JP2008248669A - Toilet bowl washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet bowl washing device capable of further properly determining the kind of excrement. <P>SOLUTION: This toilet bowl washing device 1 has a toilet bowl 2, a feed valve 122 supplying wash water in a bowl part of the toilet bowl 2, a control part 150 controlling the feed valve 122, and a toilet bowl washing device body 10 storing the feed valve 122 and the control part 150 and arranged in the rear of an upper part of the toilet bowl 2. The toilet bowl washing device 1 is characterized in that a distance measuring sensor 100 detecting a falling object into the bowl, is arranged in the toilet bowl washing device body 10, and the control part 150 supplies the wash water of a water quantity corresponding to a determining result in the bowl part by controlling the feed valve 122, by determining that an evacuation act is performed by a user when the falling object passes through into a distance measuring sensor side first detecting area 200 among a detecting area of the distance measuring sensor 100, and determining that the evacuation act is performed by the user when the falling object passes through into a second detecting area 201 distant more than the first detecting area 200 among the detecting area of the distance measuring sensor 100. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a toilet bowl cleaning apparatus, and more particularly, to a toilet bowl cleaning apparatus having a distance measuring sensor that detects a falling object in a ball section by a reflected wave of light projected toward the bowl section of the toilet bowl.

  In recent years, toilet toilets equipped with an automatic cleaning function for automatically flowing cleaning water to used toilets are widely attached to toilet booths equipped with toilets.

  In the conventional toilet cleaning device having this automatic cleaning function, in order to save the cleaning water flowing in the bowl part of the toilet bowl, it is discriminated whether the excrement to the toilet bowl is stool or urine, and the cleaning water supplied to the toilet bowl is determined. Some switch the amount of water. The type of excrement (stool or urine) is determined by detecting the user's seating on the toilet seat using a sensor and the seating time. However, if the user's sitting time is long even though it is actually urinating, or if the user's sitting time is short even though it is actually defecation, there is a risk of erroneously determining whether it is stool or urine, As a result, a problem that an appropriate amount of cleaning water is not supplied may occur.

In view of this, a toilet cleaning device has been proposed that detects a user's excretion by detecting a fallen object in the toilet using a Doppler sensor, and supplies cleaning water in an amount corresponding to the excretion. (For example, Patent Document 1)
JP 2002-266407 A

  However, the invention described in Patent Document 1 detects the difference between the frequency of the microwave transmitted from the Doppler sensor and the frequency of the microwave reflected back from the falling object as an output signal, and outputs the output signal. Because it is to determine whether the excrement is stool or urine by the level and the duration of the output signal, for example, when it is a stool that is close to liquid or is hard, it has been hanging locally for a long time If the stool is a stool, the user's excretion may be judged as urination even though the stool is excretion, and the certainty of stool / urine determination is lacking.

  Then, an object of this invention is to provide the toilet bowl washing | cleaning apparatus which can determine the classification of excretion more appropriately.

  According to the first aspect of the present invention, there is provided a toilet bowl, a water supply valve that supplies cleaning water into the bowl portion of the toilet bowl, a control unit that controls the water supply valve, the water supply valve and the control unit, A toilet cleaning device having a toilet cleaning device main body disposed at an upper rear portion, wherein the toilet sensor includes a distance measuring sensor that detects a falling object in the ball portion by reflected light of light projected toward the ball portion of the toilet bowl. While being provided in the cleaning apparatus main body, the control unit determines that a defecation action has been performed by the user when the falling object passes through the first detection area on the distance measurement sensor side of the detection area of the distance measurement sensor. When the falling object passes through the second detection area farther than the first detection area among the detection areas of the distance measuring sensor, it is determined that the user has performed urination, and the determination result is determined. The washing water amount of water corresponding to and controls the water supply valve and supplying into the ball portion.

  According to a second aspect of the present invention, in the first aspect of the present invention, a seating sensor that detects the seating of the user and detects the position of the user's buttocks is seated on the toilet bowl cleaning device main body. The control unit sets a boundary position between the first detection region and the second detection region so that the first detection region is enlarged as the distance from the seating sensor to the detected heel portion increases. It is characterized by that.

