JP5104625B2 - Nozzle device and sanitary washing device using it - Google Patents

Description

  The present invention relates to a nozzle device that ejects cleaning water for cleaning a local part of a human body.

  Conventionally, the nozzle device used for this type of sanitary washing apparatus generally includes two kinds of washing nozzles, ie, an ass washing nozzle for washing the buttocks and a bidet washing nozzle for washing a female part. . These cleaning nozzles are required to have different cleaning power and cleaning feeling. For example, a strong washing feeling with strong pulsation is preferred for ass washing, and a soft washing feeling with little pulsating feeling is preferred for bidet washing.

  However, since these two types of cleaning nozzles are supplied with cleaning water by using the same pulsation pump, it is desired that the bidet cleaning nozzles suppress the pulsation and make the water flow uniform. Therefore, by changing the cross-sectional area in the middle of the flow path of the bidet cleaning nozzle, and especially by flowing into the large diameter flow path from the small diameter flow path, the washing water mixes finely and suppresses pulsation. A soft cleaning feeling is obtained (for example, see Patent Document 1).

  FIG. 33 shows a nozzle device used for bidet cleaning described in Patent Document 1. As shown in FIG. 33, the nozzle body 1 is formed integrally by inserting a resin-made internal jet component 2 into a stainless steel nozzle rod 3, and inside the internal jet component 2, A flow path 5 communicating from the rear end portion to the jet port 4 provided at the front end is provided.

The flow path 5 has a small cross-sectional area at the rear end portion, a small-diameter portion 6a having a small cross-sectional area, a large-diameter portion 7a having a large cross-sectional area, a small-diameter portion 6b, and then a large-diameter portion 7b. The washing water is ejected from the large diameter portion 7 b which is the tip of the flow path 5 through the ejection port 4.
JP 2006-348545 A

  However, in the conventional configuration, in order to partially increase the cross-sectional area of the flow path, the entire nozzle body needs to be thickened. In particular, in a composite cleaning nozzle in which a butt cleaning nozzle portion and a bidet cleaning nozzle portion are integrally provided in one nozzle body, there is a problem that the nozzle body becomes thick and the entire nozzle device becomes large.

  The present invention solves the above-mentioned conventional problems, and can provide a small and comfortable nozzle device by forming a cleaning flow suitable for a plurality of cleaning functions including a soft cleaning flow, which is compatible with a composite nozzle. The purpose is to do.

  In order to solve the conventional problems, a nozzle device of the present invention includes a jet port provided at a tip portion of a nozzle, a flow channel for supplying cleaning water from a rear portion of the nozzle to the jet port, and the flow channel And a buffer tank connected via a communication path branched from the middle of the tank.

  As a result, part of the wash water accompanied by pulsation flows through the flow path and flows into the buffer tank through the communication path, thereby compressing the air remaining in the buffer tank and absorbing the pressure of the wash water. The pulsation of washing water can be reduced and a soft washing flow can be obtained.

As described above, according to the present invention, a small and easy-to-use nozzle device that suppresses pulsation can be provided.

  The first invention is connected via a jet port provided at the tip of the nozzle, a flow path for supplying cleaning water from the rear part of the nozzle to the jet port, and a communication path branched from the middle of the flow path. By providing the buffer tank, the air staying in the buffer tank is compressed and washed by partially passing through the communication path and flowing into the buffer tank while the washing water with pulsation flows through the flow path. The pressure of water can be absorbed, the pulsation of washing water can be reduced, and a soft washing flow can be obtained.

  According to a second aspect of the present invention, in the nozzle device of the first aspect of the invention, the buffer tank has a cylindrical shape extending in the front-rear direction of the nozzle, and a communication path is connected to the intermediate portion of the buffer tank, so that the buffer tank and the flow path Can be arranged almost in parallel in the front-rear direction of the nozzle, it is possible to arrange the buffer tank using the surplus space without increasing the size of the nozzle, and the intermediate part of the buffer tank and the flow path can be arranged. By communicating, the entire space of the buffer tank can be used effectively.

  In particular, in the first or second invention, a third invention includes a plurality of jets and a plurality of flow paths individually communicating with the jets, and a communication path and a buffer tank communicating with at least one flow path With this configuration, it is possible to provide a comfortable nozzle device that has a plurality of cleaning functions with a single nozzle and has an optimal cleaning flow for these cleaning functions.

  According to a fourth aspect of the present invention, in particular, in the third aspect of the present invention, a butt cleaning spout for cleaning the butt, a butt cleaning flow path for supplying cleaning water to the butt cleaning spout, and a female local part are cleaned. And a bidet cleaning flow path for supplying cleaning water to the bidet cleaning spray outlet, and a communication passage communicating with the bidet cleaning flow path and a buffer tank, A jet with a strong cleaning feeling accompanied by pulsation can be ejected, and a jet with a soft washing feeling can be ejected from the bidet washing jet outlet.

  According to a fifth aspect of the invention, in any one of the first to fourth aspects of the invention, the nozzle includes a nozzle body provided with an ejection port, a flow path, a communication path, and a buffer tank, and a cylinder covering at least a part of the nozzle body. The nozzle cover has a jet opening, the jet opening is opposed to the jet outlet, and the cleaning water is jetted through the jet opening, whereby the nozzle body is a nozzle cover. Since it is covered with, it can suppress that the stain | pollution | contamination during washing | cleaning adheres directly to a nozzle main body or a jet nozzle, and can be used hygienically.

