shower head

Abstract

The present invention provides a shower head that can switch between multiple water patterns, including shower spray and mist spray, and in which the arrangement of the nozzles for each of the multiple water patterns is not limited. [Solution] A shower head 100 that can switch between multiple water discharge patterns comprises a switching plate 122 for switching the water discharge patterns, one or more switching cases 126 having water outlets, and a screen 130 having water outlets, wherein the water outlets in the switching cases 126 and the screen 130 each discharge water in different patterns, and the water discharge surface of the screen 130 is divided into a first region A1 and a second region A2 based on the distance from the center C, and at least two water outlets with different water discharge patterns are arranged in both the first region A1 and the second region A2.

Description

【Technical Field】 【0001】 The present invention relates to a shower head capable of switching between a plurality of water forms including at least shower water discharge and mist water discharge. 【Background Art】 【0002】 As a shower head capable of switching between a plurality of water forms including at least shower water discharge and mist water discharge, for example, there is a technique disclosed in Japanese Patent Application Laid-Open No. 2021-052921 (Patent Document 1). As shown in FIG. 5, this shower head has a structure in which four mist discharge portions 30 are arranged at the center of the water discharge surface, and shower discharge portions 20 are arranged around the mist discharge portions 30. 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2021-052921 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 However, in this prior art, since the arrangements of the mist discharge portion 30 and the shower discharge portion 20 are limited, it is impossible to uniformly discharge water from the mist discharge portion 30 and the shower discharge portion 20 over the entire water discharge surface. For example, in this prior art, water was not discharged from the center by the shower discharge portion 20. Further, in this prior art, since the arrangement of the mist discharge portion 30 is limited, it is impossible to sufficiently secure the number of mist discharge portions 30. Since the amount of water discharged from the mist discharge portion 30 decreases as the water particles become finer, if the number of mist discharge portions 30 cannot be sufficiently secured, there is a risk that water will not be heated by the water heater. 【0005】 The present invention is proposed in consideration of these problems, and aims to provide a shower head that can switch between multiple water patterns, including at least shower spray and mist spray, in which the arrangement of the nozzles for spraying the multiple water patterns is not limited. [Means for solving the problem] 【0006】 To achieve the above objective, the present invention has the following features. 【0007】 (Feature Configuration 1) A shower head that can switch between multiple water discharge patterns, A switch plate for changing the water discharge pattern. One or more switching cases having a water outlet, and Equipped with a screen having a water outlet, The switching case and the water outlet in the screen each produce water in different water discharge patterns. The water discharge surface of the screen is divided into a first region and a second region based on the distance from the center, and at least two water discharge outlets with different water discharge patterns are arranged in both the first region and the second region. It's at a single point. 【0008】 (Effect 1) This configuration allows for unrestricted placement of the two nozzles with different water discharge patterns, ensuring even distribution of water across the entire surface from both nozzles. 【0009】 (Feature Composition 2) The shower head according to the present invention is: The switching plate, the switching case, and the screen are arranged in the direction of water discharge to form a hierarchical flow path. That's fine. 【0010】 (Effect 2) By adopting such a configuration, the arrangement of the two water outlets with different water discharge patterns is not limited, so water can be discharged evenly from the entire water discharge surface from the two water outlets with different water discharge patterns. 【0011】 (Characteristic configuration 3) As the shower head according to the present invention, the water flow in each layer is not mixed with each other, and it may be. 【0012】 (Effect 3) By adopting such a configuration, the arrangement of the two water outlets with different water discharge patterns is not limited, so water can be discharged evenly from the entire water discharge surface from the two water outlets with different water discharge patterns. 【0013】 (Characteristic configuration 4) As the shower head according to the present invention, the water outlet includes at least a shower water outlet and a mist water outlet, and it may be. 【0014】 (Effect 4) By adopting such a configuration, the arrangement of the shower water outlet and the mist water outlet is not limited, so water can be discharged evenly from the entire water discharge surface from the shower water outlet and the mist water outlet. In addition, since the arrangement of the mist water outlet is not limited, the mist water outlet can be arranged so that the mist discharged from the mist water outlet does not overlap. 【0015】 (Characteristic configuration 5) As the shower head according to the present invention, it includes a switching valve that contacts the switching plate, and by rotating the switching plate, the switching of the water discharge pattern is executed, and it may be. 【0016】 (Effect 5) By adopting such a configuration, it is possible to easily switch the water discharge mode. 【0017】 (Feature Configuration 6) As the shower head according to the present invention, The switching plate, the switching case, and the screen are integrated by a fixing ring to form a water discharge unit, By rotating the water discharge unit, the switching of the water discharge mode is executed. It may be. 【0018】 (Effect 6) By adopting such a configuration, the switching structure of the water form switching can be simplified, and the switching of the water discharge mode can be performed by rotating the screen. 【0019】 (Feature Configuration 7) As the shower head according to the present invention, The switching case has a mist water flow port, Each of the mist water flow ports has a cylindrical portion for mist protruding toward the screen side, The screen has a swirling flow generation mechanism accommodating portion for accommodating a swirling flow generation mechanism enabling mist water discharge, and a cylindrical portion for mist accommodating portion for accommodating the cylindrical portion for mist around the swirling flow generation mechanism accommodating portion. The cylindrical portion for mist and the cylindrical portion for mist accommodating portion are sealed. It may be. 【0020】 (Effect 7) By adopting such a configuration, it is possible to individually seal the mist water discharge ports where the water discharge ports become large due to the swirling flow generation mechanism or the like, so that the sealing property of the mist water discharge ports can be ensured. In addition, since sealing is performed by the cylindrical portion, the sealing property can be further ensured against the pressure in the water discharge direction. Thereby, the arrangement of the mist water discharge ports can be selected more freely. 【0021】 (Feature Configuration 8) As the shower head according to the present invention, The switching plate has a first cylindrical portion having a circumferential surface, The switching case has a second cylindrical portion opposite to the first cylindrical portion, The screen has a third cylindrical portion opposite to the second cylindrical portion, The first cylindrical portion and the second cylindrical portion, and the second cylindrical portion and the third cylindrical portion are sealed by an elastic body. That's fine. 【0022】 (Effect 8) This configuration ensures the sealing performance of the hierarchical flow path formed by the switching plate, switching case, and screen. Furthermore, because sealing is performed by the cylindrical section, the sealing performance can be better guaranteed against pressure in the discharge direction. 【0023】 (Feature configuration 9) The shower head according to the present invention is: The screen has the shower spout, The shower spout has a protruding portion that extends in the direction of the switching case. That's fine. 【0024】 (Effect 9) This configuration prevents residual water from flowing out of the shower outlet immediately after shutting off the water flow. Furthermore, the shower outlet (flow path) can be made longer in the direction of water discharge, thereby enhancing the flow straightening effect. 【0025】 (Feature configuration 10) The shower head according to the present invention is: Of the spaces formed between the switching case and the screen, the space at the screen inlet through which water flows from the switching case to the screen is larger than the other spaces. That's fine. 【0026】 (Effect 10) By adopting this configuration, the space at the inlet to the screen, which is most affected by pressure loss, is widened among the spaces formed between the switching case and the screen. This reduces pressure loss and mitigates the reduction in water discharge volume. 【0027】 (Feature configuration 11) The shower head according to the present invention is: The switching case has ribs protruding in the direction of the screen. That's fine. 【0028】 (Effect 11) This configuration allows the swirling flow generated around the mist cylinder housing to be agitated by the vertical rotational flow generated in the ribs, thereby reducing the possibility of disturbance in the water discharge shape from the shower outlet. 【0029】 (Feature configuration 12) The shower head according to the present invention is: The rib has an R-shaped structure on the side that obstructs the flow of water. That's fine. 【0030】 (Effect 12) This configuration allows for more effective generation of vertical rotational flow, reducing the possibility of disruption in the water flow shape from the showerhead. 【0031】 (Feature configuration 13) The shower head according to the present invention is: It includes a water passage section connected to the aforementioned switching plate, The switching plate has a flange that protrudes in the circumferential direction, The water passage section has a flange receiving section for receiving the flange, The switching plate is connected to the water pipe section by rotating it in one direction after inserting the flange into the flange receiving section. That's fine. 【0032】 (Effect 13) This configuration makes it easier to connect the water pipe section and the switching plate. 【0033】 (Feature configuration 14) The shower head according to the present invention is: The system includes a purified raw water switching case connected to the aforementioned water passage section. The screen has a rotation restricting section, The purified water switching case has a plurality of contact parts that come into contact with the rotation restricting part, The rotation restricting portion comes into contact with the contact portion when rotated by a predetermined amount in one direction and in the other direction, and within that predetermined range, the connection between the switching plate and the water passage portion is not released. That's fine. 【0034】 (Effect 14) With this configuration, if the water passage section is connected to the purified water switching case after the switching plate and the water passage section are connected, the rotation range of the screen is restricted by the rotation restricting part of the purified water switching case, preventing the connection between the switching plate and the water passage section from coming loose. 【0035】 (Feature configuration 15) The shower head assembly method according to the present invention is as follows: A shower head that can switch between multiple water discharge patterns, A switch plate for changing the water discharge pattern. One or more switching cases having a water outlet, A screen having a water outlet, The water passage section connected to the aforementioned switching plate, The system includes a purified raw water switching case connected to the aforementioned water passage section. The switching plate has a flange that protrudes in the circumferential direction, The water passage section has a flange receiving section for receiving the flange, The screen has a rotation restricting section, The purified water switching case has a plurality of contact parts that come into contact with the rotation restricting part, The switching case and the water outlet in the screen each produce water in different water discharge patterns. The water discharge surface of the screen is divided into a first region and a second region based on the distance from the center, and at least two water discharge outlets with different water discharge patterns are arranged in both the first region and the second region. The switching plate is connected to the water pipe section by rotating it in one direction after inserting the flange into the flange receiving section. The rotation restricting portion comes into contact with the contact portion by rotating by a predetermined amount in one direction and in the other direction, and within that predetermined range, the connection between the switching plate and the water passage portion is not released. This is a method for assembling a shower head. The first step is to connect the switching plate and the water passage section. A second step involves connecting the water passage section and the purified water switching case. Those that possess, That's fine. 