JP2008280672A - Sanitary flushing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary flushing device capable of preventing the adhesion of filth to a toilet bowl while preventing the adhesion of flushing water to a human body. <P>SOLUTION: The sanitary flushing device comprises a rotatable blowout part 40 for blowing out flushing water toward the inner surface of a toilet bowl 700, a driving means 40m for rotating the blowout part 40, an energizing means 40S for energizing the blowout part 40, and a shielding member 40K provided to surround the blowout part 40. The blowout part 40 is provided so as to be selectively stopped in a housing position where the scattering of flushing water is prevented by the shielding member 40K and a toilet flushing position where the scattering is not prevented. The energizing means 40S energizes the blowout part 40 toward the housing position, and the blowout part blows out flushing water obliquely upward to the front. Since the blowout part 40 is rotated to the housing position by the energizing means 40S in the event of an operation failure of the driving means 40m, a jet flow is not scattered forward, and a user can use the sanitary flushing device in sitting. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sanitary washing device for pre-washing a toilet before use.

  Conventionally, various sanitary washing apparatuses have been developed in order to prevent filth from adhering to the toilet bowl (see, for example, Patent Document 1).

In the sanitary washing device described in Patent Document 1, when a person sits on the toilet seat, the washing water is discharged from the toilet nozzle toward the inner surface of the toilet bowl. Thereby, the inner surface of the toilet is wetted by the washing water, and the filth is prevented from adhering to the toilet.
JP-A-7-189319

  In the sanitary washing device described in Patent Document 1, the toilet nozzle is fixed to the sanitary washing device, and the ejection direction of the washing water is also fixed in a certain direction. Therefore, the water pressure adjusting device built in the sanitary washing device fails and the toilet bowl is broken. When the amount of water supplied to the nozzle increases abnormally, the water flow of the jet from the toilet nozzle is strong, and the toilet may jump out.

  In addition, because the toilet nozzle is fixedly installed in a state where it protrudes from the sanitary washing device body, external force acts on the toilet nozzle when installing the sanitary washing device or when the user cleans the sanitary washing device. However, there is a possibility that the nozzle installation angle may change or break.

  In addition, when the method of reducing the influence of fluctuations in the source pressure with the constant flow valve is used as the flow rate adjustment means of the toilet nozzle, the constant flow rate is adjusted so that it flows through the constant flow valve. Is set to flow more than the flow rate used for butt washing, etc. for stable operation. Therefore, at the time of washing the butt, the amount of water used for washing the butt is discarded as waste water and discharged into the toilet through the waste water circuit. When the toilet nozzle is connected to the waste water circuit and waste water is used for the toilet nozzle, this waste water is always discharged from the toilet nozzle into the toilet, so switching between pre-cleaning operation and simple waste water operation is used. It must be realized without causing any inconvenience to the user.

  An object of the present invention is to provide a protection means when fluctuations in water pressure or external force are applied to a toilet nozzle that prevents filth from adhering to the toilet while preventing the cleaning water from adhering to the human body. It is.

  In order to solve the above-described conventional problems, a sanitary washing device according to the present invention is configured to rotate a jetting portion provided on a rear side of a toilet so as to jet flushing water radially toward the inner surface of the toilet, and a jetting portion. A drive unit that moves, an urging unit that urges the ejection part, and a shielding member that is provided so as to surround the ejection part, and the ejection part is stored in which scattering of the washing water to the front is prevented by the shielding member The urging means urges the ejection part in the direction of the storage position, and the urging means irrigates the flush water forward and obliquely at the toilet washing position. It is characterized by ejecting.

As a result, even when the driving means malfunctions, the urging means rotates the ejection means to the storage position, so that the jet does not scatter forward and the user sits and uses the sanitary washing device. be able to.

  According to the present invention, even if any failure occurs in the driving means, the washing water adheres to the human body, and the washing water jumps out of the toilet bowl to prevent water leakage, while the filth is in the toilet bowl. It can suppress adhering.

  A first aspect of the present invention is a sanitary washing device that ejects wash water supplied from a supply source to a toilet having a front part and a rear part, and the wash water is radially directed toward the inner surface of the toilet on the rear side of the toilet. A jetting part that is pivotably provided for jetting, a driving means for pivoting the jetting part, a biasing means for biasing the jetting part in one pivoting direction, and the jetting on the rear side of the toilet A shielding member provided so as to surround the front side and both side sides of the part, and the ejection part includes a storage position where splashing of the cleaning water ejected from the ejection part to the front is blocked by the shielding member. The forward scattering is provided so as to be selectively stopped at a toilet cleaning position where the forward scattering is not blocked by the shielding member, the biasing means biases the ejection portion toward the storage position, and the ejection portion is the toilet bowl. In the cleaning position, wash water forward By ejecting upward, the ejecting part is normally urged in the direction of the storage position where the splash of the washing water ejected from the ejecting part is prevented by the shielding member, so that the driving means operates. Even when there is a problem, since there is means for rotating the nozzle to the storage position, the jet does not scatter forward, and the user can sit and use the sanitary washing device.