  In a sixth aspect of the invention, in particular, in any one of the third to fifth aspects, the nozzle covers a nozzle body including a plurality of ejection ports, a plurality of flow paths, and a buffer tank, and covers at least a part of the nozzle body. The nozzle cover comprises a cylindrical nozzle cover, a connecting means for connecting the nozzle body and the nozzle cover, and includes a nozzle guide for storing the nozzle, and a driving means for driving the nozzle cover to move forward and backward. The drive means is slidable between a storage position in which substantially the whole is stored in the nozzle guide and a plurality of cleaning positions in which a part of the nozzle cover is advanced from the nozzle guide, and the nozzle body is at least one part from the storage position. The nozzle body is interlocked with the nozzle cover via the connecting means, and the nozzle body and the nozzle cover are slidable with respect to each other. To have a single ejection opening, the plurality of slide the nozzle body or the nozzle cover so as to face the ejection opening in the ejection port is for jetting through the spouting openings.

Thereby, even if it is a nozzle main body which has a several jet nozzle, only one jet opening is sufficient and the location which a dirt adheres easily becomes the minimum, Therefore Cleanliness improves. Moreover, since there is no jet opening corresponding to the jet port which is not used, the appearance is neat and a hygienic and clean feeling can be felt. In addition, by driving only the nozzle cover with the driving means, the nozzle body and the nozzle cover are interlocked, and only a part of the nozzle cover can be slid independently in a part of the range. Therefore, it is possible to reduce the size and cost of the apparatus.

  According to a seventh aspect of the present invention, in the sixth aspect of the invention, in the storage state in which the nozzle cover is located at the storage position, the cleaning enlarged portion that sufficiently covers the periphery of the ejection port and the ejection opening, and the nozzle cleaning at the upper portion of the cleaning enlarged portion By providing the ejection port, the nozzle cover can always be kept clean by ejecting washing water from the nozzle washing ejection port to the nozzle cover before and after use of the nozzle.

  In an eighth aspect of the invention, in particular, in any one of the fifth to seventh aspects of the invention, the nozzle cover is made of a metal material having corrosion resistance, so that contaminants are less likely to adhere to the nozzle cover and adhere to the nozzle cover. Objects can be easily removed, and the nozzle cover can be kept clean.

  The ninth aspect of the invention is particularly a nozzle device according to any one of the first to eighth aspects of the invention, cleaning water supply means for supplying cleaning water to the nozzle device, and control for controlling the nozzle device and the cleaning water supply means. By means of the sanitary washing device provided with the toilet seat mounted on the upper surface of the toilet bowl, it becomes possible to communicate the buffer tank installed in the surplus space of the nozzle and the flow path via the branch circuit, which causes pulsation. It is possible to provide a comfortable sanitary washing device having a soft washing flow by suppressing pulsation by a part of the washing water flowing into and out of the buffer tank while flowing through the flow path.

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

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

  As shown in FIG. 1, a sanitary washing apparatus used by being installed on the upper surface of a toilet bowl has a toilet seat 11 and a toilet lid 12 pivotally supported on the front surface of a main body 10 disposed at the rear. The nozzle device 13 of the present invention is installed at the front of the main body 10, and a cleaning water supply means (not shown) provided with water supply means such as a piston pump for supplying cleaning water to the nozzle device 13 inside the main body 10. Further, control means (not shown) for controlling the nozzle device 13 and the washing water supply means are disposed. In the toilet room, a human body detection remote controller 14 for detecting the user's entry and an operation remote controller 15 for operating the sanitary washing device are installed.

  As shown in FIG. 2, the nozzle device 13 has a structure in which a casing 16 molded from a resin material is combined with an upper case 17 and a lower case 18 that can be separated into upper and lower parts. A nozzle guide 19 is formed, and 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 FIGS. As shown, the nozzle unit 21 can move 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 22, and connecting means 24 that pulls the nozzle body 22 with the nozzle cover 23.

  The nozzle cover 23 is configured by integrating a nozzle cover body 25 and a nozzle rack block 26. The nozzle cover main body 25 is a thin stainless steel plate formed in a cylindrical shape, the front end surface is a closed surface, the rear end surface is an open surface, and the nozzle main body 22 can be inserted from the rear end surface. Yes. On the upper surface of the nozzle cover body 25, one ejection opening 29 is provided at a position facing the bidet washing ejection port 27 of the nozzle body 22 in a state where the nozzle body 22 and the nozzle cover 23 are accommodated in the casing 16. A slit-shaped rack opening 30 that fits the nozzle rack block 26 is provided behind the lower surface of the nozzle cover body 25, and a drain port 31 that discharges cleaning water in the nozzle cover body 25 is provided in front of the lower surface. is there. A tooth-shaped rack 26a is formed on the lower surface of the nozzle rack block 26 over substantially the entire length.

  The nozzle body 22 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 nozzle cover 23 to slide smoothly with respect to each other.

  7A is a BB cross section of FIG. 6A, FIG. 7B is a CC cross section of FIG. 6A, and FIG. 8 is a GG cross section of FIG. 7A. FIG. 9 shows a DD cross section of FIG. 6 (b).

