JP4940819B2 - Nozzle device and sanitary washing device using it - Google Patents

Description

  The present invention relates to a self-cleaning mechanism for cleaning a nozzle itself of a nozzle device for cleaning a local part of a human body.

  Conventionally, this type of nozzle device includes a first nozzle provided with a flow passage communicating with the jet nozzle and the jet nozzle, and a jet nozzle having a shape following the outer peripheral shape of the first nozzle so as to accommodate the first nozzle. A second nozzle having a flow path communicating with the jet port is provided, and the first nozzle and the second nozzle are configured to be able to advance and retract between the standby position and the individual cleaning positions. When washing water is ejected from the outlet of the first nozzle at the standby position, the washing water bounces back to the inner surface of the second nozzle and is applied to the periphery of the outlet of the first nozzle, so that the vicinity of the outlet can be washed. Further, the second nozzle has a cleaning chamber above the tip, and the second nozzle can also be self-cleaned (see, for example, Patent Document 1).

FIG. 3 shows a conventional nozzle device described in Patent Document 1. In FIG. As shown in FIG. 3, the first nozzle 1 is provided with a first jet port 2 at the tip, and a first wash water supply port 3 for supplying wash water at the base, and the first jet port 2 The first washing water supply port 3 communicates with a first flow path (not shown). The second nozzle 4 is provided with a second jet outlet 5 at the tip, and a second flush water supply port 6 for supplying flush water to the base, and the second jet 5 and the second flush water supply. The mouth 6 is configured to communicate with a second flow path (not shown). Note that the cleaning chamber is not shown.
JP 2000-8454 A

  However, in the above-described conventional configuration, only the first nozzle can be cleaned with the cleaning water ejected from the first jet port provided in the first nozzle, and the cleaning of the second nozzle requires separate supply and ejection of cleaning water. This is necessary, and a dedicated configuration and control are required for cleaning the second nozzle, and the entire nozzle device is complicated.

  The present invention solves the above-described conventional problems, and in a nozzle device including a nozzle body and a nozzle cover that covers the nozzle body, the nozzle body and the nozzle cover with cleaning water ejected from a nozzle cleaning outlet provided in the nozzle body. It is an object of the present invention to provide a hygienic, compact, and low-cost nozzle device by cleaning both.

  In order to solve the above-described conventional problems, a nozzle device according to the present invention includes a nozzle body having a plurality of ejection openings and flow paths, a cylindrical nozzle cover having ejection openings, and washing water for washing the outer surface of the nozzle cover. And a nozzle guide, and the nozzle body outlet is a local cleaning outlet for cleaning a local part of the human body and a nozzle cleaning outlet for cleaning the outer surface of the nozzle body.

  As a result, the nozzle body and nozzle cover, which are contaminated with sewage and filth during local cleaning, have a small and simple structure that realizes a self-cleaning mechanism for cleaning water sprayed from the nozzle cleaning outlet and the cover cleaning outlet. Nozzle device can be provided.

  The nozzle device of the present invention can provide a hygienic and easy-to-use nozzle device by realizing a small and simple configuration of a self-cleaning mechanism for cleaning the nozzle device itself.

  According to a first aspect of the present invention, there is provided a nozzle main body having a plurality of jet outlets for jetting cleaning water, a flow path for supplying cleaning water to the jet outlet, and at least one jet of the nozzle main body covering at least a part of the nozzle main body. A cylindrical nozzle cover having a jetting opening corresponding to the outlet; a cover cleaning jet for jetting cleaning water for cleaning the outer surface of the nozzle cover; a cover cleaning channel for supplying cleaning water to the cover cleaning jet; A nozzle guide for housing the nozzle body and the nozzle cover, and the nozzle outlet of the nozzle body has a local cleaning outlet for cleaning at least a local part of the human body and a nozzle cleaning outlet for cleaning the outer surface of the nozzle body. The cleaning water sprayed from the nozzle cleaning nozzle provided in the nozzle body cleans the outer surface of the nozzle body and the inner surface of the nozzle guide, and the cover cleaning nozzle The cleaning water spouted from the nozzle cleans the outer surface of the nozzle cover and the inner surface of the nozzle guide, and the self-cleaning mechanism for the nozzle body and nozzle cover, which is contaminated with sewage and dirt during local cleaning, is realized with a small and simple structure. Nozzle device can be provided.

  In the second invention, in particular, the cleaning that is ejected from the cover cleaning jet outlet by setting the cover cleaning jet outlet of the first invention on the upper part of the nozzle guide and jetting toward the substantially central axis of the nozzle cover. Water sprays toward the center of the upper surface of the nozzle cover and flows along the gap between the nozzle cover and the nozzle guide, washing the outer surface of the nozzle cover and the inner surface of the nozzle guide. The outer surface of the cover and the nozzle guide can be cleaned effectively and reliably.

  According to a third aspect of the invention, in particular, in the first or second aspect of the invention, the nozzle cleaning jet and the cover cleaning jet are formed by simultaneously ejecting cleaning water from the nozzle cleaning jet and the cover cleaning jet. The cleaning water is always ejected at the same time, and the outer surface of the nozzle body, the outer surface of the nozzle cover, the inner surface of the nozzle guide, and the inner surface of the nozzle guide can be simultaneously performed, and the nozzle device can be kept clean and is involved in nozzle cleaning. Control can be simplified.

  According to a fourth aspect of the present invention, in particular, in the first or second aspect of the present invention, the nozzle main body and the nozzle cover are formed by performing a jet of cleaning water from the nozzle cleaning jet outlet and the cover cleaning jet outlet at different times. The cleaning water sprayed from the cover cleaning jet outlet circulates through the gap between the nozzle cover and the nozzle guide to clean the outer surface of the nozzle cover and the inner surface of the nozzle guide, and the cleaning water jetted from the nozzle cleaning jet outlet. Circulates through the gap between the nozzle body and the nozzle cover, and the outer surface of the nozzle body and the inner surface of the nozzle cover can be cleaned separately at different times, and the nozzle body, nozzle cover and nozzle guide can be efficiently cleaned with less cleaning water. Can self-clean.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the nozzle body and the nozzle cover include a storage position in which substantially the entire nozzle body and nozzle cover are stored in the nozzle guide, and the nozzle body and nozzle. A part of the cover is slidable between the cleaning position where the nozzle guide is advanced from the nozzle guide, and the nozzle cover is stored in the nozzle guide at the storage position by cleaning the nozzle body and the nozzle cover at the storage position. In this state, the nozzle body is housed in the nozzle cover, so that the nozzle cover and the tip of the nozzle body that are easily contaminated by local cleaning can be effectively cleaned, and the nozzle cover and the nozzle body are cleaned. Can be kept in.

