Sanitary cleaning equipment

Abstract

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

Description

Technical Field

[0001] Aspects of the present invention generally relate to a sanitary cleaning device.

Background Art

[0002] There is known a sanitary cleaning device provided with a nozzle that advances into a toilet bowl when performing local cleaning. As such a nozzle, one having a curved shape and moving back and forth along an arcuate track is known (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the flow path inside the nozzle is greatly curved, if the area of the flow path is not reduced when manufacturing the nozzle, there is a risk that the pins of the mold cannot be removed. Also, when the area of the flow path becomes small, there is a risk that the water discharge from the nozzle becomes unstable.

[0005] Aspects of the present invention have been made based on the recognition of such problems, and an object thereof is to provide a sanitary cleaning device capable of stably discharging water from a nozzle.

Means for Solving the Problems

[0006] The first invention is a sanitary cleaning device comprising a casing and a nozzle unit that moves back and forth between the casing and a toilet bowl, wherein the nozzle unit is curved to be convex upward and moves back and forth along an arc-shaped trajectory, the nozzle unit has a first flow path through which water flows and a second flow path connected to the first flow path, and the direction of water flow in the second flow path is different from that of the first flow path in the longitudinal direction of the nozzle unit.

[0007] In this sanitary cleaning device, the nozzle unit is curved so as to be convex upwards and moves back and forth along an arc-shaped trajectory. This allows the height dimension of the casing to be kept as low as possible, thereby improving the design of the sanitary cleaning device. The nozzle unit also has a first channel through which water flows and a second channel connected to the first channel. The direction of water flow in the second channel is different from that of the first channel in the longitudinal direction of the nozzle unit. As a result, the nozzle unit can ensure a sufficient channel area and provide stable water discharge by gradually changing the direction of water flow through the first and second channels.

[0008] The second invention is a sanitary cleaning device characterized in that, in the first invention, the first flow path and the second flow path each extend in a straight line.

[0009] This sanitary cleaning device makes it easier to remove the pins from the mold through the first and second flow channels, allowing for efficient manufacturing of nozzle units. Furthermore, because the flow channel area of ​​the first and second flow channels can be secured, stable water discharge can be achieved even when the nozzle unit has a curved shape.

[0010] The third invention is a sanitary cleaning device characterized in that, in the first or second invention, the nozzle unit comprises a nozzle body and a nozzle cover that covers the nozzle body and is curved to be convex upward, the nozzle body comprises a first cylindrical portion having the first flow path and a second cylindrical portion having the second flow path, and the outer surfaces of the first cylindrical portion and the second cylindrical portion each extend linearly in the longitudinal direction.

[0011] This sanitary cleaning device allows for a consistent wall thickness between the first and second flow channels and the outer surfaces of the first and second cylindrical sections, compared to, for example, a case where the first and second cylindrical sections are curved. Therefore, it is possible to ensure stable water discharge while guaranteeing the durability of the nozzle body.

[0012] The fourth invention is a sanitary cleaning device characterized in that, in the third invention, the second cylindrical portion is connected in front of the first cylindrical portion.

[0013] This sanitary cleaning device allows for improved durability of the nozzle body compared to, for example, a multi-stage nozzle unit in which the second cylindrical section protrudes from the inside of the first cylindrical section.

[0014] The fifth invention is a sanitary cleaning device characterized in that, in the first or second invention, the angle between the first flow path and the horizontal is smaller than the angle between the second flow path and the horizontal.

[0015] This sanitary cleaning device allows the cylindrical section where the flow path is formed to be shaped to conform to the nozzle cover, which is curved upwards and convexly, while maintaining a constant wall thickness. Therefore, compared to the case where the flow path is curved upwards, physical interference between the nozzle cover and the cylindrical section is suppressed, and the nozzle body can be made more compact.

