Water discharge device

Abstract

To provide a water discharge device having a water stream switching unit part capable of switching a water stream, which can withstand a large load such as water pressure due to water discharge and can reduce a possibility that fixation of the water stream switching unit part is released due to erroneous use by a user.SOLUTION: A water discharge device has a head part 172 having a cylindrical structure, and a water stream switching unit part connected to an inside of the head part 172 and having a cylindrical structure, wherein bayonet structures 172d, 174a and snap-fit structures 172c, 174b are provided on the head part 172 and the water stream switching unit part, respectively, along peripheral surfaces of the cylindrical structures facing each other, and the head part 172 and the water stream switching unit part are connected by the bayonet structures 172d, 174a, and simultaneously, connection by the snap-fit structures 172c, 174b is also performed.SELECTED DRAWING: Figure 26

Description

[Technical Field]

[0001] The present invention relates to a water discharger having a water shape switching unit that can switch water shapes. [Background technology]

[0002] One example of a water discharger with a water shape switching unit that can switch water shapes is the technology disclosed in Japanese Patent Application Laid-Open No. 2003-293412 (Patent Document 1). This water discharger is structured so that the water shape switching unit (water discharge switching means 5) is fixed to the head section (water discharge section 4) by a shaft 12 with a screw mechanism located in the center of the water shape switching unit. However, in this prior art, the presence of the shaft 12 located in the center narrows the flow path of the water shape switching unit.

[0003] One example of a fixing method for a water discharger that does not narrow the flow path is the technology shown in JP 2017-036637 A (Patent Document 2). This water discharger is structured so that the head portion (spout main body 30) is fixed to the connecting tube 34 by a snap fit connection to the decorative cover 27 and by connection with clips 29. With this conventional technology, the snap fit connection alone is not able to withstand large loads such as the water pressure caused by water discharge, so by also using connection with clips 29, it is possible to withstand large loads. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-293412 [Patent Document 2] Japanese Patent Application Publication No. 2017-036637 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in this conventional technology, the connection point of the clip 29 is exposed to the outside, which makes it less aesthetically pleasing, and there is a risk that the connection by the clip 29 will be released and the head part will come off if the user uses it incorrectly.

[0006] The present invention has been proposed in consideration of these problems, and aims to provide a water discharge device having a water shape switching unit that can switch the water shape, which can withstand large loads such as water pressure caused by water discharge, and which can reduce the possibility of the water shape switching unit becoming unlocked due to misuse by the user. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention has the following features.

[0008] (Feature Configuration 1) The characteristic configuration of the water discharge device according to the present invention is as follows: A water discharger having a head portion having a cylindrical structure and a water shape switching unit portion connected to the inside of the head portion and having a cylindrical structure, The head portion and the water-type switching unit portion are provided with a bayonet structure and a snap-fit ​​structure along the circumferential surface of the cylindrical structure that faces each other, The head part and the water-type switching unit part are connected by the bayonet structure, and at the same time, the connection is also made by the snap-fit ​​structure. It's at the point.

[0009] (Effect 1) With this configuration, even if a force is applied to the water-shaped switching unit in a direction that would release the bayonet structure, the connection between the head part and the water-shaped switching unit can be prevented from being released because of the snap-fit ​​structure.

[0010] (Feature Configuration 2) The water discharge device according to the present invention includes: the bayonet structure has a first groove extending in an axial direction; The water discharge direction of the water type switching unit and the direction of the first groove are the same. may be.

[0011] (Effect 2) With this configuration, when the head member and the water-shaped switching unit are connected, the bayonet structure restricts the movement of the water-shaped switching unit in the water discharge direction, thereby improving durability against pressure in the water discharge direction.

[0012] (Feature Configuration 3) The water discharge device according to the present invention includes: The bayonet structure is provided in two positions approximately 180 degrees apart on the circumferential surface of the cylindrical structure, The snap-fit ​​structure is provided in two positions spaced approximately 90 degrees apart from the bayonet structure; may be.

[0013] (Effect 3) With this configuration, the snap fit structure is as far away from the bayonet structure as possible in the circumferential direction, so that force is more easily applied to the snap fit structure position, with the bayonet structure position, where movement in the water discharge direction is more tightly restricted, as the fulcrum, making it easier for the snap fit structure to fit.

[0014] (Feature Configuration 4) The water discharge device according to the present invention includes: The water type switching unit switches the water type by rotating it in the circumferential direction. may be.

[0015] (Effect 4) By adopting such a configuration, it is possible to reduce the pressure loss during water-type switching and to make the water-type switching unit smaller.

[0016] (Feature Configuration 5) The water discharge device according to the present invention includes: a cover member for covering the head portion; may be.

[0017] (Effect 5) With this configuration, the connection portions formed by the bayonet structure and the snap-fit ​​structure are not exposed to the outside, so that the connection between the two structures can be effectively prevented from being released.

[0018] (Feature Configuration 6) The water discharge device according to the present invention includes: a stay that is fixed to another member, rotates around the other member as an axis, and has a holding portion at a tip thereof that holds the head portion; The holding portion is shaped so that the head portion does not come off when the stay is rotated. may be.

[0019] (Effect 6) With this configuration, the head unit can be easily moved and is held in place at the destination, improving convenience.

[0020] (Feature Configuration 7) The water discharge device according to the present invention includes: The holding portion is configured in a hook shape having a flat portion, the head portion has a groove having a shape corresponding to the flat portion and into which the holding portion is inserted; may be.

[0021] (Effect 7) With this configuration, even if a circumferential rotation operation is applied to the water type switching unit when switching the water type, the holding part can prevent the head member from rotating with it, thereby improving convenience.

[0022] (Feature Configuration 8) The method for assembling the water discharge device according to the present invention includes the following steps: A water discharger having a head portion having a cylindrical structure and a water shape switching unit portion connected to the inside of the head portion and having a cylindrical structure, The head portion and the water-type switching unit portion are provided with a bayonet structure and a snap-fit ​​structure along the circumferential surface of a cylindrical structure, respectively; The head portion and the water-type switching unit portion are connected by the bayonet structure, and at the same time, the connection is also made by the snap-fit ​​structure, A cover member for covering the head portion is provided. A method for assembling a water discharge device, comprising: a first step of attaching the cover member to the head portion from below; A second step of inserting the water-type switching unit from below into the cylindrical structure of the head portion; and a third step of rotating the water-type switching unit to connect the water-type switching unit using the bayonet structure and the snap-fit ​​structure; having may be.

