WO2015146360A1

WO2015146360A1 - Water discharge device

Info

Publication number: WO2015146360A1
Application number: PCT/JP2015/054115
Authority: WO
Inventors: 田村　秀樹; 清水　晃治
Original assignee: 株式会社Ｌｉｘｉｌ
Priority date: 2014-03-28
Filing date: 2015-02-16
Publication date: 2015-10-01
Also published as: CN106102533B; JP6193165B2; CN106102533A; JP2015188621A

Abstract

A water discharge device is provided with: a water discharge member (20) having a water flow passage (25) formed therein; water discharge sections (31) having formed therein water discharge openings (41) for discharging water supplied to the water flow passage (25); and a single valve body (70) displaced according to the pressure or the flow rate of the water supplied to the water flow passage (25). The water discharge device is characterized by being configured in such a manner that: communication passages (57) each connecting to the water discharge opening (41) of one of the water discharge sections (31) are formed within the water discharge member (20); and whether or not water is to be supplied to each of the communication passages (57) is determined by the displacement of the valve body (70).

Description

Water discharge device

The present invention relates to a water discharge device used in a bathroom, a sink, a wash basin and the like.

In a water discharge device such as a shower device, a plurality of water discharge ports are provided in a water discharge member such as a shower head, and when water is supplied to the inside thereof, shower water is discharged from each water discharge port. If the flow rate of the water supplied to the inside is too small, the flow rate of the shower water becomes too slow and the contact condition becomes weak, so that the feeling of use may be lacking. On the other hand, if the flow rate is too high, the flow rate of the shower water becomes too fast, the skin irritation is too strong, and the water splash tends to occur.

As a countermeasure, Patent Document 1 proposes a structure in which a valve body that is displaced by water pressure is provided inside the shower head, and the total opening area of the water discharge port that discharges water by the displacement is increased or decreased. When the flow rate is small, the total opening area of the spout is reduced, the rate of flow rate fluctuation with respect to the flow rate change is increased, and the flow rate is easy to hit. In addition, when the flow rate is large, the total opening area of the spout is increased, the rate of flow rate fluctuation with respect to the flow rate change is suppressed, and it becomes easy to achieve a flow rate that suppresses skin irritation and water splashing.

JP 2000-262427 A

In the structure of Patent Document 1, a unit including a valve body, a partition wall, and a spring as a unit is used to switch the total opening area of the water outlet from which water is discharged to two stages. Moreover, in patent document 1, in order to switch this to three steps or more, the same number of units as the switching number are required. Therefore, an increase in the number of parts has led to an increase in the size of the entire apparatus and an increase in manufacturing costs.

This invention is made in view of such a subject, and the objective is to provide the water discharging apparatus which can suppress the number of parts required when switching the total opening area of the water outlet which discharges water.

In order to solve the above-described problem, an aspect of the present invention relates to a water discharge device. Displacement according to the water pressure or flow rate of the water supplied to the water passage, the water discharge member in which the water passage is formed, a plurality of water discharge portions formed with water outlets for discharging water supplied to the water passage A plurality of communication passages that communicate with one of the water discharge ports of the plurality of water discharge portions, and each of the plurality of communication passages is caused by the displacement of the valve body. It is characterized by being comprised so that the presence or absence of the water flow with respect to can be switched.
According to this aspect, the presence or absence of water flow in each communication passage can be switched by a single valve body, and a plurality of valve bodies are not necessary for switching the total opening area of the water outlet from which water is discharged to three or more stages.

Further, in the above-described aspect, the plurality of communication passages may be formed such that respective inlets open toward a space in which the valve body can move, and the inlets are arranged along the displacement direction of the valve body. .
According to this aspect, when the valve body is displaced, the inlet of each communication path is opened and closed by the valve body. Therefore, the presence or absence of water flow in each communication path can be switched without requiring a complicated mechanism.

Moreover, in the above-mentioned aspect, you may comprise so that the water discharge range from a some water discharging part may increase / decrease in one direction according to the displacement amount of a valve body.
According to this aspect, the user can easily visually confirm the water discharge range from the water discharge member, and the user can roughly grasp the current water pressure or flow rate.

Moreover, in the above-described aspect, the water discharge pattern from the plurality of water discharge units can be switched to three or more stages by switching the presence or absence of water flow to the plurality of communication passages, and the flow velocity range that each of the plurality of water discharge patterns can take, The opening of the water outlet is such that the first stage water discharge pattern is not more than a predetermined upper limit value, the last stage water discharge pattern is not less than a predetermined lower limit value, and the middle stage water discharge pattern is not less than the lower limit value and not more than the upper limit value. An area may be defined.
According to this aspect, the deviation of the flow velocity range in each water discharge pattern can be reduced.

Moreover, in the above-described aspect, the water discharge pattern from the plurality of water discharge units can be switched to three or more stages by switching the presence or absence of water flow to the plurality of communication passages, and the flow velocity range that can be taken for each of the plurality of water discharge patterns, In the water discharge pattern in the middle stage of the second or higher stage, the maximum value thereof is lower than the maximum value of the water discharge pattern in the previous stage, and in the water discharge pattern of the third stage or higher, the minimum value is in the previous stage. The opening area of the water discharge port may be determined so as to be lower than the minimum value of the water discharge pattern.
According to this aspect, it is possible to achieve flow velocity characteristics such that the upper limit value and lower limit value of the flow velocity range in each water discharge pattern gradually decrease.

Moreover, in the above-described aspect, the water discharge pattern from the plurality of water discharge units can be switched to three or more stages by switching the presence or absence of water flow to the plurality of communication passages, and the flow velocity range that each of the plurality of water discharge patterns can take, In the water discharge patterns of the second and higher stages, the opening area of the water outlet may be determined so that the minimum value thereof is higher than the maximum value of the water discharge pattern of the previous stage.
According to this aspect, it is possible to achieve flow velocity characteristics such that the upper limit value and lower limit value of the flow velocity range in each water discharge pattern gradually increase.

According to the present invention, the number of parts required for switching the total opening area of the water outlet from which water is discharged can be reduced.