  As shown in FIG. 7A, the nozzle body 22 includes three channels, a bidet cleaning channel 34, a buttocks direct-injection cleaning channel 32, a buttocks swirl cleaning channel 33, and a bidet cleaning channel 34. A buffer tank 36 is formed which communicates with the cleaning flow path 34 via the communication path 36a. The washing water is fed from the rear end portion of the upstream nozzle body 22 toward the downstream end portion via the three flow paths.

  The buttocks direct-injection washing channel 32 has a channel of about φ3.0 to 3.5 mm arranged from the rear end of the nozzle body 22 to the tip, and is substantially the same at the tip as shown in FIG. The flow path is bent in the upper surface direction of the nozzle body 22 while maintaining the inner diameter, and communicates with the buttocks washing ejection port 28. The buttocks swirl cleaning flow path 33 is disposed from the rear end portion to the front end portion of the nozzle body 22 and is eccentric with respect to the axial center of the buttocks direct-injection cleaning flow path 32 bent toward the upper surface of the nozzle body 22 at the front end portion. In addition, the cleaning water is communicated so as to impart a swirl component around the axis from the tangential direction.

  The bidet cleaning flow path 34 is disposed with a flow path diameter of about 3.0 to 3.5 mm from the rear end of the nozzle body 22 and passes through an orifice 35 in which the flow path diameter is reduced to about φ1.0 to 1.5 mm. Disposed to the water chamber disposed below the bidet cleaning jet outlet 27 so as to be eccentric with respect to the axis in the discharge direction to the bidet, and imparts a swirl component around the axis to the cleaning water. It is the composition to do.

  Further, as shown in FIGS. 7A and 8, a substantially cylindrical buffer tank 36 of about 3.0 to 3.2 mm whose both ends are closed over substantially the entire length of the nozzle body 22 is a bidet cleaning flow path 34. Are formed almost in parallel. An intermediate portion of the buffer tank 36 and the bidet cleaning flow path 34 communicate with each other via a communication path 36a branched on the upstream side of the orifice 35, and a part of the cleaning water flowing through the bidet cleaning flow path 34 passes through the communication path 36a. It is configured to be able to pass through and enter the buffer tank 36.

Wash water supply ports 32 a, 33 a, and 34 a for supplying wash water are installed at the rear end portions of the buttocks direct-injection washing flow path 32, the buttocks swirl washing flow path 33, and the bidet washing flow path 34. It is communicated from the washing water supply means via the flow path switching valve 37 via a hose (not shown). In addition, regarding the buttocks direct-injection cleaning flow path 32, a T-shaped tube (not shown) is provided between the flow path switching valve 37 and the cleaning water supply port 32a, and an air pump for mixing air into the cleaning water ( (Not shown).

  FIG. 10 shows a top view of the nozzle device, and FIGS. 11 and 12 show cross-sectional views of relevant parts in FIG. 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 than the outer diameter of the nozzle cover body 25 at the rear portion thereof. 25 and the nozzle guide 19 are dimensionally slidable.

  In the vicinity of the tip opening 20 of the nozzle guide 19, a cleaning enlarged portion 38 having a large inner diameter is installed. The depth to cover. A nozzle cleaning jet 39 is opened in the upper lateral tangential direction of the cleaning enlarged portion 38, and a cleaning water supply port 39 a communicating with the nozzle cleaning jet 39 is installed outside the casing 16. It communicates via a hose (not shown). The inner diameter of the cleaning enlarged portion 38 has a dimension that forms a slight gap over the entire outer surface of the nozzle cover body 25, and the cleaning water for cleaning the nozzle can flow through the gap.

  Since the nozzle cleaning spout 39 is configured to spray cleaning water in the lateral tangential direction of the nozzle guide 19, the cleaning water flows so as to swirl around the nozzle cover main body 25, so that the back of the nozzle cover main body 25 can be efficiently cleaned. . Further, a drain port 31 for discharging the cleaning water is provided at the lower part of the cleaning enlargement unit 38.

  Further, a nozzle shutter 40 pivotally supported at the top 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 40 opens upward by being pushed forward at the tip of the nozzle unit 21, and when the nozzle unit 21 is stored in the storage position, the nozzle shutter 40 rotates downward by its own weight. It is configured to move and close.

  13 to 18 are longitudinal sectional views showing the driving state of the nozzle device, FIG. 13 shows the housed state, FIG. 14 shows the bidet cleaning state, and FIG. 15 shows that the nozzle unit contacts the front stopper and the connecting position is 16 shows the state before switching, FIG. 16 shows the state after the nozzle unit contacts the front stopper and the connection position is switched, FIG. 17 shows the buttocks cleaning state, and FIG. 18 shows the nozzle unit against the rear stopper. It shows a state before the contact connection position is switched. 19 to 24 are top views showing the positional relationship between the nozzle unit 21 and the upper case 17 in each driving state of the nozzle device, and FIGS. 25 to 30 are bottom views thereof.

  As shown in the figure, nozzle driving means 41 is installed at the lower part of the casing 16. The nozzle drive means 41 includes a drive motor 42, a worm gear (not shown), a transmission gear 43, and a pinion gear 44. The pinion gear 44 meshes with a rack 26a installed on the lower surface of the nozzle rack block 26 constituting the nozzle cover 23. In place. The rotation of the drive motor 42 is transmitted to the pinion gear 44 at a reduced rotational speed via the worm gear and the transmission gear 43, and the pinion gear 44 rotates so that the nozzle cover 23 having the rack 26a can slide. ing. The drive motor 42 is connected to control means (not shown), and operation is controlled by the control means. A rotation detection sensor 45 that detects the number of rotations of the drive motor 42 is installed at the rear of the drive motor 42.