  In a sixth aspect of the present invention, in particular, in any one of the first to fifth aspects of the present invention, a cleaning enlarged portion having a larger inner diameter than other portions is installed at the tip portion of the nozzle guide, and the cleaning enlarged portion is in the storage position. The tip of the nozzle guide, which is particularly susceptible to contamination by local cleaning, is effective by providing a depth that covers the cleaning range of the nozzle, and the cleaning expansion section is configured to allow sufficient flow of cleaning water for cleaning the outer surface of the nozzle cover. The nozzle guide can be kept clean.

  According to a seventh aspect of the invention, in particular, in any one of the second to sixth aspects of the invention, the nozzle body includes a large diameter portion with a large outer diameter at the original portion and a protruding portion with a small cross-sectional area at the tip portion. By having a nozzle cleaning jet outlet at the front end of the diameter portion, the gap between the protrusion of the nozzle body and the nozzle cover can be increased, so that the cleaning water can be circulated better and locally. The tip of the nozzle body that is easily contaminated by cleaning can be efficiently cleaned.

  In an eighth aspect of the invention, in particular, in any one of the first to seventh aspects of the invention, the ejection direction of the nozzle cleaning ejection port is set in a direction offset with respect to the diameter direction of the nozzle cover. Since the jetted cleaning water strikes the inner surface of the nozzle cover obliquely, the reflected cleaning water flows along the inner surface of the nozzle cover, and the circulation of the cleaning water is improved, so that efficient cleaning can be performed.

  A ninth invention is a nozzle device according to any one of the first to eighth inventions, a cleaning water supply means for supplying cleaning water to the nozzle device, a control means for controlling the nozzle device and the cleaning water supply means, and a toilet By providing the toilet seat placed on the upper surface of the stool, it is possible to provide a hygienic and easy-to-use sanitary washing device that can always wash the local area with a clean nozzle device by self-cleaning the nozzle device. .

  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.

(Embodiment 1)
FIG. 1 is a perspective view showing a state in which a sanitary washing device using a nozzle device according to a first embodiment of the present invention is installed in a toilet, and FIG. 2 is a perspective view showing the overall appearance of the nozzle device. 3 shows a perspective view of the entire nozzle device with the upper case removed, FIG. 4 shows a perspective view of the nozzle device at the buttocks cleaning position, and FIG. 5 shows the nozzle device at the bidet cleaning position. FIG. 6 shows a detailed sectional view of the tip of the nozzle device.

  As shown in FIG. 1, a toilet seat 13 and a toilet lid 14 are pivotally supported on a main body 12 disposed at a rear portion of a sanitary washing device 11 installed on an upper surface of a toilet bowl 10. The nozzle device 15 of the first embodiment is installed, and a cleaning water supply means (not shown) for supplying cleaning water to the nozzle device 15 and a nozzle device 15 and the cleaning water supply means are provided inside the main body 12. Control control means (not shown) and the like for controlling are arranged.

  As shown in FIG. 2, a casing 16 molded from a resin material has a configuration in which an upper case 17 and a lower case 18 that can be separated vertically are combined, and a substantially cylindrical nozzle guide 19 is formed at the center of the casing 16. A tip opening 20 is provided at one end of the nozzle guide 19. A cylindrical nozzle unit 21 is slidably installed in the nozzle guide 19, and as shown in FIG. 2, the storage position in which the nozzle unit 21 is accommodated in the nozzle guide 19, and as shown in FIG. The nozzle uni 21 can be moved back and forth between the cleaning positions protruding from the tip opening 20.

The nozzle unit 21 includes a substantially cylindrical nozzle body 22, a substantially cylindrical nozzle cover 23 that accommodates the nozzle body, and a connecting means 24 that pulls the nozzle cover 23 with the nozzle body 22.

  The original portion of the nozzle body 22 is composed of a large diameter portion 25 having a large outer diameter, and the tip portion is composed of a bidet nozzle portion 26 having a small outer diameter. The central positions of the large diameter portion 25 and the bidet nozzle portion 25 are different, and the bidet nozzle portion 26 is large. It is disposed below the diameter portion 25. The large-diameter portion 25 has an outer diameter slightly smaller than the inner diameter of the nozzle cover 23, and has a dimensional relationship that allows the nozzle body 22 and the nose cover 23 to slide smoothly with each other. The nozzle body 22 is formed of a resin material, but the bidet nozzle portion 26 is entirely covered with a stainless steel cover 27.

  7 shows an AA section of FIG. 6, and FIG. 8 shows a BB section. As shown in FIG. 7, three channels of a buttocks cleaning channel 28, a bidet cleaning channel 29, and a nozzle cleaning channel 30 are formed inside the nozzle body 22.

  The buttocks cleaning channel 28 is arranged from the original portion to the vicinity of the tip of the large-diameter portion 25, and the tip thereof is the buttocks-cleaning outlet 31 provided on the upper surface of the large-diameter portion 25 as shown in FIG. It is connected to. The bidet cleaning flow path 29 is disposed from the original portion to the substantially tip portion of the bidet nozzle portion 26, and the tip is connected to a bidet cleaning jet port 32 provided on the upper surface of the bidet nozzle portion 26. The nozzle cleaning flow path 30 is arranged from the original portion to the substantially tip portion of the large diameter portion 25, and as shown in FIG. 8, the tip is a nozzle cleaning jet port provided below and on the outer surface of the large diameter portion 25. 33 is connected.

  In order to arrange the three channels in the nozzle body 22, the bottom cleaning channel 28 and the nozzle cleaning channel 30 are arranged symmetrically with respect to the center of the nozzle body 22 as shown in FIG. In addition, the buttocks cleaning flow path 28 is located at a position that is shifted in the horizontal direction from the center of the nozzle body 22.

  On the other hand, as shown in FIG. 8, the butt cleaning outlet 31 is disposed at the center of the nozzle body 22, and the butt cleaning flow path 28 is curved in the vicinity of the butt cleaning outlet 31 as shown in FIG. 10. It is connected to the butt cleaning outlet through the portion 28b.

  FIG. 10 shows details of the bending portion 28b, and a concentric rectifying wall 28c is arranged closer to the center of the bending than the center of the flow path of the bending portion 28b. The rectifying wall 28c has a thickness of 0.5 mm, and has an upstream end and a downstream end that are thinly pointed, and is installed vertically from the bottom of the flow path to the ceiling.