It is a fragmentary sectional side view which shows the water discharging apparatus which concerns on 1st Embodiment. It is a front view which shows the external appearance of the watering member which concerns on 1st Embodiment. It is a figure which shows the flow of water when water is supplied to the water flow path of the water discharging apparatus which concerns on 1st Embodiment. It is a fragmentary sectional side view which shows the water discharging apparatus which concerns on 2nd Embodiment. It is a front view which shows the external appearance of the watering member which concerns on 2nd Embodiment. It is a figure which shows the flow of water when water is supplied to the water flow path of the water discharging apparatus which concerns on 2nd Embodiment. It is a front view which shows the external appearance of the watering member which concerns on 3rd Embodiment. It is a fragmentary sectional side view which shows the water discharging apparatus which concerns on 4th Embodiment. It is a front view which shows the water discharging apparatus which concerns on 5th Embodiment. It is a fragmentary sectional side view which shows the water discharging apparatus which concerns on 5th Embodiment. It is a figure which shows the flow of water when water is supplied to the water flow path of the water discharging apparatus which concerns on 5th Embodiment. It is a front view which shows the external appearance of the water discharging apparatus which concerns on 6th Embodiment. It is front sectional drawing which shows the water discharging apparatus which concerns on 6th Embodiment. It is a front view which shows the external appearance of the water discharging apparatus which concerns on 7th Embodiment. It is the sectional view on the AA line of FIG. It is a fragmentary sectional side view which shows the water discharging apparatus which concerns on 8th Embodiment. It is a functional block diagram which shows the control system of the water discharging apparatus which concerns on 8th Embodiment. It is a partial cross section side view which shows the water discharging apparatus which concerns on 9th Embodiment. It is a graph which shows the relationship between the flow volume and flow velocity when water is supplied to the water flow path of the water discharging member which concerns on 1st Embodiment. It is a graph which shows the relationship between the flow volume and flow velocity when water is supplied to the water flow path of the water discharging member which concerns on a 1st modification. It is a graph which shows the relationship between the flow volume and flow velocity when water is supplied to the water flow path of the water discharging member which concerns on a 2nd modification.

[First Embodiment]
FIG. 1: shows the partial cross section side view of the water discharging apparatus 10 which concerns on 1st Embodiment. The water discharge device 10 includes a water discharge member 20, a water spray member 30, a plurality of partition walls 50, a valve body 70, and an urging member 80.

The water discharge member 20 is a shower head. The water discharge member 20 includes a grip portion 21 and a head portion 23. The grip portion 21 is provided on the proximal end side of the water discharge member 20 and is formed in a cylindrical shape extending in one direction X. The head portion 23 is provided on the distal end side of the water discharge member 20 and is formed in a bottomed cylindrical shape that extends in a direction Y that intersects the direction X in which the grip portion 21 extends. The user can use the water discharging member 20 in a state where the user grasps the grip portion 21. Hereinafter, the direction X is referred to as a horizontal direction, and the direction Y is referred to as a vertical direction.

A continuous internal space is formed inside the grip portion 21 and the head portion 23, and a water passage 25 is formed by a part of the internal space. The head portion 23 is formed with a mounting opening 27 communicating with the outside in one of the longitudinal directions Y.

As for the water discharging member 20, the edge part of the holding part 21 which is the base edge part is connected to the one end part of the shower hose 29. FIG. The shower hose 29 has flexibility, and the other end is connected to a water supply device (not shown) such as a faucet. Water is supplied to the water passage 25 of the water discharge member 20 from a water supply device via a shower hose 29.

The water sprinkling member 30 is attached to the head part 23 so as to close the attachment opening 27. The water sprinkling member 30 is formed in a disk shape. The water sprinkling member 30 includes a first water discharge part 31 A, a second water discharge part 31 B, and a water discharge part 37.

FIG. 2 is a front view showing an appearance of the watering member 30. The first water discharge portion 31 A is an annular portion provided on the outer peripheral portion of the water spray member 30. In FIG. 2, the part sandwiched between the two-dot chain line L1 and the two-dot chain line L2 is the first water discharger 31A, and in FIG. 1, the range surrounded by the two-dot chain line S1 is the first water discharger 31A. The second water discharger 31B is an annular part provided on the inner peripheral side of the first water discharger 31A. In FIG. 2, the part sandwiched between the two-dot chain line L2 and the two-dot chain line L3 is the second water discharger 31B, and in FIG. 1, the range surrounded by the two-dot chain line S2 is the second water discharger 31B. In each of the

water discharge portions

31A and 31B, a plurality of water discharge ports 41 are formed that are annularly arranged with an equiangular interval in the circumferential direction. The water outlet 41 of each

water discharging part

31A, 31B is provided concentrically. The water discharge part 37 is provided in the center part of the water sprinkling member 30, and the water flow opening 39 is formed in the center position.

As shown in FIG. 1, the partition wall 50 is formed in a bottomed cylindrical shape, and includes a circular cylindrical vertical wall portion 51 and a circular annular horizontal wall portion 53. The plurality of partition walls 50 have a nested structure, and the respective vertical wall portions 51 are provided so as to be concentric, and the lateral wall portion 53 is provided so as to be closer to the water spray member 30 as the inner partition wall 50 is formed. Each partition wall 50 is integrated with the opening end of each partition wall 50 bonded to the back surface of the water spray member 30 by bonding or the like. Hereinafter, when distinguishing the partition 50 from the outside to the inside, they are referred to as a first partition 50A, a second partition 50B, and a third partition 50C.

In the plurality of partition walls 50, insertion holes 55 are formed in the respective lateral wall portions 53. The insertion hole 55 of each partition wall 50 is provided coaxially with the water flow port 39 of the water spray member 30. The valve body 70 is slidably inserted in each insertion hole 55 in the vertical direction Y. At this time, the valve body 70 is displaced in a direction (longitudinal direction Y) approaching and separating from the watering member 30.

The plurality of partition walls 50 divide the internal space of the head portion 23 into a plurality, and a plurality of

communication paths

57A and 57B are formed. A first communication path 57A is formed between the first partition 50A and the second partition 50B. A second communication path 57B is formed between the second partition wall 50B and the third partition wall 50C. A part of the water passage 25 is formed between the first partition wall 50 A and the inner wall surface of the head portion 23, and a storage chamber 59 is formed between the third partition wall 50 C and the water spray member 30. A space 61 in which the valve body 70 can move is provided between the water passage 25 and each communication passage 57. Hereinafter, the

communication passages

57A and 57B are collectively referred to as a communication passage 57.

