the operation and operation 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.

After the opening operation of the toilet seat 4 is started, the DC motor 7 is driven at a strong setting (for example, 100% duty). After passing through the speed evaluation point A, it is driven at a strong setting up to a point B.
Beyond point B, the motor enters a weakly set area (for example, 60% duty-) where the duty of the DC motor 7 is reduced, and reaches the open position C through a speed evaluation point D near the open position.

The angular velocities of the toilet seat 4 are set to two values for the open position side and the closed position side.
Since the evaluation is performed in terms of points, the determination of the load on the toilet seat 4 on the closed position side and the determination of the angular velocity for stopping the toilet seat 4 at the open position on the open position side can be reliably performed.

(Embodiment 2) This embodiment will be described with reference to FIG.
An area GB for driving the DC motor at a high setting from the closed position G of the toilet seat 4 to a position B rotated by a predetermined angle is provided, and the angle of the position B is opened and closed by the speed at the speed evaluation point A provided in the area GB. It is determined by the control unit 10.

In order to rotate the toilet seat 4 smoothly, from the horizontal position (closed position G) where the load becomes the largest to the point B, the toilet seat 4 is driven at a high setting (for example, 100% duty).
Beyond point B, weak setting (for example, 60% duty)
Drive with

If the load increases, the section driven by the high setting is made longer, and if the load becomes lighter, this section is set shorter.

The judgment of the load is performed at the speed of the speed evaluation point A. When the load is large, the speed becomes low, and when the load becomes light, the speed becomes high. Therefore, the relationship between the speed and the load is evaluated in advance. The load on the toilet seat 4 is evaluated as a table.

Since the load is determined in the region of the drive section with the strong setting of the DC motor 7 to determine the length of the drive section with the strong setting, the load on the toilet seat 4 is immediately reflected in the toilet seat opening / closing operation.

(Embodiment 3) FIG. 4 is a block diagram of a drive control unit according to a third embodiment of the present invention. The range of the region where the DC motor 4 is driven at the high setting is set at two levels from the closed position G. Compared with the speed reference value of the toilet seat 4 at the speed evaluation point A, if the angular velocity at the speed evaluation point A is smaller than the speed reference value, the larger value Bmax is selected. If it is larger than the reference value, the smaller value Bmin of the angle B
Is controlled by the electric open / close control unit 10 so as to select.

A large load variation factor of the toilet seat 4 or the toilet lid 5 is to determine whether or not each cover is attached. When a dedicated cover is used, the operation is reliably performed by the above-described binary determination. It is also possible to prevent malfunction due to intermediate values.

(Embodiment 4) FIG. 5 is a block diagram of a drive unit control according to a fourth embodiment of the present invention. The difference from the second embodiment is that the seating sensor 16 is provided.

In FIG. 5, reference numeral 16 denotes a seating sensor, which detects a load caused by the user sitting on the toilet seat 4 and outputs a signal. This signal is input to an input port 17 of the microcomputer 14. The closed position of the toilet seat 4 is at the closed position when the seating sensor 16 is operated, and the closed position of the toilet lid 5 is at a position corrected by a predetermined angle from the closed position of the toilet seat 4. The point provided near the closed position for detecting the angular velocity of the toilet seat 4 can be set at an accurate angle based on the position when the seating sensor 16 is operated.

(Embodiment 5) FIG. 6 is a drive unit control configuration diagram according to a fifth embodiment of the present invention. The difference from the second or third embodiment is that the output of the DC motor 7 is suppressed to a weak level (for example, 50% or less) in an area GB in which the toilet seat 4 is driven from the closed position to the open direction with the strong setting of the DC motor 7. The point is that a soft start area GS for driving for a predetermined time is provided.

Since the low speed region is formed in the first region where the toilet seat 4 is opened, the start is smooth. Further, since the output of the DC motor 7 is low, a difference in speed tends to occur with respect to the load such as the weight of the toilet seat 4 or the toilet lid 5, and the load determination can be easily performed.

Further, the stop torque of the DC motor 7 at the time of starting is very large, and when the DC motor 7 is operated at a duty of 100% at the time of starting, the load on the drive system becomes high. By applying a soft start, the load on the drive system at the time of startup can be reduced.

(Embodiment 6) FIG. 7 is a control block diagram of a drive unit according to a sixth embodiment of the present invention. The difference from the second or third embodiment is that a region GT is provided in which the toilet seat 4 is smoothly changed from a weak setting (for example, 50%) to a strong setting (for example, 100%) from a closed position to a predetermined angle from a weak setting (for example, 50%). , A speed evaluation point A is provided after the area GT.