  According to a second aspect of the invention, particularly in the first aspect of the invention, the urging means rotates the ejection portion to the storage position against the resistance force when the drive means is not movable and the tension of the pipe connected to the ejection portion. Since the urging force is provided, the ejection part is always stopped at the storage position when the drive means is not movable. Therefore, even if the drive means malfunctions, the ejection part always rotates to the storage position. Therefore, even if the washing water spouts out, the jet does not scatter forward, and the user can sit and use the sanitary washing device.

  According to a third aspect of the present invention, in particular, in the first or second aspect of the invention, the shape of the shielding member prevents the washing water ejected from the ejection portion from jumping out of the toilet bowl regardless of the rotation position of the ejection portion. Therefore, no matter where the squirting part squirts washing water, it does not scatter outside the toilet, so even if the drive means or squirting part fails, the squirting part stops at any position. Even if it does, the jet will not go over the toilet surface and wet the floor of the toilet space.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

<1> Appearance of sanitary washing device and toilet device provided with the same FIG. 1 is an external perspective view showing a sanitary washing device and a toilet device provided therewith according to an embodiment of the present invention. The toilet apparatus 1000 is installed in a toilet room.

  In the toilet apparatus 1000, the sanitary washing apparatus 100 is attached to the toilet bowl 700. The sanitary washing device 100 includes a main body 200, a remote operation device 300, a toilet seat 400 and a lid 500. Each component of the sanitary washing device 100 excluding the lid 500 constitutes a toilet seat device 110 described later.

  A toilet seat 400 and a lid 500 are attached to the main body 200 so as to be openable and closable. The main body 200 is provided with a cleaning water supply mechanism (not shown) and a control unit 90 (FIG. 3) described later.

  In FIG. 1, a seating sensor 610 provided in the upper front portion of the main body 200 is shown. The seating sensor 610 is, for example, a reflective infrared sensor. In this case, the seating sensor 610 detects the presence of a user on the toilet seat 400 by detecting infrared rays reflected from the human body.

  Further, FIG. 1 shows a state in which the toilet nozzle 40 provided at the lower front portion of the main body 200 protrudes inside the toilet 700. The toilet nozzle 40 is connected to the above-described washing water supply mechanism.

  The washing water supply mechanism is connected to a water pipe (not shown). Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the toilet nozzle 40. Thereby, washing water is ejected from the toilet nozzle 40 to a wide area on the inner surface of the toilet 700 (toilet bowl pre-washing). Alternatively, washing water is ejected from the toilet nozzle 40 to the back side of the inner surface of the toilet 700 (toilet rear cleaning). Details will be described later.

  The cleaning water supply mechanism is connected to a nozzle unit 20 (FIG. 3) described later. Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the nozzle unit 20. Thereby, washing water is ejected from the nozzle part 20 to a user's local part.

  The remote operation device 300 is provided with a plurality of switches. The remote control device 300 is attached to a place where a user sitting on the toilet seat 400 can operate, for example.

  The entrance detection sensor 600 is attached to an entrance of a toilet room or the like. The entrance detection sensor 600 is, for example, a reflective infrared sensor. In this case, the entrance detection sensor 600 detects that the user has entered the toilet room when detecting infrared rays reflected from the human body.

  The control unit 90 (FIG. 3) of the main body 200 controls the operation of each part of the sanitary washing device 100 based on signals transmitted from the remote operation device 300, the room entry detection sensor 600 and the seating sensor 610.

<2> Configuration of Remote Operation Device FIG. 2 is a front view of the remote operation device 300 of FIG. The remote operation device 300 has a structure in which a controller lid 302 is provided at the bottom of the controller main body 301 so as to be freely opened and closed.

  As shown in FIG. 2A, a drying switch 320, strength adjustment switches 322 and 323, and position adjustment switches 325 and 326 are provided on the top of the controller main body 301 with the controller lid 302 closed. The controller lid 302 is provided with a stop switch 311, a butt switch 312 and a bidet switch 313.

  The above switches are operated by the user. Thereby, a predetermined signal corresponding to each switch is wirelessly transmitted from the remote operation device 300 to the main body 200 of FIG. The control unit 90 (FIG. 3) of the main body 200 controls the operation of each component of the main body 200 (FIG. 1) and the toilet seat 400 (FIG. 1) based on the received signal.

For example, when the user operates the buttocks switch 312 or the bidet switch 313, cleaning water is ejected from a nozzle unit 20 (FIG. 3), which will be described later, to the user's local area. Further, when the user operates the stop switch 311, the ejection of the washing water from the nozzle unit 20 to the user's local part is stopped.

  When the user operates the drying switch 320, hot air is jetted from a drying unit 210 (FIG. 64), which will be described later, to the user's local area. Further, when the user operates the strength adjustment switches 322 and 323, the flow rate, pressure, and the like of the cleaning water sprayed to the local area of the user are adjusted.

  Further, when the user operates the position adjustment switches 325 and 326, the position of the posterior nozzle 21 (FIG. 3) described later or the bidet nozzle 22 (FIG. 3) described later is adjusted. Thereby, the ejection position of the washing water to the user's local area is adjusted.

  FIG. 2B shows a front view of the remote operation device 300 in a state where the controller lid 302 is opened. As shown in FIG. 2B, in addition to the stop switch 311, the butt switch 312, and the bidet switch 313, an automatic opening / closing switch 331, a water temperature adjustment is provided below the controller body 301 covered by the controller lid 302. A switch 332, a toilet seat temperature adjustment switch 333, a sterilization switch 335, and a toilet flushing switch 336 are provided.