【0036】 (Effect 15) By using this process, the rotation range of the screen is restricted by the rotation restricting part of the purified water switching case, preventing the connection between the switching plate and the water passage pipe from coming loose. [Brief explanation of the drawing] 【0037】 [Figure 1] Front view of the shower head [Figure 2] Right side view of the shower head [Figure 3] Rear view of the shower head [Figure 4] Exploded view showing the main components of a shower head. [Figure 5] Cross-sectional view of the showerhead at line AA in Figure 1. [Figure 6] Exploded perspective view showing the main components of the water discharge unit. [Figure 7] Exploded perspective view showing the main components of the water discharge unit. [Figure 8] Cross-sectional view of the water discharge unit section in Figure 1 (line AA). [Figure 9]Front view of the top cover [Figure 10] (a) is a right side view of the upper cover, and (b) is a cross-sectional view of the upper cover of (a) along line BB. [Figure 11] (a) is a rear view of the water pipe section, and (b) is a front view of the water pipe section. [Figure 12] Perspective view of the water pipe section [Figure 13] (a) is a rear view of the switching valve, and (b) is a front view of the switching valve. [Figure 14] (a) is a rear view of the switch plate, and (b) is a front view of the switch plate. [Figure 15] (a) is a right side view of the switching plate, and (b) is a cross-sectional view of the water discharge unit section of Figure 1, along line AA. [Figure 16] (a) is a rear view of the switching case, and (b) is a front view of the switching case. [Figure 17] (a) is a right side view of the switching case, and (b) is a cross-sectional view of the water discharge unit section of Figure 1, along line AA. [Figure 18] (a) Rear view of the mist fountain, (b) Front view of the mist fountain, (c) Right side view of the mist fountain. [Figure 19] (a) is a rear view of the screen, and (b) is a front view of the screen. [Figure 20] (a) is a right side view of the screen, and (b) is a cross-sectional view of the water discharge unit section of Figure 1, along line AA. [Figure 21] (a) is a perspective view of the screen, and (b) is a cross-sectional view of the screen in Figure 19(a) along the CC line. [Figure 22] (a) is a rear view of the retaining ring, and (b) is a front view of the retaining ring. [Figure 23] (a) is a right side view of the fixing ring, and (b) is a cross-sectional view of the water discharge unit section of Figure 1, along line AA. [Figure 24] Diagram showing the connection method between the water discharge unit and the water passage pipe. [Figure 25] Exploded perspective view showing the main components of the raw water purification switching mechanism. [Figure 26] (a) is a front view of the button guide, (b) is a right side view of the button guide, and (c) is a bottom view of the button guide. [Figure 27](a) and (b) are diagrams showing the assembly method of the switching valve, and (c) is a bottom view of the switching mechanism. [Figure 28] (a) is a plan view of the purified water switching case, (b) is a bottom view of the purified water switching case, (c) is a front view of the purified water switching case, and (d) is a right side view of the purified water switching case. [Figure 29] Cross-sectional view of the purified water switching mechanism shown in Figure 1 (line AA). [Figure 30] Cross-sectional view of the purified water switching mechanism in Figure 1, line AA, when the button is in the first position. [Figure 31] Cross-sectional view of the purified water switching mechanism in Figure 1, line AA, when the button is in the second position. [Figure 32] Diagram showing the connection method between the purified water switching mechanism and the upper water purification cartridge case (before rotation operation) [Figure 33] Diagram showing the connection method between the purified water switching mechanism and the upper water purification cartridge case (after rotation operation). [Figure 34] Diagram showing the connection method between the water discharge unit and the purified water switching mechanism, etc. [Figure 35] Diagram showing the positional relationship between the screen rotation restriction section and the purified water switching mechanism. [Figure 36] Perspective view of the water-stopping ring of the second embodiment [Figure 37] Front view of the shower head of the third embodiment [Figure 38] Right side view of the shower head of the third embodiment [Figure 39] Rear view of the shower head of the third embodiment [Figure 40] Exploded view showing the main components of the shower head of the third embodiment. [Figure 41] Figure 37 shows a cross-sectional view of the shower head of the third embodiment along line DD. [Figure 42] Exploded perspective view showing the main components of the purified water switching mechanism of the third embodiment. [Figure 43] Exploded perspective view showing the main components of the purified water switching mechanism of the third embodiment. [Figure 44] Rear view of the upper cover of the third embodiment [Figure 45]Figure 37 shows a cross-sectional view of the purified water switching mechanism in the third embodiment, along the DD line. [Figure 46] (a) is a rear view of the screen of the fourth embodiment, and (b) is a perspective view. [Figure 47] (a) is a rear view of the screen having a substantially conical projection according to the fifth embodiment, and (b) is a perspective view. [Figure 48] (a) is a rear view of the fifth embodiment of the screen having a streamlined projection, and (b) is a perspective view. [Figure 49] (a) is a rear view of the screen of the sixth embodiment, and (b) is a perspective view. [Figure 50] (a) is a rear view of the screen of the seventh embodiment, and (b) is a perspective view. [Figure 51] Front view of the switching case of the 8th embodiment [Figure 52] (a) is a perspective view of the switching case of the eighth embodiment, and (b) is an enlarged view of (a). [Figure 53] (a) is a rear view of the eighth embodiment's switching case attached to the screen when transparency is increased, and (b) is an enlarged view of (a). [Figure 54] Rear view of the switching case of the eighth embodiment attached to the screen. [Figure 55] (a) is a cross-sectional view of the switching case attached to the screen in Figure 54 along the EE line, and (b) is an enlarged view of (a). [Modes for carrying out the invention] 【0038】 The embodiments of the present invention will be described below with reference to the drawings. Each embodiment is not independent of the others, and it is not necessary to explain them in detail, as those skilled in the art can combine them as appropriate, and the synergistic effects of such combinations can also be understood. In principle, redundant explanations between embodiments will be omitted. 【0039】 Furthermore, in embodiments of the present invention, each direction is defined as follows: As shown in Figures 1 to 3, the front-to-back direction is the direction of water discharge from the spouts (mist spout 130a, shower spout 130b) in Figure 1, the up-and-down direction is the direction in which the water purification cartridge extends in Figure 1, and the left-to-right direction is the direction perpendicular to the front-to-back and up-and-down directions, as shown in Figure 1 or Figure 3. Also, the view of the shower head 100 from the front, as shown in Figure 1, is defined as the front view. Note that each direction may be redefined in different terms based on the disclosure of the entire application. 【0040】 [First Embodiment] 〔overview〕 Embodiments of the shower head 100 according to the present invention will be described with reference to the drawings. As shown in Figures 1 to 5, this shower head 100 is mainly composed of three structures. The first is a water discharge unit 110 that includes a screen 130 having at least a mist outlet 130a and a shower outlet 130b. The second is a purified raw water switching mechanism 140 that switches the discharge of purified water flowing into the water discharge unit 110. The third component is the water purification cartridge section 160, which houses the water purification cartridge 167 connected to the purified raw water switching mechanism 140. 【0041】 The following describes the specific structure of the water discharge unit 110, the purified raw water switching mechanism 140, and the purified water cartridge unit 160. 【0042】 [Water discharge unit 110] As shown in Figure 6, the water discharge unit 110 mainly consists of an upper cover 111, a water passage pipe 112, a switching valve 114, and a water discharge unit 120. The water discharge unit 120, as shown in Figure 7, mainly consists of a switching plate 122, a switching case 126, a mist compost 129, a screen 130, and a fixing ring 131. 【0043】 The upper cover 111 covers the top of the shower head 100 and is connected to the water passage section 112, as shown in Figure 8. 【0044】 The upper cover 111 is mainly, as shown in Figures 9 and 10, A hole 111f for the water discharge unit, provided above the upper cover 111, which receives the water discharge unit 120. A screw hole 111a is provided within the hole 111f for the water discharge unit section and for fixing the water passage pipe section 112. A button hole 111b is provided below the hole 111f for the water discharge unit, and receives the button 141 of the purified water switching mechanism 140. A gripping portion 111c is provided below the buttonhole 111b and is held by the user. A engaged portion 111e is provided inside the button hole 111b and engages with the engaging portion 142a of the button guide 142. A fitting portion 111d is provided on the inner surface of the rear side of the upper cover 111, which fits with the spring receiving portion 151e of the purified raw water switching case 151 and the positioning projection 166c of the upper purified water cartridge case 166, and restricts their circumferential rotation. It consists of. 【0045】 The water passage section 112 is through which the fluid flowing out from the purified raw water switching mechanism 140 passes. As shown in Figure 8, it is connected to the upper cover 111 and also to the water discharge unit 120 (switching plate 122) via the switching valve 114. 【0046】 The water passage section 112 is mainly, as shown in Figures 11 and 12, A screw hole 112a is provided on the circumference of the disc portion 112f of the water passage portion 112 and is positioned in a location corresponding to the screw hole 111a of the upper cover 111. A water passage pipe 112b is connected to the disc section 112f and through which the fluid flowing out from the purified raw water switching mechanism 140 passes. A switching valve housing section 112e is provided at the center of the front side of the disc section 112f and houses the switching valve 114. A flange receiving portion 112c is provided at the upper and lower ends of the switching valve housing portion 112e and receives the flange 122h of the switching plate 122. A restricting portion 112d is connected to the flange receiving portion 112c and is provided around the switching valve housing portion 112e, restricting the movement of the flange 122h in the front-rear direction. A spring receiving portion 112g is provided within the switching valve housing portion 112e and houses one end of the spring 113. It consists of. 【0047】 The switching valve 114 switches the destination of the fluid passing through the water passage section 112. As shown in Figure 8, it is housed in the switching valve housing section 112e of the water passage section 112 and connected to the water discharge unit 120 (switching plate 122). 【0048】 The switching valve 114, as shown in Figure 13, mainly, A spring projection 114a is provided on the rear side of the switching valve 114 and is connected to a spring 113 that biases the switching valve 114 toward the water discharge unit 120. A valve section 114b is provided on the back side of the spring projection 114a and switches between the first mist water flow port 122a or the first shower water flow port 122b provided on the switching plate 122. An O-ring recess 114g is provided around the valve portion 114b and accommodates an O-ring 115 for watertightly connecting the valve portion 114b to the first mist water flow port 122a or the first shower water flow port 122b. It consists of. 