Sanitary washing device

Abstract

To provide a sanitary washing device capable of stably discharging water from a nozzle unit.SOLUTION: A sanitary washing device has a casing and a nozzle unit moving forward and backward between the casing and a toilet bowl. The nozzle unit is curved so as to be convex upward and moves forward and backward along an arcuate trajectory. The nozzle unit has a first flow channel allowing water to flow and a second flow channel connected to the first flow channel. Direction of water flow in the second flow channel is different from that in the first flow channel in a longer direction of the nozzle unit.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] SUMMARY OF THE DISCLOSURE Aspects of the present invention generally relate to sanitary washing devices. [Background technology]

[0002] There is known a sanitary washing device equipped with a nozzle that advances into a toilet bowl when washing private parts. One such nozzle is known to be curved and moves back and forth along an arc-shaped path (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6551717 Summary of the Invention [Problem to be solved by the invention]

[0004] If the flow path in the nozzle is curved significantly, it may be necessary to reduce the area of ​​the flow path when manufacturing the nozzle in order to remove the pin from the mold. Also, if the area of ​​the flow path is reduced, the water discharge from the nozzle may become unstable.

[0005] The aspects of the present invention have been made based on the recognition of such problems, and have an object to provide a sanitary washing device that can stably eject water from a nozzle. [Means for solving the problem]

[0006] A first invention is a sanitary washing device comprising a casing and a nozzle unit that moves back and forth between the casing and a toilet bowl, the nozzle unit being curved so as to be convex upward and moving back and forth along an arc-shaped trajectory, the nozzle unit having a first flow path through which water flows and a second flow path connected to the first flow path, and the second flow path having a different direction of water flow than the first flow path in the longitudinal direction of the nozzle unit.

[0007] According to this sanitary washing device, the nozzle unit is curved so as to be convex upward, and advances and retreats along an arc-shaped trajectory. This allows the height dimension of the casing to be as low as possible, improving the design of the sanitary washing device. The nozzle unit also has a first flow path through which water flows, and a second flow path connected to the first flow path. The second flow path has a different water flow direction from the first flow path in the longitudinal direction of the nozzle unit. This allows the nozzle unit to secure a flow path area and perform stable water discharge by gradually changing the water flow direction using the first flow path and the second flow path.

[0008] A second invention is the sanitary washing device according to the first invention, characterized in that the first flow path and the second flow path each extend linearly.

[0009] According to this sanitary washing device, the pins of the mold can be easily removed from the first flow path and the second flow path, so that the nozzle unit can be manufactured efficiently. Also, since the flow path areas of the first flow path and the second flow path can be secured, water can be discharged stably even if the nozzle unit is curved.

[0010] A third invention is a sanitary washing device according to the first or second invention, characterized in that the nozzle unit has a nozzle body and a nozzle cover that covers the nozzle body and is curved so as to be convex upward, the nozzle body has a first tubular portion having the first flow path and a second tubular portion having the second flow path, and the outer surfaces of the first tubular portion and the second tubular portion each extend linearly in the longitudinal direction.

[0011] With this sanitary washing device, a consistent thickness can be ensured between the first and second flow paths and the outer surfaces of the first and second cylindrical portions, compared to when the first and second cylindrical portions are curved, for example, so that water can be discharged stably while ensuring the durability of the nozzle body.

[0012] A fourth invention is the sanitary washing device according to the third invention, characterized in that the second cylindrical portion is connected to the front of the first cylindrical portion.

[0013] According to this sanitary washing device, the durability of the nozzle body can be improved compared to, for example, a multi-stage nozzle unit in which the second cylindrical portion protrudes from the inside of the first cylindrical portion.

[0014] A fifth invention is a sanitary washing device according to the first or second invention, characterized in that an angle between the first flow path and the horizontal is smaller than an angle between the second flow path and the horizontal.

[0015] According to this sanitary washing device, the tubular portion in which the flow path is formed can be formed to fit the nozzle cover that is curved to be convex upward while maintaining a constant thickness. Therefore, compared to when the flow path is curved upward, physical interference between the nozzle cover and the tubular portion is suppressed, and the nozzle body can be made compact.

[0016] A sixth invention is a sanitary washing device according to the fifth invention, characterized in that the nozzle unit has a first tubular portion having the first flow path, a second tubular portion having the second flow path, and a nozzle head connected to the front of the second tubular portion and having a third flow path, and the angle formed by the third flow path and the horizontal is greater than the angle formed by the second flow path and the horizontal.

[0017] According to this sanitary washing device, the first cylindrical portion, the second cylindrical portion, and the nozzle head can be made more compact, making it easier to store the first cylindrical portion, the second cylindrical portion, and the nozzle head in the nozzle cover.

[0018] A seventh invention is a sanitary washing device according to the sixth invention, characterized in that the length of the first tubular portion, the length of the second tubular portion, and the length of the nozzle head are the same.