Each communication passage 57 is formed such that each inlet 63 opens toward a space 61 in which the valve body 70 can move, and each inlet 63 is arranged along the displacement direction (vertical direction Y) of the valve body 70. The The first communication passage 57A is provided with a first water discharge portion 31A on the downstream side thereof, and communicates with the water discharge port 41 of the first water discharge portion 31A. The second communication passage 57B is provided with a second water discharge portion 31B on the downstream side thereof, and communicates with the water discharge port 41 of the second water discharge portion 31B.

The valve body 70 is constituted by a bottomed cylindrical rod. The valve body 70 is arranged with one bottom portion in the axial direction facing the watering member 30 side. An auxiliary water discharger 31 S is provided at the bottom of the valve body 70. A plurality of water discharge ports 41 are formed in the sub water discharge portion 31S. Inside the valve body 70, a water conduit 71 communicating with the water discharge port 41 of the sub water discharge portion 31S is formed. The end of the water conduit 71 opposite to the water sprinkling member 30 is open, and the water outlet 41 of the auxiliary water discharger 31 S is communicated with the upstream water passage 25 via the water conduit 71.

The urging member 80 is a coil spring and is accommodated in the accommodating chamber 59 of the head portion 23. The urging member 80 is interposed between the bottom of the valve body 70 and the back surface of the water spray member 30. The urging member 80 urges the valve body 70 toward one side in the axial direction. This urging direction is a direction along the longitudinal direction Y so as to approach the water passage 25. A first stopper 73 projects from the outer periphery of the valve body 70 at a position near the bottom. The valve body 70 is held at an initial position where the lateral wall portion 53 of the third partition wall 50 C and the first stopper 73 are engaged by the urging force of the urging member 80. When the valve body 70 is held at the initial position, the inlet 63 of each

communication passage

57A, 57B is closed by the outer surface 75 of the valve body 70, and the water passage 25 and each

communication passage

57A, 57B are interposed via the valve body 70. Separated. At this time, the valve body 70 closes the inflow port 63 by bringing the outer surface 75 into contact with the inner wall surface of the insertion hole 55 of each partition wall 50 which is the peripheral portion of the inflow port 63 of each of the

communication passages

57A and 57B. .

The water flow port 39 functions as a vent hole that communicates the space in the storage chamber 59 and the external space. The interior of the storage chamber 59 is maintained at atmospheric pressure by the water passage 39. Therefore, when the valve body 70 is displaced, the space in the accommodation chamber 59 does not become a high pressure, and the displacement resistance of the valve body 70 can be suppressed.

As shown in FIG. 2, a total of twelve spouts 41 are formed in each of the first spout unit 31A and the second spout unit 31B, and a total of six spouts 41 are formed in the sub-spout unit 31S. . The water discharge ports 41 of the

water discharge portions

31A, 31B, and 31S are formed to have the same opening diameter φ1 [mm]. Hereinafter, the

water discharge units

31A, 31B, and 31S are collectively referred to as the water discharge unit 31.

Next, the operation of the water discharge device 10 according to this embodiment will be described. FIG. 3 is a diagram showing the flow of water when water is supplied to the water passage 25. The direction of water flow is indicated by arrow P.

As shown in FIG. 3A, when water is supplied from the water supply device to the water passage 25 via the shower hose 29 when the valve body 70 is in the initial position, the water passage 25 passes through the water conduit 71. Water is passed through each of the water discharge ports 41 of the sub water discharge unit 31S. Water is discharged from the water outlets 41 of the sub-water discharger 31 S through the water outlet 39 of the water sprinkling member 30. When water is supplied to the water passage 25 from each of the water discharge ports 41 of the sub water discharge portion 31S, water is constantly discharged regardless of the amount of displacement of the valve body 70.

Further, when water is supplied to the water passage 25, the water pressure acts on the opening end surface and the inner bottom surface of the valve body 70, and the valve body 70 is displaced in the vertical direction Y according to the water pressure. As shown in FIG. 3B, the valve body 70 is displaced from the initial position against the urging force of the urging member 80. When the displacement amount increases, the inlet 63 of the first communication passage 57A is opened. Then, water is passed from the water passage 25 to the first communication passage 57A. Thereby, water is discharged from each water outlet 41 of 31 A of 1st water discharging parts.

As shown in FIG. 3 (c), when the displacement amount of the valve body 70 is further increased, the inlet 63 of the second communication passage 57B is opened, and the second communication passage 57B is also opened from the water passage 25 together with the first communication passage 57A. Water is passed. Thereby, water is also discharged from each water outlet 41 of the 2nd water discharging part 31B.

Thus, when the valve body 70 is displaced, the inflow port 63 of each communication path 57 is opened and closed by the valve body 70, and the water flow state that is the presence or absence of water flow to each communication path 57 is switched according to the displacement amount. It is done. The valve body 70 switches the water flow state of each communication passage 57 so that the number of communication passages 57 through which water flows increases as the displacement amount increases. By switching the water flow state of each communication passage 57, the water discharge patterns from the plurality of water discharge portions 31 are switched in three stages.

In the first-stage water discharge pattern, water is discharged from each water discharge port 41 of the sub water discharge unit 31S. In the second-stage water discharge pattern, water is discharged from each of the water discharge ports 41 of the auxiliary water discharge portion 31S and the first water discharge portion 31A. In the third-stage water discharge pattern, water is discharged from the water discharge ports 41 of the sub water discharge unit 31S, the first water discharge unit 31A, and the second water discharge unit 31B. The number of water outlets 41 that discharge water is 6 in the first-stage water discharge pattern, 18 in the second-stage water discharge pattern, and 30 in the third-stage water discharge pattern. Since the water outlet 41 of each water discharger 31 has the same opening diameter φ1, the total opening area [mm ² ] of the water outlet 41 that discharges water is small in the water discharge pattern when the flow rate is small, and the water discharge pattern when the flow rate is large Then, the total opening area becomes large. Here, the opening area of the water outlet 41 refers to a cross-sectional area of the water outlet 41 in a cross section orthogonal to the central axis of the water outlet 41.

According to the water discharge device 10 described above, the water flow state of each communication passage 57 can be switched by the single valve body 70, and a plurality of valve bodies can be used for switching the total opening area of the water discharge port 41 through which water is discharged to three or more stages. 70 becomes unnecessary. Therefore, the manufacturing cost can be reduced while downsizing the entire apparatus by suppressing the number of parts.

Further, the inlet 63 of each communication passage 57 is formed side by side along the displacement direction of the valve body 70, and when the valve body 70 is displaced, the inlet 63 of each communication passage 57 is opened and closed by the valve body 70. Therefore, the water flow state of each communication path 57 can be switched without requiring a complicated mechanism.