【0049】 Next, the specific structure of the water outlet unit 120 having a mist outlet 130a and a shower outlet 130b will be described. The switching plate 122 is equipped with a first mist water flow port 122a and a first shower water flow port 122b that are connected to multiple flow paths (mist flow path M, shower flow path S). ​​As shown in Figures 6 to 8, the rear side is connected to the water passage section 112 via a switching valve 114, and the front side is connected to the switching case 126. 【0050】 The switching plate 122 is mainly, as shown in Figures 14 and 15, A first mist water flow port 122a is provided in the center of the rear side of the switching plate 122 and connects the flow path formed in the water passage section 112 with the mist flow path M. A first shower water flow port 122b, which has a cylindrical shape extending to the rear side, is provided in the center of the rear side of the switching plate 122 and connects the flow path formed in the water passage section 112 with the shower flow path S. A first connecting projection 122c is provided at the upper end of the switching plate 122 and fits into the first connecting projection recess 126d of the switching case 126, thereby restricting the rotational movement of the switching plate 122 alone. A screw hole 122d is provided in the center of the switching plate 122 and communicates with a screw hole 130d provided in the screen 130. A first cylindrical portion 122g is provided on the outer circumference of the switching plate 122 and extends to the rear side. An O-ring recess 122f is provided on the front side of the first cylindrical portion 122g and houses an O-ring 123 for watertight connection between the switching plate 122 and the switching case 126. A first engaged portion 122e is provided on the rear side of the first cylindrical portion 122g and engages with the first engaging portion 131a provided on the fixing ring 131. A flange 122h is provided around the first mist water flow port 122a and the first shower water flow port 122b, and is received by the flange receiving portion 112c of the water passage pipe portion 112. It consists of. 【0051】 In the first embodiment, the first mist water flow port 122a and the first shower water flow port 122b are provided in three locations each, as shown in Figure 14. However, the number can be adjusted as appropriate, taking into consideration the amount of fluid flowing into the water discharge unit 120, etc. 【0052】 The switching case 126, together with the switching plate 122, forms the mist flow path M. As shown in Figures 7 and 8, its rear side is connected to the switching plate 122, and its front side is connected to the screen 130. 【0053】 The switching case 126 is mainly, as shown in Figures 16 and 17, The switching case 126 is evenly distributed, and the second mist water flow port 126a (corresponding to the "discharge port") through which the fluid flowing in from the first mist water flow port 122a of the switching plate 122 passes, A mist cylindrical part 126g is provided on the front side of the second mist water flow port 126a and is housed in the mist cylindrical part housing section 130k of the screen 130. A second shower water flow port 126b (corresponding to the "discharge port") is provided in the center of the switching case 126, through which the fluid flowing in from the first shower water flow port 122b of the switching plate 122 passes. A recess 126d for the first connecting projection is provided at the upper end of the rear side of the switching case 126 and engages with the first connecting projection 122c of the switching plate 122. A second connecting projection 126c is provided at the upper end of the switching case 126 and fits into the second connecting projection recess 130c of the screen 130, thereby restricting the rotational movement of the switching case 126 alone. A second cylindrical portion 126f is provided on the outer circumference of the switching case 126 and extends to the rear side. An O-ring recess 126e is provided in the center of the second cylindrical portion 126f and houses an O-ring 127 for watertight connection between the switching case 126 and the screen 130. It consists of. 【0054】 In the first embodiment, there are 18 second mist water flow ports 126a, as shown in Figure 16, but the number can be adjusted as appropriate, taking into consideration the size of the water discharge unit 120, etc. 【0055】 The mist atomizer 129 (corresponding to the "swirling flow generation mechanism") is used to form a mist with small water droplets. As shown in Figures 7 and 8, its rear side is connected to the switching case 126, and its front side is housed in the mist atomizer housing section 130e of the screen 130 (corresponding to the "swirling flow generation mechanism housing section"). 【0056】 The mist coma 129 is mainly, as shown in Figures 18(a) to (c), A water passage hole 129a is provided inside the mist compost 129, through which fluid from the second mist water flow port 126a of the switching case 126 passes in the front-rear direction. A fitting projection 129b is provided on the back of the mist atomizer 129 and fits into the second mist water flow port 126a provided on the switching case 126 to position the mist atomizer 129. A swirling channel 129c is provided on the front of the mist compost 129 to cause the fluid that has passed through the water passage hole 129a to swirl. It consists of. 【0057】 The screen 130, together with the switching case 126, forms the shower channel S. As shown in Figures 7 and 8, its rear side is connected to the switching case 126, and its side is connected to the fixing ring 131. 【0058】 Screen 130, as shown in Figures 19 to 21, is mainly, Mist outlets 130a (corresponding to "outlet") are evenly distributed on the screen 130, through which the fluid flowing in from the swirling channel 129c of the mist atomizer 129 passes. Shower outlets 130b (corresponding to "outlets") are evenly distributed on the screen 130, through which the fluid flowing in from the second shower water flow port 126b of the switching case 126 passes. A recess 130c for a second connecting projection is provided at the upper end of the rear side of the screen 130 and engages with the second connecting projection 126c of the switching case 126. A screw hole 130d is provided in the center of the back side of the screen 130, communicates with the screw hole 122d of the switching plate 122, and the screw 121 is fixed to it. A mist atomizer housing section 130e is evenly distributed on the screen 130 and houses the mist atomizers 129. A mist cylinder housing section 130k is provided around the mist atomizer housing section 130e and houses the mist cylindrical section 126g of the switching case 126. A lever 130f is provided on the front side of the screen 130 for rotating the water discharge unit 120. A third cylindrical portion 130i is provided on the outer circumference of the screen 130 and extends to the rear side. A rotation restricting part 130g is provided on the rear side of the third cylindrical part 130i and, by colliding with the contact part 151h of the purified water switching mechanism 140, restricts the rotation range of the water discharge unit 120. A second engaged portion 130h is provided on the front side of the third cylindrical portion 130i and engages with a second engaging portion provided on the fixing ring 131. A protruding portion 130j is provided around the shower outlet 130b and protrudes to the rear side to straighten the fluid passing through the shower outlet 130b. It consists of. 【0059】 In the first embodiment, 47 shower outlets 130b are provided, as shown in Figure 19, but the number can be adjusted as appropriate, taking into consideration the size of the water outlet unit 120, etc. 【0060】 Furthermore, as shown in Figure 19(b), it is preferable that the mist outlet 130a and the shower outlet 130b are positioned in both the first region A1 and the second region A2, with the water discharge surface of the screen 130 divided into a first region A1 and a second region A2 based on the distance from the center C. The distance from the center C is not particularly limited, as long as it includes the distance of the two outlets with different water discharge patterns. By arranging them in this way, water can be evenly distributed across the entire water outlet surface from two outlets with different water flow patterns. 【0061】 Furthermore, the first embodiment has a projection 130j that is provided around the shower outlet 130b and protrudes to the rear side, so that residual water can be prevented from flowing out of the shower outlet immediately after the water is stopped. In addition, the shower outlet 130b (flow path) can be made longer in the direction of water discharge, so the flow straightening effect can be enhanced. 【0062】 The fixing ring 131 integrates the switching plate 122, the switching case 126, and the screen 130. As shown in Figures 7 and 8, it is positioned on the side of the switching plate 122, the switching case 126, and the screen 130, and engages with the switching plate 122 and the screen 130. 【0063】 The fixing ring 131 is mainly, as shown in Figures 22 and 23, A first engaging portion 131a is provided on the back side of the side surface of the fixing ring 131 and engages with the first engaged portion 122e of the switching plate 122. A second engaging portion 131b is provided on the front side of the side of the fixing ring 131 and engages with the second engaged portion 130h of the screen 130. It consists of. 【0064】 [Switching between shower and mist spray modes] The details of the switching operation between shower spray and mist spray are as follows: The mist discharge state switching mechanism operates by manipulating the lever 130f on the screen 130 to rotate the water discharge unit 120, causing the valve portion 114b of the switching valve 114 to block the first shower water flow port 122b of the switching plate 122. Therefore, the fluid from the water passage section 112 passes through the first mist water flow port 122a of the switching plate 122, the mist flow path M which is a watertight space between the switching plate 122 and the switching case 126, the second mist water flow port 126a of the switching case 126, and the mist compost 129, and is discharged from the mist outlet 130a of the screen 130. 【0065】 The shower water discharge switching mechanism operates by manipulating the lever 130f on the screen 130 to rotate the water discharge unit 120, causing the valve portion 114b of the switching valve 114 to block the first mist water flow port 122a of the switching plate 122. Therefore, the fluid from the water passage section 112 passes through the first shower water flow port 122b of the switching plate 122, the second shower water flow port 126b of the switching case 126, and the shower flow path S, which is a watertight space between the switching case 126 and the screen 130, and is discharged from the shower outlet 130b of the screen 130. 【0066】 In this way, the switching plate 122, the switching case 126, and the screen 130 are arranged in the direction of water discharge to form a hierarchical flow path, and the water flow in each hierarchical level is not mixed with each other. With this configuration, the arrangement of the two water outlets with different discharge patterns is not limited, so that water can be discharged evenly from the two water outlets with different discharge patterns across the entire water discharge surface. 【0067】 Furthermore, by operating the lever 130f on the screen 130 to rotate the water discharge unit 120, the water discharge pattern can be switched, making it easy to switch between patterns. 【0068】 Furthermore, as shown in Figure 8(b), among the spaces formed between the switching case 126 and the screen 130 (shower flow path S), the space K at the screen inlet where water flows from the switching case 126 to the screen 130 is larger than the other spaces. Therefore, by widening the space K at the inlet to the screen 130, which is the most affected by pressure loss among the shower flow path S, the pressure loss can be reduced and the reduction in water discharge volume can be mitigated. 【0069】 [Assembly method for the water discharge unit 110] Next, the assembly method for the water discharge unit 110 will be explained. The assembly method for the water discharge unit 110 includes a first step of attaching the water passage pipe 112 to the upper cover 111, a second step of assembling the water discharge unit 120, and a third step of attaching the water discharge unit 120 to the water passage pipe 112 together with the switching valve 114. The order of the first and second steps is not particularly limited. 