JP2723804B2 - Automatic flusher for pushbutton urinals - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of driving a motor powered by a dry battery, activating a cam lever mechanism, and automatically pressing a flash valve push button to open a flash valve and perform cleaning. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push-button urinal automatic flusher for discharging water to a urinal, and more particularly, to a push-button urinal automatic flusher that saves cleansing water while maintaining a high cleanness of the urinal.

[0002]

2. Description of the Related Art Conventionally, a new urinal is equipped with an infrared or ultrasonic type human body detector, an electromagnetic valve, and an automatic flusher provided with a control unit for controlling the same, while an existing push button is provided. Without changing the urinal flush valve, the motor unit that is attached to the flush valve and that uses a dry cell as a power source based on the human body detection signal from the human detector is driven to operate the cam lever mechanism. Automatic flushers for retrofitting, in which flush water is discharged to a urinal by automatically pressing a flush valve push button, have begun to be used. This type of automatic flusher for urinals of the push button type has only a main cleaning function or a type having a pre-cleaning function and a main cleaning function having the same flushing water discharge time.

[0003]

Among the above-mentioned conventional automatic flushers for push-button urinals, the former type has no main cleaning and has only a main cleaning function. There is a problem that the cleanness is low. On the other hand, the latter type has a pre-cleaning function and a main cleaning function, but even when a plurality of urinals continuously use the same urinal, each urinal uses Since the pre-cleaning and the main cleaning are always performed, the urinal has a high degree of cleanliness, but there is a problem that a large amount of cleaning water is used.

Therefore, in the present invention, in a normal use state,
While shortening the discharge time of washing water during pre-washing compared to the time of main washing, when multiple users use the same urinal at short intervals, the pre-wash is automatically omitted and the main washing time is reduced. It is an object of the present invention to solve the problem of reducing flush water while maintaining cleanliness of the urinal by shortening the flush water.

[0005]

A technical means for solving the above problem is to drive a motor unit powered by a dry battery based on a human body detection signal from a human detection means for detecting a user, In an automatic flushing device that discharges flush water to a urinal by automatically pressing a flush valve push button by operating a cam lever mechanism, a timer that measures an elapsed time from a previous flush water discharge time is provided, If the measurement time of the timer exceeds the predetermined time, the pre-cleaning and the main cleaning which is longer than the discharge time of the cleaning water at the time of the pre-cleaning are performed while the discharge time of the cleaning water is short. In the case where the next cleaning is performed before the time is less than the above, the pre-cleaning is omitted and a control means for performing water-saving main cleaning shorter than the cleaning water discharge time in the main cleaning is provided.

[0006]

According to the push button type urinal automatic flusher having the above-mentioned structure, the control means performs the next use while the time measured by the timer for measuring the elapsed time from the previous flush water discharge is less than the predetermined time. When the urinal is used by the urinal and the next cleaning is performed, the pre-cleaning is omitted and the water-saving main cleaning shorter than the cleaning water discharge time of the main cleaning is performed, while the measurement time of the timer exceeds a predetermined time. When the next urinal uses the urinal later, pre-cleaning and main cleaning are performed.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a push-button urinal automatic flusher 1 attached to a push-button urinal flush valve. As shown in FIG. 1, in a push button type urinal automatic flusher 1, a front cover case 2 is fixed to a cover base 3 with screws 4, thereby protecting internal devices described later. . A manual push button 5 for manually pushing a flash valve push button described later is attached to the front recess 2A of the front cover case 2. Further, a human detector 8, which will be described later, is provided behind the front window 2B of the front cover case 2. The infrared detector radiated from the front window 2B receives reflected infrared light reflected by the user. It is configured to detect a human body.

