Shower head

Abstract

The present invention suppresses sloshing of a rotating body relative to a head main body during rotation of the rotating body. The shower head comprises: a head main body; a nozzle member provided to the head body; and a rotating body disposed between the head main body and the nozzle member and provided so as to be rotatable about a predetermined rotation axis. A first engagement part is provided at a position away from the rotating shaft in the rotating body, a second engagement part that engages with the first engagement part in a direction along the rotating shaft is provided in the head main body, and at least one of the first engagement part and the second engagement part extends in a circumferential direction centered on the rotating shaft.

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202480030904.0 (22) Application Date 2024.05.02 (30) Priority Data 2023-089530 2023.05.31 JP 2023-089529 2023.05.31 JP (85) PCT International Application Entering National Phase Date 2025.11.06 (86) PCT International Application Application Data PCT / JP2024 / 016838 2024.05.02 (87) PCT International Application Publication Data WO2024 / 247606 JA 2024.12.05 (71) Applicant MTG Corporation Address: 32-2 Honjin-dori, Nakamura-ku, Nagoya City, Aichi Prefecture, Japan (72) Inventor: Yasuhiro Ozeki (74) Patent Agency: Shanghai Huacheng Intellectual Property Agency Co., Ltd., 31300 Patent Attorney: Liying Zhang (51) Int.Cl. A47K 3 / 28 (2006.01) (54) Invention Title: Shower Head (57) Abstract: During the rotation of the rotating body, the swaying of the rotating body relative to the head body is suppressed. The shower head includes: a head body; a nozzle component disposed on the head body; and a rotating body disposed between the head body and the nozzle component and configured to rotate about a predetermined rotation axis. A first engaging portion is provided in the rotating body at a position away from the rotation axis, and a second engaging portion is provided in the head body that engages with the first engaging portion in the direction along the rotation axis. At least one of the first engaging portion and the second engaging portion extends circumferentially about the rotation axis. Claims 1 page, Description 11 pages, Drawings 8 pages, CN 121218915 A 2025.12.26 CN 1 21 21 89 15 A 1. A shower head comprising: a head body having a flow path through which fluid can flow; a nozzle component disposed on the head body; and a rotating body disposed relative to the head body on the nozzle component side and configured to be rotatable relative to the head body about a predetermined rotation axis, characterized in that a first engaging portion is provided in the rotating body at a position away from the rotation axis, and a second engaging portion is provided in the head body that engages with the first engaging portion in a direction along the rotation axis, at least one of the first engaging portion and the second engaging portion extending circumferentially about the rotation axis. 2. The shower head according to claim 1, wherein the engaging portion of one of the first engaging portion and the second engaging portion is an arc shape continuously connected circumferentially along an imaginary circle centered on the rotation axis, and the engaging portion of the other engaging portion is a shape having a plurality of engaging portions discontinuously arranged along the circumferential direction.3. The shower head according to claim 1 or 2, characterized in that one of the rotating body and the head body is disposed at a position away from the rotation axis, and has a protrusion that abuts against the other in the direction along the rotation axis. 4. The shower head according to claim 1, characterized in that it further comprises a clicking mechanism that generates a clicking sensation with rotation of the rotating body, the clicking mechanism comprising: a recess forming body disposed on one of the head body and the rotating body, having formed a plurality of recesses arranged along an imaginary circle centered on the rotation axis and passing through the engaging portions of the first engaging portion and the second engaging portion; and a protrusion that is capable of moving forward and backward relative to the recesses, the clicking mechanism being configured such that the protrusion moves relative to the plurality of recesses with rotation of the rotating body. Claims 1 / 1 page 2 CN 121218915 A Shower Head Technical Field

[0001] The technology disclosed in this specification relates to a shower head. Background Art

[0002] Conventionally, shower heads having an operating member configured to rotate around a predetermined rotation axis are known. Such a shower head includes a head body, a nozzle component, and an operating member. The head body has a flow path through which fluid can flow. The nozzle component is disposed on the head body. The operating member is disposed between the head body and the nozzle component and is configured to rotate around a predetermined rotation axis (for example, see Patent Document 1).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-204842.