[0016] The sixth invention is the fifth invention, wherein the nozzle unit includes a first cylindrical portion having the first flow path, a second cylindrical portion having the second flow path, and a nozzle head connected to the front of the second cylindrical portion and having a third flow path, and the angle formed by the third flow path and the horizontal is larger than the angle formed by the second flow path and the horizontal. A sanitary cleaning device characterized by this.

[0017] According to this sanitary cleaning device, the first cylindrical portion, the second cylindrical portion, and the nozzle head can be made more compact, so that it is easier to accommodate the first cylindrical portion, the second cylindrical portion, and the nozzle head in the nozzle cover.

[0018] The seventh invention is the sixth invention, wherein the lengths of the first cylindrical portion, the second cylindrical portion, and the nozzle head are the same. A sanitary cleaning device characterized by this.

[0019] According to this sanitary cleaning device, the change amount of the inclination angles of the first cylindrical portion, the second cylindrical portion, and the nozzle head can be made constant. Therefore, the influence of the pressure loss due to connecting a plurality of flow paths can be suppressed, and more stable water discharge can be performed.

Effect of the Invention

[0020] According to an aspect of the present invention, there is provided a sanitary cleaning device capable of stably discharging water from a nozzle unit.

Brief Description of the Drawings

[0021] [Figure 1] It is a perspective view showing a toilet device provided with a sanitary cleaning device according to an embodiment. [Figure 2] It is a block diagram showing a main part configuration of the sanitary cleaning device. [Figure 3] It is a cross-sectional view of the local cleaning device in the casing seen from the side. [Figure 4] It is a side view showing a state where the cover portion is removed from the main body portion of the support portion. [Figure 5]It is a side view showing a state where the gear and the belt are removed from the support portion in FIG. 4. [Figure 6] It is a perspective view of the local cleaning device seen from the obliquely rearward direction. [Figure 7] It is a side view showing the nozzle unit alone. [Figure 8] It is a side view showing a state where the nozzle cover is removed from the nozzle unit in FIG. 7. [Figure 9] It is a perspective view showing a state where the nozzle head is removed from the second cylindrical portion. [Figure 10] It is a cross-sectional view showing the flow path provided inside the nozzle body.

Mode for Carrying Out the Invention

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the same components are denoted by the same reference numerals, and detailed descriptions thereof are omitted as appropriate. FIG. 1 is a perspective view showing a toilet device provided with a sanitary cleaning device according to an embodiment. As shown in FIG. 1, a toilet device 300 according to an embodiment includes a sanitary cleaning device 100 and a Western-style sitting toilet (hereinafter, simply referred to as "toilet" for convenience of explanation) 200. The sanitary cleaning device 100 is provided on the toilet 200. The sanitary cleaning device 100 includes a local cleaning device 30 for cleaning the local part of a user sitting on the toilet seat 20.

[0023] The casing 10 has a case plate 11 and a case cover 12. The case plate 11 constitutes the bottom of the casing 10. The case plate 11 is placed on the rear part of the toilet 200. The case cover 12 is provided on the case plate 11 and covers the upper part of the case plate 11. The toilet seat 20 and the toilet lid 25 are rotatably supported by the case cover 12. Further, the case cover 12 has an openable and closable lid portion 12a in front of a nozzle unit 60 described later. The lid portion 12a is pushed and opened when the nozzle unit 60 advances into the toilet 200.

[0024] The casing 10 houses the local cleaning device 30 within a space enclosed by the case plate 11 and the case cover 12. The casing 10 also houses functional units such as an opening / closing unit that controls the opening and closing of the toilet seat 20 and the toilet lid 25, a toilet seat heating unit that controls the temperature of the toilet seat 20, and a communication unit that can communicate with the operating unit 140, etc.

[0025] In this specification, "up," "down," "front," "back," "right," and "left" refer to directions as viewed from the perspective of a user sitting on the toilet seat 20 with their back to the toilet lid 25, as shown in Figure 1.

[0026] Figure 2 is a block diagram showing the main components of a sanitary cleaning device. Figure 2 shows the main components of the waterway system and electrical system of the sanitary cleaning device 100.

