JP2018131772A - Nebulizer fixing structure - Google Patents

Abstract

To provide a fixing structure capable of appropriately fixing a sprayer for ejecting liquid onto the surface of a toilet bowl portion of a toilet bowl while suppressing an increase in installation space.
An arm portion 217 of a sprayer 20 is extended from an outer peripheral surface of a first large-diameter portion 213 so as to be elastically deformable, and an outer peripheral surface of the first large-diameter portion 213 is provided at a free end portion 217b of the arm portion 217. A hook portion 217f protruding in a direction away from the base plate 110 is formed. The hook portion 217f is separated from the base plate 110 toward the base end portion 217a from the free end portion 217b side on the base end portion 217a side of the arm portion 217. The engaging portion 115 of the base plate 110 has an inclined surface 217s that is inclined, and a concave portion 115a into which the arm portion 217 is elastically fitted, and a support surface 115s that is inclined so as to contact the inclined surface 217s of the hook portion 217f. Have
[Selection] Figure 12

Description

  The invention of the present disclosure relates to a structure for fixing a sprayer that ejects liquid onto the surface of a toilet bowl portion of a toilet bowl.

  Conventionally, a toilet seat device is known that includes a base member attached to the upper surface of the pedestal portion of the toilet bowl body and a speaker attached directly to the base member (see, for example, Patent Document 1). A base member and a speaker of the toilet seat device are fastened to each other via a fastening member, thereby fixing the speaker to the base member and locking the base member and the speaker to each other without the fastening portion being fastened. A temporary fixing portion for holding the speaker at a predetermined fixed position on the base member is provided.

Japanese Patent No. 5591516

  By the way, in recent years, in order to prevent filth from adhering to the surface of the toilet bowl, a sanitary washing apparatus including a sprayer that jets water to the surface of the toilet bowl before the user uses the toilet bowl. Proposed. However, if such a sprayer is to be fixed to the base member of the sanitary washing device by a fastening member, in addition to the clearance with other members around the sprayer, a space for arranging the fastening member must be secured. It becomes difficult to suppress the increase in the size of the sanitary washing device associated with the installation of the device.

  Therefore, the main object of the present disclosure is to provide a fixing structure that can appropriately fix a sprayer that ejects liquid onto the surface of a toilet bowl portion of a toilet bowl while suppressing an increase in installation space.

  The sprayer fixing structure according to the present disclosure is a sprayer fixing structure for fixing a sprayer for ejecting liquid to the surface of a toilet bowl portion of a toilet bowl on a base member attached to the toilet bowl, and extends from an outer peripheral surface of the sprayer. A pair of arm portions that are elastically deformable so that the free end portions are close to the outer peripheral surface, and a pair of arm portions that are provided on the base member and can be engaged with the corresponding arm portions, respectively. A hook portion that protrudes in a direction away from the outer peripheral surface is formed at the free end portion of the arm portion, and the hook portion is located on the base end side of the arm portion. An inclined surface that is inclined so as to be separated from the base member as it goes from the free end side toward the base end side, and the engaging portion includes a recess into which the arm portion is elastically fitted; and Contact with the inclined surface of the hook Those having a supporting surface which is inclined so that.

  This fixing structure is for fixing a sprayer for ejecting liquid onto the surface of a toilet bowl part of a toilet bowl to a base member attached to the toilet bowl, and is provided on a pair of arm parts provided on the sprayer and the base member. And a pair of engaging portions. The pair of arm portions extend from the outer peripheral surface of the sprayer, and can be elastically deformed so that the free end portions are close to the outer peripheral surface. The free end portion of the arm portion is formed with a hook portion that protrudes in a direction away from the outer peripheral surface, and the hook portion moves from the free end portion side toward the proximal end portion side on the proximal end side of the arm portion. An inclined surface that is inclined so as to be separated from the base member. Each of the pair of engaging portions can be engaged with a corresponding arm portion, and has a concave portion into which the arm portion is elastically fitted, and a support surface inclined so as to contact the inclined surface of the hook portion. In such a fixing structure, each arm portion is elastically deformed so that the free end portion is close to the outer peripheral surface, and is inserted into the concave portion of the corresponding engaging portion, and each arm portion is elastically fitted into the concave portion, The sprayer can be fixed to the base member by snap fitting without using the fastening member. Further, the inclined surface formed on the hook portion of each arm portion is brought into contact with the support surface of the corresponding engaging portion, so that there is a slight gap between the concave portion and the arm portion in the direction perpendicular to the extending direction of the arm portion. Even if this play is present, rotation of the sprayer can be well controlled. As a result, it is possible to appropriately fix the sprayer to the base member while suppressing an increase in installation space.

  In addition, an inclined portion that is inclined toward the toilet bowl portion may be formed at one end of the base member, and the pair of arm portions may be configured such that the free end portion is located on a jet outlet side of the sprayer. May be formed symmetrically with respect to the center plane in the width direction of the sprayer, and the pair of engaging portions are inclined so that the support surface is located on the toilet bowl side and the recesses face each other. It may be formed in the part. Thereby, while being able to assemble | attach a sprayer easily with respect to the inclination part of a base member, it becomes possible to eject a liquid to the wider range of the surface of a toilet bowl part from the sprayer assembled | attached to the inclination part.

  Furthermore, an angle formed between the support surface of the engaging portion and the inclined portion may be equal to or less than an angle formed between a plane orthogonal to the flat surface of the base member and the inclined portion. As a result, the base member can be formed using the fixed mold and the movable mold without causing an undercut. If the angle formed between the support surface and the inclined portion is equal to or less than the angle formed between the plane orthogonal to the flat surface of the base member and the inclined portion, the angle formed between the support surface and the inclined portion (and the inclined surface of the arm portion). By changing the (tilt angle), the spray range of the liquid ejected from the sprayer can be changed.