  Further, the invention according to claim 3 is the invention according to claim 2, wherein the directivity direction of the distance measuring sensor is switched from the inward direction of the ball portion to the front upper direction of the toilet bowl cleaning device, or the toilet bowl cleaning device Directing direction switching means for switching from the upper front direction to the inward direction of the ball part, and the control unit switches the directivity direction of the distance measuring sensor to the upper front direction of the toilet bowl cleaning device by the directivity direction switching means. The distance measuring sensor detects the user approaching the toilet cleaning device, the distance measuring sensor detects the user approaching the toilet cleaning device, and the seating sensor is seated by the user. Is detected, the directivity direction switching means is controlled to switch the directivity direction of the distance measuring sensor to the inward direction of the ball part, and into the ball part by the distance measuring sensor. And detecting the falling object.

  According to the first aspect of the present invention, the distance measuring sensor that detects the falling object in the ball part by the reflected light of the light projected toward the ball part is provided, and the control unit is configured such that the falling object is the first object. When it passes through the detection area, it is determined that a defecation action has been made by the user, and when a fallen object passes through the second detection area, it is determined that the user has performed a urination action, and according to the determination result Since the amount of water to be washed is supplied to the ball unit by controlling the water supply valve, the type of excrement is more appropriately determined and the amount of water to be washed corresponding to the type of excrement is fed into the ball unit. It becomes possible to supply appropriately. In addition to detecting the defecation act by the user, it was also decided to detect the urination act by the user, so if the user did not excrete despite sitting on the toilet seat, supply of washing water Can not do.

  According to the second aspect of the present invention, a seating sensor for detecting the seating of the user and detecting the position of the buttocks of the user seated is provided in the toilet bowl cleaning device main body, and the control unit includes the seating The boundary position between the first detection region and the second detection region is set so that the first detection region is enlarged as the distance from the sensor to the detected heel portion increases. That is, since the boundary position is set according to the seating position of the user, the excretion action performed by the user can be more reliably determined.

  According to the third aspect of the invention, since the directivity direction switching means for switching the directivity direction of the distance measurement sensor is provided, the user can select the distance measurement sensor originally provided as the excrement detection means by switching the directivity direction. It can also function as a human body detecting means for detecting the approach to the toilet bowl cleaning device, and the toilet lid can be automatically opened based on the detection result of the human body detecting means. That is, by using the distance measuring sensor not only as the excrement detection means but also as the human body detection means, it is not necessary to separately provide a human body detection means sensor in the toilet bowl cleaning device, which can contribute to cost reduction. In addition, the distance measuring sensor detects a user approaching the toilet bowl cleaning device, and when the seating sensor detects the user's seating, the pointing direction switching means switches the pointing direction of the distance measuring sensor to the in-ball direction. The human body detecting means and the excrement detecting means can be switched at an optimum timing.

  The toilet bowl cleaning device according to the present invention stores a toilet bowl, a water supply valve for supplying cleaning water into a bowl portion of the toilet bowl, a control section for controlling the water supply valve, a water supply valve and a control section, and is arranged at the upper rear of the toilet bowl. The toilet bowl cleaning device main body, a toilet seat and a toilet lid are provided.

  In addition, the toilet cleaning device has a seating sensor that detects when the user is seated on the toilet seat, and also has an automatic cleaning function that automatically supplies toilet flushing water. When the seating sensor detects that the person has come off, the washing water can be automatically supplied.

  Further, the toilet bowl cleaning device main body has a distance measuring sensor that detects a falling object in the ball part by reflected light of light projected toward the ball part of the toilet bowl, and the control unit It is the structure which determines the excretion act by a user based on a detection result. That is, the control unit determines that the defecation action is performed by the user when the falling object passes through the first detection area on the distance measuring sensor side in the detection area of the distance measuring sensor. When the sensor passes through the second detection area farther from the distance measuring sensor than the first detection area, it is determined that the user has performed urination, and the amount of flush water according to the determination result Is supplied into the ball part by controlling the water supply valve. Here, the first detection area is an area set so as to sufficiently cover the statistically determined stool fall position as described later, and the second detection area is the statistically calculated urine fall. Since it is an area that is set so as to sufficiently cover the position, by adopting the configuration as described above, it is possible to more appropriately determine the excretion act by the user, and supply the amount of flush water corresponding to the excretion act The valve can be controlled and supplied. In addition to detecting the defecation act by the user, it was also decided to detect the urination act by the user, so if the user did not excrete despite sitting on the toilet seat, supply of washing water Can not do.