[0019] This sanitary washing device allows the change in the inclination angle of the first and second tubular parts and the nozzle head to be constant, thereby reducing the effect of pressure loss caused by connecting multiple flow paths, and allowing for more stable water discharge. Effect of the Invention

[0020] According to an aspect of the present invention, a sanitary washing device is provided that can stably eject water from a nozzle unit. [Brief description of the drawings]

[0021] [Figure 1] 1 is a perspective view showing a toilet apparatus equipped with a sanitary washing device according to an embodiment. [Diagram 2] 2 is a block diagram showing the configuration of the main parts of the sanitary washing device. FIG. [Diagram 3] 4 is a cross-sectional view of the local cleaning device in the casing as viewed from the side. FIG. [Figure 4] 13 is a side view showing a state in which the cover portion is removed from the main body portion of the support portion. FIG. [Diagram 5]5 is a side view showing a state in which a gear and a belt are removed from the support part in FIG. 4. FIG. [Figure 6] FIG. 2 is a perspective view of the private parts washing device as seen obliquely from behind. [Figure 7] FIG. 4 is a side view showing the nozzle unit alone. [Figure 8] 8 is a side view showing a state in which a nozzle cover is removed from the nozzle unit in FIG. 7. FIG. [Figure 9] FIG. 4 is a perspective view showing a state in which the nozzle head is removed from the second cylindrical portion. [Figure 10] FIG. 4 is a cross-sectional view showing a flow path provided inside the nozzle body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same components are designated by the same reference numerals and detailed description thereof will be omitted as appropriate. FIG. 1 is a perspective view showing a toilet apparatus equipped with a sanitary washing device according to an embodiment. As shown in Fig. 1, a toilet device 300 according to an embodiment includes a sanitary washing device 100 and a Western-style seated toilet bowl (hereinafter, for convenience of explanation, simply referred to as a "toilet bowl") 200. The sanitary washing device 100 is provided above the toilet bowl 200. The sanitary washing device 100 includes a private parts washing device 30 for washing the private parts of a user seated on the toilet seat 20.

[0023] The casing 10 has a case plate 11 and a case cover 12. The case plate 11 forms the bottom of the casing 10. The case plate 11 is placed on the rear of the toilet bowl 200. The case cover 12 is provided on top of the case plate 11 and covers the upper part of the case plate 11. The toilet seat 20 and the toilet lid 25 are rotatably supported on the case cover 12. The case cover 12 also has an openable and closable lid portion 12a in front of the nozzle unit 60, which will be described later. The lid portion 12a is pressed open when the nozzle unit 60 advances into the toilet bowl 200.

[0024] The casing 10 houses the private parts cleansing device 30 inside the space surrounded by the case plate 11 and the case cover 12. The casing 10 also houses functional parts such as an opening / closing unit that controls the opening and closing operation of the toilet seat 20 and the toilet lid 25, a toilet seat heating unit that controls the temperature of the toilet seat 20, and a communication unit that can communicate with the operation unit 140, etc.

[0025] In this specification, "upper," "lower," "front," "rear," "right," and "left" refer to directions seen by a user sitting on toilet seat 20 with their back to toilet lid 25, as shown in FIG.

[0026] FIG. 2 is a block diagram showing the configuration of the main parts of the sanitary washing device. FIG. 2 shows the main configurations of the water channel system and electrical system of the sanitary washing device 100.

[0027] 2, the sanitary washing device 100 has a pipe 110. The pipe 110 extends from a water supply source 500, such as a water main or a water tank, to the nozzle unit 60. The pipe 110 guides water supplied from the water supply source 500 to the nozzle unit 60.

[0028] A solenoid valve 120 is provided upstream of the pipeline 110. The solenoid valve 120 is an openable and closable electromagnetic valve, and controls the supply of water based on a command from a control unit 130 provided inside the casing 10. In other words, the solenoid valve 120 opens and closes the pipeline 110. By opening the solenoid valve 120, water supplied from the water supply source 500 flows into the pipeline 110.

[0029] A pressure regulating valve 121 is provided downstream of the solenoid valve 120. When the water supply pressure is high, the pressure regulating valve 121 adjusts the pressure in the pipeline 110 to a predetermined pressure range. A check valve 122 is provided downstream of the pressure regulating valve 121. The check valve 122 prevents water from flowing back upstream of the check valve 122 when, for example, the pressure in the pipeline 110 drops.

[0030] A heat exchanger unit 123 (heating section) is provided downstream of the check valve 122. The heat exchanger unit 123 has a heater and heats the water supplied from the water supply source 500 to a specified temperature. That is, the heat exchanger unit 123 generates hot water.

[0031] The heat exchanger unit 123 is an instantaneous heating type (instantaneous type) heat exchanger using, for example, a ceramic heater. The instantaneous heating type heat exchanger can heat water to a specified temperature in a short time compared to a hot water storage heating type heat exchanger using a hot water storage tank. The heat exchanger unit 123 is not limited to an instantaneous heating type heat exchanger, and may be a hot water storage heating type heat exchanger. The heating section is not limited to a heat exchanger, and may be one using another heating method, such as one using microwave heating.

[0032] The heat exchanger unit 123 is connected to the control unit 130. The control unit 130 controls the heat exchanger unit 123 in response to an operation of the operation unit 140 by a user, for example, to raise the temperature of the water to a temperature set by the operation unit 140.

[0033] A flow rate sensor 124 is provided downstream of the heat exchanger unit 123. The flow rate sensor 124 detects the flow rate of water discharged from the heat exchanger unit 123. In other words, the flow rate sensor 124 detects the flow rate of water flowing through the pipe 110. The flow rate sensor 124 is connected to the control unit 130. The flow rate sensor 124 inputs the detection result of the flow rate to the control unit 130.

