Sanitary cleaning equipment

Abstract

The present invention provides a sanitary cleaning device that can selectively generate multiple water flow states and adjust the water flow rate without using a pump. [Solution] The sanitary cleaning device 1 comprises a nozzle 2 and a switching device 47. The nozzle 2 includes a nozzle head 20, a main flow path 21, and a sub-flow path 22. The switching device 47 includes a first member 6 and a second member 7 that rotates relative to it. The first member 6 includes a main groove 61 with an opening 610 connected to the main flow path 21, and a sub-groove 62 with an opening 620 connected to the sub-flow path 22. The second member 7 includes a main opening 71 that can communicate with the main groove 61 of the first member 6 depending on its relative rotation position, and a sub-opening 72 that can communicate with the sub-groove 62 of the first member 6 depending on its relative rotation position.

Description

Technical Field

[0001] The present disclosure relates to a sanitary cleaning device for cleaning a part of a seated human body.

Background Art

[0002] A sanitary cleaning device configured to discharge a cleaning water flow so as to hit a part of a seated human body and clean the part is conventionally known. Patent Document 1 discloses a sanitary cleaning device capable of selectively generating water flows in a plurality of states. According to this sanitary cleaning device, a user can selectively use a water flow in one of the plurality of states according to their preference and situation.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present disclosure is to provide a sanitary cleaning device that can selectively generate water flows in a plurality of states and adjust the flow rate of the water flow without using a pump for flow rate adjustment.

Means for Solving the Problems

[0005] A sanitary washing apparatus according to one embodiment of the present disclosure comprises a nozzle that discharges a stream of water toward a part of a seated human body, and a switching device that switches the mode of supplying the stream of water to the nozzle. The nozzle includes a nozzle head, a main flow path for supplying a main stream of water to the nozzle head, and a sub-flow path for supplying a sub-stream that merges with the main stream of water to the nozzle head. The switching device includes a first member and a second member that rotates relative to the first member. The first member includes a main groove portion having an opening connected to the main flow path, and a sub-groove portion having an opening connected to the sub-flow path. The second member includes a main opening configured to communicate with the main groove portion of the first member depending on the relative rotation position of the second member with respect to the first member, and a sub-opening configured to communicate with the sub-groove portion of the first member depending on the relative rotation position of the second member with respect to the first member. Depending on the relative rotational position of the second member, at least one of the main water flow rate through the main opening of the second member and the main groove of the first member, and the sub-water flow rate through the sub-opening of the second member and the sub-groove of the first member is changed. [Effects of the Invention]

[0006] According to this disclosure, at least one of the main flow rate and the sub-flow rate is changed by the relative rotation of the second member with respect to the first member. Therefore, multiple states of water flow can be selectively generated and the flow rate of the water flow can be adjusted without using a flow rate adjustment pump. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a schematic perspective view showing a sanitary cleaning device according to one embodiment installed on a toilet bowl. [Figure 2] Figure 2 is a schematic circuit diagram showing the water circuit of the sanitary cleaning device described above. [Figure 3] Figure 3 is a view from above of the nozzles included in the sanitary cleaning device described above. [Figure 4]Figure 4 is a cross-sectional view taken along line AA in Figure 3. [Figure 5] Figure 5 is an enlarged cross-sectional view of the main part of Figure 4. [Figure 6] Figure 6 is a cross-sectional view along line BB in Figure 4. [Figure 7] Figure 7 is a perspective view of the first component of the switching device included in the sanitary cleaning device described above. [Figure 8] Figure 8 is a perspective view of the second component of the switching device included in the same sanitary cleaning device. [Figure 9] Figure 9 shows the positional relationship between the first and second members when a continuous water flow is discharged at a low volume in the same switching device as above. [Figure 10] Figure 10 shows the positional relationship between the first and second members when a continuous water flow is discharged at a medium volume in the same switching device. [Figure 11] Figure 11 shows the positional relationship between the first and second members when a continuous water flow is discharged at a high volume in the same switching device as above. [Figure 12] Figure 12 shows the positional relationship between the first and second members when a two-phase water flow is discharged at a high volume in the same switching device as above. [Figure 13] Figure 13 shows the positional relationship between the first and second members when a two-phase water flow is discharged at a medium volume in the same switching device as above. [Figure 14] Figure 14 shows the positional relationship between the first and second members when a two-phase water flow is discharged at a low volume in the same switching device as above. [Figure 15] Figure 15 shows the positional relationship between the first and second members when the intermittent water flow is discharged at a low volume in the same switching device as above. [Figure 16] Figure 16 shows the positional relationship between the first and second members when the intermittent water flow is discharged at a medium volume in the same switching device as above. [Figure 17] Figure 17 shows the positional relationship between the first and second members when an intermittent water flow is discharged at a high volume in the same switching device as above. [Figure 18] FIG. 18 is a diagram showing the relationship between the rotational position of the second member and the state of the water flow. [Figure 19] FIG. 19 is a cross-sectional view showing the state in which a continuous water flow is discharged from the nozzle. [Figure 20] FIG. 20 is a cross-sectional view showing the state in which a continuous water flow is discharged from the nozzle. [Figure 21] FIG. 21 is a cross-sectional view showing the state in which a continuous water flow is discharged from the nozzle. [Figure 22] FIG. 22 is a cross-sectional view showing the state in which a continuous water flow is discharged from the nozzle. [Figure 23] FIG. 23 is a cross-sectional view showing the state in which a two-phase water flow is discharged from the nozzle. [Figure 24] FIG. 24 is a cross-sectional view showing the state in which a two-phase water flow is discharged from the nozzle. [Figure 25] FIG. 25 is a diagram showing the state of the water flow in the space after a two-phase water flow is discharged from the nozzle. [Figure 26] FIG. 26 is a cross-sectional view showing the state in which an intermittent water flow is discharged from the nozzle. [Figure 27] FIG. 27 is a cross-sectional view showing the state in which an intermittent water flow is discharged from the nozzle. [Figure 28] FIG. 28 is a diagram showing the state 1 of the water flow in the space after being discharged from the nozzle. [Figure 29] FIG. 29 is a diagram showing the state 2 of the water flow in the space after being discharged from the nozzle.

BEST MODE FOR CARRYING OUT THE INVENTION

[0008] The following description of the sanitary cleaning apparatus 1 relating to this disclosure will be given with reference to the drawings. The following embodiments are examples given to illustrate this disclosure and are not intended to limit it. For example, the shapes, structures, components, relative positions, connection states, numerical values, and the content and order of each step in the method shown in the following embodiments are examples and may include content not described below. Geometric expressions such as parallel and orthogonal may be used, but these expressions do not require mathematical rigor and include substantially acceptable errors and deviations. Expressions such as simultaneous and identical also include substantially acceptable ranges.

[0009] Furthermore, the drawings include schematic diagrams that have been appropriately emphasized, omitted, and proportion-adjusted to illustrate this disclosure, and these schematic diagrams differ from the actual shapes, positions, and proportions.

[0010] In the following, multiple disclosures may be described comprehensively as a single embodiment. Furthermore, some of the content described below is described as an optional component of this disclosure.

[0011] (Sanitary cleaning device 1) Figure 1 is a perspective view showing one embodiment of a sanitary washing device 1 attached to a toilet bowl 3. The sanitary washing device 1 is a device attached to a toilet bowl 3 and configured to discharge water generated by a heating device 45 (described later) from a nozzle 2 toward the private parts of a person seated on the toilet seat 30.

[0012] The sanitary washing device 1 comprises a nozzle 2 that discharges a stream of water towards the private parts of a seated person's body, and a water circuit 4 (see Figure 2) that supplies the stream of water to the nozzle 2. In this embodiment, the sanitary washing device 1 further comprises a toilet seat 30 that can be opened and closed relative to the toilet bowl 3.

[0013] The nozzle 2 includes a cylindrical nozzle body 5 and a nozzle head 20 attached to the tip of the nozzle body 5 (see Figure 4). The nozzle head 20 can extend and retract together with the nozzle body 5. The sanitary cleaning device 1 may further include a toilet lid that can be opened and closed relative to the toilet bowl 3. In this disclosure, "water" includes hot water.

[0014] (Water circuit 4) The configuration of the water circuit 4 provided by the sanitary cleaning device 1 is not particularly limited, but in this embodiment, the water circuit 4 includes, in order from upstream, a water supply connection port 40, a strainer 41, a water shut-off solenoid valve 42, a pressure reducing valve 43, a vacuum breaker 44, a heating device 45, a flow control valve 46, and a switching device 47.

[0015] The water supply connection port 40 is a component that is connected to the water pipe by an adapter or the like, and has a strainer 41 integrated inside to prevent debris contained in the tap water from entering.

[0016] The water shut-off solenoid valve 42 is a valve that can open and close the flow of water from the water pipe under control from the control device 31 (see Figure 1). By opening the water shut-off solenoid valve 42, water can be discharged from the nozzle 2, and by closing the water shut-off solenoid valve 42, the discharge of water from the nozzle 2 can be stopped.

[0017] The pressure reducing valve 43 is a valve that reduces the pressure of the water supplied from the water pipe and maintains a constant water pressure.

[0018] The vacuum breaker 44 prevents water inside the water circuit 4 from flowing back into the water pipe when the water pipe connected to the water supply connection port 40 becomes negatively pressurized due to a water outage or the like. The vacuum breaker 44 is connected to the vent pipe 48. The vent pipe 48 is routed to the toilet bowl 32 of the toilet bowl 3 (see Figure 1). The vent pipe 48 is a supply passage for outside air that is supplied when the vacuum breaker 44 is activated. The vent pipe 48 also functions as a discharge channel that discharges water instantaneously released when the vacuum breaker is activated into the toilet bowl 3.

