JP2005273284A - Sanitary washing device - Google Patents

Sanitary washing device Download PDF

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JP2005273284A
JP2005273284A JP2004088131A JP2004088131A JP2005273284A JP 2005273284 A JP2005273284 A JP 2005273284A JP 2004088131 A JP2004088131 A JP 2004088131A JP 2004088131 A JP2004088131 A JP 2004088131A JP 2005273284 A JP2005273284 A JP 2005273284A
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case
toilet seat
human body
sanitary washing
nozzle
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Osamu Akiyoshi
修 秋吉
Yoshiyuki Kaneko
義行 金子
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Toto Ltd
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Toto Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary washing device of excellent design equipped with a human body detector for stably detecting seating of a human body without being influenced by the color of a user's clothes. <P>SOLUTION: This sanitary washing device is provided with a toilet seat 2; a body case comprising a case plate 14 and a case cover 15 and supporting the toilet seat in an openable/closable manner; and a nozzle 5 advancing/retreating through an opening 16 of the body case 1. An infrared projecting/receiving type seating sensor 9 for detecting the buttocks of the human body seated on the toilet seat 2 is mounted close to the opening 16 of the case plate 14. The seating sensor 9 is provided with a unit case 920 for integrating a projecting element 93 and a photodetector 97 of infrared rays. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、便座への着座検出装置を備えた衛生洗浄装置に関する発明である。   The present invention relates to a sanitary washing device provided with a seating detection device for a toilet seat.

衛生洗浄装置では、人体が着座していないときに洗浄スイッチを操作しても温水が噴出して周囲を濡らしたりすることがないように、着座した人体を感知する着座センサを設け、この着座センサが人体を感知した時のみ、温水噴出、または乾燥などの操作を可能としたものが一般的である。   The sanitary washing device is provided with a seating sensor that senses the seated human body so that warm water does not spout and wet the surroundings even if the cleaning switch is operated when the human body is not seated. It is common to allow operations such as hot water ejection or drying only when a human body is sensed.

着座センサの方式には、便座への人体の加重や人体の静電容量の変化で検出するものもあるが、赤外線式の赤外線式測距センサが最も多い。赤外線式測距センサは三角測量の原理を用いたもので、人体に向けて赤外線ビームを投射し、検出体からの反射した赤外線ビームの入射角度で距離を算出する。(例えば、特許文献1参照)   Some seating sensor methods detect the weight of the human body on the toilet seat or change in the electrostatic capacity of the human body, but infrared type infrared distance measuring sensors are the most common. The infrared distance measuring sensor uses the principle of triangulation, projects an infrared beam toward the human body, and calculates the distance by the incident angle of the reflected infrared beam from the detection body. (For example, see Patent Document 1)

赤外線式測距センサが検出対象とする人体の部位は、腰や背中などが一般的である。これは、使用者の体型や座り方などの条件が変わっても赤外線式測距センサの赤外線ビームが外れにくいためである。   The human body part to be detected by the infrared distance measuring sensor is generally the waist and back. This is because the infrared beam of the infrared distance measuring sensor is difficult to come off even if conditions such as the user's body shape and how to sit change.

図9は腰を狙う赤外線式測距センサを搭載した衛生洗浄装置の外観例である。図9において、1は本体ケース、2は便座シート、3は便蓋、5は洗浄ノズルであり、19が着座センサの窓である。赤外線式の赤外線式測距センサには、赤外線を透過する部材で保護用の窓19が形成されており、斜め上方向(矢印の方向)に赤外線ビームを投射する。   FIG. 9 is an example of the appearance of a sanitary washing apparatus equipped with an infrared distance measuring sensor aiming at the waist. In FIG. 9, 1 is a main body case, 2 is a toilet seat sheet, 3 is a toilet lid, 5 is a washing nozzle, and 19 is a seating sensor window. The infrared type infrared distance measuring sensor is formed with a protective window 19 made of a member that transmits infrared rays, and projects an infrared beam obliquely upward (in the direction of the arrow).

ところが、赤外線式測距センサには以下のような問題がある。
赤外線式測距センサは、検出体で反射した赤外線ビームの入射角度で距離を算出するので、原理的には検出体の反射率に影響されない。しかし実際には、検出体の反射率が非常に小さい場合、すなわち真っ黒な衣服などでは、反射ビームの強度が著しく低下し、角度検出を行うために必要な信号レベルが得られず、うまく距離を検出できない場合がある。
腰や背中を検出部位とするためには、図9のように本体ケースの目立つ位置に赤外線式測距センサを設置しなければならず、赤外線式測距センサの窓部分が本体ケースと調和せず、意匠性を低下させる。
However, the infrared distance measuring sensor has the following problems.
Since the infrared distance measuring sensor calculates the distance by the incident angle of the infrared beam reflected by the detection body, it is not influenced by the reflectance of the detection body in principle. However, in reality, when the reflectance of the detection object is very small, that is, in black clothes, the intensity of the reflected beam is significantly reduced, and the signal level necessary for angle detection cannot be obtained, so the distance can be reduced well. It may not be detected.
In order to use the waist and back as the detection site, an infrared range sensor must be installed at a prominent position on the main unit case as shown in FIG. 9, and the window portion of the infrared range sensor is in harmony with the main unit case. Without deteriorating the design.

