JP2008106502A5 - - Google Patents

Description

Sanitary washing device

  The present invention relates to a sanitary washing apparatus for washing a human body and a washing method for the washing nozzle.

  A sanitary washing apparatus that hygienically cleans a local part of a human body cleans the washing water by heating it with a warming device to boil it to around 40 ° C., and ejecting warm water from the washing nozzle toward the local area.

  In this type of sanitary washing device, washing is performed by moving the washing nozzle to the vicinity of the local area of the human body and ejecting washing water at the time of washing, so that dirty water tends to adhere to the washing nozzle at the time of washing, and the tip of the nozzle is washed with washing water. Nozzle cleaning is generally performed. Such nozzle cleaning uses cleaning water for local cleaning before or after local body cleaning, and sprays the cleaning nozzle to wash away sewage and filth (see, for example, Patent Document 1).

  However, bacteria and fungi floating in the air are likely to adhere to the surface of the water film after cleaning the nozzle. With the recent increase in airtightness and heat insulation of houses, it has become an environment where these bacteria and fungi can easily grow. It can be considered that the surface of the cleaning nozzle grows after long-term use. In order to suppress the growth of bacteria and fungi on the nozzle surface, a method using a resin in which an antibacterial component is kneaded into the nozzle or the nozzle tip (see Patent Document 2) and a method of applying a chemical to nozzle cleaning are proposed. (See Patent Documents 2 and 3).

  FIG. 7 shows the sanitary washing apparatus described in the document 2. In the figure, reference numeral 1 denotes a cleaning nozzle, which has a cleaning cap 3 for performing nozzle cleaning by splashing the cleaning water from the ejection hole 2 at the ejection hole 2 and the position where the cleaning nozzle 1 is stored. A chemical tank 4 is supplied to the chemical supply path 6 by the chemical injection pump 5, mixed with the cleaning water that has passed through the original electromagnetic valve 7 and the cleaning water supply path 8, flows into the cleaning nozzle 1, and is discharged from the ejection hole 2. The washing nozzle is washed with the chemical liquid by ejecting.

In Patent Document 2, hypochlorous acid, which is produced by electrolyzing water as a chemical solution, is applied to nozzle cleaning. In Patent Document 3, elution is carried out in washing water as a disinfecting component. It is disclosed that the nozzle is washed and sterilized with silver ions.
Japanese Utility Model Publication No. 61-155478 Japanese Patent No. 3487447 JP 2001-279780 A

However, in the conventional sanitary washing apparatus, the resin material is an environment in which organic substances that become nutrients such as bacteria and fungi are likely to adhere, and the bacteria and fungi are likely to grow on the basis of the attached organic matter, There is a problem that even if the growth of bacteria and fungi can be suppressed with an antibacterial component, the antibacterial effect cannot be exerted on a biofilm-like material over time. Moreover, since the surface energy of the resin material is small, there is a problem that the dirt once adhered is firmly bonded to the resin surface and is not easily washed away with washing water.
Also, in the method using chemical solution, it is necessary to supplement the chemical solution when the chemical solution in the chemical solution tank is consumed, and it is troublesome to replenish the chemical solution, and if the user forgets to replenish the chemical solution, the nozzle is sanitized. There was a fear that it could not be kept. In addition, since the consumption state of the chemical solution is not known to the user in a normal use state, there is a problem that the configuration of the chemical solution replacement and the compensation time notification is necessary, leading to complicated equipment and high cost. there were.

  On the other hand, in the configuration in which water is electrolyzed to generate hypochlorous acid, it is not necessary to replenish the chemical solution. However, since chlorine is generated by electrolysis, it is necessary to take measures against corrosion and odor of equipment due to chlorine. There was a problem that it was further complicated and led to an increase in the size of the apparatus. In addition, even in nozzle cleaning that contains silver ions, which are known as inorganic antibacterial agents that exhibit excellent antibacterial properties at low concentrations, in washing water, long-term cleaning is required when silver ions are used at low concentrations. In order to perform cleaning in time, there was a problem that a high concentration of silver ions was required. Since silver is an expensive noble metal, it is uneconomical and costly to elute the expensive metal and discharge it each time to clean the nozzle.

  A technical problem to be solved in the present invention is to provide a sanitary washing apparatus that can effectively perform nozzle cleaning without using a chemical and can be used more hygienically.

In order to solve the above-described problems, the present invention cleans the human body cleaning nozzle, a plurality of human body cleaning nozzles having a toilet seat, a nozzle exterior member made of metal whose surface is smoothed, and cleaning the human body Cleaning means for jetting cleaning water, a nozzle cover that covers at least a part of the human body cleaning nozzle and has a jet opening for jetting cleaning water to the human body cleaning nozzle, and a nozzle storage section that stores the human body cleaning nozzle Drive means for driving the human body cleaning nozzle forward and backward from the storage section to the human body cleaning position, and a cleaning water flow path is formed between the human body cleaning nozzle, the nozzle cover and the nozzle storage section, and the cleaning means When cleaning the human body cleaning nozzle according to the above, the plurality of human body cleaning nozzles are alternately driven forward and backward.

Since multiple human body cleaning nozzles are alternately driven forward and backward to perform cleaning, it becomes possible to wash away all the organic matter and splash water containing the latest on the part protruding from the nozzle cover of the human body cleaning nozzle from all around the human body. The entire cleaning nozzle can be cleaned.

The sanitary washing device of the present invention can keep the human body washing nozzle clean by driving a plurality of human body washing nozzles alternately and forward and backward, and also does not require replenishment of chemicals. It is possible to provide a sanitary washing device that can be used in a practical manner.

The sanitary washing device according to the first invention includes a toilet seat, a plurality of human body washing nozzles having a nozzle exterior member made of metal whose surface is smoothed, and washing the human body, and washing for washing the human body washing nozzle Cleaning means for jetting water, a nozzle cover that covers at least a part of the human body cleaning nozzle, and has a jet opening for jetting cleaning water to the human body cleaning nozzle, and a nozzle storage section that stores the human body cleaning nozzle; Drive means for driving the human body cleaning nozzle forward and backward from the storage portion to the human body cleaning position, a cleaning water flow path is formed between the human body cleaning nozzle, the nozzle cover, and the nozzle storage portion, and the cleaning means When cleaning the human body cleaning nozzle
Is characterized in that the plurality of human body cleaning nozzles are alternately driven forward and backward.