  In order to form the curved portion 28b having the above-described configuration, in the present embodiment, the vicinity of the bottom cleaning jet 31 of the nozzle body 22 is formed by separate upper and lower parts. As shown in FIG. 10, the nozzle body base material 22a formed integrally with the buttocks cleaning channel 28 and the rectifying wall 28c, and the buttocks cleaning nozzle 31 are provided so as to cover the open part of the buttocks cleaning channel. The lid 22b is bonded from above.

  The bottom spout 31 has one opening. As shown in FIG. 8, the original part is a two-stage structure having a large hole part 31a having a large opening area and a tip part having a small hole part 31b having a small opening area. The opening area of the large hole portion 31a is approximately twice that of the small hole portion 31b.

  The corner portion where the large hole portion 31a and the small hole portion 31b are switched is formed in an edge shape that stands perpendicularly. By forming in an edge shape, separation of the flow easily occurs and the cleaning water becomes an intermittent flow. Since the cleaning water intermittently hits the local area, the detergency increases and the sensation of strong cleaning to the human body is generated. Therefore, an effect that gives a higher feeling of satisfaction than the load actually applied to the local area is born.

  The smaller the small hole portion 31b is, the easier it is to peel off and an intermittent flow. However, since the regulation of the direction of movement of the cleaning jet is weak, it becomes easy to diffuse. On the contrary, when the thickness is increased, the jet diffusion is suppressed but the intermittent feeling is reduced. Therefore, in this embodiment, the thickness of the small hole portion 31b is set to 0.5 mm as the optimum value of the balance between the jet diffusion and the intermittent feeling. It is said.

  The bidet cleaning jet 32 is composed of a plurality of openings. The nozzle cleaning jet 33 includes an internal cleaning jet 33a provided downward and an external cleaning jet 33b provided on the upper side. The jet direction of the two nozzle cleaning jets 33 is the same as that of the nozzle body 22. The direction is set to be offset with respect to the diameter direction.

  Cleaning water supply ports 28a, 29a, 30a for supplying cleaning water are installed in the original portions of the buttocks cleaning channel 28, the bidet cleaning channel 29, and the nozzle cleaning channel 30. The cleaning water supply means communicates with a hose (not shown). Further, a tooth-shaped rack 34 is formed on the lower surface of the nozzle body 22 over substantially the entire length.

  As shown in FIG. 11, the nozzle cover 23 includes a nozzle cover body 23a in which a thin stainless steel plate is formed in a cylindrical shape and a cover rear end member 23b of a resin molded product. The cover rear end member 23b is provided with a connecting projection 48 and a positioning projection 51 projecting in the horizontal direction on both sides of a substantially semi-cylindrical shape with the lower part released. As shown in FIGS. 11 and 12, the nozzle cover main body 23a and the cover rear end member 23b are joined by overlapping the overlapping portions 23c of the nozzle cover main body 23a and the cover rear end member 23b. The fixing projection 23d provided in the vicinity of the open end and the fixing hole 23e provided in the nozzle cover body 23a are fixed by fitting. The inner diameter dimension of the fixing hole 3e is formed to be slightly larger than the outer dimension of the fixing protrusion 23d, and the assembly is possible even if the nozzle cover main body 23a or the cover rear end member 23b has some errors.

  In addition, the size of the overlapping portion 23c of the cover rear end member 23b is smaller than the other portions and is formed to be substantially the same as the inner surface of the nozzle cover main body 23a, and the cover rear end member 23b and the nozzle cover main body 23a are closely overlapped. It is the composition to do.

  On the other hand, as shown in FIG. 3, a protrusion 23f projecting forward is provided at the center of the upper surface of the cover rear end member 23b, and the left and right direction by engaging with a recess 23g provided at the rear end of the nozzle cover body 23a. The projection 23f and the recess 23g are configured to have substantially the same dimensions, so that even if there is a slight error in the dimensions of the nozzle cover main body 23a or the cover rear end member 23b as described above, The nozzle cover main body 23a and the cover rear end member 23b are reliably bonded without using an adhesive or a bonding member in a state where the nozzle cover main body 23a and the cover rear end member 23b are positioned at appropriate positions.

  The front end surface of the nozzle cover 23 formed by joining the nozzle cover main body 23a and the cover rear end member 23b as described above forms a closed surface, the rear end surface is an open surface, and the nozzle main body can be inserted from the rear end surface. It has a simple shape. A bidet nozzle inlet / outlet 35 through which the bidet nozzle portion 26 of the nozzle main body 22 can pass is provided on the distal end surface, and only the bidet nozzle portion 26 of the nozzle main body 22 can be projected from the bidet nozzle inlet / outlet 35. The part 26 is movable between a state in which substantially the whole protrudes from the bidet nozzle inlet / outlet port 35 of the nozzle cover 23 and a state in which it is accommodated.

On the upper surface of the nozzle cover 23, with the nozzle body 22 housed in the nozzle cover 23, the butt cleaning opening 36 and the nozzle are respectively located at positions corresponding to the butt cleaning outlet 31 and the nozzle cleaning outlet 33 of the nozzle body 22. A cleaning opening 37 is provided, and the cleaning water ejected from the buttocks cleaning outlet 31 and the nozzle cleaning outlet 33 passes through and is jetted without directly contacting the buttocks cleaning opening 36 and the nozzle cleaning opening 37.

  A slit-like rack opening 38 is provided at a position corresponding to the rack 34 of the nozzle body 22 at the rear of the lower surface of the nozzle cover 23, and a drain port 39 for discharging cleaning water in the nozzle cover 23 is provided at the front of the lower surface. It is.

  The nozzle guide 19 of the casing 16 that accommodates the nozzle unit 21 including the nozzle body 22, the nozzle cover 23, and the connecting means 24 has an inner diameter slightly larger at the rear portion than the outer diameter of the nozzle cover 23. The nozzle guide 19 is dimensionally slidable.

  A cleaning enlarged portion 40 having a large inner diameter is installed in the vicinity of the tip opening 20 of the nozzle guide 19, and the cleaning enlarged portion 40 has sufficient nozzle cleaning outlet 33 and buttocks cleaning outlet 31 at the storage position of the nozzle unit 21. The depth to cover. The inner diameter of the cleaning enlarged portion 40 is such that a slight gap is formed over the entire outer surface of the nozzle cover 23 and the cleaning water for cleaning the nozzle can flow through the gap. Further, a drain port 41 for discharging cleaning water is provided at the lower part of the cleaning enlargement unit 40.