[0034] A vacuum breaker (VB) 125 is provided downstream of the flow sensor 124. The vacuum breaker 125 has, for example, a flow path for flowing water, an intake port for taking air into the flow path, and a valve mechanism for opening and closing the intake port. For example, the valve mechanism closes the intake port when water is flowing in the flow path, and opens the intake port when the water flow stops, taking air into the flow path. In other words, the vacuum breaker 125 takes air into the pipeline 110 when there is no water flow in the pipeline 110. For example, a float valve is used as the valve mechanism.

[0035] The vacuum breaker 125 takes in air into the pipeline 110, thereby promoting drainage of water, for example, in a portion downstream of the vacuum breaker 125. The vacuum breaker 125 promotes drainage of water, for example, from the nozzle unit 60. In this way, the vacuum breaker 125 drains water from the nozzle unit 60 and takes in air into the nozzle unit 60, thereby preventing, for example, cleaning water in the nozzle unit 60 from flowing back toward the water supply source 500 (clean water).

[0036] An electrolytic cell unit 126 is provided downstream of the vacuum breaker 125. The electrolytic cell unit 126 generates a liquid containing hypochlorous acid (functional water) from the tap water by electrolyzing the tap water flowing therein. The electrolytic cell unit 126 is connected to the control unit 130. The electrolytic cell unit 126 generates functional water based on the control by the control unit 130.

[0037] The functional water generated in the electrolytic cell unit 126 may be a solution containing metal ions such as silver ions or copper ions. Alternatively, the functional water generated in the electrolytic cell unit 126 may be a solution containing electrolytic chlorine or ozone. Alternatively, the functional water generated in the electrolytic cell unit 126 may be acidic water or alkaline water.

[0038] A pressure modulation unit 127 is provided downstream of the electrolytic cell unit 126. The pressure modulation unit 127 imparts pulsation or acceleration to the flow of water in the pipe 110, and imparts pulsation to the water discharged from the rear cleansing water outlet 83b, the soft cleansing water outlet 83c, and the bidet cleansing water outlet 83d of the nozzle body 80 and the water outlet of the nozzle cleaning unit 44. That is, the pressure modulation unit 127 varies the flow state of the water flowing in the pipe 110. The pressure modulation unit 127 is connected to the control unit 130. The pressure modulation unit 127 varies the flow state of the water based on the control by the control unit 130. The pressure modulation unit 127 varies the pressure of the water in the pipe 110.

[0039] A flow adjustment unit 70 is provided downstream of the pressure modulation section 127. The flow adjustment unit 70 has a flow rate adjustment section 71 and a flow path switching section 72. The flow rate adjustment section 71 adjusts the water pressure (flow rate). The flow path switching section 72 is provided downstream of the flow rate adjustment section 71. The flow path switching section 72 opens, closes, or switches the water supply to the nozzle body 80 and the nozzle cleaning section 44. The flow rate adjustment section 71 and the flow path switching section 72 may be provided separately. The flow rate adjustment section 71 and the flow path switching section 72 are connected to the control section 130. The operation of the flow rate adjustment section 71 and the flow path switching section 72 is controlled by the control section 130.

[0040] The flow adjustment unit 70 constitutes a part of the nozzle unit 60. The flow adjustment unit 70 is connected to the rear surface of the nozzle body 80. The flow adjustment unit 70 has a case 73 that houses a flow rate adjuster 71 and a flow path switching unit 72. The case 73 is also provided with a protrusion 73a and a recess 73b that are slidably held by a support part 40 described later.

[0041] A posterior cleansing flow path 80a, a soft cleansing flow path 80b, a bidet cleansing flow path 80c, a first bowl jetting flow path 80d, a second bowl jetting flow path 80e, and a surface cleansing flow path 75 are provided downstream of the flow path switching unit 72. The posterior cleansing flow path 80a, the soft cleansing flow path 80b, the bidet cleansing flow path 80c, the first bowl jetting flow path 80d, and the second bowl jetting flow path 80e are provided inside the nozzle body 80. The surface cleansing flow path 75 is a pipe (not shown) that connects between the flow path switching unit 72 and the nozzle cleaning unit 44.

[0042] The posterior cleansing flow path 80a flows water or functional water generated in the electrolytic cell unit 126 from the flow path switching unit 72 toward the posterior cleansing outlet 83b. The soft cleansing flow path 80b flows water or functional water generated in the electrolytic cell unit 126 from the flow path switching unit 72 toward the soft cleansing outlet 83c. The bidet cleansing flow path 80c flows water or functional water generated in the electrolytic cell unit 126 from the flow path switching unit 72 toward the bidet cleansing outlet 83d. The first bowl jetting flow path 80d flows water or functional water generated in the electrolytic cell unit 126 from the flow path switching unit 72 toward the first outlet 83e. The second bowl jetting flow path 80e flows water or functional water generated in the electrolytic cell unit 126 from the flow path switching unit 72 toward the second outlet 85a. Further, the surface cleaning flow path 75 allows water or functional water generated in the electrolytic cell unit 126 to flow from the flow path switching unit 72 toward the nozzle cleaning unit 44 .