また、図9の赤外線式測距センサの位置では、衣服の反射率の影響や意匠性の問題があるため、赤外線式測距センサを便座の後部に取り付け、便座から下に落ちた臀部で検出する発明もある。(例えば、特許文献2参照)   In addition, at the position of the infrared distance measuring sensor in FIG. 9, there is an influence of the reflectance of the clothes and a problem of design, so the infrared distance measuring sensor is attached to the rear part of the toilet seat and is detected at the buttocks that have dropped down from the toilet seat. Some inventions. (For example, see Patent Document 2)

特許文献2のように臀部を検出部位とすれば、衣服の色の固体差に比べて臀部の色の個人差は小さいため、検出体の反射率の問題は解消する。しかし、この発明では赤外線式測距センサの赤外線ビームを便座の後周縁近傍から前周縁の便器内壁面の上端に向け、ほぼ水平に投射しており、使用者の便座への座り方次第では、便座下に臀部が突出するとは限らず、安定した検出は期待できない   If the buttock is used as a detection part as in Patent Document 2, the individual difference in the color of the buttock is smaller than the individual difference in the color of the clothes, so that the problem of the reflectance of the detection body is solved. However, in the present invention, the infrared beam of the infrared distance measuring sensor is projected almost horizontally from the vicinity of the rear periphery of the toilet seat to the upper end of the toilet inner wall on the front periphery, and depending on how the user sits on the toilet seat, The buttock does not always protrude under the toilet seat, and stable detection cannot be expected.

また赤外線式測距センサ表面に小便の水滴が付くと、水滴がレンズとして機能する。赤外線式測距センサは、所定の方向に向けて赤外線ビームを投光し、その反射ビームの入射角度で距離を検出するが、入射角度の変化は非常に僅かなものである。
このため、小便によって出来たレンズによって多少でも赤外ビームの角度が変われば、赤外線式測距センサの検出結果に大きな誤差が発生する。
Also, when urine water droplets are attached to the surface of the infrared distance measuring sensor, the water droplets function as a lens. The infrared distance measuring sensor projects an infrared beam in a predetermined direction and detects the distance by the incident angle of the reflected beam, but the change in the incident angle is very slight.
For this reason, if the angle of the infrared beam is slightly changed by the lens made by urination, a large error occurs in the detection result of the infrared distance measuring sensor.

また、頻繁に小便がかかれば、赤外線式測距センサ表面に汚れがひどく付くことになる。反射の光量だけを検出する場合は、汚れの程度に比例して信号が減衰するだけで済む。
しかし、赤外線式測距センサは反射ビームの入射角度で距離を検出するため、センサ表面の汚れの状態、特に一部分に汚れがある場合、その影響は、赤外線式測距センサの検出結果を、近い側にも遠い側にも変化させてしまう。よって、特許文献2のように、小便がかかる位置に赤外線式測距センサを置くと、検知距離が変わり、誤感知が発生する可能性が非常に高い。
Moreover, if urine is frequently taken, the surface of the infrared distance measuring sensor will be heavily soiled. When only the amount of reflected light is detected, the signal only needs to be attenuated in proportion to the degree of contamination.
However, since the infrared distance measuring sensor detects the distance at the incident angle of the reflected beam, the influence of the infrared distance measuring sensor is close to the detection result of the infrared distance measuring sensor when the sensor surface is dirty, especially when there is some dirt. It will change to the side and the far side. Therefore, as in Patent Document 2, when the infrared distance measuring sensor is placed at a position where urine is applied, the detection distance is changed and the possibility of erroneous detection is very high.

また、赤外線式測距センサではなく、赤外線の反射レベルを検出するセンサを便座(便座シート)に取り付けた発明もある(例えば、特許文献3参照。)。
但しこの発明は、開閉式の便座の裏面に着座センサを取り付けることで、立位(立ち小便)と着座を1つのセンサで検出することが主目的である。
特許文献3は、同じく臀部を検出部位とするものであるが、赤外線式測距センサは使用せず、便座部分に反射量を検出する赤外線センサを設けている。
しかし、便座には、着座した際の肌触りや冷たさの改善のため、布製(多くはタオル地)の便座カバーを取りけることが多い。特に、冬場に便座のヒーターを作動させる場合は、便座カバーの装着による節電効果は大きい。
便座カバーは赤外線を透過しないため、便座カバーを取り付けた時点で便座のセンサは全く機能しなくなる。仮に、便座カバーの使用禁止を明示しても、すでに一般的に設置されている場合が少なくないのでトラブル発生が予想される。
また特許文献3では、赤外線の反射信号として、臀部だけでなく便器内の反射も利用している。しかし、便器の形状、色、水位、汚物の有無など、信号が安定しない要素が多い。更に、臀部の反射の個人差も加えれば、実際の着座、用便、便器洗浄という使用過程を通して、これらの要素の反射量変化を判別するのは極めて困難であり、正確な着座検出は期待できない。
特開平4−256807号公報 特開2000−107081号公報 特許第2970500号公報
Further, there is an invention in which a sensor for detecting an infrared reflection level is attached to a toilet seat (toilet seat sheet) instead of an infrared distance measuring sensor (see, for example, Patent Document 3).
However, the main object of the present invention is to detect a standing position (standing urine) and seating with one sensor by attaching a seating sensor to the back surface of the openable toilet seat.
Patent Document 3 similarly uses the buttocks as a detection site, but does not use an infrared distance measuring sensor, but provides an infrared sensor for detecting the amount of reflection at the toilet seat portion.
However, a toilet seat cover made of cloth (mostly towels) can often be removed from the toilet seat to improve the feel and coldness when seated. In particular, when the toilet seat heater is operated in winter, the power-saving effect of wearing the toilet seat cover is great.
Since the toilet seat cover does not transmit infrared rays, the toilet seat sensor does not function at all when the toilet seat cover is attached. Even if the prohibition of use of the toilet seat cover is clearly indicated, troubles are expected because there are many cases where the toilet seat cover is already installed.
Moreover, in patent document 3, not only a buttocks but also the reflection in a toilet bowl is utilized as an infrared reflected signal. However, there are many elements where the signal is not stable, such as the shape, color, water level, and the presence or absence of filth. Furthermore, if individual differences in reflection of the buttocks are added, it is extremely difficult to discern changes in the amount of reflection of these elements through the use process of actual seating, stool and toilet flushing, and accurate seating detection cannot be expected. .
JP-A-4-256807 JP 2000-107081 A Japanese Patent No. 2970500

