JP2006307522A - Warm water washing toilet seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it hard for filthy water and contaminants during washing to be adhered to the surface of a washing nozzle by providing super water repellency and oil repellency to the surface of the washing nozzle fitted to a warm water washing toilet seat and reduce the amount of washing water used for cleaning. <P>SOLUTION: The water repellency and oil repellency of the surface of the nozzle are increased by forming a water repellent layer so formed that a V-shaped groove 15a is continuously formed in one direction on the surface of the washing nozzle. The direction of the V-shaped groove continuously formed in one direction is arranged to be parallel with the axial direction of the washing nozzle so that the contaminants adhered to the surface of the washing nozzle easily fall into a toilet along the direction of the groove. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a warm water cleaning toilet seat that easily removes dirt on the surface of the cleaning nozzle by improving the water repellency and oil repellency of the outer surface of the cleaning nozzle.

  The washing nozzle for washing the anal part and the female part of the warm water washing toilet seat includes a nozzle rod that reciprocates from the casing storage position to the washing position, and has a nozzle head having a water discharge hole for ejecting washing water at the tip thereof. Provided. In such a nozzle device, the nozzle head portion approaches the local part of the human body and jets the cleaning water during cleaning, so that it is easy to be exposed to sewage and filth during cleaning. Therefore, before or after the cleaning operation, cleaning water for local cleaning is sprayed onto the nozzle head portion, thereby cleaning off dirt.

  In order to easily remove dirt adhered in the cleaning of the nozzle head part, there has been proposed a warm water cleaning toilet seat having a water repellent layer on the nozzle head part surface as described in Patent Document 1 or Patent Document 2. Yes.

Japanese Utility Model Publication No. 4-77676 JP 2001-132055 A

  In recent years, customer needs for hot water cleaning toilet seats that realize energy saving such as power saving and water saving have increased, and there has been a problem that the amount of cleaning water used must be reduced. As a means for achieving this problem, it is necessary to reduce the amount of cleaning water used for cleaning the nozzle head portion before or after the cleaning operation.

  An object of the present invention is to impart water repellency to the surface of the cleaning nozzle so that sewage and dirt during cleaning are less likely to adhere to the surface of the cleaning nozzle, and the amount of cleaning water used for cleaning is reduced.

  In order to achieve the above object, according to the first aspect of the present invention, the cleaning nozzle has a water discharge hole for ejecting cleaning water and is movable between the standby position and the use position, and the cleaning at the standby position. A warm water cleaning toilet seat comprising a casing for storing a nozzle, wherein the surface of the cleaning nozzle is provided with a plurality of continuous grooves in the surface of the cleaning nozzle to form a water repellent layer on the surface of the cleaning nozzle. And By doing so, the water repellency and oil repellency of the surface of the cleaning nozzle are improved, and the dirt attached to the surface of the cleaning nozzle is reduced, and the attached dirt is easily removed during cleaning.

  In order to achieve the above object, according to the second aspect of the invention, the apex angles of the convex and concave portions of the plurality of grooves are 60 ° or more and 80 ° or less, and the groove pitch is 1 μm or more and 2 mm or less. In addition, high water repellency is imparted to the surface of the cleaning nozzle, so that less dirt is attached to the surface of the cleaning nozzle, and the attached dirt is easily removed during cleaning. In addition, the flow rate of cleaning water used for cleaning after the cleaning operation can be reduced.

  In order to achieve the above object, according to the third aspect of the present invention, since the groove is arranged so that the direction of the groove is parallel to the axial direction of the cleaning nozzle, the dirt adhering to the surface of the cleaning nozzle is transmitted to the groove direction and the toilet. Easier to fall inside.

  According to the present invention, by forming a plurality of grooves continuously in one direction on the surface of the cleaning nozzle to form a water-repellent layer, dirt attached to the surface of the cleaning nozzle is reduced and before the cleaning operation or An effect is obtained that the amount of cleaning water used for cleaning the nozzle head portion to be performed later can be reduced.

  Hereinafter, the best mode for carrying out the present invention will be described in detail.

  The cleaning nozzle of this embodiment is composed of a cleaning water channel portion having three cleaning water channels and a nozzle cover that covers the outside of the cleaning water channel portion, and the outer surface exposed portion of the nozzle cover is other than three cleaning water spouts It has a smooth shape with no holes, notches, or joints, and can be removed without leaving dirt on the outer surface exposed portion of the nozzle cover by nozzle cleaning.