[0043] The control unit 130 controls the flow path switching unit 72 to switch between opening and closing of each of the flow paths, namely, the posterior cleansing flow path 80a, the soft cleansing flow path 80b, the bidet cleansing flow path 80c, the first bowl jetting flow path 80d, the second bowl jetting flow path 80e, and the surface cleansing flow path 75. In this way, the flow path switching unit 72 switches between a state in which each of the multiple water outlets, such as the posterior cleansing outlet 83b, the soft cleansing outlet 83c, the bidet cleansing outlet 83d, the nozzle cleaning unit 44, and the first and second jets 83e and 83f, is connected to the pipe 110 and a state in which it is not connected to the pipe 110.

[0044] The control unit 130 is supplied with power from a power supply circuit 135, and controls the operation of the solenoid valve 120, the heat exchanger unit 123, the electrolytic cell unit 126, the pressure modulation unit 127, the flow rate adjustment unit 71, the flow path switching unit 72, the nozzle motor 50, etc., based on signals from the seating detection sensor 150, the flow rate sensor 124, the operation unit 140, etc. In this way, the control unit 130 controls the operation of the nozzle unit 60.

[0045] Next, the local cleansing device 30 provided inside the casing 10 will be described. FIG. 3 is a cross-sectional side view of the local cleaning device inside the casing. FIG. 4 is a side view showing a state in which the cover portion is removed from the main body portion of the support portion. FIG. 5 is a side view showing a state in which the gears and the belt are removed from the support part in FIG. FIG. 6 is a perspective view of the private parts washing device as seen obliquely from behind. FIG. 7 is a side view showing the nozzle unit alone. FIG. 8 is a side view showing a state in which a nozzle cover is removed from the nozzle unit in FIG. FIG. 9 is a perspective view showing a state in which the nozzle head is removed from the second cylindrical portion. FIG. 10 is a cross-sectional view showing a flow path provided inside the nozzle body.

[0046] The private parts washing device 30 washes the private parts of a user seated on the toilet seat 20. In this example, the private parts washing device 30 also has a function of spraying water or functional water into the toilet bowl 200 to prevent dirt from adhering to the inside of the toilet bowl 200. This function may be provided as necessary. The private parts washing device 30 has a support part 40 provided on the case plate 11 of the casing 10, and a nozzle unit 60 slidably supported on the support part 40.

[0047] The support part 40 is located below the nozzle unit 60 and supports the nozzle unit 60 from below. The support part 40 has a main body part 41 and a cover part 48 that covers the side of the main body part 41. As shown in Figs. 4 to 6, the main body part 41 has a bottom part 42 extending in the front-rear direction, a vertical part 43 extending upward from the bottom part 42, and a nozzle cleaning part 44 located on the front end side of the bottom part 42 and the vertical part 43. The bottom part 42 and the vertical part 43 are inclined downward from the rear to the front. In addition, the bottom part 42 and the vertical part 43 are curved so as to be convex upward in accordance with the shape of the nozzle cover 90.

[0048] The nozzle cleaning unit 44 covers the outer periphery of the nozzle cover 90. The nozzle cleaning unit 44 cleans the outer periphery surface (body) of the nozzle cover 90, for example, by spraying functional water or water from the water discharge unit.

[0049] The support portion 40 has a groove portion 45 extending in the direction in which the nozzle unit 60 advances and retreats, and a rail portion 46 extending in the direction in which the nozzle unit 60 advances and retreats at a position different from the groove portion 45. The groove portion 45 and the rail portion 46 serve as portions that guide the nozzle unit 60 when the nozzle unit 60 advances and retreats between inside the casing 10 and inside the toilet bowl 200.

[0050] The groove portion 45 penetrates the vertical portion 43 in the thickness direction (left-right direction). The groove portion 45 extends in the front-rear direction and curves to be convex upward in accordance with the shape of the nozzle cover 90. The groove portion 45 holds a protruding portion 73a of the nozzle unit 60, which will be described later.

[0051] The rail portion 46 is provided so as to protrude in the left-right direction from the bottom portion 42. The rail portion 46 is formed in a flat plate shape extending in the front-rear direction. The rail portion 46 extends in the front-rear direction and curves so as to be convex upward in accordance with the shape of the nozzle cover 90. A recess 73b of the nozzle unit 60, which will be described later, is held in the rail portion 46. The nozzle unit 60 advances and retreats along an arc-shaped track because the groove portion 45 and the rail portion 46 are curved in the front-rear direction.

[0052] The nozzle motor 50 is provided below the bottom portion 42. The nozzle motor 50 is a drive unit that moves the nozzle unit 60 forward and backward. The nozzle motor 50 is connected to the control unit 130. When the operation unit 140 is operated, the nozzle motor 50 operates based on the operation instruction.

[0053] As shown in Fig. 4, gear 52 is located on the side surface of main body 41, and is attached to a rotating shaft 50a of nozzle motor 50. Gear 52 rotates by operation of nozzle motor 50. Cable rack 53 is located around gear 52 and meshes with gear 52. Cable rack 53 is a rack gear that converts the rotational motion of gear 52 into linear motion. Cable rack 53 engages with an engagement portion 73c provided on case 73 of flow adjustment unit 70.