[0027] As shown in Figure 2, the sanitary cleaning device 100 has a pipeline 110. The pipeline 110 extends from a water source 500, such as a water supply or a water storage tank, to a nozzle unit 60. The pipeline 110 guides the water supplied from the water source 500 to the nozzle unit 60.

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

[0029] A pressure regulating valve 121 is provided downstream of the solenoid valve 120. The pressure regulating valve 121 adjusts the pressure in the pipeline 110 to a predetermined pressure range when the water supply pressure is high. A check valve 122 is provided downstream of the pressure regulating valve 121. The check valve 122 suppresses the backflow of water upstream of the check valve 122 when the pressure in the pipeline 110 drops.

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

[0031] The heat exchanger unit 123 is an instantaneous heating type heat exchanger, for example, using a ceramic heater. Compared to a hot water storage heating type heat exchanger, an instantaneous heating type heat exchanger can raise the water temperature to a specified temperature in a shorter time. Note that the heat exchanger unit 123 is not limited to an instantaneous heating type heat exchanger, and may also be a hot water storage heating type heat exchanger. Furthermore, the heating section is not limited to a heat exchanger, and may use other heating methods, such as microwave heating.

[0032] The heat exchanger unit 123 is connected to the control unit 130. The control unit 130 controls the heat exchanger unit 123 in response to, for example, the user's operation of the control unit 140, thereby raising the temperature of the water to the temperature set on the control unit 140.

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

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

[0035] The vacuum breaker 125 promotes the draining of water downstream of the vacuum breaker 125 by drawing air into the pipeline 110. The vacuum breaker 125 promotes the draining of water from, for example, the nozzle unit 60. In this way, the vacuum breaker 125 prevents backflow of, for example, the cleaning water inside the nozzle unit 60 to the water supply source 500 (water supply) side by draining the water from the nozzle unit 60 and drawing air into the nozzle unit 60.

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

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

[0038] A pressure modulation unit 127 is provided downstream of the electrolytic cell unit 126. The pressure modulation unit 127 imparts pulsation or acceleration to the water flow in the pipeline 110, causing pulsation to the water discharged from the posterior wash outlet 83b, the soft wash outlet 83c, and the bidet wash outlet 83d of the nozzle body 80, as well as from the discharge outlet of the nozzle washing unit 44. In other words, the pressure modulation unit 127 changes the flow state of the water flowing in the pipeline 110. The pressure modulation unit 127 is connected to the control unit 130. The pressure modulation unit 127 changes the flow state of the water based on the control by the control unit 130. The pressure modulation unit 127 changes the pressure of the water in the pipeline 110.

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

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

[0041] Downstream of the flow path switching section 72, there are a rear-facing washing flow path 80a, a soft washing flow path 80b, a bidet washing flow path 80c, a first bowl ejection flow path 80d, a second bowl ejection flow path 80e, and a surface washing flow path 75. The rear-facing washing flow path 80a, the soft washing flow path 80b, the bidet washing flow path 80c, the first bowl ejection flow path 80d, and the second bowl ejection flow path 80e are located inside the nozzle body 80. The surface washing flow path 75 is a conduit (not shown) connecting the flow path switching section 72 and the nozzle washing section 44.

[0042] The posterior cleansing channel 80a flows water or functional water generated in the electrolytic cell unit 126 from the channel switching section 72 towards the posterior cleansing outlet 83b. The soft cleansing channel 80b flows water or functional water generated in the electrolytic cell unit 126 from the channel switching section 72 towards the soft cleansing outlet 83c. The bidet cleansing channel 80c flows water or functional water generated in the electrolytic cell unit 126 from the channel switching section 72 towards the bidet cleansing outlet 83d. The first bowl discharge channel 80d flows water or functional water generated in the electrolytic cell unit 126 from the channel switching section 72 towards the first outlet 83e. The second bowl discharge channel 80e flows water or functional water generated in the electrolytic cell unit 126 from the channel switching section 72 towards the second outlet 85a. Furthermore, the surface cleaning channel 75 flows water or functional water generated in the electrolytic cell unit 126 from the channel switching section 72 to the nozzle cleaning section 44.