【0070】 In the first step, as shown in Figures 6 and 9, first, the water passage pipe 112b of the water passage pipe section 112 is passed through the hole 111f for the water discharge unit section of the upper cover 111 towards the grip section 111c, and the screw hole 112a of the water passage pipe section 112 is positioned to communicate with the screw hole 111a of the upper cover 111. Then, the screw 117 shown in Figure 8(a) is passed through the screw hole 112a and fixed to the screw hole 111a, thereby connecting the water passage pipe section 112 and the upper cover 111. 【0071】 In the second step, as shown in Figures 14 to 17, first, the switching plate 122 and the switching case 126 are connected such that the first connecting projection 122c and the recess 126d for the first connecting projection fit together. When connecting, an O-ring 123 is placed in the O-ring recess 122f provided in the first cylindrical portion 122g of the switching plate 122, and a sealing member 124 is attached around the first shower water flow port 122b, which extends to the back side of the switching case 126 and is cylindrical in shape. This creates a watertight space between the switching plate 122 and the switching case 126, and this space constitutes the mist flow path M as shown in Figure 8(a). 【0072】 Next, as shown in Figures 16 to 21, the switching case 126 and the screen 130 are connected such that the second connecting projection 126c and the recess 130c for the second connecting projection fit together. When connecting, an O-ring 127 is placed in the O-ring recess 126e provided in the second cylindrical portion 126f of the switching case 126, a sealing member 125 is placed around the cylindrical screw hole 130d extending to the back side of the screen 130, and a sealing member 128 is placed around the cylindrical mist portion 126g extending to the front side of the switching case 126. This creates a watertight space between the switching case 126 and the screen 130, and this space constitutes the shower flow path S as shown in Figure 8(b). Furthermore, when connecting, the mist atomizer 129 is housed in the mist atomizer housing section 130e. 【0073】 In this way, the mist cylindrical section 126g and the mist cylindrical section housing section 130k are sealed by the sealing member 128. This means that the mist outlets 130a, which become larger due to the mist atomizer 129, can be individually sealed, thus ensuring the sealing performance of the mist outlets 130a. Furthermore, because the sealing is performed by the cylindrical section, the sealing performance can be better ensured against pressure in the direction of water discharge. As a result, the arrangement of the mist outlets 130a can be selected more freely. 【0074】 Furthermore, since the first cylindrical section 122g and the second cylindrical section 126f, and the second cylindrical section 126f and the third cylindrical section 130i are sealed by an elastic body, the sealing performance of the hierarchical flow path formed by the switching plate 122, the switching case 126, and the screen 130 can be ensured. In addition, because the sealing is performed by the cylindrical sections, the sealing performance can be better ensured against pressure in the discharge direction. 【0075】 Next, as shown in Figures 22 and 23, the assembly of the water discharge unit 120 is completed by engaging the second engaging portion 131b of the fixing ring 131 with the second engaged portion 130h of the screen 130, while engaging the first engaging portion 131a with the first engaged portion 122e of the switching plate 122. 【0076】 In this way, the switching plate 122, the switching case 126, and the screen 130 are integrated by the fixing ring 131 to form the water discharge unit 120, which simplifies the switching structure for water pattern switching, and the water discharge pattern can be switched by rotating the screen. 【0077】 In the third step, as shown in Figures 6, 8(a), and 12, first, one end of the spring 113 is housed in the spring receiving portion 112g of the water passage pipe 112, and the spring projection 114a of the switching valve 114 is attached to the other end of the spring 113. 【0078】 Next, as shown in Figure 8, the water passage section 112 and the water discharge unit 120 are connected so that the valve section 114b of the switching valve 114 and the first mist water flow port 122a or the first shower water flow port 122b provided on the switching plate 122 overlap. When connecting, an O-ring 115 is placed in the O-ring recess 114c of the switching valve 114, and a V-packing 116 is placed around the cylindrical switching valve housing 112e of the water passage pipe 112. This creates a watertight space between the water passage pipe 112 and the water discharge unit 120, which then forms a water channel. 【0079】 To elaborate on the connection process between the water passage section 112 and the water discharge unit 120 in the third step, as shown in Figure 24(a), first, the angle of the water discharge unit 120 is adjusted so that the flange 122h of the water discharge unit 120 (switching plate 122) fits into the flange receiving section 112c of the water passage section 112. 【0080】 Next, the water discharge unit 120 is rotated so that the flange 122h of the water discharge unit 120 (switching plate 122) fits into the restricting portion 112d of the water passage pipe 112. It is preferable that the amount of rotation of the water discharge unit 120 be such that the water passage pipe 112b is positioned between the two rotation restricting portions 130g, taking into account the rotation restriction of the water discharge unit 120. 【0081】 Because the assembly method for the water discharge unit 110 involves these steps, the water discharge unit 110 can be assembled in a simpler process. 【0082】 [Purified water switching mechanism 140] As shown in Figure 25, the purified raw water switching mechanism 140 mainly consists of a button 141, a button guide 142, a first switching sprocket 143, a purified raw water switching cover 144, a second switching sprocket 145, a switching movable body 146, a water-stopping ring 147, a spring 150, a purified raw water switching case 151, and an upper cover 111. 【0083】 Button 141 is used to activate the purified water switching mechanism 140 and is connected to the button guide 142, the first switching sprocket 143, and the switching movable body 146, as shown in Figure 29. 【0084】 Button 141 is mainly, as shown in Figures 25 and 29, An engaging portion 141a is provided on the outer surface of the cylindrical button 141 and engages with the button guide 142. A engaged portion 141b is provided on the inner circumferential surface of the cylindrical button 141 and engages with the engaging claw 146a of the switching movable body 146. It consists of. 【0085】 The button guide 142 guides the movement of the button 141 and prevents the purified water switching mechanism 140 from coming out of the button hole 111b of the upper cover 111. As shown in Figure 29, it is connected to the button 141, the engaged portion 111e of the upper cover 111, and the engaged portion 166d of the upper water purification cartridge case 166. 【0086】 The button guide 142 is mainly as shown in Figures 25, 26 and 29, An engaging portion 142a is provided on the outer circumferential surface of the cylindrical button guide 142, on the side facing the water discharge unit 110 (upper end), and engages with the engaged portion 111e of the upper cover 111. An engaged portion 142b is provided on the outer circumferential surface on the water purification cartridge portion 160 side (lower end), and engages with the engaging portion 166d of the upper water purification cartridge case 166. It consists of. 【0087】 The purified water switching cover 144 constitutes the operation button mechanism described later and is connected to the purified water switching case 151, as shown in Figure 29. 【0088】 The purified water switching cover 144 is mainly, as shown in Figures 25 and 29, A flange portion 144a is provided on the outer surface of the purified water switching cover 144 and engages with the first engaging portion 151d of the purified water switching case 151. An engaging claw insertion portion 144b is provided on the inside of the flange portion 144a, through which the engaging claw 146a of the switching movable body 146 is inserted. It consists of. 【0089】 The switching movable body 146, together with the water-stopping ring 147 and the O-ring 148 (corresponding to the "elastic body"), constitutes a switching valve for opening and closing the case-side purified water flow path 151a of the purified raw water switching case 151. As shown in Figure 29, it is connected to the button 141 via the purified raw water switching cover 144 and, together with the spring 150, is housed in the purified raw water switching valve housing section 151j of the purified raw water switching case 151. 【0090】 The switching mechanism 146 is mainly as shown in Figures 25, 27, and 29, The first cylindrical portion 146b is provided above the switching movable body 146. An engaging claw 146a is provided at the upper end of the first cylindrical portion 146b and engages with the engaged portion 141b of the button 141. A second cylindrical portion 146e is provided at the lower end of the first cylindrical portion 146b, and a water-sealing ring 147 is attached to it. A recess for an O-ring 146c is provided on the outer circumferential surface of the second cylindrical portion 146e to receive the O-ring 148. On the inner side of the upper end of the second cylindrical portion 146e, there is a spring projection 146d that connects to the spring 150. It consists of. 【0091】 The water-stopping ring 147 is used to open and close the case-side purified water flow path 151a of the purified raw water switching case 151, and is attached to the switching movable body 146 via an O-ring 148, as shown in Figure 29. 【0092】 The water-stopping ring 147 is mainly, as shown in Figures 25, 27, and 29, A water-stopping part 147b is provided in the circumferential center of the water-stopping ring 147 and opens and closes the case-side purified water flow path 151a of the purified raw water switching case 151. The water-stopping ring 147 has notches 147a into which O-rings 148 are inserted to bias the water-stopping portion 147b toward the case-side purified water flow path 151a of the purified raw water switching case 151, It consists of. 【0093】 The notch 147a formed in the water-sealing ring 147 allows the notch 147a of the water-sealing ring 147 to fit into the O-ring 148, making it easier to attach the water-sealing ring 147 to the switching movable body 146. 【0094】 The water-stopping ring 147 is composed of multiple parts, as shown in Figure 27(a). This configuration makes it easy to attach the water-stopping ring 147 to the switching movable body 146. Furthermore, when pressing the water-stopping ring 147 against multiple case-side water purification channels 151a, it becomes possible to press the water-stopping portion 147b, which is the sealing surface of the water-stopping ring 147, perpendicular to the case-side water purification channels 151a. In the first embodiment, the water-stopping ring 147 is composed of two parts, but it is not limited to two parts. 【0095】 The water-stopping ring 147 can be made of resin or metal. From the viewpoint of sliding properties, wear resistance, and cost, resin is preferred, and from the viewpoint of sliding properties and wear resistance, fluororesin and POM (polyacetal resin) are more preferred. 【0096】 The spring 150 constitutes the operation button mechanism, which will be described later. As shown in Figure 29, it is mounted between the spring projection 146d of the switching movable body 146 and the spring receiving portion 151e of the purified water switching case 151, biasing them in a direction that separates them from each other. In other words, the spring 150 exerts a spring force that resists the pressing operation of the button 141. 【0097】 The purified raw water switching case 151 houses the switching mobile body 146 and the like, and also constitutes the purified water flow path J and the raw water flow path G. As shown in Figure 29, its upper end is connected to the lower end of the water passage section 112 via an O-ring 161, and its lower end is connected to the upper purified water cartridge case 166. 