  The sprayer and the base member may be made of resin. Accordingly, it is possible to easily form an elastically deformable arm portion in the sprayer and to easily form the base member using the fixed mold and the movable mold.

It is a perspective view which shows the toilet bowl to which the sanitary washing apparatus containing the fixing structure of this indication was attached. It is a fragmentary sectional view which shows the toilet bowl to which the sanitary washing apparatus containing the fixing structure of this indication was attached. It is a front view which shows the sanitary washing apparatus containing the fixing structure of this indication. It is a principal part enlarged view which shows the sanitary washing apparatus containing the fixing structure of this indication. It is a principal part enlarged view which shows the sanitary washing apparatus containing the fixing structure of this indication. It is a disassembled perspective view which shows the fixing structure of this indication. It is a disassembled perspective view which shows the fixing structure of this indication. It is a side view which shows the fixing structure of this indication. It is sectional drawing which shows the fixing structure of this indication. It is sectional drawing which shows the fixing structure of this indication. It is sectional drawing along the X1-XI line of FIG. It is a fragmentary sectional view which shows the state in which the sprayer was attached to the base member of the sanitary washing apparatus. It is a fragmentary sectional view which shows the state in which the sprayer was attached to the base member of the sanitary washing apparatus. It is a perspective view which shows the attachment procedure of the sprayer with respect to the base member of a sanitary washing apparatus.

  Next, embodiments for carrying out the invention of the present disclosure will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a toilet 1 to which a sanitary washing device 10 including a fixing structure of the present disclosure is attached. The toilet 1 shown in the figure is a Western-style seated toilet, and the sanitary washing device 10 is fixed to the upper surface of the toilet 1. The sanitary washing device 10 includes a casing 11, a toilet seat 12 that is rotatably supported by the casing 11, a toilet lid 13 that is rotatably supported by the casing 11 like the toilet seat 12, and an operation panel 14. including.

  The casing 11 of the sanitary washing device 10 includes a resin base plate (base member) 110 that is fixed to the upper surface of the toilet 1 and a resin cover 119 that is detachably attached to the base plate 110. As shown in FIG. 2, the base plate 110 has a flat portion 111 fixed to the upper surface of the toilet 1 and an inclination extending from one end of the flat portion 111 toward the toilet bowl 2 of the toilet 1. Part 112. When the casing 11 (base plate 110) is fixed to the toilet bowl 1, the inclined portion 112 enters the toilet bowl 2 as illustrated.

  In the casing 11 (base plate 110 and cover 119), as shown in FIG. 3, a butt washing nozzle 15 and a bidet nozzle 16 are arranged as human body washing nozzles for ejecting water (including hot water) to local parts of the human body. ing. As shown in FIGS. 4 and 5, the butt washing nozzle 15 includes a nozzle body 15n that can move forward and backward with respect to the casing 11, and a cylinder portion 15s that accommodates the nozzle body 15n so as to move forward and backward. The cylinder portion 15s is moved back and forth in the axial direction with respect to the casing 11 within a predetermined range by an actuator (not shown) including a motor and a rack and pinion mechanism. The nozzle body 15n is moved back and forth in the axial direction between the storage position and the cleaning position on the toilet bowl 2 side by the pressure of water supplied to the buttocks cleaning nozzle 15 or the biasing force of a spring (not shown).

  The bidet nozzle 16 includes a nozzle body 16n that can move forward and backward with respect to the casing 11, and a cylinder portion 16s that houses the nozzle body 16n so as to be movable forward and backward. The cylinder portion 16s is moved back and forth in the axial direction with respect to the casing 11 within a predetermined range by the actuator. The nozzle body 16n is moved back and forth in the axial direction between the storage position and the cleaning position on the toilet bowl 2 side by the pressure of water supplied to the bidet nozzle 16 or the biasing force of a spring (not shown).

  Further, inside the casing 11, a valve unit connected to a water pipe (water source) via a branch tap and a water supply hose, a water tank connected to the valve unit, a butt washing nozzle 15, a bidet nozzle 16 and water A rotary valve (water force adjustment switching valve) connected to the tank (not shown) is accommodated. The valve unit includes a strainer, a check valve, a constant flow valve, a water stop solenoid valve, a relief valve, and the like. The water tank has a heater and a temperature sensor for heating water from a water pipe (water source), and can store hot water heated by the heater. The rotary valve can selectively switch the water supply destination from the water tank between the buttocks washing nozzle 15 and the bidet nozzle 16 and adjust the amount of water supplied to the nozzles 15 and 16. The sanitary washing device 10 may be provided with a heat exchanger having a heater instead of a water tank so that so-called instantaneous hot water supply is possible.

  In addition, a control device (not shown) that controls the sanitary washing device 10 is accommodated in the casing 11. Based on signals from the operation panel 14, the seating sensor 19 (see FIG. 1), the temperature sensor of the water tank, and the like, the control device is a valve unit, a heater for the water tank, an actuator for the butt washing nozzle 15 and the bidet nozzle 16, and a rotary. Control valves and the like.