[0023] (Effect 8) By using such a process, the water discharge device can be assembled through a simpler process. [Brief explanation of the drawings]

[0024] [Figure 1] A perspective view showing the appearance of the faucet [Figure 2] Front view of the faucet [Figure 3] Right side view of the faucet [Figure 4] An exploded perspective view showing the main components of the faucet [Figure 5] Schematic diagram showing the flow path inside the faucet body [Figure 6] FIG. 1( a ) is a perspective view showing the configuration of the lower end of the upper body of the faucet body, and FIG. 1( b ) is a perspective view showing the configuration of the upper end of the upper body of the faucet body. [Figure 7] (a) is a cross-sectional view of the faucet in Figure 2 taken along line AA, (b) is a cross-sectional view of the faucet in Figure 2 taken along line BB, and (c) is a cross-sectional view of the faucet in Figure 2 taken along line CC. [Figure 8] FIG. 1 is an exploded perspective view showing the main components of the swing angle regulation structure on the front side. [Figure 9] FIG. 1 is an exploded perspective view showing the main components of the swing angle regulation structure on the rear side. [Figure 10] Cross section of the swing angle control structure shown in Figure 2, line DD [Figure 11] (a) is a plan view of the faucet body cover, and (b) is a cross-sectional view of the faucet body cover in (a) along the line EE. [Figure 12] Cross section of the swing angle control structure shown in Figure 2, line FF [Figure 13] An exploded perspective view showing the main components of the water intrusion prevention structure. [Figure 14] A perspective view showing the main components around the piping [Figure 15] Cross section of the water intrusion prevention structure along line GG in Figure 3 [Figure 16] Plan view showing the structure of two split packings joined together [Figure 17] (a) is a left side view of the split packing, (b) is a plan view of the split packing, and (c) is a right side view of the split packing. [Figure 18] Cross section of the faucet in Figure 2, line DD [Figure 19] A diagram showing how to connect the flexible hose to the faucet body. [Figure 20] Diagram showing how to connect the flexible hose to the shower head [Figure 21] An exploded perspective view showing the main components of a shower head [Figure 22] Cross section of the shower head shown in Figure 2 along line DD [Figure 23] (a) is a front view of the head, and (b) is a cross-sectional view of the head taken along line HH in (a). [Figure 24] (a) is a right side view of the head section, and (b) is a cross-sectional view of the head section taken along line II in (a). [Figure 25] (a) is a front view of the water-type switching unit, and (b) is a right side view of the water-type switching unit in (a). [Figure 26] FIG. 10 is a perspective view showing the connection structure between the head section and the water-type switching unit section. [Figure 27](a) is a right side view of the head unit and the head unit cover attached to the head unit, (B) is a cross-sectional view of the head unit and the head unit cover attached to the head unit in (a) along the JJ line. [Figure 28] (a) is a cross-sectional view of the positioning structure in Figure 3 taken along line KK, and (b) is a cross-sectional view of the head part in Figure 24(a) taken along line LL. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each embodiment is not independent from the others, and those skilled in the art can appropriately combine them without needing to explain them in detail, and can also understand the synergistic effects of such combinations. In principle, overlapping explanations between embodiments will be omitted.

[0026] In addition, in the embodiment of the present invention, the directions are defined as follows. As shown in Figures 2 and 3, the front-to-rear direction is the direction in which a stay 135 (described later) extends in Figure 3, the up-down direction is the direction in which a pipe 153 (described later) extends in Figure 3, and the left-to-right direction is the direction perpendicular to the front-to-rear direction and the up-down direction, as shown in Figure 2. Also, the view of the faucet 100 as seen from the front, as shown in Figure 2, is defined as a front view. Note that the directions may be redefined using different expressions based on the disclosure of the entire present application.

[0027] [Embodiment] 〔overview〕 An embodiment of a faucet 100 according to the present invention will be described with reference to the drawings. As shown in Figures 1 to 4, this faucet 100 is mainly composed of six structures. The first is the faucet main body 110 to which one end of the pipe 153 is connected. The second is a swing angle regulation structure 130 that is connected to the upper part of the faucet main body 110. The third is a water intrusion prevention structure 150 that is connected to the lower part of the faucet main body 110. The fourth is a flexible hose 160 having one end connected to the upper part of the swing angle regulation structure 130 . The fifth is a shower head 170 connected to the other end of the flexible hose 160 . The sixth is a positioning structure 190 that is connected to the showerhead 170 .

[0028] The specific structures of the faucet main body 110, swing angle restriction structure 130, water intrusion prevention structure 150, flexible hose 160, shower head 170, and positioning structure 190 will be described below.

[0029] [Faucet main body 110] As shown in Figure 4, the faucet main body 110 is mainly composed of an upper body 111 to which one end of the piping 153 is connected, a water discharge / stop and hot / cold water mixing valve 112 provided on the right side of the upper body 111, a purified raw water switching valve 113 provided on the left side of the upper body 111, a water purification cartridge 114 provided at the left end of the upper body 111, a faucet main body cover 120 that covers the upper body 111, and a water purification cartridge cover 121 that covers the water purification cartridge 114.

[0030] As shown in Figures 6(a) and 6(b), the upper body 111 is composed of a water supply inlet 111a connected to one end of the water supply pipe 153a described later, a hot water supply inlet 111b connected to one end of the hot water supply pipe 153b described later, a mixed water and purified water outlet 111c connected to one end of the shaft 131 (corresponding to a "rigid pipe") described later, and as shown in Figures 5 and 7(a) to 7(c), a hot water supply flow path 111d through which fluid from the hot water supply inlet 111b passes, a water supply flow path 111e through which fluid from the water supply inlet 111a passes, a mixed water flow path 111f through which mixed water mixed by the water discharge / stop and hot and cold water mixing valve 112 passes, and a purified water flow path 111g through which purified water purified by the water purification cartridge 114 passes. As shown in FIG. 15, the upper body 111 also has packings 111i and 111j for preventing water from entering the faucet body 110 from the outside, and a screw hole 111h for connection with a screw 154, which will be described later.

[0031] The water discharge / stop and hot / cold water mixing valve 112 need only be capable of controlling the discharge / stop of fluid from the hot water supply flow path 111d and the cold water supply flow path 111e, and adjusting the mixing amount and mixing ratio of the fluid from the hot water supply flow path 111d and the cold water supply flow path 111e, and as a general or well-known valve can be used, a description thereof will be omitted.

[0032] The water purification cartridge 114 may be any cartridge capable of purifying the mixed water from the mixed water flow path 111f, and a general or well-known cartridge may be used, so a description thereof will be omitted.

[0033] The purified raw water switching valve 113 need only be capable of switching between mixed water from the mixed water flow path 111f and purified water from the purified water flow path 111g, and a general or well-known valve can be used, so its description will be omitted.

[0034] As shown in Figures 4, 11(a), and 11(b), the faucet body cover 120 is composed of a lower shaft cover 120a that covers the lower part of the shaft 131 described later, a protrusion 120b that contacts a notch 132a in an inner cover member 132 described later as part of the swing angle control structure 130 described later, an upper body cover part 120c that covers the upper body 111, a notch 120d for positioning the purified raw water switching valve 113, and a lower body cover part 120e that covers the lower body 151 described later.

[0035] The material for the faucet body cover 120 can be zinc alloy, brass, ABS (acrylonitrile, butadiene, styrene copolymer synthetic resin), or PA (polyamide resin), with ABS or PA being preferred because it does not require a mirror finish by so-called buffing, and PA being particularly preferred because it is strong.

[0036] As shown in Figure 4, the water purification cartridge cover 121 is composed of an opening 121a for placing the purified raw water switching valve 113, a first cover part 121b that covers the water purification cartridge 114 from the front, and a second cover part 121c that covers the water purification cartridge 114 from the rear.

[0037] [Swing angle regulation structure 130] As shown in Figures 4 and 11, the swing angle control structure 130 is mainly composed of an inner cover member 132 that is rotatably mounted on the outer periphery of the shaft 131 connected to the mixed water and purified water outlet 111c of the upper body 111, and a protrusion 120b of the shaft lower cover 120a (corresponding to the "outer cover member" and "fixing member") that is mounted on the outer periphery of the inner cover member 132 and mounted above the faucet body cover 120. Here, the shaft 131, washer 133, and shaft upper cover 134 (corresponding to the "outer cover member" and "rotating member"), which are closely related to the movement of the swing angle restriction structure 130, will also be described.