31 and 32 are enlarged views of the vicinity of the connecting means during bidet cleaning and buttocks cleaning, respectively. The nozzle cover 23 is provided with connecting means 24 for pulling and moving the nozzle body 22 by moving the nozzle cover 23. The connection means 24 includes a connection receiving portion 46 installed on the side surface of the nozzle body 22 and a connection piece 47 installed on the rear end portion of the nozzle cover 23.

  As shown in FIGS. 31 and 32, the connection receiving portion 46 formed of a resin material is installed in parallel with the nozzle body 22 on one side surface of the rear end of the nozzle body 22. The connection receiving portion 46 is provided with a front concave portion 46a and a rear concave portion 46b at two positions with a space in the front and rear directions so as to have the same cross-sectional shape in the circumferential direction. The front concave portion 46a and the rear concave portion 46b The interval is substantially the same as the interval between the bidet cleaning jet 27 and the buttocks cleaning jet 28 of the nozzle body 22.

  The connecting piece 47 is provided on the side surface of the rear end portion of the nozzle cover 23 so as to face the connecting receiving portion 46. The connecting piece 47 is formed of a metal material having elasticity, is held by the connecting piece holding portion 48, and is supported at both ends, and has a structure in which a connecting protrusion 47a is formed at a substantially central portion. 47a has a shape that fits into the front recess 46a and the rear recess 46b of the connection receiving portion 46. When the connecting projection 47a is fitted into the front recessed part 46a or the rear recessed part 46b, the connecting piece 47 and the connection receiving part 46 are connected, and the nozzle body 22 and the nozzle cover 23 can be interlocked.

  The cross-sectional shape of the front and rear recessed portions 46a and 46b is V-shaped, and the connecting projection 47a is V-shaped with a smaller angle than the cross-sectional shape of the front and rear recessed portions 46a and 46b. By adjusting the spring constant so that a load is applied in the direction of the nozzle body 22 even at the time of connection, the vertex of the V-shaped cross section of the front and rear recessed portions 46a and 46b and the vertex of the V-shaped of the coupling protrusion 47a are substantially matched. Deviation caused by the connecting means 24 between the nozzle body 22 and the nozzle cover 23 is minimized.

  Further, the nozzle body 22 is provided with a positioning projection 49, and the positioning projection 49 abuts the front stopper 50 provided at the front portion of the nozzle guide 19 of the casing 16, thereby reducing the sliding range in the forward direction of the nozzle. The rear end of the nozzle body 22 is brought into contact with the nozzle 51 to restrict the sliding range of the nozzle body 22 in the backward direction.

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

  First, in the stowed state where the nozzle shown in FIGS. 13, 19, and 25 is not used, the nozzle cover 23 is located at the rearmost part of the nozzle guide 19, and the nozzle body 22 is also located at the rearmost part of the sliding range. The rear end of the nozzle body 22 is in contact with a rear stopper 51 provided at the rear portion of the nozzle guide 19, and both the nozzle body 22 and the nozzle cover 23 are disposed at the most retracted position. This position is referred to as a storage position. This state is referred to as a stored state. At this time, the connection protrusion 47a of the connection piece 47 is in a state of being fitted into the rear recess 46b of the connection receiving portion 46 as shown in FIG.

  When cleaning is started from the housed state, first, the user operates the operation unit, the control unit starts control, and the rotation of the drive motor 42 is transmitted to the pinion gear 44. The nozzle cover 23 having the meshed rack 26a is moved rearward, but the nozzle cover 23 cannot move rearward any more, so the position in the front-rear direction does not change. With this position as the origin, the subsequent position of the nozzle cover 23 can be controlled while the amount of movement of the nozzle cover 23 is estimated by detecting the rotational speed of the drive motor 42 with the rotational speed detection sensor 45. .

Next, the drive motor 42 is reversely rotated to move the nozzle cover 23 forward. At this time, the nozzle main body 22 moves forward in a state of being pulled and integrated with the nozzle cover 23 by maintaining the state in which the connection protrusion 47a of the connection piece 47 is fitted in the rear recess 46b of the connection receiving portion 46.

  When the user's operation is a bidet cleaning operation, as shown in FIGS. 14, 20, and 26, the nozzle body 22 and the nozzle cover 23 moved forward are in accordance with a preset control sequence. When the rotation speed of the drive motor 42 from the origin state reaches a set value, the drive motor 42 stops. At this time, the positioning protrusion 49 provided on the nozzle main body 22 is in a state of stopping just before contacting the front stopper 50 provided on the front portion of the nozzle guide 19, and this position becomes the standard position for bidet cleaning.

  In this state, the control means controls the washing water supply means, and the bidet washing is started by passing water through the bidet washing flow path 34. The washing water ejected from the bidet washing outlet 27 is ejected through the ejection opening 29. The flow rate is adjusted by the washing water supply means, and the water flow path is switched by the flow path switching valve 37.