  In addition, since the washing water channel part is covered with the outer nozzle cover and is not exposed to the appearance, when the washing water channel part is manufactured by resin injection molding, there are restrictions on the appearance quality such as sink, weld, silver, etc. In addition, the degree of freedom in designing the washing channel is increased. The resin to be used is not particularly limited, and acrylonitrile butadiene polystyrene copolymer resin (ABS), polypropylene resin (PP), polyethylene resin (PE), polyethylene terephthalate resin (PET), polybutylene terephthalate resin (PBT), polyethylene naphthalate. Phthalate resin, polyamide resin (PA), polyacetal resin (POM), polytetrafluoroethylene resin (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer resin (PFEP) tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin (PFA), etc., but acrylonitrile butadiene polystyrene copolymer resin (ABS) is preferably used because it has a small shrinkage and can be molded with high accuracy.

  In addition, by making the nozzle cover detachable, it is possible to easily replace and refresh the cleaning nozzle of the hot water cleaning toilet seat installed in a rental house or the like whenever the resident changes.

  The resin material for the nozzle cover is not particularly limited, and acrylonitrile butadiene polystyrene copolymer resin (ABS), polypropylene resin (PP), polyethylene resin (PE), polyethylene terephthalate resin (PET), polybutylene terephthalate resin (PBT). , Polyethylene naphthalate resin, polyamide resin (PA), polyacetal resin (POM), polytetrafluoroethylene resin (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer resin (PFEP) tetrafluoroethylene-perfluoroalkyl Vinyl ether copolymer resin (PFA) can be used, but polypropylene resin (PP) is preferably used because it is inexpensive and excellent in chemical resistance.

  Next, in the cleaning nozzle of the present invention, the water-repellent and oil-repellent properties of the nozzle cover surface are improved by providing a water-repellent layer on the base material with the V-shaped groove on the surface of the nozzle cover being substantially continuous in one direction. , Dirt attached to the surface can be greatly reduced. Further, by arranging the V-shaped groove so as to be parallel to the axial direction of the nozzle, the sewage at the time of local cleaning is easily transmitted to the groove direction and discharged into the toilet. Furthermore, the flow rate of the cleaning water used at the time of cleaning after the cleaning operation can be reduced.

  As for the shape of the V-shaped groove on the surface of the nozzle cover, the apex angles of the convex part and the concave part are preferably 60 ° or more and 80 ° or less, and the groove pitch is preferably 1 μm or more and 2 mm or less. If the apex angle of the convex part and the concave part is less than 60 °, the physical wear of the surface is inferior, so the shape of the groove is easily destroyed when cleaning the cleaning nozzle, and if it is 80 ° or more, the effect of super water repellency is obtained. It is difficult to obtain and the antifouling effect on the surface of the nozzle cover becomes thin. Further, if the pitch of the grooves is less than 1 μm, it is difficult to form the grooves, and if it is 2 mm or more, it is difficult to obtain the super-water-repellent effect and the antifouling effect on the nozzle cover surface becomes thin.

  The water repellent layer having the V-shaped groove shape on the surface of the nozzle cover can be obtained by installing a resin film. The resin film is mainly composed of polypropylene resin having good water repellency, and the installation method may be adhered to the outer surface of the nozzle cover or may be insert-molded.

  If necessary, additives such as colorants such as inorganic pigments and organic pigments, antibacterial agents, other lubricants, heat stabilizers, light stabilizers, and inorganic fillers may be mixed into the resin film.

  The thickness of the resin film is not particularly limited, but is generally 1 to 274 μm, preferably 10 to 200 μm.

  Next, as a method of attaching the resin film to the outer surface of the nozzle cover, first, a method of adhering with a double-sided tape or an adhesive may be mentioned. A known double-sided tape can be used. Adhesives include, but are not limited to, epoxy resins, acrylic resins, urethane resins, polyester resins, ethylene butyl alcohol resins, ethylene vinyl acetate copolymers, vinyl chloride / vinyl acetate copolymers. is not.

  Further, the resin film may be insert-molded on the outer surface of the nozzle cover, and the method can be performed by installing the resin film on the cavity mold side and performing normal injection molding after clamping. As a method of installing the resin film in the cavity mold, it may be installed by a human hand or by a robot. With the above manufacturing method, a nozzle cover in which a resin film is installed on the outer surface can be obtained.