[0006] Technical Problem to be Solved by the Invention

[0007] However, in conventional shower heads, for example, when the operating member is rotated during water spraying, the water pressure is concentrated at a position off-center from the rotation axis relative to the operating member, sometimes causing fluctuations in the gap between the operating member and the head body, and the operating member wobbles relative to the head body. Summary of the Invention

[0008] In this specification, a technology that can solve the above-mentioned technical problem is disclosed.

[0009] Technical means for solving technical problems

[0010] The technology disclosed in this specification can be implemented, for example, in the following ways.

[0011] (1) A shower head disclosed in this specification includes: a head body having a flow path through which fluid can flow; a nozzle component disposed on the head body; and a rotating body disposed on the nozzle component side relative to the head body and configured to be rotatable relative to the head body about a predetermined rotation axis. A first engaging portion is provided in the rotating body at a position away from the rotation axis, and a second engaging portion is provided in the head body that engages with the first engaging portion in the direction along the rotation axis.At least one of the first engaging portion and the second engaging portion extends circumferentially about the axis of rotation.

[0012] In conventional shower heads, for example, when the rotating body is rotated during water spraying, water pressure is sometimes applied to a position off-center from the axis of rotation relative to the rotating body. In this case, the gap between the rotating body and the head body sometimes fluctuates, and the rotating body wobbles relative to the head body. In contrast, in this shower head, at a position away from the axis of rotation of the rotating body, the first engaging portion of the rotating body and the second engaging portion of the head body engage with each other. At least one of the first engaging portion and the second engaging portion extends circumferentially, and the rotating body rotates and moves along the shape of the engaging portion. Therefore, during the rotation of the rotating body, the wobbling of the rotating body relative to the head body can be suppressed.

[0013] (2) In the above-described shower head, the structure may also be as follows: the engaging portion of one of the first engaging portion and the second engaging portion is an arc shape that is continuously connected circumferentially along an imaginary circle centered on the axis of rotation, and the engaging portion of the other is a shape having a plurality of engaging portions arranged discontinuously along the circumferential direction. In this shower head, there is a structure in which an arc-shaped engaging portion engages with multiple engaging portions that are intermittently arranged in an arc shape. Through this engagement, the rotation of the rotating body is smoothly guided. In addition, compared with a structure in which both engaging portions are arc-shaped, the sliding resistance between the two engaging portions can be reduced. Therefore, according to this shower head, the formation of a gap between the rotating body and the head body can be suppressed, while the rotational performance of the rotating body is improved.

[0014] (3) In the above-described shower head, there may also be a structure in which one of the rotating body and the head body is positioned away from the rotation axis and has a protrusion that abuts against the other in the direction along the rotation axis. According to this shower head, by providing the protrusion, for example when water pressure is applied to a position off-center from the rotation axis relative to the rotating body, it is possible to suppress the rotating body from tilting and swaying relative to the head body.

[0015] (4) The shower head described above may also have the following structure: it further includes a clicking mechanism that generates a clicking sensation as the rotating body rotates. The clicking mechanism includes: a recess forming body disposed on one of the head body and the rotating body, having formed a plurality of recesses arranged along an imaginary circle centered on the rotation axis and passing through the engaging portions of the first engaging portion and the second engaging portion; and a protrusion that can move forward and backward relative to the recesses. It is configured such that the protrusion moves relative to the plurality of recesses as the rotating body rotates. According to this shower head, the formation of a gap between the rotating body and the head body can be suppressed, and the reduction in the rotational property of the rotating body caused by the pressing force of the clicking mechanism applied to an eccentric position can be suppressed.

[0016] Furthermore, the technology disclosed in this specification can be implemented in various ways, for example, by means of a method for displacing the shower head and its operating components. Brief Description of the Drawings

[0017] FIG1 is a perspective view of the shower head according to the first embodiment.

[0018] FIG2 is an exploded perspective view of the shower head.

[0019] FIG3 is a partially enlarged front view of the shower head.

[0020] FIG4 is a cross-sectional view showing the internal structure of the shower head at position IV-IV in FIG3.

[0021] FIG5 is a cross-sectional view showing the internal structure of the shower head at position V-V in FIG3.

[0022] FIG6 is an explanatory diagram showing the rear surface structure of the movable flow path component and the front surface structure of the fixed flow path component.

[0023] FIG7 is an explanatory diagram showing the rear surface structure of the movable flow path component and the front surface structure of the fixed flow path component in the shower head according to the second embodiment.