  As shown in FIGS. 2 and 3, the casing 11 of the sanitary washing device 10 is provided with a movable shutter (scattering suppression member) 17. As shown in FIG. 3, the shutter 17 is a substantially trapezoidal plate-like body having a width approximately equal to the width of the opening of the toilet seat 12, and the upper end of the shutter 17 in FIG. 3 is interposed via a hinge 17h. A cover 119 of the casing 11 is rotatably supported. The shutter 17 of the present embodiment is formed in a flat plate shape, but may have an arcuate cross-sectional shape. Further, a spring (not shown) is interposed between the shutter 17 and the cover 119 of the casing 11, and the shutter 17 is urged toward the closed position shown in FIG. 4 by the spring. In the closed position, the shutter 17 covers the distal end portion of the buttocks cleaning nozzle 15 and the distal end portion of the bidet nozzle 16. As a result, it is possible to suppress dirt on the buttocks washing nozzle 15 and the bidet nozzle 16 and the periphery thereof, or to conceal both and maintain the aesthetic appearance.

  Further, the shutter 17 is connected to a link mechanism 18 as a motion conversion mechanism that converts a linear motion along the axial direction of the cylinder portion 15 s or 16 s into a rotational motion of the shutter 17. The link mechanism 18 includes a slider 180 guided by a guide portion 11g formed on the casing 11 (base plate 110 or cover 119), and a first link that is pin-coupled to the shutter 17 at a position spaced from the hinge 17h toward the free end side. 181 and a second link 182 that is pin-coupled to the slider 180 and pin-coupled to the first link 181. Also, pressing portions 15p or 16p are provided on the outer peripheral surfaces of the cylinder portion 15s of the butt washing nozzle 15 and the cylinder portion 16s of the bidet nozzle 16 so as to be able to contact the slider 180 of the link mechanism 18.

  As shown in FIG. 4, the pressing portions 15 p and 16 p of the cylinder portions 15 s and 16 s are separated from the slider 180 of the link mechanism 18 when the shutter 17 is in the closed position, and do not come into contact with the slider 180. Absent. On the other hand, when one of the cylinder parts 15s and 16s of the buttocks washing nozzle 15 and the bidet nozzle 16 moves toward the toilet bowl 2, the link mechanism corresponding to the pressing part 15p or 16p as shown in FIG. 18 abuts against 18 sliders 180 to press the sliders 180. The slider 180 moves toward the shutter 17 when pressed by the pressing portion 15p or 16p, and moves so that the first and second links 181 and 182 press the shutter 17 as the slider 180 moves. . As a result, the shutter 17 rotates so as to spring up against the biasing force of the spring with the hinge 17h as a fulcrum.

  The cylinder portion 15s or 16s is stopped when the slider 180 of the link mechanism 18 comes into contact with one end (the left end in FIG. 5) of the guide portion 11g, and the shutter 17 is moved by the cylinder portion 15s or 16s partially stopped. It is maintained in the open position by being supported. Thereby, it becomes possible to move the nozzle body 15n of the buttocks washing nozzle 15 and the nozzle body 16n of the bidet nozzle 16 to the washing position on the toilet bowl 2 side. When the cylinder portion 15s or 16s moves toward the flat portion 111, the shutter 17 is not supported by the cylinder portion 15s or 16s, and is urged by a spring (not shown) and returned to the closed position.

  Furthermore, the sanitary washing device 10 includes a sprayer 20 that jets water to the surface of the toilet bowl 2 of the toilet bowl 1. The sprayer 20 smoothes the surface of the toilet bowl part 2 by spraying water to make it difficult for filth to adhere to the sprayer 20, and the toilet bowl is cleaned with a water film interposed between the soil and the toilet bowl part 2 surface. It is used to facilitate separation from the surface of the portion 2. As shown in FIG. 2 and the like, the sprayer 20 is fixed to the above-described inclined portion 112 formed on the base plate 110 of the casing 11.

  6 and 7 are exploded perspective views showing the sprayer 20, FIG. 8 is a side view showing the sprayer 20, and FIGS. 9 and 10 are sectional views showing the sprayer 20. As shown in these drawings, the sprayer 20 includes a main body 21 and a flow dividing member 22 arranged inside the main body 21. The main body 21 is configured by joining together a first cylindrical body 211 and a second cylindrical body 212 formed of resin.

  As shown in FIGS. 6 and 7, the first cylindrical body 211 has a bottomed cylindrical first large-diameter portion 213 with one end released, and the first cylindrical body from the end surface of the first large-diameter portion 213. 211 has a first small-diameter portion 215 having a smaller diameter than the first large-diameter portion 213 extending in the axial direction. A positioning protrusion 213 a for positioning the second cylindrical body 212 is formed in the first large diameter portion 213 so as to extend in the axial direction of the first large diameter portion 213. In addition, the first large-diameter portion 213 has a backlash-suppressing protrusion 213b that is in contact with the inclined portion 112 of the base plate 110 and prevents the sprayer 20 from rattling with respect to the inclined portion 112 on the outer peripheral surface of the first large-diameter portion 213. It is formed so as to extend in the axial direction of the portion 213.

  The first small diameter portion 215 is formed in a so-called bamboo shoot joint shape, and as shown in FIG. 9, extends in the axial direction of the first small diameter portion 215 and has a sprayer 20 formed at its free end. A supply path 215p communicating with the inside of the supply port 20i and the first large diameter portion 213 is provided. The first small diameter portion 215, that is, the supply port 20 i is connected to the rotary valve via a branch valve (not shown) installed on the downstream side of the rotary valve. Thereby, the water from a water tank (or heat exchanger which has a heater) is supplied to the sprayer 20 (supply port 20i) via a rotary valve. However, the 1st small diameter part 215 (supply port 20i) may be connected to water supply piping via an on-off valve.