  Further, a nozzle shutter 42 pivotally supported at the upper portion of the tip opening 20 of the nozzle guide 19 and pivotable up and down is provided, and the tip opening 20 can be closed while the nozzle unit 21 is housed in the nozzle guide 19. When the nozzle unit 21 advances to the cleaning position, the nozzle shutter 42 opens upward by being pushed forward at the tip of the nozzle unit 21, and when the nozzle unit 21 is stored at the storage position, the nozzle shutter 42 rotates downward by its own weight. It is configured to move and close.

  13, 14, and 15 are cross-sectional views illustrating the driving state of the nozzle device, FIG. 13 illustrates the storage state, FIG. 14 illustrates the buttocks cleaning state, and FIG. 15 illustrates the bidet cleaning state. is there.

  As shown in the figure, nozzle driving means 43 is installed in the lower part of the casing 16. The nozzle drive means 43 includes a drive motor 44, a worm gear (not shown), a transmission gear 45, and a pinion gear 46, and the pinion gear 46 is mounted on the lower surface of the nozzle body 22 through the rack opening 38 of the nozzle cover 23. It is installed at the position where it meshes with. The rotation of the drive motor 44 is transmitted to the pinion gear 46 at a reduced rotational speed via the worm gear and the transmission gear 45. The pinion gear 46 rotates, so that the nozzle body 22 having the rack 34 can slide. ing. The drive motor 44 is connected to control means (not shown), and the operation is controlled by the control means. A rotation detection sensor 47 that detects the number of rotations of the drive motor 44 is provided at the rear of the drive motor 44.

  16 to 21 are cross-sectional views showing details of the connecting means for pulling and moving the nozzle body 22 and the nozzle cover 23. FIG.

  As shown in the figure, the nozzle body 22 and the nozzle cover 23 are provided with connecting means 24 for pulling and moving the nozzle cover 23 by moving the nozzle body 22. The connection means 24 includes a connection receiving portion 48 installed on one side surface of the cover rear end member 23 b and a connection member 49 installed on the rear end portion of the nozzle body 22.

As shown in FIGS. 20 and 21, the connection receiving portion 48 molded with a resin material is installed in parallel with the nozzle cover 23 on one side surface of the cover rear end member 23 b. A front concave portion 48a and a rear concave portion 48b are provided at two positions on the lower surface of the connection receiving portion 48 in the front-rear direction, and the interval between the front concave portion 48a and the rear concave portion 48b is determined according to the bidet nozzle portion 26 of the nozzle body 22. The dimension is approximately the same as the length of.

  The connecting member 49 is provided on the side surface of the rear end portion of the nozzle body 22. The connecting member main body 49 a formed integrally with the nozzle main body 22 is provided with a connecting piece 50 facing the connecting receiving portion 48, and the connecting piece 50 is formed of an elastic metal material and one end is fixed to the connecting member 49. The connection protrusion 50a is formed at the tip of the cantilever structure, and the connection protrusion 50a has a shape that fits into the front recess 48a and the rear recess 48b of the connection receiver 48. When the connecting protrusion 50a is fitted into the front recessed part 48a or the rear recessed part 48b, the connecting member 49 and the connection receiving part 48 are connected, and the nozzle body 22 and the nozzle cover 23 can be interlocked.

  Further, a positioning projection 51 is provided on the opposite side surface of the cover rear end member 23 b where the connection receiving portion 48 is provided. The positioning projection 51 is provided with a front stopper 52 and a rear stopper 53 provided on the side of the nozzle guide 19 of the casing 16. This is a means for restricting the sliding range of the nozzle cover 23 by contacting the nozzle cover 23. Further, a sliding restriction groove 51a that is long in the front-rear direction is formed at the center of the positioning protrusion 51, and a sliding restriction protrusion 49b provided on the connecting member main body 49a is inserted as shown in FIGS. The sliding regulating protrusion 49b moves in the sliding regulating groove 51a, and thus has an effect of regulating the sliding range between the coupling member 49 and the coupling receiving portion 48. The range of movement of the sliding restricting projection 49b is slightly longer than the distance between the front concave portion 48a and the rear concave portion 48b, and a strong force is applied to the nozzle body 22 to cause the front concave portion 48a or the rear concave portion to be moved. It is possible to restrict the connection protrusion 50a from protruding in the reverse direction from 48b.

  About the nozzle device comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  2, the nozzle body 22 is located at the rearmost part of the nozzle guide 19 and the nozzle cover 23 is located at the rearmost part of the sliding range. The positioning protrusion 51 is in contact with a rear stopper 53 provided on the side of the nozzle guide 19, and both the nozzle body 22 and the nozzle cover 23 are disposed at the most retracted position. At this time, the connecting protrusion 50a of the connecting piece 50 is in a state of being fitted into the rear recessed portion 48b of the connecting receiving portion 48 as shown in FIG. 20, and the sliding restricting protrusion 49b is shown in FIG. It arrange | positions in the rear-end part vicinity of the groove | channel 51a.

  When cleaning is started from the housed state, first, when the user operates the operation means, the control means starts control, and the rotation of the drive motor 44 is transmitted to the pinion gear 46, whereby the pinion gear 46 and The nozzle main body 22 having the meshed rack 34 is moved rearward, but the nozzle main body 22 cannot move further rearward, so that the position in the front-rear direction does not change. With this position as the origin, the subsequent positions of the nozzle body 22 can be controlled while estimating the amount of movement of the nozzle body 22 by detecting the rotation speed of the drive motor 44 with the rotation speed detection sensor 47. .

  Next, the drive motor 44 is reversely rotated to move the nozzle body 22 forward. At this time, the nozzle cover 23 moves forward in a state of being pulled and integrated with the nozzle body 22 by maintaining the state in which the connection protrusion 50a of the connection piece 50 is fitted in the rear recessed portion 48b of the connection receiving portion 48.

  When the user's operation is a hip cleaning operation, as shown in FIGS. 4, 14, and 17, the nozzle body 22 and the nozzle cover 23 moved forward follow the control sequence set in advance. When the rotational speed of the drive motor 44 from the origin state reaches a set value, the drive motor 44 stops. At this time, the positioning projection 51 provided on the nozzle cover 23 is in a state of being stopped just before contacting the front stopper 52 provided on the side of the nozzle guide 19, and this position becomes the standard position for butt washing.