[0038] As shown in Figures 8 to 11, the shaft 131 is connected to the mixed water and purified water outlet 111c of the upper main body 111, and is mainly composed of a fitting receiving portion 131c at the upper end of the shaft 131 into which the faucet main body side fitting 163 described later is inserted, a flange portion 131h below the fitting receiving portion 131c to prevent the washer 133 from slipping out upward, restriction ring recesses 131a and 131b below the flange portion 131h into which restriction rings 131e and 131f are attached to prevent rattling due to the gap with the inner cover member 132 located on the outer periphery, a gasket recess 131i below the restriction ring recess 131b into which a gasket 131g is attached to fill the gap with the shaft lower cover 120a, and a screw 131j at the lower end of the shaft 131 for screwing into the mixed water and purified water outlet 111c of the upper main body 111. As shown in FIG. 9, the metal fitting receiving portion 131c is provided with an opening 131d for receiving a C-ring 163d for fixing the faucet body side metal fitting 163.

[0039] The material of the shaft 131 can be metal, particularly stainless steel (SUS), brass, or bronze, with brass or bronze being preferred to improve adhesion to the upper body 111 of the faucet body 110, for which brass is used, and brass being particularly preferred for its ease of processing and low cost. The shaft 131 can also be made of resin if sufficient strength can be ensured.

[0040] The regulating rings 131e and 131f attached to the regulating ring recess 131a not only regulate rattling caused by the gap between the shaft 131 and the inner cover member 132, but also have the function of reducing the sliding resistance between the shaft 131 and the inner cover member 132.

[0041] The packing 131g fitted in the packing recess 131i has the function of preventing water from entering the shaft lower cover 120a through the gap between the shaft 131 and the shaft lower cover 120a, and also prevents the shaft 131 from loosening due to sliding resistance.

[0042] As shown in Figures 8 to 11, the length of the inner cover member 132 in the vertical direction is approximately the same as that of the shaft 131, and it is rotatably provided on the outer periphery of the shaft 131. It is mainly composed of a screw hole 132d that is coupled to a screw 134b that regulates the vertical movement of the shaft upper cover 134 described later, a fitting protrusion 132e that is provided below the screw hole 132d and fits into a fitting recess 134c provided in the shaft upper cover 134 to link the rotational movement of the shaft upper cover 134 and the rotational movement of the inner cover member 132, an interference member 132f that is provided below the fitting protrusion 132e and is located between the shaft upper cover 134 and the shaft lower cover 120a, and a notch 132a that is provided on the lower side of the interference member 132f and comes into contact with a protrusion 120b of the shaft lower cover 120a. As shown in FIG. 8, the lower end of the notch 132a is open.

[0043] The material for the inner cover member 132 can be zinc alloy, brass, ABS (acrylonitrile, butadiene, styrene copolymer synthetic resin), or PA (polyamide resin), with ABS or PA being preferred because they do not require a mirror finish by so-called buffing, and PA being particularly preferred because of its strength.

[0044] As shown in Figure 10, the washer 133 is arranged between the inner cover member 132 and the flange portion 131h of the shaft 131, and functions as a locking device when threading the shaft 131 to the mixed water and purified water outlet 111c of the upper body 111.

[0045] As shown in Figures 8 to 10, shaft upper cover 134 is arranged on the outer periphery of inner cover member 132 and is mainly composed of a stay 135 that is provided in front of shaft upper cover 134 and holds shower head 170, which will be described later, and also functions as a guide when the user changes the position of shower head 170; a hole 134a that is provided in the rear of shaft upper cover 134 and through which a screw 134b is inserted to regulate the up and down movement of shaft upper cover 134; and a fitting recess 134c that is provided below hole 134a and fits into fitting protrusion 132e of inner cover member 132 to link the rotational movement of shaft upper cover 134 and inner cover member 132. Furthermore, the lower end of the shaft upper cover 134 abuts against the interference member 132 f of the inner cover member 132 .

[0046] As shown in Figures 10 to 12, the protrusion 120b is provided on the lower side surface of the shaft lower cover 120a provided above the faucet body cover 120, and has a predetermined length in the vertical direction to improve the rigidity of the shaft lower cover 120a itself.

[0047] Because the swing angle regulation structure 130 has this configuration, for example, when a user rotates the stay 135 to change the position of the shower head 170, the swing angle of the stay 135 can be regulated within a predetermined range. Specifically, because the mating recess 134c and the mating protrusion 132e of the inner cover member 132 are connected, when the stay 135 is rotated, the notch 132a of the inner cover member 132 also rotates. Therefore, if an attempt is made to rotate the stay 135 beyond a certain range, as shown in Figure 12, the notch 132a of the inner cover member 132 comes into contact with the protrusion 120b of the shaft lower cover 120a, and the movement of the stay 135 is restricted.

[0048] The swing angle restriction range can be adjusted, for example, by changing the circumferential width of the notch 132a in the inner cover member 132. However, making the circumferential width of the notch 132a too large is undesirable because it makes the portion of the notch 132a that comes into contact with the protrusion 120b more susceptible to breakage. Also, since there are generally few opportunities to rotate the stay 135 beyond the range of a sink, washbasin, or the like that receives water from the shower head 170, it is preferable to limit the swing angle restriction range to the range of the sink, washbasin, or the like. The swing angle restriction range may have several patterns within the range of the sink, washbasin, or the like. For example, if the faucet 100 is installed in the center of the sink in the left-right direction, there may be a first pattern that restricts the swing angle to a range of 120 degrees (60 degrees left and right) with the shower head 170 facing forward as the origin; a second pattern that restricts the swing angle to a range of 80 degrees (40 degrees left and right); if the faucet 100 is installed on the right side of the sink in the left-right direction, there may be a third pattern that restricts the swing angle to a range of 85 degrees (75 degrees left, 10 degrees right) with the shower head 170 facing forward as the origin; and if the faucet 100 is installed on the left side of the sink in the left-right direction, there may be a fourth pattern that restricts the swing angle to a range of 85 degrees (10 degrees left, 75 degrees right) with the shower head 170 facing forward as the origin.

[0049] Furthermore, because the swing angle control structure 130 has this configuration, the swing angle is controlled by a member separate from the shaft 131, which is the water passage member, and therefore the impact caused by contact during swing angle control can be prevented from loosening the joint between the shaft 131 and the faucet main body 110, thereby preventing water leakage. Furthermore, with this configuration, the exterior component is no longer the shaft 131, which is the water passage component, so even if the exterior component has been plated, the possibility of metals such as nickel leaching from the plated portion into the shaft 131 can be reduced.

[0050] Furthermore, because shaft 131 is made of metal, inner cover member 132 is made of resin, and shaft 131 and inner cover member 132 have approximately the same length in the vertical direction, even when hot water passes through shaft 131, inner cover member 132 can make it difficult for heat to be transferred to shaft lower cover 120a and shaft upper cover 134. This reduces the possibility that a user will be burned by touching shaft lower cover 120a and shaft upper cover 134.

[0051] Furthermore, since the swing angle restriction structure 130 is configured by the notch 132a and the protrusion 120b, the swing angle restriction structure 130 can be provided with a simpler configuration.

[0052] Furthermore, since the protrusion 120b constituting the swing angle restriction structure 130 is formed by the shaft lower cover 120a, which is part of the faucet body cover 120, the swing angle restriction structure 130 can be provided with a simpler configuration.

[0053] Furthermore, the inner cover member 132 has an interference member 132f positioned between the shaft upper cover 134 and the shaft lower cover 120a, which prevents the outer cover members (corresponding to the "shaft upper cover 134" and the "shaft lower cover 120a") that constitute the exterior components that may be plated from rubbing against each other. Furthermore, with this configuration, there is no need to provide the interference member 132f as a separate member from the inner cover member 132, etc., and therefore it is possible to effectively prevent forgetting to attach the interference member 132f.

