JP2015110874A - Water discharge structure, and water service device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water discharge structure and a water service device, capable of suppressing deterioration in switching performance of a water discharge state.SOLUTION: A water discharge structure 1 includes: a joint member 10; an operation part A1 provided on the downstream side of the joint member 10; a plurality of shower spouts 41a; an annular straight water discharge port OP1 surrounding all of the shower spouts 41a; a switching surface S1 provided in the operation part A1 in such a manner of facing the joint member 10 side; an introduction space R1 formed on the upstream side of the switching surface S1 and receiving water; a shower flow passage P1 opened to the switching surface S1 and introducing water from the introduction space R1 to the shower spouts 41a; a straight flow passage P2 opened to the switching surface S1 and introducing water from the introduction space R1 to the straight water discharge port OP1; a plug member A2 provided in the introduction space R1 in a state of being movable along a water discharge direction DR1 and opening and closing an opening OP2 of the straight flow passage P2 in accordance with turning of the operation part A1; and an elastic member 2 for pushing the plug member A2 from the joint member 10 side to the switching surface S1 side.

Description

  The present invention relates to a water discharge structure and a water supply device.

  There is known a water discharge structure that enables switching between shower water discharge and straight water discharge at the end of a faucet or the like. For example, Patent Document 1 discloses a water discharge structure including a joint main body, a water spray plate, a cylindrical member, and an operation ring. The joint body is provided at the end of the water conduit, and allows water to pass downstream. A watering board is provided in the downstream of a joint part in the state which cross | intersected the water discharge direction. The watering plate is formed with a plurality of shower water spouting holes. The cylindrical member is provided so as to surround the periphery of the water spray plate. A straight water outlet is formed by the gap between the peripheral edge of the water spray plate and the tubular member. The straight water discharge port has an annular shape surrounding all the shower water discharge holes. The operation ring has a cylindrical shape surrounding the cylindrical member and the joint body, and is provided so as to be rotatable with respect to the joint body. A mechanism for moving the tubular member and the water spray plate along the water discharge direction is provided between the operation ring and the tubular member in accordance with the rotation of the operation ring.

  When the cylindrical member and the water spray plate are moved upstream by the rotation of the operation ring, the peripheral edge of the water spray plate hits the joint body and flows from the joint body to the straight water outlet (hereinafter referred to as “straight flow”). Road ”) is blocked. For this reason, water is discharged only from the shower water discharge hole, and the water discharge becomes a shower. When the cylindrical member and the water spray plate are moved downstream by the rotation of the operation ring, the peripheral edge of the water spray plate is separated from the joint portion, and the straight flow path is opened. For this reason, water is discharged from the shower spout hole and the straight spout. The water discharged from the straight water outlet encloses the water discharged from the shower water outlet from the surroundings. As a result, the water discharge is integrated into a straight shape. In this way, the water discharge state can be switched by turning the operation ring.

Patent No. 4428343

  In the water discharge structure of Patent Document 1, the water spray plate is pressed against the joint body against the water flow when closing the straight flow path. That is, the force acting on the water spray plate by the water flow always acts in the direction of opening the straight flow path. For this reason, even if the straight flow path can be closed in the initial state, the straight flow path cannot be closed firmly due to deterioration of the components over time, and the switching performance of the water discharge state may be deteriorated.

  An object of this invention is to provide the water discharging structure and water supply apparatus which can suppress the fall of the switching performance of a water discharging state.

  The water discharge structure according to the present invention is a water discharge structure for adjusting the water discharge state from the end portion of the water conduit, and is rotated around a joint provided at the end of the water conduit and an axis along the water discharge direction. Surrounding all the shower water discharge holes, the operation part provided on the downstream side of the joint part, a plurality of shower water discharge holes formed so as to be scattered at the downstream end part of the operation part, so as to be movable An annular straight spout formed at the downstream end of the operating part, a switching surface provided in the operating part so as to face the joint side, and formed upstream of the switching surface in the operating part, An introduction space that accepts water from the joint side, a shower channel that opens to the switching surface and guides water from the introduction space to the shower spout, and a straight flow that opens to the switching surface and guides water from the introduction space to the straight spout Introduced in a movable state along the road and water discharge direction It provided in between, comprising a plug member for opening and closing the opening of the straight flow path in response to rotation of the operation unit, and an elastic member to press the plug member to the switching surface side from the joint portion side.

  According to this water discharge structure, the opening of the straight flow path is opened and closed according to the rotation of the operation unit. In the state where the opening of the straight channel is opened, the water introduced into the introduction space from the joint portion passes through the straight channel and flows out from the straight water outlet. In a state where the opening of the straight channel is closed, the water introduced from the joint portion into the introduction space passes through the shower channel and flows out from the shower water discharge hole. Thereby, the water discharge state is switched between a straight shape and a shower shape.

  In any water discharge state, a water flow from the joint portion side to the switching surface side is generated in the introduction space. This water flow causes a force from the joint portion side to the switching surface side to act on the plug member in the introduction space. That is, the direction of action of the force by the water flow coincides with the direction of action of the force by the elastic member. Since both the force by the elastic member and the force by the water flow act toward the switching surface side, the plug member is firmly pressed against the switching surface side. For this reason, even when the plug member or the elastic member is deteriorated, the straight flow path is tightly closed. Furthermore, since the force of the water flow does not resist the force of the elastic member, the initial value of the force of the elastic member can be set small. Thereby, since the burden on the plug member in a state where no water flow is generated is reduced, deterioration of the plug member is reduced. From these things, the fall of switching performance can be controlled.

  The water discharge structure according to claim 1, further comprising a cam mechanism that moves the plug member in a direction orthogonal to the switching surface in accordance with the rotation of the operation unit. In this case, the straight channel can be opened and closed by the cam mechanism. Since the plug member is moved in a direction perpendicular to the switching surface, friction between the switching surface and the plug member is greatly reduced. Thereby, since the fall of the sealing performance of a plug member is suppressed, the fall of switching performance can further be controlled.

  The opening of the straight channel on the switching surface may be formed at a position deviated from the rotation center of the operation unit, and may be moved and opened according to the rotation of the operation unit. In this case, since the straight flow path can be opened and closed without providing a mechanism for moving the plug member in accordance with the rotation of the operation unit, the structure can be simplified.

  The straight channel openings on the switching surface may be formed at a plurality of locations surrounding the rotation center of the operation unit, and the plug member may be configured to open and close all the straight channel openings on the switching surface simultaneously. In this case, in the circumferential direction surrounding the rotation center of the operation unit, variation in the amount of inflow water into the straight flow path can be suppressed, and variation in flow velocity in the straight flow path can be reduced. Thereby, since the dispersion | variation in the amount of water discharge in the circumferential direction of a straight water outlet is reduced, the inclination of the water discharge direction resulting from the said dispersion | variation can be suppressed.

  A water sprinkling member and a surrounding member are provided at the downstream end of the operation portion. The water sprinkling member has a flat plate portion that intersects the discharge direction and is detachably attached from the downstream side. It may have a cylindrical shape that surrounds the periphery and is detachably attached from the downstream side, all shower water discharge holes may be formed in the flat plate portion, and the straight water discharge ports may be formed by gaps between the flat plate portion and the surrounding member.