  In this state, the control means controls the washing water supply means, and the butt washing is started by passing water through the butt washing flow path 28. The wash water that has flowed into the buttocks cleaning flow path 28 passes through the curved portion 28b from the straight portion and is ejected from the buttocks washing outlet 31. Generally, if the washing water is ejected through the curved portion 28b, A turbulent velocity gradient is generated at the curved portion 28b, the ejection direction from the buttocks washing ejection port 31 becomes unstable, and it becomes impossible to eject appropriately toward the local area.

  In the curved portion 28b, the flow velocity on the outer peripheral side is increased, and the flow velocity on the inner peripheral side is decreased. At this time, a turbulent flow is generated because the flow stagnates on the inner wall of the buttocks cleaning channel 28.

  In order to eliminate this phenomenon, in the present embodiment, by providing a rectifying wall 28c on the curved portion 28b, the flow on the outer peripheral side and the flow on the inner peripheral side are separated to generate a rectifying effect and reduce turbulent flow. Can do. As a result of verifying the installation position of the rectifying wall 28c by experiment, it has been found that the rectifying effect is maximized by providing it slightly inward from the center of the flow path of the curved portion 28b. In this embodiment, the rectifying wall 28c is installed at that position. .

  The washing water that has passed through the curved portion 28b is ejected from the ejection port 31 toward the local part of the user seated. The ejection port 31 of the present embodiment has a two-stage shape having a large hole portion 31a and a small small hole portion 31b. By changing the opening area and changing the flow velocity to generate turbulent flow, the washing water becomes an intermittent flow and hits the local area, and the user feels stronger than the load actually applied to the local area.

  The switching of the water flow path and the adjustment of the flow rate are performed by a flow rate adjusting valve provided in the washing water supply means. At this time, the upper part of the buttocks washing outlet 31 and the bidet washing outlet 32 is covered with the nozzle cover 23, and the sewage generated by the buttocks washing is not directly applied. The cleaning outlet 32 is kept clean.

  In addition, when the sealing performance of the flow rate control valve is insufficient, the flow rate switching between the buttocks cleaning channel 28 and the bidet cleaning channel 29 is not performed completely, and a minute amount of water is discharged from the bidet cleaning jet port 29 even during the buttocks cleaning. However, since the upper part of the bidet washing outlet 29 is covered with the nozzle cover 23, there is no possibility that the water is jetted outside the nozzle.

  When the drive motor 44 is driven to rotate forward and reverse alternately while the buttocks are being washed, the nozzle body 22 and the nozzle cover 23 are swung back and forth with respect to the standard position, and the washing water Can wash a wider area of the human body simultaneously.

  When the hip cleaning stop is operated, the drive motor 44 rotates in the reverse direction, the nozzle body 22 and the nozzle cover 23 move rearward, and return to the original storage state.

  Next, when bidet cleaning is selected, after confirming the origin position of the nozzle body 22 in the same manner as the butt cleaning, the drive motor 44 rotates to move forward, and the nozzle body 22 and the nozzle cover 23 move forward. This is the same as in the case of buttocks cleaning, but in the case of bidet cleaning, the nozzle body 22 is moved further forward beyond the buttocks cleaning position.

  At this time, as shown in FIG. 18, the positioning projection 51 provided on the nozzle cover 23 contacts the front stopper 52 provided on the side of the nozzle guide 19, and the nozzle cover 23 cannot move any further. When the nozzle body 22 is further moved forward, the connection protrusion 50a of the connection piece 50 is detached from the rear recess 48b. In order to enable such an operation, it is a condition that the driving torque of the driving motor 44 that moves the nozzle in the front-rear direction is larger than the load value required to remove the connecting protrusion 50a.

  The nozzle main body 22 and the nozzle cover 23 are separated from each other by the disconnection of the connecting protrusion 50a from the rear concave portion 48b, and only the nozzle main body 22 is forward of the nozzle cover 23 whose movement is restricted by the front stopper 52. The bidet nozzle portion 26 of the nozzle body 22 starts to advance from the bidet nozzle inlet / outlet port 35 provided on the tip surface of the nozzle cover 23.

  When the nozzle body 22 is further moved forward, the connection protrusion 50a is fitted into the front recessed portion 48a. When the connecting protrusion 50a is completely fitted into the front recessed portion 48a, the bidet nozzle portion 26 of the nozzle body 22 is completely advanced from the bidet nozzle entrance 35 as shown in FIG. At this time, position control based on the number of rotations of the drive motor 44 is performed in advance by a control sequence so that the forward movement of the nozzle body 22 is completed. At this time, if the nozzle body 22 is to be moved further forward due to a malfunction of the drive motor 44, the slide restricting projection 49b abuts against the front end of the slide restricting groove 51a to restrict further forward movement. Thus, the connecting protrusion 50a does not jump out of the front recessed portion 48a.

  The drive motor 44 is moved backward to a standard position for bidet cleaning when the drive motor 44 is slightly rotated in the reverse direction with the connection protrusion 50a fitted in the front recess 48a in this manner. Stop. This state is the standard position for bidet cleaning shown in FIG.

  When the nozzle body 22 reaches the standard position for bidet washing, the control means controls the washing water supply means to start water flow through the bidet washing flow path 29, thereby starting bidet washing. The switching of the water flow path and the adjustment of the flow rate are performed by a flow rate adjustment valve of the washing water supply means. At this time, the upper part of the buttocks washing spout 31 is covered with the nozzle cover 23, and the sewage generated by the bidet washing does not directly reach the buttocks washing spout 31. To be kept. In addition, when the sealing performance of the flow rate control valve is insufficient, the flow rate switching between the buttocks cleaning flow path 28 and the bidet cleaning flow path 29 is not performed completely, and a minute amount of water is discharged from the buttocks cleaning jet 31 even during bidet cleaning. However, since the upper part of the buttocks cleaning jet 31 is covered with the nozzle cover 23, there is no possibility that the water is jetted outside the nozzle.

  When the drive motor 44 is driven so as to alternately repeat forward rotation and reverse rotation while performing bidet cleaning, the nozzle body 22 and the nozzle cover 23 are swung back and forth with respect to the standard position, and the cleaning water A wider area of the human body can be cleaned simultaneously.

  When the bidet cleaning is stopped, the drive motor 44 rotates in the reverse direction, and the nozzle body 22 and the nozzle cover 23 start moving backward. In the middle of moving backward for storage, the positioning projection 51 provided on the nozzle cover 23 abuts on the rear stopper 53 provided on the side of the nozzle guide, and the nozzle cover 23 cannot move any further. When the nozzle body 22 is further moved rearward, the connection protrusion 50a of the connection piece 50 is detached from the front recess 48a. In order to enable such an operation, it is a condition that the driving torque of the driving motor 44 that moves the nozzle body 22 in the front-rear direction is larger than the load value required for releasing the connection protrusion 50a.