  Even when these switches are operated, a predetermined signal corresponding to each switch is wirelessly transmitted from the remote operation device 300 to the main body 200. Thereby, the control part 90 of the main-body part 200 controls operation | movement of each structure part of the main-body part 200 and the toilet seat part 400 based on the received signal.

  The automatic opening / closing switch 331 is constituted by a knob. When the user operates the knob of the automatic opening / closing switch 331, the opening / closing operation of the lid 500 (FIG. 1) is set. That is, when the knob of the automatic opening / closing switch 331 is in the ON position, the lid 500 is opened / closed in response to the user entering the toilet room.

  When the user operates the water temperature adjustment switch 332, the temperature of the cleaning water ejected from the nozzle unit 20 to the user's local part is adjusted. When the user operates the toilet seat temperature adjustment switch 333, the temperature of the toilet seat 400 is adjusted.

  Further, when the user operates the sterilization switch 335, the cleaning water containing silver ions flows into the cleaning water supply mechanism of the main body 200, and the sterilization operation is performed.

  Similar to the automatic opening / closing switch 331, the toilet flushing switch 336 is constituted by a knob. When the user operates the knob of the toilet flushing switch 336, the operation of the toilet pre-washing and the toilet rear washing by the toilet nozzle 40 is set.

  In other words, when the knob of the toilet flushing switch 336 is in the ON position, flush water is ejected from the toilet nozzle 40 to a wide area inside the toilet 700 according to the user entering the toilet room. In addition, washing water is jetted from the toilet nozzle 40 to the back side of the inner surface of the toilet 700 while the user is seated on the toilet seat 400.

<3> Configuration of Water Supply System and Control System in Main Body FIG. 3 is a schematic diagram showing the configuration of the main body 200. As shown in FIG. 3, the main body 200 includes a branch faucet 2, a strainer 4, a check valve 5, a constant flow valve 6, a water stop solenoid valve 7, a flow sensor 8, a heat exchanger 9, a pump 11, and a buffer tank. 12, human body switching valve 13, nozzle unit 20, vacuum breakers 31, 61, toilet nozzle 40, toilet nozzle motor 40m, lamp 50, and control unit 90.

  The nozzle unit 20 includes a buttocks nozzle 21, a bidet nozzle 22, and a nozzle cleaning nozzle 23, and the human switching valve 13 includes a switching valve motor 13m.

  As shown in FIG. 3, a branch tap 2 is inserted in the water pipe 1. A strainer 4, a check valve 5, a constant flow valve 6, a water stop electromagnetic valve 7, and a flow sensor 8 are inserted in order in the pipe 3 connected between the branch faucet 2 and the heat exchanger 9. A pump 11 and a buffer tank 12 are inserted in a pipe 10 connected between the heat exchanger 9 and the human body switching valve 13.

  A butt nozzle 21, a bidet nozzle 22 and a nozzle cleaning nozzle 23 are respectively connected to a plurality of ports of the switching valve 13 for human body.

  The vacuum breaker 31 is connected to a branch pipe 30 extending from the pipe 3 between the water stop solenoid valve 7 and the flow rate sensor 8, and is disposed at a position above the washing water outlet of the heat exchanger 9 and the toilet nozzle 40. The One end of a branch pipe 32 is connected to the vacuum breaker 31. The branch pipe 30 and the branch pipe 32 are connected via a vacuum breaker 31. The toilet nozzle 40 is connected to the other end of the branch pipe 32. The toilet nozzle motor 40 m and the lamp 50 are attached in the vicinity of the toilet nozzle 40. The vacuum breaker 61 is provided in the buffer tank 12 and is disposed at a position above the heat exchanger 9. The vacuum breaker 61 and the buffer tank 12 are integrally formed. Therefore, the buffer tank 12 is also arranged at a position above the heat exchanger 9.

  Next, the flow of cleaning water in the main body 200 and the control of each component of the main body 200 by the controller 90 will be described.

  The purified water flowing through the water pipe 1 is supplied to the strainer 4 by the branch tap 2 as washing water. Thereby, the dust, impurities, etc. contained in the washing water are removed by the strainer 4.

  Next, the check valve 5 prevents the backflow of the wash water in the pipe 3, and the constant flow valve 6 keeps the flow rate of the wash water flowing in the pipe 3 constant. Then, the supply state of the washing water to the heat exchanger 9 is switched by the water stop solenoid valve 7. The operation of the water stop solenoid valve 7 is controlled by the control unit 90.

  In the pipe 3, the flow sensor 8 measures the flow rate of the cleaning water flowing in the pipe 3 and gives the measured flow value to the control unit 90. The heat exchanger 9 heats the washing water supplied through the pipe 3 to a predetermined temperature. The operation of the heat exchanger 9 is controlled by the control unit 90 based on the measured flow rate value measured by the flow sensor 8.

  Subsequently, the wash water heated by the heat exchanger 9 is pumped by the pump 11 through the buffer tank 12 to the human body switching valve 13. The operation of the pump 11 is controlled by the control unit 90.