  The cleaning water with pulsation supplied from the cleaning water supply means flows into the bidet cleaning flow path 34 through the cleaning water supply port 34a, and the pulsation water pressure is particularly upstream of the orifice 35 of the bidet cleaning flow path 34. The high wash water is prevented from flowing downstream by the resistance of the orifice 35, and a part of the wash water flows into the buffer tank 36 through the communication path 36a. Since both ends of the buffer tank 36 are closed, air is retained, and the air is compressed by the flowing wash water, and the pressure of the wash water is absorbed, thereby reducing the pulsation of the wash water.

  Next, the cleaning water passes through the orifice 35 having a small channel diameter and flows again into the downstream portion of the bidet cleaning channel having a large channel diameter. However, since the channel diameter becomes large downstream of the orifice 35, a vortex flow is generated in the cleaning water. By being stirred, the pulsation feeling of the washing water supply means can be further reduced, and a softer feeling of washing can be provided.

  At this time, the buttocks cleaning jet outlet 28 is covered with the nozzle cover body 25, and since the sewage generated by the bidet cleaning is not directly applied, it is kept clean.

  If the sealing property of the flow path switching valve 37 is insufficient, the flow rate switching between the buttocks direct-injection cleaning flow path 32, the buttocks swirl cleaning flow path 33, and the bidet cleaning flow path 34 is not performed completely and the bidet is not performed. A minute amount of water is ejected from the buttocks washing spout 28 even during cleaning, but since the upper part of the buttocks washing spout 28 is covered with the nozzle cover body 25, the water is directed toward the user. There is no fear of being ejected.

  When the drive motor 42 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.

  When the bidet cleaning is stopped, the drive motor 42 rotates in the reverse direction, and the nozzle body 22 and the nozzle cover 23 move rearward and return to the original storage position. Next, when the butt cleaning is selected, after confirming the origin position of the nozzle cover 23 as in the bidet cleaning, the drive motor 42 rotates to move forward, and the nozzle body 22 and the nozzle cover 23 move forward. This is the same as that for bidet cleaning, but in the case of butt cleaning, the nozzle cover 23 is moved further forward beyond the bidet cleaning position.

At this time, as shown in FIGS. 15, 21, and 27, the positioning projection 49 provided on the nozzle body 22 contacts the front stopper 50 provided on the front portion of the nozzle guide 19, and the nozzle body 22 moves further forward. To regulate. When the nozzle cover 23 is further moved forward, the connecting projection 47a of the connecting piece 47 is detached from the rear recessed portion 46b. In order to enable such an operation, it is a condition that the drive torque of the drive motor 42 that moves the nozzle in the front-rear direction is larger than the load value required to remove the connection protrusion 47a.

  The nozzle main body 22 and the nozzle cover 23 are separated from each other because the connecting protrusion 47a is disengaged from the rear recessed portion 46b, and only the nozzle cover 23 is in front of the nozzle main body 22 whose movement is restricted by the front stopper 50. The connecting protrusion 47a gets stuck in the front recessed portion 46a. When the connecting projection 47a is completely inserted into the front recessed portion 46a, the ejection opening 29 faces the buttocks cleaning ejection port 28 as shown in FIGS. At this point, the upper cover 17 is provided with a nozzle cover front stopper 52 that contacts the nozzle cover 23 without contacting the nozzle body 22 so that the forward movement of the nozzle cover 23 is completed. The position control based on the number of rotations of the drive motor 42 may be performed in advance by a control sequence without providing the nozzle cover front stopper 52.

  The drive motor 42 is moved backward to the standard position for washing the butt by rotating the drive motor 42 slightly in the reverse direction with the coupling protrusion 47a fitted in the front recess 46a in this way. 42 is stopped. This state is the standard position for butt washing shown in FIG.

  When the nozzle cover 23 arrives at the standard position for the buttocks cleaning, the control means controls the washing water supply means and starts water flow into the buttocks direct-injection washing flow path 32 or the buttocks swirl washing flow path 33. The ass cleaning is started. The washing water ejected from the buttocks washing ejection port 28 passes through and is ejected without directly contacting the ejection opening 29. The flow rate is adjusted by the washing water supply means, and the water flow path is switched by the flow path switching valve 37. The ratio of the flow rates flowing to the buttocks direct-injection cleaning channel 32 and the buttocks swirl cleaning channel 33 can be adjusted by the opening degree of the channel switching valve 37.

  When the cleaning water is supplied only to the buttocks direct-injection cleaning flow path 32 by switching the flow path switching valve 37 by the control unit, a concentrated cleaning water flow substantially equal to the diameter of the buttocks cleaning jet outlet 28 is ejected. It can be washed with strong washing water at a pinpoint. On the other hand, when the cleaning water is supplied only to the buttocks swirl cleaning flow path 33, a swirl component around the axis is imparted to the cleaning water, and thus the cleaning water flow diffused from the buttocks cleaning spout 28 is ejected. Can be washed with soft wash water. Further, when cleaning water is supplied to the buttocks direct-injection cleaning flow path 32 and the buttocks swirl cleaning flow path 33 at a predetermined flow rate ratio, the shape of the buttocks cleaning water flow is shaped according to the flow rate ratio from the concentrated state to the diffusion state. Can be controlled.