本発明は、上記問題点を解決するためになされたもので、使用者の服の色に影響されることなく、安定して人体の着座を検出するセンサを備え、意匠性にも優れた衛生洗浄装置を提供することを目的とする。   The present invention has been made to solve the above-described problems, and includes a sensor that stably detects the seating of the human body without being affected by the color of the clothes of the user, and has excellent design. An object is to provide a cleaning device.

上記目的を達成するために、請求項1は、便座と、前記便座を開閉自在に支持する本体ケースと、前記本体ケースの開口部を通して本体ケースの内外間を進退して人体局部に洗浄を吐出するノズルを具備する衛生洗浄装置において、前記便座に着座した人体臀部を検出する人体検出装置を前記開口部に設けたことを特徴とするので、便座への座り方や着衣の色合いによる人体検出の誤作動の少ない、安定した人体検出性能を得ることができる。また、人体検出装置が便座より下方に設けられるので、センサ窓を無くして衛生洗浄装置の意匠性を向上させることができる。   In order to achieve the above object, the present invention provides a toilet seat, a body case that supports the toilet seat so that the toilet seat can be opened and closed, and an inside and outside of the body case through the opening of the body case to discharge cleaning to a human body part. In the sanitary washing apparatus comprising the nozzle, the human body detection device for detecting the human body part seated on the toilet seat is provided in the opening, so that the human body detection by the way of sitting on the toilet seat or the color of the clothes Stable human body detection performance with few malfunctions can be obtained. Further, since the human body detection device is provided below the toilet seat, the sensor window can be eliminated and the design of the sanitary washing device can be improved.

請求項2は、前記人体検出装置を、前記本体ケースに取付け固定したので、ノズルから洗浄水が噴出することでノズルが振動する局部洗浄状態であっても、人体検出装置はノズルの振動による影響を受けにくく、安定した人体検出が可能となる。   Since the human body detection device is attached and fixed to the main body case, the human body detection device is affected by the vibration of the nozzle even in a local cleaning state in which the nozzle vibrates when the cleaning water is ejected from the nozzle. Stable human body detection is possible.

また、請求項3は、前記人体検出装置は、赤外線の投光素子及び受光素子を一体化するユニットケースを備えたので、投光素子と受光素子の相対位置が一定となるので、両者間距離の誤差を少なくすることができ、検知性能の安定化が図れる。   According to a third aspect of the present invention, since the human body detection device includes a unit case in which the infrared light projecting element and the light receiving element are integrated, the relative position between the light projecting element and the light receiving element is constant. Error can be reduced, and the detection performance can be stabilized.

請求項4では、前記ユニットケースが、前記ノズルの進退時の通過路となるノズル挿通部を有し、前記ノズル挿通部を挟んだ両側に前記投光素子及び受光素子をそれぞれ配置したので、投光素子と受光素子の距離が十分に離れて水滴付着の影響を受けにくくなり、且つ人体検出装置も小型化できる。   According to a fourth aspect of the present invention, the unit case has a nozzle insertion portion that becomes a passage when the nozzle advances and retreats, and the light projecting element and the light receiving element are respectively disposed on both sides of the nozzle insertion portion. The distance between the optical element and the light receiving element is sufficiently large so that the optical element and the light receiving element are not easily affected by adhesion of water droplets, and the human body detection device can be downsized.