  In this case, the constituent members of the shower water discharge hole and the straight water discharge port can be easily attached and detached without being obstructed by other members. In addition, since opening and closing of the straight flow path is performed by a plug member provided in the introduction space, it is not necessary to provide a structure for switching the water discharge state on the watering member and the surrounding member. For this reason, simplification of the structural members of the shower water discharge hole and the straight water discharge port is possible. This also contributes to making the watering member and the surrounding member detachable from the downstream side.

  The water supply apparatus according to the present invention includes the water discharge structure. According to this water supply apparatus, it is possible to suppress a decrease in the switching performance of the water discharge state.

  ADVANTAGE OF THE INVENTION According to this invention, the fall of the switching performance of a water discharge state can be suppressed.

It is a perspective view of the faucet device concerning a 1st embodiment. It is sectional drawing which follows the II-II line | wire in FIG. It is a disassembled perspective view of a division member, a water sprinkling member, and a surrounding member. It is a disassembled perspective view of a division member, a water sprinkling member, and a surrounding member. It is a disassembled perspective view of a coupling member and an operation part main body. It is sectional drawing of a shower water discharge hole. It is a top view of a watering member. It is sectional drawing which follows the VIII-VIII line in FIG. It is sectional drawing which expands and shows only the operation part main body in FIG. It is sectional drawing which shows the state by which the opening of the straight flow path in FIG. 2 was obstruct | occluded. It is sectional drawing which shows the state by which opening of the straight flow path in FIG. 2 was open | released. It is sectional drawing of the water discharging structure which concerns on 2nd Embodiment. It is sectional drawing which follows the XIII-XIII line | wire in FIG. It is sectional drawing which shows the state by which the opening of the straight flow path in FIG. 12 was open | released. It is sectional drawing of the water discharging structure which concerns on 3rd Embodiment. It is sectional drawing which follows the XVI-XVI line | wire in FIG. It is sectional drawing which follows the XVII-XVII line in FIG. FIG. 16 is a cross-sectional view showing a state in which the opening of the straight channel in FIG. 15 is opened.

  Hereinafter, embodiments will be described in detail with reference to the drawings. The same reference numerals are given to the same elements or elements having the same function, and redundant description is omitted.

[First Embodiment]
As shown in FIG. 1, the faucet device 100 includes a water conduit 110, a faucet mechanism 120, a water purification unit 130, and a water discharge structure 1. The water conduit 110 is provided on, for example, a sink, and is connected to a water pipe below the sink. The water guide pipe 110 projects upward from the sink, draws a gentle curve and is folded downward, and discharges tap water downward from its end.

  The faucet mechanism 120 is provided at the base of the water conduit 110. The faucet mechanism 120 has a lever 121 and opens and closes the inlet portion of the water conduit 110 according to the rotation of the lever 121.

  The water purification unit 130 is provided on the distal end side of the water conduit 110, and includes a cartridge housing cylinder 131, a cover 132, and a switching button 134 (see FIG. 2). The cartridge housing cylinder 131 is a cylindrical member that forms a part of the water conduit 110 and houses the water purification cartridge 133. The cover 132 is a cylindrical decorative member that covers the outer surface of the cartridge housing cylinder 131 and smoothes the appearance. The switching button 134 is provided on the upper part of the cartridge housing cylinder 131 and is exposed outside the cover 132. A mechanism (not shown) for switching between raw water and purified water according to the operation of the switching button 134 is built in the cartridge housing cylinder 131.

  As shown in FIG. 2, the water discharge structure 1 includes a joint member 10, an operation part A <b> 1, a plug member A <b> 2, and a coil spring (elastic member) 2. The water discharge structure 1 adjusts the water discharge state from the end of the water conduit 110.

  The joint member 10 is detachably attached to the distal end portion of the cartridge housing cylinder 131 and holds the water purification cartridge 133 in the cartridge housing cylinder 131. The joint member 10 attached to the tip of the cartridge housing cylinder 131 constitutes a joint provided at the end of the water conduit 110.

  The joint member 10 includes fitting portions 13 and 14, a packing mounting portion 15, and a guide tube portion 16. The joint member 10 can be made of, for example, a metal material or a resin material. In terms of manufacturing cost reduction, it is preferable to use a resin material. Examples of the resin material include ABS resin.

  The fitting portion 13 is fitted with the lower end portion of the cartridge housing cylinder 131. The fitting portion 14 is connected to the lower side of the fitting portion 13 and is fitted to an upper end portion of the operation portion main body 20 described later. The outer diameter of the fitting portion 14 is smaller than the outer diameter of the fitting portion 13.

  The packing mounting portion 15 continues to the lower side of the fitting portion 14. The outer diameter of the packing mounting portion 15 is smaller than the outer diameter of the fitting portion 14. An annular packing 4 is mounted on the outer peripheral surface of the packing mounting portion 15. The packing 4 has an inverted V-shaped cross-sectional shape and seals between the inner surface of the operation unit main body 20 and the outer surface of the packing mounting unit 15. The packing 4 can be made of a rubber material such as nitrile rubber (NBR) or ethylene propylene rubber (EPDM).

  The guide cylinder part 16 is a cylindrical part connected to the lower side of the packing mounting part 15. Three guide slits 16 a are formed at the tip of the guide tube portion 16. The three guide slits 16a are arranged in the circumferential direction of the guide tube portion 16, and are respectively open along the vertical direction and downward. As will be described later, the guide tube portion 16 restricts the rotation of the plug body 70.

  In the central part of the joint member 10, there are formed a water introduction hole 10 a and a spring accommodation hole 10 b that extend from the upper side to the lower side and penetrate the joint member 10. The water guide hole 10a and the spring accommodation hole 10b allow water that has passed through the cartridge accommodation cylinder 131 to pass downstream. The inner diameter of the spring accommodating hole 10b is larger than the inner diameter of the water guiding hole 10a, and a coil spring 2 described later is accommodated in the spring accommodating hole 10b. The upper end portion of the coil spring 2 abuts against the bottom surface of the accommodation hole 10b.

  The operation unit A1 includes an operation unit main body 20, a partition member 30, a water sprinkling member 40, a surrounding member 50, and an operation unit cover 60. The operation part A1 is provided on the downstream side of the joint member 10 so as to be rotatable about an axis along the water discharge direction DR1. The rotation center of the operation portion A1 coincides with the central axis CL1 of the joint member 10.

  The operation unit main body 20 includes a mounting part 21, a lead-out part 22, an enclosing wall part 23, three cams 24, and a raised part 25. The operation unit main body 20 can be made of a metal material or a resin material. In terms of manufacturing cost reduction, it is preferable to use a resin material. In order to facilitate sliding with the plug member A2 or the like, it is more preferable to use a resin material having excellent slidability. Examples of the resin material having excellent slidability include polyacetal.

  The attachment portion 21 has a cup shape opened upward. The attachment portion 21 covers the fitting portion 14 of the joint member 10 from below. The attachment portion 21 is detachably attached to the joint member 10 by two fasteners 3 (see FIG. 5). The fastener 3 has a horseshoe shape in plan view. Four openings 21 c arranged in the circumferential direction are formed in the peripheral wall portion of the attachment portion 21. Both ends 3a of the fastener 3 are inserted into the two openings 21c from the outer peripheral side of the attachment portion 21, respectively. Similarly, the both ends 3a of the fastener 3 are respectively inserted into the remaining two openings 21c. The operation portion main body 20 is attached to the fitting portion 14 by the end portion 3a passing through the opening 21c entering the guide groove 14a. Since the end portion 3a is movable along the guide groove 14a, the operation portion main body 20 is rotatable about the central axis CL1.