By this structure, the metal of the nozzle exterior member is surface-smoothed so that it is possible to suppress adhesion of bacteria and fungi themselves, and adhesion of organic substances that serve as nutrients. Bacteria and fungi can be prevented from breeding, and metal materials generally have a large surface energy, and since the surface is smoothed, attached dirt is easy to peel off, and chemicals can be used. Without washing, it is possible to wash away dirt, bacteria, and fungi attached to the organic substance only by the physical force of the water flow ejected from the cleaning means, and as a result, it is possible to keep the human body cleaning nozzle clean at all times. In addition, it is possible to obtain a sanitary washing apparatus that can be used in a sanitary manner with less economic burden and effort. In addition, since multiple human body cleaning nozzles are alternately driven forward and backward to perform cleaning, it becomes possible to wash away all the organic matter and splash water containing the latest on the part protruding from the nozzle cover of the human body cleaning nozzle. The whole body cleaning nozzle can be cleaned.

The sanitary washing device according to the second invention comprises a seating sensor for detecting that a user is seated on the toilet seat,
When the seating sensor detects that the user has stood up from the toilet seat, the cleaning means cleans the plurality of human body cleaning nozzles.

With this configuration, it is possible to reliably perform careful cleaning without being restricted in time during nozzle cleaning.

In the sanitary washing apparatus according to the third invention, washing water is ejected from the washing means at predetermined time intervals to automatically wash the human body washing nozzle.

With this configuration, even when the toilet seat is not used for a long time or for a long time, the nozzle cleaning operation is performed, and it can always be kept clean.

In the sanitary washing apparatus according to the fourth aspect of the invention, the time interval of washing of the human body washing nozzle by the washing means varies depending on the room temperature.

  With this configuration, it is possible to reliably suppress recent breeding according to the recent breeding speed that varies depending on the room temperature.

  According to a fifth aspect of the present invention, the sanitary washing apparatus uses washing means that is washed with washing water by the washing means for each human washing nozzle used after the human washing with the human washing nozzle, and is performed after the user stands up with the seating sensor. At the time of cleaning, cleaning is performed by increasing the flow rate of cleaning water.

  With this configuration, cleaning can be effectively performed by the physical momentum of water.

  The sanitary washing device according to the sixth aspect of the invention further comprises a heating means for heating the washing water for washing the human body washing nozzle.

  With this configuration, the cleaning effect can be further enhanced by heating the cleaning water ejected from the cleaning unit with the heating unit.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each embodiment, the same reference numerals are given to portions performing the same form and the same operation, and the detailed description is also treated as the same. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 shows an appearance of a sanitary washing device according to Embodiment 1 of the present invention. In FIG. 1, a warm water washing toilet seat 10 as a sanitary washing device is installed on a toilet bowl 11, and a main body 12 of the warm water washing toilet seat 10, The toilet lid 13, the toilet seat 14 for the user to sit on, etc., and a water supply pipe (not shown) for receiving the supply of washing water from the water supply and an electric cable for receiving power supply from the wall outlet 15 is provided. The warm water flush toilet 10 has a butt washing function for the user to wash the anus, a bidet washing function for washing the female local part after small use, a drying function for drying the human body part after washing, and when cold A room heating function for heating the toilet space is provided, and each operation is performed by a remote controller 16 (hereinafter abbreviated as a remote controller) attached to the wall surface. The toilet seat 14 is provided with a seating sensor 17 as detection means for detecting the presence of the user. The seating sensor 17 detects whether a user is seated on the toilet seat 14 using infrared rays. As a method, a method for detecting the capacitance of the toilet seat, and further, infrared rays and ultrasonic waves are used. Detecting the user's seating on the toilet seat, etc., or detecting that the user has entered or exited the toilet room, for example, detecting the presence of the user in conjunction with toilet lighting, etc. Application as a means is possible. Reference numeral 18 denotes a state in which the butt washing nozzle protrudes above the toilet 11 in order to perform the anal washing of the user. A bidet washing nozzle 21 is provided in parallel with the butt washing nozzle 18, and the human body washing nozzle is provided. It is composed.

  2 and 3 are sectional views of the human body cleaning nozzle and the cleaning means. FIG. 2 shows a cross-sectional view in a state where the human body washing nozzle is housed, and FIG. 3 shows a cross-section along A-A ′ in FIG. 2. FIG. 4 is a block diagram showing a water circuit of the warm water flush toilet seat 10 in the present embodiment.

  2 and 3, the butt washing nozzle 18 includes a butt nozzle body 19 formed of a resin material and a butt nozzle exterior member 20 formed of a metal material covering the butt nozzle body 19, and the bidet washing nozzle 21 is also made of a resin material. And a bidet nozzle exterior member 23 formed of a metal material covering the bidet nozzle body 22. The butt washing nozzle 18 and the bidet washing nozzle 21 form a butt washing water channel 24 and a bidet washing water channel 25 for jetting the buttocks washing water and the bidet washing water to the local part of the body. Wash water supply ports 26 and 27 for supplying wash water are provided at the original portion of the wash water flow path 25, and communicate with the wash water supply means via a hose (not shown). Further, a tooth-shaped rack 28 is formed on the lower surface of the buttocks nozzle body 19 according to the driving distance necessary for the buttocks cleaning except for the tip portion thereof. A tooth-shaped rack (not shown) is formed in accordance with the driving distance necessary for bidet cleaning except for the portion. Wash water that has passed through the buttocks washing water channel 24 and the bidet washing water channel 25 is ejected from the buttocks ejection hole 29 and the bidet ejection hole 30 to the local body part.