FIG. 2 shows an automatic flusher 1 for a urinal of a push button type.
FIG. 3 is a plan view showing an arrangement of internal devices of the automatic flushing machine 1, and FIG. As shown in FIGS. 2 and 3, an existing push-button urinal flush valve 6 is located inside the front cover case 2, and the flush valve 6 has a flush valve push button 6A. It is protruding. When the flush valve push button 6A is pressed, flush water is discharged to a urinal (not shown).

In the drawing, a dry cell 7 is disposed on the left side of the push-button urinal flush valve 6, and a control box CBX containing a printed circuit board for a control circuit is disposed below the dry cell 7. Have been. Further, the human detector 8 mounted inside the front window 2B emits infrared rays from the front window 2B as described above, and detects the user by receiving the infrared rays reflected by the user. Is configured.

In the drawing, a motor unit 9 is disposed on the right side of the push-button urinal flush valve 6, and a motor is supplied from a control circuit in accordance with the state of detection of the user by the human detector 8. A drive current is supplied to 9A and driven. The motor unit 9 swings the lever 10 in the direction of the arrow shown in FIG. 2 by a cam mechanism described later, and a pressing amount adjusting bolt (push button pressing member) 11 attached to an intermediate portion of the lever 10.
Presses the flash valve push button 6A. As a result, the flush valve 6 is opened, and the flush water is discharged to the urinal (not shown).

The manual push button 5 for manually pushing the flash valve push button 6A is attached to the front recess 2A of the front cover case 2. The manual push button 5 is used when the life of the dry battery 7 has expired or when the motor 9A
It is provided as a backup when a failure occurs, and is guided by the front recess 2A of the front cover case 2, and is pushed along the front recess 2A when pressed by a finger. At the end of the manual push button 5, a push button back plate 5A is attached. When the manual push button 5 is pressed, the push button back plate 5A comes into contact with the base end of the pressing amount adjusting bolt 11. By pressing the pressing amount adjusting bolt 11 in contact with the lever 10 in the direction of the arrow by pressing the pressing amount adjusting bolt 11, the distal end of the pressing amount adjusting bolt 11 is brought into contact with the flash valve push button 6A and pressed. The flush valve 6 is opened, and the flush water is discharged to a urinal (not shown). When the manual push button 5 is not pressed, it automatically returns to a position substantially coincident with the surface of the front cover case 2 by the elastic force of the spring 12.

As shown in FIGS. 2 and 3, a main body base 13 for mounting the push-button type urinal automatic flusher 1 to the existing flush valve 6 is disposed so as to straddle the flush valve 6 from side to side. Have been. As is apparent from FIG. 3, the lower left portion of the main body base 13 in the drawing is bent horizontally, and a fulcrum shaft 14 serving as a center of rotation of the lever 10 is attached to the horizontal projection. ing.

One end of the lever 10 is rotatably attached to the fulcrum shaft 14, while the other end of the lever 10 is rotatable.
Line 15 is attached. This roller 15 is
Contact with the inner circumferential cam surface of the cylindrical cam 16 which is rotated by the rotary unit 9, and the lever 10 is turned on the fulcrum shaft 14 in accordance with the cam surface.
Is pivoted about the flash valve push button 6A in the direction of the flash valve push button 6A, so that the pressing amount adjusting bolt 11 attached to the intermediate portion of the lever 10 comes into contact with the flash valve push button 6A and presses it. The valve 6 is opened, and flush water is discharged to a urinal (not shown).

As shown in FIGS. 2 and 3, a dog 16A is formed integrally with the cylindrical cam 16 so as to protrude upward.
On the other hand, a limit switch LS which is turned on when it comes into contact with the dog 16 </ b> A with the rotation of the circular tube cam 16 is provided below the motor unit 9. The limit switch LS and the human detector 8 are connected to the input side of a control circuit mainly composed of a microcomputer, while the motor 9A of the motor unit 9 is connected to the output side of the control circuit. Connected.