  The bottom surface in the attachment portion 21 faces the joint member 10 side. That is, the bottom surface of the attachment portion 21 corresponds to the switching surface S1. An introduction space R <b> 1 for receiving water from the joint member 10 is formed on the lower side in the attachment portion 21. That is, the introduction space R1 is formed on the upstream side of the switching surface S1 in the operation unit A1.

  Two grooves 21 b arranged in the circumferential direction are formed on the outer peripheral surface of the attachment portion 21. The two grooves 21b are respectively open along the vertical direction and downward. As will be described later, the convex portion 60b of the operation portion cover 60 is fitted into the groove 21b. The number of grooves 21b is not limited to two, and may be one or three or more.

  The lead-out part 22 protrudes downward from the center of the bottom part of the attachment part 21. The derivation | leading-out part 22 exhibits a cylinder shape and comprises the water conveyance hole 22a inside. The center of the water guide hole 22a coincides with the central axis CL1, and the upper end of the water guide hole 22a opens at the center of the switching surface S1. An expanded surface 22d is formed at the upper end of the inner surface of the water guide hole 22a so as to increase the opening of the water guide hole 22a as it goes upward. A plurality of slits 22 b are formed at the lower end portion of the lead-out portion 22 to communicate the inside and the outside of the lead-out portion 22. These slits 22b are arranged in the circumferential direction of the lead-out portion 22 and open downward. The water guide hole 22a and the slit 22b constitute a straight flow path P2 described later. The opening OP2 of the water guide hole 22a in the switching surface S1 corresponds to the opening of the straight flow path P2.

  A plurality of ribs 22c are provided radially around the lead-out portion 22 (see FIG. 3). Each of these ribs 22 c extends along the vertical direction, and the upper end portion thereof is connected to the bottom portion of the attachment portion 21.

  The surrounding wall portion 23 has a cylindrical shape surrounding the lead-out portion 22 and protrudes downward from the bottom portion of the attachment portion 21. The protruding length of the surrounding wall portion 23 is shorter than the protruding length of the lead-out portion 22. On the outer periphery of the surrounding wall portion 23, a male screw portion 23a for attaching a surrounding member 50 described later is formed.

  Three water guide holes 21 a surrounding the central axis CL <b> 1 are formed at the bottom of the attachment portion 21. The water guide hole 21a is located between the lead-out part 22 and the surrounding wall part 23, and communicates the space below the attachment part 21 and the introduction space R1.

  The cam 24 is a raised portion formed on the switching surface S1, and constitutes a cam mechanism A3 described later. The cam 24 will be described in detail in the description of the cam mechanism A3.

  The raised portion 25 is provided in a part between the lead-out portion 22 and the surrounding wall portion 23. The raised portion 25 is raised downward from the bottom of the attachment portion 21. As will be described later, the raised portion 25 regulates the rotation of the partition member 30 with respect to the operation portion main body 20.

  The partition member 30 includes a partition plate 31, three water guide portions 32, and a connection band 33, and partitions a shower channel P1 and a straight channel P2 described later. The partition member 30 can be composed of a metal material or a resin material. In terms of manufacturing cost reduction, it is preferable to use a resin material. Examples of the resin material include ABS resin.

  The partition plate 31 has a disk shape that extends so as to be orthogonal to the central axis CL <b> 1, and is disposed under the lead-out portion 22. A recess R <b> 2 is formed on the lower surface of the partition plate 31. The peripheral edge of the recess R2 is located in the vicinity of the peripheral edge of the partition plate 31 over the entire collection. Three claw portions 31 a arranged in the circumferential direction are provided on the outer peripheral surface of the partition plate 31. The claw portion 31 a is used for attaching the watering member 40.

  The three water guide portions 32 are positioned so as to surround the central axis CL <b> 1 near the periphery of the partition plate 31, and respectively protrude upward from the upper surface of the partition plate 31. The water guide portion 32 has a cylindrical shape and constitutes a water guide hole 32a along the vertical direction. The lower end of the water guide hole 32 a is open to the bottom surface of the recess R <b> 2 of the partition plate 31.

  The upper ends of the three water guide portions 32 are connected by an arc-shaped connecting band 33 (see FIG. 4). The upper end portion of the water guide portion 32 and the connection band 33 enter between the lead-out portion 22 and the surrounding wall portion 23 of the operation portion main body 20. Thereby, the relative position of the operation part main body 20 and the partition member 30 in the radial direction is determined. The raised portion 25 enters the open end of the connecting band 33. Thereby, the rotation of the partition member 30 with respect to the operation unit main body 20 is restricted.

  In this state, the positions of the three water guide holes 32a coincide with the positions of the three water guide holes 21a. The introduction space R1 and the recess R2 communicate with each other by the water guide hole 21a and the water guide hole 32a.

  The water sprinkling member 40 has a cup shape opened upward, and covers the partition plate 31 from below. The water sprinkling member 40 can be comprised with a metal material or a resin material. In terms of manufacturing cost reduction, it is preferable to use a resin material. Examples of the resin material include ABS resin.

  The water sprinkling member 40 has a flat plate portion 41 and a peripheral wall portion 42. Since the flat plate portion 41 has a disk shape spreading so as to be orthogonal to the central axis CL1, it intersects the water discharge direction. The flat plate portion 41 covers the lower surface of the partition plate 31 and constitutes the lower end portion of the operation portion A1. The peripheral wall portion 42 surrounds the partition plate 31. Shower-like water is discharged from a set of these shower water discharge holes 41a.

  The number of shower water discharge holes 41a is preferably 30 to 150. If the number is less than 30, a good water discharge form may not be obtained. If it exceeds 150, the apparatus may be enlarged due to this. It is preferable to arrange as many holes as possible within the above range. As an example, in the present embodiment, the number of shower water discharge holes 41a is 100 (see FIG. 7).

  The shape of the shower water discharge hole 41a may be a circle, an ellipse, a triangle, a rectangle, other polygons, or a combination thereof. From the viewpoint of preventing clogging, a circle, an ellipse, or a combination thereof is preferable. From the viewpoint of moldability, a circular shape is preferable. The ratio of the number of circular holes to the total number of holes is preferably 0.5 or more, more preferably 0.6 or more, and particularly preferably 0.9 or more. As an example, in this embodiment, all the shower water discharge holes 41a are circular.

  The shower water discharge hole 41a may be a tapered hole whose opening area gradually decreases from the upstream opening toward the downstream opening, or a straight body having a constant opening area from the upstream opening to the downstream opening. It may be a hole or a combination thereof. From the viewpoint of realizing a good water discharge form, it is preferable that the shower water discharge hole 41a is the tapered hole. The ratio of the number of tapered holes to the total number of holes is preferably 0.5 or more, more preferably 0.7 or more, and particularly preferably 0.8 or more. As an example, in this embodiment, all the shower water discharge holes 41a are the tapered holes.

  In addition, when the shower water discharge hole 41a is the taper hole, an angle α (see FIG. 6) formed by mutually facing portions on the inner surface is preferably 1 to 20 °. If it is less than 1 °, there is a possibility that sufficient releasability in mold forming cannot be obtained. If it exceeds 20 °, the opening on the upstream side becomes too large, and a sufficient number of holes may not be obtained. From the viewpoint of improving the straightness of discharged water by the contraction effect, the angle α is more preferably 10 ° or more. As an example, in this embodiment, the angle α is 14 degrees.