上記目的を達成するために、請求項5は、便座と、ケースプレート及びケースカバーからなり、前記便座を開閉自在に支持する本体ケースと、前記本体ケースの開口部を通して本体ケースの内外間を進退して人体局部に洗浄を吐出するノズルを具備する衛生洗浄装置において、前記便座に着座した人体臀部を検出する人体検出装置を前記ケースプレートの前記開口部近傍に取付けたことを特徴とするので、便座への座り方や着衣の色合いによる人体検出の誤作動の少ない、安定した人体検出性能を得ることができる。また、人体検出装置が便座より下方に設けられるので、センサ窓を無くして衛生洗浄装置の意匠性を向上させることができる。また、ノズルから洗浄水が噴出することでノズルが振動する局部洗浄状態であっても、人体検出装置はノズルの振動による影響を受けにくく、安定した人体検出が可能となる。   In order to achieve the above object, a fifth aspect of the present invention comprises a toilet seat, a case plate, and a case cover, and a body case that supports the toilet seat in an openable / closable manner, and an inside / outside of the body case through an opening of the body case. In the sanitary washing apparatus having a nozzle that discharges the washing to the local body part, a human body detection device that detects a human body butterfly seated on the toilet seat is attached in the vicinity of the opening of the case plate, It is possible to obtain a stable human body detection performance with few human body detection malfunctions depending on how to sit on the toilet seat and the color of clothes. Further, since the human body detection device is provided below the toilet seat, the sensor window can be eliminated and the design of the sanitary washing device can be improved. Further, even in a local cleaning state in which the nozzle vibrates due to the washing water being ejected from the nozzle, the human body detection device is not easily affected by the vibration of the nozzle and enables stable human body detection.

請求項6は、前記人体検出装置が、赤外線の投光素子及び受光素子を一体化するユニットケースを備えたので、投光素子と受光素子の相対位置が一定となるので、両者間距離の誤差を少なくすることができ、検知性能の安定化が図れる。   According to a sixth aspect of the present invention, since the human body detection device includes a unit case in which the infrared light projecting element and the light receiving element are integrated, the relative position between the light projecting element and the light receiving element is constant, and therefore an error in the distance between the two. The detection performance can be stabilized.

本発明によれば、便座への座り方や着衣の色合いによる人体検出の誤作動の少ない、安定した人体検出性能を有し、意匠性が向上した衛生洗浄装置を得ることができる。   According to the present invention, it is possible to obtain a sanitary washing device that has stable human body detection performance and improved design, with few human body detection malfunctions due to how to sit on the toilet seat and the color of clothes.

以下、図面に基づき本発明を説明する。図1は本発明に係る衛生洗浄装置の取り付け状態を示す側面図である。   The present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an attached state of a sanitary washing device according to the present invention.

図1に示すように、衛生洗浄装置は、洋式大便器20の後部に装着される本体ケース1と、使用者が座る便座2、便座2の開口を閉じるための便蓋3が基本的な構成要素である。便座2および便蓋3は、それぞれ回転可能に本体ケース1に軸支されている。   As shown in FIG. 1, the sanitary washing apparatus is basically composed of a main body case 1 attached to the rear part of a western-style toilet 20, a toilet seat 2 on which a user sits, and a toilet lid 3 for closing the opening of the toilet seat 2. Is an element. The toilet seat 2 and the toilet lid 3 are pivotally supported by the main body case 1 so as to be rotatable.

衛生洗浄装置の本体ケース1の前方中央には、伸縮式のノズル5があり、ノズルから洗浄水を噴射させることで使用者は局部を洗浄できる。
そして、本体ケース1から伸縮式のノズル5が出てくる開口部16に人体検出装置として着座センサ9が取り付けられている。
There is a telescopic nozzle 5 at the front center of the body case 1 of the sanitary washing device, and the user can wash the local area by spraying washing water from the nozzle.
And the seating sensor 9 is attached to the opening part 16 from which the expansion-contraction type nozzle 5 protrudes from the main body case 1 as a human body detection apparatus.

図2は図1の部分拡大図である。着座センサ9の検出領域は便座2の開口に向けられている。符号10は、便座2が図2のように着座可能な状態に閉じていることを検出する便座閉検出スイッチであり、例えば便座2側に磁石を埋め込み、本体ケース1側にホール素子を内蔵すれば良い。   FIG. 2 is a partially enlarged view of FIG. The detection area of the seating sensor 9 is directed to the opening of the toilet seat 2. Reference numeral 10 denotes a toilet seat closing detection switch for detecting that the toilet seat 2 is closed in a seatable state as shown in FIG. 2. For example, a magnet is embedded on the toilet seat 2 side and a hall element is incorporated on the body case 1 side. It ’s fine.

図3は衛生洗浄装置の機能部の配置を示す上面図である。(便蓋3は表示を省略している。)
本体ケース1には、制御部4、ノズル5、ノズル5を本体ケース1から出し入れするノズル駆動モーター6、局部の洗浄水の出/止を制御する止水弁7、洗浄水を適温(お湯)に制御するヒーターを有する熱交換器8、着座センサ9、便座2の開閉状態を検出する便座閉検出スイッチ10、便蓋3の開閉状態を検出する便蓋閉検出スイッチ11、操作用リモコン(図不示)の信号を受信するリモコン受信部12が内蔵されている。便蓋閉検出スイッチ11は、前述の便座閉検出スイッチ10と同様に、便蓋3側に磁石、本体ケース1側にホール素子の組み合わせとする。
FIG. 3 is a top view showing the arrangement of the functional units of the sanitary washing device. (The toilet lid 3 is not shown.)
The main body case 1 includes a control unit 4, a nozzle 5, a nozzle drive motor 6 for taking the nozzle 5 in and out of the main body case 1, a water stop valve 7 for controlling discharge / stop of the local wash water, and an appropriate temperature for the wash water (hot water). A heat exchanger 8 having a heater to be controlled, a seating sensor 9, a toilet seat closing detection switch 10 for detecting the opening / closing state of the toilet seat 2, a toilet lid closing detection switch 11 for detecting the opening / closing state of the toilet lid 3, and a remote controller for operation (FIG. A remote control receiver 12 for receiving a signal (not shown) is incorporated. The toilet lid closing detection switch 11 is a combination of a magnet on the toilet lid 3 side and a hall element on the main body case 1 side in the same manner as the toilet seat closing detection switch 10 described above.

