JP2001258796A - Automatic closing mechanism of lavatory bowl, lavatory cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a sensing with one sensor in an automatic closing mechanism of a lavatory bowl.lavatory cover in a toilet. SOLUTION: A microwave sensor is used as a means for detecting a human body in the automatic closing mechanism of the lavatory bowl.lavatory cover in the toilet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic opening and closing device for a toilet seat and a toilet lid.

[0002]

2. Description of the Related Art Conventionally, automatic opening / closing of a toilet seat and a toilet lid is operated by operating a switch such as an attached remote controller.
In addition, a system that uses a human body detection sensor to detect that a user has entered a toilet and automatically opens and closes a toilet lid has become widespread. In addition, a photoelectric infrared sensor or a pyroelectric infrared sensor is often used as a human body detection sensor for opening and closing the toilet seat and toilet lid.

[0003]

However, in the case of a photoelectric infrared sensor, since the measurement accuracy of the sensor depends on the reflectance of the object to be detected, erroneous detection may be made due to the color of the clothes of the user, or a person may be erroneously detected by the toilet wall. There is a problem that it is difficult to distinguish between them. A window for transmitting and receiving light is indispensable, and the design is considerably restricted. In addition, since the pyroelectric infrared sensor is greatly affected by the ambient temperature, it is difficult to detect a human body if the air temperature and the body temperature are almost the same. Ultrasonic sensors and ranging sensors are also present, although rarely used. However, ultrasonic sensors are susceptible to noise and wind, and are not easily implemented due to mutual interference. Furthermore, the distance measurement sensor has a limit on the measurement distance, and if you aim at the near point, almost no signal will be output when measuring the distance of a distant part, and in the opposite case, if you aim at a far point, the signal will be at the near point. Overscale.

[0004]

Means for Solving the Problems and Action / Effects The invention according to claim 1 made in order to solve the above problems,
A multifunctional toilet seat and a device in which the function thereof is integrated with a toilet, wherein a toilet seat and / or a toilet lid of the multifunctional toilet seat automatically opens and closes by detecting the presence or absence of a human body near the device by a human body detecting means. In the automatic lid opening and closing device, the human body detecting means is constituted by a microwave sensor.
According to the present invention, since a microwave sensor is used as a sensor for detecting a human body, a window required for light emission and reception of the sensor is not required.

According to a second aspect of the present invention, there is provided a manual opening / closing switch for automatically opening / closing a toilet seat and / or a toilet lid of the multifunctional toilet seat, and when the switch is used, the toilet seat and / or the toilet seat is provided. The automatic opening / closing function of the lid is released. According to the present invention, not only the automatic opening and closing of the toilet seat and the toilet lid, but also the opening and closing of the toilet seat and / or the toilet lid can be preferentially performed by pressing the manual open / close switch in the human body detection by the microwave sensor. When cleaning the toilet, both the toilet seat and the toilet lid can be opened, and when cleaning the back side of the toilet lid, only the toilet lid can be easily opened.

According to a third aspect of the present invention, the microwave sensor includes means for transmitting a radio wave for detecting a human body,
Means for receiving the reflected wave of the radio wave transmitted by the transmitting means, obtaining a difference between the frequency of the signal received by the receiving means and the frequency of the signal transmitted by the transmitting means, and forming a signal corresponding to the difference It is characterized by being constituted by means for generating. ADVANTAGE OF THE INVENTION According to this invention, since it is the structure which fully utilized the characteristic of the microwave, the state of a human body can be grasped | acquired accurately and the opening / closing of a toilet seat / closure lid according to a user's action pattern becomes possible.

The invention according to claim 4 is characterized in that the frequency of the transmitting means is 2.45 GHz to 12 GHz. According to the present invention, the frequency of the transmitting device is set to 2.45.
By setting the frequency to GHz or higher, it becomes possible to extract a Doppler signal for detecting a motion of a human body. In other words, it is not possible to extract the Doppler signal well below 2.45 GHz. In addition, the frequency of the transmitting device is 12 GHz
The higher the degree, the smaller the antenna can be, so that downsizing can be realized. By the way, when the length of the antenna is 1/4 of the wavelength of the received radio wave, and when the radio wave has a frequency of 12 GHz, an antenna of about 6 mm is sufficient. Wavelength λ (m) = speed of light (m / s) / frequency (Hz) The upper limit of the frequency of the transmitting device is defined for the following reason. The atmosphere (mainly on the earth's surface) contains air and water vapor, and may also rain. What characteristics these have with respect to the propagation of electromagnetic waves is most important in a wireless system that directly uses a space given by nature as a propagation path. Although the characteristics vary depending on the frequency of the electromagnetic wave, the attenuation generally increases in proportion to the frequency. Less attenuation as a propagation path is at 0.1
The range is from 10 MHz to 10 GHz, which is referred to as a “radio wave window” in the field of high frequency. In other words, 10GH
At frequencies above z, it is unsuitable for moving object detection means for various reasons.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