  The buffer tank 12 acts as a temperature buffer for heated washing water. Thereby, generation | occurrence | production of the temperature nonuniformity of the wash water pumped by the switching valve 13 for human bodies is suppressed. The total capacity of the heat exchanger 9 and the buffer tank 12 is preferably 15 cc to 30 cc, and more preferably 20 cc to 25 cc.

In the human body switching valve 13, the cleaning water pumped from the pump 11 is supplied to any one of the buttocks nozzle 21, the bidet nozzle 22, and the nozzle cleaning nozzle 23 by operating the switching valve motor 13 m. As a result, cleaning water is ejected from any one of the buttocks nozzle 21, the bidet nozzle 22, and the nozzle cleaning nozzle 23. The operation of the switching valve motor 13m is controlled by the control unit 90.

  The buttocks nozzle 21 and the bidet nozzle 22 are used for cleaning the user's local area. The nozzle cleaning nozzle 23 is used for cleaning portions of the buttocks nozzle 21 and the bidet nozzle 22 that protrude into the toilet bowl 700.

  Of the wash water supplied from the water stop solenoid valve 7 to the heat exchanger 9, excess wash water that is not used in the nozzle portion 20 is discarded as waste water through the branch pipe 30, the branch pipe 32, and the toilet nozzle 40. 1). That is, the branch pipe 30 and the branch pipe 32 function as a waste water circuit. Details of the toilet nozzle 40 will be described later.

  In this example, a vacuum breaker 31 is provided between the heat exchanger 9 and the toilet nozzle 40, and a vacuum breaker 61 is provided between the heat exchanger 9 and the nozzle portion 20. Thereby, the wash water in the heat exchanger 9 is prevented from flowing out through the branch pipe 30, the branch pipe 32 and the toilet nozzle 40 and from the outside through the pipe 10 and the nozzle unit 20. . As a result, the emptying of the heat exchanger 9 is prevented.

  Further, the vacuum breaker 31 prevents backflow of sewage and the like from the toilet nozzle 40 side, and the vacuum breaker 61 prevents backflow of sewage and the like from the nozzle portion 20 side.

  In addition, since the buffer tank 12 and the vacuum breaker 61 are integrally provided, the main body 200 can be reduced in size. Further, since the cold water in the buffer tank 12 is discharged by the vacuum breaker 61, it is possible to prevent the cold water from being ejected from the butt nozzle 21 during butt washing.

<4> Configuration and Operation of Toilet Nozzle (4-a) Description of Toilet Nozzle Next, the toilet nozzle 40 will be described. FIG. 4 is a longitudinal sectional view of the sanitary washing device 100. As shown in FIG. 4, the toilet nozzle 40 is disposed at a position near the nozzle portion 20 at the lower portion of the main body portion 200, and the tip portion thereof is located inside the toilet bowl 700. In the vicinity of the toilet nozzle 40, a lamp 50 made of an LED (light emitting diode) or the like is provided.

  In the following, as shown in FIG. 4, each part will be described with the main body 200 side of the sanitary washing device 100 as the rear and the front end side of the toilet seat 400 as the front.

  A toilet nozzle cover 40K is provided so as to cover the front side of the toilet nozzle 40 and the lamp 50 provided in the vicinity thereof. The toilet nozzle cover 40K is formed of a transparent resin. Thereby, when the lamp 50 emits light, the light is irradiated into the toilet 700 through the toilet nozzle cover 40K.

  FIG. 5 is an enlarged cross-sectional view for explaining the toilet nozzle 40 of FIG. 4 and the surrounding structure. As shown in FIG. 5, the toilet nozzle 40 has a structure in which a rod-like jet forming member 42 is inserted into the distal end portion of a cylindrical toilet nozzle main body 41. Inside the toilet nozzle main body 41, a gap is formed between the inner surface of the toilet nozzle main body 41 and the outer peripheral surface of the jet forming member 42. A connecting pipe 44 that constitutes a part of the branch pipe 32 of FIG. 3 is connected to the rear end of the toilet nozzle body 41.

As a result, when wash water (waste water) is supplied from the connecting pipe 44 (branch pipe 32) to the toilet nozzle body 41, the wash water flows into the inner surface of the toilet nozzle body 41 and the outer peripheral surface of the jet forming member 42. Is ejected from the front end portion of the toilet nozzle 40 through the gap therebetween.

  One end of the rotating piece 43 is fixed to the rear end portion of the toilet nozzle main body 41. The other end of the rotating piece 43 is connected to a toilet nozzle motor 40m fixed to a main body lower casing 200A described later. Thereby, if the toilet nozzle motor 40m operates, the front-end | tip part of the toilet nozzle main-body part 41 will rotate.

  Here, when the toilet nozzle 40 is on standby, that is, when the user has not entered the toilet room, the tip of the toilet nozzle 40 is positioned so as to be close to the inner surface of the toilet nozzle cover 40K. Hereinafter, the position of the toilet nozzle 40 is referred to as a storage position. The position where the toilet nozzle 40 moves downward and performs toilet cleaning is hereinafter referred to as a toilet cleaning position.