[0054] Furthermore, the protrusion 120b that constitutes the swing angle restriction structure 130 is provided on the lower side surface of the shaft lower cover 120a, and the cutout 132a is provided on the lower side surface of the inner cover member 132 with an open lower end, so that the protrusion 120b can improve the rigidity of the shaft lower cover 120a itself. Furthermore, with this configuration, the swing angle restriction structure 130 can be provided simply by attaching the inner cover member 132 from above.

[0055] Next, a method for assembling the swing angle restriction structure 130 will be described. The assembly method of the swing angle regulation structure 130 includes the following steps: a first step of attaching the faucet body cover 120 from the right side of the faucet body 110; a second step of attaching the inner cover member 132 from below the shaft 131; a third step of passing the shaft 131 with the inner cover member 132 attached inside the shaft lower cover 120a of the faucet body cover 120 from above; a fourth step of fixing the shaft 131 with the inner cover member 132 attached to the faucet body 110 so that the protrusion 120b of the shaft lower cover 120a faces the notch 132a of the inner cover member 132; a fifth step of attaching the shaft upper cover 134 around the inner cover member 132 from above; and a sixth step of fixing the inner cover member 132 and the shaft upper cover 134 together with screws 134b.

[0056] Regarding the first step, as shown in FIG. 11, the faucet body cover 120 has a cutout 120d that is open on the left side for positioning the purified raw water switching valve 113, so that the faucet body cover 120 can be attached from the right side of the faucet body 110.

[0057] 8, the inner cover member 132 is attached to the shaft 131 from below with the cutout 132a of the inner cover member 132 facing downward. The attached inner cover member 132 does not come off upward due to the flange portion 131h of the shaft 131. In addition, it is preferable to attach the washer 133 to the shaft 131 from below before attaching the inner cover member 132.

[0058] 11 and 12, in the third step, because the protrusions 120b that constitute the swing angle restriction structure 130 are provided on the shaft lower cover 120a of the faucet body cover 120, the shaft 131 to which the inner cover member 132 is attached must be passed through the inside of the shaft lower cover 120a. Also, by passing the shaft 131 through the inside of the shaft lower cover 120a, the faucet body cover 120 can be prevented from coming off the faucet body 110.

[0059] Regarding the fourth step, as shown in Figure 8, the notch 132a of the inner cover member 132 is provided on the lower side surface of the inner cover member 132 and is configured so that the lower end is open.Furthermore, since the notch 132a has a predetermined width in the circumferential direction, when the shaft 131 to which the inner cover member 132 is attached is fixed to the faucet main body 110, the protrusion 120b of the shaft lower cover 120a and the notch 132a of the inner cover member 132 can be easily positioned so that they face each other.

[0060] Regarding the fifth step, as shown in FIG. 9, the fitting recess 134c of the shaft upper cover 134 is provided on the lower side surface of the shaft upper cover 134 and has an open lower end, so that the shaft upper cover 134 can be easily attached around the inner cover member 132 from above.

[0061] In the sixth step, as shown in FIG. 9, the screw holes 132d of the inner cover member 132 and the shaft upper cover 134 are fixed with the screws 134b, so that the up and down movement of the shaft upper cover 134 can be restricted.

[0062] The method for assembling the swing angle restriction structure 130 includes such steps, and therefore the swing angle restriction structure 130 can be provided through simpler steps.

[0063] [Water intrusion prevention structure 150] The water intrusion prevention structure 150 is a structure designed to prevent water leaking from the purified water switching valve 113, which is difficult to completely seal, from running down the faucet main body 110, or water adhering to the faucet main body 110 when the faucet 100 is in use, from running down the faucet main body 110 and entering the storage space in which the faucet is installed.As shown in Figures 13 to 15, it is composed of a gasket 111i that fills the gap between the upper body 111 and the upper body cover part 120c, a gasket 111j that fills the gap between the water stop and hot and cold water mixing valve 112 and the upper body cover part 120c, a screw 154 that prevents water running down from the upper body 111 from entering the lower body 151, and a split gasket 155 that prevents water leaking from the water supply inlet 111a and the hot water supply inlet 111b, or water running down the upper body 111, from entering the lower body 151. Here, the lower body 151 and the piping 153, which are closely related to the water intrusion prevention structure 150, will also be described.

[0064] The gaskets 111i and 111j may be any gasket that can fill gaps and prevent water from entering, and general or well-known gaskets may be used, so a description thereof will be omitted.

[0065] The screws 154 fix the lower body 151 to the upper body 111 and have the function of preventing water that has trickled down from the upper body 111 from entering the lower body 151, and as shown in Fig. 15, the screws 154 are inserted through screw receiving portions 151a of the lower body 151 and connected to threaded holes 111h provided in the upper body 111. If it is difficult to prevent water that has trickled down from the upper body 111 from entering the lower body 151 using only the screws 154, the screws may be connected to the threaded holes 111h via a known flat packing or the like.

[0066] As shown in Figures 14 and 15, split gasket 155 (corresponding to "sealing member") simultaneously clamps water supply pipe 153a and hot water supply pipe 153b and is pressed into storage section 151b of lower main body 151, thereby preventing water leakage from water supply inlet 111a and hot water supply inlet 111b and water running down upper main body 111 from entering lower main body 151.

[0067] With this configuration, the pipe 153 can be sandwiched between the sealing members divided into multiple pieces, and assembly can be performed without pulling the sealing members. Furthermore, with this configuration, the seal is provided at a separate part from the seal (packing 153c, etc.) of the pipe 153 that constitutes the water passage, so split packing 155 is positioned so that water pressure is not applied, and the crushing allowance can be set without considering water pressure, improving assembly. Also, because it is a separate part from the seal (packing 153c, etc.) of the pipe 153 that constitutes the water passage, there is no need to consider materials such as chlorine resistance, and if the sealing is poor, sealing grease can be applied (even if sealing grease is applied, the grease will not flow into the water passage). Furthermore, with this configuration, it is no longer necessary to attach a seal member to each of the cold water supply pipe 153a and the hot water supply pipe 153b, thereby improving the ease of assembly.

[0068] As shown in Figures 16 and 17, split gasket 155 is composed of a first split member 155b and a second split member 155c that are split into two parts sandwiching piping 153, and first split member 155b and second split member 155c are composed of the same shape. With this configuration, first divided member 155b and second divided member 155c can be manufactured using a common manufacturing process, thereby reducing manufacturing costs.

[0069] As shown in Figure 17, the split gasket 155 has lip seal portions 155a on its inner surface, outer surface, and / or split surface, and when the first split member 155b and the second split member 155c are connected, the lip seal portions 155a are continuous without overlapping on the inner surface, outer surface, and / or split surface. 17(a) to 17(c), the first divided member 155b has a lip seal portion 155a provided over the entire inner and outer peripheral surfaces at the vertical center. As shown in Fig. 17(c), the first divided surface 155d of the first divided member 155b has the lip seal portion 155a provided over the entire front-to-rear direction at the vertical center, the second divided surface 155e has the lip seal portion 155a provided over half the front-to-rear direction at the vertical center, and the third divided surface 155f has no lip seal portion 155a.

[0070] With this configuration, the area that comes into contact with the component to be sealed (accommodating portion 151b) is not a flat surface, which reduces the press-fitting force when pressing split gasket 155 into accommodating portion 151b, improving assembly ease. Furthermore, with this configuration, even if there are defects such as scratches or dirt in the portion of the member to be sealed (housing portion 151b) that does not come into contact with the lip seal portion 155a, this does not affect the seal performance. In other words, the seal surface control range of the member to be sealed (housing portion 151b) can be narrowed, which reduces the manufacturing cost of the member to be sealed (housing portion 151b). Furthermore, with this configuration, when first divided member 155b and second divided member 155c are connected, it is possible to prevent the lip seal portions 155a from overlapping and creating a gap.