[Embodiment 1] FIG. 1 is a view in which an automatic opening / closing mechanism for a toilet seat and a toilet lid is provided in a device in a toilet. FIG. 2 is a block diagram of the automatic opening / closing device. FIG. 3 is a diagram illustrating radio wave propagation characteristics in the atmospheric space. In FIG. 3, the x-axis is frequency and the y-axis is attenuation. The larger the attenuation, the less suitable for the radio wave sensor. First, the configuration will be described. A toilet 2 is set in a toilet 1, and a heating toilet seat 3 with a washing function is installed. A microwave sensor 8 is set in the heating toilet seat 3 with a washing function. Further, it has an automatic opening / closing mechanism section 6 for the toilet seat 4 and the toilet lid 5 and a circuit section 7, and a remote controller 9 is also attached. Next, the operation will be described. The microwave sensor 8 in the heating toilet seat 3 with a washing function is provided from a radio wave transmitting unit (not shown) to detect whether a human body has entered the toilet 1.
Radio waves of 5 GHz to 10 GHz are transmitted. When there is a human body, the radio wave transmitted from the radio wave transmitting unit in the microwave sensor 8 is reflected by the human body and received by a radio wave receiving unit (not shown) in the microwave sensor 8. By performing a specific process on the radio waves, it is possible to grasp the state of the motion of the human body. A signal ascertaining the operation of the human body instructs the mechanism unit 6 from the circuit unit 7 to automatically open and close the toilet seat 4 and the toilet lid 5.
The configuration of the mechanism section 6 is omitted here. The circuit unit 7 includes a CP
It is composed of operation and instruction parts including U (not shown). By using a microwave sensor for human body detection, the degree of freedom in designing a sensor mounting structure is improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a first embodiment, and is a configuration diagram of an automatic opening / closing device.

FIG. 2 is a diagram showing a first embodiment, and is a block diagram of an automatic opening / closing device.

FIG. 3 is a diagram illustrating the first embodiment, and is a diagram illustrating a radio wave propagation characteristic in the atmospheric space.

[Explanation of symbols]

1 ... toilet, 2 ... toilet bowl, 3 ... heating toilet seat with washing function, 4 ...
Toilet seat, 5 ... toilet lid, 6 ... mechanical part, 7 ... circuit part, 8 ... microwave sensor, 9 ... remote control

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takenori Fukushima 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 2D037 AB05 AD01 AD16

Claims (4)

[Claims] A multifunctional toilet seat and a device in which the function of the multifunction toilet seat is integrated with a toilet, wherein the multifunctional toilet seat automatically detects the presence or absence of a human body near the device by detecting the presence or absence of a human body near the device. An automatic opening / closing device for a toilet seat and a toilet lid, wherein the human body detecting means is constituted by a microwave sensor. 2. A manual opening / closing switch for opening / closing a toilet seat and / or a toilet lid of the multifunctional toilet seat, wherein when the switch is used, the automatic opening / closing function of the toilet seat and / or the toilet lid is released. The automatic opening / closing device for a toilet seat and a toilet lid according to claim 1, wherein: 3. The microwave sensor includes means for transmitting a radio wave for detecting a human body, means for receiving a reflected wave of the radio wave transmitted by the transmitting means, and a frequency of a signal received by the receiving means. 2. The method according to claim 1, further comprising a step of obtaining a difference from a frequency of the signal transmitted by the transmitting unit and generating a signal corresponding to the difference.
Item 3. The automatic opening / closing device for a toilet seat and a toilet lid according to Item 2. 4. The transmission means has a frequency of 2.45 GHz.
The multi-function toilet according to any one of claims 1 to 3, wherein the frequency is z to 12 GHz.