  Furthermore, as shown in FIGS. 6 and 7, the first cylindrical body 211 includes a pair of arm portions 217 formed integrally with the first large diameter portion 213. Each arm portion 217 extends from the outer peripheral surface of the first large diameter portion 213 so as to extend in the axial direction of the first large diameter portion 213. The base end portion 217a of each arm portion 217 extends radially outward from the outer peripheral surface of the first large diameter portion 213, and the free end portion 217b of each arm portion 217 and the outer peripheral surface of the first large diameter portion 213 An interval is formed between the two. Thereby, each arm part 217 can be elastically deformed so that the free end part 217 b is close to the outer peripheral surface of the first large diameter part 213.

  In the present embodiment, the pair of arm portions 217 includes a center plane in the width direction of the sprayer 20, that is, the first large diameter portion 213 and the first small diameter portion so that the free end portion 217 b is located on the jet outlet 20 o side of the sprayer 20. It is formed symmetrically with respect to a plane including the axis of 215 (supply path 215p) and the center line in the width direction of the backlash suppressing projection 213b. In addition, a hook portion 217f protruding in a direction away from the outer peripheral surface of the first large diameter portion 213 is formed on the free end portion 217b of each arm portion 217. As shown in FIG. 8, the hook portion 217f moves from the looseness-suppressing protrusion 213b, that is, from the inclined portion 112 (base plate 110) toward the base end portion 217a from the free end portion 217b side on the base end portion 217a side of the arm portion 217. It has a flat inclined surface 217s that is inclined so as to be spaced apart. The tip of the hook portion 217f is tapered as shown in FIG.

  As shown in FIGS. 6 and 7, the second cylindrical body 212 includes a second large-diameter portion 214 in which the ejection port 20o is formed, and an end surface on the opposite side of the second large-diameter portion 214 from the ejection port 20o side. And a second small diameter portion 216 having a smaller diameter than the second large diameter portion 214 extending in the axial direction of the second cylindrical body 212. The second large diameter portion 214 is formed in a short cylindrical shape having substantially the same outer diameter as the first large diameter portion 213. As shown in FIG. 8, the length L1 from the end surface surrounding the spout 20o of the second large diameter portion 214 to the end surface on the second small diameter portion 216 side is the second cylindrical body of the first large diameter portion 213. It is determined to be shorter than the length L2 from the end surface on the 212 (open end) side to the end surface on the supply port 20i side. Furthermore, a welding rib 214L, which is an annular protrusion having a substantially triangular cross-sectional shape, is formed on the end surface of the second large diameter portion 214 on the second small diameter portion 216 side.

  The second small diameter portion 216 has an outer diameter slightly smaller than the inner diameter of the first large diameter portion 213 of the first cylindrical body 211, and is inserted into the first large diameter portion 213. As described above, by forming the second small diameter portion 216 to be slightly smaller in diameter than the first large diameter portion 213, it is possible to improve the assembling property of the second cylindrical body 212 with respect to the first cylindrical body 211. . However, the second small diameter portion 216 may be formed to have a slightly larger diameter than the first large diameter portion 213 and may be press-fitted into the first large diameter portion 213. Further, as shown in FIGS. 9 and 10, the second small diameter portion 216 is formed in a cylindrical shape having an axial length shorter than the axial length of the internal space of the first large diameter portion 213. Further, a positioning recess 216a (see FIGS. 9 and 11) into which the positioning protrusion 213a of the first large diameter portion 213 is fitted is formed on the outer peripheral surface of the second small diameter portion 216.

  As shown in FIGS. 9 and 10, in the second cylindrical body 212 (the second large diameter portion 214 and the second small diameter portion 216), the accommodating portion 218a in which the flow dividing member 22 is disposed, and the accommodating portion A communication path 218b that communicates between 218a and the ejection port 20o is formed. The accommodating portion 218a has a circular cross-sectional shape, is mainly defined by the second small diameter portion 216, and extends coaxially with the ejection port 20o. The communication path 218b is formed so that the inner diameter gradually decreases from the housing portion 218a toward the jet port 20o, and extends coaxially with the jet port 20o and the housing portion 218a. Moreover, the jet nozzle 20o is formed so that an internal diameter may increase gradually as it separates from the communicating path 218b.

  In the present embodiment, as shown in FIGS. 9 and 10, the accommodating portion 218 a, the communication passage 218 b, and the ejection port 20 o are configured such that the second small diameter portion 216 of the second tubular body 212 is the first of the first tubular body 211. When inserted into the large-diameter portion 213, the respective shaft centers are separated (shifted) on the center plane from the shaft center of the supply path 215p of the first cylindrical body 211 (first small-diameter portion 215). The second cylindrical body 212 is formed. Furthermore, as shown in FIGS. 7 and 10, the inner peripheral surfaces of the second large diameter portion 214 and the second small diameter portion 216 that define the accommodating portion 218 a have a plurality of recesses radially outward from the inner peripheral surface. The liquid passage 218p is formed. In the present embodiment, two liquid passages 218p having an arcuate cross-sectional shape are formed symmetrically with respect to the second cylindrical body 212 with respect to the center plane in the width direction of the sprayer 20, and each liquid passage 218p is Defined by a concave cylindrical surface and planes extending parallel to each other.

  The flow dividing member 22 is a resin-made cylindrical member having a through-hole (liquid passage) 22p having a circular cross-sectional shape extending along the central axis, and slightly smaller than the inner diameter of the accommodating portion 218a of the second cylindrical body 212. Have a small outer diameter. Further, as shown in FIG. 6, positioning protrusions 220 and a plurality of (at least three, for example, four in this embodiment) press-fitting ribs are formed on the outer peripheral surface of the flow dividing member 22. In the flow dividing member 22, the positioning protrusion 220 is fitted into the positioning recess 216b formed in the second small diameter portion 216 of the second cylindrical body 212, and a plurality of press-fitting ribs are press-fitted into the inner peripheral surface of the housing portion 218a. It arrange | positions in the 2nd cylindrical body 212 so that it may be. Thereby, the flow dividing member 22 has the main body 21 (first and second cylindrical bodies 211 and 212) in a state where the axis of the through hole 22p and the axis of the supply passage 215p are shifted (separated) on the center plane. ) Will be placed inside.