The nozzle main body 22 and the nozzle cover 23 are separated from each other by the disconnection of the connecting protrusion 50a from the front recessed portion 48a, and only the nozzle main body 22 is rearward of the nozzle cover 23 whose movement is restricted by the rear stopper 53. As a result, the bidet nozzle portion 26 of the nozzle body 22 starts to be housed in the bidet nozzle inlet / outlet port 35 provided on the front end surface of the nozzle cover 23. When the nozzle body 22 is further moved rearward, the connection protrusion 50a gets stuck in the rear recess 48b. When the connecting protrusion 50a is completely inserted into the rear recessed portion 48b, the bidet nozzle portion 26 of the nozzle body 22 is completely stored in the bidet nozzle inlet / outlet 35. At this point, the nozzle body 22 contacts the rear end of the nozzle guide 19 and cannot move any further backward.
The rotation of the drive motor 44 is stopped by position control based on the number of rotations of the drive motor 44 based on a preset control sequence.

  When the butt cleaning and the bidet cleaning are completed and the nozzle body 22 is stopped at the storage position, the control means starts the nozzle cleaning control. The control means controls the washing water supply means, and the nozzle washing is started by starting water flow through the nozzle washing flow path 30. The switching of the water flow path and the adjustment of the flow rate are performed by a flow rate adjustment valve of the washing water supply means.

  When water passes through the nozzle cleaning flow path 30, cleaning water is ejected from the two nozzle cleaning ejection ports 33 provided at the front end portion of the large diameter portion 25 of the nozzle body 22. The cleaning water sprayed from the external cleaning nozzle 33 b provided on the outer surface is sprayed to the outside of the nozzle cover 23 through the nozzle cleaning opening 37 provided in the nozzle cover 23, and the cleaning enlarged portion of the nozzle guide 19 covering the nozzle cover 23. The outer peripheral wall of the nozzle cover 23 and the buttocks cleaning spout 31 are cleaned with cleaning water that hits the inner wall 40 and rebounds. Also, the washing water ejected from the internal washing outlet 33a provided downward flows to the side portion of the bidet nozzle portion 26 of the nozzle body 22 and cleans the surface of the bidet nozzle portion 26 and the bidet washing ejection port 32.

  At this time, as shown in FIG. 8, the inner cleaning outlet 33 a, the outer cleaning outlet 33 b and the nozzle cleaning opening 37 are set in a direction offset from the diameter direction of the nozzle body 22, so 19 and the nozzle cover 23 are swirled in the circumferential direction, and the contamination of the nozzle body 22 and the nozzle cover 23 can be effectively removed. Washing water that has been cleaned is discharged from drain ports 39 and 41 provided below the nozzle cover 22 and the nozzle guide 19.

  As described above, in the present embodiment, a nozzle body including a butt cleaning spout for ejecting cleaning water, a bidet cleaning spout, a nozzle cleaning spout, and a flow path for supplying cleaning water to each spout And a cylindrical nozzle cover that covers the nozzle body and has an ejection opening corresponding to the butt cleaning ejection port, a connecting means for coupling the nozzle body and the nozzle cover, a nozzle guide for housing the nozzle body and the nozzle cover, By providing a drive means for driving the nozzle body to advance and retreat, the nozzle and the flow path are integrated in the nozzle body, and the nozzle cover can be made simple, so the entire nozzle device is small. It can be set as a simple structure.

  In addition, by sliding the nozzle body and the nozzle cover relative to each other, by aligning the corresponding jet outlet and the jet opening, the washing water from the butt washing jet outlet is jetted through the jet opening, When the washing water is jetted, the nozzle body, particularly the vicinity of the bidet washing jet outlet and the buttocks washing jet outlet, is covered with a nozzle cover, so that the nozzle body is not contaminated by washing water that is dirty by washing, and is hygienic.

  In addition, the nozzle cover has a simple configuration without using an adhesive or a joining member by fixing the nozzle cover body formed of stainless steel and the cover rear end member by resin molding by fitting the fixing projection 23d and the fixing hole. It is securely joined. Moreover, since the nozzle cover is made of stainless steel, dirt is difficult to adhere and the attached dirt can be easily removed by washing.

  In addition, when cleaning the bidet, the cleaning nozzle is ejected with the bidet nozzle projecting from the front end surface of the nozzle cover, so that the cleaning water can be sprayed close to the cleaning target, and a delicate spray configuration is desired. Can be carried out directly from the bidet washing outlet, so that an optimum injection form can be obtained.

In addition, since the nozzle cover is linked to the nozzle body between the storage position and the buttocks cleaning position via the connecting means, only the nozzle body is driven by the driving means, and both the nozzle body and the nozzle cover are connected together. In addition to sliding, only the nozzle main body can be slid independently to the bidet cleaning position, and two driving objects can be driven to their optimum positions by one driving means. Cost can be reduced.

  In addition, the cleaning water sprayed from the outer cleaning outlet of the nozzle cleaning outlet provided in the nozzle body is jetted to the cleaning enlarged portion of the nozzle guide through the nozzle cleaning opening and reflected by the nozzle guide, and the outer surface of the nozzle cover and the nozzle guide The cleaning water sprayed from the internal cleaning outlet is reflected by the nozzle cover and can mainly clean the outer surface of the bidet nozzle part and the inner surface of the nozzle cover. The self-cleaning mechanism for the nozzle body and nozzle cover contaminated by the above can be realized with a small and simple configuration, and a hygienic nozzle device can be provided.

  In addition, by providing a rectifying wall in the curved part of the flow path, by suppressing turbulent flow in the flow path, it is possible to stabilize the ejection direction from the buttocks washing ejection port, and appropriately toward the local area Wash water can be spouted out. Moreover, by making the upstream end and the downstream end of the rectifying wall thin and pointed, the flow of washing water can be smoothly divided and mixed again. In particular, since the separated jets are smoothly mixed by making the downstream side thin and sharp, the rectifying effect is increased. Conversely, when the downstream side of the rectifying unit is shaped to leave an edge, vortices are generated by collision when the separated washing water merges, and flow separation at the edge is likely to occur, causing intermittent flow. It becomes.

  In addition, by using a two-stage shape for the butt cleaning spout, a large hole part and a small hole part, the wash water becomes an intermittent flow and hits the spray local part, so it feels stronger than the load actually applied to the local part. A person can obtain a high feeling of cleaning.