  As an example of the arrangement of the shower water discharge holes 41a, it is possible to arrange the number of shower water discharge holes 41a corresponding to the circumference for each concentric multiple circumference. There exists a tendency for a favorable water discharge form to be obtained by setting it as such arrangement | positioning. The number of the circumferences is preferably 3 to 6 layers. If it is less than triple, a good water discharge form may not be obtained. If the number exceeds six, the apparatus may be enlarged due to this. As an example, in this embodiment, the number of circumferences is five (see FIG. 7).

  The flat plate portion 41 is formed with a plurality of scattered shower water discharge holes 41a. These shower water discharge holes 41a penetrate the flat plate portion 41, respectively. That is, a plurality of scattered shower water discharge holes 41a are formed at the downstream end of the operation portion A1.

  A regulation band 42 a that protrudes inward over the entire circumference is provided on the lower portion of the inner surface of the peripheral wall portion 42. The regulation band 42 a comes into contact with the claw portion 31 a of the partition plate 31 from below. Thereby, a gap is maintained between the partition plate 31 and the flat plate portion 41.

  On the inner surface of the peripheral wall portion 42, three flange portions 42b arranged in the circumferential direction are provided on the regulation band 42a. The three flange portions 42b protrude along the flange-shaped line that protrudes upward from the regulation band 42a and bends to one side, and rises inside the peripheral wall portion 42. The collar part 42b is hooked on the upper part of the claw part 31a. Thereby, the water sprinkling member 40 is attached to the partition plate 31.

  The space | interval of the collar parts 42b and the length of the nail | claw part 31a are set as follows. That is, by turning the watering member 40 with respect to the partition plate 31, the collar portion 42b can be removed from the upper portion of the claw portion 31a. If the collar part 42b is removed from the upper part of the nail | claw part 31a, it will become possible to remove the water sprinkling member 40 from the partition plate 31 below. Thus, the water spray member 40 is detachably attached to the partition member 30 from the downstream side.

  An annular seal member 7 is disposed in the water spray member 40 along the peripheral edge of the flat plate portion 41. The seal member 7 can be made of a rubber material such as nitrile rubber (NBR) or ethylene propylene rubber (EPDM). A general-purpose O-ring may be used as the seal member 7. The seal member 7 seals between the peripheral edge of the partition plate 31 and the peripheral edge of the flat plate portion 41.

  The surrounding member 50 has a cylindrical shape surrounding the periphery of the flat plate portion 41. The surrounding member 50 can be made of a metal material or a resin material. In terms of manufacturing cost reduction, it is preferable to use a resin material. Examples of the resin material include ABS resin.

  On the upper part of the inner surface of the surrounding member 50, a female screw portion 50 a that matches the male screw portion 23 a of the surrounding wall portion 23 is formed. By assembling the female screw portion 50a to the male screw portion 23a, the surrounding member 50 is detachably attached to the operation portion main body 20 from below.

  An annular seal member 6 is attached to the outer periphery of the lower end portion of the surrounding wall portion 23. The seal member 6 can be made of a rubber material such as nitrile rubber (NBR) or ethylene propylene rubber (EPDM). A general-purpose O-ring may be used as the seal member 6. The seal member 6 seals between the inner surface of the surrounding member 50 and the outer surface of the surrounding wall portion 23.

  A gap is formed between the inner surface of the surrounding member 50 and the outer surface of the peripheral wall portion 42. This gap together with the water guide hole 22a and the slit 22b constitutes a straight flow path P2 described later. An inward flange 50b is provided at the lower end of the surrounding member 50 over the entire circumference. The upper surface of the inward flange 50b is orthogonal to the central axis CL1. A gap is formed between the inward flange 50 b and the lower surface of the flat plate portion 41. An annular straight spout OP1 is formed by this gap. The straight water discharge port OP1 is formed at the downstream end of the operation unit A1 so as to surround all the shower water discharge holes 41a.

  The straight water discharge port OP1 may be partitioned into a plurality of regions by ribs or the like, for example. However, from the viewpoint of realizing a good water discharge form, it is preferable that the straight water discharge port OP1 has an annular shape that is connected over the entire circumference.

  The operation unit cover 60 is a cylindrical decorative member that smoothes the appearance of the operation unit A <b> 1 and covers the peripheral surfaces of the joint member 10, the operation unit main body 20, and the surrounding member 50. The operation unit cover 60 can be made of, for example, a metal material or a resin material. In terms of manufacturing cost reduction, it is preferable to use a resin material. Examples of the resin material include ABS resin. The surface of the operation unit cover 60 made of a resin material may be subjected to metal plating.

  An inward flange 60 a is provided on the inner surface of the operation unit cover 60 over the entire circumference. On the inner surface of the operation portion cover 60, two convex portions 60b for positioning are provided at a portion above the inward flange 60a. The two convex portions 60b are arranged in the circumferential direction (see FIG. 8) and extend in the vertical direction. The number of convex portions 60b is not limited to two, and may be one or three or more.

  Prior to attachment of the surrounding member 50, the operation unit cover 60 is put on the joint member 10 and the operation unit main body 20 from below. As the operation unit cover 60 is attached, the convex portion 60 b fits into the groove 21 b of the attachment portion 21, and the inward flange 60 a contacts the lower end of the attachment portion 21. By fitting the convex portion 60b into the groove 21b, the rotation of the operation portion cover 60 with respect to the operation portion main body 20 is restricted. For this reason, the entire operation unit A1 can be rotated by gripping and rotating the operation unit cover 60. The inward flange 60 a is sandwiched between the lower end of the mounting portion 21 and the upper end of the surrounding member 50 after the surrounding member 50 is attached. Thereby, the operation unit cover 60 is attached to the operation unit main body 20.

  The plug member A2 includes a plug body 70 and an annular seal member 5. The plug member A2 is provided in the introduction space R1 so as to be movable along the water discharge direction DR1, and opens and closes the opening OP2 of the water introduction hole 22a according to the rotation of the operation portion A1. That is, the plug member A2 opens and closes the opening of the straight flow path P2.

  As shown in FIGS. 2 and 5, the plug main body 70 includes a closing plate 71, a holding portion 72, a positioning column 73, and a positioning column 74. The plug body 70 can be made of a metal material or a resin material. In terms of manufacturing cost reduction, it is preferable to use a resin material. In order to smooth the sliding with the coil spring 2 or the like, it is more preferable to use a resin material having excellent slidability. Examples of the resin material having excellent slidability include polyacetal.

  The blocking plate 71 has a disk shape and is disposed so as to cover the opening OP2 of the water guide hole 22a in the switching surface S1 from above.

  The holding portion 72 has a cylindrical shape that protrudes downward from the center of the lower surface of the closing plate 71. The outer diameter of the holding part 72 is smaller than the inner diameter of the water guide hole 22a. A holding groove 72a is formed on the circumferential surface of the holding portion 72, and the seal member 5 is accommodated in the holding groove 72a.

  The seal member 5 can be made of a rubber material such as nitrile rubber (NBR) or ethylene propylene rubber (EPDM). A general-purpose O-ring may be used as the seal member 5. The seal member 5 seals between the lower surface of the blocking plate 71 and the expanded surface 22d. Thereby, opening OP2 of the water conveyance hole 22a is obstruct | occluded.