[Second Embodiment]
FIG. 4: shows the partial cross section side view of the water discharging apparatus 10 which concerns on 2nd Embodiment. FIG. 5 is a front view showing an appearance of the watering member 30 according to the second embodiment. Hereinafter, the same reference numerals are given to the same elements as those described in the above-described embodiment, and a duplicate description is omitted.

As shown in FIG. 5, the second water discharge portion 31 B of the water spray member 30 has a plurality of water discharge ports 41 arranged in a ring as a unit row, and the plurality of rows of water discharge ports 41 are concentrically spaced in the radial direction. Arranged. A total of twelve spouts 41 are formed in the first spout unit 31A, a total of twenty-four spouts 41 are formed in the second spout unit 31B, and a total of six spouts 41 are formed in the sub-spout unit 31S. It is formed. The water discharge port 41 of each water discharge part 31 is formed in the same opening diameter (phi) 1 [mm].

As shown in FIG. 4, a plurality of through holes 77 communicating with the outside and the inside are formed in the outer peripheral portion of the valve body 70. Each through hole 77 is formed at the same height position in the axial direction of the valve body 70. When the valve body 70 is displaced, each communication passage 57 is communicated with the upstream water passage 25 through each through hole 77 and the water conduit 71. The opening dimension in the displacement direction (longitudinal direction Y) of each through hole 77 is formed to be smaller than the thickness dimension of the lateral wall portion 53 of each partition wall 50. Thereby, when the valve body 70 is displaced, only one of the communication passages 57 is communicated with the upstream water passage 25 through the through hole 77.

The second stopper 79 protrudes from the outer periphery of the valve body 70 at a position near the end opposite to the water spray member 30. When the valve body 70 is displaced in the vertical direction Y from the initial position, displacement exceeding the restriction position where the lateral wall portion 53 of the first partition wall 50A and the second stopper 79 are engaged is restricted.

The operation of the water discharge device 10 according to the present embodiment will be described. Hereinafter, the difference from the operation described in the above embodiment will be mainly described.

As shown in FIG. 6A, when water is supplied to the water passage 25 when the valve body 70 is in the initial position, the water is passed from the water outlets 41 of the auxiliary water discharger 31 S through the water outlet 39 of the water sprinkling member 30. Water is spit out.

As shown in FIG. 6B, the valve body 70 is displaced from the initial position, and the displacement direction (vertical direction Y) between the inlet 63 of the first communication passage 57 A and the through hole 77 of the valve body 70. If they match, the inlet 63 of the first communication passage 57A is opened. Water is passed from the water passage 25 to the first communication passage 57A on the downstream side through the water conduit 71, and water is discharged from each water outlet 41 of the first water discharge portion 31A.

As shown in FIG. 6C, when the displacement amount of the valve body 70 is further increased and the positions of the inflow port 63 of the second communication passage 57B and the through hole 77 of the valve body 70 in the displacement direction match, The inlet 63 of the two communication passages 57B is opened. Water is passed from the water passage 25 to the second communication passage 57B on the downstream side through the water conduit 71, and water is discharged from each water outlet 41 of the second water discharger 31B. At this time, the inflow port 63 of the first communication passage 57A is closed, and the discharge of water from each of the water discharge ports 41 of the first water discharge unit 31A is stopped.

Thus, the valve body 70 individually switches the communication passage 57 through which water flows according to the amount of displacement. In the first-stage water discharge pattern, water is discharged from each water discharge port 41 of the sub water discharge unit 31S. In the second-stage water discharge pattern, water is discharged from each of the water discharge ports 41 of the auxiliary water discharge portion 31S and the first water discharge portion 31A. In the third-stage water discharge pattern, water is discharged from each of the water discharge ports 41 of the auxiliary water discharge unit 31S and the second water discharge unit 31B. The number of water outlets 41 that discharge water is 6 in the first-stage water discharge pattern, 18 in the second-stage water discharge pattern, and 30 in the third-stage water discharge pattern. In this way, the total opening area of the water discharge port 41 that discharges water may be increased or decreased by individually switching the presence or absence of water flow in each communication passage 57.

[Third Embodiment]
FIG. 7 is a front view showing an appearance of the watering member 30 of the water discharge device 10 according to the third embodiment. As for the 2nd water discharging part 31B of the water sprinkling member 30, the water discharge port 41 of 1 row is arranged for the some water discharge port 41 arrange | positioned circularly as a unit row | line | column. The water outlet 41 of the second water discharger 31B is formed to have a diameter φ2 [mm] that is twice the diameter φ1 of the water outlet 41 of the first water discharger 31A and the sub water discharger 31S. In this case, in the case of the third-stage water discharge pattern in FIG. 6C, the total opening area of the water discharge ports 41 that discharge water is the same as that in the second embodiment. As described above, in changing the total opening area of the water discharge ports 41, the diameter may be changed instead of the number of the water discharge ports 41 of each water discharge portion 31.

[Fourth Embodiment]
FIG. 8 shows a partial cross-sectional side view of the water discharge device 10 according to the fourth embodiment. In the first embodiment, the first partition wall 50A to the fifth partition wall 50E are provided as the partition walls 50. A first communication path 57A is formed between the first partition 50A and the second partition 50B. A second communication path 57B is formed between the second partition wall 50B and the third partition wall 50C. A third communication path 57C is formed between the third partition wall 50C and the fourth partition wall 50D. A fourth communication path 57D is formed between the fourth partition wall 50D and the fifth partition wall 50E.

The water sprinkling member 30 includes a third water discharger 31C and a fourth water discharger 31D in addition to the first water discharger 31A, the second water discharger 31B, and the water discharger 37. The third water discharger 31C is an annular part provided on the inner peripheral side of the second water discharger 31B. The fourth water discharger 31D is an annular part provided on the inner peripheral side of the third water discharger 31C. In this figure, ranges surrounded by two-dot chain lines S3 and S4 are the third water discharger 31C and the fourth water discharger 31D, respectively. Each water discharge portion 31 is formed with a plurality of water discharge ports 41 arranged in an annular shape at equal angular intervals in the circumferential direction.