The push-button urinal automatic flusher 1 constructed as described above has a flow chart described later (see FIG. 5).
Perform pre-cleaning, main cleaning, and water-saving main cleaning as shown in
The urinal wash water, the main wash water, and the water-saving main wash water are discharged into a urinal (not shown) to wash the urinal. Although not shown in FIGS. 2 and 3, the pre-cleaning function is not activated due to the setting conditions of the urinal (OFF).
A switch is provided so as to be operated from the outside of the front cover case 2 so as to perform the above operation or to operate the pre-cleaning function (ON).

FIG. 4 is a control block diagram for each of the above-described cleaning controls. As shown in FIG.
The human detector 8, the limit switch LS, and the changeover switch SW are electrically connected to the input side of a control circuit having the central control unit MCP, and the output side of the motor unit 9 is connected to the output side. The motor 9A is connected.

FIG. 5 is a cleaning control flow chart of a control circuit mainly constituted by the microcomputer MCP. Hereinafter, the washing control of the automatic flushing device 1 for a push button type urinal will be described in accordance with this flowchart. In step S1, when the user stands in front of the urinal, the light receiving sensor of the human detector 8 is turned on. When the human body detection signal is input to the control circuit, in step S2, the human detection timer of the microcomputer MCP starts.

In step S3, it is determined whether or not the elapsed time from the previous cleaning has exceeded a predetermined time T4 (two minutes). If not two minutes have elapsed yet, the process proceeds to step S20 while two minutes If it has elapsed, it is determined in step S4 whether the changeover switch SW is on. As a result of the determination, when the changeover switch SW is not turned on, the process proceeds to step S11 to skip the pre-cleaning control and directly perform the main cleaning control, while the changeover switch SW is turned on. In step S5, it is determined whether or not the human detection state is maintained.

If the result of determination in step S5 is that the human detection state remains, the flow advances to step S6 to determine whether the human detection state has passed a predetermined time T1 (3 seconds). If the human detection state has elapsed for 3 seconds or more, pre-cleaning control is performed. When the motor 9A is rotated as shown in step S7,
As the motor 9A rotates, the dog 16A comes into contact with the limit switch LS, and even if an ON signal is input from the limit switch LS, this signal is ignored as shown in step S8. In step S9, when the ON signal from the limit switch LS changes to off, the motor 9A is stopped as shown in step S10. That is,
The limit switch LS is turned on by the dog 16A during the rotation of the tube cam 16 by the motor unit 9, and the pressing amount adjusting bolt 11 contacts the flash valve push button 6A in the ON state. Is pressed, the flush valve 6 is opened, and flush water for pre-cleaning is discharged to a urinal (not shown). When the ON signal from the limit switch LS is turned off, the pressing amount adjusting bolt 11 is separated from the flash valve push button 6A, and the discharge of the washing water is stopped when the motor 9A is stopped. In this embodiment, the circular tube cam 16 is
The time for one rotation by the data unit 9 is 2 seconds.

After completion of the pre-cleaning, step S1 is performed.
As shown in FIG. 1, when the light receiving sensor of the human detector 8 is turned off, that is, when the user leaves the urinal, in step S12, the human detection timer of the microcomputer MCP sets the predetermined time T2 (8 seconds). ) It is determined whether or not the time has elapsed. If the time has elapsed, the flow shifts to the main cleaning control. In step S13, the motor 9A is rotated to
Is turned to output an ON signal from the limit switch LS as shown in step S14.
The motor 9A is stopped as shown in FIG. In this state, the pressing amount adjusting bolt 11 comes into contact with the flush valve push button 6A and presses the flush valve push button 6A, so that the flush valve 6 is opened, and the discharge of flush water for main flushing to a urinal (not shown) is started. As shown in step S16, the discharge of the cleaning water is continued until a predetermined time T3 (2 seconds) has elapsed.