  Furthermore, the flow dividing member 22 has two projecting portions 221 that project in the axial direction from the end surface opposite to the jet outlet 20o and face each other in the radial direction. In the present embodiment, the outer peripheral surface of each protrusion 221 is a cylindrical surface having the same radius of curvature as the outer peripheral surface of the flow dividing member 22, and the inner surface and the end surface of each protrusion 221 are flat surfaces. When the flow dividing member 22 is disposed in the accommodating portion 218a of the main body 21 (second cylindrical body 212), the protruding portion 221 located on the upper side in the drawing of the two protruding portions 221 is as shown in FIG. The supply path 215p of the first cylindrical body 211 is opposed to the supply path 215p in the axial direction, and the inner surface of each projecting portion 221 is formed from the plane defining the two liquid paths 218p and the axial direction as shown in FIG. Extending in parallel.

  Further, the flow dividing member 22 has a short cylindrical swirl flow forming portion 222 communicating with the through hole 22p. As shown in FIG. 6, the swirling flow forming portion 222 is formed in a cylindrical shape having a smaller diameter than the outer peripheral surface of the flow dividing member 22, and protrudes in the axial direction from the end surface of the flow dividing member 22 on the jet outlet 20 o side. When the flow dividing member 22 is disposed in the housing portion 218a of the main body 21 (second tubular body 212), the second tubular shape is formed between the outer peripheral surface of the swirl flow forming portion 222 and the inner peripheral surface of the housing portion 218a. An annular space that communicates with each liquid passage 218p of the body 212 is defined, and the inside of the swirl flow forming portion 222 communicates with the ejection port 20o via the communication passage 218b.

  As shown in FIGS. 6, 9, and 11, the swirl flow forming portion 222 is formed with two liquid inlets 223 extending in the tangential direction of the inner peripheral surface of the swirl flow forming portion 222. . In the present embodiment, the two liquid inlets 223 are formed at point-symmetrical positions with respect to the center of the swirl flow forming portion 222 (the axial center of the jet outlet 20o and the like). Further, in the present embodiment, each liquid inlet 223 has a rectangular cross-sectional shape, and the plane defining each liquid inlet 223 has an inner periphery of the swirl flow forming portion 222 as can be seen from FIG. Includes a plane that touches the surface. When the flow dividing member 22 is disposed in the accommodating portion 218a of the main body 21 (second cylindrical body 212), each liquid inlet 223 has a corresponding liquid passage 218p of the second cylindrical body 212 as shown in FIG. It is located slightly on the side of the jet outlet 20o when viewed from the axial direction with respect to the plane defining. Thereby, each liquid inflow port 223, ie, the inside of the swirl flow forming portion 222, communicates with the corresponding (close) liquid passage 218p through the surrounding annular space.

  When assembling the sprayer 20 including the first and second cylindrical bodies 211 and 212 and the flow dividing member 22 described above, the flow dividing member 22 has the positioning protrusion 220 fitted into the positioning recess 216b of the second small diameter portion 216, and The plurality of press-fitting ribs are arranged in the accommodating portion 218a of the second cylindrical body 212 so as to be press-fitted into the inner peripheral surface of the accommodating portion 218a. As a result, the two liquid passages 218p are positioned on both sides of the space between the two protrusions 221, and the flow dividing member 22 is moved so that the liquid inlet 223 of the swirl flow forming portion 222 communicates with the corresponding liquid passage 218p. It can position to the 2 cylindrical body 212 (main body 21). Further, the second small diameter portion 216 assembled with the flow dividing member 22 has the welding rib 214L of the second large diameter portion 214 in contact with the end surface of the first large diameter portion 213 of the first cylindrical body 211 and the positioning concave portion 216a. The positioning protrusion 213a is inserted into the first large-diameter portion 213 so as to fit. An ultrasonic wave from an ultrasonic generator (not shown) is applied to the end surface surrounding the spout 20o of the second large-diameter portion 214 with the second cylindrical body 212 pressed against the first cylindrical body 211. Is applied.

  Thus, the second large diameter portion 214, that is, the second cylindrical body 212 is liquid-tightly joined to the first large diameter portion 213, that is, the first cylindrical body 211 by melting the tip of the annular welding rib 214 </ b> L. It will be. Therefore, in the sprayer 20, the first and second cylindrical bodies 211 and 212 can be joined in a liquid-tight manner without using a fastening member such as a bolt or a seal member, and the entire sprayer 20 can be downsized. In the sprayer 20, the length L <b> 1 between both end surfaces of the second large diameter portion 214 is set to be shorter than the length L <b> 2 between the end surfaces of the first large diameter portion 213. Thereby, by applying ultrasonic waves from the end surface of the second large diameter portion 214 on the jet nozzle 20o side, the welding rib 214L is favorably welded to the end surface of the first large diameter portion 213 of the first cylindrical body 211. Is possible.