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

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

[0045] Next, we will describe the local cleaning device 30 installed inside the casing 10. Figure 3 is a cross-sectional view of the local cleaning device inside the casing, seen from the side. Figure 4 is a side view showing the support unit with the cover removed from the main body. Figure 5 is a side view showing the gear and belt removed from the support section in Figure 4. Figure 6 is a perspective view of the local cleaning device from the rear at an oblique angle. Figure 7 is a side view showing the nozzle unit on its own. Figure 8 is a side view showing the nozzle unit in Figure 7 with the nozzle cover removed. Figure 9 is a perspective view showing the nozzle head removed from the second cylinder section. Figure 10 is a cross-sectional view showing the flow path inside the nozzle body.

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

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

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

[0049] The support portion 40 has a groove portion 45 extending in the direction of the nozzle unit 60's movement, and a rail portion 46 extending in the direction of the nozzle unit 60's movement at a different position from the groove portion 45. The groove portion 45 and the rail portion 46 are parts that guide the nozzle unit 60 when it moves back and forth between the casing 10 and the toilet bowl 200.

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

[0051] The rail section 46 is provided protruding from the bottom section 42 in the left-right direction. The rail section 46 is formed in a flat plate shape extending in the front-rear direction. The rail section 46 is curved upwards and convex in the front-rear direction, corresponding to the shape of the nozzle cover 90. The recess 73b of the nozzle unit 60, which will be described later, is held in the rail section 46. The nozzle unit 60 moves back and forth along an arc-shaped trajectory due to the curvature of the groove section 45 and the rail section 46 in the front-rear direction.

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

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

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

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

[0056] The case 73 of the flow control unit 70 is attached to the nozzle body 80. The nozzle cover 90 is attached to both the case 73 and the nozzle body 80. As a result, the nozzle unit 60, consisting of the flow control unit 70, the nozzle body 80, and the nozzle cover 90, slides together in the front-rear direction relative to the support portion 40.

[0057] The case 73 has a cylindrical projection 73a that is held by being sandwiched from above and below in the groove 45 of the support portion 40, and a recess 73b that is held by being sandwiched from above and below in the rail portion 46 of the support portion 40. The projection 73a is provided at a position corresponding to the groove 45 of the support portion 40. The recess 73b is provided at a position corresponding to the rail portion 46 of the support portion 40.

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

[0059] The nozzle body 80 is located in front of the flow control unit 70. Inside the nozzle body 80 are a rear wash channel 80a, a soft wash channel 80b, a bidet wash channel 80c, a first bowl spray channel 80d, and a second bowl spray channel 80e. Water and functional water flowing into the flow control unit 70 are directed to the rear wash channel 80a, the soft wash channel 80b, the bidet wash channel 80c, the first bowl spray channel 80d, the second bowl spray channel 80e, and the surface wash channel 75 by the operation of the flow channel switching unit 72.

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

[0061] The first cylindrical portion 81, the second cylindrical portion 82, and the nozzle head 83 are formed from, for example, a resin material, with their outer surfaces 81a, 82a, and 83a linearly oriented in the longitudinal direction. The first cylindrical portion 81 and the second cylindrical portion 82 may be fixed together or detachable. The first cylindrical portion 81 and the second cylindrical portion 82 are joined together, for example, by welding or a rubber gasket. The nozzle head 83 may be fixed to, for example, the second cylindrical portion 82, or detachable. The nozzle head 83 is joined to the second cylindrical portion 82, for example, by welding or a rubber gasket.