  Further, a torsion spring 40S is mounted on the rotating piece 43, and the torsion spring 40S is fixed by a fixing portion 43a provided on the rotating piece 43 and a fixing groove 40Kb provided on the toilet nozzle cover 40K, and the toilet nozzle main body 41 is in the storage position. Is biased in the direction. The play of the drive system exists between the toilet nozzle motor 40m and the rotating piece 43, and when the toilet nozzle motor 40m uses a reduction gear, there is a backlash of the reduction gear. Even if the portion 41 is moved to the storage position, the toilet nozzle main body 41 returns to the toilet cleaning position direction by the amount of play without stopping at the storage position. If the toilet nozzle body 41 is biased toward the storage position by the torsion spring, this play is absorbed by the torsion spring, so that the nozzle body 41 can be fixed at a predetermined storage position.

  The torque of the torsion spring 40S is set to be equal to or greater than the resistance force when the driving means such as the toilet nozzle motor 40m and the reduction gear are not movable and the tension generated by the pipe 44 connected to the toilet nozzle body 41. The toilet nozzle main body 41 can be easily rotated to the storage position side.

  In addition, the toilet nozzle 40 also serves as an outlet for waste water. When a failure occurs in the toilet nozzle motor 40m at the toilet cleaning position where the toilet nozzle 40 performs toilet cleaning, a jet of toilet cleaning is always in the user's stool, resulting in inconvenience in use. Become. Even in such a state, the toilet nozzle body 41 is rotated to the storage position by the urging force of the torsion spring 40S, so even if the washing water is ejected, the jet does not scatter forward, and the user is seated. Thus, a sanitary washing device can be used.

  In addition, even if the toilet nozzle 40 cannot be controlled and the toilet nozzle 40 stops at an intermediate position and a jet flows out, the jet may jump out of the toilet and leak into the floor. Even if it stops at any position, it is necessary to configure so that at least the toilet surface does not pop out.

  As shown in FIG. 5, the toilet nozzle cover 40 </ b> K is ejected to the outside of the toilet surface in the process in which the tip of the toilet nozzle main body 41 rotates and the jet jetted moves from the toilet cleaning position to the storage position. A side shield 40Ka is provided on the side surface of the nozzle cover 40K so as not to be present. Thus, no matter where the toilet nozzle main body 41 stops, the jet does not jump out of the toilet and water leakage can be prevented.

  When the nozzle cover 40K covers the toilet nozzle 40 and an external force acts on the toilet nozzle 40, the toilet nozzle 40 moves inside the shielding portion of the nozzle cover 40K. Will not work.

  In this state, when the entrance detection sensor 600 in FIG. 1 detects that the user has entered the toilet room, the toilet nozzle motor 40m operates. Thereby, the front-end | tip part of the toilet nozzle 40 rotates in the direction shown by the arrow A of FIG. And the above-mentioned toilet pre-washing is started.

  FIG. 6 is a longitudinal section of the sanitary washing device 100 at the time of toilet pre-washing, and FIG. 7 is an enlarged sectional view for explaining the toilet nozzle 40 in the state of FIG. 6 and the surrounding structure.

  First, as shown in FIGS. 6 and 7, when the user enters the toilet room and the front end of the toilet nozzle 40 is rotated, the front end moves below the toilet nozzle cover 40K, and the toilet bowl is moved. It is positioned at the toilet flushing position so as to be exposed to the internal space of 700.

  In this state, cleaning water is supplied from the connecting pipe 44 to the toilet nozzle body 41. Thereby, washing water is ejected from the tip of the toilet nozzle 40. The wash water ejected from the toilet nozzle 40 is ejected radially in a direction substantially perpendicular to the axis of the toilet nozzle 40.

  As a result, as shown in FIG. 6, the wash water is ejected over a wide area on the inner surface centering on the waste outlet 700 </ b> D of the toilet 700. As a result, the inner surface of the toilet 700 that is dry when the user enters the toilet room is wetted by the cleaning water.

  At this time, the lamp 50 emits light, so that the user can visually recognize that the toilet pre-cleaning is being performed.

  As described above, the wetness of the inner surface of the toilet bowl 700 before use prevents the dirt from adhering to the inner surface of the toilet bowl 700.

  As will be described later, the toilet pre-cleaning operation is stopped when a predetermined time elapses, the user is seated on the toilet seat 400, or the user operates the remote control device 300.

  At the end of the toilet pre-washing, the toilet nozzle motor 40m operates again. Thereby, the front-end | tip part of the toilet nozzle 40 moves inside the toilet nozzle cover 40K again, and adjoins the inner surface of the toilet nozzle cover 40K. That is, after the toilet bowl pre-washing, the toilet nozzle 40 moves to the storage position again. At this time, the wash water is continuously ejected from the tip of the toilet nozzle 40. Thereby, toilet back washing | cleaning is started.

  At the time of toilet rear cleaning, as shown by arrows B and C in FIG. 4, the wash water ejected from the toilet nozzle 40 to the inner surface on the rear side of the toilet 700 collides with the inner surface and flows down in the toilet 700.

  This reliably prevents filth from adhering to the inner surface on the rear side of the toilet 700 when the user uses the toilet apparatus 1000.

  At this time, the washing water sprayed from the toilet nozzle 40 to the inner surface of the toilet nozzle cover 40K collides with the inner surface of the toilet nozzle cover 40K and rebounds to the tip of the toilet nozzle 40. Thereby, the front-end | tip part of the toilet nozzle 40 is wash | cleaned, and the contamination of the front-end | tip part of the toilet nozzle 40 is prevented.