  In the toilet seat for a warm water flush toilet in the present invention, a silicone resin or a fluororesin is used for the water repellent layer on the surface of the nozzle cover. Examples of the silicone resin used include silicone resins such as methylphenyl silicone resin and diphenyl silicone resin, and modified resins thereof such as alkyd modification, polyester modification, epoxy modification, acrylic modification, phenol modification, urethane modification, and melamine modification. Known materials such as modified silicone resins can be used without limitation, and solvent-free silicone resins are particularly preferred. Specific examples of the above-mentioned solventless silicone resin include a mixture of linear methyl vinyl polysiloxane and methyl hydrogen polysiloxane having vinyl groups at both ends or both ends and chains. The composition etc. which added the platinum catalyst are mentioned. In addition, as the fluororesin used, polytetrafluoroethylene (PTFE), perfluoroethylene propene copolymer (PFEP), perfluoroalkoxyalkane (PFA), polychlorotrifluoroethylene (PCTFE), polyvinylidene fluoride (PVDF) ), Polyvinyl fluoride (PVF), ethylene-tetrafluoroethylene copolymer (ETFE), polychlorotrifluoroethylene (ECTFE), polytetrafluoroethylene-perfluorodioxole copolymer (TFE / PDD), etc. Used without limitation.

  An antibacterial agent can be added and blended in the water repellent layer on the surface of the nozzle cover. As an antibacterial agent to be added, as an inorganic antibacterial agent, silver nitrate, silver sulfate, silver chloride, etc., zeolite carrying silver, copper, zinc, tin, or silica gel carrying silver, copper, zinc, tin, etc. can be mentioned. However, the present invention is not limited to this. With respect to the blending ratio, the antibacterial property is not observed if it is less than 0.1 part by weight relative to 100 parts by weight of the base resin, and if it exceeds 5 parts by weight, the properties of the resin composition such as coloring and deterioration are significantly impaired. Therefore, it is desirable that it is 0.3-3 weight part. Further, as an organic antibacterial agent, imidazole derivatives such as 2- (4-thiazolyl) benzimidazole, N-haloalkylthio compounds such as cyclofluoride, phenyl ether derivatives such as 10, 10′-oxybisphenoxaarsine, cecildimethylethyl Examples thereof include, but are not limited to, quaternary ammonium salts such as ammonium bromide and sulfone derivatives such as 2,3,5,6 tetracorrol-4- (methylsulfonyl) pyridine. As for the blending ratio, the organic antifungal agent has little antifungal property when it is less than 0.02 part by weight with respect to 100 parts by weight of the base resin, and if it exceeds 5 parts by weight, problems such as blooming occur. Therefore, the range of 0.05 to 1 part by weight is desirable.

  When a plurality of the cleaning nozzles of the present invention are mounted in the warm water cleaning toilet seat, a plurality of cleaning nozzles may be mounted in parallel or may be mounted in a column. Moreover, when installing one, you may mount in the center in a warm water washing toilet seat, and can also mount a washing nozzle with a certain angle away from the center.

As described above, the cleaning nozzle having the water repellent layer provided on the surface has been described based on the configuration in which the cleaning water channel portion that covers the cleaning water channel is covered with the nozzle cover. However, the cleaning water channel portion is exposed to the surface as it is. Of course, the present invention can also be applied to these cleaning nozzles.
In this case, the water repellent layer is provided on the surface of the cleaning water channel.

  EXAMPLES Hereinafter, although the Example of this invention is shown and this invention is demonstrated further more concretely, this invention is not limited to description of these Examples.

FIG. 1 is a perspective view showing a warm water cleaning toilet seat incorporating a cleaning nozzle of the present invention.
In FIG. 1, a toilet seat 2 and a toilet lid 3 are attached to a casing 1 of a sanitary washing device so as to be freely opened and closed. The casing 1 contains a cleaning nozzle device 4 for local cleaning, a supply pipe system for cleaning water, a hot air drying device for drying after cleaning, and the operation of the hot water cleaning toilet seat, etc. Is done by.

  FIG. 2 shows a side cross-sectional view when the cleaning nozzle of the present invention is arranged in a casing. In FIG. 2, the cleaning nozzle device 4 includes a frame 6 fixed in the casing 1 and a cleaning nozzle 7 that reciprocates with its upper surface as a sliding surface. The cleaning nozzle 7 includes a cleaning water channel portion 8 and a nozzle cover. 9 and a cleaning water spout 10 for ejecting cleaning water are provided. Then, on the base end side of the cleaning nozzle 7, supply ports 11 a and 11 b for supplying the cleaning water to the cleaning water channel are provided at two places. The cleaning nozzle 7 is connected to the output shaft of the motor 12 disposed in the casing 1 and performs a stroke operation between the illustrated storage position and the position indicated by the two-dot chain line.