[0071] In addition, the second divided member 155c, which is arranged in the same orientation as the first divided member 155b, is configured so that the dividing surface coincides with that of the first divided member 155b by rotating one side 180 degrees around the vertical axis, as shown in Figure 16. More specifically, as shown in FIG. 16, the first divided member 155b and the second divided member 155c are not divided into two at the center position in the left-right direction as a whole, but rather the second divided surface 155e is divided into two at the center position in the left-right direction, the first divided surface 155d is divided into two to the left of the center position in the left-right direction, and the third divided surface 155f is divided into two to the right of the center position in the left-right direction. If first divided member 155b and second divided member 155c were divided into two at the center in the left-right direction, for example, even if second divided member 155c, which is aligned in the same direction as first divided member 155b, were rotated 180 degrees about the left-right axis so that the lip seal portions 155a overlap (a situation that risks creating a gap), first divided member 155b and second divided member 155c would still be able to connect (the divided surfaces would connect). However, by rotating one of them 180 degrees about the vertical axis so that the divided surfaces coincide, first divided member 155b and second divided member 155c would not be able to connect when the lip seal portions 155a overlap, thereby reducing the chances of incorrect connections.

[0072] The material for the split gasket 155 can be EPDM (ethylene propylene diene rubber), NBR (nitrile rubber), silicone, elastomer, or fluororubber, with EPDM or silicone being preferred because they have a small compression set and can be easily produced with low hardness, and EPDM is particularly preferred for cost reasons.

[0073] The lower body 151 (corresponding to the "tubular portion") is attached below the upper body 111, and as shown in Figures 13 and 15, is composed of a screw receiving portion 151a at its upper end through which a screw 154 is inserted, an insertion hole 151c at the same upper end through which a water supply pipe 153a and a hot water supply pipe 153b are inserted, an accommodating portion 151b provided around the insertion hole 151c and accommodating a split gasket 155, and a connecting portion provided at the lower end of the lower body 151 for connecting to a piping cover 152.

[0074] Piping 153 is made up of water supply piping 153a and hot water supply piping 153b, and is provided with a flange 153e at its upper part, as shown in Figures 14 and 15. The upper part of flange 153e is connected to water supply inlet 111a and hot water supply inlet 111b of upper main body 111, and therefore is fitted with a plurality of gaskets 153c and a plurality of spacers 153d to prevent water leakage, etc. Then, a fixing bracket 153f is fitted below flange 153e to fix piping 153 to upper main body 111, and a split gasket 155 is fitted below fixing bracket 153f.

[0075] Next, a method for assembling the water intrusion prevention structure 150 will be described. The assembly method of the water intrusion prevention structure 150 includes a first step of connecting the piping 153 from below the faucet body cover 120 attached to the faucet body 110, a second step of attaching a split gasket 155 to the piping 153, and a third step of attaching the lower body 151 to the upper body 111 from below the faucet body cover 120.

[0076] 6, 14, and 15, water supply pipe 153a and hot water supply pipe 153b have flanges 153e at their tops, and fixing brackets 153f are attached below flanges 153e of water supply pipe 153a and hot water supply pipe 153b, and with multiple gaskets 153c and spacers 153d attached above flanges 153e of the two pipes 153, they are connected to water supply inlet 111a and hot water supply inlet 111b of upper main body 111. Thereafter, water supply pipe 153a and hot water supply pipe 153b are fixed to upper main body 111 with screws 153g.

[0077] Regarding the second step, as shown in FIG. 15, a split gasket 155 is attached below the flange 153e of the water supply pipe 153a. Since the split gasket 155 is split into two pieces, the water supply pipe 153a and the hot water supply pipe 153b can be simultaneously clamped between the fixed pipes 153 from the left and right directions.

[0078] 6, 13, and 15, after the lower ends of the water supply pipe 153a and the hot water supply pipe 153b are passed through the insertion holes 151c of the lower body 151, the lower body 151 is lifted upward, and the split gasket 155 attached in the second step is press-fitted into the accommodating portion 151b. Thereafter, the screw 154 is inserted into the screw receiving portion 151a of the lower body 151 and attached to the screw hole 111h of the upper body 111, thereby attaching the lower body 151 to the upper body 111.

[0079] By using such steps for the assembly method of the water intrusion prevention structure 150, the water intrusion prevention structure 150 can be provided through simpler steps.

[0080] [Flexible Hose 160] As shown in Figures 18 to 20, the flexible hose 160 is composed of an inner hose 161, an outer hose 162 that covers the inner hose 161, a faucet body side fitting 163 that is connected to one end of the inner hose 161 and attached to the fitting receiving portion 131c of the shaft 131, and a shower head side fitting 164 that is connected to the other end of the inner hose 161 and attached to the fitting receiving portion 171a of the water flow pipe 171.

[0081] The inner hose 161 may be any type that functions as a water passage and is elastically deformable, and a general or known type may be used, so a description thereof will be omitted.

[0082] The outer hose 162 may be any type that can be elastically deformed, and a general type or a known type may be used, so a description thereof will be omitted. It is also possible to place a metal or the like having a shape memory function between the inner hose 161 and the outer hose 162. With this configuration, it becomes easier to return the flexible hose 160 to its original state after it has been moved, improving convenience.

[0083] As shown in Figure 19(a), the faucet body side fitting 163 is composed of a C-shaped ring receiving portion 163a above the faucet body side fitting 163, into which the C-shaped ring 163d is fitted, and a packing receiving portion 163b and a packing receiving portion 163c below the C-shaped ring receiving portion 163a, into which packings 163e and 163f are attached.

[0084] As shown in FIG. 20(a), the shower head side fitting 164 is composed of a C-ring receiving portion 164a, on the upper side of the shower head side fitting 164, into which a C-ring 164d is fitted, and a packing receiving portion 164b and a packing receiving portion 164c, on which packings 164e and 164f are attached, below the C-ring receiving portion 164a.

[0085] Next, a method for connecting the flexible hose 160 to the faucet main body 110 and the shower head 170 will be described. The method of connecting the flexible hose 160 and the faucet main body 110 includes a first step of inserting the faucet main body side fitting 163 attached to the inner hose 161 into the fitting receiving portion 131c, a second step of fixing the inserted faucet main body side fitting 163 with a C-shaped ring 163d, a third step of attaching the outer hose 162 to the inner hose 161, and a fourth step of attaching the decorative cover 136 to the upper end of the shaft upper cover 134.

[0086] Regarding the first step, as shown in Figure 19(a), the lower end of the fitting receiving portion 131c has a step that narrows inward, so that when the faucet body side fitting 163 attached to the inner hose 161 is inserted into the fitting receiving portion 131c, the faucet body side fitting 163 does not move downward more than necessary. Furthermore, when the faucet body side fitting 163 is inserted into the fitting receiving portion 131c, the opening 131d provided on the side of the fitting receiving portion 131c and the C-shaped ring receiving portion 163a of the faucet body side fitting 163 overlap.

[0087] Regarding the second step, as shown in Figure 19(b), in the first step, the opening 131d provided on the side of the fitting receiving portion 131c and the C-shaped ring receiving portion 163a of the faucet body side fitting 163 overlap, so that the C-shaped ring 163d can be inserted from the side of the opening 131d and attached to the C-shaped ring receiving portion 163a.