[0054] The nozzle unit 60 is curved so as to be convex upward, and moves forward and backward along an arc-shaped track. Specifically, when the gear 52 rotates counterclockwise from the state shown in FIG. 4, the cable rack 53 moves forward. The nozzle unit 60 advances toward the inside of the toilet bowl 200 as the cable rack 53 presses the engagement portion 73c forward. On the other hand, when the gear 52 rotates clockwise, the cable rack 53 moves backward. The nozzle unit 60 retreats into the casing 10 as the cable rack 53 presses the engagement portion 73c backward.

[0055] The nozzle unit 60 has a flow adjustment unit 70, a nozzle body 80 located in front of the flow adjustment unit 70, and a nozzle cover 90 that covers the outer periphery of the nozzle body 80. The flow adjustment unit 70 has a flow rate adjustment section 71, a flow path switching section 72, and a case 73 that houses the flow rate adjustment section 71 and the flow path switching section 72. The nozzle body 80 has a first flow path 85 through which water flows, a second flow path 86 connected to the first flow path 85, and a third flow path 87 connected to the second flow path 86. The first to third flow paths 85 to 87 will be described later.

[0056] The case 73 of the flow adjustment unit 70 is attached to the nozzle body 80. The nozzle cover 90 is attached to the case 73 and the nozzle body 80. This allows the nozzle unit 60, the flow adjustment unit 70, the nozzle body 80, and the nozzle cover 90 to slide in the front-rear direction relative to the support part 40 as a single unit.

[0057] The case 73 has a cylindrical protruding portion 73a that is held so as to be sandwiched from above and below in the groove portion 45 of the support portion 40, and a recessed portion 73b that is held so as to sandwich the rail portion 46 of the support portion 40 from above and below. The protruding portion 73a is provided at a position corresponding to the groove portion 45 of the support portion 40. The recessed portion 73b is provided at a position corresponding to the rail portion 46 of the support portion 40.

[0058] The engaging portion 73c is provided above the protruding portion 73a. As shown in Fig. 4, the cable rack 53 engages with the engaging portion 73c. ​​The rotational force of the nozzle motor 50 is transmitted from the gear 52 to the engaging portion 73c via the cable rack 53. The nozzle unit 60 moves back and forth between the inside of the casing 10 and the inside of the toilet 200 as the cable rack 53 moves the engaging portion 73c in the front-rear direction.

[0059] The nozzle body 80 is provided in front of the flow adjustment unit 70. Inside the nozzle body 80, a rear cleansing flow path 80a, a soft cleansing flow path 80b, a bidet cleansing flow path 80c, a first bowl jetting flow path 80d, and a second bowl jetting flow path 80e are provided. The water and functional water flowing into the flow adjustment unit 70 flows into the rear cleansing flow path 80a, the soft cleansing flow path 80b, the bidet cleansing flow path 80c, the first bowl jetting flow path 80d, the second bowl jetting flow path 80e, and the surface cleansing flow path 75 by the operation of the flow path switching unit 72.

[0060] The nozzle body 80 has a first cylindrical portion 81, a second cylindrical portion 82, and a nozzle head 83. The first cylindrical portion 81 is connected to the front of the case 73 of the flow adjustment unit 70. The second cylindrical portion 82 is connected to the front of the first cylindrical portion 81. The nozzle head 83 is connected to the front of the second cylindrical portion 82.

[0061] The first cylindrical portion 81, the second cylindrical portion 82, and the nozzle head 83 are formed of, for example, a resin material, with the outer surfaces 81a, 82a, and 83a being linearly formed in the longitudinal direction. The first cylindrical portion 81 and the second cylindrical portion 82 may be fixed to each other, or may be detachable. The first cylindrical portion 81 and the second cylindrical portion 82 are joined to each other, for example, by welding, a rubber packing, or the like. The nozzle head 83 may be fixed to the second cylindrical portion 82, or may be detachable. The nozzle head 83 is joined to the second cylindrical portion 82, for example, by welding, a rubber packing, or the like.

[0062] The bottom cleansing flow path 80a, the soft cleansing flow path 80b, the bidet cleansing flow path 80c, the first bowl jetting flow path 80d, and the second bowl jetting flow path 80e extend in the longitudinal direction (front-rear direction) inside the first cylindrical portion 81, the second cylindrical portion 82, and the nozzle head 83. That is, as shown in FIG. 9, five flow paths are formed inside the first cylindrical portion 81, the second cylindrical portion 82, and the nozzle head 83.

[0063] The nozzle head 83 has a posterior cleansing water outlet 83b, a soft cleansing water outlet 83c, a bidet cleansing water outlet 83d, a first outlet 83e, and a second outlet 83f. The posterior cleansing water outlet 83b is connected to the posterior cleansing flow path 80a. The soft cleansing water outlet 83c is connected to the soft cleansing flow path 80b. The bidet cleansing water outlet 83d is connected to the bidet cleansing flow path 80c. The first outlet 83e is connected to the first bowl outlet flow path 80d. The second outlet 83f is connected to the second bowl outlet flow path 80e.