  12 and 13 are partial cross-sectional views illustrating a state where the sprayer 20 is attached to the inclined portion 112 of the base plate 110. FIG. As shown in these drawings, the inclined portion 112 of the base plate 110 has a mounting portion 113 on which the sprayer 20 is mounted, an end wall portion 114 having an opening that exposes the ejection port 20 o of the sprayer 20, and the sprayer 20. A pair of engaging portions 115 that can be engaged with the arm portion 217 to be engaged are provided. The mounting portion 113 is formed to have an arcuate cross-sectional shape along the outer peripheral surfaces of the first and second large diameter portions 213 and 214 of the sprayer 20, and the surface thereof is the first cylindrical shape of the sprayer 20. It comes into contact with the play suppressing protrusion 213b formed on the body 211 (first large diameter portion 213).

  Each engaging portion 115 has a concave portion 115a through which the arm portion 217 of the sprayer 20 can be inserted, and a flat support surface 115s inclined so as to contact the inclined surface 217s of the hook portion 217f. In the present embodiment, each engagement portion 115 has a substantially right-angled triangular side shape, the support surface 115 s is located on the end wall portion 114 side, that is, the toilet bowl portion 2 side, and the recesses 115 a each define the mounting portion 113. And extending from the vicinity of the corresponding side edge portion of the mounting portion 113 to the flat portion 111 (upper side in the figure) side so as to face each other. In addition, an angle α formed between the support surface 115s of each engaging portion 115 and the extending direction of the inclined portion 112 is a plane P1 (see FIG. 12) orthogonal to the extending direction of the flat portion 111 of the base plate 110 and the inclined portion 112. And an inclination angle γ of the inclined surface 217s of the arm portion 217 (an angle formed between the inclined surface 217s and the axis of the first large-diameter portion 213, see FIG. 8). ing. Further, the interval between the inner side surfaces 115i of the concave portions 115a facing each other is set to be slightly shorter than the width between the portions of the pair of arm portions 217 closer to the base end portion 217a than the hook portions 217f.

  When the sprayer 20 is attached to the inclined portion 112 including the pair of engaging portions 115 as described above, a hose or the like (not shown) is connected to the first small diameter portion 215 (supply port 20i) of the sprayer 20, and then the backlash prevention protrusion is connected. As shown in FIG. 14, the sprayer 20 is pushed between the pair of engaging portions 115 from the flat portion 111 side toward the end wall portion 114 side while bringing the portion 213 b into contact with the surface of the mounting portion 113. When the sprayer 20 is pushed between the pair of engaging portions 115, each arm portion 217 is elastically deformed so that the free end portion 217b (hook portion 217f) side is close to the outer peripheral surface of the first large diameter portion 213 and the like. However, it passes through the recess 115a of the corresponding engaging portion 115. When the hook portion 217f of each arm portion 217 reaches the end wall portion 114 side with respect to the recess 115a, the portion on the base end portion 217a side with respect to the hook portion 217f of each arm portion 217 corresponds to the elasticity of the arm portion 217. Is pressed against the inner surface 115i of the recess 115a. Further, the inclined surface 217 s of each hook portion 217 f abuts on the support surface 115 s of the corresponding engaging portion 115.

  In this way, each arm portion 217 is elastically deformed so that the free end portion 217b (hook portion 217f) is close to the outer peripheral surface and inserted into the corresponding recess 115a of the engaging portion 115, and each arm portion 217 is inserted into the recess 115a. On the other hand, by fitting elastically, the sprayer 20 can be fixed to the inclined portion 112 of the base plate 110 by snap fitting without using a fastening member. Further, the inclined surface 217s formed on the hook portion 217f of each arm portion 217 is brought into contact with the support surface 115s of the corresponding engaging portion 115, so that the concave portion 115a and the extending direction of the arm portion 217 are orthogonal to each other. Even if there is some backlash between the arm portion 217 and the arm portion 217, the rotation of the sprayer 20 can be well controlled. As a result, the sprayer 20 can be appropriately fixed to the inclined portion 112 of the base plate 110 while suppressing an increase in installation space.

  Subsequently, an operation related to the sprayer 20 of the sanitary washing apparatus 10 including the sprayer 20 configured as described above will be described.

  The control device (not shown) of the sanitary washing device 10 allows the user to use the toilet 1 based on a signal from the seating sensor 19 and a signal from a seating switch (not shown) that is turned on in conjunction with the rotating hinge portion of the toilet seat 12. If it determines with having seated on (toilet seat 12), the above-mentioned actuator will be controlled so that either one of cylinder parts 15s and 16s may be moved to the toilet bowl part 2 side. When one of the cylinder portions 15 s and 16 s moves toward the toilet bowl 2, the pressing portion 15 p or 16 p presses the slider 180 of the link mechanism 18, and the slider 180 moves toward the shutter 17. Accordingly, the first and second links 181 and 182 move so as to press the shutter 17 with the movement of the slider 180, and the shutter 17 rotates so as to jump upward with the hinge 17h as a fulcrum. Further, the control device stops the cylinder portion 15s or 16s at the timing when the slider 180 of the link mechanism 18 comes into contact with one end of the guide portion 11g. Thereby, a part of the shutter 17 is supported by the cylinder portion 15s or 16s and is maintained in the open position.

  Next, the control device of the sanitary washing device 10 controls the rotary valve so that water is supplied to the supply port 20 i of the sprayer 20 from a water tank (or a heat exchanger having a heater). When water is supplied to the supply port 20 i of the sprayer 20, the supplied water proceeds in the supply path 215 p of the sprayer 20 and flows into the first large diameter portion 213. Part of the water that has flowed into the first large diameter portion 213 flows into the through hole 22p of the flow dividing member 22 and travels straight toward the jet outlet 20o. Further, part of the water that has flowed into the first large-diameter portion 213 flows into the two liquid passages 218p formed in the second cylindrical body 212, and swirls along the outer peripheral surface of the flow dividing member 22. It goes straight toward the annular space between the outer peripheral surface of the forming part 222 and the inner peripheral surface of the accommodating part 218a.