  Further, the seating sensor can detect the position of the buttocks of the user who is seated, and the control unit can detect the first detection area and the first detection area in the detection area of the distance measuring sensor according to the position of the buttocks detected by the seating sensor. It can also be set as the structure which sets the boundary position with 2 detection area | regions. By setting it as this structure, the excretion act which the user performed can be determined more reliably.

  Further, the toilet bowl cleaning device switches the direction of the distance measuring sensor from the direction in the bowl portion of the toilet bowl to the upper front direction of the toilet bowl cleaning device, or the direction switching that switches from the upper front direction of the toilet bowl cleaning device to the inner direction of the ball section A user who has approached the distance measuring sensor close to the toilet cleaning device by switching the pointing direction of the distance measuring sensor to the upper front direction of the toilet cleaning device using the directivity direction switching means. It can be made to function as a human body detection means to detect. Then, by causing the distance measuring sensor to function as the human body detection means, it is possible to automatically open the toilet lid based on the detection result of the human body detection means. Thus, by using the distance measuring sensor not only as the excrement detection means but also as the human body detection means, it is not necessary to separately provide a sensor for the human body detection means in the toilet bowl cleaning device, which contributes to cost reduction. .

  In addition, the distance measuring sensor detects a user approaching the toilet bowl cleaning device, and when the seating sensor detects the user's seating, the pointing direction switching means switches the pointing direction of the distance measuring sensor to the in-ball direction. The human body detecting means and the excrement detecting means can be switched at an optimum timing.

  Hereinafter, an embodiment of a toilet bowl cleaning apparatus according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an external view of a toilet bowl cleaning apparatus in the present embodiment.

  As shown in FIG. 1, a toilet bowl cleaning device 1 according to this embodiment includes a toilet bowl 2 installed in a toilet booth, a toilet bowl cleaning apparatus body 10 attached to the upper rear of the toilet bowl 2, and a toilet bowl cleaning apparatus body 10. A toilet seat 20 that is movably connected and a toilet lid 30 that is also rotatably connected to the toilet bowl cleaning device main body 10 are provided.

  The toilet 2 is a toilet for both large and small urinals, and the rear end of the toilet 2 is connected to the water pipe, and the downstream end is opened at a predetermined position in the ball portion of the toilet 2. A water pipe (not shown) is installed.

  The toilet lid 30 and the toilet seat 20 of the toilet bowl cleaning device 1 are movable within a range of about 90 degrees with the support shaft 11 as a rotation axis.

  Here, the configuration of the toilet bowl cleaning apparatus main body 10 will be described with reference to FIG. FIG. 2 is a block configuration diagram of the toilet bowl cleaning apparatus main body 10 in the present embodiment.

  As shown in FIG. 2, the toilet bowl cleaning apparatus main body 10 includes a distance measuring sensor 100 that detects a falling object in the ball portion of the toilet bowl 2, a seating sensor 110 that detects that the user is seated on the toilet seat 20, and a toilet bowl The cleaning water supply unit 120 for supplying cleaning water into the ball part 2, the distance sensor driving unit 130 that drives the distance sensor 100 to switch the direction of the distance sensor 100, and the toilet lid 30 is opened and closed The toilet lid driving unit 140 is driven, and the control unit 150 is configured to control them. The cleaning water supply unit 120 and the control unit 150 are accommodated in the toilet bowl cleaning apparatus main body 10.

  The control unit 150 that controls the entire toilet bowl cleaning apparatus main body 10 includes a CPU (Central Processing Unit), a RAM (Random Access Memory) used as a working memory, and the like. In addition, a program for controlling the toilet bowl cleaning device body 10 is stored in a storage unit 151 composed of a ROM (Read Only Memory) or the like, and the CPU reads and executes the program stored in the storage unit 151. By doing so, the toilet bowl cleaning apparatus main body 10 is controlled.

  Here, the distance measuring sensor detects the distance to the distance measuring object by projecting light and receiving the reflected light, and the configuration of the distance measuring sensor 100 in the present embodiment will be described below. Will be described with reference to FIGS. FIG. 3 is a schematic configuration diagram of the distance measuring sensor, FIG. 4 is a graph showing the relationship between the output voltage obtained from the distance measuring sensor 100 and the distance from the sensor 100 to the falling object, and FIG. 5 is a distance measuring sensor. FIG. 5A is a plan view of the toilet bowl cleaning device 1, and FIG. 5B is a side sectional view of the toilet bowl cleaning device 1.