[0064] The nozzle body 80 can spray hot water from the rear cleansing water outlet 83b or the soft cleansing water outlet 83c of the nozzle head 83 to wash the "buttocks" of a user sitting on the toilet seat 20. The soft cleansing water outlet 83c sprays water with a softer water flow than the rear cleansing water outlet 83b. The nozzle body 80 can also spray hot water from the bidet cleansing water outlet 83d of the nozzle head 83 to wash the female private parts of a woman sitting on the toilet seat 20.

[0065] The first and second outlets 83e and 83f are provided, for example, side by side on the front surface of the nozzle head 83. The first and second outlets 83e and 83f spray water or functional water toward the inside of the toilet bowl 200. The first and second outlets 83e and 83f spray water and functional water in different directions in the front-to-rear direction. The water or functional water sprayed into the toilet bowl 200 from the first and second outlets 83e and 83f prevents dirt from adhering to the inside of the toilet bowl 200.

[0066] Next, the configurations of the posterior cleansing flow passage 80a, the soft cleansing flow passage 80b, the bidet cleansing flow passage 80c, the first bowl jetting flow passage 80d, and the second bowl jetting flow passage 80e will be described with reference to FIG.

[0067] The rear cleansing flow path 80a, the soft cleansing flow path 80b, the bidet cleansing flow path 80c, the first bowl jetting flow path 80d, and the second bowl jetting flow path 80e each have a first flow path 85 provided in the first cylindrical portion 81, a second flow path 86 provided in the second cylindrical portion 82, and a third flow path 87 provided in the nozzle head 83. The first flow path 85, the second flow path 86, and the third flow path 87 are connected in the longitudinal direction of the nozzle unit 60.

[0068] Here, the first cylindrical portion 81, the second cylindrical portion 82, and the nozzle head 83 are manufactured by, for example, injection molding. When the first and second flow paths 85, 86 are curved to match the shape of the nozzle cover 90, there is a risk that the hole diameters of the first and second flow paths 85, 86 will become small in order to remove the pins of the mold.

[0069] 10, the first flow path 85, the second flow path 86, and the third flow path 87 each extend linearly. This prevents the hole diameter (flow path area) of the first and second flow paths 85, 86 in the nozzle body 80 from becoming small. Therefore, the nozzle unit 60 is capable of stably ejecting water from the nozzle head 83.

[0070] Moreover, the draft gradient of first flow passage 85, second flow passage 86, and third flow passage 87 is about 1 to 5°. Due to this draft gradient, the hole diameter of the boundary between first flow passage 85 and second flow passage 86 is smaller than the hole diameter of first flow passage 85 on the case 73 side and the hole diameter of second flow passage 86 on the nozzle head 83 side.

[0071] The flow rate of the water or functional water (hereinafter referred to as water) flowing through the first flow path 85 to the third flow path 87 can be made uniform, even if the hole diameter at the boundary between the first flow path 85 and the second flow path 86 is narrowed, because the hole diameter on the nozzle head 83 side of the second flow path 86 is large. This makes it possible to reduce pressure loss of the water flowing through the first flow path 85 to the third flow path 87, so that the water can be stably discharged from the nozzle head 83.

[0072] The second flow path 86 has a different water flow direction from the first flow path 85 in the longitudinal direction of the nozzle unit 60. The third flow path 87 has a different water flow direction from the first flow path 85 and the second flow path 86 in the longitudinal direction of the nozzle unit 60. That is, the boundary between the first flow path 85 and the second flow path 86 and the boundary between the second flow path 86 and the third flow path 87 are turning points where the water flow direction changes. In other words, the flow direction of the water flowing inside the nozzle unit 60 changes stepwise from the first flow path 85 to the third flow path 87.

[0073] 10, the angle α1 between the first flow passage 85 and the horizontal is smaller than the angle α2 between the second flow passage 86 and the horizontal (α1<α2). In other words, the second flow passage 86 has a greater inclination than the first flow passage 85. Also, the angle α3 between the third flow passage 87 and the horizontal is greater than the angle α2 between the second flow passage 86 and the horizontal (α1<α2<α3). That is, the inclination of the nozzle body 80 increases from the first flow passage 85 to the third flow passage 87.

[0074] By gradually increasing the inclination angle from the first flow path 85 to the third flow path 87, it is possible to suppress pressure loss of the water flowing in the first flow path 85 to the third flow path 87. This allows the nozzle head 83 to eject water stably.

[0075] The length L1 of the first cylindrical portion 81, the length L2 of the second cylindrical portion 82, and the length L3 of the nozzle head 83 may be the same. In this case, "the same" includes the range of manufacturing errors of the first cylindrical portion 81, the second cylindrical portion 82, and the nozzle head 83. The range of manufacturing errors is, for example, within 0.1 mm to 2.0 mm. In this way, the amount of change in the inclination of the first and second cylindrical portions 81, 82, and the nozzle head 83 can be made constant. Therefore, the effect of pressure loss caused by connecting the first to third flow paths 85 to 87 can be suppressed, and water can be discharged more stably from the nozzle head 83.

[0076] The nozzle cover 90 covers the outer surfaces 81a, 82a, and 83a of the nozzle body 80. As shown in Fig. 7, the nozzle cover 90 is curved so as to be convex upward, and moves forward and backward along an arc-shaped track. The nozzle cover 90 has holes 90a that communicate with the rear cleansing water outlet 83b, the soft cleansing water outlet 83c, and the bidet cleansing water outlet 83d, respectively, and a cutout 90b that exposes the first outlet 83e and the second outlet 83f.