In the water discharge device 10 described above, when the valve body 70 is displaced, the inlet 63 of each communication path 57 is opened and closed by the valve body 70, and the communication with respect to the first communication path 57A to the fourth communication path 57D is performed according to the amount of displacement. The water state is switched. By switching the water flow state of each communication passage 57, the water discharge patterns from the plurality of water discharge portions 31 are switched in five stages. Thus, since the number of valve bodies 70 does not increase in increasing the number of communication passages 57, the entire apparatus can be made relatively small even if the number of communication passages 57 is increased.

[Fifth Embodiment]
FIG. 9 is a front view showing the water discharge device 10 according to the fifth embodiment. The head portion 23 of the water discharging member 20 is formed in a cylindrical shape extending linearly in the lateral direction X, and the tip side thereof is closed.

The water sprinkling member 30 is formed in a linear flat plate shape extending in the lateral direction X. The water sprinkling member 30 has an auxiliary water discharger 31S, a first water discharger 31A, a second water discharger 31B, and a third water discharger 31C in order from the distal end side to the proximal end side of the head portion 23. Each water discharger 31 is a rectangular plate-like member that is attached to the water sprinkling member 30 at intervals in the lateral direction X. A plurality of water discharge ports 41 are formed in each water discharge portion 31.

FIG. 10 shows a partial cross-sectional side view of the water discharge device 10. This figure shows a state in which the valve body 70 is in the initial position. A plurality of communication passages 57 are formed inside the water sprinkling member 30 so as to communicate with any one of the first water discharge portion 31A to the third water discharge portion 31C. A first communication passage 57A that communicates with each of the water discharge ports 41 is formed inside the first water discharge portion 31A. Inside the second water discharger 31B, second communication passages 57B communicating with the respective water discharge ports 41 are formed. A third communication passage 57 C that communicates with each water discharge port 41 is formed inside the third water discharge portion 31 C.

A partition wall 50 is disposed inside the head portion 23, and the inside thereof is partitioned into a part of the water passage 25 and the storage chamber 59. The water passage 25 is provided so as to extend in the lateral direction X from the inside of the grip portion 21 to the distal end side of the head portion 23. The storage chamber 59 is provided so as to extend linearly in the horizontal direction X inside the head portion 23, one side in the horizontal direction X communicates with the water passage 25, and the bottom is provided in the other side in the horizontal direction. A valve body 70 is disposed inside the storage chamber 59.

The valve body 70 is constituted by a bottomed cylindrical rod. The valve body 70 is disposed with one bottom (left side in the figure) in the axial direction facing the bottom of the storage chamber 59. The valve body 70 is inserted into the storage chamber 59 so as to be slidable in the lateral direction X. The bottom of the valve body 70 does not have the auxiliary water discharger 31S as in the first embodiment.

The urging member 80 is interposed between the bottom wall surface of the storage chamber 59 and the bottom of the valve body 70. The biasing member 80 biases the valve body 70 toward one side (right side in the drawing) of the valve body 70. This urging direction is a direction approaching the water passage 25. The valve body 70 is held at an initial position where the step portion 65 formed in the partition wall 50 and the first stopper 73 are engaged by the urging force of the urging member 80. When the valve body 70 is held at the initial position, the inlet 63 of the first communication passage 57 A is closed by the outer surface 75 of the valve body 70. The storage chamber 59 between the inlet 63 of the second communication path 57B and the third communication path 57C and the water passage 25 is blocked by the valve body 70. Thereby, the water flow path 25 and each communicating path 57 are separated via the valve body 70.

The inflow port 63 of each communication passage 57 opens to a storage chamber 59 that is a space in which the valve body 70 can move, and is provided side by side along the displacement direction (lateral direction X) of the valve body 70.

Next, the operation of the water discharge device 10 according to this embodiment will be described. FIG. 11 is a diagram illustrating the flow of water when water is supplied to the water passage 25. The direction of water flow is indicated by arrow P.

As shown in FIG. 11A, when water is supplied to the water passage 25 when the valve body 70 is in the initial position, the water passage 25 passes through the water outlets 41 of the auxiliary water discharger 31S of the water spray member 30. Water is discharged and water is constantly discharged from each outlet 41.

Further, when water is supplied to the water passage 25, the water pressure acts on the opening end surface and the inner bottom surface of the valve body 70, and the valve body 70 is linearly displaced in the lateral direction X according to the water pressure. As shown in FIG. 11B, when the displacement amount of the valve body 70 increases, the inlet 63 of the first communication passage 57A is opened, and water is passed from the water passage 25 to the first communication passage 57A. When water is passed through the first communication passage 57A, water is discharged from each water outlet 41 of the first water discharger 31A.

Further, when the displacement amount of the valve body 70 is further increased, the inlet 63 of the second communication path 57B and the inlet 63 of the third communication path 57C are sequentially opened as shown in FIG. The water is passed through the communication passages 57 from each other. When water is passed through each communication passage 57, water is discharged from the water discharge ports 41 of the second water discharge portion 31B and the third water discharge portion 31C corresponding to each communication passage 57.

The water discharge pattern from each water discharge part 31 is switched in four steps by switching the water flow state of each communication passage 57. In each water discharge pattern, the water discharge portion 31 from which water is discharged increases in the order of the sub water discharge portion 31S, the first water discharge portion 31A, the second water discharge portion 31B, and the third water discharge portion 31C as the number of steps increases. The water discharge range from each water discharger 31 increases or decreases linearly along the displacement direction (lateral direction X) of the valve body 70 according to the displacement amount of the valve body 70.

In addition, a vent hole 43 is formed in the water spray member 30 of the water discharge member 20. As shown in FIGS. 11 (a) and 11 (c), the vent hole 43 is located when the valve body 70 is in the initial position and when the valve body 70 opens the inflow ports 63 of all the communication passages 57A to 57C (hereinafter, referred to as the valve body 70). In this case, the bottom side space of the storage chamber 59 and the external space are communicated with each other. When the valve body 70 is displaced between the initial position and the fully opened position, the inside of the accommodation chamber 59 is maintained at atmospheric pressure by the vent hole 43 regardless of the amount of displacement. Therefore, when the valve body 70 is displaced, the space in the accommodation chamber 59 does not become a high pressure, and the displacement resistance of the valve body 70 can be suppressed.