  Thereafter, for example, when the user stands up from the toilet seat 400, the toilet rear cleaning is stopped. That is, the ejection of the washing water from the toilet nozzle 40 is stopped.

(4-b) Details of Structure of Toilet Nozzle Here, details of the structure of the tip of the toilet nozzle 40 will be described. FIG. 8 is a cross-sectional view showing the structure of the tip of the toilet nozzle 40 of FIG. FIG. 8A shows a longitudinal sectional view at the tip of the toilet nozzle 40, and FIG. 8B shows a sectional view taken along line C14-C14 of FIG. 8A.

  As shown in FIG. 8A, the jet forming member 42 is inserted into the inside of the front end opening 41h of the toilet nozzle main body 41. The jet forming member 42 has an insertion shaft portion 42a. As shown in FIG. 8B, the insertion shaft portion 42a is formed with three blade members 42b extending radially outward from the shaft center. A large-diameter portion 42c, an enlarged portion 42d, and a flange portion 42e are formed from the blade member 42b toward the tip of the jet forming member 42.

  The diameter of the large diameter portion 42c is larger than the diameter of the insertion shaft portion 42a. Further, the enlarged portion 42d gradually becomes larger in diameter toward the tip of the jet forming member 42, and the diameter of the tip of the jet forming member 42 is larger than the diameter of the tip opening 41h. In addition, the outer diameter of the flange portion 42 e is larger than the outer diameter of the toilet nozzle main body portion 41.

  A step portion 41 d is formed on the inner surface of the toilet nozzle body 41. When the jet forming member 42 is inserted into the toilet nozzle main body 41, the stepped portion 41d and the blade member 42b of the jet forming member 42 come into contact with each other. At this time, the blade member 42 b acts as a spacer between the jet forming member 42 and the toilet nozzle main body 41. Thereby, the jet flow forming member 42 is positioned inside the toilet nozzle main body 41.

  In this state, the large-diameter portion 42 c of the jet flow forming member 42 protrudes from the distal end opening 41 h of the toilet nozzle main body 41, and the enlarged portion 42 d and the flange portion 42 e are located outside the toilet nozzle main body 41.

  The outer diameters of the insertion shaft portion 42 a and the large diameter portion 42 c are smaller than the inner diameter of the toilet nozzle main body 41. Therefore, a gap is formed between the inner surface of the toilet nozzle main body 41 and the outer peripheral surface of the jet forming member 42 as described above. This gap becomes the washing water flow path 41s.

  When the cleaning water is supplied from the connection pipe 44 in FIG. 5, the cleaning water is ejected from the tip opening 41h through the flow path 41s. At this time, the washing water is ejected to the outside along the outer peripheral surfaces of the large diameter portion 42c and the enlarged portion 42d. That is, the wash water is ejected radially in a direction substantially perpendicular to the axis of the toilet nozzle 40.

(4-c) Jet water flow velocity at the time of toilet pre-washing FIG. 9 is a diagram showing the relationship between the jet flow velocity of the wash water ejected from the toilet nozzle 40 of FIG. 4 and the spread width.

  First, the ejection flow velocity and the spreading width will be described. FIG. 9A shows a diagram for explaining the definitions of the ejection flow velocity and the spreading width.

  FIG. 9A shows a state in which the washing water is ejected from the toilet nozzle 40 arranged so that the axis is parallel to the vertical direction.

  Here, the ejection flow rate refers to the flow rate of the washing water ejected in the horizontal direction from the tip of the toilet nozzle 40 as indicated by the arrow WV. Further, the spread width refers to the outer diameter of the region where the wash water is supplied 100 mm below the toilet nozzle 40 as indicated by an arrow WW.

FIG. 9B shows an experimental result in the case where washing water is ejected from the toilet nozzle 40. In FIG. 9B, the vertical axis represents the cleaning water spreading width WW, the horizontal axis represents the cleaning water ejection flow rate, and the solid line represents the relationship between the spreading width WW and the ejection flow velocity.

  As shown in FIG. 9B, when the washing water ejection flow rate is greater than 2 m / s, the spreading width is greater than 200 mm. In this case, since wash water can be supplied to a sufficiently wide area on the inner surface of the toilet bowl 700, it is possible to sufficiently prevent filth from adhering to the inner surface of the toilet bowl 700.

  Moreover, when the jetting flow velocity of washing water is made smaller than 10 m / s, the spreading width becomes smaller than 1000 mm. In this case, it is possible to prevent the washing water from splashing outside the toilet bowl 700. Moreover, it is possible to prevent the washing water ejected from the toilet nozzle 40 from greatly rebounding on the inner surface of the toilet bowl 700 by making the ejection flow rate of the washing water smaller than 10 m / s. Thereby, it is possible to sufficiently prevent the washing water from splashing out of the toilet bowl 700.

  Therefore, by setting the ejection speed of the washing water in the range of 2 m / s to 10 m / s, it is possible to prevent the washing water from splashing outside the toilet 700 and prevent the filth from adhering to the toilet 700. It can be sufficiently prevented. In addition, it is more preferable that the ejection speed of the washing water is set in the range of 4 m / s to 8 m / s. In this case, it is possible to reliably prevent filth from adhering to the toilet bowl 700 while reliably preventing the wash water from splashing outside the toilet bowl 700.