[0077] According to this embodiment, the nozzle unit 60 is curved so as to be convex upward, and advances and retreats along an arc-shaped trajectory. This allows the height dimension of the local cleaning device 30 to be as small as possible. Therefore, the height dimension of the casing 10 can also be made as small as possible, improving the design of the sanitary cleaning device 100.

[0078] On the other hand, it is possible to curve the flow passage in the nozzle unit to match the curved shape of the nozzle unit. In such a case, for example, if the nozzle unit is greatly curved, the flow passage may become tapered due to manufacturing errors, and it may not be possible to ensure the flow passage area. Furthermore, if the flow passage is enlarged, the nozzle unit may become larger.

[0079] Therefore, the nozzle unit 60 has a first flow path 85 through which water flows, and a second flow path 86 connected to the first flow path 85. The second flow path 86 has a different water flow direction from the first flow path 85 in the longitudinal direction of the nozzle unit 60. The nozzle unit 60 can secure a flow path area and perform stable water discharge by gradually changing the water flow direction using the first flow path 85 and the second flow path 86.

[0080] In addition, the first flow path 85 and the second flow path 86 each extend linearly. This makes it easier to remove the pins of the mold from the first flow path 85 and the second flow path 86, so that the nozzle unit 60 can be manufactured efficiently. In addition, since the flow path areas of the first flow path 85 and the second flow path 86 can be secured, stable water discharge can be achieved even when the nozzle unit 60 is curved.

[0081] The nozzle unit 60 also has a nozzle body 80 and a nozzle cover 90 that covers the nozzle body 80 and is curved so as to be convex upward. The nozzle body 80 has a first cylindrical portion 81 having a first flow passage 85, and a second cylindrical portion 82 having a second flow passage 86. An outer surface 81a of the first cylindrical portion 81 and an outer surface 82a of the second cylindrical portion 82 each extend linearly in the longitudinal direction.

[0082] That is, the first tubular portion 81 and the second tubular portion 82, whose outer surfaces 81a, 82a are linear in the longitudinal direction, are housed inside the curved nozzle cover 90. This allows a constant thickness to be secured between the first and second flow paths 85, 86 and the outer surfaces 81a, 82a of the first tubular portion 81 and the second tubular portion 82, compared to when the first tubular portion 81 and the second tubular portion 82 are curved. This allows stable water discharge while ensuring the durability of the nozzle body 80.

[0083] In addition, the second cylindrical portion 82 is connected to the front of the first cylindrical portion 81. This makes it possible to improve the durability of the nozzle body 80, compared to, for example, a multi-stage nozzle unit in which the second cylindrical portion advances so as to protrude from the inside of the first cylindrical portion.

[0084] In addition, the angle α1 between the first flow passage 85 and the horizontal is smaller than the angle α2 between the second flow passage 86 and the horizontal. This allows the first and second tubular portions 81, 82 in which the first and second flow passages 85, 86 are formed to be formed to conform to the nozzle cover 90 that is curved to be convex upward while maintaining a constant thickness. Therefore, compared to the case in which the first and second flow passages 85, 86 are curved upward, physical interference between the nozzle cover 90 and the first and second tubular portions 81, 82 is suppressed, and the nozzle body 80 can be made compact.

[0085] Furthermore, the nozzle body 80 has a nozzle head 83 connected to the front of the second tubular portion 82 and having a third flow path 87. The angle α3 between the third flow path 87 and the horizontal is larger than the angle α2 between the second flow path 86 and the horizontal. This allows the nozzle body 80 to be made more compact, making it easier to store the nozzle body 80 in the nozzle cover 90.

[0086] Additionally, the length L1 of the first tubular portion 81, the length L2 of the second tubular portion 82, and the length L3 of the nozzle head 83 are all the same. This allows the amount of change in the inclination angle of the first tubular portion 81, the second tubular portion 82, and the nozzle head 83 to be constant. This allows the effect of pressure loss caused by connecting multiple flow paths to be suppressed, allowing for more stable water discharge.

[0087] In the above-described embodiment, an example was described in which the nozzle body 80 has a first cylindrical portion 81 having a first flow path 85 and a second cylindrical portion 82 having a second flow path 86, thereby providing two stages in the direction of water flow. However, the present invention is not limited to this aspect, and for example, the nozzle body may have three or more cylindrical portions (flow paths) in which the direction of water flow differs in stages.

[0088] In the above-described embodiment, the first flow path 85 and the second flow path 86 are linear flow paths. However, the present invention is not limited to this. For example, at least one of the first flow path 85 and the second flow path 86 may be a curved flow path, or both of the flow paths may be curved. That is, the flow paths in the nozzle body 80 may be only linear flow paths or only curved flow paths, or both linear flow paths and curved flow paths may be provided.