[0019] The heating device 45 is a device that heats tap water supplied from a water pipe to produce hot water. The heating device 45 is not particularly limited, but in this embodiment it is a heat exchanger that instantly heats the tap water supplied from the water pipe. The heating device 45 is equipped with an integrated buffer tank 450 that makes the temperature of the water heated by the heating device 45 uniform.

[0020] The flow control valve 46 is a valve that controls the amount of water supplied to the nozzle 2 by the control device 31.

[0021] The switching device 47 supplies the water heated by the heating device 45 to the nozzle body 5 of the nozzle 2 by splitting it into the main water flow W1 and the sub-water flow W2, which will be described later. The switching device 47 is configured to switch the flow rate ratio between the main water flow and the sub-water flow, and also to switch the total amount of water (hereinafter referred to as the washing water) by switching at least one of the flow rate of the main water flow W1 (hereinafter referred to as the "main water flow") and the flow rate of the sub-water flow W2 (hereinafter referred to as the "sub-water flow"). In other words, the switching device 47 is configured to switch between various modes for supplying water flow to the nozzle body 5.

[0022] (Nozzle body 5) As shown in Figures 3 and 4, the cylindrical nozzle body 5 that constitutes the main body of the nozzle 2 includes a main flow path 21 and a sub-flow path 22 that extend in the axial direction of the nozzle body 5.

[0023] The main flow path 21 is a flow path for supplying the main water flow W1 to the nozzle head 20, and is formed to extend in a straight line in the lower half of the nozzle body 5.

[0024] The sub-channel 22 is a channel for sending the sub-water flow W2 to the nozzle head 20, and is formed to extend in a straight line in the upper half of the nozzle body 5. The sub-water flow W2 is a water flow that merges with the main water flow W1 at the nozzle head 20, and various forms of water flow discharged from the nozzle head 20 are realized depending on the flow rate ratio of the main water flow to the sub-water flow and the amount of washing water.

[0025] The sub-channel 22 is formed independently of the main channel 21. The sub-channel 22 and the main channel 21 are located parallel to each other. The sub-channel 22 is located below the main channel 21.

[0026] The nozzle body 5 further includes a bidet channel 23 and a cleaning channel 24 (see Figure 6). The bidet channel 23 is a channel for supplying a bidet water stream to the nozzle head 20 and is formed independently of the main channel 21 and the sub-channel 22. The cleaning channel 24 is a channel for supplying a water stream for cleaning the nozzle head 20 via the pipe 87 and is formed independently of the main channel 21, the sub-channel 22, and the bidet channel 23.

[0027] (Nozzle head 20) The nozzle head 20 is configured to discharge warm water heated by the heating device 45 toward the genital area of ​​a person seated on the toilet seat 30. As shown in Figure 5, the nozzle head 20 comprises a first cylindrical portion 25, a second cylindrical portion 26, and a lid portion 27.

[0028] (First cylinder part 25) The first cylindrical portion 25 has a central axis 250 extending in one direction D1 (i.e., the Z-axis direction in the figure). In this embodiment, one end of the direction D1 is the upper side, and the other end of the direction D1 is the lower side. Inside the first cylindrical portion 25, a first flow path 28 of the nozzle head 20, which is connected to the main flow path 21, is formed. The central axis of the first flow path 28 coincides with the central axis 250 of the first cylindrical portion 25.

[0029] A first inlet hole 251 is provided in a portion of the first flow path 28 in one direction D1, penetrating in one direction D1 (i.e., the Z-axis direction in the figure). The main water flow W1, which is one of the water flows generated by the heating device 45 and branched by the switching device 47, flows into the lower end opening of the first cylindrical section 25 through the main flow path 21 provided in the nozzle body 5, passes through the first inlet hole 251, and flows into the internal space of the portion 252 of the first cylindrical section 25 above the first inlet hole 251.

[0030] The first inlet 251 and the upper portion 252 are both included in the first flow path 28. The relationship between the cross-sectional area S1 of the first inlet 251 and the cross-sectional area S2 of the internal space of the upper portion 252 is such that, as shown in Figure 5, the main water flow W1 flowing in from the first inlet 251 can be ejected from the upper end opening of the first cylindrical portion 25 without contacting the inner circumferential surface of the upper portion 252. Specifically, S2 > S1. The above cross-sectional area represents the area enclosed by the inner circumferential surface when the cylinder is cut by a plane perpendicular to its central axis.

[0031] The shape of the first cylindrical portion 25 is not particularly limited, but in this embodiment, a cylindrical shape is adopted. The shape of the first inlet hole 251 is not particularly limited, but in this embodiment, the first inlet hole 251 is a circular hole and is located at the radial center of the first cylindrical portion 25.

[0032] (Second cylinder part 26) The second cylindrical portion 26 has a central axis 260 extending in one direction D1. The central axis 260 of the second cylindrical portion 26 coincides with the central axis 250 of the first cylindrical portion 25. The second cylindrical portion 26 is a cylindrical part that surrounds the outer circumferential surface of the first cylindrical portion 25. In this embodiment, a first gap 201, with its lower end closed, is provided between the outer circumferential surface of the first cylindrical portion 25 and the inner circumferential surface of the second cylindrical portion 26. The inner circumferential surface of the second cylindrical portion 26 faces the outer circumferential surface of the first cylindrical portion 25.

[0033] The lower end of the first gap 201 is blocked by a part of the first cylindrical portion 25. The radial length G1 of the first gap 201 is smaller than the inner diameter L1 of the first inlet hole 251. The second cylindrical portion 26 is positioned to protrude above the upper end of the first cylindrical portion 25 in one direction D1. The sub-water flow W2 generated by the heating device 45 and branched by the switching device 47 flows into the first gap 201 between the first cylindrical portion 25 and the second cylindrical portion 26 through the sub-flow channel 22 provided in the nozzle body 5. The sub-water flow W2 that has flowed into the first gap 201 flows beyond the upper end of the first cylindrical portion 25 into the first cylindrical portion 25. The shape of the second cylindrical portion 26 is not particularly limited, such as a rectangular tube, but in this embodiment, a cylindrical shape similar to that of the first cylindrical portion 25 is adopted, and the second cylindrical portion 26 is positioned coaxially with the first cylindrical portion 25.

[0034] (Lid part 27) The lid portion 27 comprises an annular lid body 270 and a cylindrical portion 271 that extends upward from the front (i.e., upper) surface of the lid body 270.

[0035] The cylindrical portion 271 is a cylindrical part that is arranged coaxially with the first cylindrical portion 25. In other words, the first cylindrical portion 25, the second cylindrical portion 26, and the cylindrical portion 271 are arranged with the same axis. The cylindrical portion 271 has the same cylindrical shape as the first cylindrical portion 25.

[0036] The lid portion 27 is provided to close the upper end of the second cylindrical portion 26. In this embodiment, the lid portion 27 comprises a lid body 270 that closes the upper end of the second cylindrical portion 26, and a cylindrical portion 271 that protrudes upward from the radial center of the lid body 270. The lid portion 27 is provided with a through hole 272 that penetrates in one direction D1. The through hole 272 is formed to penetrate the lid body 270 and the cylindrical portion 271 in a continuous manner. Note that the lid portion 27 does not necessarily have to include the cylindrical portion 271, and may consist only of the lid body 270.

[0037] The central axis of the first inlet hole 251 and the central axis of the through hole 272 are located on the same straight line. The through hole 272 has a larger cross-sectional area towards the upper part. In this embodiment, the through hole 272 is a frustoconical hole. The inner circumferential surface 2720 of the cover portion 27 surrounding the through hole 272 is tapered. The angle of the inner circumferential surface 2720 with respect to the central axis of the through hole 272 is greater than 0 degrees and less than 10 degrees.

[0038] The radius L2 of the upper end opening 2721 of the through hole 272 is greater than the radius L3 of the lower end opening 2722 of the through hole 272. The cross-sectional area S3 of the upper end opening 2721 is greater than the cross-sectional area S4 of the lower end opening 2722.

[0039] For example, radius L2 is 1.35 mm. Radius L3 is 1.45 mm. In this case, the angle of the inner surface 2720 with respect to the central axis of the through hole 272 is 3.57 degrees.

[0040] A second gap 202 is formed between the first cylindrical portion 25 and the lid portion 27, communicating with the first gap 201. Therefore, the first cylindrical portion 25 faces the lid portion 27.

[0041] A second flow path 29 is formed in the second cylindrical section 26, which merges with the first flow path 28 midway through its course. The second flow path 29 includes a second inlet hole 261 made of a through hole, an air supply hole 262 made of a through hole, a first gap 201 provided to communicate with the second inlet hole 261 and the air supply hole 262, and a second gap 202 communicating with the first gap 201.

[0042] The second inlet hole 261, which is provided through a portion of the circumferential wall of the second cylindrical section 26, is a through-hole that allows the sub-water flow W2, which is the other water flow branched by the switching device 47, to flow into the first gap 201. The second inlet hole 261 penetrates the circumferential wall of the portion of the second cylindrical section 26 that overlaps with the outer circumference of the first cylindrical section 25. In other words, the upper end of the first cylindrical section 25 is located above the second inlet hole 261. The sub-water flow W2 flowing into the second inlet hole 261 strikes the outer surface of the first cylindrical section 25.

[0043] The air intake hole 262 is a through-hole for supplying air from outside the second cylindrical portion 26 to the first gap 201. In this embodiment, the air intake hole 262 is located at the lower part of the second cylindrical portion 26. The air intake hole 262 communicates with the lower end of the first gap 201. There may be one or more air intake holes 262, but in this embodiment, one air intake hole 262 is provided.