  Further, when water is passed through the buttocks direct-injection washing flow path 32, the compressed air can be mixed into the washing water by driving the air pump. When washing water mixed with air is ejected from the butt washing outlet 28, the air expands, so that the washing water is given kinetic energy and gathers into a lump to land on the anus. Give rise to Also, by changing the frequency of the pressure fluctuation of the washing water by the washing water supply means and the frequency of the diaphragm of the air pump, the mixing timing of the air becomes irregular, and the washing water that reaches the anus is irregular and intermittent It becomes a cleaning that feels volume compared to intermittent cleaning.

  At this time, the upper part of the bidet washing outlet 27 is covered with the nozzle cover body 25, and the sewage generated by the butt washing does not directly reach the bidet washing outlet 27, so the bidet washing outlet 27 is clean. Kept.

  If the sealing performance of the flow rate switching valve 37 is insufficient, the flow rate of the buttocks direct-injection cleaning channel 32, buttocks swirl cleaning channel 33, and bidet cleaning channel 34 is not completely switched and the buttocks are cleaned. A very small amount of water is also ejected from the bidet washing outlet 27, but the upper part of the bidet washing outlet 27 is covered with the nozzle cover body 25, so that the water may be ejected outside the nozzle. There is no.

  When the drive motor 42 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 clean a wider area of the human body.

  When stopping the buttocks cleaning, the drive motor 42 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 rear end of the nozzle body 22 abuts on a rear stopper 51 provided at the rear portion of the nozzle guide 19, and the nozzle body 22 is restricted from moving further. When the nozzle cover 23 is further moved rearward, the connection protrusion 47a of the connection piece 47 is detached from the front recess 46a. In order to enable such an operation, it is a condition that the driving torque of the driving motor 42 that moves the nozzle cover 23 in the front-rear direction is larger than the load value required for releasing the connecting protrusion 47a.

  As the connecting projection 47a is disengaged from the front recess 46a, the nozzle main body 22 and the nozzle cover 23 are separated from each other, and only the nozzle cover 23 is behind the nozzle main body 22 whose movement is restricted by the rear stopper 51. As a result of the movement, the connecting projection 47a fits into the rear recess 46b. When the connecting projection 47a is completely fitted into the rear recessed portion 46b, the ejection opening 29 is in a state of facing the bidet cleaning ejection port 27. At this time, the nozzle cover 23 abuts on the nozzle cover rear stopper 53 of the nozzle guide 19 and cannot move further rearward. Note that the rotation of the drive motor 42 may be stopped by contacting the nozzle cover rear stopper 53, and the rotation of the drive motor 42 may be stopped by position control based on the rotation speed of the drive motor 42 based on a preset control sequence. It may be stopped.

  When the butt cleaning is completed and the nozzle cover 23 is retracted and the rear end of the nozzle body 22 comes into contact with the rear stopper 51 and stops, or the bidet cleaning is completed, the nozzle cover 23 is retracted and the rear end of the nozzle body 22 is rearward. At the time when it comes into contact with the stopper 51 and stops, the control means starts control of nozzle cleaning. The control means controls the washing water supply means, and starts nozzle cleaning by starting water flow to the washing water supply port 39a. The flow rate is adjusted by the washing water supply means, and the water flow path is switched by the flow path switching valve 37.

  Since the cleaning water ejected from the nozzle cleaning outlet 39 has the nozzle cleaning outlet 39 opened in the laterally tangential direction of the upper portion of the inner diameter of the cleaning enlarged portion 38, the ejected cleaning water flows along the inner wall of the nozzle guide 19 to the nozzle cover. It becomes a swirl flow that swirls and circulates in the circumferential direction through the gap with the main body 25, and dirt on the outer peripheral wall of the nozzle cover 23 and the bidet cleaning jet outlet 27 can be effectively removed. In addition, it is good also as a structure provided with two or more nozzle washing water jet nozzles 37 in the position facing the jet opening 29 substantially. By doing so, the vicinity of the ejection opening 29 where dirt can be relatively easily stored can be intensively cleaned, and a cleaner local cleaning can be realized. Further, by reducing the diameter of the nozzle cleaning water ejection port 39, a water flow with a higher water pressure is ejected, and the cleaning power is improved. Further, by increasing the number of holes, it is possible to effectively clean a wide area.

  As described above, in the present embodiment, the nozzle main body 22 including the buttocks cleaning spout 28 and the bidet cleaning spout 27 that eject the cleaning water, and the flow path that supplies the cleaning water to the respective spouts, A cylindrical nozzle cover 23 that covers the nozzle body 22 and has one ejection opening 29, a connecting means 24 that connects the nozzle body 22 and the nozzle cover 23, and a nozzle guide 19 that houses the nozzle body 22 and the nozzle cover 23 And nozzle drive means 41 for driving advancement and retraction of the nozzle body 22, the nozzle body 22 and the nozzle cover 23 are configured to be slidable with respect to each other, and the nozzle cover 23 so that the ejection opening 29 faces the ejection port to be used. , And the nozzle body 22 having a plurality of jet outlets requires only one jet opening 29, and the dirt is contaminated. Since adhesion tends portion is minimized, cleanliness is improved. Further, since the unused outlet is covered with the nozzle cover 23, the nozzle main body 22 is not contaminated with the cleaning water soiled by the cleaning, which is hygienic.

  In addition, since the ejection opening 29 is the minimum necessary, the appearance is neat and the nozzle cover 23 has a simple configuration, so that the cost can be reduced.