  The positioning column 73 has a cross-shaped cross-sectional shape and protrudes downward from the center of the lower surface of the holding portion 72. The positioning column 73 enters the water guide hole 22a. Thereby, the position of the blocking plate 71 is held above the water guide hole 22a.

  The positioning column 74 has a cross-sectional shape, and protrudes upward from the center of the upper surface of the closing plate 71. The positioning column 74 enters the coil spring 2. Thereby, the coil spring 2 is held on the closing plate 71.

  The coil spring 2 is disposed in a compressed state between the bottom surface of the spring accommodation hole 10 b and the top surface of the closing plate 71. The coil spring 2 in the compressed state pushes the plug member A2 toward the switching surface S1 by the repulsive force. That is, the coil spring 2 pushes the plug member A2 from the joint member 10 side to the switching surface S1 side.

  The repulsive force of the coil spring 2 is set to 1.6 N, for example, in a state where the plug member A2 closes the opening OP2 of the water guide hole 22a (hereinafter simply referred to as “closed state”), but is not limited thereto. . Examples of the setting range of the repulsive force of the coil spring 2 in the closed state include 1 to 3N. If the repulsive force of the coil spring 2 is less than 1N, there is a possibility that the opening OP2 of the water guide hole 22a is not sufficiently closed when the inside of the introduction space R1 is in a low water pressure state. The low water pressure state means, for example, a state in which the water pressure in the introduction space R1 is about 0.05 MPa or less.

  The spring constant of the coil spring 2 is set to 0.4 N / mm, for example, but is not limited thereto. Examples of the setting range of the spring constant of the coil spring 2 include 0.4 to 0.6 N / mm. If the spring constant is too high, the force required to rotate the operation portion A1 increases, and the operability decreases. In addition, the repulsive force of the coil spring 2 may not be within a desired range due to variations in the compression amount of the coil spring 2 due to variations in the dimensions of each component. On the other hand, if the spring constant is too low, there is a possibility that the opening OP2 of the water guide hole 22a is not sufficiently closed when the inside of the introduction space R1 is in the low water pressure state.

  In the present embodiment, the coil spring 2 is used as an example of the elastic member, but is not limited thereto. For example, a leaf spring or a foam material may be used as the elastic member. Note that the coil spring is superior to other types of elastic members in that it can be easily placed so as to surround the plug member. Examples of the material of the coil spring 2 include hard steel wire, piano wire, oil temper wire, or stainless steel wire. From the viewpoint of rust prevention or corrosion resistance, a stainless steel wire is preferable.

  Three arm portions 75 projecting radially are formed on the peripheral portion of the closing plate 71. The arm portion 75 constitutes the cam mechanism A3 in cooperation with the cam 24 and the guide slit 16a. As shown in FIG. 8, the three arm portions 75 enter the three guide slits 16a, respectively. The three cams 24 are respectively located under the three arm portions 75.

  In the plan view, the three cams 24 are along the same circle C1. The center of the circle C1 coincides with the central axis CL1. The protrusion height of the cam 24 with respect to the switching surface S1 (hereinafter simply referred to as “protrusion height”) varies depending on the position along the circumferential direction of the circle C1. Specifically, each cam 24 is configured by one end 24a, an inclined portion 24c, and the other end 24b that are continuous along the circumferential direction of the circle C1 (see FIG. 9). The protruding height of the one end 24a is smaller than the protruding height of the other end 24b. The protruding height of the inclined portion 24c gradually increases as it goes from the one end portion 24a side to the other end portion 24b side. The height of the inclined portion 24c coincides with the height of the one end portion 24a on the one end portion 24a side, and coincides with the height of the other end portion 24b on the other end portion 24b side.

  The cam 24 rotates according to the rotation of the operation unit main body 20. On the other hand, the rotation of the arm portion 75 entering the guide slit 16a is restricted. For this reason, when the operation portion A1 is rotated, the height of the cam 24 under the arm portion 75 changes. Accordingly, the height of the plug member A2 in the introduction space R1 changes. As described above, the cam mechanism A3 including the arm portion 75, the cam 24, and the guide slit 16a functions to move the plug member A2 in a direction orthogonal to the switching surface S1 according to the rotation of the operation portion A1. To do.

  As shown in FIG. 10, when the one end 24 a is positioned below the arm portion 75, the height of the plug member A <b> 2 is the lowest due to the repulsive force of the coil spring 2 from above. At this time, the seal member 5 is in close contact with both the lower surface of the closing plate 71 and the expanded surface 22d. Thereby, opening OP2 of the water conveyance hole 22a is obstruct | occluded. In a state where the opening OP2 is closed by the plug member A2, the water in the introduction space R1 enters the recess R2 through the water guide hole 21a and the water guide hole 32a, and flows out from the shower water discharge hole 41a (see FIG. 2). By passing through a plurality of scattered shower water discharge holes 41a, the water discharge becomes shower-like.

  Thus, the water conveyance hole 21a, the water conveyance hole 32a, and the recessed part R2 comprise the shower flow path P1. The shower channel P1 opens to the switching surface S1, and guides water from the introduction space R1 to the shower water discharge hole 41a.

  As shown in FIG. 11, when the other end 24b is positioned below the arm 75, the plug member A2 is lifted against the repulsive force of the coil spring 2 from above, and the seal member 5 is lifted from the expanded surface 22d. Separate. Thereby, the opening OP2 is opened. In the state where the opening OP2 is opened, the water in the introduction space R1 also enters the water guide hole 22a. The water that has entered the water guide hole 22a spreads around the outlet 22 through the slit 22b. The water spread around the outlet 22 passes through the gap between the peripheral wall 42 and the surrounding member 50 and flows out from the straight water outlet OP1.

  The water discharged from the straight water outlet OP1 heads toward the center of the flat plate portion 41 while surrounding the water discharged from the shower water discharge hole 41a. Thereby, the water discharged from the straight water discharge port OP1 and the shower water discharge hole 41a is bundled and flows downward, and the water discharge becomes straight.

  Thus, the water guide hole 22a, the slit 22b, and the gap between the peripheral wall portion 42 and the surrounding member 50 constitute a straight flow path P2. The straight flow path P2 opens to the switching surface S1, and guides water from the introduction space R1 to the straight water outlet OP1.

  According to the water discharge structure 1 described above, the water discharge state is switched between a straight shape and a shower shape by opening and closing the opening OP2 of the straight flow path P2 according to the rotation of the operation portion A1. In any water discharge state, a water flow from the joint member 10 side toward the switching surface S1 side is generated in the introduction space R1. This water flow causes a force from the joint member 10 side to the switching surface S1 side to act on the plug member A2 in the introduction space R1. In other words, the direction of the force applied by the water flow coincides with the direction of the force applied by the coil spring 2. Since both the force by the coil spring 2 and the force by the water flow act toward the switching surface S1, the plug member A2 is firmly pressed against the switching surface S1. For this reason, even when the plug member A2 or the coil spring 2 is deteriorated, the straight flow path P2 is firmly closed. Furthermore, since the force of the water flow does not resist the force of the coil spring 2, the initial value of the force of the coil spring 2 can be set small. Thereby, since the burden on the plug member A2 in a state where no water flow is generated is reduced, the deterioration of the plug member A2 is reduced. From these things, the fall of switching performance can be controlled.