[0044] The positional relationship between the air intake hole 262 and the second inlet hole 261 is not particularly limited, but in this embodiment, the second inlet hole 261 is positioned above the air intake hole 262. The second inlet hole 261 and the air intake hole 262 are positioned such that the inflow direction of the sub-water flow W2 from the second inlet hole 261 and the inflow direction of the air from the air intake hole 262 are parallel to each other. The air intake hole 262 and the second inlet hole 261 are positioned 180 degrees apart from each other in the circumferential direction with respect to the central axis 260 of the second cylindrical portion 26.

[0045] The main water flow W1 that flows in from the first inlet hole 251 passes through the through hole 272 alone, or the sub-water flow W2 that fills the inside of the second cylindrical portion 26 passes through together with the main water flow W1. In this embodiment, the cross-sectional area S4 of the lower end opening 2722 of the through hole 272 is larger than the cross-sectional area S1 of the first inlet hole 251. In other words, S4 > S1 is satisfied.

[0046] As a result, when the sub-water flow W2 does not flow into the inside of the first cylindrical section 25 (i.e., when the inside of the first cylindrical section 25 is filled with air), the main water flow W1 that flows into the through hole 272 from the first inlet hole 251 can pass through without coming into contact with the inner circumferential surface 2720 of the through hole 272. The relationship between S2 and S3 may be S3 ≥ S2. Alternatively, S2 > S3 may be used as long as it does not affect the above viewpoint.

[0047] (Switching device 47) The switching device 47 is configured to switch the flow rate ratio between the main water flow rate, which is the flow rate of water flowing into the main flow path 21 of the nozzle body 5, and the sub water flow rate, which is the flow rate of water flowing into the sub flow path 22 of the nozzle body 5, and to switch the washing water volume, which is the sum of the main water flow rate and the sub water flow rate.

[0048] The switching device 47 does not have a pump function, and is operated by a motor 81 (described later) to enable switching of both the flow rate ratio and the amount of washing water over a wide range. In this embodiment, the switching device 47 is provided to implement three switching modes in which the ranges of the flow rate ratios differ from each other. The three switching modes will be described later.

[0049] As shown in Figure 4, the switching device 47 includes a first member 6, a second member 7 that is rotatable relative to the first member 6, a motor 81 that rotates the second member 7, and a biasing member 82 that biases the second member 7.

[0050] (First component 6) The first member 6 is fixed to the nozzle body 5. In other words, the first member 6 is a fixing plate. The first member 6 is a disc-shaped member having thickness, radial, and circumferential directions. The first member 6 has a virtual central axis 60 extending in the thickness direction.

[0051] The first member 6 has a circular first surface 661 facing one direction in its thickness direction and a circular second surface 662 facing the other direction in its thickness direction. The first member 6 has a main groove 61, a sub-groove 62, a bidet groove 63, and a cleaning groove 64 that are recessed in the thickness direction from the first surface 661 (see Figure 7). Each of these grooves 61, 62, 63, and 64 is formed to penetrate through in the thickness direction in at least a portion of it.

[0052] The first member 6 further has a central groove 65 recessed in the thickness direction from the first surface 661. The central groove 65 is not through in the thickness direction, in other words, it is a bottomed groove. The central groove 65 is located at a position through which the central axis 60 of the first member 6 passes.

[0053] As shown in Figure 7, the main groove 61, the bidet groove 63, and the cleaning groove 64 are provided on the outer circumference 68 of the first member 6. The sub-grooves 62 and the central groove 65 are provided on the inner circumference 69 of the first member 6. The outer circumference 68 and the inner circumference 69 are separated by a radial distance with respect to the central axis 60. With respect to the central axis 60, the range up to a predetermined radial distance is the inner circumference 69, and the range beyond the predetermined radial distance is the outer circumference 68.

[0054] In the annular outer circumference portion 68, the main groove portion 61, the bidet groove portion 63, and the cleaning groove portion 64 are positioned at a distance from each other in the circumferential direction of the first member 6. In the circumferential direction of the first member 6, the side on which the bidet groove portion 63 is located relative to the cleaning groove portion 64 is the first circumferential orientation d1 of the first member 6 (see the arrow in Figure 7).

[0055] In the circumferential direction of the first member 6, the bidet groove 63 is positioned in a first orientation d1 relative to the cleaning groove 64, and the main groove 61 is positioned in a first orientation d1 relative to the bidet groove 63. The cleaning groove 64 is positioned in a first orientation d1 relative to the main groove 61.

[0056] (Main groove section 61) The main groove 61 is provided with an opening 610 that penetrates the first member 6 in the thickness direction, and a bottomed groove 615 that extends circumferentially from the opening 610. The bottomed groove 615 is a non-penetrating groove portion in the thickness direction.

[0057] (Aperture 610) The opening 610 is located where it connects to the main flow path 21 of the nozzle body 5. In other words, water supplied to the main groove 61 is sent to the main flow path 21 through the opening 610. The opening 610 is provided such that its opening width changes in the circumferential direction. The opening width here is the radial width dimension of the first member 6.

[0058] The opening 610 is provided with a first region R11, a second region R12, and a third region R13 arranged in this order in the first orientation d1. The first region R11 has a shape in which the opening width widens as it approaches the first orientation d1. The second region R12 has a shape in which the opening width narrows as it approaches the first orientation d1. The third region R13 has a shape in which the opening width widens as it approaches the first orientation d1.

[0059] The first region R11 and the second region R12 are continuous with each other via the maximum width region R16. The first region R11 has a shape in which the opening width gradually widens toward the maximum width region R16, and the second region R12 has a shape in which the opening width gradually narrows toward the maximum width region R16. The radial inner contour of the first region R11 is a convex curved contour that bulges radially outward. Similarly, the radial inner contour of the second region R12 is a convex curved contour that bulges radially outward.

[0060] The second region R12 and the third region R13 are located at a distance from each other in the circumferential direction; in other words, they are separated from each other. The opening width of the part of the second region R12 closest to the third region R13 and the opening width of the part of the third region R13 closest to the second region R12 are approximately the same. It is also preferable that the second region R12 and the third region R13 are continuous in the circumferential direction. In this case, the second region R12 and the third region R13 are continuous with each other via a minimum width region.

[0061] (bottomed groove 615) The bottomed groove section 615 includes a plurality of bottomed grooves 611, 612 having different depths. In this embodiment, the plurality of bottomed grooves 611, 612 include two bottomed grooves 611, 612 that are located on opposite sides of the opening 610 in the circumferential direction.

[0062] Of the two bottomed grooves 611 and 612, one bottomed groove 611 is positioned in the opposite direction to the first orientation d1 with respect to the opening 610. In other words, the opening 610 is positioned in the first orientation d1 with respect to the bottomed groove 611. The bottom surface of the bottomed groove 611 is parallel to the first surface 661.

[0063] Of the two bottomed grooves 611 and 612, the other bottomed groove 612 is positioned in a first orientation d1 with respect to the opening 610. The bottom surface of the bottomed groove 612 includes an inclined surface 618 that is not parallel to the first surface 661. The inclined surface 618 is inclined such that it approaches the first surface 661 in the thickness direction as it moves towards the first orientation d1.

[0064] (Sub-groove 62) The sub-groove 62 is provided with an opening 620 that penetrates the first member 6 in the thickness direction, and a bottomed groove 625 that extends circumferentially from the opening 620 of the sub-groove 62. The bottomed groove 625 is a non-penetrating groove portion in the thickness direction.

[0065] (Aperture 620) The opening 620 is located in a position that connects to the sub-channel 22 of the nozzle body 5. In other words, the water supplied to the sub-groove 62 is sent to the sub-channel 22 through the opening 620.

[0066] (bottomed groove 625) The bottomed groove section 625 includes a plurality of bottomed grooves 621, 622, and 623 having different depths. In this embodiment, the plurality of bottomed grooves 621, 622, and 623 include a bottomed groove 621 located in the opposite direction to the first direction d1 with respect to the opening 620, and two bottomed grooves 622 and 623 located in the first direction d1 with respect to the opening 620. The bottomed groove 621 and the two bottomed grooves 622 and 623 are located on opposite sides of the opening 620 in the circumferential direction.

[0067] The bottom surface of the bottomed groove 621 includes an inclined surface 628 that is not parallel to the first surface 661. The inclined surface 628 is inclined so that it moves away from the first surface 661 in the thickness direction as it moves towards the first direction d1.

[0068] The bottom surfaces of the two bottomed grooves 622 and 623 are both parallel to the first surface 661. The two bottomed grooves 622 and 623 are formed in a series aligned circumferentially. One of the two bottomed grooves 622 is located between the other bottomed groove 623 and the opening 620, and is formed deeper than the other bottomed groove 623. In other words, the bottom surface of bottomed groove 622 is located further from the first surface 661 than the bottom surface of bottomed groove 623. The bottom surfaces of bottomed groove 622 and bottomed groove 623 are continuous circumferentially via a step.

[0069] In this embodiment, the bottomed groove 625 further includes another bottomed groove 624. The bottomed groove 624 is located radially outward from a portion of the opening 620 and the bottomed groove 621. The bottomed groove 624 includes an inclined surface 629 that is not parallel to the first surface 661. The inclined surface 629 is inclined such that it approaches the first surface 661 in the thickness direction as it moves radially outward.

[0070] (Bidet groove 63) The bidet groove 63 is provided with an opening 630 that penetrates the first member 6 in the thickness direction, and a bottomed groove 635 that extends circumferentially from the opening 630. The bottomed groove 635 is a non-penetrating groove portion in the thickness direction.

[0071] (Aperture 630) The opening 630 is located in a position that connects to the bidet passage of the nozzle body 5. In other words, water supplied to the bidet groove 63 is sent into the bidet passage through the opening 630. The opening width of the opening 630 is constant in the circumferential direction. The opening width here is the radial width dimension of the first member 6.