  Here, in the sprayer 20 of the present embodiment, instead of forming a liquid passage on the outer peripheral surface of the flow dividing member 22, two liquid passages 218p are formed on the inner peripheral surface of the second cylindrical body 212 constituting the main body 21. Has been. Accordingly, the cross-sectional areas of the through hole 22p and the two liquid passages 218p are set appropriately, and the water from the supply port 20i is appropriately converted into a plurality of water flow components by the flow dividing member 22 between the supply port 20i and the jet port 20o. As compared with the case where a plurality of liquid passages are formed on the outer peripheral surface of the flow dividing member 22, the flow dividing member 22 can be easily reduced in diameter.

  Further, in the sprayer 20, the flow dividing member 22 is disposed inside the main body 21 in a state where the axis of the through hole 22p and the axis of the supply path 215p are shifted, and the flow dividing member 22 is spaced from the supply path 215p. A protruding portion 221 that protrudes toward the supply path 215p is formed so as to face each other. Thereby, in the sprayer 20, the water flowing out from the supply path 215p is caused to collide with the protruding portion 221 facing the supply path 215p and appropriately distributed by the through hole 22p of the flow dividing member 22 and the two liquid paths 218p. The flow rate of water flowing into the two liquid passages 218p can be optimized.

  Further, the water flowing through each liquid passage 218p flows into the swirl flow forming portion 222 from the annular space via the liquid inlet 223. As described above, each liquid inlet 223 extends in the tangential direction of the inner peripheral surface of the swirl flow forming portion 222, and the flow dividing member 22 communicates with the liquid passage 218p corresponding to the liquid inlet 223. The second cylindrical body 212 (main body 21) is positioned. Accordingly, the sprayer 20 can efficiently form a swirling flow in the swirling flow forming portion 222 and push the swirling water with water from the through hole 22p to be ejected from the ejection port 20o. Therefore, in a state where the shutter 17 is maintained at the open position, it is possible to spread water over a wider range of the surface of the toilet bowl 2 by spirally ejecting water from the ejection port 20o of the sprayer 20 while swirling water. .

  As described above, in the sanitary washing device 10, water is spouted from the sprayer 20 to the surface of the toilet bowl 2 of the toilet bowl 1 with the shutter 17 serving as a movable scattering suppression member rotated from the closed position to the open position. Can be made. Thus, even when water is ejected from the sprayer 20 to the toilet bowl 2 while the user is seated on the toilet bowl 1, the ejected water (water droplets) is relatively scattered on the upper surface side of the toilet bowl 1. It becomes possible to suppress by the wide shutter 17 (refer FIG. 2), and it can suppress favorably that a water droplet disperses and adheres to a user's buttocks and a leg part. And by spraying water from the nebulizer 20 to the stool part 2, the surface of the stool part 2 is smoothed and filth is less likely to adhere, and a water film is formed between the sewage and the surface of the stool part 2. By interposing it, it becomes possible to make it easier for the filth to be detached from the surface of the toilet bowl 2 during toilet bowl cleaning.

  As a result, it is possible to prevent filth from adhering to the surface of the toilet bowl 2 of the toilet 1 while avoiding discomfort to the user. In addition, by making the shutter 17 movable, the shutter 17 can be returned to the closed position when water is not ejected from the sprayer 20. Accordingly, it is possible to prevent the shutter 17 from interfering with other functions and the like of the sanitary washing device 10 and to prevent the shutter 17 from interfering with the cleaning of the toilet 1 or the like. In addition, by forming a plurality of liquid passages 218p in the second cylindrical body 212 and reducing the size of the sprayer 20, it is possible to suppress the increase in size of the sanitary washing device 10 associated with the installation of the sprayer 20. Become.

  As described above, the structure for fixing the sprayer 20 according to the present disclosure is for fixing the sprayer 20 that ejects liquid onto the surface of the toilet bowl 2 of the toilet 1 to the base plate 110 attached to the toilet 1. 20 includes a pair of arm portions 217 provided on the base plate 110 and a pair of engaging portions 115 provided on the base plate 110. The pair of arm portions 217 extend from the outer peripheral surface of the first large-diameter portion 213 of the sprayer 20, and can be elastically deformed so that the free end portions 217b are close to the outer peripheral surface. A hook portion 217f protruding in a direction away from the outer peripheral surface of the first large diameter portion 213 is formed on the free end portion 217b of the arm portion 217, and the hook portion 217f is on the base end portion 217a side of the arm portion 217. Thus, there is an inclined surface 217 s that is inclined so as to be separated from the base plate 110 as it goes from the free end 217 b side to the base end portion 217 a side. The pair of engaging portions 115 can be engaged with the corresponding arm portions 217, and the support portions are inclined so as to contact the concave portions 115a into which the arm portions 217 are elastically fitted and the inclined surfaces 217s of the hook portions 217f. 115s.

  In such a fixing structure, each arm portion 217 is elastically deformed so that the free end portion 217b is close to the outer peripheral surface of the first large-diameter portion 213 and inserted into the corresponding recess 115a of the engaging portion 115, and each arm portion 217 is inserted. By elastically fitting into the recess 115a, the sprayer 20 can be fixed to the base plate 110 by snap fitting without using a fastening member. Further, the inclined surface 217 s formed on the hook portion 217 f of each arm portion 217 is brought into contact with the support surface 115 s of the corresponding engaging portion 115, so that the concave portion 115 a and the extending portion of the arm portion 217 are orthogonal to each other. Even if there is some backlash between the arm portion 217 and the arm portion 217, the rotation of the sprayer 20 can be well controlled. As a result, the sprayer 20 can be appropriately fixed to the base plate 110 while suppressing an increase in installation space. Furthermore, by making the sprayer 20 made of resin, an arm portion 217 that can be elastically deformed can be easily formed on the sprayer 20.