According to the above water discharge device 10, the same operation effect as water discharge device 10 concerning a 1st embodiment can be acquired. Moreover, according to the change of the water pressure in the water passage 25, the water discharge range from each water discharge part 31 of the water discharge member 20 increases / decreases along the horizontal direction X, and the user of the water discharge apparatus 10 is easy visually by the water discharge range. Can be confirmed. Therefore, the user can roughly grasp the current flow rate, and the water-saving consciousness can be improved by using the water discharge device 10 so that the amount of water used does not become excessively large. In addition, the water discharge range can be adjusted according to the user's purpose of use and preferences, and convenience for the user is improved.

[Sixth Embodiment]
FIG. 12 is a front view showing an appearance of the water discharge device 10 of the sixth embodiment. The head portion 23 of the water discharging member 20 is formed in a cylindrical shape extending in a curved shape so as to be substantially parallel to a surface parallel to the lateral direction X, and the tip side thereof is closed.

The water sprinkling member 30 is formed in an arc-shaped flat plate extending in the direction Q in which the head portion 23 extends. The water sprinkling member 30 has a sub-water discharge part 31S, a first water discharge part 31A, a second water discharge part 31B, and a third water discharge part 31C in order from the base end side to the tip end side of the head part 23. Each water discharger 31 is a circular plate-like member that is attached to the water sprinkling member 30 at intervals. A plurality of water discharge ports 41 are formed in each water discharge portion 31. A first communication path 57A to a third communication path 57C (not shown) are formed inside the water discharge portions 31A to 31C.

FIG. 13 is a front sectional view of the water discharge device 10. In this figure, ranges in which the first communication path 57A to the third communication path 57C are formed are indicated by two-dot chain lines R1 to R3. Each communication path 57 and the corresponding water discharger 31 are provided on the front side of the drawing with respect to the illustrated position. The water passage 25 is provided on the proximal end side of the head portion 23 from the inside of the grip portion 21. The accommodation chamber 59 is provided so as to extend in the direction Q in a curved shape inside the head portion 23.

When water is supplied to the water passage 25, the valve body 70 is displaced in a curve shape in the direction Q by the water pressure of the water. Due to the displacement of the valve body 70, the first communication passage 57A to the third communication passage 57C are sequentially opened, and water is passed from the water passage 25 to each communication passage 57. When water is passed through each communication passage 57, water is discharged from the water discharge ports 41 of the water discharge portions 31A to 31C corresponding to the communication passages 57. The water discharge range from each water discharge portion 31 increases or decreases in a curved shape along the displacement direction (direction Q) of the valve body 70 according to the displacement amount of the valve body 70.

According to the above water discharge device 10, the same operation effect as a 1st embodiment and a 5th embodiment can be acquired.

[Seventh Embodiment]
FIG. 14 is a front view showing an appearance of the water discharge device 10 of the seventh embodiment. The head part 23 of the water discharging member 20 is formed in a semicircular shape, and the inside thereof is formed hollow.

The water sprinkling member 30 is formed in a semicircular flat plate shape. The water sprinkling member 30 has a sub-water discharge part 31S, a first water discharge part 31A, and a second water discharge part 31B in order from the center part of the head part 23 to the outer peripheral part. Each water discharger 31 is a fan-like plate-like member extending along the circumferential direction of the water sprinkling member 30, and each water discharger 31 is attached at an interval in the radial direction. A plurality of water discharge ports 41 are formed in each water discharge portion 31.

FIG. 15 is a cross-sectional view taken along line AA in FIG. A plurality of partition walls 50 are arranged inside the head portion 23, and the inside thereof is partitioned into a part of the water passage 25, the first communication path 57 A, and the second communication path 57 B. The water passage 25 is provided so as to extend from the inside of the grip portion 21 to the central portion of the head portion 23. The water passage 25 communicates with the water discharge port 41 of the sub water discharge unit 31S on the downstream side. The first communication passage 57A is provided with a first water discharge portion 31A on the downstream side thereof, and communicates with the water discharge port 41 of the first water discharge portion 31A. The second communication passage 57B is provided with a second water discharge portion 31B on the downstream side thereof, and communicates with the water discharge port 41 of the second water discharge portion 31B. A space 61 in which the valve body 70 can move is provided between the water passage 25 and each communication passage 57.

When water is supplied to the water passage 25, the valve body 70 is linearly displaced in the vertical direction Y by the water pressure. Due to the displacement of the valve body 70, the first communication passage 57 A and the second communication passage 57 B are sequentially opened, and water is passed from the water passage 25 to each communication passage 57. When water is passed through each communication passage 57, water is discharged from the water discharge ports 41 of each water discharge portion 31 corresponding to each communication passage 57. The water discharge range from each water discharge portion 31 increases or decreases in the radial direction from the central portion toward the outer peripheral portion according to the amount of displacement of the valve body 70.

According to the above water discharging apparatus 10, the same effect as the water discharging apparatus 10 which concerns on 1st Embodiment or 5th Embodiment can be acquired.

[Eighth Embodiment]
FIG. 16: shows the partial cross section side view of the water discharging apparatus 10 of 8th Embodiment. Compared with the water discharging apparatus 10 which concerns on 1st Embodiment, the water discharging apparatus 10 which concerns on this embodiment is further provided with the measurement part 90 and the valve drive mechanism 100. FIG. The measuring unit 90 is installed in the gripping unit 21 of the water discharge member 20. The measuring unit 90 is a flow meter such as an impeller flow meter, and detects the flow rate of water supplied to the water passage 25.

The valve drive mechanism 100 is a feed screw mechanism. The valve drive mechanism 100 includes a drive motor 101, a screw shaft 103, and a moving nut 105. The drive motor 101 is attached to the inner wall surface of the head portion 23. The moving nut 105 is screwed onto the screw shaft 103 and attached to the valve body 70. When the screw shaft 103 is rotated by driving the drive motor 101, the moving nut 105 is moved by the rotation, and the valve body 70 is displaced in the vertical direction Y.

FIG. 17 is a functional block diagram showing a control system of the water discharge device 10. The water discharge device 10 includes a control unit 110 in addition to the valve body 70, the measurement unit 90, and the valve drive mechanism 100.

The measuring unit 90 detects the flow rate of the water supplied to the water passage 25 and outputs the detected value to the control unit 110. The control unit 110 is configured by a microcomputer. The controller 110 is mounted on the water discharge member 20. The control unit 110 outputs a control signal to the drive motor 101 based on the output signal from the measurement unit 90, and displaces the valve body 70 using the valve drive mechanism 100 by driving the drive motor 101, and controls the amount of displacement. .