[0072] (bottomed groove 635) The bottomed groove portion 635 includes a plurality of bottomed grooves 631, 632. In this embodiment, the plurality of bottomed grooves 631, 632 include two bottomed grooves 631, 632 that are located on opposite sides of the opening 630 in the circumferential direction.

[0073] Of the two bottomed grooves 631 and 632, one bottomed groove 631 is positioned in the opposite direction to the first orientation d1 with respect to the opening 630. In other words, the opening 630 is positioned in the first orientation d1 with respect to the bottomed groove 631. The bottomed groove 631 is arc-shaped, and its bottom surface is parallel to the first surface 661.

[0074] Of the two bottomed grooves 631 and 632, the other bottomed groove 632 is positioned in a first orientation d1 with respect to the opening 630. The bottomed groove 632 is arc-shaped, and its bottom surface is parallel to the first surface 661. The depths of the bottomed grooves 631 and 632 are the same, but may be different.

[0075] (Cleaning groove 64) The cleaning groove 64 is provided with an opening 640 that penetrates the first member 6 in the thickness direction, and a bottomed groove 645 that extends circumferentially from the opening 640. The bottomed groove 645 is a non-penetrating groove portion in the thickness direction.

[0076] (Aperture 640) The opening 640 is located in a position that connects to the cleaning channel 24 of the nozzle body 5. In other words, water supplied to the cleaning groove 64 is sent to the cleaning channel 24 through the opening 640. The opening 640 is provided such that its opening width changes in the circumferential direction. The opening width here is the radial width dimension of the first member 6. Specifically, the opening 640 has a shape in which the opening width narrows as you move towards the first direction d1.

[0077] (bottomed groove 645) The bottomed groove 645 is arc-shaped overall and is provided such that its opening width changes in the circumferential direction. Specifically, the bottomed groove 645 has a shape in which the opening width narrows as you move towards the first direction d1.

[0078] The bottomed groove section 645 includes a plurality of bottomed grooves 641, 642 having different depths. In this embodiment, the plurality of bottomed grooves 641, 642 are two bottomed grooves 641, 642 that are located continuously with respect to each other in the circumferential direction.

[0079] Of the two bottomed grooves 641 and 642, one bottomed groove 641 is positioned in the opposite direction to the first orientation d1 relative to the other bottomed groove 642. The bottomed groove 641 is positioned in the first orientation d1 relative to the opening 640. The bottom surface of the bottomed groove 641 includes an inclined surface 648 that is not parallel to the first surface 661. The inclined surface 618 is inclined such that it approaches the first surface 661 in the thickness direction as it moves towards the first orientation d1.

[0080] The bottom surface of the bottomed groove 642 is parallel to the first surface 661. The two bottomed grooves 641 and 642 are formed in a series, aligned in the circumferential direction. The inclined surface 648 of the bottomed groove 641 and the bottom surface of the bottomed groove 642 are continuous in the circumferential direction.

[0081] (Second component 7) The second member 7 is rotatably positioned relative to the nozzle body 5. In other words, the second member 7 is a rotating plate. The second member 7 is a disc-shaped member having thickness, radial, and circumferential directions. The second member 7 has a virtual central axis 70 extending in the thickness direction (see Figure 8).

[0082] The second member 7 is positioned coaxially with the first member 6. That is, the central axis 70 of the disc-shaped second member 7 coincides with the central axis 60 of the disc-shaped first member 6. The thickness direction of the second member 7 coincides with the thickness direction of the first member 6, the radial direction of the second member 7 coincides with the radial direction of the first member 6, and the circumferential direction of the second member 7 coincides with the circumferential direction of the first member 6.

[0083] The second member 7 has a main opening 71 formed through the thickness direction and a sub-opening 72. The second member 7 further has a central hole 75 that is formed through the thickness direction. The central hole 75 is located at a position through which the central axis 70 of the second member 7 passes.

[0084] As shown in Figure 8, the main opening 71 is provided in the outer circumferential portion 78 of the second member 7. The sub-opening 72 and the central hole 75 are provided in the inner circumferential portion 79 of the second member 7. The outer circumferential portion 78 and the inner circumferential portion 79 are separated by a radial distance with respect to the central axis 70. With respect to the central axis 70, the range up to a predetermined radial distance is the inner circumferential portion 79, and the range beyond the predetermined radial distance is the outer circumferential portion 78.

[0085] In the circumferential direction of the second member 7, the main opening 71 and the sub-opening 72 are located at different positions from each other. In this embodiment, the main opening 71 and the sub-opening 72 are located 180 degrees apart from each other in the circumferential direction. The central hole 75 is a non-circular hole and is located radially inward from the sub-opening 72.

[0086] (Main opening 71) The main opening 71 is configured to communicate with the main groove 61 of the first member 6, depending on the relative rotational position of the second member 7 with respect to the first member 6. Here, communication between the main opening 71 and the main groove 61 means that in the thickness direction of the first member 6 and the second member 7, both the main opening 71 and the main groove 61 are in positions that overlap each other. In other parts of the first member 6, communication with the main opening 71 means that in the thickness direction of the first member 6 and the second member 7, that part and the main opening 71 are in positions that overlap each other.

[0087] The main opening 71 is open to the radially outward direction. The circumferential width of the main opening 71 is set to be larger towards the radially outward portion. The circumferential width of the main opening 71 is set to be smaller than the circumferential width of the main groove portion 61 of the first member 6. Therefore, in this embodiment, the communication between the main opening 71 and the main groove portion 61 means, in detail, that all or part of the main opening 71 communicates with a part of the main groove portion 61.

[0088] In this embodiment, depending on the relative rotational position of the second member 7 with respect to the first member 6, it is possible to select between a state in which the main opening 71 of the second member 7 communicates with the main groove 61 of the first member 6, and a state in which the main opening 71 of the second member 7 does not communicate with the main groove 61 of the first member 6. Furthermore, depending on the relative rotational position of the second member 7 with respect to the first member 6, it is possible to select a region of the main groove 61 of the first member 6 that communicates with the main opening 71 of the second member 7.

[0089] In this embodiment, the main opening 71 is configured to be selectively able to communicate with one of the bidet groove 63, the cleaning groove 64, and the main groove 61, depending on the relative rotational position of the second member 7 with respect to the first member 6.

[0090] In other words, when the main opening 71 is in a predetermined relative rotation position, the main opening 71 communicates with the bidet groove 63 but not with the cleaning groove 64 and the main groove 61. When the main opening 71 is in a different relative rotation position, the main opening 71 communicates with the cleaning groove 64 but not with the bidet groove 63 and the main groove 61. When the main opening 71 is in yet another relative rotation position, the main opening 71 communicates with the main groove 61 but not with the bidet groove 63 and the cleaning groove 64.

[0091] The circumferential width of the main opening 71 is set to be smaller than the circumferential width of the bidet groove 63, and also smaller than the circumferential width of the cleaning groove 64. Therefore, communication between the main opening 71 and the bidet groove 63 means, in detail, that all or part of the main opening 71 communicates with a part of the bidet groove 63. Communication between the main opening 71 and the cleaning groove 64 means, in detail, that all or part of the main opening 71 communicates with a part of the cleaning groove 64. Depending on the relative rotational position of the second member 7 with respect to the first member 6, it is possible to select a region of the bidet groove 63 of the first member 6 that communicates with the main opening 71 of the second member 7, and it is also possible to select a region of the cleaning groove 64 of the first member 6 that communicates with the main opening 71 of the second member 7.

[0092] (Sub-opening 72) The sub-opening 72 is configured to communicate with the sub-groove 62 of the first member 6, depending on the relative rotational position of the second member 7 with respect to the first member 6. Here, communication between the sub-opening 72 and the sub-groove 62 means that both the sub-opening 72 and the sub-groove 62 are in positions that overlap each other in the thickness direction of the first member 6 and the second member 7.

[0093] The circumferential width of the sub-opening 72 is set to be larger towards the radially outer portion. The circumferential width of the sub-opening 72 is set to be smaller than the circumferential width of the sub-groove 62 of the first member 6. Therefore, the communication between the sub-opening 72 and the sub-groove 62 means, in detail, that all or part of the sub-opening 72 communicates with a part of the sub-groove 62.

[0094] In this embodiment, depending on the relative rotational position of the second member 7 with respect to the first member 6, it is possible to select between a state in which the sub-opening 72 of the second member 7 communicates with the sub-groove 62 of the first member 6, and a state in which the sub-opening 72 of the second member 7 does not communicate with the sub-groove 62 of the first member 6. Furthermore, depending on the relative rotational position of the second member 7 with respect to the first member 6, it is possible to select a region of the sub-groove 62 of the first member 6 that communicates with the sub-opening 72 of the second member 7.

[0095] (Motor 81) As shown in Figures 3 and 4, the motor 81 is fixed to the nozzle body 5. The first member 6 and the second member 7 are positioned between the main flow path 21 and the sub-flow path 22 of the nozzle body 5 and the motor 81. The second member 7 is located between the first member 6 and the motor 81 and is rotated around its central axis 70 by the driving force transmitted from the motor 81.

[0096] The motor 81 includes a rotationally driven output shaft 814. The output shaft 814 is fitted to the intermediate member 85 so as to rotate integrally with it. The intermediate member 85 has a projection 851 that is fitted to the central hole 75 of the second member 7 so as to rotate integrally with it. Of the projection 851, the tip portion that protrudes through the central hole 75 of the second member 7 is rotatably inserted into the central groove 65 of the first member 6.

[0097] The second member 7 is rotated by the output shaft 814 of the motor 81 via the intermediate member 85. The relative rotational position of the second member 7 with respect to the first member 6 is appropriately changed by the output of the motor 81.

[0098] (Biasing member 82) As shown in Figures 4 and 6, the biasing member 82 is a coil spring positioned in a compressed state between the intermediate member 85 and the second member 7. The second member 7 is constantly biased toward the first member 6 by the biasing force exerted by the biasing member 82.