[0089] The embodiment may include the following features. (Configuration 1) A casing; a nozzle unit that moves back and forth between the casing and the toilet bowl; Equipped with The nozzle unit is curved so as to be convex upward and moves back and forth along an arc-shaped path, The nozzle unit has a first flow path through which water flows and a second flow path connected to the first flow path, A sanitary washing device, characterized in that the second flow path has a different water flow direction from the first flow path in the longitudinal direction of the nozzle unit. (Configuration 2) The sanitary washing device according to configuration 1, wherein the first flow path and the second flow path each extend linearly. (Configuration 3) The nozzle unit includes: A nozzle body; a nozzle cover that covers the nozzle body and is curved so as to be convex upward; having The nozzle body includes: A first cylindrical portion having the first flow path; A second cylindrical portion having the second flow path; having The sanitary washing device according to configuration 1 or 2, wherein the outer surface of the first cylindrical portion and the outer surface of the second cylindrical portion each extend linearly in the longitudinal direction. (Configuration 4) The sanitary washing device according to configuration 3, wherein the second cylindrical portion is connected to a front of the first cylindrical portion. (Configuration 5) 5. The sanitary washing device according to any one of configurations 1 to 4, wherein an angle between the first flow path and the horizontal is smaller than an angle between the second flow path and the horizontal. (Configuration 6) The nozzle unit includes: A first cylindrical portion having the first flow path; A second cylindrical portion having the second flow path; a nozzle head connected to a front portion of the second cylindrical portion and having a third flow path; having The sanitary washing device according to configuration 5, wherein an angle between the third flow path and the horizontal is larger than an angle between the second flow path and the horizontal. (Configuration 7) The sanitary washing device according to configuration 6, wherein the first tubular portion, the second tubular portion, and the nozzle head have the same length.

[0090] The above describes the embodiments of the present invention. However, the present invention is not limited to these descriptions. Regarding the above-mentioned embodiments, those in which a person skilled in the art makes appropriate design changes are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, dimensions, materials, arrangement, etc. of each element of a sanitary washing device are not limited to those exemplified, and can be appropriately changed. In addition, each element of each of the above-mentioned embodiments can be combined to the extent technically possible, and combinations of these are also included in the scope of the present invention as long as they include the features of the present invention. [Explanation of symbols]

[0091] 10 Casing 11 Case Plate 12 Case cover 12a Lid 20 Toilet Seat 25 Toilet lid 30. Private Parts Cleaning Device 40 Support part 41 Main body 42 Bottom 43 Vertical section 44 Nozzle cleaning section 45 Groove 46 Rail section 48 Cover part 50 nozzle motor 50a Rotating shaft 52 Gears 53 Cable rack 60 Nozzle unit 70 Flow Control Unit 71 Flow rate adjustment section 72 Flow path switching section 73 cases 73a Protrusion 73b Recess 73c Engagement part 75 Surface cleaning channel 80 Nozzle body 80a Rear-washing channel 80b Soft cleaning channel 80c Bidet Cleansing Channel 80d First bowl outlet passage 80e Second bowl outlet passage 81 First cylinder part 81a Exterior 82 Second cylinder part 82a Exterior 83 Nozzle Head 83a Exterior 83b Rear-cleaning water outlet 83c Soft cleaning spout 83d Bidet cleaning spout 83e 1st spout 83f 2nd spout 85 First Stream 86 Second Stream 87 3rd Stream 90 Nozzle cover 90a hole 90b Notch 100 Sanitary cleaning equipment 110 Pipeline 120 Solenoid valve 121 Pressure Regulating Valve 122 Check valve 123 Heat Exchanger Unit 124 Flow Sensor 125 Vacuum Breaker 126 Electrolyzer Unit 127 Pressure Modulation Section 130 Control section 135 Power supply circuit 140 Operation section 150 Seated detection sensor 200 Toilet 300 Toilet equipment 500 Water source

Claims

1. A casing; a nozzle unit that moves back and forth between the casing and the toilet bowl; Equipped with The nozzle unit is curved so as to be convex upward and moves back and forth along an arc-shaped path, The nozzle unit has a first flow path through which water flows and a second flow path connected to the first flow path, A sanitary washing device, characterized in that the second flow path has a different water flow direction from the first flow path in the longitudinal direction of the nozzle unit.

2. The sanitary washing device according to claim 1 , wherein the first flow path and the second flow path each extend linearly.

3. The nozzle unit includes: A nozzle body; a nozzle cover that covers the nozzle body and is curved so as to be convex upward; having The nozzle body includes: A first cylindrical portion having the first flow path; a second cylindrical portion having the second flow path; having The sanitary washing device according to claim 1 or 2, wherein an outer surface of the first cylindrical portion and an outer surface of the second cylindrical portion each extend linearly in the longitudinal direction.

4. The sanitary washing device according to claim 3 , wherein the second cylindrical portion is connected to a front of the first cylindrical portion.

5. 3. The sanitary washing device according to claim 1, wherein an angle between the first flow path and the horizontal is smaller than an angle between the second flow path and the horizontal.

6. The nozzle unit includes: A first cylindrical portion having the first flow path; a second cylindrical portion having the second flow path; a nozzle head connected to a front portion of the second cylindrical portion and having a third flow path; having The sanitary washing device according to claim 5 , wherein an angle between the third flow path and the horizontal is larger than an angle between the second flow path and the horizontal.

7. The sanitary washing device according to claim 6, wherein the first tubular portion, the second tubular portion, and the nozzle head have the same length.

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