図4に本体ケース1の機能ブロック図を示す。制御部4は、使用者のリモコン操作によって発せられてリモコン受信部12で受信した操作信号と、便座閉検出スイッチ10及び便蓋閉検出スイッチ11で検出された便座2及び便蓋3の開閉状態と、着座センサ9の出力とに基づいて、ノズル5の伸縮(本体ケース1からの出し入れ)、温水温度制御、洗浄水の噴射を行う。   FIG. 4 shows a functional block diagram of the main body case 1. The control unit 4 generates an operation signal generated by the user's remote control operation and received by the remote control reception unit 12, and the opening / closing states of the toilet seat 2 and the toilet lid 3 detected by the toilet seat close detection switch 10 and the toilet lid close detection switch 11. Based on the output of the seating sensor 9, the expansion and contraction of the nozzle 5 (in and out of the main body case 1), hot water temperature control, and washing water injection are performed.

リモコン受信部に局部を洗浄する操作信号が入っても、便蓋3が閉じている場合、便座2が開いている場合(立ち小便のために立てている場合)、着座センサ9が使用者の着座が検出しない場合には、制御部4は洗浄水の噴出を行わない。   Even if an operation signal for washing the local part is input to the remote control receiver, when the toilet lid 3 is closed, or when the toilet seat 2 is open (when standing for standing urine), the seating sensor 9 is When the seating is not detected, the control unit 4 does not eject the washing water.

図5は着座センサ9の回路図である。着座センサ9は、回路全体を制御するセンサマイコン90、投光部91、受光部92から成る。更に、投光部91は、赤外光を発光する発光ダイオード93、発光電流を制御するトランジスタ94、発光電流を検出する抵抗95、トランジスタ94を制御するオペアンプ96から成る。
なお、受光部92は、赤外光を受光して電流に変換するフォトダイオードである受光素子97、受光電流を電圧に変換する抵抗98およびオペアンプ99から成る。
FIG. 5 is a circuit diagram of the seating sensor 9. The seating sensor 9 includes a sensor microcomputer 90 that controls the entire circuit, a light projecting unit 91, and a light receiving unit 92. Further, the light projecting unit 91 includes a light emitting diode 93 that emits infrared light, a transistor 94 that controls the light emission current, a resistor 95 that detects the light emission current, and an operational amplifier 96 that controls the transistor 94.
The light receiving unit 92 includes a light receiving element 97 that is a photodiode that receives infrared light and converts it into a current, a resistor 98 that converts the received light current into a voltage, and an operational amplifier 99.

センサマイコン90は、投光部91を駆動して赤外光を放射し、これに同期して受光部92の出力をA/D変換する。受光部92の出力が所定の閾値を超えると着座と判断してその結果を制御部4に出力する。
なお、センサマイコン90が着座または非着座と判定する閾値は単一の値である必要はなく、変化量を検出する方法でも良い。或いは、センサマイコン90は受光部92の出力のA/D変換結果をそのまま制御部4に出力し、制御部4で着座を判定するようにしてもよい。
The sensor microcomputer 90 drives the light projecting unit 91 to emit infrared light, and A / D converts the output of the light receiving unit 92 in synchronization therewith. When the output of the light receiving unit 92 exceeds a predetermined threshold value, it is determined to be seated and the result is output to the control unit 4.
Note that the threshold value that the sensor microcomputer 90 determines to be seated or not seated does not have to be a single value, and may be a method of detecting the amount of change. Alternatively, the sensor microcomputer 90 may output the A / D conversion result of the output of the light receiving unit 92 to the control unit 4 as it is, and the control unit 4 may determine seating.

図6はノズル部分の詳細構造を示す図である。便座2の開口の最後部は、本体ケース1から伸縮式のノズル5が出て来る部分近くまで達している。
また、ノズル5の伸縮時にノズル5が左右に振れないようにノズル5の周囲を複数点で支えるノズルガイド13が設けられ、ノズルガイド13のすぐ横のケースプレート14に着座センサ9が取り付けられている。
着座センサ9を構成するユニットケース900の内部には図5に示した回路部品が入っているが、図6では投光素子93と受光素子97のみ示している。
便座2の開口の最後端から斜め上を狙うように投光素子93と受光素子97が配置されているため、着座センサ9は使用者の臀部を検出体とする反射光量式の赤外線センサとして機能する。すなわち、便座2に使用者が着座すると、着座センサ9のすぐ近くに臀部が位置することになり、臀部による反射量が増加し着座と判断することができる。
FIG. 6 shows the detailed structure of the nozzle portion. The last part of the opening of the toilet seat 2 reaches the vicinity of the part where the telescopic nozzle 5 comes out from the main body case 1.
Further, a nozzle guide 13 that supports the periphery of the nozzle 5 at a plurality of points is provided so that the nozzle 5 does not swing left and right when the nozzle 5 expands and contracts, and the seating sensor 9 is attached to the case plate 14 immediately next to the nozzle guide 13. Yes.
Although the circuit components shown in FIG. 5 are contained in the unit case 900 constituting the seating sensor 9, only the light projecting element 93 and the light receiving element 97 are shown in FIG.
Since the light projecting element 93 and the light receiving element 97 are arranged so as to aim diagonally upward from the rearmost end of the opening of the toilet seat 2, the seating sensor 9 functions as a reflected light type infrared sensor using the user's buttocks as a detection body. To do. That is, when the user sits on the toilet seat 2, the buttock is positioned in the immediate vicinity of the seating sensor 9, and the amount of reflection by the buttock increases so that it can be determined that the user is seated.

