JP2555826Y2 - Toilet seat and toilet lid automatic opening and closing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic opening / closing device suitable for opening and closing a toilet seat and a toilet lid of a shower-type toilet, and more particularly, to improving the reliability of operation for obstacles during opening and closing of the toilet seat and the toilet lid. The present invention relates to a toilet seat and toilet lid automatic opening and closing device.

[0002]

2. Description of the Related Art Shower-type toilets without manual opening and closing operations of toilet seats and toilet lids have been proposed. Toilet seats and toilet lids (hereinafter referred to as toilet seats and the like) adopt a configuration in which one end in a substantially elliptical longitudinal direction is rotatable with a support end, and a load (rotation at the support end) is performed during the opening operation. The torque required for the shaft at the time is large, and the load is small during the closing operation. Conventionally, paying attention to this characteristic, an automatic opening / closing device for opening and closing a toilet seat of this type has been disclosed in, for example, Japanese Utility Model Laid-Open Publication No. 61-14709.
As disclosed in Japanese Patent Application Laid-Open No. 7, there is a technique in which the motor is driven at a rated voltage during the opening operation of the toilet seat, and is driven at a low voltage equal to or lower than the rated voltage during the closing operation of the toilet seat.

[0003] When the toilet seat and lid during opening and closing are stopped by an obstacle such as a person, the motor is overloaded, and the overload state continues, so that an overcurrent flows continuously and the motor is overloaded. The sub winding will burn out. Therefore, the above-mentioned publications and Japanese Utility Model Laid-Open Publication No. 55-148500 disclose a configuration in which a motor communicates with a rotating shaft supporting a toilet seat and a toilet lid via a deceleration means and a clutch.

[0004]

However, the clutch disclosed in the above-mentioned publication is a normal-pressure friction clutch such as a friction plate. At the time of abnormal load such as when an object is placed on the lid, a long-time overload state continues and becomes a problem.

[0005] In addition, the clutch of the type that separates the motor from the load when the load is overloaded requires a large-scale device ,
During the operation of the clutch, the motor has a higher current than normal.
It is not sufficient as a measure for motor protection and motor protection and cannot be adopted. Further, there is a motor with an overcurrent protection circuit, but there is a disadvantage that it is expensive. Accordingly, an object of the present invention is to provide an automatic toilet seat / toilet lid opening / closing apparatus capable of completely taking overload measures without loading a clutch or an overcurrent protection circuit.

[0006]

SUMMARY OF THE INVENTION The present invention provides a toilet lid and / or
A drive motor for opening and closing the toilet seat, the flight lid 及
And transmission means for power the decelerating transmission from beauty / or the drive motor to the seat, is configured to either route to the service lid and / or seat through the transfer means from the output shaft of the drive motor, A rotational movement detecting means for detecting the presence or absence of a rotational movement of the drive motor; and controlling a rotational direction of the drive motor to switch between an opening operation and a closing operation of a toilet lid and / or a toilet seat. And control means for stopping or reversely rotating the drive motor to stop or return the opening or closing operation of the toilet lid and / or toilet seat to the initial state when the detection information from indicates that there is no rotational movement. I have.

[0007] A DC brush motor, a stepping motor or the like is used as the driving motor.

[0008]

According to the above construction, the step of monitoring the detection information from the rotation detection means of the drive motor is input to the control means constituted by, for example, a microcomputer or the like, and the detection information from the rotation detection means is input to the control means. When showing no rotational movement,
The drive motor is stopped or reversely rotated. This allows
When the toilet lid and the toilet seat are stopped by an obstacle in the middle of the opening operation or the closing operation, the drive motor can be stopped or reversely rotated to return to the original fully closed position or fully opened position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIGS. 1 to 3, 4, 7, and 8 show the configuration of a mechanism of the automatic toilet seat and lid opening / closing device according to the present invention, and FIG. 9 shows the configuration of a circuit portion of the device. FIG. 7 is a schematic plan view of the entire apparatus.

First, FIGS. 1 and 2 show a body unit 11 fixedly provided at a rear portion of a toilet (not shown) and a toilet lid 1.
2 and the toilet seat 13 are shown. Toilet lid 12 and toilet seat 13
Is supported by a rotating shaft 14 protruding from the main unit 11 so as to be capable of opening and closing in a predetermined selection combination (selection of opening and closing both the toilet lid 12 and the toilet seat 13 and selection of opening and closing only the toilet lid 12). .