[0024] FIG8 is a schematic diagram showing the click pin and the click plate. Detailed Embodiments

[0025] A. Embodiment:

[0026] A-1. Structure of Shower Head 10:

[0027] Referring to Figures 1 to 6, the first embodiment will be described. In each figure, mutually orthogonal XYZ axes used to determine the direction are shown. The positive direction of the Z-axis is the upward direction, the negative direction of the Z-axis is the downward direction, the positive direction of the X-axis is the forward direction (spraying direction), and the negative direction of the X-axis is the backward direction.

[0028] The shower head 10 of this embodiment is configured to switch multiple flow paths corresponding to multiple spraying modes, thereby changing the spraying state of water (an example of a fluid). The multiple spraying modes are, for example, "mist mode", "direct mode", "pure direct mode", "jet mode", and "massage mode". The mist mode is a mode that sprays mist-like water, the direct mode is a mode that sprays water with a higher water pressure and momentum than the mist mode, and the pure direct mode is a mode that sprays water with a higher density than the direct mode. The jet mode is a mode that sprays water with the highest water pressure, and the massage mode is a mode that sprays water intermittently. In this embodiment, "water" includes warm water and cold water. Furthermore, the water pressure referred to here is the water pressure when it comes into contact with the skin after exiting the spray nozzles formed in the protective cover 700 described later.

[0029] (Overall structure of the shower head 10)

[0030] The shower head 10 includes a head body 100, a movable flow path component 400, a water flow generating component 500, an operating ring 600, and a protective cover 700. The movable flow path component 400 is rotatably assembled relative to the head body 100. The water flow generating component 500 is assembled to the head body 100 and generates water flow corresponding to each spray pattern. The operating ring 600 switches between multiple spray patterns. The protective cover 700 has multiple spray nozzles (701-705).

[0031] The head body 100 includes a cover component 200 and a fixed flow path component 300.The fixed flow path component 300 is fixed inside the cover component 200. The fixed flow path component 300 forms a flow path through which water can flow. The movable flow path component 400, the water flow generating component 500 (an example of a nozzle component) and the protective cover 700 are disposed inside the operating ring 600 (an example of an operating component) and are arranged in the above order from the side closest to the fixed flow path component 300. The movable flow path component 400, the water flow generating component 500 and the protective cover 700 are configured to rotate relative to the fixed flow path component 300 in conjunction with the rotation of the operating ring 600. The fixed flow path component 300 and the movable flow path component 400 are an example of a changing mechanism.

[0032] (Cover component 200)

[0033] The cover component 200 is formed of metal (stainless steel, etc.) or resin (EPDM (ethylene propylene diene monomer rubber), etc.). The cover component 200 has a cover body 210 and a gripping part 220 connected to the cover body 210. The cover body 210 is dome-shaped with an opening 212 on the front side. The grip 220 is generally cylindrical and houses a water pipe 230 (see Figure 4). The water pipe 230 is connected to the water heater via a shower pipe.

[0034] (Fixed flow path component 300)

[0035] The fixed flow path component 300 is made of synthetic resin and is generally circular. The fixed flow path component 300 has a base portion 310, a mounting shaft 320, and a connector portion 330. The base portion 310 is fixed inside the cover body 210. The mounting shaft 320 is cylindrical and protrudes forward from the center of the base portion 310. The connector portion 330 extends downward from the base portion 310 and connects to the water pipe 230. Hereinafter, the central axis of the mounting shaft 320 is sometimes referred to as the "rotation axis L". The fixed flow path component 300 has a base flow path 340 inside (see Figure 4). The base flow path 340 communicates with the internal space of the water pipe 230 and has a base flow outlet 340out (see FIG. 6) that opens at the front 300f of the fixed flow path component 300. A rubber gasket 350 surrounding the base flow outlet 340out is disposed on the front surface 300f of the fixed flow path component 300 (see FIG. 6).