  The buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 are formed by drawing a stainless steel thin plate into a cylindrical shape. The front end surface is a closed surface, the rear end surface is an open surface, and the buttocks nozzle body 19 and the bidet nozzle body are formed from the rear end surface. The shape 22 can be inserted. The tip nozzle exterior member 20 and the bidet nozzle exterior member 23 are formed by drawing as described above, and the distal end surface is a closed surface, so that the tip that is easily splashed with water containing organic matter and bacteria when the human body part is washed is easily applied. As a result, it is possible to minimize the unevenness and joints of the portions, and to prevent the adhesion of these organic substances and bacteria, or to easily wash off these organic substances and bacteria that have adhered.

Further, the tooth-shaped rack 28 formed on the lower surfaces of the buttocks nozzle main body 19 and the bidet nozzle main body 22 is not formed at the front end thereof, and further, as shown in FIG.
Alternatively, since it is formed on the inner side of the outer peripheral surface of the cylinder of the bidet nozzle exterior member 23, if organic substances and bacteria attached to the upper surface of the wetting nozzle exterior member 20 or the bidet nozzle exterior member 23 are washed away with washing water, Even if it wraps around, it is considered that it is difficult to adhere to this tooth-shaped rack 28 portion.

  Further, the surface of the stainless steel plate forming the butt nozzle exterior member 20 and the bidet nozzle exterior member 23 is subjected to a drawing process and then subjected to a smooth process by a buffing process or an electrolytic polishing process. The surfaces of the stainless steel plates forming the bottom nozzle exterior member 20 and the bidet nozzle exterior member 23 that have been finished are further smoothed so that the surface roughness is 1 μm or less.

  Drawing is extremely effective as a means of processing metal steel plates into a seamless cylindrical shape, but depending on the material and drawing shape of the metal steel plate, scratches may occur or micro cracks may occur. By applying a smoothing process such as a buffing process or an electropolishing process, it becomes possible to further prevent the organic matter and bacteria contained in the splashed water from adhering or to easily wash out the attached organic matter and bacteria. In addition, buffing and electropolishing can be used to smooth the surface roughness of the metal to about 1 μm, and the metal surface smoothed to the surface roughness of about 1 μm can be obtained simply by applying water to the attached dirt. There are also documents that clearly show that it can be washed away, and it is needless to say that this is a very effective means for maintaining the hygiene of the nozzle, particularly for cleaning sensitive parts of the human body.

  The stainless steel plate forming the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 is particularly effective when SUS304, SUS316L or the like having a small surface charge density is used. Since adherence of organic matter and bacteria group itself serving as nutrients can be suppressed, the propagation of bacteria in the buttocks washing nozzle 18 and the bidet washing nozzle 21 can be suppressed, and these can be kept clean.

  Furthermore, if a surface modification treatment such as nitric acid treatment or ozone treatment is performed on the stainless steel plate forming the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23, the surface charge density can be reduced to the negative side. By performing such a surface modification treatment, it becomes possible to reduce the surface charge density of the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 to the limit, resulting in positively charged bacterial groups, fungi, etc. Adherence of organic matter and bacteria to the human body can be suppressed, and dirt can be prevented from adhering to the human body washing nozzle, so that it can always be kept hygienic.

  If the human body washing nozzle can be kept hygienic in this way, it is possible not only to eliminate the sense of anxiety that comes from the user's cleanliness, but also hygienically carry out local washing of women who need special consideration. It becomes possible. Further, when the butt nozzle exterior member 20 and the bidet nozzle exterior member 23 are formed of a stainless steel plate and subjected to a smoothing process such as buffing or electrolytic polishing, the glossiness is further increased. The image is further enhanced, leading to a visual sense of security for the user.

  The butt washing nozzle 18 and the bidet washing nozzle 21 are housed in a nozzle housing part 31 having an opening in the lower part and molded from a resin material, and the upper parts of the butt washing nozzle 18 and the bidet washing nozzle 21 are covered with a nozzle cover 32. A nozzle cleaning water flow path 33 is formed between the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21, the nozzle cover 32, and the nozzle storage portion 31.

The nozzle cover 32 is provided with an ejection opening 34 for ejecting nozzle washing water for washing the butt washing nozzle 18 and the bidet washing nozzle 21, and a washing water flow path 35 is provided inside the nozzle cover 32, and the washing water flow A cleaning water supply port 36 for supplying cleaning water is installed at the original portion of the path 35 and communicates with the cleaning water supply means via a hose (not shown). The nozzle cleaning water ejected from the ejection opening 34 passes through the nozzle cleaning water flow path 33 formed between the buttocks cleaning nozzle 18, the bidet cleaning nozzle 21, the nozzle cover 32 and the nozzle storage portion 31, and the buttocks cleaning nozzle 18. The bidet washing nozzle 21 is washed and discharged into the toilet bowl 11.

  In addition, a nozzle shutter 37 that is rotatable up and down is provided on the upper end opening of the nozzle cover 32, and the end opening of the nozzle cover 32 is stored in a state in which the butt cleaning nozzle 18 and the bidet cleaning nozzle 21 are stored in the nozzle storage portion 31. Can be occluded. When the butt washing nozzle 18 and the bidet washing nozzle 21 advance to the washing position, the nozzle shutter 37 is opened upward by pushing the tip of the butt washing nozzle 18 and the bidet washing nozzle 21. When the cleaning nozzle 21 is stored in the storage position, the nozzle nozzle 37 rotates downward and closes due to its own weight.

  In the present embodiment, the shutter 37 is made of a resin kneaded with an antibacterial agent. However, like the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23, SUS304 or SUS316L having a small surface charge density is used. By applying a smoothing process such as buffing or electrolytic polishing, or by using a surface modification process such as nitric acid treatment or ozone treatment, the surface charge density is further reduced, resulting in a positive surface. Adhesion of organic matter and bacteria as the nutrients such as charged bacteria and fungi can be suppressed, and adhesion of dirt to the shutter 37 itself can be suppressed, so that it can always be kept hygienic. Thus, forming the shutter 37 with a glossy stainless steel plate and further increasing its gloss by a smoothing process or the like to make it difficult to become dirty is a part where the shutter 37 is in contact with the eyes of a daily user and moreover, Needless to say, it is important for giving hygiene and security to the user because it is a part that easily adheres. Further, the shutter 37 is made of SUS304 or SUS316L having a small surface charge density, and further subjected to a smoothing process such as buffing or electrolytic polishing, or a surface modification process such as nitric acid treatment or ozone treatment to reduce the surface charge density. If it is constructed using a smaller one, even if dirt is attached, the dirt can be washed away simply by rubbing lightly or by rinsing with water, and the cleaning performance is greatly improved.