【0098】 The purified water switching case 151 is mainly as shown in Figures 25, 28 to 33, Upper cylindrical section 151k provided above the purified water switching case 151, A housing section 151j for the purified water switching valve is provided below the upper cylindrical section 151k. A lower cylindrical section 151l is provided below the housing section 151j for the purified water switching valve. A contact portion 151h is provided on the outer circumference of the upper cylindrical portion 151k and, by contacting the rotation restricting portion 130g of the screen 130, restricts the rotational movement of the water discharge unit 120. A cylindrical section 151b is provided inside the upper cylindrical section 151k, through which purified water flowing out from the case-side purified water channel 151a passes. A case-side raw water channel 151c is provided between the upper cylindrical section 151k and the cylindrical section 151b, through which raw water passes. In the housing section 151j for the purified raw water switching valve, the case-side purified water flow path 151a is provided inside the cylindrical section 151b and inside the cylindrical connecting section 151m, through which purified water passes. A spring receiving part 151e is provided at the bottom of the rear side of the housing part 151j for the purified water switching valve, and receives the spring 150. A first engaging portion 151d is provided on the front side of the housing portion 151j for the purified water switching valve and engages with the flange portion 144a of the purified water switching cover 144. A cylindrical connection section 151m is provided inside the lower cylindrical section 151l, through which purified water flowing out of the water purification cartridge 167 passes. A case-side raw water channel 151c is provided between the lower cylindrical section 151l and the connecting section 151m, through which the raw water passes. A second engaging portion 151f is provided on the outer circumferential surface of the lower cylindrical portion 151l and engages with the engaged portion 166a of the upper water purification cartridge case 166. A positioning projection 151g is provided on the outer surface of the lower cylindrical portion 151l and contacts the positioning projection 166c of the upper water purification cartridge case 166. A marker 151i is provided on the outer surface of the lower cylindrical part 151l and is used when connecting to the upper water purification cartridge case 166. It consists of. 【0099】 In the first embodiment, as shown in Figure 28, the spring receiving portion 151e is not shaped to fill the entire bottom rear portion of the housing 151j for the purified water switching valve. In other words, the portion of the bottom rear portion of the housing 151j for the purified water switching valve that does not have the spring receiving portion 151e is open. This configuration prevents pressure fluctuations within the 151j housing for the purified water switching valve from interfering with the operation of the switching mechanism. 【0100】 The upper cover 111 is mainly, as shown in Figures 10 and 29, A engaged portion 111e is provided on the water discharge unit portion 110 side (upper end) of the button hole 111b and engages with the engaging portion 142a of the button guide 142. A fitted portion 111d engages with the spring receiving portion 151e of the purified water switching case 151, and restricts the circumferential movement and upward movement of the spring receiving portion 151e. It consists of. 【0101】 [Switching mechanism] The housing section 151j for the purified water switching valve houses a switching mechanism consisting of a button 141, a first switching sprocket 143, a purified water switching cover 144, a second switching sprocket 145, a switching movable body 146, a water-stopping ring 147, an O-ring 148, a Y-packing 149, and a spring 150, as shown in Figures 25 and 29. Therefore, when button 141 is pressed against the spring force of spring 150, the switching mechanism switches between purified water. In addition, the second switching sprocket 145 rotates with each press of button 141 and can be held in two different positions. The switching mechanism realizes the alternate operation described later. 【0102】 This switching mechanism employs a thrust lock mechanism. This thrust lock mechanism is widely used as a switching mechanism. For example, the thrust lock mechanism is also used in ballpoint pens, enabling the extension and retraction of the ballpoint pen tip. For example, this thrust lock mechanism is also employed in Japanese Patent Publication No. 3454756 and Japanese Patent Publication No. 5721679. The switching mechanism of this embodiment is similar to the mechanism described in these patent publications. 【0103】 Generally, heart-shaped cam mechanisms, rotary cam mechanisms, ratchet cam mechanisms, etc., are known as operating button mechanisms for so-called alternate operation. Any of these mechanisms can be used as a switching mechanism. Any switching mechanism that enables alternate operation can be used. 【0104】 The details of the alternate operation of the switching mechanism are as follows: When button 141, located in the protruding position (first position) as shown in Figure 30, is pressed, button 141 moves to the fully pressed position (maximum pressed position: third position), which is not shown. When the pressure is released, button 141 moves from this maximum pressed position (third position) to the pressed position (second position) shown in Figure 31 and remains stationary. This pressed position (second position) is maintained unless pressure is applied again. Next, when button 141, which is in the pressed-in position (second position), is pressed, button 141 moves to the maximum pressed-in position (third position). When the pressure is released, button 141 moves from this maximum pressed-in position (third position) to the popped-out position (first position) and comes to rest. Thus, each time button 141 is pressed, it alternately stops at the popped-out position (first position) and the pressed-in position (second position), and with each transition between these positions, it passes through the maximum pressed-in position (third position). The range of motion of button 141 is from the first position to the third position. The direction of movement of button 141 is in the forward and backward direction. 【0105】 [Operation of the switching mechanism] The details of the operation of the switching mechanism for opening and closing the case-side water purification channel 151a are as follows. As shown in Figure 30, the closing position switching mechanism has button 141 in the popped-out position (first position). In order to move button 141 from the pressed-in position (second position) to the popped-out position (first position), it is necessary to press button 141 to the fully pressed position (third position) and then release the pressure. In the closed position, the water-stopping ring 147 is pressed against the case-side purified water channel 151a by the O-ring 148, blocking the case-side purified water channel 151a. 【0106】 As shown in Figure 31, the release position switching mechanism is such that button 141 is in the pressed-in position (second position). In order to move button 141 from the popped-out position (first position) to the pressed-in position (second position), it is necessary to press button 141 to the fully pressed position (third position) and then release the pressure. In the open position, the water-stopping ring 147 is located behind the case-side water purification channel 151a, so the case-side water purification channel 151a is not blocked. 【0107】 The button 141 of the switching mechanism changes position between the extended position (first position) and the pressed position (second position), and this change allows the user to be notified of the switch between purified water and raw water. When switching between purified and unpurified water by pressing button 141, if button 141 were always in the protruding position, the user would not be able to recognize from its appearance whether the device is currently in purified water mode or unpurified water mode. Therefore, in the embodiment of the present invention, the position of button 141 is deliberately changed. 【0108】 [Assembly method for the switching mechanism] Next, we will explain how to assemble the switching mechanism. Note that the assembly method for the purified water switching mechanism 140 will be explained together with the assembly method for the shower head 100, which will be described later. The assembly method for the switching mechanism is: The first step is to connect the first switching frame 143 to the button 141. The second step involves connecting the second switching frame 145 to the first switching frame 143 via the purified water switching cover 144. The third step involves connecting the button 141 to the engaging claw 146a of the switching movable body 146 via the purified water switching cover 144. The fourth step involves attaching the water-stopping ring 147 to the switching movable body 146. The fifth step involves attaching the spring 150 to the switching mobile body 146 and then housing the switching mobile body 146 in the purified water switching case 151. It has. Steps 1 through 3 are simple connection steps and therefore will not be explained. Furthermore, the order of steps 1 through 4 is not particularly limited. 【0109】 In the fourth step, as shown in Figure 27(a), first, the O-ring 148 is attached to the O-ring recess 146c of the switching movable body 146. Next, as shown in Figure 27(b), the water-sealing ring 147 is attached to the outside of the O-ring 148 mounted on the switching movable body 146. Since the water-sealing ring 147 has notches 147a at both ends in the circumferential direction, it can effectively hold the O-ring 148. 【0110】 Thus, in the first embodiment, the O-ring 148 is positioned between the water-stopping ring 147 and the switching movable body 146. In other words, when switching the flow path, the water-stopping ring 147, which is made of resin, directly seals the passage instead of the elastic O-ring 148. This prevents seal failures caused by wear due to sliding during the switching operation or seizing due to deterioration over time. Furthermore, the O-ring 148 is placed inside the water-stopping ring 147, and the reaction force of the O-ring 148 presses the water-stopping ring 147 against the case-side water purification channel 151a, thereby improving the sealing performance. 【0111】 In the fifth step, after attaching the spring 150 to the switching movable body 146 that has gone through the fourth step, when housing the switching movable body 146 in the purified water switching case 151, as shown in Figure 29, the flange portion 144a of the purified water switching cover 144 snap-engages with the first engaging portion 151d of the purified water switching case 151. This allows the assembly worker to confirm that the switching mechanism 146 is properly stored in the purified water switching case 151 by the click sound or other sound produced when the snap engages. 【0112】 [Water purification cartridge section 160] As shown in Figure 4, the water purification cartridge section 160 (corresponding to the "cartridge section") mainly consists of an upper nonwoven fabric 165, an upper water purification cartridge case 166, a water purification cartridge 167, a lid 168, a lower nonwoven fabric 169, a lower water purification cartridge case 171, a strainer 173, and a lower body 174. 【0113】 The upper water purification cartridge case 166 is for housing the water purification cartridge 167, and as shown in Figures 32 and 33, its upper end is connected to the raw water purification switching case 151, and its lower end is connected to the lower water purification cartridge case 171. 【0114】 The upper water filter cartridge case 166 is mainly, as shown in Figures 32 and 33, An engaged portion 166a is provided at the upper end of the upper water purification cartridge case 166 and engages with the second engaging portion 151f of the purified raw water switching case 151. A positioning projection 166c is provided at the upper end of the upper water purification cartridge case 166, which abuts against the positioning projection 151g of the raw water purification switching case 151, and whose circumferential movement is restricted by the fitted portion 111d of the upper cover 111. An engaging portion 166d is provided at the upper end of the upper water filter cartridge case 166 and engages with the engaged portion 142b of the button guide 142. It consists of. 【0115】 The water purification cartridge 167 (corresponding to "cartridge") contains chemicals and is used to dissolve the chemicals in the raw water. Its upper part is housed in the upper water purification cartridge case 166, and its lower part is housed in the lower water purification cartridge case 171. 【0116】 The solution containing the chemicals from the water purification cartridge 167 passes through the case-side water purification channel 151a of the raw water purification case 151, which is opened and closed by a switching mechanism. This configuration allows the switching mechanism to select whether or not to dissolve the drug in the fluid. 【0117】 The water purification cartridge 167 can use chemicals such as calcium sulfite (equivalent to a "chlorine remover"), vitamin C (ascorbic acid) (equivalent to a "chlorine remover"), cleaning agents such as shampoo, soapy water, and detergents, moisturizers, perfumes, slimming agents, whitening waters, and antiperspirants as cosmetic additives. This configuration allows for the dissolution of a more user-friendly drug into the fluid. 