  In this embodiment, the nozzle drive means employs a transmission mechanism via a gear including a drive motor, a worm gear, a transmission gear, and a pinion gear. However, the present invention is not limited to this. A mechanism may be used.

  Further, in the present embodiment, the member that covers the nozzle cover and the bidet nozzle portion is formed of stainless steel, but these materials are not limited to this, other metal materials having corrosion resistance, inorganic materials such as ceramics, or Cleanliness can be further improved by using resin materials, particularly those obtained by adding antibacterial or sterilizing performance or water repellency to these materials.

  In the present embodiment, the connecting piece of the connecting means is formed of a metal material having elasticity. However, the connecting piece is not limited to this, and may be a resin material having elasticity. The members can be molded integrally and can be manufactured at low cost.

  In this embodiment, the thickness of the rectifying wall is set to 0.5 mm. However, the thickness is not limited to this. A thickness of about 0.5 to 1.0 mm is necessary. On the other hand, in order to suppress the pressure loss of the flow path, it is desirable to form the rectifying wall as thin as possible. Therefore, in this embodiment, the minimum thickness is 0. .5mm was adopted. As a method of forming the rectifying wall thinner, a method of forming the rectifying wall as a separate member with a metal or the like and arranging it on the curved portion of the butt cleaning flow path can be considered.

Moreover, in this Embodiment, although the thickness of the small hole part was 0.5 mm, it is not restricted to this, By making it the thickness of the range of 0.5-1.5 mm, the intermittent flow of washing water is It has been confirmed that the desired intermittent flow can be obtained by selecting the thickness. Moreover, although the opening area of the large hole portion is about twice that of the small hole portion, it has been confirmed that an intermittent flow can be obtained in the range of 1.5 to 2.5 times in this respect as well. By changing it, an optimal intermittent flow can be obtained.

(Embodiment 2)
FIG. 22 is an exploded perspective view of the nozzle body 54 according to the second embodiment of the present invention.

  This embodiment is different from the first embodiment in that the flow straightening wall 28c provided in the curved portion 28b of the buttocks cleaning channel 28 in the first embodiment is formed integrally with the nozzle body base material 22a. In the embodiment, only the buttocks cleaning channel 28 is formed integrally with the nozzle body base material 54a, and the rectifying wall 28c is formed integrally with the nozzle lid 54b. Further, in order to improve the accuracy of the position of the rectifying wall 28c, two positioning holes 54c and two positioning bosses 54d are formed in the nozzle body base 54a and are fitted to each other.

  Note that components having the same reference numerals as those in the first embodiment have the same structure and will not be described again.

  As described above, in the present embodiment, it is possible to improve the dimensional accuracy of the rectifying wall 28c by molding the rectifying wall 28c integrally with the nozzle lid 22b, which is a small component, and the nozzle that is a large component. The body base material can be easily molded, and the productivity of both parts can be improved.

(Embodiment 3)
FIG. 23 is a cross-sectional perspective view of the main part of the cover cleaning flow path and the cover cleaning jet outlet for cleaning the outer surface of the nozzle cover according to the third embodiment of the present invention, and FIG. 24 is for cleaning the inner surface of the nozzle cover and the bidet nozzle. The cross-sectional perspective view of the principal part of a nozzle cleaning flow path and a nozzle cleaning jet nozzle is shown.

  This embodiment differs from the first embodiment in that the outer surface of the nozzle cover in the first embodiment is an external cleaning nozzle 33b of the nozzle cleaning nozzle 33 that communicates with the nozzle cleaning channel provided in the nozzle body. The cleaning water sprayed from the nozzle cover 23 is sprayed to the outside of the nozzle cover 23 through the nozzle cleaning opening of the nozzle cover, hits the inner wall of the cleaning enlarged portion 40 of the nozzle guide 19 that covers the nozzle cover 23, and the outer periphery of the nozzle cover 23 by the rebounding cleaning water. Wash the wall and butt washing spout 31. In contrast, the cleaning water ejected from the internal cleaning outlet 33a flows to the side portion of the bidet nozzle portion 26 of the nozzle body 22 and cleans the surface of the bidet nozzle portion 26 and the 32 bidet cleaning ejection ports.

  In the present embodiment, as shown in FIG. 23, a cover cleaning flow path 57 and a cover cleaning jet 58 are provided in the upper part of the upper case 56 of the casing 55, and the cover cleaning jet 58 is a cleaning enlarged portion of the nozzle guide 19. It is open towards 40. The cover cleaning outlet 58 is installed at a position substantially above the central axis of the nozzle guide 19.

  On the other hand, as shown in FIG. 24, the nozzle cleaning flow path 30 provided in the nozzle main body 59 communicates with a nozzle cleaning ejection port 60 opened downward. The ejection direction of the nozzle cleaning ejection port 60 is set in a direction offset with respect to the diameter direction of the nozzle body 59.

  The operation and action of the nozzle device according to the present embodiment configured as described above will be described below.

With the nozzle body 59 stopped at the storage position, the control means starts control of nozzle cleaning. The control means controls the washing water supply means, and the nozzle washing is started by starting water flow through the nozzle washing channel 30 and the cover washing channel 57. The switching of the water flow path and the adjustment of the flow rate are performed by a flow rate adjustment valve of the washing water supply means.

  The cleaning water that has passed through the nozzle cleaning flow path 30 is sprayed downward from a nozzle cleaning outlet 60 provided at the front end of the nozzle body 59 and flows to the side of the bidet nozzle section 26 of the nozzle body 59. The surface of the bidet nozzle part 26 and the 32 bidet cleaning jets 32 and the inner surface of the nozzle cover 23 are cleaned.

  On the other hand, the cleaning water that has passed through the cover cleaning channel 57 is ejected downward from the cover cleaning outlet 58 and hits the outer surface of the nozzle cover 23 between the outer periphery of the nozzle cover 23 and the inner wall of the cleaning enlarged portion 40 of the nozzle guide 19. While flowing through the gap, the outer peripheral wall of the nozzle cover 23, the inner peripheral wall of the nozzle guide, and the buttocks cleaning jet 31 are cleaned.

  Washing water that has been cleaned is discharged from drain ports 39 and 41 provided below the nozzle cover 22 and the nozzle guide 19.