本体ケース1は、ケースプレート14とケースカバー15からなるが、本体ケース1の前部分のノズル5が出てくる部分にはケースプレート14とケースカバー15の間に開口部16を設けている。着座センサ9の赤外光はその開口部16を介して、検出体との間を往復する。
なお、便蓋3が閉じている場合、着座センサ9は便蓋3からの反射光量は増加するために着座状態と誤感知する恐れがあるが、便蓋3の閉状態を検出する便蓋閉検出スイッチ11により制御部4が非着座を判断するようにすれば誤感知とはならない。
The main body case 1 includes a case plate 14 and a case cover 15, and an opening 16 is provided between the case plate 14 and the case cover 15 at a portion of the front portion of the main body case 1 where the nozzle 5 protrudes. The infrared light of the seating sensor 9 reciprocates with the detection body through the opening 16.
When the toilet lid 3 is closed, the seating sensor 9 may misdetect the seated state because the amount of reflected light from the toilet lid 3 increases, but the toilet lid is closed to detect the closed state of the toilet lid 3. If the control unit 4 determines non-seating by the detection switch 11, no false detection will occur.

図7、図8は、着座センサ9の第2の実施例を示す図である。
図7において、着座センサ9は、ノズル挿通部921(図7に示す切欠き、若しくは開口穴)と、ケースプレート14への取付け部922が形成されて本体ケース1の開口部16をほぼ覆う大きさを持つユニットケース920に、投光部91と受光部92を一体化させた構成である。ユニットケース920は、投光素子93と受光素子97をノズル挿通部921を挟んで左右に配置している。このため投光素子93から出た赤外光が、着座センサ9の投光素子93と受光素子97をまたがって存在する水滴や汚れで乱反射して受光素子97に戻ることがなくなるので、乱反射による誤作動を防ぐことができる。
7 and 8 are views showing a second embodiment of the seating sensor 9.
In FIG. 7, the seating sensor 9 has a nozzle insertion portion 921 (notch or opening hole shown in FIG. 7) and an attachment portion 922 to the case plate 14 so as to substantially cover the opening portion 16 of the main body case 1. In this configuration, the light projecting unit 91 and the light receiving unit 92 are integrated with a unit case 920 having a thickness. In the unit case 920, the light projecting element 93 and the light receiving element 97 are arranged on the left and right with the nozzle insertion portion 921 interposed therebetween. For this reason, infrared light emitted from the light projecting element 93 does not return to the light receiving element 97 due to irregular reflection due to water droplets or dirt existing across the light projecting element 93 and the light receiving element 97 of the seating sensor 9. Malfunction can be prevented.

また投光素子93と受光素子97を一つのユニットケース920に一体化し、また可視光カットフィルターも一体化することにより、投光部91と受光部92を個別に取付ける場合と比べて投光素子93と受光素子97の位置関係が安定する。よって着座センサとしての性能の安定化がはかれ、また製造上も組み立て・検査などが容易になる。   Further, the light projecting element 93 and the light receiving element 97 are integrated into one unit case 920, and the visible light cut filter is also integrated, so that the light projecting element 91 and the light receiving part 92 are individually mounted. The positional relationship between 93 and the light receiving element 97 is stabilized. Therefore, the performance as a seating sensor is stabilized, and assembly / inspection is facilitated in manufacturing.

着座センサ9とノズルガイド13の間には、図8に示すように一定距離の隙間を設けているため、ノズル5から洗浄水が噴出されている状態であってもノズル5の揺動が着座センサ9に伝わることはない。   Since a gap of a certain distance is provided between the seating sensor 9 and the nozzle guide 13, as shown in FIG. 8, the nozzle 5 swings even when the cleaning water is being ejected from the nozzle 5. There is no transmission to the sensor 9.

また着座センサ9を衛生洗浄装置のケースプレート14などの大きな部品に固定したため、さらにノズルの揺動の影響が少なくなる。
このためノズル5から洗浄水が噴出されている最中でも、赤外線95の投光方向を安定させることができ、着座センサとしての性能が安定することになる。
Further, since the seating sensor 9 is fixed to a large part such as the case plate 14 of the sanitary washing device, the influence of the nozzle swing is further reduced.
For this reason, even when the washing water is being ejected from the nozzle 5, the light projecting direction of the infrared ray 95 can be stabilized, and the performance as a seating sensor is stabilized.

なお、着座センサ9は、ケースカバー15に取付けても、同じ効果が得られる。
また、本体ケース1の開口部16に着座ユニット9を取付けるのに変えて、ケースプレート14の下面に着座センサ9を取付けてもよい。
Even if the seating sensor 9 is attached to the case cover 15, the same effect can be obtained.
Further, instead of attaching the seating unit 9 to the opening 16 of the main body case 1, the seating sensor 9 may be attached to the lower surface of the case plate 14.