The body unit 11 includes a toilet lid 12 and a toilet seat 1.
A unit 15 for controlling the opening and closing of 3 is built in. The opening / closing unit 15 includes a drive motor 21 (hereinafter, referred to as a motor), and first, second, and third reduction means 22, 23, and 24 composed of a worm and a spur gear sequentially coupled to an output shaft 211 of the motor 21. The transmission means and an output gear 25 which is connected to the worm of the final reduction means 24 and is coaxially supported by the rotary shaft 14 are incorporated as main components.

By the way, the rotational motion detecting means 30 for detecting the presence or absence of the rotational motion of the drive motor 21 is constructed by directly attaching the object to be detected on the output shaft 211 side of the drive motor 21 and the detector to the opening / closing unit housing. Have been. Here, an orbital integration type FG permanent magnet 30a (hereinafter, referred to as an FG permanent magnet) is coaxially supported on an output shaft 211 as an object to be detected, and a Hall IC 30b is attached to the opening / closing unit housing as an object to be detected. As shown in FIG. 3, the combination of the FG permanent magnet 30a and the Hall IC 30b is formed by connecting a predetermined number of small arc-shaped magnets in an alternating polarity in a circular manner. The detection output from the Hall IC 30b is a clock signal having a constant frequency when the rotation speed is constant, as shown in FIG.

A mode detecting means 26 for selecting between the open operation mode and the closed operation mode is configured by attaching a detection target to the output gear 25 and a detection target to the opening / closing unit housing. The object to be detected is 180 of the north pole and the south pole.
° 2 divided permanent magnet 26a, the detection object is Hall IC2
6b. Two-part permanent magnet 26a and Hall IC 26b
Has a positional relationship as shown in FIG. That is, the entire operation angle range of the toilet lid 12 and the toilet seat 13 is 90 °, and the clockwise direction C in the drawing is the direction in which the toilet lid 12 and the toilet seat 13 open, and the opposite direction D is the closing direction. Lid 12
When the angle position when the toilet seat 13 is in the fully closed position is represented by an absolute angle of 0 °, and when the fully opened position is represented by an absolute angle of 90 °, 0 °
And the position of the Hall IC 26b at 90 ° are N pole and S pole.
It is a 45 ° symmetrical position about the pole boundary line (diameter line). Thereby, for example, at the time of the opening operation, as shown in 26b-C of FIG.
A signal which changes to a low level in the latter 45 ° angle range during the closing operation is output as a signal as shown in FIG. 26b-D opposite to the above signal 26b-C during the closing operation. . As a result, when the signal from the Hall IC 26b is at a high level, when the opening operation switch of the operation switch is turned on, the toilet lid is in the open position and does not operate, but operates only when the closing operation switch is ON. The same applies when the toilet lid is in the closed position.

The rotating shaft 14 penetrates so as to protrude from both sides of the opening / closing unit housing, and is pivotally supported so as to be capable of sliding and rotating in the thrust direction AB (see FIG. 1). A spring 28 is anchored between the projecting end and a boss 27 fixed to the opening / closing unit housing. The spring 28 is a torsion spring, one end of which is hung on the boss 27 and the other end of which is hung by being inserted into the rotating shaft 14. With this configuration, the toilet lid 12 and the toilet seat 1
3 is provided with a biasing force in the lid opening direction, and aims at reducing the torque in the opening operation direction. The spring 28
As will be described next, the resilient force also urges the rotating shaft 14 in the direction B separating from the toilet lid 12 and the toilet seat 13.

Next, apart from the gist of the present invention, the toilet lid 12 will be described.
Means for switching and opening and closing the toilet seat 13 to a predetermined selection combination by the rotating shaft 14 is configured as shown in FIG. This means switches whether the other end of the rotating shaft 14 is used as a support shaft for the toilet lid 12 and the toilet seat 13 or only the toilet lid 12 is used as a support shaft. At the other end of the rotating shaft 14, ridge-shaped projections 141 and 141 are formed in a radial direction at 180 ° facing positions. Perforations 121 and 131 having the same shape are formed in the side surface of the rear part of the toilet lid 12 and the toilet seat 13 corresponding to the shape of the other end. The other end having the protrusions 141 and 141 is in a state where the rotary shaft 14 is selectively slid in the thrust direction AB as described above, so that the other end has a state of loosely fitting only into the perforation 121 of the toilet lid 12 and the toilet lid 12 and the toilet seat. The state can be switched to a state in which the holes 13 are loosely fitted into the holes 131. Accordingly, when the toilet lid 12 and the toilet seat 13 are both opened, the other end of the rotating shaft 14 is loosely fitted into the perforations 121 and 131, and when only the toilet lid 12 is opened and closed, the other end of the rotating shaft 14 is closed. It is loosely fitted only in the hole 121. The thrust motion of the rotating shaft 14 is controlled by a coil 29 in which the rotating shaft 14 is interposed as a plunger (using a magnetic material on one end side of the rotating shaft) in the opening / closing unit 15.
In this embodiment, the spring 28 is used.
That is, when the other end of the rotating shaft 14 is loosely fitted in the holes 121 and 131, the coil 29 is excited, and the rotating shaft 14 slides in the direction A against the force of the spring 28.
4 is loosely fitted only in the hole 121, the coil 2
9 is non-excited, and the rotating shaft 14 is
Slide in the direction.