【0118】 Regarding the assembly method of the water purification cartridge section 160, it basically only involves connecting the upper nonwoven fabric 165, upper water purification cartridge case 166, water purification cartridge 167, lid 168, lower nonwoven fabric 169, lower water purification cartridge case 171, strainer 173, and lower body 174 in that order via O-rings and gaskets, so a detailed explanation will be omitted. 【0119】 [How to assemble the shower head 100] Next, we will explain how to assemble the showerhead 100. The assembly instructions for the shower head 100 are as follows: The first step is to assemble the water discharge unit 110. The second step is to assemble the switching mechanism. The third step is to assemble the water purification cartridge section 160. The fourth step involves connecting the switching mechanism and the water purification cartridge section 160. The fifth step involves inserting the connected switching mechanism and the water purification cartridge section 160 into the upper cover 111 and connecting the switching mechanism to the water passage pipe section 112. The sixth step is to connect the button guide 142 to the switching mechanism. It has. Steps 1 through 3 are as previously explained, so we will omit further explanation. Furthermore, the order of steps 1 through 3 is not particularly limited. 【0120】 In the fourth step, as shown in Figures 32 and 33, first, the mark 151i on the purified water switching case 151 and the mark 166b on the upper purified water cartridge case 166 are aligned, and then the two are connected. When connected, the engaged portion 166a of the upper water purification cartridge case 166 is guided by the second engaged portion 151f of the raw water purification switching case 151, expands in diameter, and then snaps into place with the upper end of the second engaged portion 151f. 【0121】 Next, the upper water purification cartridge case 166 is rotated relative to the raw water purification switching case 151 until their positioning protrusions (151g, 166c) come into contact with each other. The engaged portion 166a of the upper water purification cartridge case 166 is configured such that the hole gradually becomes smaller along the direction of rotation. This allows for gradual restriction of the vertical movement of the second engaged portion 151f of the raw water purification switching case 151 (the direction in which the raw water purification switching case 151 and the upper water purification cartridge case 166 move apart) during rotation. 【0122】 In the fifth step, as shown in Figure 34, the connected switching mechanism and the water purification cartridge section 160 are inserted into the upper cover 111, and the switching mechanism is connected to the water passage pipe section 112 via the O-ring 161. When inserting, pressing button 141 while performing the insertion operation prevents button 141 from colliding with the open end of the upper cover 111. The switching mechanism is inserted until the spring receiving portion 151e contacts the upper end of the fitting portion 111d of the upper cover 111. Once insertion is complete, the button 141 inserted into the upper cover 111 protrudes outward from the button hole 111b provided in the upper cover 111. 【0123】 In the fifth step, when the switching mechanism is connected to the water passage section 112, as shown in Figure 29, the flow path (corresponding to the "flow velocity acceleration section R"), which is composed of the inside of the water passage section 112 and the outside of the cylindrical section 151b of the purified raw water switching case 151, is narrower than the other raw water flow paths G. This configuration allows for an increase in the fluid velocity within the narrow channel. The increased fluid velocity creates negative pressure around the channel, drawing in fluid from the case-side purified water channel 151a, which is opened and closed by the water-stopping ring 147. This ensures a sufficient supply of purified water (chemically dissolved water) relative to the raw water, resulting in the discharge of a fluid mixture of purified and raw water at a suitable concentration. Furthermore, if the chemical in the water purification cartridge 167 is a chlorine remover, purified water with sufficient chlorine removal can be discharged. 【0124】 In the first step of assembling the water discharge unit 110, the water passage pipe 112b is located between two rotation restricting parts 130g provided on the screen 130. Therefore, when the purified water switching case 151, which is part of the switching mechanism, is connected to the water passage pipe 112b, the rotation restricting parts 130g are rotated by a predetermined amount in one direction and the other, causing them to come into contact with the contact part 151h. Furthermore, the two rotation restricting parts 130g are positioned so that the connection between the switching plate and the water passage pipe is not released within that predetermined range. Therefore, if the water discharge unit 120 (switching plate 122) is connected to the water passage section 112, and then the water passage section 112 is connected to the purified raw water switching case 151, the rotation range of the water discharge unit 120 (screen 130) is restricted by the rotation restricting section 130g of the purified raw water switching case, thereby preventing the connection between the water discharge unit 120 (switching plate 122) and the water passage section 112 from becoming disconnected. 【0125】 In the sixth step, the button guide 142 is connected to the switching mechanism. Specifically, as shown in Figures 26 and 29, the engaging portion 142a of the button guide 142 is engaged with the engaged portion 111e of the upper cover 111, while the engaged portion 142b is engaged with the engaging portion 166d of the upper water purification cartridge case 166. When the button guide 142 is installed, the engaging portion 141a of the button 141 comes into contact with the button guide 142 when the button 141 moves in the direction of exiting the button hole 111b (forward). This configuration prevents the button guide 142 from slipping out of the button hole 111b. 【0126】 Because the assembly method for shower head 100 involves these steps, it is possible to assemble shower head 100 using a simpler process. 【0127】 [Second Embodiment] 〔overview〕 A second embodiment of the shower head according to the present invention will be described with reference to the drawings. The second embodiment differs from the first embodiment mainly in the configuration of the water-stopping ring 247. Other configurations are the same as in the first embodiment, and therefore will not be described further. 【0128】 The water-stopping ring 247 is used to open and close the case-side purified water flow path 151a of the purified raw water switching case 151, and is attached to the switching movable body 146 via the O-ring 148, as shown in Figure 29. 【0129】 The water-stopping ring 247 is mainly, as shown in Figure 36, A water-stopping section 247b is provided in the circumferential center of the water-stopping ring 247 and opens and closes the case-side purified water flow path 151a of the purified raw water switching case 151. A rib 247c is provided in the circumferential center of the water-stopping section 247b, forming a minute gap between the case-side purified water flow path 151a of the purified raw water switching case 151 and the water-stopping section 247b. The water-stopping ring 247 has circumferentially provided notches 247a into which an O-ring 148 fits to bias the water-stopping portion 247b toward the case-side purified water flow path 151a of the purified raw water switching case 151. It consists of. 【0130】 In the second embodiment, since the water-stopping ring 247 is provided with ribs 247c, a minute gap can be formed between the case-side purified water channel 151a and the water-stopping section 247b. This makes it possible to keep the case-side purified water channel 151a open at all times and continuously allow a small amount of chemical to flow. In other words, it is possible to adjust the amount of purified water flowing out from the case-side purified water channel 151a. For example, when using a humectant as the chemical, the user can select the concentration of the humectant dissolved in the water that is discharged according to their preference. 【0131】 [Third Embodiment] 〔overview〕 A third embodiment of the shower head according to the present invention will be described with reference to the drawings. The third embodiment differs from the first embodiment mainly in the configuration of the purified raw water switching mechanism 340, as shown in Figures 37 to 41. Other configurations are the same as in the first embodiment, or are based on general technology, and therefore their explanation is omitted. 【0132】 [Purified water switching mechanism 340] As shown in Figures 42 to 45, the purified water switching mechanism 340 mainly consists of a dial 341, a dial guide 342, a switching valve 343, a purified water switching case 345, a cap 347, and an upper cover 111. 【0133】 The dial 341 is used to activate the purified water switching mechanism 340 and is connected to the switching valve 343 via the dial guide 342, as shown in Figures 42 to 45. 【0134】 Dial 341 is mainly, as shown in Figures 42 to 45, A first cylindrical portion 341a is provided on the outer circumference of the dial 341, and its outer surface serves as an operating surface for the user to operate. The second cylindrical portion 341b is provided inside the first cylindrical portion 341a. A engaged portion 341c is provided on the second cylindrical portion 341b and engages with the first engaging portion 343b of the switching valve 343. A fitted portion 341d is provided on the second cylindrical portion 341b and fits with the first fitting portion 343a of the switching valve 343. It consists of. 【0135】 The dial guide 342 is for preventing the purified water switching mechanism 340 from coming loose, and is connected to the upper cover 311 as shown in Figures 42 to 45. 【0136】 The dial guide 342 is substantially cylindrical in shape, as shown in Figures 42 to 45, and mainly, A portion 342a is provided on the upper end surface of the dial guide 342 and engages with the engaging portion 311d of the upper cover 311. A flange portion 342b is provided at the rear end of the dial guide 342 and contacts the end of the cylindrical portion 311b of the upper cover 311. A fitting portion 342c is provided on the circumferential surface of the dial guide 342 and fits with the fitting portion 311c of the upper cover 311. It consists of. 【0137】 The switching valve 343 is for switching the purified raw water, and as shown in Figures 42 to 45, it is connected to the cap 347 via the purified raw water switching case 345 and to the dial 341 via the dial guide 342. 【0138】 The switching valve 343 is mainly, as shown in Figures 42 to 45, A first fitting portion 343a is provided at the rear end of the switching valve 343 and fits with the fitting portion 341d of the dial 341. A first engaging portion 343b is provided in front of the first fitting portion 343a and engages with the engaged portion 341c of the dial 341. A flange portion 343c is provided in front of the first engaging portion 343b and contacts the stepped portion 345c of the purified water switching case 345 via a packing 344. An opening 343d is provided in front of the flange portion 343c and communicates with the case-side water purification port 345d of the purified raw water switching case 345. A gasket recess 343e is provided in front of the opening 343d and accommodates the gasket 346. A second fitting portion 343f is provided at the front end of the switching valve 343 and fits with the fitting portion 347c of the cap 347. A second engaging portion 343g is provided at the front end of the switching valve 343 and engages with the engaged portion 347b of the cap 347. It consists of. 【0139】 The purified raw water switching case 345 houses the switching valve 343 and constitutes the purified water flow path J and the raw water flow path G, and is connected to the switching valve 343 as shown in Figures 42 to 45. 【0140】 The purified water switching case 345 is mainly as shown in Figures 40, 42 to 45, A fitting portion 345a is provided at the upper end of the purified water switching case 345 and fits with the fitted portion 361a of the adapter 361. A switching valve housing section 345b is provided at approximately the center in the vertical direction of the purified water switching case 345 and houses the switching valve 343. A stepped portion 345c is provided on the rear side of the switching valve housing portion 345b and abuts against the flange portion 343c of the switching valve 343. A case-side water purification port 345d is provided in front of the stepped portion 345c and communicates with the opening 343d of the switching valve 343. It consists of. 【0141】 The cap 347 has an indicator to allow the user to distinguish between purified water and raw water, and is connected to the switching valve 343 as shown in Figures 42 to 45. 