[0099] The second member 7 is constantly biased toward the first member 6 by the biasing member 82 and rotated by the motor 81.

[0100] (Three switching modes) According to the sanitary cleaning device 1 of this embodiment, the relative rotation of the second member 7 with respect to the first member 6 changes at least one of the main water volume, which is the amount of main water flow W1 flowing into the main flow path 21 through the main opening 71 of the second member 7 and the main groove portion 61 of the first member 6, and the sub-water volume, which is the amount of sub-water flow W2 flowing into the sub-flow path 22 through the sub-opening 72 of the second member 7 and the sub-groove portion 62 of the first member 6. As a result, one of the first switching mode, second switching mode, and third switching mode described below is selected. Depending on the selection of the switching mode, the state of the water flow discharged from the nozzle 2 is switched between multiple states.

[0101] (First switching mode) Figures 9, 10, and 11 show the relative positional relationship between the first member 6 and the second member 7 when in the first switching mode.

[0102] In the first switching mode, the main opening 71 of the second member 7 communicates with the portion of the main groove 61 of the first member 6 that includes the bottomed groove 611. The sub-opening 72 of the second member 7 communicates with the portion of the sub-groove 62 of the first member 6 that includes the bottomed groove 621.

[0103] In the first switching mode, the switching device 47 causes approximately equal amounts of water to flow into the main flow path 21 and the sub-flow path 22 of the nozzle 2, and consequently, approximately equal amounts of water to flow into the first inlet hole 251 and the second inlet hole 261. At this time, the flow rate ratio of the main water flow to the sub-water flow is 1 to 1.5:1.

[0104] When the second member 7 is in the relative rotation position shown in Figure 9, the total amount of water used for washing, which is the sum of the main water volume and the sub-water volume, is in the first stage, which is relatively small in the first switching mode. In this relative rotation position, the main opening 71 of the second member 7 communicates with the bottomed groove 611 portion of the main groove 61 of the first member 6. The sub-opening 72 of the second member 7 communicates with the bottomed groove 621 portion of the sub-groove 62 of the first member 6.

[0105] When the second member 7 is in the relative rotation position shown in Figure 10, the amount of cleaning water becomes a second stage, which is greater than the first stage. In this relative rotation position, the main opening 71 of the second member 7 communicates with the bottomed groove 611 portion of the main groove 61 of the first member 6 and the end of the first region R11 of the opening 610. The sub-opening 72 of the second member 7 communicates with the bottomed groove 621 portion of the sub-groove 62 of the first member 6, the end of the bottomed groove 624 and the end of the opening 620.

[0106] When the second member 7 is in the relative rotation position shown in Figure 11, the amount of cleaning water becomes the third stage, which is greater than the second stage. In this relative rotation position, the main opening 71 of the second member 7 communicates with the bottomed groove 611 portion of the main groove 61 of the first member 6 and the end of the first region R11 of the opening 610. The area of ​​the first region R11 of the opening 610 that communicates with the main opening 71 of the second member 7 is larger in the third stage than in the second stage. The sub-opening 72 of the second member 7 communicates with the end of the bottomed groove 621 portion of the sub-groove 62 of the first member 6, the bottomed groove 624 portion, and the end of the opening 620. The area of ​​the opening 620 of the sub-groove 62 that communicates with the sub-opening 72 of the second member 7 is larger in the third stage than in the second stage.

[0107] (State of the discharged water flow) When the switching device 47 is in the first switching mode (i.e., when the flow rate ratio between the main water volume and the sub water volume is within the range of 1 to 1.5:1), a continuous flow of water (hereinafter referred to as the "continuous state") is discharged from the through hole 272 of the nozzle 2, as shown in Figure 22.

[0108] A continuous stream of water is also called a soft stream. Localized washing using a soft stream of water is called soft washing.

[0109] The following further explains how a continuous water flow is generated. The generation of a continuous water flow involves the actions shown in Figures 19 through 22. Note that the generation of a continuous water flow may also start from the action shown in Figure 22.

[0110] As shown in Figure 19, the main water flow W1 is injected into the upper portion 252 from the first inlet hole 251. The main water flow W1 that has entered the upper portion 252 passes through the air inside the upper portion 252 and the through hole 272 without contacting either the inner surface of the upper portion 252 or the inner surface 2720 of the through hole 272, and is discharged from the through hole 272. This state is referred to as the "first discharge state".

[0111] In the first discharge state, the sub-water flow W2 flows from the second inlet hole 261 into the first gap 201 and accumulates in the first gap 201. Due to the surface tension of the water, the sub-water flow W2 does not flow out from the air supply hole 262. Thus, in the first discharge state, the main water flow W1 that flows into the upper part 252 from the first inlet hole 251 is discharged from the through hole 272, but the sub-water flow W2 that flows into the first gap 201 from the second inlet hole 261 is not discharged from the through hole 272. In the first discharge state, the sub-water flow W2 that flows into the first gap 201 from the second inlet hole 261 accumulates in the first gap 201 and does not reach the second gap 202, and air accumulates in the second gap 202.

[0112] Next, when the sub-water flow W2 fills the first gap 201, as shown in Figures 20 and 21, the sub-water flow W2 passes through the second gap 202 and flows into the interior of the first cylindrical portion 25, exceeding the upper end of the first cylindrical portion 25. In this embodiment, the sub-water flow W2 flows into the inside of the first cylindrical portion 25 from at least a portion of the circumferential direction of the upper end of the first cylindrical portion 25.

[0113] At this time, the sub-water flow W2 collides with the main water flow W1 and is pulled in the direction of the flow of the main water flow W1, and flows into the interior of the first cylindrical section 25, filling the interior of the first cylindrical section 25 with the main water flow W1 and the sub-water flow W2. Then, as shown in Figure 22, the water mixed with the main water flow W1 and the sub-water flow W2 is discharged from the through hole 272. The water mixed with the main water flow W1 and the sub-water flow W2 is discharged from the through hole 272 with a diameter (in other words, cross-sectional area) that is approximately the same as the lower end opening 2722 of the through hole 272 (see Figure 5), and a gap is created between it and the inner circumferential surface 2720 of the through hole 272. This state is called the "second discharge state".

[0114] In the second discharge state, the ejector effect occurs due to the velocity difference between the main water flow W1 in the first inlet hole 251 and the velocity of the main water flow W1 and sub-water flow W2 in the upper part 252 of the first cylindrical section 25, and because the first cylindrical section 25 is filled with the main water flow W1 and sub-water flow W2.

[0115] This creates a negative pressure at the downstream end of the first inlet 251, but this negative pressure is not strong enough to cause air bubbles to be introduced. Therefore, when generating a continuous water flow, it is possible to generate a jet of water, which is a continuous water flow without air bubbles. The continuous water flow maintains a continuous flow in the space after being discharged from the through hole 272.

[0116] (Second switching mode) Figures 12, 13, and 14 show the relative positional relationship between the first member 6 and the second member 7 when in the second switching mode.

[0117] In the second switching mode, the main opening 71 of the second member 7 communicates only with the opening 610 of the main groove 61 of the first member 6. The main opening 71 of the second member 7 does not communicate with the bottomed groove 615 of the main groove 61 of the first member 6. The sub-opening 72 of the second member 7 communicates with a part of the sub-groove 62 of the first member 6, but this part does not include the bottomed groove 621.

[0118] In the second switching mode, the switching device 47 switches the flow rate ratio so that approximately 40% of the water from the main flow path 21 flows into the sub-flow path 22 of the nozzle 2, that is, it switches the flow rate ratio so that approximately 40% of the water from the first inlet hole 251 flows into the second inlet hole 261 of the nozzle 2. At this time, the flow rate ratio of the main water volume to the sub-water volume becomes 2 to 3:1.

[0119] When the second member 7 is in the relative rotation position shown in Figure 12, the total amount of water used for washing, which is the sum of the main water volume and the sub-water volume, is in the third stage, which is relatively large in the second switching mode. In this relative rotation position, the main opening 71 of the second member 7 communicates only with the opening 610 of the main groove 61 of the first member 6. The main opening 71 of the second member 7 communicates with the portion of the opening 610 that includes the maximum width region R16. More specifically, the main opening 71 of the second member 7 communicates with the end of the first region R11 which is continuous with the maximum width region R16, the maximum width region R16, and the end of the second region R12 which is continuous with the maximum width region R16.

[0120] The sub-opening 72 of the second member 7 communicates with the opening 620 of the sub-groove 62 of the first member 6, but does not communicate with the portions of the bottomed groove 621 and bottomed groove 624. More specifically, the sub-opening 72 of the second member 7 communicates with the end of the opening 620 and the end of the bottomed groove 622 that is continuous with the opening 620.

[0121] When the second member 7 is in the relative rotation position shown in Figure 13, the amount of cleaning water becomes the second stage, which is smaller than the third stage. In this relative rotation position, the main opening 71 of the second member 7 communicates only with the opening 610 of the main groove 61 of the first member 6, and more specifically, with a part of the second region R12 of the opening 610. The sub-opening 72 of the second member 7 communicates with a part of the bottomed groove 622 of the sub-groove 62 of the first member 6.

[0122] When the second member 7 is in the relative rotation position shown in Figure 14, the amount of cleaning water is in the first stage, which is smaller than the second stage. In this relative rotation position, the main opening 71 of the second member 7 communicates with another part of the second region R12 of the opening 610 of the first member 6. The area of ​​the part of the second region R12 of the opening 610 that communicates with the main opening 71 of the second member 7 is smaller in the first stage than in the second stage. The sub-opening 72 of the second member 7 communicates with another part of the bottomed groove 622 of the sub-groove 62 of the first member 6.