以上説明した衛生洗浄装置においては、着座センサ9は便座2の下から前方斜め上方向に赤外線を発光する。しかも着座センサ9はノズル5の隣に配置されており、赤外線の方向はノズル5が噴出する洗浄水とほぼ平行し、臀部との距離も近い。使用者は、局部の洗浄時に衣服が濡れないように注意するため、ノズル近傍に衣服がかかるような座り方はしない。よって、着座センサ9の検出領域に衣服が掛かることはなく、確実に使用者の臀部を検出する。   In the sanitary washing apparatus described above, the seating sensor 9 emits infrared rays from the bottom of the toilet seat 2 in the diagonally upward direction. Moreover, the seating sensor 9 is disposed next to the nozzle 5, and the direction of the infrared rays is substantially parallel to the washing water ejected from the nozzle 5, and the distance from the collar portion is also short. The user is careful not to get the clothes wet when washing the local area, so do not sit down in the vicinity of the nozzle. Therefore, clothes do not hang over the detection area of the seating sensor 9, and the user's buttocks are reliably detected.

臀部は検出体として十分な大きさであり、反射率もほぼ一定と考えられるため、赤外線センサにとっては理想的な検出体である。また、赤外光を斜め上方向に発光するため、十分な反射が得られる。よって、本発明の着座センサ9の位置及び検出方向は最適の条件である。   The buttocks are sufficiently large as a detection body and the reflectance is considered to be almost constant, so that it is an ideal detection body for an infrared sensor. Further, since infrared light is emitted obliquely upward, sufficient reflection can be obtained. Therefore, the position and detection direction of the seating sensor 9 of the present invention are optimum conditions.

また、着座センサ9は、特許文献2のような反射光の入射角度を検出する赤外線式測距センサではなく、単に反射光量を検出するものとすれば、距離センサほど敏感ではなく、汚れや水滴などの影響を受けにくい。よって、小便がかかる恐れがある位置に配置しても、比較的安定した動作が可能となる。   In addition, the seating sensor 9 is not an infrared distance measuring sensor that detects the incident angle of reflected light as in Patent Document 2, and if it simply detects the amount of reflected light, the seating sensor 9 is not as sensitive as a distance sensor, and dirt or water drops. It is hard to be influenced by such. Therefore, even if it is arranged at a position where there is a possibility of urination, a relatively stable operation is possible.

また、赤外線式測距センサは検出体の反射率が不定の場合に有効であるが、反射率が固定の条件であれば、反射光量式のセンサであっても、反射光量から距離を推定できる。
一方、赤外線式測距センサは反射光の入射角度を検出するため、レンズなどの高精度の光学系が必要となり、小型化には向かず、コストも割高になる。
よって、臀部という検出体に限れば、赤外線式測距センサと反射光量式センサの検出性能は差が少なく、形状、コストの面では反射光量式センサが優れている。
The infrared distance measuring sensor is effective when the reflectance of the detection object is indefinite, but the distance can be estimated from the amount of reflected light even if the sensor is of a reflected light amount type if the reflectance is fixed. .
On the other hand, since the infrared distance measuring sensor detects the incident angle of reflected light, a high-precision optical system such as a lens is required, which is not suitable for downsizing and is expensive.
Therefore, the detection performance of the infrared distance measuring sensor and the reflected light amount sensor is small as long as it is limited to the detection body called the buttocks, and the reflected light amount sensor is excellent in terms of shape and cost.

さらに、着座センサ9はノズル5の横に位置するため、本体ケース1の意匠的に目立つ部分ではない。更に、反射光量式であれば、赤外線式測距センサよりも小型化される。よって、着座センサ9が意匠性を損ねることはない。   Further, since the seating sensor 9 is located beside the nozzle 5, it is not a conspicuous part of the design of the main body case 1. Further, the reflected light amount type is smaller than the infrared distance measuring sensor. Therefore, the seating sensor 9 does not impair the design.

本発明に係る衛生洗浄装置の取り付け状態を示す図である。It is a figure which shows the attachment state of the sanitary washing apparatus which concerns on this invention. 図1の着座センサ部分の拡大図である。It is an enlarged view of the seating sensor part of FIG. 本発明に係る衛生洗浄装置の内部機構を示す上面図である。It is a top view which shows the internal mechanism of the sanitary washing apparatus which concerns on this invention. 本発明に係る衛生洗浄装置の機能ブロック図である。It is a functional block diagram of the sanitary washing device concerning the present invention. 本発明に係る衛生洗浄装置の着座センサの回路図である。It is a circuit diagram of the seating sensor of the sanitary washing device concerning the present invention. 着座センサの第1の実施例を示す斜視図である。It is a perspective view which shows the 1st Example of a seating sensor. 着座センサの第2の実施例を示す斜視図である。It is a perspective view which shows the 2nd Example of a seating sensor. 図7の側面図である。FIG. 8 is a side view of FIG. 7. 従来の衛生洗浄装置の外観図である。It is an external view of the conventional sanitary washing apparatus.