[0062] The posterior cleansing channel 80a, the soft cleansing channel 80b, the bidet cleansing channel 80c, the first bowl ejection channel 80d, and the second bowl ejection channel 80e extend longitudinally (front-to-back direction) inside the first cylindrical section 81, the second cylindrical section 82, and the nozzle head 83. That is, as shown in Figure 9, five channels are formed inside the first cylindrical section 81, the second cylindrical section 82, and the nozzle head 83.

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

[0064] The nozzle body 80 can wash the buttocks of a user sitting on the toilet seat 20 by spraying hot and cold water from the posterior wash nozzle 83b or the soft wash nozzle 83c of the nozzle head 83. The soft wash nozzle 83c sprays water with a softer flow than the posterior wash nozzle 83b. In addition, the nozzle body 80 can wash the female genitals of a woman sitting on the toilet seat 20 by spraying hot and cold water from the bidet wash nozzle 83d of the nozzle head 83.

[0065] The first nozzle 83e and the second nozzle 83f are arranged side by side, for example, on the front of the nozzle head 83. The first nozzle 83e and the second nozzle 83f spray water or functional water into the toilet bowl 200. The first nozzle 83e and the second nozzle 83f spray water and functional water in different directions in the front-to-back direction. The water or functional water sprayed into the toilet bowl 200 from the first nozzle 83e and the second nozzle 83f suppresses the adhesion of dirt inside the toilet bowl 200.

[0066] Next, the configurations of the posterior cleansing channel 80a, the soft cleansing channel 80b, the bidet cleansing channel 80c, the first bowl jet channel 80d, and the second bowl jet channel 80e will be described with reference to Figure 10.

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

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

[0069] Therefore, as shown in Figure 10, the first channel 85, the second channel 86, and the third channel 87 each extend in a straight line. This prevents the nozzle unit 60 from reducing the diameter (channel area) of the first and second channels 85 and 86 within the nozzle body 80. Consequently, the nozzle unit 60 is able to stably discharge water from the nozzle head 83.

[0070] Furthermore, the draft angles of the first channel 85, the second channel 86, and the third channel 87 are approximately 1 to 5 degrees. Due to these draft angles, the hole diameter at the boundary between the first channel 85 and the second channel 86 is smaller than the hole diameter on the case 73 side of the first channel 85 and the hole diameter on the nozzle head 83 side of the second channel 86.

[0071] The water or functional water (hereinafter referred to as "water") flowing through the first channel 85 to the third channel 87 can have its flow velocity made uniform even if the hole diameter at the boundary between the first channel 85 and the second channel 86 is narrowed, because the hole diameter on the nozzle head 83 side of the second channel 86 is larger. This reduces the pressure loss of the water flowing through the first channel 85 to the third channel 87, allowing for stable water discharge from the nozzle head 83.

[0072] The second channel 86 has a different water flow direction from the first channel 85 in the longitudinal direction of the nozzle unit 60. Similarly, the third channel 87 has a different water flow direction from the first channel 85 and the second channel 86 in the longitudinal direction of the nozzle unit 60. In other words, the boundary between the first channel 85 and the second channel 86, and the boundary between the second channel 86 and the third channel 87, are turning points where the direction of water flow changes. To put it another way, the direction of water flowing through the nozzle unit 60 changes stepwise from the first channel 85 to the third channel 87.

[0073] As shown in Figure 10, the angle α1 between the first channel 85 and the horizontal is smaller than the angle α2 between the second channel 86 and the horizontal (α1 < α2). In other words, the second channel 86 has a steeper slope than the first channel 85. Also, the angle α3 between the third channel 87 and the horizontal is larger than the angle α2 between the second channel 86 and the horizontal (α1 < α2 < α3). That is, the nozzle body 80 has a steeper slope as it moves from the first channel 85 to the third channel 87.

[0074] By gradually increasing the inclination angle from the first channel 85 to the third channel 87, pressure loss of water flowing through the first channel 85 to the third channel 87 can be suppressed. This allows for stable water discharge from the nozzle head 83.