  In addition, an inclined portion 112 that is inclined toward the toilet bowl 2 is formed at one end of the base plate 110. The pair of engaging portions 115 has a support surface 115s located on the toilet bowl 2 side and a recess 115a. The inclined portions 112 are formed so that they face each other. The pair of arm portions 217 of the sprayer 20 are formed symmetrically with respect to the center plane in the width direction of the sprayer 20 so that the free end portion 217b is positioned on the jet outlet 20o side of the sprayer 20. Accordingly, the sprayer 20 can be easily assembled to the inclined portion 112 of the base plate 110, and water can be ejected from the sprayer 20 assembled to the inclined portion 112 to a wider range of the surface of the toilet bowl 2. .

  Furthermore, in the fixing structure, the angle α formed between the support surface 115s of the engaging portion 115 and the extending direction of the inclined portion 112 is such that the plane P1 perpendicular to the extending direction of the flat portion 111 of the base plate 110 and the inclined portion 112 are equal. It is determined to be the same as the angle β formed with the extending direction. Thereby, the base plate 110 can be easily formed of the resin using the fixed mold and the movable mold without causing an undercut. However, the angle α formed between the support surface 115s and the inclined portion 112 may be set smaller than the angle β formed between the plane P1 and the inclined portion 112 (and larger than 0 °). If the angle α formed between the support surface 115s and the inclined portion 112 is equal to or smaller than the angle β formed between the plane P1 and the inclined portion 112, the angle α formed between the support surface 115s and the inclined portion 112 (and the inclination of the arm portion 217). By changing the inclination angle γ) of the surface 217s, the spray range of the water ejected from the sprayer 20 can be changed. Further, an angle α formed between the support surface 115s of each engaging portion 115 and the inclined portion 112 and an inclination angle γ of the inclined surface 217s of the arm portion 217 (an angle formed between the inclined surface 217s and the axis of the first large diameter portion 213). , See FIG. 8).

  It goes without saying that the invention of the present disclosure is not limited to the embodiment described above, and various modifications can be made within the scope of the extension of the present disclosure. Furthermore, the above-described embodiment is merely a specific form of the invention described in the Summary of Invention column, and does not limit the elements of the invention described in the Summary of Invention column.

  The invention of the present disclosure can be used in the manufacturing industry of sprayers and sanitary washing devices.

  DESCRIPTION OF SYMBOLS 1 Toilet bowl, 2 Toilet bowl part, 10 Sanitary washing apparatus, 11 Casing, 11g Guide part, 12 Toilet seat, 13 Toilet lid, 14 Operation panel, 15 Wet washing nozzle, 15n Nozzle body, 15p Press part, 15s Cylinder part, 16 Bide nozzle , 16n Nozzle body, 16p pressing part, 16s cylinder part, 17 shutter, 17h hinge, 18 link mechanism, 19 seating sensor, 20 sprayer, 20i supply port, 20o outlet, 21 body, 22 flow dividing member, 22p through hole, 110 Base plate, 111 flat portion, 112 inclined portion, 113 mounting portion, 114 end wall portion, 115 engaging portion, 115a recess, 115i inner surface, 115s support surface, 119 cover, 180 slider, 181 first link, 182 second link , 211 1st cylindrical body, 212 1st 2 cylindrical body, 213 1st large diameter part, 213a positioning protrusion, 213b rattle suppression protrusion, 214 2nd large diameter part, 214L welding rib, 215 1st small diameter part, 215p supply path, 216 2nd small diameter part, 216a, 216b Positioning concave portion, 217 arm portion, 217a base end portion, 217b free end portion, 217f hook portion, 217s inclined surface, 218a accommodating portion, 218b communication passage, 218p liquid passage, 220 positioning protrusion, 221 protrusion, 222 Swirl flow forming part, 223 liquid inlet, P1 plane.

Claims (4)

A sprayer fixing structure for fixing a sprayer for jetting a liquid to the surface of a toilet bowl part of a toilet bowl to a base member attached to the toilet bowl,
A pair of arm portions that are extended from the outer peripheral surface of the sprayer, each elastically deformable so that the free end portion is close to the outer peripheral surface;
Provided on the base member, each including a pair of engaging portions engageable with the corresponding arm portions;
The free end portion of the arm portion is formed with a hook portion protruding in a direction away from the outer peripheral surface,
The hook part has an inclined surface that is inclined so as to be separated from the base member toward the base end part side from the free end part side on the base end part side of the arm part,
The said engaging part is the fixing structure of the sprayer which has a recessed part into which the said arm part fits elastically, and a support surface inclined so that it may contact | abut with the said inclined surface of the said hook part. In the fixing structure of the sprayer according to claim 1,
One end of the base member is formed with an inclined portion inclined toward the toilet bowl,
The pair of arm portions are formed symmetrically with respect to a central plane in the width direction of the sprayer so that the free end portion is located on the jet outlet side of the sprayer,
The pair of engaging portions is a sprayer fixing structure formed in the inclined portion such that the support surface is located on the toilet bowl side and the recesses face each other. In the fixing structure of the sprayer according to claim 2,
The sprayer fixing structure, wherein an angle formed between the support surface of the engaging portion and the inclined portion is equal to or less than an angle formed between a plane orthogonal to the flat surface of the base member and the inclined portion.   4. The sprayer fixing structure according to claim 3, wherein the sprayer and the base member are made of resin.

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