  Further, a posterior nozzle driving means 38 for driving the posterior washing nozzle 18 forward and backward is installed at the lower part of the nozzle housing portion 31. The posterior nozzle driving means 38 is driven by a drive motor 39 and the rotation of the drive motor 39. Are provided with a plurality of reduction gears (not shown) such as pinion gears 40 and 41, and a rotation detection sensor 42 for detecting the rotational speed of the drive motor 39 is provided at the rear of the drive motor 39. It is installed. Although not shown in the drawing, the same bidet nozzle driving means is provided to drive the bidet cleaning nozzle 21 forward and backward.

  In FIG. 4, first, the branch flow from the water supply pipe 43 that is a water source is guided to the heating means 48 provided in the main body 12 of the hot water washing toilet seat 10 by the water supply pipe 45. On this water supply pipe 45, a check valve 44 that prevents sewage from flowing back into the water pipe 43, a constant flow valve 47 that restricts the amount of branch flow from the water pipe 43, and an electromagnetic valve 46 as water stop means. A flow rate sensor 49 for measuring the flow rate of the cleaning water is provided.

The heating means 48 is composed of a plate-shaped ceramic heater having a capacity of about 1200 W and meandering internal flow paths provided on both sides thereof, and the normal temperature washing water supplied to the inlet of the heating means 48 meanders. A so-called instantaneous type is used in which heat is received from the ceramic heater while flowing through the internal flow path and heated to an appropriate temperature until reaching the outlet of the heating means 48. Therefore, it is possible to supply hot water at an appropriate temperature as needed when necessary, and there is no need to keep the hot water warm and ready for use, so that it is an extremely energy-saving and efficient heating means. Further, if this so-called instantaneous superheating means 48 is used, hot water having an appropriate temperature can be obtained continuously. For example, even if hot water is used to wash the buttocks washing nozzle 18 and the bidet washing nozzle 21, There is no occurrence of cutting, and even if the user performs an operation such as a butt cleaning immediately after the cleaning operation of the butt cleaning nozzle 18 or the bidet cleaning nozzle 21, the hot water of an appropriate temperature is surely supplied and the usability is improved. In this embodiment, a plate-shaped ceramic heater having excellent heat density is used as the heater. However, various heater applications such as a sheathed heater, a mica heater, and a printed heater in which a resistor is provided on a plate material can be considered. Needless to say.

  Further, a switching valve 51 is connected to the downstream side via a hot water pipe 50. The switching valve 51 is connected to the inlet flow path 52, the first outlet flow path 53, and the second outlet to which the hot water pipe 50 is connected. The flow path 54 and the third outlet flow path 55 are selectively communicated by a motor 56.

  The first outlet channel 53 is connected to a cleaning water supply port 26 for supplying cleaning water to the butt cleaning nozzle 18 via a hose (not shown), and the second outlet channel 54 is connected to a bidet (not shown) via a hose. The cleaning water supply port 27 for supplying cleaning water to the cleaning nozzle 21 and the third outlet channel 55 are connected to the cleaning water supply port 36 via a hose.

  The operation and operation of the warm water cleaning toilet seat 10 configured as described above will be described.

  As for the warm water washing toilet seat 10, a user sits on the toilet seat 12 and a local washing | cleaning, a drying function, etc. are performed when each operation switch of the remote control 16 is operated.

  When the user selects the buttocks cleaning, the control means (not shown) starts the control, and the rotation of the drive motor 39 is transmitted to the pinion gears 40 and 41, thereby having the rack 28 engaged with the pinion gear 41. A force that pushes the buttocks nozzle body 19 forward acts. And a control means stops the drive motor 39, after moving the butt washing nozzle 18 to the position suitable for butt washing. At that time, the motor 56 drives the switching valve 51 to connect the inlet flow path 52 to which the hot water pipe 50 is connected and the first outlet flow path 53, and the electromagnetic valve 46 is opened. The heated warm water is supplied to the buttocks washing water flow path 24 and ejected from the buttocks ejection hole 29 to the local body part.

  When the stop of the buttocks cleaning is operated, the control means first closes the solenoid valve 46 and further rotates the drive motor 39 in the reverse direction, so that the buttocks cleaning nozzle 18 moves rearward and returns to the original storage state. At that time, the motor 56 drives the switching valve 51 to connect the inlet flow path 52 to which the hot water pipe 50 is connected and the third outlet flow path 55, and further opens the electromagnetic valve 46, so that the washing water is supplied. The cleaning water is supplied to the cleaning water supply port 36, and as a result, the cleaning water is ejected vigorously from the ejection opening 34 through the cleaning water flow path 33, and the butt cleaning nozzle 18, the bidet cleaning nozzle 21, the nozzle cover 32, and the nozzle storage portion 31. The surfaces of the buttocks washing nozzle 18 and the bidet washing nozzle 21 are washed while passing through the nozzle washing water flow path 33 formed between them and discharged into the toilet bowl 11.

Here, after the butt cleaning, the configuration has been described in which the nozzle cleaning is performed after the butt cleaning nozzle 18 returns to the original storage state. However, at the timing when the user instructs the stop of the butt cleaning, the solenoid valve 46 is It is also conceivable that the motor 56 drives the switching valve 51 and keeps the inlet flow path 52 connected to the hot water pipe 50 and the third outlet flow path 55 in a closed state for a moment. In this way, the washing water is supplied to the washing water supply port 36 while the buttocks washing nozzle 18 is projected, and as a result, the washing water is ejected vigorously from the ejection opening 34 through the washing water channel 33, While passing through the nozzle cleaning water flow path 33 formed between the cleaning nozzle 18 and the bidet cleaning nozzle 21, the nozzle cover 32 and the nozzle storage portion 31, the rear end surface of the buttocks cleaning nozzle 18 and the tip of the bidet cleaning nozzle 21. Wash the surface and toilet 11
In this state, if the drive motor 39 is rotated in the reverse direction and the butt washing nozzle 18 is shifted to the storing operation, the butt washing nozzle 18 can be washed as a whole. On the other hand, in the case of the previous example, it is particularly easy for dirt to adhere, and it is possible to carefully clean the tip portion that the user cares about. Each has advantages and disadvantages, and it is desirable to determine specific specifications depending on the nozzle configuration and time constraints. The series of operations and effects described here are the same as the operations of the bidet cleaning nozzle 21 and the effects obtained here when the bidet cleaning is performed.