  In addition, since the nozzle body 22 and the nozzle cover 23 are interlocked via the connecting means 24 so that the relative positions can be switched, one nozzle driving means 41 can select the two driving targets respectively. The device can be driven to a position, and the device can be reduced in size and cost.

  In addition, the buffer tank 36 is disposed in the nozzle body 22 and communicated via the bidet cleaning flow path 34 and the communication path 36 a, so that cleaning water with pulsation flows into the buffer tank 36 and enters the buffer tank 36. The staying air is compressed and the pressure of the cleaning water is absorbed, so that the pulsation of the cleaning water is reduced, a soft cleaning feeling is provided, and a comfortable bidet cleaning can be provided.

  The effect of reducing the pulsation of the washing water by the buffer tank 36 is brought about by the configuration of the bidet washing flow path 34, the buffer tank 36, and the communication path 36a described in the present embodiment. It is not influenced by other configurations such as the cleaning flow path 32, the buttocks swirl cleaning flow path 33, the sliding structure of the nozzle body and the nozzle cover, and the connection drive structure of the nozzle cover and the nozzle body.

  Therefore, for example, even when the configuration of the bidet cleaning flow path, the communication path, the buffer tank, etc. related to the bidet cleaning described in the present embodiment is implemented in an independent nozzle device having only the bidet cleaning function, the present embodiment The same effect can be obtained.

  In the present embodiment, the nozzle drive means 41 employs a transmission mechanism via a gear including a drive motor 42, a worm gear, a transmission gear 43, and a pinion gear 44. However, the present invention is not limited to this. A transmission mechanism such as a chain may be used.

  In the present embodiment, the nozzle cover body 25 is made of stainless steel, but the material is not limited to this, and may be other metal materials having corrosion resistance, inorganic materials such as ceramics, or resin materials. Cleanliness can be further improved by using an antibacterial or antibacterial or water repellent performance added to the above material.

  In the present embodiment, the connecting piece of the connecting means 24 is formed of an elastic metal material. However, the present invention is not limited to this, and an elastic resin material may be used. When the resin material is used, the connecting member of the connecting means 24 can be integrally molded and can be manufactured at low cost.

  Further, in the present embodiment, three channels of the buttocks direct-injection cleaning channel 32, the buttocks swirl cleaning channel 33, and the bidet cleaning channel 34 are formed as cleaning channels. A nozzle cleaning flow path may be provided in place of the nozzle cleaning ejection port 39 installed in the nozzle guide 19 of the casing 16, or a dry air flow path for blowing dry air to dry a human body wet by cleaning may be provided.

  In the present embodiment, the rack 26a that fits the pinion gear 44 is formed on the nozzle rack block 26 that constitutes the nozzle cover 23, the nozzle cover 23 is driven, and the connected nozzle body 22 is pulled. Although it is a structure, it is good also as a structure which comprises a rack in the nozzle body 22 conversely, the nozzle body 22 drives, and the connected nozzle cover 23 is pulled.

  Further, in the present embodiment, the ejection opening 29 opened in the nozzle cover 23 is provided at a position facing the bidet washing ejection port 27 when the nozzle body 22 and the nozzle cover 23 are accommodated. You may provide in the position facing 28. Moreover, the connection receiving part in the connection means 24 may be increased to three places, and you may provide in the position which does not oppose any washing | cleaning jet nozzle. In this way, at the time of storage, all the cleaning jets are covered with the nozzle cover, and dust represented by toilet paper waste does not enter the cleaning port, and can be kept clean.

  Further, in the present embodiment, the nozzle cleaning nozzles are opened in the upper lateral tangential direction of the cleaning enlarged portion, but a plurality of nozzle cleaning nozzles are provided at positions substantially opposite to the nozzle openings when the nozzle cover is stored. It may be opened. By carrying out like this, the jet opening from which the local wash water jets can be concentrated and washed.

  Also, in this embodiment, the sequence is such that cleaning is started after confirming the origin position every time, but the origin position is confirmed only when the main body is turned on, and the position information is stored in the control means. May be. By doing this, the time from when the cleaning start signal is received until the nozzle is actually driven and cleaned is shortened. In addition, a predetermined timing may be set in the control unit, and the origin position may be periodically confirmed according to the timing. As a result, the time until the start of cleaning is shortened, but is automatically corrected when the origin position of the nozzle is deviated.

  As described above, since the nozzle device according to the present invention can obtain a soft cleaning flow with reduced pulsation, it can be applied to various cleaning devices other than local cleaning.