【0142】 Cap 347 is mainly, as shown in Figures 42 to 45, A display unit 347d is provided at the front end of the cap 347 to allow the user to distinguish between purified water and raw water. A cylindrical portion 347a is provided behind the display unit 347d, A engaged portion 347b is provided on the outer circumferential surface of the cylindrical portion 347a and engages with the second engaging portion 343g of the switching valve 343. A fitted portion 347c is provided on the outer circumferential surface of the cylindrical portion 347a and fits with the second fitting portion 343f of the switching valve 343. It consists of. 【0143】 The upper cover 311 is mainly, as shown in Figure 44, A button hole 311a is provided on the rear side of the upper cover 311, and houses the dial guide 342. A cylindrical portion 311b is provided inside the button hole 311a and contacts the flange portion 342b of the dial guide 342. A fitted portion 311c is provided on the cylindrical portion 311b and fits with the fitting portion 342c of the dial guide 342. An engaging portion 311d is provided on the inner circumferential surface of the cylindrical portion 311b and engages with the engaged portion 342a of the dial guide 342. It consists of. 【0144】 [Switching mechanism] As shown in Figure 45, the switching mechanism mainly consists of a dial 341, a dial guide 342, a switching valve 343, packings 344 and 346, and a cap 347, and is housed in the switching valve housing 345b. When the dial 341 is rotated, the switching mechanism switches between purified raw water. 【0145】 [Operation of the switching mechanism] The details of the operation of the switching mechanism for opening and closing the case-side water outlet 345d are as follows: As shown in Figures 42, 43, and 45, the switching mechanism for the open position has an opening 343d of the switching valve 343 that faces vertically and communicates with the case-side water inlet 345d, and the display section 347d of the cap 347 is a vertical line display. In order to move the switching mechanism from the closed position to the open position, it is necessary to rotate the dial 341 90 degrees around the axial direction of the switching valve 343. 【0146】 The switching mechanism for the closed position is located in the position obtained by rotating the dial 341 90 degrees around the axial direction of the switching valve 343 from the open position. In this position, the opening 343d of the switching valve 343 is facing left and right and is not in communication with the case-side water outlet 345d, and the display section 347d of the cap 347 is displayed as a horizontal line. In order to move the switching mechanism from the open position to the closed position, it is necessary to rotate the dial 341 90 degrees around the axial direction of the switching valve 343. 【0147】 As described above, the switching mechanism is designed so that when the dial 341 is rotated, the switching valve 343 and the display unit 347d also rotate. When water is purified, the opening 343d and the case-side water purification port 345d are connected, and the display unit 347d displays a vertical line. Therefore, the user can be notified of the switch between purified and raw water by the change in the display unit 347d. This eliminates the need for the user to look at the dial 341 on the back to check whether it is purified or raw water, thus improving user convenience. 【0148】 [Assembly method for the purified water switching mechanism 340] Next, we will explain how to assemble the purified water switching mechanism 340. The assembly method for the purified water switching mechanism 340 is as follows: The first step is to insert the purified water switching case 345 into the upper cover 311. The second step is to connect the dial 341 and the switching valve 343 via the dial guide 342. The third step involves inserting the switching valve 343 into the upper cover 311 and the purified water switching case 345. The fourth step is to attach the cap 347 to the switching valve 343. It has. Steps 1, 2, and 4 are simple connection steps and therefore will not be explained. The order of steps 1 and 2 is not restricted. 【0149】 In the third step, first, a switching valve 343, to which a dial 341 and a dial guide 342 are connected, is inserted into the upper cover 311 and the purified water switching case 345. At that time, the engaged portion 342a of the dial guide 342 engages with the engaged portion 311d of the upper cover 311, so that the switching valve 343 is fixed to the upper cover 311 and the purified water switching case 345. 【0150】 Because the assembly method for the purified water switching mechanism 340 involves these steps, the purified water switching mechanism 340 can be assembled using a simpler process. 【0151】 [Fourth Embodiment] 〔Summary〕 A fourth embodiment of the shower head according to the present invention will be described while referring to the drawings. The fourth embodiment is mainly different from the first embodiment in the configuration of the screen 430. In particular, since the configuration for inhibiting the flow of water provided around the protrusion 130j is different from that of the first embodiment, the description will focus on that configuration. For other configurations, since they are the same as those of the first embodiment, the description will be omitted. Note that the same reference numerals are assigned to those having the same functions or configurations as the first embodiment. 【0152】 As shown in FIG. 46, the screen 430 is provided around the protrusion 130j and has ribs 430l that connect one protrusion 130j to other protrusions 130j and / or the mist cylinder portion housing portion 130k. has. 【0153】 In FIG. 46, the ribs 430l are shown in a mode of connecting two or three protrusions 130j to each other and a mode of connecting one protrusion 130j to two mist cylinder portion housing portions 130k. However, the mode of the ribs 430l is not limited to such connections. The mode of the ribs 430l is changed by the arrangement of the mist water discharge ports 130a and the shower water discharge ports 130b that can be evenly arranged on the screen 130. For example, there may also be a mode in which the ribs 430l connect four or more protrusions 130j to each other, or a mode in which two or more protrusions 130j are connected to two mist cylinder portion housing portions 130k. 【0154】 In the fourth embodiment, since the ribs 430l are provided around the protrusion 130j, the flow of water is inhibited by the ribs 430l. Thereby, a swirling flow due to a Karman vortex or the like is generated around the protrusion 130j, and the possibility of disturbing the water discharge shape from the shower water discharge port 130b can be reduced. 【0155】 〔Fifth Embodiment〕 〔Summary〕 A fifth embodiment of the shower head according to the present invention will be described while referring to the drawings. The fifth embodiment differs from the first embodiment mainly in the configuration of the screen 530. In particular, the protruding portion 530j is provided with a shape that makes it difficult for Karman vortices to be generated, which is a difference from the first embodiment, so this configuration will be described in detail. Other configurations are the same as in the first embodiment, so their description will be omitted. Note that the same reference numerals are used for parts with the same function or configuration as in the first embodiment. 【0156】 Screen 530 is as shown in Figures 47 and 48, A protruding portion 530j is provided around the shower outlet 130b and protrudes to the back side in a shape that makes it difficult for Karman vortices to be generated, which straightens the fluid passing through the shower outlet 130b. It has. 【0157】 Shapes that are less likely to generate Karman vortices include, for example, a roughly conical shape with a diameter that decreases towards the back side, as shown in Figure 47, or a shape with one or more streamlined sections, as shown in Figure 48, but are not limited to these shapes. 【0158】 In the fifth embodiment, the protrusion 530j is provided with a shape that makes it difficult for Karman vortices to be generated, thereby reducing the possibility of swirling flow caused by Karman vortices etc. around the protrusion 530j and disrupting the shape of the water discharged from the shower outlet 130b. 【0159】 [Sixth Embodiment] 〔overview〕 A sixth embodiment of the shower head according to the present invention will be described with reference to the drawings. The sixth embodiment differs from the first embodiment mainly in the configuration of the screen 630. In particular, the protruding portion 630j is provided with an inlet hole portion 630m having a shape that agitates the surrounding water flow, which is a difference from the first embodiment, so this configuration will be described in detail. Other configurations are the same as in the first embodiment, so their description will be omitted. Note that the same reference numerals are used for parts with the same function or configuration as in the first embodiment. 【0160】 Screen 630 is as shown in Figure 49, An inlet hole 630m is provided on the protruding portion 630j and has a shape that allows fluid passing through the shower outlet 130b to enter and agitate the surrounding water flow. It has. A shape that agitates the surrounding water flow could be, for example, a shape with corners, as shown in Figure 49, but is not limited to this shape. 【0161】 In the sixth embodiment, the water inlet hole 630m of the protruding portion 630j is provided with a shape that agitates the surrounding water flow, so that the surrounding water flow is agitated by the water inlet hole 630m. As a result, a swirling flow caused by Karman vortices, etc., is generated around the protruding portion 630j, which reduces the possibility of disturbance in the water discharge shape from the shower outlet 130b. 【0162】 [Seventh Embodiment] 〔overview〕 A seventh embodiment of the shower head according to the present invention will be described with reference to the drawings. The seventh embodiment differs from the first embodiment mainly in the configuration of the screen 730. In particular, it differs from the first embodiment in that there is no projection 130j protruding to the rear side around the shower outlet 130b, so this configuration will be described in detail. Other configurations are the same as in the first embodiment, so their description will be omitted. The same reference numerals are used for parts with the same function or configuration as in the first embodiment. 【0163】 In the screen 130 of the first embodiment, a projection 130j protruding to the back side was provided around the shower outlet 130b to straighten the fluid passing through the shower outlet 130b. As a result, swirling flow due to Karman vortices, etc., was generated around the projection 130j, which could disrupt the shape of the water discharged from the shower outlet 130b. Therefore, in the seventh embodiment, as shown in Figure 50, by not providing the protruding portion 130j, it is possible to reduce the possibility of swirling flow caused by Karman vortices, etc., around the protruding portion 130j, which could disrupt the shape of the water discharged from the shower outlet 130b. 【0164】 [Eighth Embodiment] 〔overview〕 An eighth embodiment of the shower head according to the present invention will be described with reference to the drawings. The eighth embodiment differs from the first embodiment mainly in the configuration of the screen 730 and the switching case 826. In particular, similar to the seventh embodiment, the eighth embodiment does not have a protruding portion 130j that protrudes to the rear side around the shower outlet 130b of the screen 730, and a rib 826h is provided on the front side of the switching case 826. These differences will be explained in detail, focusing on these configurations. Other configurations are the same as in the first embodiment, so their explanation will be omitted. The configuration of the screen 730 is also the same as in the seventh embodiment, so its explanation will be omitted. Components with the same function or configuration as in the first embodiment are denoted by the same reference numerals. 【0165】 The switching case 826 is as shown in Figures 51 to 53 and 55. A rib 826h is provided on the front side of the switching case 826, protruding toward the front side (screen 730 side), and has an R structure 826i on the central side surface of the switching case 826. It has. 【0166】 As shown in Figure 53, water that passes through the second shower water flow port 126b and enters the shower channel S formed between the switching case 826 and the screen 730 spreads throughout the entire shower channel S while passing through the gaps provided between the ribs 826h. Furthermore, in order to prevent the movement of the water flow F1 toward the shower outlet 130b from being unnecessarily obstructed by the ribs 826h, the shower outlet 130b is positioned in the gaps provided between the ribs 826h, and no ribs 826h are provided between the shower outlets 130b. 