JPH0310223Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an automatic flushing device for urinals that can be automated by simply modifying the existing manual flush valve without making any changes. It is something.

[Conventional technology]

Many automatic flushing devices for urinals have been used in the past, and in recent years various improvements have been made to make them more effective and to save water.

The mainstream of these automatic flushing devices is a combination of a sensor, a control device, and a solenoid valve, and many of them are excellent as new devices. However, looking at the current situation in Japan, there are many manually operated urinals that have a flush system, and in order to make such a type of urinal flush automatically, it is necessary to replace the urinal itself. At least temporarily, the water must be cut off and piping work and flush valves must be changed.

Among the conventional technologies, there are only a few that have focused on automating existing water washing equipment, and there are only a few documents related to this, such as Utility Model Opening in 1983-
The devices disclosed in Japanese Utility Model Publication No. 24389 and Japanese Utility Model Application Publication No. 55-24390 are mentioned, but since these devices also require the valve itself to be replaced, it is necessary to cut off the water supply when replacing the valve. .

[Problem that the invention attempts to solve]

This idea does not involve improving the human body sensing system or the flush valve itself in order to improve the cleaning effect and water saving effect, but rather allows the existing manual flushing device to be easily automated. The purpose is to provide a device that does not impair any of its functions.

[Means for solving problems]

The above object of the present invention can be achieved by adopting the following means. In other words, the gist is a device that is attached to an existing manual push button type flush valve. A push button push rod with one end loosely inserted into the hole is passed through the front face of the push button and extended to the other side, while a motor is arranged on the opposite side of the support plate with the push button at the center. A circular tube cam is attached to the output shaft of the motor, and the extending end of the push button pressing rod is loosely inserted into a through hole provided at the front end of a connecting rod whose rear end is pivotally attached to a part of the peripheral edge of the circular tube cam. The urinal is inserted into the urinal in a fitting manner, and a sensor for detecting human body is disposed at a required position near the urinal, and the motor is activated by a signal from the sensor, and the push button is pressed by a push button push rod. This is an automatic urinal flushing device featuring:

The human body detection sensor may be either a temperature change type or an infrared type, which are currently widely used.If the number of urinals is small, a sensor for each urinal and a pair with the sensor may be used. A control device is installed, but if there are a large number of urinals, the sensors attached to each urinal are concentrated into one central control device, and from this central control device the motors installed in each urinal are connected. If you use a type that sends an activation signal or uses a sensor that can cover a wide range and detect the human body in each urinal,
A combination of these sensors can be selected depending on the size of the toilet and the number of urinals.

[Examples and effects]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The automatic urinal flushing device according to the present invention will be described in detail below with reference to drawings showing embodiments thereof.

Fig. 1 is a perspective view of the device of the present invention attached to a conventional manual urinal, and Fig. 2 is an enlarged perspective view of the same essential parts. However, its both ends are connected to the through hole 2 of the support plate 2.
a and the through hole 3a of the push button 3, respectively, in a loosely inserted state, and the middle part of the push button push rod 1 crosses the front surface of the push button 4, and the push button 4 is not pressed at all. The push button push rod 3 is placed in such a position that it lightly touches the front surface of the push button 4. The connecting rod 3 has a rear end side, that is, a through hole 3a.
The opposite end thereof is pivotally attached to a part of the peripheral edge of the circular tube cam 5, and the circular tube cam 5 is disposed on the same axis as the output shaft of the motor 6. In the figure, 7 is the sensor, 8 is the flash valve, 9 is the connecting rod slide guide, 10
indicates the mounting board.

In the automatic flushing device of the present invention having such a configuration, when a person stands in front of the urinal, the sensor 7 detects this and rotates the motor 6 via a control circuit (not shown) to flush the urinal. When the circular tube cam 5 attached to the output shaft of the motor 6 is rotated, the push button press rod 1 changes from the state shown in FIG. 3 to the state shown in FIG.
moves, and the push button 4 is pressed by the push button push rod 1.
, which acts on the flush valve 8 in the same way as pressing the push button 4 manually, causing water to flow.
In this case, the operating speed of the pushbutton push rod 1, that is, the rotational speed of the motor 6, can be set as appropriate;
While the circular tube cam 5 rotates once, the push button pressing rod 1 slowly presses and releases the push button 4,
It was confirmed that if one rotation is completed in 3 to 5 seconds, the result will be roughly the same as when pushing by hand.

[Effect of idea]

As mentioned above, according to the automatic urinal flushing device of the present invention, despite its simple structure, automatic flushing can be performed reliably, and the installation of the present device is easy.
There is no need to make any changes to existing flash valves, and there is no need to do any plumbing work, so there is no need to maintain a water cutoff, and it can be easily installed by each individual. effective.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the device of the present invention attached to an existing manual urinal, Figure 2 is an enlarged perspective view of the same essential parts, and Figures 3 and 4 each show the operating state of the device of the present invention. Explanatory diagram. In the figure, 1...Push button press rod, 2...Support plate,
3...Connecting rod, 4...Push button, 5...Cylindrical cam, 6...Motor.

Claims (1)

[Scope of utility model registration request] This is a device that is attached to an existing manual push button type flush valve, and the support plate is installed close to each other on the left and right sides of the push button of the flush valve, and has a through hole in the support plate, and the device is loosely fitted into the through hole. A push button push rod with one end inserted in a shape is passed through the front face of the push button and extended to the other side, and a motor is arranged on the opposite side of the support plate with the push button as the center, and the output shaft of the motor is A circular tube cam is attached to the circular tube cam, and the extending end of the push button pressing rod is loosely inserted into a through hole provided at the front end of the connecting rod, the rear end of which is pivotally attached to a part of the peripheral edge of the circular tube cam. The urinal is characterized by a structure in which a sensor for detecting a human body is disposed at a predetermined location near the urinal, the motor is activated by a signal from the sensor, and the push button is pressed by a push button push rod. Automatic flushing device for urinals.