The perspective view of the sanitary washing apparatus using the nozzle apparatus in Embodiment 1 of this invention The perspective view in the accommodation state of the nozzle device in Embodiment 1 The perspective view of the state which removed the upper case of the nozzle apparatus in Embodiment 1 The perspective view which shows the bidet cleaning state of the nozzle apparatus in Embodiment 1 The perspective view which shows the buttocks washing | cleaning state of the nozzle apparatus in Embodiment 1 (A) is a top view of the nozzle unit, (b) is a cross-sectional view along AA of (a). (A) is BB sectional drawing of Fig.6 (a), (b) is CC sectional drawing of Fig.6 (a). GG sectional view of FIG. DD sectional view of FIG. Top view of the nozzle device in the first embodiment EE sectional view of FIG. FF sectional view of FIG. Sectional drawing which shows the accommodation state of the nozzle apparatus in Embodiment 1 Sectional drawing which shows the bidet cleaning state of the nozzle apparatus in Embodiment 1 Sectional drawing which shows the state before the connection position switching to the expansion | extension direction of the nozzle apparatus in Embodiment 1 Sectional drawing which shows the state after the connection position switching to the expansion | extension direction of the nozzle apparatus in Embodiment 1 Sectional drawing which shows the buttocks washing | cleaning state of the nozzle apparatus in Embodiment 1 The longitudinal cross-sectional view which shows the state before the connection position switching to the reverse direction of the nozzle apparatus in Embodiment 1 Top view showing the storage state of the nozzle unit in the first embodiment The top view which shows the bidet cleaning state of the nozzle unit in Embodiment 1 The top view which shows the state before the connection position switching to the expansion | extension direction of the nozzle unit in the same Embodiment 1 The top view which shows the state after the connection position switching to the expansion | extension direction of the nozzle unit in the same Embodiment 1 The top view which shows the buttocks washing | cleaning state of the nozzle unit in Embodiment 1 The top view which shows the state before the connection position switching to the reverse direction of the nozzle unit in the same Embodiment 1 The bottom view which shows the accommodation state of the nozzle unit in Embodiment 1 The bottom view which shows the bidet cleaning state of the nozzle unit in the first embodiment The bottom view which shows the state before the connection position switching to the expansion | extension direction of the nozzle unit in the same Embodiment 1 The bottom view which shows the state after the connection position switching to the expansion | extension direction of the nozzle unit in the same Embodiment 1 The bottom view which shows the buttocks washing | cleaning state of the nozzle unit in Embodiment 1 The bottom view which shows the state before the connection position switching to the reverse direction of the nozzle unit in Embodiment 1 The top view which shows the detail of the connection means at the time of the bidet washing | cleaning in Embodiment 1 The top view which shows the detail of the connection means at the time of the bidet washing | cleaning in Embodiment 1 Sectional view showing a conventional nozzle device

Explanation of symbols

13 Nozzle device 19 Nozzle guide 21 Nozzle unit (nozzle)
22 Nozzle body 23 Nozzle cover 24 Connecting means 27 Bidet cleaning outlet (outlet)
28 Butt wash spout (spout)
29 Ejection opening 32 Butt direct jet cleaning flow path (flow path)
33 Butt swirl cleaning channel (channel)
34 Bidet washing channel (channel)
36 buffer tank 36a communication path 38 cleaning enlarged portion 39 nozzle cleaning outlet 41 nozzle driving means (driving means)

Claims (9)

A jet port provided at the tip of the nozzle, a flow path for supplying cleaning water from the rear part of the nozzle to the jet port, and a buffer tank connected via a communication path branched from the middle of the flow path Nozzle device. The nozzle device according to claim 1, wherein the buffer tank has a cylindrical shape extending in the front-rear direction of the nozzle, and a communication path is connected to an intermediate portion of the buffer tank. 3. The nozzle device according to claim 1, comprising a plurality of ejection openings, a plurality of flow paths individually communicating with the ejection openings, and a communication path communicating with at least one flow path and a buffer tank. An ass cleaning outlet for cleaning the buttocks, an ass cleaning channel for supplying cleaning water to the ass cleaning outlet, a bidet cleaning outlet for cleaning a female part, and the bidet cleaning outlet The nozzle device according to claim 3, further comprising a bidet cleaning flow path for supplying cleaning water, and a communication path communicating with the bidet cleaning flow path and a buffer tank. The nozzle is composed of a nozzle body including a jet port, a flow path, a communication path, and a buffer tank, and a cylindrical nozzle cover that covers at least a part of the nozzle body, and the nozzle cover has a jet opening. The nozzle device according to any one of claims 1 to 4, wherein the ejection opening is opposed to the ejection port, and cleaning water is ejected through the ejection opening. The nozzle includes a nozzle body including a plurality of ejection ports, a plurality of flow paths, and a buffer tank, a cylindrical nozzle cover that covers at least a part of the nozzle body, and a connecting unit that connects the nozzle body and the nozzle cover. A nozzle guide for storing the nozzle, and a driving means for driving advancement and retraction of the nozzle cover, and a storage position in which substantially the entire nozzle cover is stored in the nozzle guide, and a part of the nozzle cover. The drive means can slide between a plurality of cleaning positions advanced from the nozzle guide, and the nozzle body is interlocked with the nozzle cover via the connecting means between the storage position and at least one cleaning position, The nozzle body and the nozzle cover are configured to be slidable with each other, the nozzle cover has one ejection opening, and the plurality of ejection openings have the ejection opening. Slide the nozzle body or the nozzle cover so as to face the nozzle device according to any one of claims 3-5 for ejecting through the ejection opening. The nozzle device according to claim 6, further comprising: a cleaning enlarged portion that sufficiently covers a periphery of the ejection port and the ejection opening in a stored state in which the nozzle cover is located at the storage position; and a nozzle cleaning jet port disposed above the cleaning enlarged portion. . The nozzle device according to any one of claims 5 to 7, wherein the nozzle cover is formed of a metal material having corrosion resistance. A nozzle device according to any one of claims 1 to 8, 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 Sanitary washing device with toilet seat placed on top.