[0123] (State of the discharged water flow) When the switching device 47 is in the second switching mode (i.e., when the flow rate ratio of the main water volume to the sub water volume is within the range of 2 to 3:1), a continuous flow of water mixed with air bubbles, as shown in Figure 25 (hereinafter referred to as the "two-phase state"), is discharged from the passage hole 272 of the nozzle 2.

[0124] A two-phase water flow is also called a bubble-state water flow. Localized washing using a bubble-state water flow is called bubble washing.

[0125] The following describes how a two-phase water flow is generated. In the generation of a two-phase water flow, the actions shown in Figures 19 to 21, which were described for the continuous state, first occur. Alternatively, the generation of a two-phase water flow may start from the actions shown in Figure 22.

[0126] When a two-phase water flow is generated, as shown in Figure 23, the water, which is a mixture of the main water flow W1 and the sub-water flow W2, spreads to the inner circumferential surface 2720 inside the through hole 272, filling the inside of the through hole 272. The water, which is a mixture of the main water flow W1 and the sub-water flow W2, is discharged from the through hole 272 with a diameter (in other words, cross-sectional area) that is approximately the same as the upper end opening 2721 of the through hole 272.

[0127] In this discharge state, an ejector effect occurs due to the velocity difference between the main water flow W1 in the first inlet hole 251 and the velocity of the main water flow W1 and sub-water flow W2 in the upper part 252 of the first cylindrical section 25, and because the upper part 252 of the first cylindrical section 25 is filled with the main water flow W1 and sub-water flow W2. This generates negative pressure at the downstream end of the first inlet hole 251. Furthermore, an ejector effect occurs due to the velocity difference between the flow velocity in the lower end opening 2722 of the through hole 272 and the flow velocity in the part of the through hole 272 above the lower end opening 2722, and because the through hole 272 is filled with the main water flow W1 and sub-water flow W2. This generates negative pressure at the lower end opening 2722 of the through hole 272. In other words, when a two-phase water flow is generated, negative pressure is created at two locations: the downstream end of the first inlet hole 251 and the lower end opening 2722 of the through hole 272. This causes air to be drawn in through the air supply hole 262.

[0128] As shown in Figure 24, the air drawn in from the air intake hole 262 is pulled from the air intake hole 262 through the first gap 201 and the second gap 202 to the negative pressure generation point at the downstream end of the first inlet hole 251 and flows into the upper part 252 of the first cylindrical section 25. The air drawn in from the air intake hole 262 is pulled to the negative pressure generation point at the lower end opening 2722 of the through hole 272 and collides with the water flow of the main water flow W1. Then, the air drawn in from the air intake hole 262 is pulled by the flow of the main water flow W1 and flows into the interior of the through hole 272.

[0129] The air that flows into the negative pressure generation point at the lower end opening 2722 of the through hole 272 is turned into fine bubbles by the flow of the main water flow W1 and mixes with the main water flow W1 and sub-water flow W2 inside the through hole 272.

[0130] In this case, when a two-phase water flow is generated, negative pressure is generated at two locations: the downstream end of the first inlet 251 and the lower end opening 2722 of the through hole 272. As a result, the air drawn in from the air supply hole 262 is dispersed and moves toward these two locations. Therefore, the air drawn in from the air supply hole 262 has difficulty reaching the negative pressure generation point at the downstream end of the first inlet 251, and the release of the negative pressure is suppressed, so the state in which air is drawn in from the air supply hole 262 continues. This maintains a state in which fine bubbles are mixed throughout the main water flow W1 and sub-water flow W2 in the through hole 272.

[0131] Furthermore, when a two-phase water flow is generated, the air that is pulled towards the negative pressure generation point at the downstream end of the first inlet hole 251 is prevented from reaching the downstream end of the first inlet hole 251 by the water pressure of the sub-water flow W2. In this respect as well, the state in which fine bubbles are mixed throughout the main water flow W1 and sub-water flow W2 in the through hole 272 is maintained.

[0132] As described above, a two-phase water flow as shown in Figure 25 is generated.

[0133] (Third switching mode) Figures 15, 16, and 17 show the relative positional relationship between the first member 6 and the second member 7 when in the third switching mode.

[0134] In the third switching mode, the main opening 71 of the second member 7 communicates with the third region R13 of the opening 610 in the main groove 61 of the first member 6. The sub-opening 72 of the second member 7 communicates with a portion of the sub-groove 62 of the first member 6, but this portion does not include the opening 620.

[0135] In the third switching mode, the switching device 47 switches the flow rate ratio so that approximately 25% of the water from the main flow rate 21 flows into the sub-flow channel 22 of the nozzle 2, that is, the flow rate ratio is switched so that approximately 25% of the water from the first inlet port 251 flows into the second inlet port 261 of the nozzle 2. At this time, the flow rate ratio of the main water volume to the sub-water volume becomes 3 to 7:1.

[0136] When the second member 7 is in the relative rotation position shown in Figure 15, the total amount of water used for washing, which is the sum of the main water volume and the sub-water volume, is a relatively small first stage in the third switching mode. In this relative rotation position, the main opening 71 of the second member 7 communicates with the end of the third region R13 of the opening 610 of the main groove 61 of the first member 6. The sub-opening 72 of the second member 7 communicates with a part of the bottomed groove 623 of the sub-groove 62 of the first member 6, which is a groove shallower than the bottomed groove 622.

[0137] When the second member 7 is in the relative rotation position shown in Figure 16, the amount of cleaning water becomes a second stage, which is greater than the first stage. In this relative rotation position, the main opening 71 of the second member 7 communicates with another part of the third region R13 of the opening 610 of the main groove 61 of the first member 6. The area of ​​the third region R13 of the opening 610 that communicates with the main opening 71 of the second member 7 is larger in the second stage than in the first stage. The sub-opening 72 of the second member 7 communicates with another part of the bottomed groove 623 of the sub-groove 62 of the first member 6.

[0138] When the second member 7 is in the relative rotation position shown in Figure 17, the amount of cleaning water becomes the third stage, which is greater than the second stage. In this relative rotation position, the main opening 71 of the second member 7 communicates with another part of the third region R13 of the opening 610 of the main groove 61 of the first member 6, and with the end of the bottomed groove 612 (specifically, the end of the inclined surface 618). The area of ​​the third region R13 of the opening 610 that communicates with the main opening 71 of the second member 7 is larger in the third stage than in the second stage. The sub-opening 72 of the second member 7 communicates with another part of the bottomed groove 623 of the sub-groove 62 of the first member 6.

[0139] (State of the discharged water flow) When the switching device 47 is in the third switching mode (i.e., when the flow rate ratio of the main water flow to the sub water flow is within the range of 3 to 7:1), a continuous water flow is discharged from the through hole 272 of the nozzle 2, and then the water flow changes to an intermittent water flow in space (hereinafter referred to as the "intermittent state") (see Figure 29).

[0140] A water flow in an intermittent state is also called a power beat state water flow. Localized washing using a power beat state water flow is also called power beat washing.

[0141] The following describes how intermittent water flow (i.e., intermittent water flow) is generated in space. In the generation of intermittent water flow, the actions shown in Figures 19 to 21, which were described for continuous flow, first occur. When intermittent water flow is generated, the first discharge state and the second discharge state, which were described for continuous flow, are repeated.

[0142] In the second discharge state, an ejector effect occurs due to the velocity difference between the main water flow W1 in the first inlet hole 251 and the main water flow W1 and sub-water flow W2 in the upper part 252 of the first cylindrical section 25, as well as the fact that the first cylindrical section 25 is filled with the main water flow W1 and sub-water flow W2. As a result, negative pressure is generated at the downstream end of the first inlet hole 251, and air is drawn in from the air supply hole 262.

[0143] When an intermittent water flow is generated, as shown in Figure 26, the air drawn in from the air intake hole 262 is pulled through the first gap 201 and the second gap 202, into the negative pressure generation point at the downstream end of the first inlet hole 251, and flows into the first cylindrical section 25, and is also pulled by the flow of the main water flow W1 and flows into the through hole 272.

[0144] Next, the air that flows into the upper part 252 of the first cylindrical section 25 and the through hole 272 spreads out to surround the main water flow W1, as shown in Figure 27, blocking the inflow of the sub-water flow W2 into the main water flow W1. Furthermore, when the system is released with the upper part 252 of the first cylindrical section 25 filled with the main water flow W1 and the sub-water flow W2, the ejector effect is released, the intake of air ceases, and the system returns to the first discharge state. As a result, the flow, which was a wide jet formed by the merging of the sub-water flow W2 with the main water flow W1, switches to a narrow jet consisting only of the main water flow W1. In this way, the first discharge state and the second discharge state are repeated.

[0145] Figure 28 shows state 1 of the water flow in the space after discharge from nozzle 2. Figure 29 shows state 2 of the water flow in the space after discharge from nozzle 2. The first flying water W10 shown in these figures is water in the first discharge state, where only the main water flow W1 is discharged into the air through the through hole 272. The second flying water W12 is water in the second discharge state, where both the main water flow W1 and the sub-water flow W2 are discharged through the through hole 272. The flow velocity of the first flying water W10 is faster than the flow velocity of the second flying water W12. As a result, as shown in Figure 29, the first flying water W10 separates from the subsequent second flying water W12 and combines with the preceding second flying water W12 to form a water mass, causing the water discharged from nozzle 2 to become an intermittent water flow in the space.

[0146] According to the above-described sanitary cleaning device 1, by changing the flow rate ratio of the main water volume and the sub-water volume using the switching device 47, three types of water flow can be selectively discharged from the common passage hole 272 of the nozzle 2. Moreover, according to the above-described sanitary cleaning device 1, for each of the three types of water flow, it is possible to selectively realize a first stage with a relatively small amount of water flow, a second stage with a medium amount of water flow, and a third stage with a relatively large amount of water flow, making it possible to respond precisely to the preferences and circumstances of the user sitting on the toilet seat 30.