  The water discharge structure 1 further includes a cam mechanism A3 that moves the plug member A2 in a direction orthogonal to the switching surface S1 according to the rotation of the operation unit A1. For this reason, the straight flow path P2 can be opened and closed by the cam mechanism A3. Since the stopper member A2 is moved in a direction orthogonal to the switching surface S1, friction between the switching surface S1 and the stopper member A2 is greatly reduced. Thereby, since the fall of the sealing performance of plug member A2 is suppressed, the fall of switching performance can further be controlled.

  In the water discharge structure 1, the center of the water guide hole 22a coincides with the central axis CL1, and the opening OP2 of the water guide hole 22a is formed at the center of the switching surface S1. As a result, the water in the introduction space R1 is guided straight along the central axis CL1 until it reaches the slit 22b from the opening OP2. For this reason, the dispersion | variation in the outflow amount of the water for every slit 22b is reduced. Therefore, since the variation in the water discharge amount in the circumferential direction of the straight water discharge port is reduced, the inclination of the water discharge direction due to the variation can be suppressed.

  The shower spout 41a and the straight spout OP1 are constituted by a water sprinkling member 40 and a surrounding member 50, and the water sprinkling member 40 and the surrounding member 50 are detachable from the downstream side. For this reason, the constituent members of the shower water discharge hole 41a and the straight water discharge port OP1 can be easily attached and detached without being obstructed by other members. In addition, since opening and closing of the straight water outlet OP1 is performed by the plug member A2 provided in the introduction space R1, it is not necessary to provide the water spray member 40 and the surrounding member 50 with a structure for switching the water discharge state. For this reason, the simplification of the structural member of the shower water discharge hole 41a and the straight water discharge port OP1 is possible. This also contributes to making the watering member 40 and the surrounding member 50 detachable from the downstream side.

[Second Embodiment]
The main difference between the water discharge structure 1A according to the second embodiment and the water discharge structure 1 according to the first embodiment is that the water discharge structure 1A does not have a mechanism for moving the plug member. The water discharge structure 1A includes an operation unit A6, a plug member A4, and a joint member 10A in place of the operation unit A1, the plug member A2, and the joint member 10 of the water discharge structure 1.

  The operation unit A6 is obtained by replacing the operation unit body 20 of the operation unit A1 with an operation unit body 20A. Similar to the operation unit A1, the operation unit A6 is provided on the downstream side of the joint member 10A so as to be rotatable about an axis along the water discharge direction DR1. The operation unit main body 20A differs from the operation unit main body 20 in that the water guide hole 22a in the derivation unit 22 does not reach the switching surface S1. A water guide hole 25a that opens to the switching surface S1 is formed in the raised portion 25 of the operation portion main body 20A. The position of the water guide hole 25a is shifted to the outer peripheral side of the operation portion A6 with respect to the position of the water guide hole 22a. The water guide hole 25a is connected to the water guide hole 22a in the operation unit main body 20, and constitutes the straight flow path P2 in cooperation with the water guide hole 22a. The opening OP3 of the water guide hole 25a in the switching surface S1 corresponds to the opening of the straight flow path P2. That is, the opening of the straight flow path P2 in the switching surface S1 is formed at a position shifted from the rotation center CL1 of the operation unit A6 to the outer peripheral side of the operation unit A6.

  The plug member A4 has a plug body 80 instead of the plug body 70 of the plug member A2. The plug body 80 includes a closing plate 81 and a positioning column 82.

  The blocking plate 81 has a disk shape and is disposed so as to cover the opening OP3 of the straight flow path P2 from above. For this reason, the closing plate 81 is also arranged at a position shifted from the rotation center CL1 of the operation unit A6 toward the outer peripheral side of the operation unit A6. On the lower surface of the closing plate 81, an annular holding groove 81a surrounding the opening OP3 is formed. An annular seal member 5 is accommodated in the holding groove 81a. The seal member 5 seals the gap between the switching surface S1 and the closing plate 81 around the opening OP3. Thereby, the opening OP3 is closed.

  The positioning column 82 protrudes upward from the upper surface of the closing plate 81. The positioning column 82 is located closer to the central axis CL <b> 1 than the closing plate 81. The positioning column 82 enters the coil spring 2. The coil spring 2 is held on the closing plate 81 by the positioning column 82. The positioning column 82 and the coil spring 2 are accommodated in the spring accommodating hole 10d of the joint member 10A.

  The joint member 10 </ b> A is different from the joint member 10 in that the joint member 10 </ b> A has a spring housing hole 10 d and two guide protrusions 17 instead of the spring housing hole 10 c and the guide tube portion 16. The spring accommodation hole 10d is different from the spring accommodation hole 10c in that it is displaced toward the outer peripheral side with respect to the central axis CL1. By arranging the spring accommodation hole 10d in this manner, the positioning column 82 and the coil spring 2 can be accommodated in the spring accommodation hole 10d.

  As described above, since the positioning column 82 is located closer to the rotation center CL1 than the closing plate 81, the spring accommodating hole 10d can be formed closer to the rotation center CL1 than the closing plate 81. It has become. Thereby, it is easy to ensure the formation position of the spring accommodating hole 10d in the joint member 10A.

  The two guide protrusions 17 are positioned so as to sandwich the closing plate 81 and protrude downward (see FIG. 13). The two guide protrusions 17 each have an arcuate cross-sectional shape along the outer diameter of the closing plate 81. The guide convex part 17 regulates the movement of the closing plate 81 accompanying the rotation of the operation part A6.

  The coil spring 2 housed in the spring housing hole 10d is disposed in a compressed state between the bottom surface of the spring housing hole 10d and the top surface of the closing plate 81. The coil spring 2 in the compressed state pushes the plug member A4 toward the switching surface S1 by the repulsive force. That is, the coil spring 2 pushes the plug member A4 from the joint member 10A side to the switching surface S1 side. The repulsive force and spring constant of the coil spring 2 are set in the same manner as in the first embodiment.

  As described above, the opening OP3 of the straight flow path P2 is formed at a position shifted from the rotation center CL1 of the operation portion A6 toward the outer peripheral side. For this reason, the opening OP3 moves according to the rotation of the operation unit A6. On the other hand, the movement of the plug member A4 accompanying the rotation of the operation portion A6 is restricted by the guide convex portion 17. Therefore, when the operation portion A6 is rotated, the relative position of the opening OP3 with respect to the plug member A4 changes.

  In the state of FIG. 12, the opening OP3 is closed by the plug member A4. In this case, the water in the introduction space R1 flows out of the shower water discharge hole 41a through the shower channel P1 similar to that in the water discharge structure 1.

  When the operation portion A6 is rotated starting from the state of FIG. 12, the opening OP3 is displaced from the position of the plug member A4 and is opened as shown in FIG. In the state where the opening OP3 is opened, the water in the introduction space R1 enters the water guide hole 22a through the water guide hole 25a. The water that has entered the water guide hole 22a spreads around the outlet 22 through the slit 22b. The water spread around the outlet 22 passes through the gap between the peripheral wall 42 and the surrounding member 50 and is discharged from the straight water outlet OP1. Thus, the water guide hole 25a, the water guide hole 22a, the slit 22b, and the gap between the peripheral wall portion 42 and the surrounding member 50 constitute the straight flow path P2.