  The distance measuring sensor 100 in the present embodiment functions as excrement detection means for detecting falling objects into the ball part of the toilet 2, and for projecting light onto the falling objects as shown in FIG. The light emitting element 101 and the light receiving element 102 that receives the reflected light reflected by the falling object are roughly configured. In the figure, reference numeral 103 denotes a light condensing lens for condensing the light to be projected, and reference numeral 104 denotes a light receiving condensing lens for condensing the reflected light.

  The light receiving element 102 is configured by a PSD (Position Sensitive Device). The PSD is a position detection element made of a semiconductor, and when receiving reflected light due to contact with the falling object M, a voltage that is inversely proportional to the distance from the position where the reflected light is received to the electrode is output. The position where the PSD receives the reflected light varies depending on the position where the light projected from the light emitting element 101 comes into contact with the falling object M. Therefore, by performing a predetermined calculation, the distance from the distance measuring sensor 100 to the falling object M is calculated. The distance can be measured.

  The output voltage obtained from the light receiving element 102 and the distance from the distance measuring sensor 100 to the fallen object M have an inversely proportional relationship as shown in FIG. 4, and are set so as to detect only a predetermined voltage range. It is possible to detect only falling objects that have passed through a desired distance range. For example, when it is desired to detect only a fallen object that has passed through the distance range from a to b, the voltage is set to detect only the voltage in the range from A to B.

  In the present embodiment, the desired distance range is set to a range through which excrement and toilet paper pass when the user performs excretion, and the predetermined range over which the distance measuring sensor 100 is applied falls. By detecting the passage, the control unit 150 can determine that the user has excreted.

  As shown in FIGS. 5A and 5B, the distance measuring sensor 100 in the present embodiment is provided at the lower end of the front end of the toilet bowl cleaning apparatus main body 10. That is, the distance measuring sensor 100 is provided below the toilet seat 20 corresponding to the back portion of the seated user. Moreover, the light projected from the light emitting element 101 is projected toward the front surface of the ball portion, so that it is possible to cover the fall path of the toilet excrement of the user and the toilet paper that wipes the local portion.

  Furthermore, the light projected from the light emitting element 101 is projected within a range that does not hit the water accumulated in the ball portion and the user's body (mainly the user's buttocks). By projecting light in such a range, for example, it is possible to prevent accidental detection of excrement etc. floating in the water or the user's buttocks, so that falling objects can be detected more accurately. Can do. In addition, the range which does not hit a user's body is obtained from the result of having calculated | required statistically the sinking degree of the buttocks when the man and woman from a child to an adult seated on the toilet seat 20. FIG.

  The distance measuring sensor 100 according to the present embodiment uses a predetermined area on the distance measuring sensor 100 side in the detection area as a first detection area 200 (distance range from a to b in FIG. 4), which is farther than the first detection area. The predetermined area is a second detection area 201 (b to c in FIG. 4). The boundary position 202 between the first detection area 200 and the second detection area 201 is determined by statistically calculating the excrement dropping position and the toilet paper dropping position in men and women from children to adults. .

  As described above, when the falling object that has passed through the first detection area 200 or the second detection area 201 is detected using the distance measuring sensor 100 and the falling object has passed through the first detection area 200, it is used. When it is determined that a defecation action has been made by the person and the fallen object has passed through the second detection area 201, it is determined that the user has made a urination action. It becomes possible to supply cleaning water of an amount corresponding to the excretion action by controlling the water supply valve.

  Moreover, since it is supposed not only to detect the defecation action by the user but also to detect the urination action by the user, for example, when the user has sat on the toilet seat 20 but does not excrete at all, It is possible to prevent water from being supplied. In other words, by adopting such a configuration, the control unit 150 not only determines whether a defecation action has been performed by the user or whether a urination action has been performed, but can also determine whether the excretion action itself has been performed. Because it becomes possible, it can contribute to further water saving.

  The distance measuring sensor 100 can detect not only excrement but also toilet paper or the like that wipes the user's local area. Here, for example, when a user who sits on the toilet seat 20 and urinates throws the toilet paper into the ball part of the toilet 2, it is difficult to bother to throw it away from the back of his buttocks. There is no risk of a decision being made.