The control unit 110 controls the amount of displacement of the valve body 70 so that the inlet 63 of the first communication passage 57A is opened when the flow rate of water in the water passage 25 reaches a predetermined flow rate Q1. Further, the controller 110 displaces the valve element 70 so that the inlet 63 of the second communication passage 57B opens when the flow rate of water in the water passage 25 reaches a predetermined flow rate Q2 larger than the flow rate Q1. Control the amount. As described above, the control unit 110 controls the amount of displacement of the valve body 70 according to the increase or decrease of the flow rate in the water passage 25 to open or close each communication passage 57.

Even with the above water discharge device 10, the same effect as the water discharge device 10 according to the first embodiment can be obtained. In the present embodiment, the feed screw mechanism is described as the valve drive mechanism 100. However, the present invention is not limited to this, and a rack and pinion or the like may be used. Moreover, although the measurement part 90 demonstrated the flowmeter which detects the flow volume of the water supplied to the water flow path 25, the water pressure meter which detects the water pressure of the water of the water flow path 25 may be sufficient.

[Ninth Embodiment]
FIG. 18: shows the partial cross section side view of the water discharging apparatus 10 which concerns on 9th Embodiment. The water discharge device 10 differs from the water discharge device 10 according to the fifth embodiment in that the water discharge port 41 and the communication passage 57 are integrally formed as a part of a single hole.

The first water discharger 31A to the third water discharger 31C and the auxiliary water discharger 31S of the water spray member 30 are provided integrally with the water spray member 30. One water discharge port 41 is formed in each of the first water discharge portion 31A to the third water discharge portion 31C. The water sprinkling member 30 is formed with a plurality of communication passages 57 communicating with the water discharge ports 41 of the water discharge portions 31A to 31C. The first water discharge portion 31A is formed with a first communication passage 57A communicating with the water discharge port 41. Similarly, the second water discharge portion 31B and the third water discharge portion 31C are also formed with a second communication passage 57A and a third communication passage 57C that communicate with the water discharge ports 41, respectively. The communication path 57 is formed inside a hole formed in the water sprinkling member 30, and the water discharge port 41 is formed as an opening edge of the hole. Also with this water discharging apparatus 10, the same effect as 1st Embodiment and 5th Embodiment can be acquired.

Next, a design method for adjusting the flow velocity when water is supplied to the water passage 25 of the water discharge member 20 using the water discharge device 10 described above will be described.

FIG. 19 is a graph showing the relationship between the flow rate Q [mm ³ / sec] and the flow velocity V [mm / sec] when water is supplied to the water passage 25 of the water discharge member 20. Hereinafter, the fluctuation characteristic of the flow velocity V with respect to the change in the flow rate Q is referred to as a flow velocity characteristic.

The water discharge device 10 according to the first embodiment is configured such that the water discharge pattern is switched at predetermined flow rates Q1 and Q2. For this switching, the position of the valve body 70, the position of the inlet 63 of each communication passage 57, and the urging force of the urging member 80 are adjusted.

Here, the total opening areas of the water discharge ports 41 of the sub-water discharger 31S, the first water discharger 31A, and the second water discharger 31B are A1, A2, and A3. In the first-stage water discharge pattern, the sub-water discharge part 31S, in the second-stage water discharge pattern, the sub-water discharge part 31S and the first water discharge part 31A, and in the third-stage water discharge pattern, the sub-water discharge part 31S and the first water discharge part 31A. Water is discharged from the second water discharger 31B. Therefore, the first to third water discharge patterns have flow velocity characteristics that satisfy the following equations (11) to (13). In the figure, the flow velocity characteristics corresponding to the respective equations are indicated by two-dot chain lines L1 to L3.
V = Q / A1 (11)
V = Q / (A1 + A2) (12)
V = Q / (A1 + A2 + A3) (13)

Here, when the flow rate is zero or more and less than Q1, the first-stage water discharge pattern is obtained, when Q1 is less than Q2, the second-stage water discharge pattern is obtained, and when the flow rate is Q2 or more, the third-stage water discharge pattern is obtained. Therefore, the water discharge device 10 has a flow velocity characteristic as indicated by a solid line L0 in which the two-dot chain lines L1 to L3 are combined.

Here, in the first-stage water discharge pattern which is the foremost stage, the total opening area A1 of the water discharge port 41 in the sub-water discharge portion 31S is determined so that the flow velocity range that can be taken is equal to or less than a predetermined upper limit value Vmax. . Moreover, in the 3rd stage water discharge pattern which is the last stage, in the sub water discharge part 31S, the 1st water discharge part 31A, and the 2nd water discharge part 31B so that the flow velocity range which can be taken becomes more than the predetermined lower limit Vmin. A total opening area A1 + A2 + A3 of the water discharge port 41 is determined. Further, in the second stage water discharge pattern that is an intermediate stage, the flow velocity range that can be taken is the lower limit value Vmin or more and the upper limit value Vmax or less, so that the water discharge ports 41 in the sub-water discharge part 31S and the first water discharge part 31A. A total opening area A1 + A2 is determined.

This can reduce the deviation of the flow velocity range in each water discharge pattern. Therefore, in a wide flow rate range, a decrease in the hit state due to the low flow rate and the occurrence of water splash due to the high flow rate are suppressed, and a stable feeling of use can be obtained.

Note that a conventional water discharge member, that is, a water discharge member in which the total opening area A0 [mm ² ] of the water discharge port 41 is constant regardless of the flow rate or the water pressure has a flow rate characteristic that satisfies the following formula (10). In this figure, this flow velocity characteristic is indicated by a one-dot chain line. Thus, with a conventional water discharge member, it is difficult to achieve a high flow rate at a low flow rate, and it is difficult to achieve a low flow rate at a high flow rate.
V = Q / A0 (10)

FIG. 20 shows a flow velocity characteristic in the water discharge device 10 according to the first modification. The water discharge device 10 is configured such that the water discharge pattern is switched at predetermined flow rates Q1 to Q4. The water discharge pattern is switched to 5 levels. A total opening area of the water discharge port 41 through which water is discharged in each water discharge pattern is Aa to Ae. In 1st Embodiment, although the total opening area in each water discharge pattern was adjusted by increase / decrease in the number of the water discharge ports 41, you may adjust by increase / decrease in the opening diameter.

The total opening areas Aa and Ae are determined so that the range of flow velocity that can be taken by the water discharge pattern at each stage is V1max or less at the first stage and V5 min or more at the fifth stage. In each of the second to fourth stages, the total opening areas Ab to Ad are determined so as to be V2min or more and V2max or less, V3min or more and V3max or less, and V4min or more and V4max or less.