  A cleaning cap 13 is provided at the front end of the frame 6 so as to cover the entire cleaning water discharge port 10 when the cleaning nozzle 7 is in its storage position. The cleaning cap 13 has a cross-sectional shape that covers at least the upper side and the side of the cleaning water spout 10 and is washed with water bounced off against the inner peripheral wall of the cleaning cap 13 when the cleaning water is discharged from the cleaning water spout 10. The tip of the cleaning nozzle 7 having the water spout 10 can be cleaned.

  FIG. 3 is a cross-sectional view showing an embodiment of the configuration of the resin film installed on the outer surface of the nozzle cover of the present invention. In FIG. 3, the resin film 14 includes a water repellent layer 15 and a resin layer 16. The resin layer 16 has a plurality of V-shaped grooves 15a continuous in one direction. As a result, the outer surface of the nozzle cover 9 exhibits high water repellency, and as a result, the antifouling property of the surface is remarkably improved, and dirt can be prevented from adhering.

  FIG. 4 is a cross-sectional view showing an embodiment in which the aforementioned resin film 14 is provided on the outer surface of the nozzle cover of the present invention. In FIG. 4, the outer surface of the nozzle cover 9 is provided with a resin film 14 provided with a water repellent layer in which a V-shaped groove 15 a continuous in one direction is formed. Furthermore, the groove 15a formed on the outer surface of the nozzle cover is formed so that the direction of the groove 15a is parallel to the axial direction of the cleaning nozzle 7 (that is, in the longitudinal direction of the nozzle cover). By doing so, dirt adhering to the surface of the washing nozzle is transmitted in the groove direction, and dirt easily falls into the toilet bowl during washing.

FIG. 5 is a block diagram showing an embodiment of the cleaning nozzle of the present invention. In FIG. 5, the cleaning nozzle 7 includes a cleaning water channel portion 8 composed of a single or a plurality of parts having a cleaning water channel, and a nozzle cover 9 covering the outside thereof. The nozzle cover 9 is a cylindrical body that covers the washing water channel portion 8 and includes a water repellent layer 15 provided with a V-shaped groove 15a on the surface. Further, only the cleaning water spout 10 that discharges the cleaning water supplied from the cleaning water channel of the cleaning water channel 8 is provided in the outer surface exposed portion, and there is no notch or joint.
The V-shaped groove 15 a is linearly formed in the longitudinal direction of the cleaning nozzle 7, that is, from the front end to the other end of the cleaning nozzle 7. For this reason, when the cleaning water is discharged from the cleaning water spout 10 in the cleaning cap 13, the water bounced off against the inner peripheral wall of the cleaning cap 13 moves along the groove 15a on the surface of the cleaning nozzle 7 in the tip direction. And discharged into the toilet. Therefore, since the water for cleaning the cleaning nozzle 7 moves on the cleaning nozzle 7, the amount of cleaning water can be reduced.

  FIG. 6 is a process diagram showing one embodiment of a method for obtaining a resin film on the outer surface of the nozzle cover of the present invention by insert molding. In FIG. 6, the resin film 14 is installed in the cavity mold 17 by a human hand or a robot. The nozzle cover 9 can be molded by ordinary injection molding after the core mold 18 is clamped. In this way, a molded product in which the resin film 14 is installed on the outer surface of the nozzle cover 9 is obtained.

  FIG. 7 is a perspective view of a first embodiment in which the cleaning nozzle device of the present invention is disposed in a casing. In FIG. 7, a plurality of cleaning nozzle devices 4 provided with the cleaning nozzle of the present invention are mounted in the casing 1.

  FIG. 8 shows a perspective view of a second embodiment in which the cleaning nozzle device of the present invention is arranged in a casing. In FIG. 8, one cleaning nozzle device 4 provided with the cleaning nozzle of the present invention is mounted in the casing 1.

In the following, examples of the present invention are compared with comparative examples.
(Example)
In the resin film installed on the outer surface of the nozzle cover as shown in FIG. 3, a V-shaped groove having convex and concave apex angles of 65 ° and groove pitch of 50 μm is continuously formed in one direction. 2 cc of fluoroalkylsilazane was dropped on the resin layer and spin coated at 1500 rpm for 10 seconds with a spin coater to form a water repellent layer. In order to make this resin film have the configuration shown in FIG. 4, it was adhered to the outer surface of the nozzle cover with an adhesive made of an epoxy resin.