  In the present embodiment, a bidet nozzle portion accommodated in the outer peripheral surface of the nozzle cover and the inside of the nozzle cover is provided by independently providing the flow path and the ejection port used for cleaning the nozzles inside and outside the nozzle cover. Each can be effectively cleaned by an optimal cleaning method, and the nozzle can be used more hygienically.

  In this embodiment, the cleaning water is supplied to the nozzle cleaning channel and the cover cleaning channel at the same time. However, the present invention is not limited to this, and the nozzle cleaning channel and the cover cleaning channel are not limited to this. Water may be passed individually. For example, after the butt cleaning is completed, water is passed only through the cover cleaning flow path to clean the outer peripheral surface of the nozzle cover and the butt cleaning ejection port. It is possible to suppress wasteful use of the cleaning water by cleaning the inner peripheral wall of the section and the nozzle guide.

  As described above, since the nozzle device according to the present invention can realize a self-cleaning mechanism for cleaning the nozzle itself with a small and simple configuration, the present invention can be used for a cleaning device other than the local cleaning. Is also applicable.

The perspective view of the sanitary washing apparatus using the nozzle apparatus in Embodiment 1 of this invention The perspective view which shows the accommodation state of the nozzle apparatus in Embodiment 1 of this invention. The perspective view which removed the upper case of the nozzle apparatus in Embodiment 1 of this invention The perspective view which shows the buttocks washing | cleaning state of the nozzle apparatus in Embodiment 1 of this invention The perspective view which shows the bidet cleaning state of the nozzle apparatus in Embodiment 1 of this invention. Sectional drawing of the principal part of the nozzle unit of the nozzle apparatus in Embodiment 1 of this invention. Sectional drawing of the principal part of the nozzle unit of the nozzle apparatus in Embodiment 1 of this invention. Sectional drawing of the principal part of the nozzle unit of the nozzle apparatus in Embodiment 1 of this invention. The principal part perspective view of the nozzle main body of the nozzle apparatus in Embodiment 1 of this invention. The principal part disassembled perspective view of the nozzle main body of the nozzle apparatus in Embodiment 1 of this invention. The perspective view of the nozzle cover of the nozzle apparatus in Embodiment 1 of this invention The disassembled perspective view of the nozzle main body of the nozzle apparatus in Embodiment 1 of this invention. The longitudinal cross-sectional view which shows the accommodation state of the nozzle apparatus in Embodiment 1 of this invention. The longitudinal cross-sectional view which shows the buttocks cleaning state of the nozzle apparatus in Embodiment 1 of this invention The longitudinal cross-sectional view which shows the bidet cleaning state of the nozzle apparatus in Embodiment 1 of this invention The cross-sectional view which shows the accommodation state of the nozzle apparatus in Embodiment 1 of this invention The cross-sectional view which shows the buttocks washing | cleaning state of the nozzle apparatus in Embodiment 1 of this invention The cross-sectional view which shows the forefront position state of the nozzle apparatus in Embodiment 1 of this invention The perspective view which shows the bidet cleaning state of the nozzle apparatus in Embodiment 1 of this invention Sectional drawing which shows the connection means of the nozzle apparatus in Embodiment 1 of this invention Sectional drawing which shows the connection means of the nozzle apparatus in Embodiment 1 of this invention The principal part disassembled perspective view of the nozzle main body of the nozzle apparatus in Embodiment 2 of this invention. Cross-sectional perspective view of main parts of a nozzle unit of a nozzle device according to Embodiment 3 of the present invention Cross-sectional perspective view of main parts of a nozzle unit of a nozzle device according to Embodiment 3 of the present invention Perspective view of a conventional nozzle device

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Toilet 13 Toilet seat 15 Nozzle device 22, 59 Nozzle main body 23 Nozzle cover 26 Bide nozzle part (protrusion part)
28 Butt washing channel (channel)
29 Bidet cleaning channel (channel)
30 Nozzle cleaning flow path (flow path)
31 Butt washing spout (spout)
32 Bidet washing spout (spout)
33, 60 Nozzle cleaning spout (spout)
36 Ass washing opening (spout opening)
37 Nozzle cleaning opening (spout opening)
57 Cover cleaning channel 58 Cover cleaning outlet

Claims (9)

A nozzle body having a plurality of jets for jetting cleaning water, a flow path for supplying cleaning water to the jets, and a jet opening covering at least a part of the nozzle body and corresponding to at least one jet of the nozzle body A cylindrical nozzle cover, a cover cleaning jet for ejecting cleaning water for cleaning the outer surface of the nozzle cover, a cover cleaning channel for supplying cleaning water to the cover cleaning jet, the nozzle body and the nozzle cover A nozzle guide, wherein the nozzle body has a local cleaning nozzle for cleaning at least a local part of the human body and a nozzle cleaning nozzle for cleaning the outer surface of the nozzle body. . The nozzle device according to claim 1, wherein the cover cleaning outlet is installed at an upper portion of the nozzle guide and jets toward a substantially central axis of the nozzle cover. The nozzle device according to claim 1 or 2, wherein the washing water is simultaneously ejected from the nozzle washing nozzle and the cover washing nozzle. The nozzle device according to claim 1 or 2, wherein the cleaning water is ejected from the nozzle cleaning nozzle and the cover cleaning nozzle at different times. The nozzle body and nozzle cover are slidable between the storage position where almost the entire nozzle body and nozzle cover are stored in the nozzle guide, and the cleaning position where a part of the nozzle body and nozzle cover has advanced from the nozzle guide. The nozzle device according to claim 1, wherein the nozzle body and the nozzle cover are cleaned at the storage position. A cleaning expansion part with a larger inner diameter than other parts is installed at the tip of the nozzle guide, the cleaning expansion part has a depth that covers the cleaning range of the nozzle cover at the storage position, and the cleaning expansion part cleans the outer surface of the nozzle cover The nozzle cleaning apparatus of any one of Claims 1-5 of the structure which can distribute | circulate the washing water to perform sufficiently. The nozzle body has a configuration in which an original portion includes a large-diameter portion having a large outer diameter and a tip portion includes a protruding portion having a small cross-sectional area, and a nozzle cleaning jet nozzle is provided at a front end portion of the large-diameter portion. The nozzle apparatus of any one of -6. The nozzle device according to any one of claims 1 to 7, wherein an ejection direction of the nozzle cleaning ejection port is set in a direction offset with respect to a diameter direction of the nozzle cover. A nozzle device according to claim 1, a cleaning water supply means for supplying cleaning water to the nozzle device, a control means for controlling the nozzle device and the cleaning water supply means, and a toilet seat placed on the upper surface of the toilet bowl. Sanitary washing equipment.