符号の説明Explanation of symbols

1…本体ケース
2…便座
3…便蓋
4…制御部
5…ノズル
6…ノズル駆動モータ
7…止水弁
8…熱交換器
9…着座センサ(人体検出装置)
10…便座閉検出スイッチ
11…便蓋閉検出スイッチ
12…リモコン受信部
13…ノズルガイド
14…ケースプレート(本体ケース)
16…開口部
20…便器
90…センサマイコン
93…投光素子
95…赤外線
97…受光素子
910…ユニットケース
920…ユニットケース
921…ノズル挿通部



DESCRIPTION OF SYMBOLS 1 ... Main body case 2 ... Toilet seat 3 ... Toilet lid 4 ... Control part 5 ... Nozzle 6 ... Nozzle drive motor 7 ... Water stop valve 8 ... Heat exchanger 9 ... Seating sensor (human body detection apparatus)
DESCRIPTION OF SYMBOLS 10 ... Toilet seat close detection switch 11 ... Toilet lid close detection switch 12 ... Remote control receiver 13 ... Nozzle guide 14 ... Case plate (main body case)
DESCRIPTION OF SYMBOLS 16 ... Opening part 20 ... Toilet bowl 90 ... Sensor microcomputer 93 ... Light projecting element 95 ... Infrared 97 ... Light receiving element 910 ... Unit case 920 ... Unit case 921 ... Nozzle insertion part



Claims (6)

便座と、前記便座を開閉自在に支持する本体ケースと、前記本体ケースの開口部を通して本体ケースの内外間を進退して人体局部に洗浄を吐出するノズルを具備する衛生洗浄装置において、前記便座に着座した人体臀部を検出する人体検出装置を前記開口部に設けたことを特徴とする衛生洗浄装置。 In a sanitary washing apparatus comprising a toilet seat, a main body case that supports the toilet seat in an openable and closable manner, and a nozzle that advances and retreats between the inside and outside of the main body case through the opening of the main body case and discharges cleaning to a human body local part. A sanitary washing device characterized in that a human body detecting device for detecting a seated human body part is provided in the opening. 前記人体検出装置を、前記本体ケースに取付け固定したことを特徴とする請求項1記載の衛生洗浄装置。 The sanitary washing device according to claim 1, wherein the human body detection device is attached and fixed to the main body case. 前記人体検出装置は、赤外線の投光素子及び受光素子を一体化するユニットケースを備えたことを特徴とする請求項1又は2記載の衛生洗浄装置。 The sanitary washing device according to claim 1 or 2, wherein the human body detection device includes a unit case that integrates an infrared light projecting element and a light receiving element. 前記ユニットケースは、前記ノズルの進退時の通過路となるノズル挿通部を有し、前記ノズル挿通部を挟んだ両側に前記投光素子及び受光素子をそれぞれ配置したことを特徴とする請求項3記載の衛生洗浄装置。 The said unit case has a nozzle insertion part used as the passage at the time of advance / retreat of the said nozzle, and has arrange | positioned the said light projection element and the light receiving element on the both sides on both sides of the said nozzle insertion part, respectively. The sanitary washing device described. 便座と、ケースプレート及びケースカバーからなり、前記便座を開閉自在に支持する本体ケースと、前記本体ケースの開口部を通して本体ケースの内外間を進退して人体局部に洗浄を吐出するノズルを具備する衛生洗浄装置において、前記便座に着座した人体臀部を検出する人体検出装置を前記ケースプレートの前記開口部近傍に取付けたことを特徴とする衛生洗浄装置。 A body case comprising a toilet seat, a case plate, and a case cover, and a body case for opening and closing the toilet seat, and a nozzle for advancing and retreating between the inside and outside of the body case through the opening of the body case to discharge cleaning to the human body part. In the sanitary washing device, the sanitary washing device is characterized in that a human body detecting device for detecting a human body buttock seated on the toilet seat is attached in the vicinity of the opening of the case plate. 前記人体検出装置は、赤外線の投光素子及び受光素子を一体化するユニットケースを備えたことを特徴とする請求項5記載の衛生洗浄装置。


6. The sanitary washing device according to claim 5, wherein the human body detection device includes a unit case that integrates an infrared light projecting element and a light receiving element.


JP2004088131A 2004-03-24 2004-03-24 Sanitary washing device Withdrawn JP2005273284A (en)

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JP2014190145A (en) * 2013-03-28 2014-10-06 Toto Ltd Toilet seat device
CN105247142A (en) * 2013-04-18 2016-01-13 帝希有限公司 Toilet with personal shower integrated into flushing water distributor
JP2016041572A (en) * 2014-08-13 2016-03-31 巨大機械工業股▲分▼有限公司 Device for detecting riding posture
JP2016079575A (en) * 2014-10-10 2016-05-16 Toto株式会社 Sanitary washing device
JP2019132054A (en) * 2018-01-31 2019-08-08 Toto株式会社 Toilet seat device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014190145A (en) * 2013-03-28 2014-10-06 Toto Ltd Toilet seat device
CN105247142A (en) * 2013-04-18 2016-01-13 帝希有限公司 Toilet with personal shower integrated into flushing water distributor
JP2016041572A (en) * 2014-08-13 2016-03-31 巨大機械工業股▲分▼有限公司 Device for detecting riding posture
JP2016079575A (en) * 2014-10-10 2016-05-16 Toto株式会社 Sanitary washing device
JP2019132054A (en) * 2018-01-31 2019-08-08 Toto株式会社 Toilet seat device
JP7054045B2 (en) 2018-01-31 2022-04-13 Toto株式会社 Toilet seat device

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