In the first area where the toilet seat 4 is opened, the drive torque changes smoothly from the start to the constant speed area, the start becomes smooth, and the load on the drive system at the start can be reduced.

Also, since the load judgment of the toilet seat 4 is evaluated in a section of a fixed duty, the load judgment can be made reliably.

[0044]

The speed evaluation points at the time of opening the toilet seat or the toilet lid are provided on the open position side and the closed position side, and the angular velocity of the toilet seat or the toilet lid is detected by the speed evaluation points provided on the closed position side. By discriminating the magnitude of the load, the toilet seat and the toilet lid can be reliably started.

[Brief description of the drawings]

FIG. 1 is a schematic external view of a toilet seat and toilet lid electric opening / closing device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of the driving unit.

FIG. 3 is a configuration diagram of a drive control unit according to the first embodiment and the second embodiment of the present invention.

FIG. 4 is a configuration diagram of a drive control unit according to a third embodiment of the present invention.

FIG. 5 is a configuration diagram of a drive control unit according to a fourth embodiment of the present invention.

FIG. 6 is a configuration diagram of a drive control unit according to a fifth embodiment of the present invention.

FIG. 7 is a configuration diagram of a drive control unit according to a sixth embodiment of the present invention.

[Explanation of symbols]

 4 Toilet seat 5 Toilet lid 6 Toilet seat / toilet lid electric open / close device 7, 27 DC motor 8, 28 Power transmission means 9, 29 Angle detection means 10 Electric open / close control unit

Continuing on the front page (72) Inventor Makoto Nishimura 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 2D037 AB13 AD16

Claims (8)

[Claims] 1. A driving means for opening and closing a toilet seat and / or a toilet lid, a power transmission means for transmitting power of the DC motor to the toilet seat and / or the toilet lid, and a power transmission means. Angle detecting means, angular velocity calculating means for calculating an angular velocity by sampling the angle obtained by the angle detecting means at predetermined time intervals, and means for controlling the output of the driving means in accordance with the angle obtained by the angle detecting means. In the toilet seat / toilet lid electric opening / closing device, a speed evaluation point of the angular velocity at the time of opening the toilet seat and the toilet lid is set to the open position side and the closed position side of the toilet seat or the toilet lid.
Toilet lid electric opening and closing device. 2. The driving means is a DC motor.
The described toilet seat and toilet lid electric opening and closing device. 3. An area GB for driving the DC motor at a high setting up to a position B rotated by a predetermined angle from a closed position of a toilet seat or a toilet lid, and provided in the area GB.
3. The toilet seat according to claim 1, further comprising an opening / closing control unit that determines an angle of the position B based on a speed at the speed evaluation point A. 4.
Toilet lid electric opening and closing device. 4. An area GB for driving the DC motor at a high setting from a closed position of a toilet seat or a toilet lid to a position B rotated by a predetermined angle is provided in the area GB.
An opening / closing control unit that determines the angle of the position B based on the speed at the speed evaluation point A is provided. The range of the area where the driving means is driven at a high setting is set at two levels from the closed position. Is compared with the speed reference value of the angular speed, and if the angular speed at the speed evaluation point is smaller than the speed reference value, the larger value Bmax of the angle B is selected, and the speed at the speed evaluation point is the speed reference value. 2. The electric toilet seat and toilet lid opening / closing device according to claim 1, further comprising: an electric opening / closing control unit that selects a smaller value Bmin of the angle B if the angle B is larger than the value. 5. The electric toilet seat and toilet lid opening / closing device according to claim 4, wherein the driving means is a DC motor. 6. A seating sensor for detecting that a user is seated is provided, a closing position of the toilet seat is an angle when the seating sensor is operated, and a closing position of the toilet lid is a closing position of the toilet seat. 6. A value corrected by a predetermined amount from.
The electric toilet seat and toilet lid opening / closing device according to any one of the preceding claims. 7. An area GS which is driven for a predetermined time with the output of the DC motor set to a weak setting is provided on the closed position side of the area where the toilet is driven to a predetermined angle from the closed position of the toilet seat or the toilet lid with a strong setting. The toilet seat and toilet lid electric opening / closing device according to any one of claims 3 to 5. 8. An area GT for smoothly changing the output of the DC motor from a weak setting to a strong setting from a closed position of a toilet seat or a toilet lid to a predetermined angle, and a speed evaluation point A is provided after the area GT. The electric toilet seat and toilet lid opening / closing device according to any one of claims 3 to 5.