  Next, the configuration of the seating sensor 110 will be specifically described with reference to FIGS. 1, 6, and 7. FIG. 6 is a diagram showing the relationship between the seating position of the user on the toilet seat 20 and the boundary position 202, and FIG. 6A is a diagram showing the seating state of the user seated at the average seating position. FIG. 6B is a diagram showing a boundary position corresponding to the seating state of the user, and FIG. 7 is a diagram showing a relationship between the seating state of the user on the toilet seat 20 and the boundary position 202. FIG. 7A is a diagram showing a seated state of a user seated forward from the average seating position, and FIG. 7B is a diagram showing a boundary position corresponding to the seating position of the user. It is.

  As shown in FIG. 1, the seating sensor 110 is provided on the front upper portion of the toilet bowl cleaning apparatus main body 10, and is configured by the same sensor as the distance measuring sensor 100 described above. The seating sensor 110 functions as an automatic cleaning means that automatically supplies cleaning water into the ball portion when the user is no longer detected.

  Further, since the seating sensor 110 uses the same sensor as the distance measuring sensor 100 described above, the seating sensor 110 can detect the distance to the user's buttocks that are seated, and the control unit 150 can detect the detection result. Based on this, the boundary position 202 between the first detection area 200 and the second detection area 201 can be set. That is, the control unit 150 sets the boundary position 202 so that the first detection region 200 is enlarged as the distance to the buttocks detected by the seating sensor 110 increases, thereby further reducing the excretion performed by the user. It can be determined with certainty. For example, as shown in FIG. 6 (a), the user's seating position may be an average position, but for example, as shown in FIG. 7 (a), the user increases the average seating position. When seated in front of the detached toilet seat 20, if the excrement or toilet paper passes through the second detection area even though the user's excretion is excretion, the control unit 150 causes the user to urinate. It is determined that an action has been made. Therefore, this situation can be avoided by setting the boundary position 202 based on the distance to the user's buttocks measured by the seating sensor 110.

  The cleaning water supply unit 120 includes a water supply valve 122 that supplies cleaning water into the ball unit, and a water supply valve driving unit 121 that drives the water supply valve 122. The cleaning water supply unit 120 is connected to a cleaning water pipe to supply cleaning water into the ball unit. Can be supplied.

  The control unit 150 controls the water supply valve driving unit 121 to control the open state of the water supply valve 122. That is, when the distance measuring sensor 100 detects that the fallen object has passed through the first detection area 200, the control unit 150 determines that a defecation action has been performed by the user and determines that the user has passed through the second detection area 201. When detected, it is determined that the user has performed urination. Further, when the seating sensor 110 no longer detects the user, it is determined that the user's excretion has ended, and the water supply valve drive unit 121 is driven to change the open state of the water supply valve 122. At this time, when the control unit 150 determines that the user's excretion action is defecation, the control valve 150 opens the water supply valve 122 for a predetermined time corresponding to the defecation as a large wash, and the user's excretion action is urination. When the determination is made, the water supply valve 122 is opened for a predetermined time corresponding to urination as small washing. In the present embodiment, the predetermined time is a time when the total amount of cleaning water supplied is 8 liters in the case of large cleaning, and is a time when the total amount of cleaning water supplied is 6 liters in the case of small cleaning. is there. As described above, since the cleaning water of the amount corresponding to the determination result of the control unit 150 is supplied to the ball unit by controlling the water supply valve, the cleaning water of the amount corresponding to the type of excrement is appropriately supplied into the ball unit. It becomes possible to supply.

  Next, the configuration of the distance measuring sensor driving unit 130 will be specifically described with reference to FIG. FIG. 8 is a diagram illustrating a case where the distance measuring sensor 100 functions as a human body detection unit, and FIG. 8A illustrates a case where light to be projected passes through the transparent portion 31 of the toilet lid 30. FIG. 8B is a diagram showing a case where the light to be projected passes through the gap between the toilet seat 20 and the upper end of the toilet 2, and FIG. 8C is a diagram in which the distance measuring sensor 100 is excreted from the human body detecting means. It is the figure which showed a mode that it switched to the object detection means.

