JPS6095038A - Automatic water plug - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic water faucet that automatically controls the start and stop of water supply based on the detection of a human body by a sensing section.

Various structures are known for this automatic faucet, and representative ones include the one disclosed in Japanese Patent Publication No. 87-987 and the one disclosed in Japanese Utility Model Publication No. 48-16196.

All of the above publications include a water supply section and an electric control section that operates based on a sensing section to open and close the water supply section, and the former automatically senses the user;
The latter is an automatic sensing type automatic faucet where the quantity control part that generates the sensing signal continues to generate an output to supply water, and when the sensing signal disappears, the output of the control part stops and the water supply is stopped. The user consciously senses it, and when the first sensing signal occurs, the control unit starts generating an output, and stops generating the output when the next sensing signal occurs, that is, starts water supply at the first sensing. This is an automatic faucet that senses your intention and stops the water supply on the second detection.

The above-mentioned automatic sensing type automatic faucet is suitable for hand washing, etc., but it is not suitable for continuous water discharging such as to collect water in a basin. Although it is suitable for discharging water from water, it is not suitable for washing hands, etc. Therefore, when installing an automatic faucet, choose one of the two methods above depending on the purpose of use. must be installed.

The technical problem to be solved by the present invention is that the user can select one automatic faucet to automatically supply water during detection and stop water supply when the detection disappears, or to automatically supply water at the first detection. The water supply is started and then stopped at the second detection.

The technical means taken by the present invention to achieve the above technical problem is an automatic faucet including a water supply section and an electric control section for opening and closing the water supply section, the electric control section comprising:
A first sensing section that automatically senses a user; and a first control that operates based on the first sensing section to open the water supply section while the first sensing section is sensing and close the water supply section when the detection disappears. and a second sensing portion that is consciously sensed by the user.
a second control unit that operates based on the sensing unit to open the water supply unit at the first detection of the second sensing unit and close the water supply unit at the next detection; and a second control unit that operates based on the first sensing unit or the second sensing unit; When the detected sensing part is the first control part, the water supply part is operated by selecting the first control part, and when the sensing part is the second sensing part, the second control part is selected to operate the water supply part. - Therefore, if the user's sensing is performed by the first sensing part first, water is supplied while the sensing continues, and water supply is stopped when the sensing disappears. In addition, if the user consciously places his/her hand over the second sensing part and causes the second sensing part to sense first, water supply will start at the first sensing, and then the user can place his or her hand over the second sensing part again. Water supply continues until the next detection occurs, and water supply stops at the next detection.

Since the present invention has the above configuration, it has the following advantages.

(1) One NWJ faucet can be used as a self-sensing type or a will-sensing type, depending on the purpose of use and site conditions. It can be installed without being damaged, and can be installed in any location.

(2) The automatic sensing type or the volitional sensing type can be used freely and selectively according to the purpose, so the optimal water discharge condition can be obtained according to the purpose, and of course it is easy to use.
You can also save water.

Hereinafter, an example of implementation of the present invention will be described based on the drawings.

In this embodiment, an automatic water faucet is installed in a washbasin, and (A) in the figure is a washbasin that is attached to the wall of a building. A water discharging device (5) connected to 1) is provided.

The spouting device (5) has an upper edge surface (6
), and the discharge port (5b) at the upper end faces the bowl part of the wash basin (A) from above, and the water spout (5) is connected to the outflow side of the water supply part (1). The secondary water supply connection pipe (7) is inserted and connected from the back side of the wash basin (A).

The water supply unit (1) operates when the drive unit (8) is energized.
8) is driven to open the valve part (9), and when the current is turned off, the valve part (9) is closed.
8) is controlled by the electric control section (2).

This water supply part (1) is sometimes housed in a case together with the circuit wiring part of the electric control part (2), and is placed in the space below the wash basin (A), supplying hot water at a desired temperature to the water spouting device (5). The primary flll is equipped with a stop valve ◇ on the inflow side so that
l Connect to the outlet of the thermostatic mixing pulp (to the pulp) via the water supply connection pipe (2).

Needless to say, the thermostatic mixing valve (b) is connected to a water supply source and a hot water supply source.

The electric control section (2) includes a first sensing section (3) and a second sensing section (
4) Select the two sensing units, the first control unit that operates based on the first sensing unit (3), the second control unit that operates based on the second sensing unit (4), and the control unit. As shown in the block diagram in Figure 8, the first
One circuit serves as the control section and the second control section, and the selection circuit section consists of a mode switching circuit α→ and an output control circuit (to). The second control unit is configured to automatically switch to one of the circuits.

In the case of this embodiment, the first sensing section (3) and the second sensing section (4) both include a light emitter (B) and a light receiver (H), and the infrared rays projected from the light emitter) can be used to detect damage to the human body, e.g. This is a so-called diffuse reflection type infrared photoelectric sensor that emits a sensing signal when the light is diffusely reflected by a finger on the hand and the reflected light is received by a receiver. The second sensing part (4) is embedded in the front surface of the body (5a) of the water spouting device (5) so that it can be sensed by the user. Attach the washbasin to the wall of a nearby building so that it can be used.