  By washing the wet cleaning nozzle 18 and the bidet cleaning nozzle 21 each time the cleaning of the buttocks and the bidet cleaning is stopped, sticking of adhered dirt can be prevented, and the wet cleaning nozzle 18 and the bidet cleaning nozzle 21 are always provided. Can be kept clean. In addition, it leads to a user's sense of security that it must be washed after use. Also, for example, when the butt washing is repeated and when the butt washing and the bidet washing are continued, The bidet cleaning nozzle 21 can always be kept clean.

  Further, in the present embodiment, the cleaning of the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 performed immediately after stopping the buttocks cleaning and bidet cleaning is performed by supplying warm water from the heating means 48. The temperature of the washing water is set to a maximum of about 40 ° C. so that it is safe even if the washing water is applied to the user's buttocks while sitting down. By washing the buttocks washing nozzle 18 and the bidet washing nozzle 21 with hot water of about 40 ° C. in this way, the effect of washing off adhering dirt as a matter of course as compared with normal temperature water is increased, and further safety is ensured. The effect that it can do is also acquired. Further, in the case of the so-called instantaneous heating means 48 used in the present embodiment, when the flow of water is suddenly stopped while hot water is being supplied, the heat capacity of the heating means 48 itself or a built-in heater or the like. As a result, the temperature of the hot water remaining in the interior rises above the set temperature, which may impair the reliability of the device. If the bidet cleaning nozzle 21 is operated so as to clean, this so-called post-boiling hot water can be discharged from the heating means 48, which contributes to improvement of the reliability of the device. Incidentally, in the present embodiment, when cleaning the buttocks cleaning nozzle 18 and bidet cleaning nozzle 21, hot water is supplied by the heating means 48 for the first 1.5 seconds, and the remaining 0.5 seconds are supplied to the heating means 48. The configuration is such that the energization to the heater provided inside is stopped, and the hot water boiled later can be discharged reliably.

  It is very difficult to prevent splashing water containing organic matter and bacteria from splashing on the buttocks washing nozzle 18 and the bidet washing nozzle 21 when cleaning the human body part, and the splashing water containing organic matter and bacteria is very difficult. If they are stored in an attached state and left without being washed away, bacteria will propagate or dirt will stick to them.

  However, in the present embodiment, the bottom nozzle exterior member 20 and the bidet nozzle exterior member 23 are formed by drawing a stainless steel plate by drawing, thereby eliminating irregularities and joints, and performing a smoothing process such as buffing or electrolytic polishing. Therefore, immediately after the butt cleaning and the bidet cleaning are completed, only the cleaning of the butt cleaning nozzle 18 and the bidet cleaning nozzle 21 includes organic substances and bacteria attached to the surfaces of the butt nozzle outer member 20 and the bidet nozzle outer member 23. Most of the splashed water can be washed away, and the butt washing nozzle 18 and the bidet washing nozzle 21 can always be kept clean.

In general, bacteria first adhere to the concave and convex portions on the surface of the object and grow there to form a biofilm. By eliminating the concave portions, it is possible to reliably suppress the growth of bacteria. That is, in the present embodiment, the surface of the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 is subjected to a smoothing process such as a buffing process or an electrolytic polishing process to smooth the surface roughness to about 1 μm, and micro level unevenness is achieved. Therefore, the growth of bacteria and fungi can be surely suppressed, and as a result, the butt washing nozzle 18 and the bidet washing nozzle 21 can be kept clean for a long period of time.

  Further, when the washing water for washing the butt washing nozzle 18 and the bidet washing nozzle 21 is supplied to the washing water supply port 36, the washing water is ejected vigorously from the ejection opening 34 through the washing water channel 33. Further, the surfaces of the buttocks washing nozzle 18 and the bidet washing nozzle 21 are washed while passing through the nozzle washing water flow path 33 formed between the buttocks washing nozzle 18 and the bidet washing nozzle 21 and the nozzle cover 32 and the nozzle housing 31. Further, warm water is supplied from the heating means 48 and the washing nozzle 18 and the bidet washing nozzle 21 are washed, so that the rebound water containing the attached organic matter and bacteria can be more reliably washed away.

  Furthermore, since the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 are made of a metal having a low surface charge density, such as SUS304 or SUS316L, organic substances that become nutrients such as bacteria and fungi whose surface is positively charged The adhesion of the bacteria group itself can be suppressed, and as a result, the growth of bacteria in the butt washing nozzle 18 and the bidet washing nozzle 21 can be suppressed, and the butt washing nozzle 18 and the bidet washing nozzle 21 can be kept clean for a long period of time. .

  In the present embodiment, since the so-called instantaneous type is used as the heating means 48, even if the washing of the buttocks washing nozzle 18 and the bidet washing nozzle 21 is frequently performed with warm water, the warm water will not be stopped. It is possible to avoid that the user feels uncomfortable because the temperature of the washing water is lowered when performing butt washing or bidet washing. On the other hand, if the heating means 48 has only a low-capacity heater and is a so-called hot water storage type in which hot water heated to an appropriate temperature is stored and used, the tank is enlarged to avoid the so-called hot water shortage. It is necessary to take measures such as increasing the amount of hot water stored, washing the butt washing nozzle 18 and the bidet washing nozzle 21 directly from the water supply pipe 45 and washing with tap water, but immediately after the butt washing and bidet washing, The operation of washing the butt washing nozzle 18 and the bidet washing nozzle 21 is very effective in keeping the butt washing nozzle 18 and the bidet washing nozzle 21 clean, and so far. Compared with the resin nozzle by providing the bottom nozzle exterior member 20 and the bidet nozzle exterior member 23 that have been subjected to some processing and processing, which are described in detail. A certainty that the remarkable effect can be obtained, the bottom wash nozzle 18 and the bidet nozzle 21 is kept clean, it can give a sense of security to the user by this.