  The distance sensor driving unit 130 functions as a directivity direction switching unit, and switches the directivity direction of the distance sensor 100 from the ball portion inner direction to the front upper direction of the toilet bowl cleaning device 1 based on the control of the control unit 150. Thereby, the control part 150 can function the distance measuring sensor 100 originally provided as the excrement detection means as a human body detection means for detecting that the user has approached the toilet cleaning device 1. In addition, when the directivity direction of the distance measurement sensor 100 is switched to the upper front direction of the toilet bowl cleaning device 1 by the directivity direction switching unit, the control unit 150 determines a user who has approached the toilet bowl cleaning device 1 by the distance measurement sensor 100. When the distance sensor 100 detects the user approaching the toilet bowl cleaning device 1 and the seat sensor 110 detects the user's seat, the directivity direction switching means is controlled to change the directivity direction of the distance sensor 100. The distance measuring sensor 100 is made to function as the excrement detection means by switching to the inward direction of the ball part.

  As shown in FIG. 8, the distance measuring sensor driving unit 130 in the present embodiment switches the directing direction by only rotating without moving the position of the distance measuring sensor 100. The distance measuring sensor 100 functions as the human body detecting means when the user is not using the toilet bowl cleaning device 1, that is, when the toilet lid 30 is closed. As shown in FIG. 1, it has the transparent part 31 formed with the transparent material which can permeate | transmit the light which projects the predetermined range of a front-end | tip. With this configuration, it is possible to project light toward the user even when the toilet lid 30 is closed. The light projecting direction may pass through the transparent part 31 of the toilet lid 30 as shown in FIG. 8 (a), or the toilet seat 20 and the toilet bowl as shown in FIG. 8 (b). The light may be projected aiming at the gap between the upper end of the two. Also, reference numeral 203 in FIG. 4 indicates a detection area of the distance measuring sensor 100 as a human body detection means.

  When the distance measuring sensor 100 as the human body detecting means detects the user approaching the toilet bowl cleaning device 1, the toilet lid driving unit 140 automatically opens the toilet lid 30 based on the control of the control unit 150. . In addition, when the seating sensor 110 no longer detects the user, the toilet lid driving unit 140 automatically closes the toilet lid 30 based on the control of the control unit 150.

  The automatic cleaning process in the toilet bowl cleaning device 1 configured as described above will be described more specifically with reference to FIG. FIG. 9 is a flowchart of the automatic cleaning process.

  As shown in FIG. 9, when the automatic cleaning process is started, the control unit 150 determines whether or not the user has approached the toilet bowl cleaning device 1 (step S100). This determination is made based on whether or not the distance measuring sensor 100 in a state of functioning as the human body detecting means has detected a user approaching the toilet bowl cleaning device 1. In this process, when it is determined that the user has approached the toilet bowl cleaning device 1 (step S100: Yes), the control unit 150 automatically opens the toilet lid 30 by driving the toilet lid driving unit 140 (step S101). ).

  Next, the control unit 150 determines whether or not the user is seated on the toilet seat 20 (step S102). This determination is made based on whether or not the seating sensor 110 has detected a user seated on the toilet seat 20. In this process, when it is determined that the user is seated on the toilet seat 20 (step S102: Yes), the control unit 150 measures the distance from the seating sensor 110 to the user's buttocks (step S103). This measurement is performed using the seating sensor 110, and the control unit 150 sets a boundary position 202 between the first detection area 200 and the second detection area 201 based on the measurement result (step S104). Thus, by setting the boundary position 202 between the first detection area 200 and the second detection area 201 according to the position where the user is seated on the toilet seat 20, whether the user's excretion action is defecation or urination Can be determined more accurately.

  Next, the control unit 150 switches the directivity direction of the distance measuring sensor 100 in order to cause the distance measuring sensor 100 in the state functioning as the human body detecting means to function as the excrement detecting means (step S105). The switching of the directivity direction is performed by driving the distance measuring sensor driving unit 130.

  Next, the control unit 150 determines whether or not the user has performed a bowel movement (step S106). This determination is made based on whether or not the fallen object detected by the distance measuring sensor 100 has passed through the first detection area 200. In this process, when it is determined that the user has performed a defecation action (step S106: Yes), the control unit 150 shifts the process to step S107.

  In step S107, the control unit 150 determines whether or not the user has left the toilet seat 20 (that is, whether or not the user has left the toilet seat 20). This determination is based on whether the seating sensor 110 is out of the detection area of the seating sensor 110 or not. In this process, when it is determined that the user has moved away from the toilet seat 20 (step S107: Yes), the control unit 150 supplies a quantity of flush water corresponding to the defecation action (S108). This process is performed by the control unit 150 controlling the water supply valve driving unit 121 to open the water supply valve 122 for a time corresponding to defecation.