[0088] Regarding the third step, as shown in FIG. 19(c), the outer hose 162 is attached to the inner hose 161 by covering one end of the outer hose 162 from the other end side (shower head 170 side) of the inner hose 161 until it abuts against the shaft 131.

[0089] Regarding the fourth step, as shown in Figure 19(d), the decorative cover 136 is attached to the upper end of the shaft upper cover 134 by moving the decorative cover 136 from the other end side (shower head 170 side) of the outer hose 162 until it abuts the upper end of the shaft upper cover 134. By attaching the decorative cover 136, one end of the outer hose 162 is hidden from view from the outside, improving the design of the faucet 100.

[0090] The method of connecting the flexible hose 160 and the shower head 170 includes a first step of inserting the shower head side fitting 164 attached to the inner hose 161 into the fitting receiving portion 171a, and a second step of fixing the inserted shower head side fitting 164 with a C-shaped ring 164d.

[0091] Regarding the first step, as shown in FIG. 20(a), the lower end of the fitting receiving portion 171a has a step that narrows inward, so that when the shower head side fitting 164 attached to the inner hose 161 is inserted into the fitting receiving portion 171a, the shower head side fitting 164 does not move downward more than necessary. Furthermore, when the shower head side fitting 164 is inserted into the fitting receiving portion 171a, the opening 171b provided on the side of the fitting receiving portion 171a and the C-ring receiving portion 164a of the shower head side fitting 164 overlap. In the first step, it is preferable to move the other end of the outer hose 162 upward relative to the inner hose 161 so that it does not get in the way when performing the work.

[0092] Regarding the second step, as shown in FIG. 20(b), in the first step, the opening 171b provided on the side of the fitting receiving portion 171a overlaps with the C-ring receiving portion 164a of the shower head side fitting 164, so that the C-ring 164d can be inserted from the side of the opening 171b and attached to the C-ring receiving portion 164a. Then, after the C-shaped ring 164d is attached to the C-shaped ring receiving portion 164a, the other end of the outer hose 162, which had been moved upward, is returned to its original state, thereby completing the connection between the flexible hose 160 and the shower head 170. As shown in FIG. 20(b), the other end of the outer hose 162 is covered by the upper end of the head portion 172 and is not visible from the outside, improving the design of the faucet 100.

[0093] [Shower Head 170] As shown in Figures 21 and 22, the shower head 170 (corresponding to the "water discharge device") is mainly composed of a water pipe 171 to which the other end of the flexible hose 160 is connected, a head section 172 that covers the water pipe 171, a head section cover 173 that covers the bottom of the head section 172, and a water type switching unit section 174.

[0094] As shown in Figures 21 and 22, the water pipe 171 is composed of a metal fitting receiving portion 171a provided above the water pipe 171, an opening 171b provided on the side of the metal fitting receiving portion 171a, and a step 171c provided below the water pipe 171. The metal fitting receiving portion 171a and the opening 171b have already been described in the method of connecting the flexible hose 160 and the shower head 170, so a description thereof will be omitted. The step 171c engages with an E-ring 172b attached to an E-ring opening 172a of the head portion 172, which will be described later, and restricts downward movement of the head portion 172.

[0095] The materials that can be used for the components that make up the water pipe 171 include copper alloys (bronze, brass, gunmetal, etc.), stainless steel, etc., and lead-free copper alloys, copper alloys that have been NPb-treated (Non-Pb-treated) or stainless steel are preferred because they can prevent lead from leaching out.In particular, it is preferable to use lead-free copper alloys or copper alloys that have been NPb-treated, which are easy to process and inexpensive. Furthermore, resin can be used as the material if it is acceptable to increase the external size of the water-carrying pipe 171. Examples of resin that can be used include POM (polyacetal resin), PPS (polyphenylene sulfide), PA (polyamide resin), and ABS (acrylonitrile butadiene styrene copolymer synthetic resin), with POM, PPS, and PA being preferred due to their excellent heat resistance, and POM and PA being particularly preferred due to their excellent toughness, with GF (gold-filled) processed PA being particularly preferred as it allows for high strength and thin wall thickness.

[0096] As shown in FIGS. 21 to 24, the head portion 172 includes a decorative portion 172j for hiding the other end of the outer hose 162 of the flexible hose 160 from view of the user, a stay receiving portion 172g provided below the decorative portion 172j and held by the holding portion 135a of the stay 135, a flange 172i provided below the stay receiving portion 172g for restricting upward movement of the head portion cover 173, and a positioning protrusion 172f provided below the flange 172i for positioning the head portion cover 173. It is composed of an E-ring opening 172a provided below the positioning protrusion 172f for inserting an E-ring 172b that engages with the step 171c of the water-passing pipe 171, a head-side engaging claw 172c provided at the lower end of the head portion 172 and that snap-fits with the water-type switching unit portion side engaging claw 174b of the water-type switching unit portion 174 described below, and a bayonet groove structure (first groove 172d, opening 172e) provided inside the head portion 172 for bayonet connection with the protrusion 174a of the water-type switching unit portion 174.

[0097] The materials that can be used for the components that make up the head portion 172 include ABS (acrylonitrile, butadiene, styrene copolymer synthetic resin), PA (polyamide resin), and POM (polyacetal resin), with ABS or PA being preferred because of their excellent design properties, and it is also preferable to use GF (gold-filled) processed PA because of its heat resistance.

[0098] As shown in Figures 25, 28(a), and 28(b), the stay support portion 172g has a flat portion 172k at a position corresponding to the flat portion 135b of the stay 135. If the flat portion 135b of the stay 135 and the flat portion 172k of the stay support portion 172g were not provided and the two were connected at their circumferential surfaces, when the operation protrusion 174c of the water shape switching unit 174 is rotated to switch the water shape, the rotational force would also rotate the cover 174d and head portion 172 of the water shape switching unit 174, which could interfere with switching the water shape. However, in this embodiment, because the flat portions 135b and 172k are provided, the rotation of the cover 174d and head portion 172 is restricted by the stay 135, and the operation protrusion 174c can be rotated without hindrance.

[0099] 23, 24, and 27, the positioning protrusions 172f, 172l are provided on the front and rear of the head part 172, and are adapted to fit into positioning recesses 173a, 173d provided in the head part cover 173. With this configuration, the head part cover 173 can be positioned.

[0100] 21 and 22, E-ring 172b is attached to E-ring opening 172a of head portion 172 and engages with step 171c of water pipe 171. With this configuration, downward movement of head portion 172 can be restricted.

[0101] 23 to 26, the head-side engaging claw 172c is provided in a cutout 172m provided at the lower end of the head 172 so as to protrude downward. The head-side engaging claw 172c has a guide surface that guides rotational movement in one direction of the water-type switching unit-side engaging claw 174b of the water-type switching unit 174 (described later), and a restriction surface that restricts rotational movement of the water-type switching unit-side engaging claw 174b in the other direction. This configuration allows the head-side engaging claw 172c and the water-type switching unit-side engaging claw 174b to be snap-fit ​​together.

[0102] The two head-side engaging claws 172c are provided at positions spaced apart by approximately 180 degrees and at positions spaced apart by approximately 90 degrees from a bayonet structure (first groove 172d, opening 172e, protrusion 174a) described later. With this configuration, the snap fit structure (head side engagement claws 172c, water-type switching unit side engagement claws 174b) is as far away as possible from the bayonet structure in the circumferential direction, so that force is more easily applied to the snap fit structure position, with the bayonet structure position where axial movement is more tightly restricted as a fulcrum, making it easier to fit the snap fit structure.