In FIG. 8, 16 is a hot air fan,
Reference numeral 17 denotes a nozzle for bidet cleaning and anal cleaning, reference numeral 18 denotes a hot water tank, reference numeral 19 denotes a water supply pipe, and reference numeral 20 denotes a cleaning flow control valve.
Next, the configuration of the circuit unit will be described with reference to FIG. FIG. 9 shows a configuration for exciting the motor 21, which is performed by the microcomputer 31. The Hall ICs 26b and 30b are each driven by a voltage source Vcc, and the output is guided to input terminals T1 and T2 of the microcomputer 31 via a predetermined interface circuit. The microcomputer 31 derives a signal 31a from the output terminal T3 to rotate the motor 21 forward (hereinafter, it is assumed that the direction coincides with the direction in which the toilet seat and the lid are opened), and outputs the signal 31a from the output terminal T4.
1 is inverted (hereinafter, it is assumed that the direction coincides with the direction in which the toilet seat and the lid are closed). Signals 31a and 3
1b is supplied to the first relay RY1 and the second relay RY2 via the drive circuit 32, respectively. Relay switch SW1 controlled by first relay RY1
When the first relay RY1 is not excited (hereinafter, referred to as OFF), the contact b is selectively connected, and when the first relay RY1 is excited (hereinafter, referred to as ON), the contact a is selectively connected. Second relay RY2
The same applies to the relay switch SW2 controlled by the switch. The relay switch SW1 is connected between one end of the motor 21 and the positive terminal of the DC power supply 33,
W2 is connected between the other end of the motor 21 and the negative terminal of the DC power supply 33.

The present invention is configured as described above. Next, the operation for an obstacle will be described with reference to FIGS.
FIG. 10 is a time chart showing the operation at the time of the normal opening operation, and FIG. 11 is a time chart showing the operation when there is an obstacle. When there is no obstacle, as shown in FIG. 10, for example, by operating the toilet seat / toilet lid opening / closing operation switch at time t0, signals 31a and 31b are generated, the first relay RY1 is turned on, and the second relay RY1 is turned on.
Relay RY2 is turned off, and the positive terminal of the DC power supply 33 →
Relay switch SW1 → motor 21 → relay switch S
Excitation current flows in the direction C 'to the motor 21 through the path from W2 to the negative terminal of the DC power supply 33, and the toilet lid 12 and the toilet seat 13 can be opened from the fully closed position to the fully opened position. At this time, since the clock signal output from the Hall IC 30b continues to be generated constantly and does not indicate a stop state due to an overload on the motor 21, the microcomputer 31 does not perform the opening / closing stop or the reverse rotation operation according to the present invention. During the closing operation, the first relay RY1 is turned off, the second relay RY2 is turned on, and the motor current flows in the direction D '.

For example, at the time of the opening operation, the toilet lid 1 being opened
This is the case when an obstacle such as a hand hits 2. That is, when an obstacle hits at time t1 in FIG. 11, the clock signal stops from that time. The microcomputer 31 recognizes that the clock signal has stopped, changes the signal 31a derived from the output terminal T3, and turns the first relay RY1 on.
Set to FF. As a result, the path of the motor current is cut off, the motor stops, and the toilet lid 12 and the toilet seat 13 stop at the angular position in contact with the obstacle.

Next, as another motor protection method according to the present invention, a method using a counter built in the microcomputer 31 will be described. FIGS. 12 and 13 show the operation when the counter in the microcomputer 31 is used. That is, in the present embodiment, the clock signal (n) from the initial position of the toilet lid 12 and the toilet seat 13 to the angular position corresponding to the time t1 at which the obstacle is hit is counted by the counter in the microcomputer 31, and after t1. After the time required to judge "there is an obstacle", the motor 21 is rotated in the reverse direction during the period of counting down by the same count number n.