  According to the water discharge structure 1A, since the straight flow path P2 can be opened and closed without providing a mechanism for moving the plug member A4 in accordance with the rotation of the operation portion A6, the structure can be simplified.

[Third Embodiment]
The main difference between the water discharge structure 1B according to the third embodiment and the water discharge structure 1A according to the second embodiment is that, in the water discharge structure 1B, the straight flow path P2 is provided at a plurality of locations surrounding the rotation center CL1 of the operation unit. An opening OP4 is formed.

  The water discharge structure 1B includes a joint member 10B, an operation part A7, and a plug member A5 instead of the joint member 10A, the operation part A6, and the plug member A4 of the water discharge structure 1A.

  The joint member 10B is obtained by replacing the spring housing hole 10c and the guide convex portion 17 of the joint member 10A with a plug housing hole 10f and a guide tube portion 18. The plug accommodation hole 10f is connected to the lower side of the water conveyance hole 10a and opens downward. The center of the stopper accommodating hole 10f coincides with the central axis CL1. The inner surface of the stopper accommodating hole 10f functions as a guide for restricting the movement of the stopper main body 90 in the radial direction of the joint member 10, as will be described later.

  The guide tube portion 18 protrudes downward from the bottom surface of the stopper housing hole 10f. The center of the guide tube portion 18 coincides with the center axis CL1. Three guide slits 18a are formed at the tip of the guide tube portion 18 (see FIG. 16). The three guide slits 18a are arranged in the circumferential direction of the guide tube portion 18, and are respectively open along the water discharge direction DR1 and at the lower side. As will be described later, the guide tube portion 18 restricts the rotation of the plug body 90.

  The inner diameter of the upper portion of the guide cylinder portion 18 matches the inner diameter of the water guide hole 10a. The inner diameter of the lower part of the guide cylinder part 18 is larger than the inner diameter of the water guide hole 10a. The inner surface of the lower part of the guide cylinder part 18 constitutes a spring accommodating hole 10e. As will be described later, the coil spring 2 is accommodated in the spring accommodating hole 10e.

  The operation unit A7 is obtained by replacing the operation unit body 20A of the operation unit A6 with an operation unit body 20B. Since the operation unit main body 20 </ b> B also functions as the partition member 30, the operation unit A <b> 7 does not include the partition member 30. Similar to the operation unit A6, the operation unit A7 is provided on the downstream side of the joint member 10B so as to be rotatable about an axis along the water discharge direction DR1.

  The operation portion main body 20B includes an attachment portion 21B, a partition portion 26, and a connection portion 27. The attachment portion 21B has a cup shape opened upward. The attachment portion 21 </ b> B covers the fitting portion 14 of the joint member 10 </ b> B from below similarly to the attachment portion 21. The attachment part 21B covering the fitting part 14 is detachably attached to the joint member 10B by the two fasteners 3 in the same manner as the attachment part 21 (see FIG. 18). The operation unit main body 20B is rotatable about the central axis CL1.

  The bottom surface in the attachment portion 21B faces the joint member 10B side. That is, the bottom surface of the attachment portion 21B corresponds to the switching surface S1. An introduction space R1 for receiving water from the joint member 10B is formed below the attachment portion 21B. That is, an introduction space R1 for receiving water from the joint member 10 is formed on the upstream side of the switching surface S1 in the operation portion A7.

  Three water guide holes 21d surrounding the central axis CL1 are formed at the bottom of the attachment portion 21B. Each of the three water guide holes 21d opens in the switching surface S1. The water guide hole 21d constitutes a straight flow path P2 described later. The opening OP4 of the water guide hole 21d in the switching surface S1 corresponds to the opening of the straight flow path P2. That is, the opening of the straight flow path P2 in the switching surface S1 is formed in three places surrounding the rotation center CL1 of the operation portion A7.

  A flange portion 21e is provided on the outer periphery of the attachment portion 21B over the entire periphery. A male screw portion 21f is formed on the outer periphery of the lower portion of the attachment portion 21B. The male screw portion 21f is fitted to the female screw portion 50a of the surrounding member 50. A smooth seal surface 21g is formed over the entire circumference between the flange portion 21e and the male screw portion 21f, and the seal member 6 is mounted on the outer periphery thereof.

  The partition portion 26 has a cup shape opened downward and is located below the attachment portion 21B. The center of the partition portion 26 coincides with the center of the attachment portion 21B. Three claw portions 26 a arranged in the circumferential direction are formed on the outer periphery of the partition portion 26. The nail | claw part 26a is used for attachment of the water sprinkling member 40 similarly to the nail | claw part 31a.

  The connection part 27 is interposed between the attachment part 21B and the partition part 26, and connects these central parts. The connection portion 27 is formed on the inner side of the water guide hole 21d of the attachment portion 21B. Around the connecting portion 27, three ribs 27b are formed radially (see FIG. 17). The three ribs 27b are arranged alternately with the three water guide holes 21d in the circumferential direction, and are connected to the lower surface of the attachment portion 21B and the upper surface of the partition portion 26, respectively. By the connection part 27, the attachment part 21B and the partition part 26 are kept in a separated state. Between the attachment part 21B and the partition part 26, the below-mentioned straight flow path P2 is comprised with 21d of water conveyance holes.

  In the central portion of the connecting portion 27, a water guide hole 27a that allows the inside of the attachment portion 21B and the inside of the partition portion 26 to communicate with each other is formed. The water guide hole 27a opens in the switching surface S1.

  The water sprinkling member 40 of the operation part A7 covers the partition part 26 from below and is detachably attached. The peripheral wall part 42 of the water sprinkling member 40 surrounds the partition part 26, and the collar part 42b is hung on the claw part 26a. An annular seal member 7 is disposed in the water spray member 40 along the peripheral edge of the flat plate portion 41. The seal member 7 seals between the peripheral edge of the partition portion 26 and the peripheral edge of the flat plate portion 41.

  The surrounding member 50 of the operation portion A7 is detachably attached to the attachment portion 21B from below. The female screw portion 50a of the surrounding member 50 is assembled to the male screw portion 21f of the attachment portion 21B. The distal end portion of the surrounding member 50 is in close contact with the seal member 6 from the outer peripheral side. The seal member 6 seals between the inner surface of the surrounding member 50 and the outer surface of the attachment portion 21B.

  A gap is formed between the inner surface of the surrounding member 50 and the outer surface of the peripheral wall portion 42. This gap constitutes a straight flow path P2 to be described later together with the water guide hole 21d and the like. A gap is formed between the upper surface of the inward flange 50 b and the lower surface of the flat plate portion 41. A straight water outlet OP1 is formed by this gap.

  The plug member A5 has a plug body 90 instead of the plug body 80. The plug body 90 includes a closing plate 91, three raised portions 92, and four positioning columns 93.

  The blocking plate 91 has a disk shape and is disposed so as to block the openings OP4 of all the water guide holes 21d from above. Three holding grooves 91 b are formed on the lower surface of the closing plate 91. The three holding grooves 91b are located at three locations corresponding to the opening OP4 of the water guide hole 21d, and each has an annular shape surrounding the opening OP4. Three seal members 5 are accommodated in the three holding grooves 91b, respectively. The seal member 5 seals the gap between the switching surface S1 and the closing plate 91 around the opening OP4.