  Next, the operation when the user finishes using the warm water flush toilet seat 10 and stands up from the toilet seat will be described. When the user finishes using the warm water flush toilet seat 10 and stands up from the toilet seat, the seat sensor 17 provided on the toilet seat 14 detects that the user has stood up from the toilet seat, and the motor 56 switches the switching valve by a signal from the control means. 51 is driven, the inlet flow path 52 to which the hot water pipe 50 is connected and the third outlet flow path 55 are communicated, and the electromagnetic valve 46 is further opened. Then, the cleaning water supplied from the water supply pipe 45 is heated to an appropriate temperature by the heating means 48 and supplied to the cleaning water supply port 36. The nozzle cleaning water of the appropriate temperature supplied to the cleaning water supply port 36 is ejected vigorously from the ejection opening 34 through the cleaning water flow path 33, and the butt cleaning nozzle 18 and the bidet cleaning nozzle 21, the nozzle cover 32 and the nozzle housing. By vigorously passing through the flow path 33 of the nozzle washing water formed between the portions 31, the buttocks washing nozzle 18 and the bidet washing nozzle 21 are washed and discharged into the toilet 11. In this embodiment, this operation is continued for 5 seconds and automatically stops.

At this time, the hot water temperature supplied from the heating means 48 for cleaning the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 is set to 50 ° C., which is higher than when performing human body cleaning. This is because if the temperature of the washing water is high, the washing efficiency increases, and it is detected that the user has left the toilet seat 14, and the butt washing nozzle 18 and the bidet washing nozzle 2 are detected.
Since 1 is washed, it does not become an unsafe operation for the user. However, if the instantaneous heating means is adopted as in this embodiment, the heating capacity is insufficient in the severe winter season when the temperature of the tap water is lowered, and if the nozzle washing water is heated up to 50 ° C., Since the flow rate is insufficient, it is also effective to increase the flow rate of the nozzle cleaning water at a lower set temperature and clean the butt cleaning nozzle 18 and the bidet cleaning nozzle 21 with the physical momentum of the water.

  In addition, at this time, as described immediately after the butt cleaning and the bidet cleaning, the butt nozzle exterior member 20 and the bidet nozzle exterior member 23 are formed by drawing a stainless steel plate into a cylindrical shape, Furthermore, since fine irregularities on the surface are smoothed to a level of 1 μm with a planar roughness, even if dirt is attached, the probability of being washed away is greatly improved by repeated cleaning.

  In general, bacteria adhere to and grow on a concave portion on the surface of an object to form a biofilm as described above. Incidentally, the size of the bacteria is about 1 to several μm. If it is eliminated, the growth of the bacterial group can be reliably suppressed. In other words, buffing or electrolytic polishing is performed on the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 to reduce the surface roughness to 1 μm or less, so that bacteria can enter the recesses of the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23. It is possible to suppress adhesion and proliferation.

  The adhesion state of the bacteria group on the surface of the buttocks nozzle exterior member 20 when the buttocks washing nozzle 18 provided with the stainless steel buttocks nozzle exterior member 20 is immersed in a culture medium of bacteria and further cultured in an atmosphere of 38 ° C. The micrographs compared are shown in FIGS.

  FIG. 5 shows the surface of the buttocks nozzle exterior member 20 formed by deep drawing a stainless steel plate, and FIG. 6 shows the surface roughness of the stainless steel plate formed by deep drawing and smoothed to 1 to several μm by buffing. The surface of the processed buttocks nozzle exterior member 20 is shown. On the surface of the bottom nozzle exterior member 20 formed by the deep drawing shown in FIG. 5, irregularities of several μm to 10 μm level generated during the deep drawing are observed, and are further indicated by white circles around the irregularities. It can be seen that there are bacteria breeding in the place. On the other hand, the growth of bacterial groups cannot be observed on the surface of the buttocks nozzle exterior member 20 that has been subjected to a smoothing process with a buffing process shown in FIG. In other words, the butt nozzle nozzle member 20 is formed by deep-drawing a stainless steel plate and further smoothed to a surface roughness of 1 to several μm by buffing, thereby attaching bacteria to the butt nozzle nozzle member 20 surface. And it was confirmed that the reproduction could be suppressed. Here, the buttocks cleaning nozzle 18 and the buttocks nozzle exterior member 20 are described as examples, but the same effect can be obtained with the bidet cleaning nozzle 21 and the bidet nozzle exterior member 23 having the same configuration.

Further, in the operation after the user finishes using the warm water cleaning toilet seat 10, the control means repeatedly rotates the drive motor 39 for driving the butt cleaning nozzle 18 and the bidet cleaning nozzle 21 forward and backward, respectively, forward and backward. The driving is repeated, and the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 alternately project to a predetermined position and are stored. In FIG. 2, the predetermined position here refers to a portion that is located at the same position as the front end (right end of the drawing) of the nozzle cover 32 when the buttocks cleaning nozzle 18 protrudes for cleaning the bottom. The buttocks washing nozzle is configured to protrude until it is located at the left end of the nozzle cover 32 in the drawing. By configuring in this way, it becomes possible to wash away all the splashed water containing organic matter and bacteria that protrudes from the nozzle cover 32 and covers the so-called face portion of the buttocks washing nozzle 18, so that the buttocks washing and bidet washing can be performed. Rebound water containing organic matter and bacteria that could not be washed away by nozzle washing immediately after the cleaning can be surely washed away, and it is possible to prevent the loss of cleanliness due to the sticking of organic matter and the accompanying propagation of bacteria. Since the predetermined position is set similarly in the bidet cleaning nozzle 21, the same operation is naturally performed and the same effect can be expected.