[0147] (The order in which the water flow changes) Figure 18 shows the relationship between the rotational position of the second member 7 and the state of the water flow. In this embodiment, as the second member 7 rotates relative to the first orientation d1, cleaning, posterior washing, and bidet washing can be repeatedly switched in this order, as shown from right to left in Figure 18. Also, when the second member 7 rotates relative to the opposite of the first orientation d1, cleaning, bidet washing, and posterior washing can be repeatedly switched in this order, as shown from left to right in Figure 18.

[0148] More specifically, as the second member 7 rotates relative to the first orientation d1, the water volume during posterior washing switches in the order of continuous, two-layer, and intermittent states. Furthermore, within the continuous state, as the second member 7 rotates relative to the first orientation d1, the state switches in the order of first, second, and third stages. In other words, the washing water volume gradually increases while maintaining a continuous state. Within the continuous state, as the second member 7 rotates relative to the first orientation d1, the state switches in the order of third, second, and first stages. In other words, the washing water volume gradually decreases while maintaining a two-layer state. Within the intermittent state, as the second member 7 rotates relative to the first orientation d1, the state switches in the order of first, second, and third stages. In other words, the washing water volume gradually increases while maintaining an intermittent state. When the second member 7 rotates relative to the opposite of the first orientation d1, the switching order is the reverse of the above.

[0149] In bidet washing, as the second member 7 rotates relative to the first orientation d1, the amount of washing water gradually decreases, and when the second member 7 rotates relative to the opposite orientation d1, the amount of washing water gradually increases with the relative rotation.

[0150] According to the sanitary washing device 1 of this embodiment, by changing the relative rotational position of the second member 7 with respect to the first member 6, it is possible to selectively generate multiple states of water flow for posterior washing and to adjust the flow rate of the water flow. Specifically, by changing the relative rotational position of the second member 7 with respect to the first member 6, it is possible to discharge a continuous water flow from the nozzle 2 in multiple stages of washing water volume, to discharge a two-layer water flow from the nozzle 2 in multiple stages of washing water volume, and to discharge an intermittent water flow from the nozzle 2 in multiple stages of washing water volume. In addition, it is possible to selectively perform posterior washing, bidet washing, and cleaning.

[0151] Furthermore, in the sanitary cleaning device 1 of this embodiment, the flow rate of the water can be adjusted (i.e., switching between the first, second, and third stages) without installing a flow rate adjustment pump. Therefore, there is no problem of noise generated by the operation of a flow rate adjustment pump, nor is there a problem of needing space to install a flow rate adjustment pump.

[0152] (modified version) Next, we will describe some variations of the sanitary cleaning device 1 described above. The variations shown below can be combined as appropriate.

[0153] The state of the water flow discharged from the nozzle 2 of the above-described sanitary cleaning device 1 is selected from three states: a continuous state, a two-phase state, and an intermittent state. However, it may be selected from multiple states, including these three states plus other states; from two of these three states; from multiple states, including two of these three states plus other states; or from multiple states, including one of these three states plus other states. For example, the nozzle 2 may be configured to selectively discharge only two-phase and intermittent water flows, and it is not essential that it can discharge all water flows in the continuous, two-phase, and intermittent states.

[0154] The structure of nozzle 2 is not limited to the structures shown in Figures 4 and 5, and is not limited to any structure in which the water flow switches between multiple states in accordance with changes in the flow rate ratio of the main water volume and the sub-water volume.

[0155] In the first member 6 of the sanitary cleaning device 1 described above, a bidet groove 63 and a cleaning groove 64 are provided on the outer circumference 68. However, at least one of the bidet groove 63 and the cleaning groove 64 may be provided on another part of the first member 6. Also, at least one of the bidet groove 63 and the cleaning groove 64 may not be provided on the first member 6.

[0156] In the first member 6 of the sanitary cleaning device 1 described above, the sub-groove 62 is provided in the inner circumference 69, but the sub-groove 62 may be provided in other parts of the first member 6. For example, the sub-groove 62 may be provided in the outer circumference 68, and consequently, the sub-opening 72 of the second member 7 may be provided in the outer circumference 78.

[0157] In the first member 6 of the above-described sanitary cleaning device 1, the sub-groove 62 includes a bottomed groove 625 in addition to the opening 620, but it is also possible that the sub-groove 62 does not include the bottomed groove 625 and consists only of the opening 620.

[0158] In the first member 6 of the sanitary cleaning device 1 described above, the bottomed groove portion 625 of the sub-groove portion 62 includes four bottomed grooves 621, 622, 623, and 624 with different depths. However, the number of bottomed grooves with different depths is not limited to this, and may include two, three, five or more bottomed grooves, or the bottomed groove portion 625 may be composed of a single bottomed groove.

[0159] In the first member 6 of the sanitary cleaning device 1 described above, the main groove 61 is provided on the outer circumference 68, but the main groove 61 may be provided on other parts of the first member 6. For example, the main groove 61 may be provided on the inner circumference 69, and consequently, the main opening 71 of the second member 7 may be provided on the inner circumference 79.

[0160] In the first component 6 of the above-described sanitary cleaning device 1, the main groove 61 includes a bottomed groove 615 in addition to the opening 610, but it is also possible that the main groove 61 does not include the bottomed groove 615 and is composed only of the opening 610.

[0161] In the first member 6 of the sanitary cleaning device 1 described above, the bottomed groove portion 615 of the main groove portion 61 includes two bottomed grooves 611 and 612 with different depths. However, the number of bottomed grooves with different depths is not limited to this, and it may include three or more bottomed grooves, or the bottomed groove portion 625 may be composed of a single bottomed groove.

[0162] In the first member 6 of the sanitary cleaning device 1 described above, the opening 610 of the main groove 61 is provided such that the opening width gradually changes in the circumferential direction. However, the change in the opening width of the opening 610 is not limited to this; for example, the opening width may be provided to change in steps, or the opening width may be provided to be constant.

[0163] (summary) A first embodiment of the sanitary washing device 1 according to the present disclosure comprises a nozzle 2 that discharges a stream of water toward a part of a seated human body, and a switching device 47 that switches the mode of supplying the water stream to the nozzle 2. The nozzle 2 includes a nozzle head 20, a main flow path 21 for supplying a main water stream W1 to the nozzle head 20, and a sub-flow path 22 for supplying a sub-water stream W2 that merges with the main water stream W1 to the nozzle head 20. The switching device 47 includes a first member 6 and a second member 7 that rotates relative to the first member 6. The first member 6 includes a main groove 61 provided with an opening 610 connected to the main flow path 21, and a sub-groove 62 provided with an opening 620 connected to the sub-flow path 22. The second member 7 includes a main opening 71 configured to communicate with the main groove 61 of the first member 6, depending on the relative rotational position of the second member 7 with respect to the first member 6, and a sub-opening 72 configured to communicate with the sub-groove 62 of the first member 6, depending on the relative rotational position of the second member 7 with respect to the first member 6. In the first embodiment of the sanitary cleaning device 1, at least one of the main water flow rate through the main opening 71 of the second member 7 and the main groove 61 of the first member 6, and the sub-water flow rate through the sub-opening 72 of the second member 7 and the sub-groove 62 of the first member 6, is changed depending on the relative rotational position of the second member 7.

[0164] According to this embodiment, by changing the relative rotational position of the second member 7 with respect to the first member 6, at least one of the main water flow rate and the sub-water flow rate can be changed, thereby selectively generating water flows in multiple states and adjusting the flow rate. In other words, the sanitary cleaning device 1 of the first embodiment can selectively generate water flows in multiple states and adjust the flow rate without using a pump for flow rate adjustment. Therefore, the sanitary cleaning device 1 of the first embodiment does not have the problem of generating operating noise from a pump for flow rate adjustment, nor does it have the problem of requiring space to install a pump for flow rate adjustment.

[0165] In the sanitary cleaning apparatus 1 of the second embodiment of the present disclosure, in the configuration of the first embodiment, the state of the water flow discharged from the nozzle 2 is switched between a plurality of states by changing at least one of the main water volume and the sub water volume. The plurality of states include both or one of a two-phase state that maintains a continuous flow mixed with air bubbles and an intermittent state in which the water flow changes to an intermittent flow after discharge.

[0166] According to this embodiment, by changing the relative rotational position of the second member 7 with respect to the first member 6, the state of the water flow can be switched between multiple states, including both or one of a two-layer state and an intermittent state, and the flow rate of the water flow can be adjusted.

[0167] The sanitary cleaning device 1 of the third embodiment of the present disclosure is configured such that, in the configuration of the first embodiment, the state of the water flow discharged from the nozzle 2 switches between a plurality of states by changing at least one of the main water volume and the sub water volume. The plurality of states include a continuous state that maintains a continuous flow, a two-phase state that maintains a continuous flow mixed with air bubbles, and an intermittent state in which the water flow changes to an intermittent flow after discharge.

[0168] According to this embodiment, by changing the relative rotational position of the second member 7 with respect to the first member 6, the state of the water flow can be switched between multiple states, including a continuous state, a two-layer state, and an intermittent state, and the flow rate of the water flow can be adjusted.

[0169] The fourth aspect of the sanitary cleaning device 1 according to the present disclosure, in any one of the first to third aspects, further includes a bidet channel 23 and a cleaning channel 24 in the nozzle 2. The first member 6 further includes a bidet groove 63 provided with an opening 630 connected to the bidet channel 23, and a cleaning groove 64 provided with an opening 640 connected to the cleaning channel 24. The main opening 71 of the second member 7 is configured to be selectively connected to one of the main groove 61, the bidet groove 63, and the cleaning groove 64, depending on the relative rotational position of the second member 7.