Here, in the water discharge pattern at the middle stage of the second or higher stage, the maximum value of the water discharge pattern at each stage is lower than the maximum value of the water discharge pattern at the previous stage. For example, the maximum value V2max of the second stage water discharge pattern is lower than the maximum value V1max of the first stage water discharge pattern. Further, the maximum value V3max of the third-stage water discharge pattern is lower than the maximum value V2max of the second-stage water discharge pattern. Further, in the water discharge patterns of the third and higher stages, the minimum value is lower than the minimum value of the water discharge pattern in the previous stage. For example, the minimum value V4min of the fourth-stage water discharge pattern is lower than the minimum value V3min of the third-stage water discharge pattern. Further, the minimum value V5min of the fifth stage water discharge pattern which is the last stage is lower than the minimum value V4min of the fourth stage water discharge pattern. The total opening areas Aa to Ae are determined so as to be in this flow velocity range.

According to the water discharge device 10 described above, it is possible to achieve flow velocity characteristics such that the upper limit value and the lower limit value of the flow velocity range in each water discharge pattern gradually decrease. Thereby, for example, when the flow rate is small, it is easy to make the flow rate large, and it is easy to make the contact condition of the shower water relatively strong, and a massage function can be added. In addition, when the flow rate is large, it is easy to make the flow rate small, and while suppressing the occurrence of water splash, the total flow rate corresponding to the user is increased, and it is easy to give a feeling of use where shower water is gathered at the location where shower water is applied. Become.

FIG. 21 shows flow velocity characteristics in the water discharge device 10 according to the second modification. In the water discharge device 10, in the water discharge patterns of the second and higher stages, the minimum value of the water discharge pattern in each stage is higher than the maximum value of the water discharge pattern in the previous stage. For example, in the second stage water discharge pattern, the minimum value V2min is higher than the maximum value V1max of the first stage water discharge pattern. In the fifth stage water discharge pattern, the minimum value V5min is higher than the maximum value V4max of the fourth stage water discharge pattern. The total opening areas A1 to A5 are determined so as to be in this flow velocity range.

According to the water discharge device 10 described above, it is possible to achieve flow velocity characteristics such that the upper limit value and the lower limit value of the flow velocity range in each water discharge pattern gradually increase. Thereby, for example, when the flow rate is small, it is easy to make the flow velocity small, and when washing away detergent or the like adhering to the wall surface of a bathroom or the like, it is easy to wash away water while suppressing splashing. In addition, when the flow rate is large, it is easy to make the flow rate large, and it is easy to scrape off dirt stuck to the wall surface of a bathroom or the like with shower water.

As mentioned above, according to the water discharging apparatus 10 which concerns on this embodiment, the flow rate of the shower water according to flow volume can be adjusted arbitrarily by adjustment of the number of each communicating path 57, the number of the water discharge ports 41, and a magnitude | size. .

Although the present invention has been described based on the embodiments, the embodiments only show the principle and application of the present invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

In the above-described embodiment, the water discharge member 20 has been described using the shower head connected to the shower hose 29 as an example, but may be a spout fixed to a wash counter or the like. It is sufficient that at least two communication passages 57 are formed that communicate with one of the water discharge ports 41 of the plurality of water discharge units 31. Although the example in which the valve body 70 is configured by a bottomed cylindrical rod body having a hollow cross section has been described, the valve body 70 may be configured by a solid cross section rod body. The urging member 80 only needs to be able to urge the valve body 70 toward the initial position, and may be composed of various spring members such as a constant load spring in addition to the coil spring. You may comprise by what combined.

DESCRIPTION OF SYMBOLS 10 ... Water discharging apparatus, 20 ... Water discharging member, 25 ... Water flow path, 31 ... Water discharging part, 41 ... Water discharging port, 57 ... Communication path, 61 ... Space, 63 ... Inlet, 70 ... Valve body.

Claims

A water discharge member having a water passage formed therein;
A plurality of water discharge portions formed with water outlets for discharging water supplied to the water passage;
A single valve body that is displaced according to the water pressure or flow rate of water supplied to the water passage,
In the inside of the water discharge member, a plurality of communication passages that communicate with one of the water discharge ports of the plurality of water discharge portions are formed,
The water discharging device is configured to switch the presence or absence of water flow to each of the plurality of communication passages by displacement of the valve body.
The plurality of communication passages are formed such that respective inflow ports open toward a space in which the valve body can move, and the inflow ports are arranged along the displacement direction of the valve body. Item 10. The water discharge device according to Item 1.
3. The water discharge device according to claim 1, wherein a water discharge range from the plurality of water discharge units is configured to increase or decrease in one direction in accordance with a displacement amount of the valve body.
By switching the presence or absence of water flow to the plurality of communication passages, the water discharge pattern from the plurality of water discharge portions can be switched to three or more stages,
Regarding the flow velocity range that each of the plurality of water discharge patterns can take, the first stage water discharge pattern is not more than a predetermined upper limit value, the last stage water discharge pattern is not less than a predetermined lower limit value, and the middle stage water discharge pattern has the lower limit value. The water discharge device according to any one of claims 1 to 3, wherein an opening area of the water discharge port is determined so as to be not less than a value and not more than the upper limit value.
By switching the presence or absence of water flow to the plurality of communication passages, the water discharge pattern from the plurality of water discharge portions can be switched to three or more stages,
Regarding the flow velocity range that each of the plurality of water discharge patterns can take, in the water discharge pattern at the middle stage of the second or higher stage, the maximum value thereof is lower than the maximum value of the water discharge pattern at the previous stage, and the water discharge at the third stage or higher. The water discharge according to any one of claims 1 to 3, wherein an opening area of the water discharge port is determined so that the minimum value of the pattern is lower than the minimum value of the water discharge pattern in the previous stage. apparatus.
By switching the presence or absence of water flow to the plurality of communication passages, the water discharge pattern from the plurality of water discharge portions can be switched to three or more stages,
Regarding the flow velocity range that each of the plurality of water discharge patterns can take, the opening area of the water discharge port is determined so that the minimum value thereof is higher than the maximum value of the water discharge pattern of the previous stage in the second or higher water discharge patterns. The water discharging device according to any one of claims 1 to 3, wherein the water discharging device is provided.