(Comparative Example 1)
In a resin film installed on the outer surface of the nozzle cover as shown in FIG. 3, 2 cc of fluoroalkylsilazane is dropped on a resin layer having a smooth surface, and spin coated at 1500 rpm for 10 seconds with a spin coater to form a water repellent layer. Formed. In order to make this resin film have the configuration shown in FIG. 4, it was adhered to the outer surface of the nozzle cover with an adhesive made of an epoxy resin.

(Comparative Example 2)
In the resin film installed on the outer surface of the nozzle cover as shown in FIG. 3, a water repellent layer was formed from a mixture of linear methylvinylpolysiloxane and methylhydrogenpolysiloxane on a film material having a smooth surface. This resin film was bonded to the outer surface of the nozzle cover by insert molding as shown in FIG.

The following evaluation was implemented about the said Example and comparative example.
(Contact angle measurement)
Using a contact angle meter (CX-150, manufactured by Kyowa Interface Science Co., Ltd.), about 1 μl of water droplets or oleic acid was dropped from a PTFE (polytetrafluoroethylene) -coated microsyringe with an inner diameter of 0.1 mm. The contact angle was measured.
The contact angle of water viewed from the direction perpendicular to the grooves in the examples was 159 °, and the contact angle of oleic acid was 126 °.
In Comparative Example 1, the contact angle of water was 110 °, and the contact angle of oleic acid was 83 °. In Comparative Example 2, the contact angle of water was 103 °, and the contact angle of oleic acid was 78 °.
Therefore, it can be seen that the example has higher water repellency and oil repellency, and sewage and dirt are less likely to adhere to the surface.

(Evaluation of how easily sewage falls)
The nozzle cover prepared in Example and Comparative Examples 1 and 2 was installed in a cleaning nozzle device as shown in FIG. Oleic acid (manufactured by Wako Pure Chemical Industries, Ltd.) was dropped on the nozzle cover surface from above and adhered. Next, nozzle cleaning was performed until it was confirmed that the oleic acid adhering to the surface disappeared visually, and the amount of cleaning water used was measured.
The amount of washing water used in the examples was 5 ml.
The amount of washing water used in Comparative Example 1 was 20 ml, and the amount of washing water used in Comparative Example 2 was 25 ml.
Therefore, it was found that the amount of cleaning water used in the example was smaller, and the amount of cleaning water used for cleaning could be reduced.

The perspective view of the warm water washing toilet seat which incorporated the washing nozzle device of the present invention is shown. Side surface sectional drawing at the time of arrange | positioning the washing nozzle apparatus of this invention in a casing is shown. The cross-sectional schematic diagram of one Example of the resin film installed in the outer surface of the nozzle cover of this invention is shown. The cross-sectional schematic diagram of one Example at the time of forming a super water-repellent layer in the outer surface of the nozzle cover of this invention is shown. The block diagram of one Example of the washing nozzle of this invention is shown. The process schematic of one Example of the method of obtaining the resin film by insert molding on the outer surface of the nozzle cover of this invention is shown. The perspective view of the 1st Example which has arrange | positioned the washing nozzle apparatus of this invention in the casing is shown. The perspective view of the 2nd Example which has arrange | positioned the washing nozzle apparatus of this invention in the casing is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Toilet seat 3 Toilet lid 4 Washing nozzle device 5 Remote control for operation 6 Frame 7 Washing nozzle 8 Washing water channel part 9 Nozzle cover 10 Washing water spout 11a, 11b Supply port 12 Motor 13 Cleaning cap 14 Resin film 15 Water repellent layer 15a Groove 16 Resin layer 17 Cavity mold 18 Core mold

Claims (3)

  In a warm water cleaning toilet seat, comprising a cleaning nozzle that has a water discharge hole for ejecting cleaning water and is movable between a standby position and a use position, and a casing that houses the cleaning nozzle in the standby position A warm water cleaning toilet seat, wherein the surface of the cleaning nozzle is formed as a water-repellent layer by providing a plurality of grooves substantially continuously in one direction on the surface of the nozzle.   The warm water washing toilet seat according to claim 1, wherein apex angles of the convex portions and concave portions of the plurality of grooves are 60 ° or more and 80 ° or less, and a groove pitch is 1 µm or more and 2 mm or less. Toilet seat for cleaning. The warm water cleaning toilet seat according to claim 1 or 2, wherein the groove is disposed so that a direction of the groove is parallel to an axial direction of the cleaning nozzle.

Images