  If it is determined in step S106 that the user has not performed the defecation action (step S106: No), the control unit 150 determines whether or not the user has performed the urination action (step S109). This determination is made based on whether or not the fallen object detected by the distance measuring sensor 100 has passed through the second detection area 201. In this process, when it is determined that the user has performed urination (step S109: Yes), the control unit 150 shifts the process to step S110.

  In step S <b> 110, the control unit 150 determines whether the user has left the toilet seat 20. This determination is the same as in step S107, and the seating sensor 110 determines whether or not the user has deviated from the detection area of the seating sensor 110. In this process, when it is determined that the user has moved away from the toilet seat 20 (step S110: Yes), the control unit 150 supplies a quantity of flush water corresponding to the urination action (step S111). This process is performed when the control unit 150 controls the water supply valve drive unit 121 to open the water supply valve 122 for a time corresponding to urination.

  If it is not determined in step S110 that the user has left the toilet seat 20, the control unit 150 proceeds to step S106.

  When it is not determined in step S109 that the user has performed urination (step S109: No), the control unit 150 determines whether the user has left the toilet seat 20 (step S112). In this process, when it is not determined that the user has moved away from the toilet seat 20 (step S112: No), the control unit 150 shifts the process to step S106.

  When the processes of step S108 and step S111 are completed, or when it is determined in step S112 that the user has left the toilet seat 20 (step S112: Yes), the control unit 150 measures the directivity direction of the distance measuring sensor 100. By switching using the distance sensor driving unit 130, the distance measuring sensor 100 is caused to function as a human body detecting unit (step S113).

  If it is determined in step S102 that the user is not seated on the toilet seat 20 (step S102: No), the control unit 150 continues to use the distance measuring sensor 100 that is functioning as the human body detection means for 6 seconds or more. It is determined whether or not a person has been detected (step S114). In this process, if it is determined that the distance measuring sensor 100 that is functioning as the human body detecting means has continuously detected the user for 6 seconds or more (step S114: Yes), the control unit 150 determines that the user has measured the distance. When deviating from the detection area of the sensor 100, it is set to supply cleaning water with an amount of water corresponding to urination into the ball portion (step S115).

  Next, the control unit 150 determines whether or not the user is out of the detection area of the distance measuring sensor 100 (step S116). In this process, if it is determined that the user has deviated from the detection area of the distance measuring sensor 100 (step S116: Yes), the control unit 150 supplies cleaning water with an amount of water corresponding to the urination action into the ball unit (step S117). . This process is performed when the control unit 150 controls the water supply valve drive unit 121 to open the water supply valve 122 for a time corresponding to urination.

  When the processes of step S113 and step S117 are completed, or when it is not determined that the distance measuring sensor 100 functioning as the human body detection unit in step S114 has detected the user continuously for 6 seconds or more, the control unit 150 ends the automatic cleaning process.

  As mentioned above, although one embodiment of the present invention was described in detail based on a drawing, these are illustrations and implement the present invention in other forms which carried out various modification and improvement based on the knowledge of those skilled in the art. Is possible.

  For example, as shown in FIG. 11A, the distance sensor driving unit 130 may be a cylindrical support member that is supported inside the toilet bowl cleaning apparatus main body 10 and holds the distance sensor 100 at its distal end. . That is, the distance measuring sensor 100 is attached to the tip of the supporting member. For example, as shown in FIG. 11A, the position of the distance measuring sensor 100 functioning as the human body detecting means is changed to the supporting member. It can be moved by rotating to function as excrement detection means as shown in FIG.

  When the distance measuring sensor 100 functions as a human body detecting means, the distance measuring sensor 100 is located in the upper front part of the toilet bowl cleaning apparatus body 10 as shown in FIG. Such a position is a position that is exposed to the outside even when the toilet lid 30 is closed, so that it is possible to project light toward the user without making part of the toilet lid 30 transparent. it can. In addition, when the seating sensor 110 detects the user seated on the toilet seat 20, the distance measuring sensor driving unit 130 is driven based on the control by the control unit 150 to measure the position where light can be projected into the ball part of the toilet bowl 2. The distance sensor 100 is disposed. Thereby, the distance measuring sensor 100 can function as excrement detection means.