(4-d) Operation timing and control flow of toilet pre-washing In this example, when the user enters the toilet room, the toilet pre-washing is started under the control of the control unit 90. In addition, when the user uses the toilet apparatus 1000, toilet rear cleaning is performed under the control of the control unit 90. That is, when the user is seated on the toilet seat 400 (FIG. 1), scattering of washing water from the toilet nozzle 40 (FIG. 1) to the front side is prevented. This prevents the cleaning water from adhering to the user.

  The control unit 90 performs a transition from toilet bowl pre-washing to toilet back washing based on the passage of a predetermined time, the user sitting on the toilet seat 400, or the operation of the remote control device 300 by the user.

  Here, the predetermined time is determined in advance based on an average time from when the user enters the toilet room until the user sits on the toilet seat 400. In order to determine the predetermined time, the present inventors investigated the time from when the user enters the toilet room until he / she sits on the toilet seat 400 (hereinafter referred to as “entrance sitting time”). This survey was conducted by using a toilet room for a predetermined number of users, measuring the entrance / seating time of each user, and calculating the cumulative percentage for each entrance / seating time.

  FIG. 10 is a diagram showing the results of investigation into the room sitting time. In FIG. 10, the horizontal axis indicates the room sitting time, and the vertical axis indicates the cumulative percentage of users.

  As shown in FIG. 10, according to this survey, it is clear that many users (over 90% of users) are seated on the toilet seat 400 after about 6 seconds after entering the toilet room. became. Therefore, in this example, the predetermined time is set to 6 seconds. In this case, the transition from toilet bowl pre-cleaning to toilet rear cleaning can be performed immediately before the user is seated on the toilet seat 400. Thus, the inner surface of the toilet 700 can be sufficiently wetted before the user is seated, and the washing water ejected from the toilet nozzle 40 can be reliably prevented from adhering to the user.

  Next, the control flow of the toilet bowl cleaning process (toilet bowl pre-washing and toilet bowl rear washing) by the control unit 90 (FIG. 3) will be described.

  FIG. 11 is a diagram illustrating a control flow of toilet bowl cleaning processing by the control unit 90.

  As shown in FIG. 11, the control unit 90 first holds the toilet nozzle 40 in the storage position (position shown in FIGS. 4 and 5) by controlling the toilet nozzle motor 40m (FIG. 3) (step S1). ).

  Next, the control unit 90 determines whether or not the user has entered the toilet room based on the output signal of the entry detection sensor 600 (FIG. 1) (step S2). When the user enters the toilet room, the control unit 90 controls the toilet nozzle motor 40m to move the toilet nozzle 40 to the toilet cleaning position (the position shown in FIGS. 6 and 7) (step S3).

  Next, the control unit 90 controls the water stop solenoid valve 7 (FIG. 3), the switching valve motor 13m (FIG. 3), and the like to eject the wash water from the toilet nozzle 40 and turn on the lamp 50 (step) S4).

  Next, the control unit 90 determines whether or not a predetermined time (for example, 6 seconds) has elapsed since the user entered the toilet room (step S5). If the predetermined time has not elapsed, the control unit 90 determines whether or not the stop switch 311 (FIG. 2) has been pressed by the user (step S6).

  When the stop switch 311 is not pressed, the control unit 90 determines whether or not the user is seated on the toilet seat 400 (FIG. 1) based on the output signal of the seating sensor 610 (FIG. 1) (step). S7). When the user is not seated on the toilet seat 400, the controller 90 returns to the process of step S5.

  When it is determined in step S5 that the predetermined time has elapsed, the control unit 90 turns off the lamp 50 (step S8). Next, the controller 90 moves the toilet nozzle 40 to the storage position (the position shown in FIGS. 4 and 5) by controlling the toilet nozzle motor 40m (FIG. 3) (step S9).

  Next, the control unit 90 determines whether or not the user has stood up based on the output signal of the seating sensor 610 (FIG. 1) (step S10). When it is determined that the user has stood up, the control unit 90 controls the water stop solenoid valve 7 (FIG. 3) and the like to stop the ejection of the wash water from the toilet nozzle 40 (step S11). Thereby, the toilet bowl washing process by the control unit 90 ends.

  When it is determined in step S2 that the user has not entered the room, the control unit 90 waits until the user enters the room.

  If the stop switch 311 is pressed by the user in step S6, or if the user is seated on the toilet seat 400 in step S7, the control unit 90 proceeds to the process of step S8.

  When the user has not stood up in step S10, the control unit 90 waits until the user stands up.

As described above, in this example, the toilet pre-cleaning is terminated when a predetermined time elapses after the user enters the toilet room. In this case, as described above, the inner surface of the toilet 700 can be sufficiently wetted before the user is seated, and the washing water ejected from the toilet nozzle 40 can be reliably prevented from adhering to the user.

  Further, when the user presses the stop switch 311 or the user sits on the toilet seat 400, the toilet pre-washing is finished. Therefore, even when the user is seated on the toilet seat 400 within the predetermined time, it is possible to prevent the washing water ejected from the toilet nozzle 40 from adhering to the user.

  In addition, when the user is seated on the toilet seat 400, toilet rear cleaning is performed. Thereby, it is possible to reliably prevent filth from adhering to the rear side of the inner surface of the toilet bowl 700.