  It is to be noted that performing the nozzle cleaning operation carefully while driving the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 is a very effective method for keeping the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 clean. When the user is using the warm water flush toilet seat 10, the user is instructed to perform bidet washing immediately after the butt washing or the repeated washing of the butt, so many time restrictions are realized. Have difficulty. However, in the present embodiment, since this operation is performed by detecting that the user has finished using the warm water cleaning toilet seat 10, there is little time restriction and surely careful nozzle cleaning is realized. it can. As a result, each time the warm water cleaning toilet seat 10 is used, the urine cleaning nozzle 18 and the bidet cleaning nozzle 21 can be reliably cleaned, and even against short-term stains such as sticking of organic matter, bacteria against the attached organic matter can be obtained. It is very effective against long-term soiling such as breeding and can maintain cleanliness.

  Further, since the user detects that the user has finished using the hot water cleaning toilet seat 10 and has stood up from the toilet seat 14, the nozzle cleaning operation is carefully performed while driving the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 forward and backward. The user who tries to leave the toilet sees it directly. This also gives a great sense of security to the user's psychology that he / she does not want to leave his own dirt for the next user. In addition, it can be seen that the same nozzle cleaning operation was performed after the previous user used, and the user's anxiety about the hygiene of the nozzle can be eliminated here.

  In the present embodiment, the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 are made of stainless steel plate by drawing to eliminate unevenness and joints, and smooth processing such as buffing and electrolytic polishing is performed. Therefore, by the nozzle cleaning operation immediately after the butt cleaning and the bidet cleaning, and the nozzle cleaning operation carefully performed while driving the butt cleaning nozzle 18 and the bidet cleaning nozzle 21 forward and backward, the buttocks nozzle exterior member 20 and the bidet nozzle exterior Most of the rebound water containing organic matter and bacteria adhering to the surface of the member 23 can be washed away, and it is possible to always keep clean. Further, the butt nozzle exterior member 20 and the bidet nozzle exterior member 23 that have been subjected to the smoothing process are very excellent in gloss, and the gloss of metal such as stainless steel has an effect of making cleanliness image, so it is washed with warm water. Immediately after using the toilet seat 10, if the nozzle cleaning is performed while driving the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 forward and backward, the user will visually check the cleanliness of the nozzle, resulting in hygiene. It leads to a great sense of security.

  It is also effective to highlight the state of cleaning the nozzle and show it to the user when performing a careful nozzle cleaning operation while driving the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 back and forth. That is, if, for example, a blue LED or the like is provided in the vicinity of the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 and this LED is caused to emit light during the nozzle cleaning operation, the properly cleaned buttocks cleaning nozzle 18 and bidet cleaning nozzle 21 can be obtained. In addition to being able to confirm clearly visually, in addition to the clean feeling of the stainless steel buttocks nozzle exterior member 20 and bidet nozzle exterior member 23 with excellent gloss, the clean image of blue light emitted from the blue LED has a synergistic effect It is also possible to bring out a sense of security for the user.

It should be noted that, in the above description, the nozzle cleaning operation is carefully performed while detecting that the user has finished using the warm water cleaning toilet seat and automatically driving the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 forward and backward. However, it is also conceivable that the user can arbitrarily select nozzle cleaning to be performed carefully. In other words, this elaborate nozzle cleaning selection switch is provided on either the remote controller 16 or the main body 12 of the warm water cleaning toilet seat 10, and the user selects and depresses this selection switch so that the user can select the warm water cleaning toilet seat 10. The same nozzle cleaning operation as that at the end of use is performed. By comprising in this way, when a user is worried about the hygiene of a nozzle, since a nozzle can be arbitrarily wash | cleaned, a user can be provided with a sense of security regarding the hygiene of a nozzle. In this case, the nozzle cleaning operation can be set to automatically stop, but can be configured to be arbitrarily stopped by the user. In this way, if the user can arbitrarily stop the nozzle cleaning operation, the nozzle cleaning operation can be continued until the user is satisfied, and the user's level of security regarding the hygiene of the nozzle is further increased. be able to.

  In addition, it is possible to detect that the user has finished using the warm water cleaning toilet seat 10 and perform a nozzle cleaning operation carefully while automatically driving the buttocks cleaning nozzle 18 and the bidet cleaning nozzle 21 forward and backward. In addition to the configuration that can be arbitrarily selected by the user, or in addition to these configurations, a configuration in which the same careful nozzle cleaning operation is automatically performed at every predetermined time interval is also possible. Specifically, regardless of the use / non-use of the warm water cleaning toilet seat 10, for example, once a day, in the middle of the night when the warm water cleaning toilet seat 10 is unlikely to be used, the butt cleaning nozzle 18 and the bidet cleaning are automatically performed. The nozzle cleaning operation is performed carefully while the nozzle 21 is driven forward and backward. With this configuration, even when the warm water cleaning toilet seat 10 is not used for a long time or a long time, the nozzle cleaning operation is performed, and the butt cleaning nozzle 18 and the bidet cleaning nozzle 21 are always kept hygienic and clean. be able to.

  This is a measure against the difficulty of washing away bacteria by gradually breeding with time and gradually forming a biofilm after a long time. In addition, even if the splash water containing organic matter and bacteria adhering to the buttocks and bidet washing can be washed away, the bacteria floating in the toilet space adhere to the buttocks washing nozzle 18 and the bidet washing nozzle 21. Therefore, it is very effective to automatically perform the nozzle cleaning operation at predetermined time intervals in terms of washing away the attached bacteria before they propagate.

  Here, the hot water washing toilet seat 10 is taken as an example at midnight when it is unlikely to be used, but there is no need to perform this operation at a fixed time of the day. The nozzle cleaning operation may be performed when time has elapsed. If the time is not limited in this way, it is not necessary for the control means to provide a special clock function, and only a timekeeping function of the microcomputer is required, so that an increase in the cost of the apparatus can be avoided. In terms of suppressing the growth of bacteria, the absolute time is not particularly important, and the nozzle cleaning operation only needs to be executed at almost predetermined intervals.