After the discharge of the washing water is continued for 2 seconds, the motor 9A is rotated and the circular tube cam 16 is rotated as shown in step S17, and the rotation from the limit switch LS is performed as shown in step S18. When the ON signal changes to OFF, the motor 9A is stopped as shown in step S19, the discharge of the flush water for the main flush to the urinal is stopped, and the process returns to step S1.

On the other hand, if it is determined in step S3 that two minutes have not passed since the previous cleaning, the light receiving sensor of the human detector 8 is turned off in step S20, that is, the user Leaves the toilet, step S2
In step 1, it is determined whether or not a predetermined time T2 (8 seconds) has elapsed by a human detection timer of the microcomputer MCP. When the predetermined time has elapsed, water-saving main cleaning control is performed.

When the motor 9A is rotated as shown in step S22, the dog 16A comes into contact with the limit switch LS with the rotation of the motor 9A, and an ON signal from the limit switch LS is input. This signal is ignored as shown in step S23. While this ON signal is being input, flush water for the water-saving main wash is discharged to the urinal. In step S24, the limit switch LS
When the ON signal from the CPU has changed to OFF, step S25
After stopping the motor 9A and stopping the discharge of the wash water for the main flush to the urinal as shown in (1), step S1 is performed.
Return to That is, the same water-saving main cleaning control as the above-described pre-cleaning control is performed to conserve water.

[0024]

As described above, according to the present invention, a motor unit using a dry battery as a power source is driven based on a human body detection signal from human detection means for detecting a user, and a cam lever mechanism is operated. The automatic flushing device that discharges flush water to the urinal by automatically pressing the flush valve push button has a timer that measures the elapsed time from the previous flush water discharge, and the time measured by the timer If the time exceeds the predetermined time, the main cleaning is performed while the cleaning water discharge time is shorter than the pre-cleaning and the cleaning water discharge time during the pre-cleaning, while the measurement time of the timer is less than the predetermined time. When the next washing is performed, the pre-washing is omitted and the main washing is performed in order to perform water saving shorter than the flushing water discharge time. it can There is an effect that.

[Brief description of the drawings]

FIG. 1 is an external view of a push-button type urinal automatic flusher.

FIG. 2 is a plan view showing the internal configuration of a push-button type urinal automatic flusher.

FIG. 3 is a front view showing an internal configuration of an automatic flushing device for a urinal of a push button type.

FIG. 4 is a control block diagram of a push button type automatic urinal for a urinal.

FIG. 5 is a control flowchart of an automatic flushing device for a push button type urinal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic flusher for urinals of push button type 2 Front cover case 3 Cover base 6 Flash valve 6A Flash valve push button 8 Human detector 9 Motor unit 9A Motor 10 Lever 11 Pressing amount adjustment Bolt 15 Roller 16 Circular tube cam 16A Dog LS Limit switch MCP Microcomputer

Continuation of the front page (56) References JP-A-3-183832 (JP, A) JP-A-6-49884 (JP, A) JP-A-6-248673 (JP, A) JP-A-4-12571 (JP) , U)

Claims (2)

(57) [Claims] 1. A motor unit powered by a dry battery is driven based on a human body detection signal from a human detection means for detecting a user, a cam lever mechanism is operated, and a flash valve push button is automatically pressed. In an automatic flushing device that discharges flush water to the urinal by pressing, a timer that measures the elapsed time from the previous flush water discharge time is provided, and when the measured time of the timer exceeds a predetermined time, If the next cleaning is performed before the measurement time of the timer is less than a predetermined time while the main cleaning is performed before the cleaning water having a short discharge time of the cleaning water and the discharge time of the cleaning water at the time of the pre-cleaning is performed, the previous cleaning is performed. An automatic flusher for a push-button urinal, characterized by comprising control means for omitting flushing and performing water-saving main flushing that is shorter than a flush water discharge time in the main flushing. 2. The automatic flusher for a push-button urinal according to claim 1, wherein the control means makes the flush water discharge time of the main water-saving flush the same as the flush water discharge time of the pre-cleaning.