[0075] The lengths L1 of the first cylindrical section 81, L2 of the second cylindrical section 82, and L3 of the nozzle head 83 may be the same. In this case, "same" includes the manufacturing tolerance range of the first cylindrical section 81, the second cylindrical section 82, and the nozzle head 83. The manufacturing tolerance range is, for example, within 0.1 mm to 2.0 mm. By doing so, the amount of change in the inclination of the first and second cylindrical sections 81 and 82 and the nozzle head 83 can be kept constant. Therefore, the effect of pressure loss due to the continuous operation of the first to third flow paths 85 to 87 can be suppressed, and more stable water discharge can be achieved from the nozzle head 83.

[0076] The nozzle cover 90 covers the outer surfaces 81a, 82a, and 83a of the nozzle body 80. As shown in Figure 7, the nozzle cover 90 is curved so as to be convex upward and moves back and forth along an arc-shaped trajectory. The nozzle cover 90 has holes 90a that communicate with the posterior wash outlet 83b, the soft wash outlet 83c, and the bidet wash outlet 83d, respectively, and notches 90b that expose the first nozzle 83e and the second nozzle 83f.

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

[0078] On the other hand, it is conceivable to curve the flow path within the nozzle unit to match the curved shape of the nozzle unit. In such a case, for example, if the curvature of the nozzle unit is large, the flow path may narrow due to manufacturing tolerances, and it may not be possible to secure the flow path area. Also, if the flow path is made larger, the nozzle unit may become larger.

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

[0080] Furthermore, the first channel 85 and the second channel 86 each extend in a straight line. This makes it easier to remove the mold pins from the first channel 85 and the second channel 86, allowing for efficient manufacturing of the nozzle unit 60. In addition, since the channel area of ​​the first channel 85 and the second channel 86 can be secured, stable water discharge can be achieved even when the nozzle unit 60 has a curved shape.

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

[0082] In other words, the first cylindrical section 81 and the second cylindrical section 82, whose outer surfaces 81a and 82a are straight in the longitudinal direction, are housed inside the curved nozzle cover 90. This allows for a certain wall thickness to be secured between the first and second flow paths 85 and 86 and the outer surfaces 81a and 82a of the first and second cylindrical sections 81 and 82, compared to, for example, the case where the first and second cylindrical sections 81 and 82 are curved. As a result, stable water discharge can be achieved while ensuring the durability of the nozzle body 80.

[0083] Furthermore, the second cylindrical portion 82 is connected to the front of the first cylindrical portion 81. This improves the durability of the nozzle body 80 compared to a multi-stage nozzle unit in which, for example, the second cylindrical portion protrudes from inside the first cylindrical portion.

[0084] Furthermore, the angle α1 between the first channel 85 and the horizontal is smaller than the angle α2 between the second channel 86 and the horizontal. This allows the first and second cylindrical sections 81 and 82, where the first and second channels 85 and 86 are formed, to be formed to conform to the nozzle cover 90, which is curved upwards and convex, while maintaining a constant wall thickness. As a result, physical interference between the nozzle cover 90 and the first and second cylindrical sections 81 and 82 is suppressed compared to the case where the first and second channels 85 and 86 are curved upwards, and the nozzle body 80 can be made more compact.

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

[0086] Furthermore, the lengths L1 of the first cylindrical section 81, L2 of the second cylindrical section 82, and L3 of the nozzle head 83 are the same. This makes it possible to keep the amount of change in the inclination angle of the first cylindrical section 81, the second cylindrical section 82, and the nozzle head 83 constant. Consequently, the effect of pressure loss due to the continuous flow of multiple channels can be suppressed, and more stable water discharge can be achieved.

[0087] In the embodiment described above, the nozzle body 80 was explained using the example of a case where the direction of water flow is in two stages, by having a first cylindrical portion 81 having a first flow path 85 and a second cylindrical portion 82 having a second flow path 86. However, the embodiments of the present invention are not limited to this, and for example, the nozzle body may have three or more cylindrical portions (flow paths) in which the direction of water flow is progressively different.