  However, since the bacterial growth rate differs between the summer when the room temperature is high and the winter season when the room temperature is low, the season is estimated based on the signals from the means for detecting the temperature and water temperature of the warm water washing toilet seat 10. It is also possible to set the interval for performing the nozzle cleaning operation to be shorter in summer and longer in winter. With such a setting, it is possible to reliably suppress the growth of bacteria in summer when the room temperature is high, and to save washing water and electricity bills used for nozzle cleaning in winter.

  In the present embodiment, as a treatment method for smoothing the surfaces of the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23, a method of eliminating irregularities by polishing the surface and scratching the projections, such as buffing or electrolytic polishing. However, it is also conceivable to use a method of filling the concave portions on the surface by plating or painting to eliminate the irregularities on the surface. Using such a method, if the surfaces of the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 are smoothed, it is possible to obtain the same operations and effects as those described so far. Since many smoothing processes can be performed, the production cost can be reduced.

In the present embodiment, the buttocks nozzle body 19 and the bidet nozzle body 22 are molded from a resin material, and the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 that are molded using a stainless steel plate as another member are covered. However, with such a configuration, it is possible to easily provide a cleaning jet suitable for a sanitary cleaning device, and it is possible to keep the butt cleaning nozzle 18 and the bidet cleaning nozzle 21 described so far clean. Become. In other words, the jet of the sanitary cleaning device cleans sensitive mucosal areas such as the anus and local areas of women, so it is required to have a high level of detergency that can wash away filth. Since the power range is narrow, there are a number of restrictions such as scattering must be suppressed as much as possible, but by using a nozzle made by resin molding, the complicated shape of the jet outlet can be easily formed, and the desired jet flow Cleanliness can be maintained by providing a configuration that is easy to obtain, and is further covered with an exterior member formed using a stainless steel plate. For example, when a jet outlet is provided directly on the buttocks exterior member 20 and a jet for cleaning the buttocks is jetted therefrom, the jet outlet shape often has to be a simple round hole in terms of processing cost. In such a configuration, it becomes very difficult to suppress the scattering of the jet.

  In this embodiment, the buttocks nozzle body 19 and the bidet nozzle body 22 and the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 are configured as separate members. However, for example, the buttocks nozzle body 19 and the bidet nozzle body 22 molded from a resin material are used. It is also conceivable to integrally form the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 formed using a stainless steel plate. Specifically, the buttocks nozzle body member 19 and the bidet nozzle body member 23 are formed by forming a stainless steel plate by drawing or the like and insert molding a resin material therein. Or a metal plating process may be applied to the buttocks nozzle body 19 and the bidet nozzle body 22 of the resin molded product. By adopting such a configuration, it is possible to obtain the same operation and effect as those described so far, but further, the posterior nozzle body 19 and the bidet nozzle body 22 and the posterior nozzle exterior member 20 and the bidet nozzle. Since the gap formed between the exterior members 23 can be eliminated completely, the cleanliness of the nozzle can be further improved.

  In this embodiment, the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 are made of stainless steel, but a metal such as stainless steel has a significantly higher surface hardness than a general resin material. In particular, even when the nozzle is driven back and forth each time it is used, such as a sanitary washing device, the entire body including the sliding portion of the buttocks nozzle exterior member 20 and the bidet nozzle exterior member 23 is hardly damaged, that is, the surface Since the smoothness does not change, there is no stain or bacteria breeding for many years, and the gloss continues to provide an effect that the user can continue to give a hygienic image.

  The contents described so far are based on the fact that the sanitary washing apparatus is originally configured to eject only about 1 L / min of washing water at any of the butt washing, bidet washing, and nozzle washing. It is very effective in maintaining the hygiene of the nozzle with this small flow rate of washing water without greatly changing this configuration.

  As described above, since the sanitary washing device of the present invention can effectively perform nozzle washing without using a chemical, it can be applied to all kinds of washing devices other than local washing.

1 is an external perspective view of a sanitary washing device according to Embodiment 1 of the present invention. Sectional drawing of the human body washing nozzle and washing | cleaning means in Embodiment 1 Partial sectional view of the human body washing nozzle in the first embodiment The block diagram of the water circuit structure of the sanitary washing apparatus in Embodiment 1 Micrograph of conventional nozzle Photomicrograph of nozzle in this embodiment Side sectional view of a conventional sanitary washing device

DESCRIPTION OF SYMBOLS 10 Warm-water-cleaning toilet seat 18 Wet washing nozzle 19 Wet nozzle body 20 Wet nozzle exterior member 31 Nozzle storage part 32 Nozzle cover

Claims (6)

Toilet seat and
A plurality of human body cleaning nozzles for cleaning a human body having a nozzle exterior member made of metal whose surface is smoothed;
Cleaning means for ejecting cleaning water for cleaning the human body cleaning nozzle;
A nozzle cover that covers at least a part of the human body washing nozzle and has an ejection opening for ejecting washing water to the human body washing nozzle;
A nozzle housing for housing the human body washing nozzle;
Drive means for driving the human body cleaning nozzle forward and backward from the storage unit to the human body cleaning position, and forming a flow path of cleaning water between the human body cleaning nozzle and the nozzle cover and the nozzle storage unit,
When cleaning the human body cleaning nozzle by the cleaning means,
A sanitary washing apparatus, wherein the plurality of human body washing nozzles are alternately driven forward and backward. It has a seating sensor that detects when a user is seated on the toilet seat,
The sanitary washing device according to claim 1, wherein when the seating sensor detects that the user has stood up from the toilet seat, the washing means cleans a plurality of human body washing nozzles. The sanitary washing device according to claim 1 or 2, wherein washing water is ejected from the washing means at predetermined time intervals to automatically wash the human body washing nozzle. The sanitary washing device according to any one of claims 1 to 3, wherein a time interval of washing of the human body washing nozzle by the washing means is varied depending on room temperature. After the human body washing with the human body washing nozzle is finished, the washing means is washed with washing water for each used human body washing nozzle,
The sanitary washing device according to any one of claims 1 to 4, wherein the washing is performed by increasing the flow rate of the washing water when washing by the washing means performed after the user stands up with the seating sensor. The apparatus further comprises a heating means for heating the washing water for washing the human body washing nozzle, and is ejected from the washing means.
The sanitary washing device according to any one of claims 1 to 5, wherein the washing water is heated.