[0170] According to this embodiment, by changing the relative rotational position of the second member 7 with respect to the first member 6, it is possible to selectively generate water flows in multiple states and adjust the flow rate of the water, as well as selectively perform bidet washing and cleaning of the nozzle 2.

[0171] In the fifth aspect of the sanitary cleaning device 1 according to this disclosure, in the configuration of the fourth aspect, the main groove 61, the bidet groove 63, and the cleaning groove 64 are provided on the outer circumference 68 of the first member 6. The sub-groove 62 is provided on the inner circumference 69 of the first member 6.

[0172] In this embodiment, the sub-groove 62 is provided on the inner circumferential portion 69 of the first member 6 rather than the outer circumferential portion 68, thereby enabling the selection of the water flow state and flow rate adjustment, bidet cleaning, and nozzle cleaning to be effectively achieved by a single pair of first member 6 and second member 7.

[0173] In the sixth embodiment of the sanitary cleaning apparatus 1 relating to this disclosure, in any one of the first to fifth embodiments, the sub-groove 62 is further provided with a bottomed groove 625 that extends circumferentially from the opening 620 of the sub-groove 62.

[0174] In this embodiment, depending on the relative rotational position of the second member 7, either the opening 620 of the first member 6 communicates with the sub-opening 72 of the second member 7, or the closed-bottom groove 625 of the first member 6 communicates with the sub-opening 72 of the second member 7. Therefore, depending on the relative rotational position of the second member 7, it becomes possible to finely adjust the amount of sub-water supplied through the sub-groove 62.

[0175] The sanitary cleaning device 1 of the seventh aspect of this disclosure, in the configuration of the sixth aspect, has a bottomed groove 625 of the sub-groove 62 that includes a plurality of bottomed grooves 621, 622, 623, and 624 having different depths.

[0176] According to this embodiment, depending on the relative rotational position of the second member 7, either the opening 620 of the first member 6 communicates with the sub-opening 72 of the second member 7, or one of the multiple bottomed grooves 621, 622, 623, 624 of the first member 6 communicates with the sub-opening 72 of the second member 7. Therefore, depending on the relative rotational position of the second member 7, it becomes possible to set the amount of sub-water supplied through the sub-groove 62 with even greater precision.

[0177] In the eighth aspect of the sanitary cleaning device 1 according to the present disclosure, in any one configuration of the first to seventh aspects, the main groove 61 is further provided with a bottomed groove 615 that extends circumferentially from the opening 610 of the main groove 61.

[0178] In this embodiment, depending on the relative rotational position of the second member 7, either the opening 610 of the first member 6 communicates with the main opening 71 of the second member 7, or the bottomed groove 615 of the first member 6 communicates with the main opening 71 of the second member 7. Therefore, depending on the relative rotational position of the second member 7, it becomes possible to finely adjust the amount of main water supplied through the main groove 61.

[0179] The ninth aspect of the sanitary cleaning device 1 according to the present disclosure, in the configuration of the eighth aspect, the bottomed groove portion 615 of the main groove portion 61 includes a plurality of bottomed grooves 611, 612 having different depths.

[0180] According to this embodiment, depending on the relative rotational position of the second member 7, either the opening 610 of the first member 6 communicates with the main opening 71 of the second member 7, or one of the multiple bottomed grooves 611, 612 of the first member 6 communicates with the main opening 71 of the second member 7. Therefore, depending on the relative rotational position of the second member 7, it becomes possible to set the main water volume supplied through the main groove 61 with greater precision.

[0181] In the 10th embodiment of the sanitary cleaning device 1 according to the present disclosure, in any one configuration of the first to 9th embodiments, the opening 610 of the main groove 61 is provided such that the opening width changes in the circumferential direction.

[0182] In this embodiment, depending on the relative rotational position of the second member 7, either the narrow portion of the opening 610 of the first member 6 communicates with the main opening 71 of the second member 7, or the wide portion of the opening 610 of the first member 6 communicates with the main opening 71 of the second member 7. Therefore, depending on the relative rotational position of the second member 7, it becomes possible to finely adjust the amount of main water supplied through the main groove 61.

[0183] This disclosure is not limited to the embodiments described above. For example, other embodiments realized by arbitrarily combining the components described herein, or by excluding some of the components, may also be embodiments of this disclosure. Furthermore, modifications obtained by applying various modifications to the embodiments described above, as conceivable by those skilled in the art, without departing from the spirit of this disclosure, i.e., the meaning of the language used in the claims, are also included in this disclosure. [Explanation of symbols]

[0184] 1. Sanitary cleaning device 2 nozzles 20 Nozzle Heads 201 First gap 202 Second gap 21 Main channel 22 Subchannels 23 Vide flow path 24 Cleaning channel 25 First cylinder part 250 center axis 251 First inflow hole 252 parts 26 Second cylinder part 260 center axis 261 Second inflow hole 262 Air intake holes 27 Lid 270 Lid body 271 Cylinder part 272 Passing hole 2720 ​​Inner surface 272 Top opening 272 Bottom opening 28 First channel 29 Second flow path 3 Toilet bowl 30 toilet seats 31 Control device 32 toilet bowls 4 Water circuit 40 Water supply connection port 41 Strainer 42 Water shut-off solenoid valve 43 Pressure Reducing Valve 44 Vacuum breaker 45 Heating device 450 buffer tank 46 Flow control valve 47 Switching device 48. Vent pipe 5. Nozzle body 6. First component 60 center axis 610 Aperture 611 Bottomed groove 612 Bottomed groove 615 Bottomed groove 618 Slope 61 Main groove section 62 Sub-groove section 620 aperture 621 Bottomed groove 622 Bottomed groove 623 Bottomed groove 624 Bottomed groove 625 Bottomed groove 628 Slope 629 Slope 63 Groove for bidet 630 Aperture 631 Bottomed groove 632 Bottomed groove 635 Bottomed groove 64 Cleaning groove 640 aperture 641 Bottomed groove 642 Bottomed groove 645 Bottomed groove 648 Slope 65 Central groove 661 Front page 662 Second side 68 Outer area 69 Inner circumference 7 Second component 70 center axis 71 Main opening 72 Sub-opening 75 Central hole 78 Outer area 79 Inner circumference 81 Motor 814 Output shaft 82 Biasing member 85 Intermediate member 851 Protrusion 87 pipes d1 First orientation D1 One direction G1 Length L1 Inner diameter L2 radius L3 radius R11 First area R12 Second area R13 Third area R16 Maximum width area S1 cross-sectional area S2 cross-sectional area S3 cross-sectional area S4 cross-sectional area W1 Main water flow W2 Sub-water flow W10 First flying water W12 Second flying water

Claims

1. A nozzle that discharges a stream of water towards the private parts of a seated person's body, The system comprises a switching device for switching the mode of supplying water flow to the nozzle, The nozzle includes a nozzle head, a main channel for supplying a main water flow to the nozzle head, and a subchannel for supplying a sub-water flow that merges with the main water flow to the nozzle head. The switching device includes a first member and a second member that rotates relative to the first member. The first member includes a main groove portion having an opening connected to the main flow path, and a sub-groove portion having an opening connected to the sub-flow path, The second member includes a main opening configured to communicate with the main groove of the first member depending on the relative rotational position of the second member with respect to the first member, and a sub-opening configured to communicate with the sub-groove of the first member depending on the relative rotational position of the second member with respect to the first member. Depending on the relative rotational position of the second member, at least one of the main water flow rate through the main opening of the second member and the main groove of the first member, and the sub-water flow rate through the sub-opening of the second member and the sub-groove of the first member is changed. Sanitary cleaning equipment.

2. The configuration is such that by changing at least one of the main water flow rate and the sub-water flow rate, the state of the water flow discharged from the nozzle switches between a plurality of states. The aforementioned plurality of states include both or either a two-phase state that maintains a continuous flow with bubbles mixed in, and an intermittent state that changes to an intermittent water flow after discharge. A sanitary cleaning device according to claim 1.

3. The configuration is such that by changing at least one of the main water flow rate and the sub-water flow rate, the state of the water flow discharged from the nozzle switches between a plurality of states. The aforementioned multiple states include a continuous state that maintains a continuous flow, a two-phase state that maintains a continuous flow with bubbles mixed in, and an intermittent state in which the water flow changes to an intermittent flow after discharge. A sanitary cleaning device according to claim 1.

4. The nozzle further includes a bidet channel and a cleaning channel. The first member further includes a bidet groove portion having an opening connected to the bidet flow path, and a cleaning groove portion having an opening connected to the cleaning flow path, The main opening of the second member is configured to be selectively connected to one of the main groove, the bidet groove, and the cleaning groove, depending on the relative rotational position of the second member. A sanitary cleaning device according to any one of claims 1 to 3.

5. The main groove, the bidet groove, and the cleaning groove are provided on the outer periphery of the first member. The sub-groove portion is provided on the inner circumference of the first member. A sanitary cleaning device according to claim 4.

6. The sub-groove portion is further provided with a bottomed groove portion that extends circumferentially from the opening of the sub-groove portion. A sanitary cleaning device according to any one of claims 1 to 3.

7. The bottomed groove portion of the sub-groove portion includes a plurality of bottomed grooves having different depths from each other. A sanitary cleaning device according to claim 6.

8. The main groove portion is further provided with a bottomed groove portion that extends circumferentially from the opening of the main groove portion. A sanitary cleaning device according to any one of claims 1 to 3.

9. The bottomed groove portion of the main groove portion includes a plurality of bottomed grooves with different depths. A sanitary cleaning apparatus according to claim 8.

10. The opening in the main groove is provided such that the opening width changes in the circumferential direction. A sanitary cleaning device according to any one of claims 1 to 3.

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