  In the control flow of FIG. 11, after the toilet nozzle 40 has moved to the toilet cleaning position in step S3, the flushing water starts to be ejected in step S4, but before the toilet nozzle 40 moves to the toilet cleaning position, that is, stored. You may start ejecting washing water in the state hold | maintained in the position. In this case, the toilet nozzle 40 can be cleaned before the toilet pre-cleaning is performed. Thereby, contamination of the toilet nozzle 40 can be reliably prevented.

  In the control flow of FIG. 11, the toilet nozzle 40 is moved to the toilet cleaning position when the user's entry is confirmed in step S <b> 2, but the toilet nozzle 40 may be waited at the toilet cleaning position in advance. In this case, since the toilet pre-cleaning can be started quickly, a sufficient amount of cleaning water can be supplied to the toilet 700. Thereby, it can prevent more reliably that filth adheres to toilet bowl 700. FIG. When the toilet nozzle 40 is made to wait in advance at the toilet cleaning position, for example, after the user has finished using the toilet apparatus 1000, the toilet nozzle 40 may be moved to the toilet cleaning position when a predetermined time has elapsed. Good.

  Moreover, when flushing water is ejected from the toilet nozzle 40, the supply of flush water to the nozzle unit 20 (FIG. 3) may be stopped by controlling the switching valve 13 for human body. In this case, since a sufficient amount of wash water can be supplied to the toilet nozzle 40, the toilet bowl 700 can be sufficiently wetted with the wash water. As a result, it is possible to sufficiently prevent filth from adhering to the toilet bowl 700.

(4-e) Effect regarding toilet bowl cleaning process and toilet nozzle As described above, before the user sits on the toilet seat 400, toilet bowl pre-cleaning is performed. Thereby, since the substantially whole area of the inner surface of the toilet bowl 700 can be wetted with washing water, it is possible to prevent filth from adhering to the toilet bowl 700.

  Further, since the toilet nozzle 40K is urged by the torsion spring 40S in the direction of the storage position, the toilet nozzle 40K can be manually moved to the storage position even when the toilet nozzle 40K stops operating. It can serve as a warm water flush toilet seat.

  Further, even when the toilet nozzle 40K does not perform cleaning at a predetermined toilet cleaning position, the shielding portion 40Ka of the toilet nozzle cover 40K prevents the jet from jumping out of the toilet, so that no leakage occurs even during abnormal operation.

  Further, when the sanitary washing device 100 is attached to the toilet bowl 700 or when the sanitary washing device 100 is transported, the toilet nozzle 40 can be held in the storage position. In this case, since the toilet nozzle 40 is covered with the toilet nozzle cover 40K, damage to the toilet nozzle 40 can be prevented.

  The sanitary washing device of the present invention can be stored in the storage position without fail even if the drive means fails, and therefore can be applied to other nozzle devices having a rotation mechanism.

1 is an external perspective view showing a sanitary washing device according to an embodiment of the present invention and a toilet device provided with the same. (A) is a front view of the remote control device of FIG. 1 with the controller lid closed, (b) is a front view of the controller lid opened. Schematic diagram showing the configuration of the main unit Vertical section of sanitary washing device The expanded sectional view for demonstrating the toilet nozzle of FIG. 4 and its surrounding structure Longitudinal cross section of sanitary washing device during toilet pre-washing The expanded sectional view for demonstrating the toilet nozzle of the state of FIG. 6, and its surrounding structure (A) is a longitudinal sectional view showing the structure of the tip of the toilet nozzle of FIG. (A) is a schematic diagram showing the spread of the wash water ejected from the toilet nozzle of FIG. 4, and (b) is a graph showing the relationship between the jet flow velocity and the spread width. Graph showing the survey results of the sitting time after the user enters the room The flowchart which shows the control flow of the toilet bowl washing process by a control part

Explanation of symbols

40 Toilet Nozzle 40K Toilet Nozzle Cover (Shielding Member)
40m toilet nozzle motor (drive means)
40S Torsion spring (biasing means)
100 Sanitary washing device 200 Main body 700 Toilet bowl

Claims (3)

A sanitary washing device that ejects wash water supplied from a supply source to a toilet having a front part and a rear part, and is freely rotatable to eject wash water radially toward the inner surface of the toilet on the rear side of the toilet A provided ejection part, a driving means for rotating the ejection part, an urging means for urging the ejection part in one direction of rotation, and a front side and both sides of the ejection part on the rear side of the toilet A shielding member provided so as to surround the side, and the ejection part is configured to prevent the splashing of the cleaning water ejected from the ejection part from being forwarded by the shielding member and the forward scattering. The urging means urges the ejection part in the direction of the storage position, and the urging means irrigates flush water at the toilet washing position. Erupted diagonally forward Sanitary washing apparatus according to claim Rukoto. 2. The biasing means according to claim 1, wherein the biasing means includes a biasing force capable of rotating the ejection portion to the storage position against a resistance force when the driving means is not movable and a tension of a pipe connected to the ejection portion. Sanitary washing device. The shape of the shielding member is set so that the washing water ejected from the ejection part does not jump out of the toilet bowl regardless of the rotation position of the ejection part. Sanitary washing device.