[0103] The materials that can be used for the components that make up the snap-fit ​​structure include POM (polyacetal resin), PA (polyamide resin), and ABS (acrylonitrile butadiene styrene copolymer synthetic resin), with POM or PA being preferred because of their low sliding resistance, and POM being particularly preferred because of its dimensional stability (due to water absorption).

[0104] 23 to 26, the bayonet groove structure (first groove 172d, opening 172e) is provided on the inner side surface below the head portion 172, and is composed of the first groove 172d that is open at its lower end downward and extends in the axial direction, and opening 172e that is provided at the upper end of the first groove 172d and extends in the circumferential direction. Two bayonet groove structures are provided at positions approximately 180 degrees apart. With this configuration, the bayonet groove structure and the protrusion 174a of the water-type switching unit portion 174 can be bayonet-coupled.

[0105] Furthermore, with this configuration, the water spouting direction of water shape switching unit 174 coincides with the direction of first groove 172d, and so when head portion 172 and water shape switching unit 174 are connected by the bayonet structure (first groove 172d, opening 172e, protrusion 174a), movement of water shape switching unit 174 in the water spouting direction is restricted, improving durability against pressure in the water spouting direction. In other words, by using a structure that can withstand water pressure, which requires the greatest strength, by retaining the bayonet structure, and by using snap fits in areas where there is light artificial load such as water shape switching, product quality can be effectively achieved.

[0106] The materials that can be used for the components that make up the bayonet structure include POM (polyacetal resin), PA (polyamide resin), and ABS (acrylonitrile, butadiene, styrene copolymer synthetic resin), with POM or PA being preferred because of their low sliding resistance, and POM being particularly preferred because of its dimensional stability (due to water absorption).

[0107] As shown in FIGS. 21 and 27, the head cover 173 (corresponding to the "cover member") has positioning recesses 173a and 173d, which are open at the top, on the inner side surfaces of the front and rear. With this configuration, the head cover 173 can be attached to the positioning projections 172f, 172l of the head 172 from below. Furthermore, the head cover 173 prevents the connection parts formed by the bayonet structure and the snap-fit ​​structure from being exposed to the outside, effectively preventing the connection from being released.

[0108] As shown in Figures 21, 22, 25, and 26, the water shape switching unit 174 is mainly composed of an operating part 174e that performs the water shape switching operation of the water shape switching unit 174, a cover 174d that receives the operating part 174e and connects the water shape switching unit 174 to the head part 172, and an E-ring 174f that restricts the operating part 174e from moving up and down relative to the cover 174d.

[0109] As shown in Figures 21, 22, 25, and 26, the operating portion 174e is mainly composed of a cylindrical portion 174h that fits into the cover 174d, a groove 174i that is provided on the outer surface of the cylindrical portion 174h and that receives an E-shaped ring 174f, and operating protrusions 174c that are provided at two locations, at the front and rear, and that are used by the user.

[0110] As shown in Figures 21, 22, 25, and 26, the cover 174d is mainly composed of a first cylindrical portion 174j that receives the cylindrical portion 174h of the operating portion 174e and has an opening 174g through which the E-shaped ring 174f is inserted, a stepped surface 174k that is provided at the upper end of the first cylindrical portion 174j and has a water-type switching unit side engagement claw 174b, and a second cylindrical portion 174l that is provided inside the water-type switching unit side engagement claw 174b of the stepped surface 174k and has protrusions 174a provided at two locations, one at the front and one at the rear.

[0111] As shown in FIG. 25(b), the water-type switching unit side engaging claw 174b has a guide surface corresponding to the guide surface of the head side engaging claw 172c, and a regulating surface corresponding to the regulating surface of the head side engaging claw 172c. With this configuration, the head part side engaging claw 172c and the water type switching unit part side engaging claw 174b can be connected by snap fit.

[0112] With this configuration, even if a rotational force is applied to the water-shaped switching unit part 174, the connection between the head part 172 and the water-shaped switching unit part 174 can be prevented from being released because of the snap-fit ​​structure.

[0113] As shown in Figures 21, 22, 25, and 26, after the cylindrical portion 174h of the operating portion 174e is inserted into the first cylindrical portion 174j of the cover 174d, the E-shaped ring 174f passes through the opening 174g of the first cylindrical portion 174j and engages with the groove 174i of the cylindrical portion 174h, thereby regulating the up and down movement of the operating portion 174e.

[0114] The mechanism for switching the water form of the water form switching unit 174 needs only to be able to switch between straight water spout and shower water spout by rotating it, and a general or well-known mechanism can be used, so explanation will be omitted. With this configuration, the pressure loss during water-type switching can be reduced, and the water-type switching unit 174 can be made smaller. Furthermore, even with this configuration, in this embodiment, the rotation of the cover 174d and the head portion 172 is restricted by the stay 135, so the water shape can be switched by rotating the operating protrusion 174c without any hindrance.

[0115] Next, a method for assembling the shower head 170 will be described. The assembly method for the shower head 170 includes the following steps: a first step of attaching the head portion 172 to the water flow pipe 171 from above; a second step of attaching the head portion cover 173 to the head portion 172 from below; a third step of inserting the water shape switching unit portion 174 into the head portion 172 from below; and a fourth step of rotating the water shape switching unit portion 174 to bayonet-connect and snap-fit-connect the head portion 172 and the water shape switching unit portion 174.

[0116] 21 and 22, in the first step, E-ring 172b is attached to head portion 172, and then head portion 172 is attached from above to water passage pipe 171. At this time, because E-ring 172b is attached to head portion 172, E-ring 172b gets caught on step 171c of water passage pipe 171, restricting downward movement of head portion 172.

[0117] Regarding the second step, as shown in Figures 21, 22, and 27, the head cover 173 has positioning recesses 173a, 173d with upwardly opening upper ends on the inner side surfaces of the front and rear, so that it can be attached to the positioning protrusions 172f, 172l of the head 172 from below. Furthermore, a flange 172i provided on the head portion 172 restricts the head portion cover 173 from moving upward.

[0118] Regarding the third step, as shown in Figures 23 to 26, the bayonet-structured first groove 172d of the head portion 172 is provided on the inner side surface below the head portion 172, and its lower end is open downward and extends in the axial direction, so that the protrusion 174a of the water-type switching unit portion 174 can be inserted into the first groove 172d from below.

[0119] Regarding the fourth step, as shown in Figures 23 to 26, the bayonet-structured opening 172e of the head portion 172 extends circumferentially at the upper end of the first groove 172d. Therefore, by bringing the protrusion 174a of the water-shaped switching unit portion 174 into contact with the upper end of the first groove 172d and then rotating it in the direction in which the opening 172e extends, the protrusion 174a enters the opening 172e, and the head portion 172 and the water-shaped switching unit portion 174 can be bayonet-coupled.

[0120] In addition, in the fourth step, as shown in FIGS. 23 to 26, the head portion 172 and the water-type switching unit portion 174 are connected by a bayonet connection and also by a snap fit connection. During bayonet coupling, when protrusion 174a enters opening 172e, the guide surface of water-shaped switching unit side engagement claw 174b moves along the guide surface of head side engagement claw 172c, and after climbing over the guide surface of water-shaped switching unit side engagement claw 174b, the regulating surface of water-shaped switching unit side engagement claw 174b and the regulating surface of head side engagement claw 172c come into contact, restricting rotational movement in the direction of releasing the bayonet coupling.

[0121] By using these steps for the method of assembling the shower head 170, the shower head 170 can be assembled through simpler steps.