The first control unit generates a sensing signal of the first IrB sensing unit (3) and generates an activation signal when this generation state continues for a screening time T1, and the sensing signal disappears, and this disappearing state continues for a delay time - T1. A malfunction prevention circuit (b) in which the generation of the start signal disappears when the start signal is generated, and a timer circuit that generates a time-up signal only when the start signal is continuously generated for a prohibition time T3, and resets when the start signal disappears (2). (C) and an output generation prevention circuit that generates an output generation prevention signal based on the time-up signal) and an output that drives the drive unit (8) of the water supply unit (3) when only the start signal is generated. The output circuit is provided with an output circuit that stops generation of the output when the activation signal is generated and disappears, or when an output generation prevention signal is generated together with the activation signal, and the first sensing portion (3) is first detected. Starting sensing and waiting for a predetermined screening time TI (e.g. several minutes to 0,5
sec), the driving part (8) is continuously energized while the first sensing part (3) is sensing the human body, and after the sensing is finished, a predetermined delay time T2 (for example, 0.5 2) After that, the drive unit (8) is configured to stop energizing the drive unit (8), and the time during which the drive unit (8) is energized, that is, the water spouting time, is set to be slightly longer than the time required for normal hand washing or bathroom sink. A prohibition time Tl (for example, 2- to 4jth) is provided for abnormal continuous water spouting, and water spouting is stopped when the continuous water spouting time reaches the prohibition time Ts even if sensing is in progress.

The purpose of providing the sorting time T□ is to prevent your hands from getting wet if, for example, you hold out your hand but suddenly stop washing your hands.

In addition, the reason why the delay time T is provided is that, for example, while washing hands, the hand may momentarily move out of the sensing area and the sensing disappears. This is to prevent failure of the drive unit (8) and occurrence of water hammer due to frequent starting and stopping of the hand wash basin (A), and to clean dirt adhering to the wash basin (A) after hand washing.

Furthermore, the prohibition time T is provided to prevent water from flowing out due to some reason, for example, soap liquid adhering to the first sensing part (3) and being left in the sensed state. It's for a reason.

On the other hand, the second control section includes a malfunction prevention circuit (b) that operates in the same way as the first control section and generates a start signal, and a malfunction prevention circuit (b) that generates an output generation signal at the rising edge of the first start signal, and generates an output generation signal at the rising edge of the first start signal. A bistable multivibrator circuit ■ that is reset at the rising edge and stops generating an output signal, and a bistable multivibrator circuit that starts generating the output signal and generates a time-up signal after the prohibition time T3,
Timer circuit that resets when the output signal disappears (c)
and a bistable multivibrator reset circuit that resets the bistable multivibrator circuit based on the time-up signal +c) and an output that drives the drive unit (8) while generating the output signal of the bistable multivibrator circuit). A second r0. Details (4)
When detected first, the water supply section (1) is energized at the first detection to open the valve, and at the next detection, the water supply section (1) is de-energized and the valve is closed. It is composed of

This second control section is also provided with a sorting time T1, a delay time T2, and a prohibition time T3, similar to the first control section described above.

The delay time T2 is such that when a hand is held in front of the second sensing part (4), a sensing signal is repeatedly generated and disappeared due to the existence of a space between the fingers, and water is supplied. This helps prevent repeated starts and stops.

In addition, the sorting time T1 is such that water is flushed immediately when you first place your hand over it, but water is flushed after 13 hours, so it is not necessary to save water. The water supply will be stopped after 18 hours without stopping the water supply.
This is useful for removing dirt from the hand wash basin (A) due to hand washing.

Of course, even if you forget to stop the water supply after the water supply starts, the water supply will be automatically stopped after the prohibition time T3.

Figure 4 shows a time chart when the first sensing section (3) senses first and the first III control section is selected. FIG. 5 shows time charts when two control units are selected.

In the embodiments described above, the sensing section is a photoelectric sensor, but it is also possible to use an electrostatic or ultrasonic sensor. Of course, it is not necessary to provide T1 time, 12 hours, and 13 hours.

Further, in the above embodiment, the water supply section was connected to the thermostatic mixing pulp so that hot water at a preset temperature could be spouted, but the water supply section was connected to the water supply source through the primary water supply connection pipe, Of course, it is optional to discharge water from the water discharging tool.

Furthermore, it goes without saying that this automatic faucet can be installed and used not only in hand wash basins but also in any water washing basin.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of an automatic faucet showing an embodiment of the present invention, Fig. 2 is a front view showing the automatic faucet of the present invention installed in a washbasin, and Fig. 8 is an electric control section. Block diagram of 4th
The figure is a time chart when the first control section is selected by the first sensing by the first sensing section, and FIG. 5 is the time chart when the first control section is selected by the first sensing by the second sensing section. (1)--Water supply section (2)--Electrical control section (3)--
・First sensing part (4)-・Second sensing part Patent applicant: TOTOKIKI CO., LTD.

Claims (1)

[Claims] In an automatic water faucet that includes a water supply section and an electric control section that opens and closes the water supply section, the electric control section includes a first sensing section that automatically detects a user; a first control section that operates based on the first sensing section to open the water supply section while the first sensing section is sensing and closes the water supply section when the sensing disappears; a second sensing section that the user consciously causes to sense; a second control unit that operates based on the sensing unit to open the water supply unit at the first detection of the second sensing unit and close the water supply unit at the next detection;
When the first sensing section senses the sensing section or the second sensing section, the first control section is selected, and when it is the second sensing section, the second control section is selected to operate the water supply section. An automatic water faucet characterized by comprising a selection circuit section that allows