[0088] Furthermore, in the embodiments described above, the case in which the first flow path 85 and the second flow path 86 are straight flow paths was used as an example. However, the embodiments of the present invention are not limited to this, and for example, at least one of the first flow path 85 and the second flow path 86 may be a curved flow path, or both flow paths may be curved flow paths. That is, the flow paths in the nozzle body 80 may consist only of straight flow paths or only of curved flow paths, or both straight flow paths and curved flow paths may be provided.

[0089] The embodiment may include the following configurations. (Composition 1) Casing and, A nozzle unit that moves back and forth between the casing and the toilet bowl, Equipped with, The nozzle unit is curved so as to be convex upwards, and moves back and forth along an arc-shaped trajectory. The nozzle unit has a first channel through which water flows, and a second channel connected to the first channel. A sanitary cleaning device characterized in that the direction of water flow in the second channel is different from that of the first channel in the longitudinal direction of the nozzle unit. (Configuration 2) The sanitary cleaning apparatus according to configuration 1, characterized in that the first flow path and the second flow path each extend in a straight line. (Composition 3) The nozzle unit described above is The nozzle body and A nozzle cover that covers the nozzle body and is curved so as to be convex upwards, It has, The nozzle body is The first cylindrical portion having the first flow path, The second cylindrical portion having the second flow path, It has, The sanitary cleaning device according to configuration 1 or 2, characterized in that the outer surface of the first cylindrical portion and the outer surface of the second cylindrical portion each extend linearly in the longitudinal direction. (Composition 4) The sanitary cleaning device according to configuration 3, characterized in that the second cylindrical portion is connected to the front of the first cylindrical portion. (Composition 5) A sanitary cleaning device according to any one of configurations 1 to 4, characterized in that the angle between the first flow path and the horizontal is smaller than the angle between the second flow path and the horizontal. (Composition 6) The nozzle unit described above is The first cylindrical portion having the first flow path, The second cylindrical portion having the second flow path, A nozzle head connected to the front of the second cylindrical section and having a third flow path, It has, The sanitary cleaning device according to configuration 5, characterized in that the angle between the third flow path and the horizontal is greater than the angle between the second flow path and the horizontal. (Composition 7) The sanitary cleaning device according to configuration 6, characterized in that the length of the first cylindrical portion, the length of the second cylindrical portion, and the length of the nozzle head are the same.

[0090] Embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. Modifications made by those skilled in the art to the above-described embodiments are also included within the scope of the present invention, as long as they retain the features of the present invention. For example, the shape, dimensions, material, and arrangement of each element of a sanitary cleaning device are not limited to those exemplified and can be modified as appropriate. Furthermore, the elements of each of the above-described embodiments can be combined to the extent technically feasible, and combinations thereof are also included within the scope of the present invention, as long as they retain the features of the present invention. [Explanation of Symbols]

[0091] 10 Casing 11 Case Plate 12 Case Covers 12a Lid 20 toilet seats 25 Toilet lid 30 Local cleaning device 40 Support part 41 Main body 42 Bottom 43 Vertical section 44 Nozzle cleaning section 45 Groove 46 Rail section 48 Cover section 50 Nozzle Motors 50a Rotating shaft 52 Gears 53 Cable Rack 60 Nozzle Units 70-stroke unit 71 Flow rate adjustment section 72 Flow path switching section 73 cases 73a Protrusion 73b recess 73c Engagement part 75 Surface cleaning channel 80 Nozzle Body 80a Rear wash channel 80b Soft cleaning channel 80c bidet flushing channel 80d First bowl ejection channel 80e Second bowl ejection channel 81 First cylinder part 81a Exterior 82 Second cylinder part 82a Exterior 83 Nozzle head 83a Exterior 83b Washlet nozzle 83c Soft-cleaning spout 83d Bidet washing spout 83e 1st spout 83f 2nd spout 85 First channel 86 Second channel 87 Third channel 90 Nozzle Cover 90a hole 90b Notch 100 Sanitary cleaning equipment 110 Pipeline 120 Solenoid valve 121 Pressure Regulating Valve 122 Check valve 123 Heat exchanger unit 124 Flow Sensor 125 Vacuum breaker 126 Electrolytic Cell Unit 127 Pressure Modulation Unit 130 Control Unit 135 Power supply circuit 140 Operation section 150 Seat detection sensors 200 toilets 300 toilet equipment 500 Water source