[0122] [Positioning structure 190] The positioning structure 190 is a structure for positioning the shower head 170, and as shown in Figure 28, is composed of a stay receiving portion 172g of the head portion 172 and a holding portion 135a of the stay 135. The stay receiving portion 172g of the head portion 172 has already been explained, so its explanation will be omitted.

[0123] 28(a), the holding portion 135a of the stay 135 is hook-shaped, so when the shower head 170 is rotated around the shaft upper cover 134 as the axis of rotation, the stay receiving portion 172g and the holding portion 135a get caught, and the shower head 170 can be moved while being held by the holding portion 135a. With this configuration, the shower head 170 can be held by the stay 135 even when the user moves the shower head 170. Furthermore, to make it difficult for the shower head 170 to come off the holding portion 135a of the stay 135, it is preferable that the direction B in which the notch of the holding portion 135a is released has a predetermined angle θ with the movement direction A of the stay 135, as shown in FIG. 28(a). The angle θ is preferably 30 to 60 degrees so that it can be easily removed but will not come off unexpectedly. Since it is particularly important to make it difficult to come off in the rotational direction, an angle of 40 degrees or more is preferable, and since it is necessary to make it difficult to come off in the front-to-rear direction, an angle of 50 degrees or less is preferable. In this embodiment, the angle is 45 degrees.

[0124] Next, a method for assembling the positioning structure 190 will be described. The method of assembling the positioning structure 190 includes a first step of inserting the shower head 170 into the holding portion 135a of the stay 135 through the notch in the holding portion 135a.

[0125] 1, shower head 170 is connected to flexible hose 160, allowing it to be freely moved around faucet main body 110. This allows the user to easily insert stay receiving portion 172g of shower head 170 into holding portion 135a of stay 135 through the notch in the holding portion 135a. [Industrial Applicability]

[0126] The swing angle regulation structure 130 according to the present invention is not limited to faucets, but can be widely applied to various fields that require regulation of the swing angle. The water intrusion prevention structure 150 according to the present invention is not limited to faucets, but can be widely applied to various fields where measures against water intrusion are required. Furthermore, the faucet 100, flexible hose 160, and shower head 170 of the present invention can be widely applied not only to household faucets, but also to faucet devices that discharge, stop, and drain fluids such as water or hot water. [Explanation of symbols]

[0127] 100: Faucet 110: Faucet body 111: Upper body 111a: Water supply inlet 111b: Hot water inlet 111c: Purified water outlet 111d: Hot water supply channel 111e: Water supply channel 111f: Mixed water flow path 111g: Purified water flow path 111h: Screw hole 111i: Packing 111j: Packing 112: Hot and cold water mixing valve 113: Purified raw water switching valve 114: Water purification cartridge 120: Faucet body cover 120a: Shaft lower cover (outer cover member, fixing member) 120b: Protrusion 120c: Upper body cover 120d: Notch 120e: Lower body cover 121: Water purification cartridge cover 121a: Opening 121b: First cover part 121c: Second cover part 130: Swing angle control structure 131: Shaft (rigid tube) 131a: Restriction ring recess 131b: Restriction ring recess 131c: Metal fitting holder 131d:Aperture 131e: Regulatory Ring 131f: Regulatory ring 131g: Packing 131h: Flange 131i: Recess for packing 131j:Screw 132: Inner cover member 132a: Notch 132d: screw hole 132e: Fitting protrusion 132f: Interference member 133: Washer 134: Shaft upper cover (outer cover member, rotating member) 134a :hole 134b: Screw 134c: Fitting recess 135: Stay 135a: Holding part 135b: Flat part 136: Cosmetic cover 150: Water intrusion prevention structure 151: Lower body (cylindrical part) 151a: Screw receiving part 151b: Storage section 151c: Insertion hole 152: Pipe cover 153: Piping 153a: Water supply pipe 153b: Hot water supply piping 153c: Packing 153d: Spacer 153e: flange 153f: Fixing bracket 153g: Screw 154: Screw 155: Split packing (sealing material) 155a: Lip seal part 155b: First divided member 155c: Second divided member 155d: First divided surface 155e: 2nd dividing plane 155f: 3rd dividing plane 160: Flexible hose 161: Inner hose 162: Outer hose 163: Faucet body side fitting 163a: C-ring receiving part 163b: Packing receiving part 163c: Packing receiving part 163d: C-ring 163e: Packing 163g: Packing 164: Shower head side bracket 164a: C-ring receiving part 164b: Packing receiving part 164c: Packing receiving part 164d: C-ring 164e: Packing 164g: Packing 170: Shower head (water discharge device) 171: Water pipe 171a: Metal fitting holder 171b :Aperture 171c: Step 172: Head 172a: E-ring opening 172b: E-ring 172c: Head side engagement claw (snap fit structure) 172d: First groove (bayonet groove structure, bayonet structure) 172e: Opening (bayonet groove structure, bayonet structure) 172f: Positioning protrusion 172g: Stay support 172i: Flange 172j: Cosmetic department 172k: flat part 172l: Positioning protrusion 172m: Notch 173: Head cover (cover member) 173a: Positioning recess 173d: Positioning recess 174: Water type switching unit 174a: Protrusion (bayonet structure) 174b: Water-type switching unit side engagement claw (snap fit structure) 174c: Operation protrusion 174d: Cover 174e:Operation unit 174f: E-ring 174g: opening 174h: Cylindrical part 174i: Groove 174j: 1st cylindrical part 174k: Step surface 190: Positioning structure

Claims

1. A water discharger having a head portion having a cylindrical structure and a water shape switching unit portion connected to the inside of the head portion and having a cylindrical structure, The head portion and the water-type switching unit portion are provided with a bayonet structure and a snap-fit ​​structure along the circumferential surface of the cylindrical structure that faces each other, The head part and the water-type switching unit part are connected by the bayonet structure, and at the same time, the connection is also made by the snap-fit ​​structure. Water discharge device.

2. The bayonet structure has a first groove extending in an axial direction; The water discharge direction of the water type switching unit and the direction of the first groove are the same. The water discharge device according to claim 1.

3. The bayonet structure is provided in two positions spaced approximately 180 degrees apart on the circumferential surface of the cylindrical structure, The snap-fit ​​structure is provided in two positions spaced approximately 90 degrees apart from the bayonet structure. The water discharge device according to claim 2.

4. The water type switching unit switches the water type by rotating it in the circumferential direction. The water discharge device according to claim 3.

5. A cover member for covering the head portion is provided. The water discharge device according to claim 4.

6. a stay that is fixed to another member, rotates around the other member as an axis, and has a holding portion at a tip thereof that holds the head portion; The holding portion is shaped so that the head portion does not come off when the stay is rotated. The water discharge device according to any one of claims 1 to 5.

7. The holding portion is configured in a hook shape having a flat portion, The head portion has a groove having a shape corresponding to the flat portion and into which the holding portion is inserted. The water discharge device according to claim 6.

8. A water discharger having a head portion having a cylindrical structure and a water shape switching unit portion connected to the inside of the head portion and having a cylindrical structure, The head portion and the water-type switching unit portion are provided with a bayonet structure and a snap-fit ​​structure along the circumferential surface of a cylindrical structure, respectively; The head portion and the water-type switching unit portion are connected by the bayonet structure, and at the same time, the connection is also made by the snap-fit ​​structure, A cover member for covering the head portion is provided. A method for assembling a water discharge device, comprising: a first step of attaching the cover member to the head portion from below; A second step of inserting the water-type switching unit from below into the cylindrical structure of the head portion; and a third step of rotating the water-type switching unit to connect the water-type switching unit using the bayonet structure and the snap-fit ​​structure; having How to assemble a water discharge device.

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