  A water guide hole 91 c is formed in the central portion of the blocking plate 91. The closing plate 91 is formed with three water guide holes 91a surrounding the water guide holes 91c. The three water guide holes 91a are alternately arranged with the three holding grooves 91b in the circumferential direction. The water guiding holes 91a and 91c penetrate the blocking plate 91, respectively.

  The three raised portions 92 are located at three locations corresponding to the holding grooves 91 b on the upper surface of the closing plate 91. The raised portion 92 has an arcuate wall 92a and a rib 92b. The arc-shaped wall 92a has an arc shape concentric with the closing plate 91 in plan view. The outer peripheral surface of the arc-shaped wall 92a is along the inner surface of the stopper accommodating hole 10f. The rib 92b protrudes vertically from the upper surface of the closing plate 91 on the inner peripheral side of the arc-shaped wall 92a. The rib 92b is connected to the central portion of the arc-shaped wall 92a in plan view, and has a T-shape together with the arc-shaped wall 92a.

  The arc-shaped wall 92a is fitted in the stopper accommodating hole 10f. Thereby, the movement of the blocking plate 91 in the radial direction is restricted. The rib 92b enters the guide slit 18a. Thereby, the rotation of the closing plate 91 is restricted.

  The four positioning columns 93 are positioned so as to surround the water guide hole 91 c and protrude upward from the upper surface of the blocking plate 91. The four positioning columns 93 are connected to each other at the upper end. The four positioning columns 93 enter the coil spring 2. Thereby, the coil spring 2 is held on the closing plate 91.

  The coil spring 2 and the positioning column 93 are both housed in the spring housing hole 10e. The coil spring 2 housed in the spring housing hole 10e is disposed in a compressed state between the bottom surface of the spring housing hole 10e and the top surface of the closing plate 91. The coil spring 2 in the compressed state pushes the plug member A5 toward the switching surface S1 by the repulsive force. That is, the coil spring 2 pushes the plug member A5 from the joint member 10B side to the switching surface S1 side. The repulsive force and spring constant of the coil spring 2 are set in the same manner as in the first embodiment.

  In the state of FIG. 15, all the openings OP4 are closed by the plug member A5. The water in the introduction space R1 is guided to the water guide hole 27a through the water guide hole 91c. The water guided to the water guide hole 27a enters the partition part 26 and is discharged from the partition part 26 through the shower water discharge hole 41a. Thus, the water guide hole 27a and the inside of the partition part 26 constitute the shower channel P1.

  When the operation portion A7 is rotated with the state of FIG. 15 as a starting point, all the openings OP4 are moved accordingly, and are displaced from the positions of the holding groove 91b and the seal member 5. When the rotation of the operation portion A7 is continued, all the openings OP4 move below the water guide holes 91a (see FIG. 18). Thereby, all the openings OP4 are opened. In a state where the opening OP4 is opened, the water in the introduction space R1 also flows to the water guide hole 21d side, and flows out of the attachment portion 21B through the water guide hole 21d. The water that has flowed out of the attachment portion 21B passes between the partition portion 26 and the connection portion 27, between the peripheral wall portion 42, and the surrounding member 50, and is discharged from the straight water discharge port OP1. Thus, the water guide hole 21d, between the partition part 26 and the connection part 27, and between the peripheral wall part 42 and the surrounding member 50 constitute a straight flow path P2.

  In the third embodiment, the openings OP4 are formed at a plurality of locations surrounding the rotation center CL1, and the plug member A5 opens and closes all the openings OP4 simultaneously. For this reason, in the circumferential direction surrounding the rotation center CL1, variation in the amount of inflow water into the straight flow path P2 can be suppressed, and variation in flow velocity in the straight flow path P2 can be reduced. Thereby, since the dispersion | variation in the water discharge amount in the circumferential direction of the straight water discharge outlet OP1 is reduced, the inclination of the water discharge direction resulting from the said dispersion | variation can be suppressed.

  Although the embodiment has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the inner surface of the inward flange 50b constituting the straight water discharge port OP1 does not necessarily have to be orthogonal to the central axis CL1. The inner surface of the inward flange 50b may be inclined so as to move away from the flat plate portion 41 toward the center side (see FIG. 15). In this case, an example of the inclination angle of the inner surface of the inward flange 50b with respect to the central axis CL1 is 80 °, but is not limited thereto. The inclination angle is, for example, preferably 45 to 90 °, more preferably 60 to 90 °, and particularly preferably 70 to 85 °.

  The water supply device to which the water discharge structure described above is applied is not limited to the faucet device, and can be applied to other various water supply devices. Examples of other water supply devices include a faucet device for a bathroom and a watering device for a garden.

  DESCRIPTION OF SYMBOLS 1,1A, 1B ... Water discharge structure, 2 ... Coil spring (elastic member), 10, 10A, 10B ... Joint member (joint part), 40 ... Sprinkling member, 41 ... Flat plate part, 41a ... Shower water discharge hole, 50 ... Enclosing member DESCRIPTION OF SYMBOLS 100 ... Water faucet device (water supply device) 110 ... Water conduit, A1, A6, A7 ... Operation part, A2, A4, A5 ... Plug member, A3 ... Cam mechanism, CL1 ... Center of rotation, DR1 ... Water discharge direction , OP1, straight outlets, OP2, OP3, OP4, straight channel openings, P1, shower channels, P2, straight channels, R1, introduction spaces, S1, switching surfaces.

Claims (6)

A water discharge structure for adjusting the water discharge state from the end of the water conduit,
A joint provided at an end of the water conduit;
An operation part provided on the downstream side of the joint part so as to be rotatable around an axis along the water discharge direction;
A plurality of shower spout holes formed so as to be scattered at the downstream end of the operation section;
An annular straight spout formed at the downstream end of the operation section so as to surround all the shower spouts;
A switching surface provided in the operation portion so as to face the joint portion side;
An introduction space that is formed on the upstream side of the switching surface in the operation portion and receives water from the joint portion side;
A shower channel that opens to the switching surface and guides water from the introduction space to the shower spout;
A straight channel that opens to the switching surface and guides water from the introduction space to the straight water outlet;
A plug member that is provided in the introduction space in a movable state along the water discharge direction, and opens and closes the opening of the straight flow path according to the rotation of the operation unit;
A water discharge structure comprising: an elastic member that pushes the stopper member from the joint portion side toward the switching surface side.   The water discharge structure according to claim 1, further comprising a cam mechanism that moves the plug member in a direction orthogonal to the switching surface in accordance with the rotation of the operation unit.   The opening of the straight channel on the switching surface is formed at a position shifted from the rotation center of the operation unit, and is moved and opened according to the rotation of the operation unit. Water discharge structure. The opening of the straight flow path in the switching surface is formed at a plurality of locations surrounding the rotation center of the operation unit,
The water discharge structure according to claim 3, wherein the plug member is configured to simultaneously open and close all the openings of the straight flow path on the switching surface. A sprinkling member and an enclosing member are provided at the downstream end of the operation unit,
The water sprinkling member has a flat plate portion that intersects the discharge direction, and is detachably attached from the downstream side,
The surrounding member has a cylindrical shape surrounding the periphery of the flat plate portion, and is detachably attached from the downstream side,
All the shower water discharge holes are formed in the flat plate portion,
The water discharge structure according to claim 1, wherein the straight water discharge port is formed by a gap between the flat plate portion and the surrounding member.   The apparatus for water supply provided with the water discharging structure as described in any one of Claims 1-5.

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