In FIG. 13, when the toilet seat / toilet lid opening / closing operation switch is turned on in step S1, step S1 is performed.
2, the mode becomes the open operation mode or the close operation mode. When the microcomputer 31 outputs a signal for driving the motor 21 in step S2, the microcomputer 31 periodically executes step S3 (determination of the presence or absence of a clock signal). If it is determined in step S3 that there is no clock signal, the motor stop steps of steps S4 to S8 are executed. Step S4 → S5 → S8
Is a normal step with no obstacles. Step S
4 → S5 → S6 → S8 determines whether or not the set value of the clock signal pulse is counted when the opening operation or the closing operation is normally performed (S5). This is a step in which it is determined that the position has been returned to the fully open position or the fully closed position, and the motor is stopped. Step S4
→ S5 → S6 → S7 → S8 is a step of rotating the motor 21 from the position stopped by the obstacle.

As described above, according to the present embodiment, the drive motor
Lack of a clock signal corresponding to the rotation speed of the rotating shaft 14
How to open and close the toilet seat and / or toilet lid by detecting drop
Recognize the presence or absence of rotational movement in both directions. This
From the rotating shaft 41 to the toilet seat 13 and / or
The phenomenon that power transmission is instantaneously lost in the transmission path
Can be detected and an overcurrent can be applied to the drive motor 21.
In addition , highly reliable overload countermeasures can be taken.

[0022]

[Effects of the Invention] As described above, according to the present invention, an obstacle slips to the toilet seat / toilet lid during the opening operation and the closing operation .
When these are stopped, there is no need to put a load on the motor by stopping at the angular position or returning to the original initial position.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a mechanism of an automatic toilet seat and lid opening / closing device according to the present invention.

FIG. 2 is a configuration diagram of the apparatus of FIG. 1 viewed from a direction E.

FIG. 3 is an explanatory view illustrating a rotation detecting means used in the embodiment.

FIG. 4 is a signal diagram showing an output of the rotation detecting means.

FIG. 5 is an explanatory diagram for explaining a mode detection means.

FIG. 6 is a signal diagram showing an output of the mode detection means.

FIG. 7 is a perspective view showing the relationship between a rotating shaft, a toilet lid, and a toilet seat.

8 is an overall schematic diagram of the apparatus of FIG.

FIG. 9 is a circuit diagram showing a configuration of a circuit unit of the device of FIG. 1;

FIG. 10 is a time chart showing an opening operation of the apparatus of FIG. 1;

FIG. 11 is a time chart showing the closing operation of the device of FIG. 1;

FIG. 12 is a time chart showing another operation of the apparatus of FIG. 1;

FIG. 13 is a flowchart showing the operation of the embodiment.

[Explanation of symbols]

11─ body unit, 12─ toilet lid, 13─ toilet seat, 14─
Rotary shaft, 15─ open / close unit 15, 21─ motor, 2
2,23,24─ deceleration means (transmitting means), 25─ output gear, 26─ mode detecting means, 26A─ permanent magnet, 26b
{Hall IC, 28} Spring, 29} Coil, 30
─Rotation detection means. 31 ─ microcomputer, RY1 ─ first relay, RY2 ─ second relay, 33 ─ DC power supply 33, S
W1, SW2 relay switch.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Mitsuhiro Ohara 2-1-1 Asahi-cho, Kariya-shi, Aichi Prefecture Aisin Seiki Co., Ltd. (72) Kiyoshihiko Sakurai 4-3-1-3 Imaike, Chikusa-ku, Nagoya-shi, Aichi Prefecture Asai Building Sankyo Seiki Seisakusho Co., Ltd. Furuya Branch (56) References JP-A-1-139027 (JP, A) JP-A-3-59281 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A drive motor for opening and closing the toilet lid and / or seat, and transmission means for transmitting decelerating the power from the drive motor to the flight lid and / or seat, the output of the drive motor The toilet lid and / or via transmission means from the shaft
Is provided in any one of the paths to the toilet seat, a rotational motion detecting means for detecting the presence or absence of the rotational movement of the drive motor, and opening and closing the toilet lid and / or the toilet seat by controlling the rotational direction of the drive motor. performs switching operation, the detection information from the rotary movement detecting means when the indicating the absence of rotary motion, the flight lid 及 stop or reverse rotation of said drive motor
And a control means for stopping or returning the opening or closing operation of the toilet seat to the initial state.