【0167】 In the eighth embodiment, as shown in FIG. 55, since the cylindrical mist cylinder housing portion 130k was provided in the shower channel S formed between the switching case 826 and the screen 730, a swirling flow F2 due to a Karman vortex or the like was generated around the mist cylinder housing portion 130k, and there was a possibility that the water discharge shape from the shower water discharge port 130b would be disturbed. Therefore, in the eighth embodiment, as shown in FIG. 55(b), an R structure 826i is provided on the surface of the rib 826h that blocks the flow of the water flow F1 (the surface on the center side of the switching case 826), so as to actively generate a longitudinal swirling flow F3 around the mist cylinder housing portion 130k. By adopting such a structure, the swirling flow F2 generated around the mist cylinder housing portion 130k can be agitated by the longitudinal swirling flow F3, and the possibility that the water discharge shape from the shower water discharge port 130b is disturbed can be reduced. Further, since the switching case 826 has the rib 826h, the space in the shower channel S formed between the switching case 826 and the screen 730 becomes small, so that it is possible to effectively prevent water from staying in the shower channel S. 【0168】 〔Other Embodiments〕 The shower head 100 according to the first embodiment had a form having one switching case 126, but the switching case may be two or more according to the type of the water discharge form or the like. By providing two or more switching cases, it becomes possible to increase the types of water discharge forms or the like. 【0169】 Regarding the screen, the rib 430l provided around the protruding portion 130j in the fourth embodiment for inhibiting the flow of water, the protruding portion 530j protruding toward the back side so as to have a shape in which a Karman vortex is unlikely to occur in the fifth embodiment, and the water inlet hole portion 630m provided in the protruding portion 630j in the sixth embodiment for allowing the fluid passing through the shower water discharge port 130b to enter and stirring the surrounding water flow can be configured in combination with each other. By combining these elements, it is possible to more effectively reduce the possibility of swirling flow caused by Karman vortices, etc., around the protruding part, which could disrupt the shape of the water discharge from the shower outlet 130b. [Industrial applicability] 【0170】 The shower head according to the present invention can be widely applied not only to household faucets but also to faucet devices that dispense and stop the flow of fluids such as water and hot water. [Explanation of symbols] 【0171】 100: Shower head 110: Water discharge unit 111: Top cover 111a: Screw hole 111b: Buttonhole 111c: Grip part 111d: Mated part 111e: Engaged part 111f: Hole for water discharge unit 112: Water pipe section 112a: Screw hole 112b: Water pipe 112c: Guard receiving part 112d:Regulatory Department 112e: Switching valve housing 112f: Disc section 112g: Spring receiving part 113: Spring 114: Switching valve 114a: Spring projection 114b: Valve part 114c: Recess for O-ring 114g: Recess for O-ring 115: O-ring 116: V-packing 117: Screw 120: Water discharge unit 121: Screw 122: Switching plate 122a: First mist water flow port 122b: First shower water flow port 122c: 1st connecting protrusion 122d: Screw hole 122e: First engaged part 122f: Recess for O-ring 122g: First cylindrical section 122h: Tsuba (sword guard) 123: O-ring 124: Sealing material 125: Sealing material 126: Switching Case 126a: Second mist water flow port 126b: Second shower water flow port 126c: 2nd connecting protrusion 126d: Recess for first connecting projection 126e: Recess for O-ring 126f: Second cylindrical section 126g: Mist cylinder 127: O-ring 128: Sealing material 129: Mistcoma 129a: Water hole 129b: Fitting protrusion 129c: Swirling flow path 130: Screen 130a: Mist outlet 130b: Shower spout 130c: Recess for second connecting projection 130d: Screw hole 130e: Mist Coma Containment Unit 130f: Lever 130g: Rotation restricting part 130h: 2nd engaged part 130i: Third cylindrical section 130j:Protrusion 130k: Mist cylinder housing 131: Fixing ring 131a: First engaging part 131b: Second engaging part 140: Purified water switching mechanism 141: Button 141a: Engagement part 141b: Engaged part 142: Button Guide 142a: Engagement part 142b: Engaged part 143: First switching frame 144: Raw water purification switch cover 144a: Flange section 144b: Engaging claw insertion part 145: Second switching frame 146: Switching Mobile Unit 146a: Engagement claw 146b: First cylindrical part 146c: Recess for O-ring 146d: Spring projection 146e: Second cylindrical section 147: Water-stopping ring 147a: Notch 147b: Water stop part 148: O-ring 149: Y packing 150: Spring 151: Purified water switching case 151a: Case-side water purification channel 151b: Cylindrical part 151c: Raw water channel on the case side 151d: First engaging part 151e: Spring receiving part 151f: Second engaging part 151g: Positioning protrusion 151h: Contact part 151i: Landmark 151j: Housing for purified water switching valve 151k: Upper cylindrical part 151l: Lower cylindrical section 151m: Connection part 160: Water filter cartridge section 161: O-ring 165: Upper non-woven fabric 166: Upper water filter cartridge case 166a: Engaged part 166b: Landmark 166c: Positioning projection 166d: Engagement part 167: Water filter cartridge 168: Lid 169: Lower nonwoven fabric 171: Lower water filter cartridge case 173: Strainer 174: Lower body 247: Water-stopping ring 247a: Notch for O-ring 247b: Water stop part 247c: Rib 311: Top cover 311a: Buttonhole 311b: Cylindrical section 311c: Mated part 311d: Engagement part 340: Water purification switching mechanism 341: Dial 341a: First cylindrical section 341b: Second cylindrical section 341c: Engaged part 341d: Mated part 342: Dial Guide 342a: Engaged part 342b: Flange section 342c: Fitting part 343: Switching valve 343a: First fitting part 343b: First engaging part 343c: Flange section 343d: opening 343e: Recess for packing 343f: 2nd fitting part 343g: 2nd engaging part 344: Packing 345: Purified water switching case 345a: Fitting part 345b: Switching valve housing 345c: Step section 345d: Case-side water filter port 346: Packing 347: Cap 347a: Cylindrical section 347b: Engaged part 347c: Mated part 347d:Display section 361: Adapter 361a: Mated part 430: Screen 430L: Rib 530: Screen 530j:Protrusion 630: Screen 630j:Protrusion 630m: Water entry hole 826: Switching Case 826h: Rib 826i :R structure A1: 1st area A2:Second area C: Center G: Raw water flow path J: Purified water flow path M: Mist channel S: Shower channel R: Flow velocity acceleration part F1 :Water flow F2: swirl flow F3: Vertical rotational flow

Claims

[Claim 1] A shower head that can switch between multiple water discharge patterns, A switch plate for changing the water discharge pattern. One or more switching cases having a water outlet, and Equipped with a screen having a water outlet, The switching case and the water outlet in the screen each produce water in different water discharge patterns. The water discharge surface of the screen is divided into a first region and a second region based on the distance from the center, and at least two water discharge ports with different water discharge patterns are arranged in both the first region and the second region. Shower head. [Claim 2] The switching plate, the switching case, and the screen are arranged in the direction of water discharge to form a hierarchical flow path. The shower head according to claim 1. [Claim 3] The water flows in each layer do not mix with each other. The shower head according to claim 2. [Claim 4] The aforementioned spout includes at least a shower spout and a mist spout. The shower head according to claim 3. [Claim 5] The system includes a switching valve that contacts the aforementioned switching plate, By rotating the aforementioned switching plate, the water discharge pattern is switched. The shower head according to claim 4. [Claim 6] The switching plate, the switching case, and the screen are integrated by a fixing ring to form a water discharge unit. By rotating the water discharge unit, the water discharge pattern is switched. The shower head according to claim 5. [Claim 7] The aforementioned switching case has a mist water flow port, Each of the mist water flow ports has a cylindrical mist portion that protrudes toward the screen side, The screen has a swirling flow generation mechanism housing section that houses a swirling flow generation mechanism that enables mist discharge, and a mist cylindrical housing section surrounding the swirling flow generation mechanism housing section that houses the mist cylindrical section. The mist cylinder and the mist cylinder housing are sealed. The shower head according to claim 6. [Claim 8] The switching plate has a first cylindrical portion having a circumferential surface, The switching case has a second cylindrical portion opposite to the first cylindrical portion, The screen has a third cylindrical portion opposite to the second cylindrical portion, The first cylindrical portion and the second cylindrical portion, and the second cylindrical portion and the third cylindrical portion are sealed by an elastic body. The shower head according to claim 7. [Claim 9] The screen has the shower spout, The shower outlet has a protrusion that extends in the direction of the switching case. The shower head according to claim 8. [Claim 10] Of the spaces formed between the switching case and the screen, the space at the screen inlet through which water flows from the switching case to the screen is larger than the other spaces. The shower head according to claim 9. [Claim 11] The switching case has ribs protruding in the direction of the screen, The shower head according to claim 8. [Claim 12] The rib has an R-shaped structure on the side that obstructs the flow of water. The shower head according to claim 11. [Claim 13] It includes a water passage section connected to the aforementioned switching plate, The switching plate has a flange that protrudes in the circumferential direction, The water passage section has a flange receiving section for receiving the flange, The switching plate is connected to the water pipe section by rotating it in one direction after inserting the flange into the flange receiving section. The shower head according to any one of claims 1 to 12. [Claim 14] The system includes a purified raw water switching case connected to the aforementioned water passage section. The screen has a rotation restricting section, The purified water switching case has a plurality of contact parts that come into contact with the rotation restricting part, The rotation restricting portion comes into contact with the contact portion by rotating by a predetermined amount in one direction and in the other direction, and within that predetermined range, the connection between the switching plate and the water passage portion is not released. The shower head according to claim 13. [Claim 15] A shower head that can switch between multiple water discharge patterns, A switch plate for changing the water discharge pattern. One or more switching cases having a water outlet, A screen having a water outlet, The water passage section connected to the aforementioned switching plate, The system includes a purified raw water switching case connected to the aforementioned water passage section. The switching plate has a flange that protrudes in the circumferential direction, The water passage section has a flange receiving section for receiving the flange, The screen has a rotation restricting section, The purified water switching case has a plurality of contact parts that come into contact with the rotation restricting part, The switching case and the water outlet in the screen each produce water in different water discharge patterns. The water discharge surface of the screen is divided into a first region and a second region based on the distance from the center, and at least two water discharge ports with different water discharge patterns are arranged in both the first region and the second region. The switching plate is connected to the water pipe section by rotating it in one direction after inserting the flange into the flange receiving section. The rotation restricting portion comes into contact with the contact portion by rotating by a predetermined amount in one direction and in the other direction, and within that predetermined range, the connection between the switching plate and the water passage portion is not released. This is a method for assembling a shower head. The first step is to connect the switching plate and the water passage section. A second step involves connecting the water passage section and the purified water switching case. A method for assembling a shower head.

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