It is an external view of the toilet bowl washing | cleaning apparatus in this embodiment. It is a block block diagram of the toilet bowl washing | cleaning apparatus main body in this embodiment. It is a schematic block diagram of the ranging sensor in this embodiment. It is a graph showing the relationship between the output voltage obtained from the distance measuring sensor in this embodiment and the distance from the sensor to a falling object. It is the figure which showed the detection area | region of the ranging sensor in this embodiment, Comprising: Fig.5 (a) is a top view of a toilet bowl washing | cleaning apparatus, FIG.5 (b) is a sectional side view of a toilet bowl washing | cleaning apparatus. FIG. 6A is a diagram showing the relationship between the seating position of the user on the toilet seat and the boundary position, and FIG. 6A is a diagram showing the seating state of the user seated at the average seating position, FIG. ) Is a diagram showing boundary positions corresponding to the sitting state of the user. FIG. 7 is a diagram illustrating a relationship between a user's seated state on the toilet seat and a boundary position, and FIG. 7A is a diagram illustrating a seated state of the user seated forward from the average seating position. FIG. 7B is a diagram showing a boundary position corresponding to the seating position of the user. It is the figure which showed the case where the distance measuring sensor of the toilet bowl washing | cleaning apparatus in this embodiment functions as a human body detection means, Comprising: Fig.8 (a) showed the case where the light to project passes the transparent part of a toilet lid. FIG. 8B is a diagram showing a case where the light to be projected passes through the gap between the toilet seat and the upper end of the toilet bowl, and FIG. 8C is a diagram in which the distance measuring sensor detects excrement from the human body detection means. It is the figure which showed a mode that it switched to the means. It is an automatic washing process flowchart figure of the toilet bowl washing device in this embodiment. It is the figure which showed a mode that the ranging sensor of the toilet bowl washing | cleaning apparatus in other embodiment was functioning as a human body detection means, Comprising: Fig.10 (a) is a sectional side view of a toilet bowl washing apparatus, FIG.10 (b) ) Is a diagram showing a user sitting on the toilet bowl cleaning device. It is an external view of the toilet bowl washing | cleaning apparatus in other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet bowl washing | cleaning apparatus 10 Toilet bowl washing apparatus main body 20 Toilet seat 30 Toilet lid 100 Distance sensor 110 Seating sensor 122 Water supply valve 130 Distance sensor drive part 140 Toilet lid drive part 150 Control part 200 1st detection area 201 2nd detection area 202 Boundary position

Claims (3)

Toilet bowl, water supply valve for supplying cleaning water into the bowl portion of the toilet bowl, a control section for controlling the water supply valve, and a toilet bowl cleaning apparatus that houses the water supply valve and the control section and is arranged at the upper rear of the toilet bowl In the toilet bowl cleaning device having a main body,
While providing a distance measuring sensor in the toilet cleaning device main body for detecting a falling object into the ball portion by reflected light of light projected toward the ball portion of the toilet bowl,
The controller is
When the falling object passes through the first detection area on the distance sensor side of the detection area of the distance sensor, it is determined that a defecation act is performed by the user,
When the fallen object passes through the second detection area farther than the first detection area among the detection areas of the distance measuring sensor, it is determined that the user has performed urination.
A toilet bowl cleaning device, wherein the flush water in an amount corresponding to the determination result is supplied into the ball portion by controlling the water supply valve. A seating sensor for detecting the seating of the user and detecting the position of the buttocks of the user seated is provided in the toilet bowl cleaning device body,
The controller is
The boundary position between the first detection area and the second detection area is set so that the first detection area is enlarged as the distance from the seating sensor to the detected heel increases. The toilet bowl cleaning apparatus according to 1. A direction direction switching means for switching the direction of the distance measuring sensor from the ball portion inner direction to the front upper direction of the toilet bowl cleaning device, or from the front upper direction of the toilet bowl cleaning device to the ball portion inner direction,
The controller is
When the directivity direction of the distance measuring sensor is switched to the upper front direction of the toilet bowl cleaning device by the directivity direction switching means, the distance sensor detects the user approaching the toilet cleaning device,
When the ranging sensor detects the user approaching the toilet cleaning device and the seating sensor detects the user's seating, the directivity direction switching means is controlled to change the directivity direction of the ranging sensor. The toilet bowl cleaning device according to claim 2, wherein the toilet bowl cleaning device is switched to the inward direction of the ball portion, and the falling object is detected by the distance measuring sensor.

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