Claims

1. Casing and, A nozzle unit that moves back and forth between the casing and the toilet bowl, Equipped with, The nozzle unit is curved so as to be convex upwards, and moves back and forth along an arc-shaped trajectory. The nozzle unit has a first channel through which water flows, and a second channel connected to the first channel. The second flow path has a different water flow direction from the first flow path in the longitudinal direction of the nozzle unit. A sanitary cleaning device characterized in that the first flow path and the second flow path each extend in a straight line throughout their entire length.

2. The nozzle unit described above is The nozzle body and A nozzle cover that covers the nozzle body and is curved so as to be convex upwards, It has, The nozzle body is The first cylindrical portion having the first flow path, The second cylindrical portion having the second flow path, It has, The sanitary cleaning device according to claim 1, characterized in that the outer surface of the first cylindrical portion and the outer surface of the second cylindrical portion each extend linearly in the longitudinal direction.

3. The sanitary cleaning device according to claim 2, characterized in that the second cylindrical portion is connected in front of the first cylindrical portion.

4. The sanitary cleaning apparatus according to claim 1, characterized in that the angle between the first flow path and the horizontal is smaller than the angle between the second flow path and the horizontal.

5. The nozzle unit described above is The first cylindrical portion having the first flow path, The second cylindrical portion having the second flow path, A nozzle head connected to the front of the second cylindrical section and having a third flow path, It has, The sanitary cleaning device according to claim 4, characterized in that the angle between the third flow path and the horizontal is greater than the angle between the second flow path and the horizontal.

6. The sanitary cleaning device according to claim 5, characterized in that the length of the first cylindrical portion, the length of the second cylindrical portion, and the length of the nozzle head are the same.

7. Casing and, A nozzle unit that moves back and forth between the casing and the toilet bowl, Equipped with, The nozzle unit is curved so as to be convex upwards, and moves back and forth along an arc-shaped trajectory. The nozzle unit has a first channel through which water flows, and a second channel connected to the first channel. The second flow path has a different water flow direction from the first flow path in the longitudinal direction of the nozzle unit. The nozzle unit described above is The nozzle body and A nozzle cover that covers the nozzle body and is curved so as to be convex upwards, It has, The nozzle body is The first cylindrical portion having the first flow path, The second cylindrical portion having the second flow path, It has, A sanitary cleaning device characterized in that the outer surface of the first cylindrical portion and the outer surface of the second cylindrical portion each extend linearly in the longitudinal direction.

8. Casing and, A nozzle unit that moves back and forth between the casing and the toilet bowl, Equipped with, The nozzle unit is curved so as to be convex upwards, and moves back and forth along an arc-shaped trajectory. The nozzle unit has a first channel through which water flows, and a second channel connected to the first channel. The second flow path has a different water flow direction from the first flow path in the longitudinal direction of the nozzle unit. The angle between the first flow path and the horizontal is smaller than the angle between the second flow path and the horizontal. The nozzle unit described above is The first cylindrical portion having the first flow path, The second cylindrical portion having the second flow path, A nozzle head connected to the front of the second cylindrical section and having a third flow path, It has, The angle between the third channel and the horizontal is greater than the angle between the second channel and the horizontal. A sanitary cleaning device characterized in that the length of the first cylindrical section, the length of the second cylindrical section, and the length of the nozzle head are the same.

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