[0036] Specifically, as shown in FIGS. 5 and 6, a pair of recesses 301 are formed on the front surface 300f of the fixed flow path component 300. The pair of recesses 301 are disposed symmetrically with respect to the mounting axis 320. A movable body 302 is accommodated in each recess 301 in a manner that allows it to move in the front-rear direction. A base flow outlet 340out communicating with the base flow path 340 is formed on the front surface of each movable body 302. In addition, a gasket 350 is formed on the front surface of each movable body 302 in a manner that surrounds the base flow outlet 340out. Each movable body 302 is pressed toward the rear surface 400r of the movable flow path component 400 by force-applying components such as springs 303, and the pad 350 is in close contact with the rear surface 400r of the movable flow path component 400.

[0037] (Modible Flow Path Component 400)

[0038] The movable flow path component 400 is made of synthetic resin and is disposed in front of the base portion 310 of the fixed flow path component 300. The movable flow path component 400 is generally a circular plate centered on the mounting shaft 320 (rotation shaft L), and a through hole 401 is formed in the center. By inserting the mounting shaft 320 into the through hole 401, the movable flow path component 400 is rotatably supported relative to the fixed flow path component 300 with the mounting shaft 320 as the rotation center.

[0039] The movable flow path component 400 has multiple flow paths corresponding to the above-mentioned multiple ejection modes. Multiple outlets (omitted in FIG2) corresponding to the multiple flow paths are formed on the front surface of the movable flow path component 400. As shown in Figure 6, on the rear surface 400r of the flow path component 400, as described on page 3 / 11 of the specification (CN 121218915 A), a plurality of flow inlets 430 (431 to 435) corresponding to a plurality of flow paths are formed. The plurality of flow inlets 430 are arranged in concentric circles centered on the rotation axis L (mounting axis 320). Furthermore, the plurality of flow inlets 431 to 435 corresponding to different ejection modes can also be arranged at equal intervals. In this embodiment, a pair of flow inlets 431 to 435 are formed relative to a flow path of one ejection mode. A pair of flow inlets 431, 431 (432, 432…) corresponding to a common ejection mode are arranged at positions symmetrical to each other relative to the rotation axis L. When the movable flow path component 400 is rotated relative to the fixed flow path component 300, the base outlet 340out of the movable flow path component 400 is selectively connected to the inlets 431 to 435 of the plurality of flow paths of the fixed flow path component 300. Furthermore, in each figure, a pair of base outlets 340out are shown connected to a pair of inlets 433.

[0040] (Water Flow Generating Component 500)

[0041] The water flow generating component 500 is disposed in front of the movable flow path component 400. The water flow generating component 500 is generally a circular plate centered on the mounting shaft 320 (rotation shaft L), and a through hole 501 is formed in the center. By inserting the mounting shaft 320 into the through hole 501, the water flow generating component 500 and the movable flow path component 400 are rotatably supported relative to the fixed flow path component 300 with the mounting shaft 320 as the rotation center. The water flow generating component 500 has multiple generating holes that are respectively connected to multiple flow paths of the movable flow path component 400. Each generating hole converts water from the flow path into a water flow with a spray state corresponding to the spray pattern of that flow path. Furthermore, the water flow generating component 500 is preferably made of a soft resin. For example, when any of the generating holes of the water flow generating component 500 becomes clogged, the water flow generating component 500 can be manually deformed to clean the generating holes.

[0042] (Protective Cover 700)

[0043] The protective cover 700 is a cover used to protect the operating ring 600. The protective cover 700 is formed of metal (stainless steel, etc.) or resin (EPDM (ethylene propylene diene monomer rubber), etc.). The protective cover 700 is generally in the shape of a circular plate centered on the mounting shaft 320 (rotation shaft L), and is disposed in front of the water flow generating component 500. The protective cover 700 has a plurality of water spray holes that are respectively connected to a plurality of generating holes of the water flow generating component 500. The water spray holes include, for example, a plurality of mist holes 701, a plurality of direct holes 702, a plurality of jet direct holes 703, a plurality of massage holes 704, and a plurality of pure direct holes 705 (see Figures 1 and 3). In addition, the front surface of the protective cover 700 is electroplated to give it a premium feel.

[0044] (Operating Ring 600)

[0045] The operating ring 600 is made of metal (stainless steel, etc.) or synthetic resin and is a ring-shaped component centered on the mounting shaft 320 (rotation shaft L). The operating ring 600 has an outer diameter that is approximately equal to the outer shape of the opening 212 of the head body 100. The operating ring 600 is arranged corresponding to the opening 212 of the head body 100 in the front-rear direction and surrounds the movable flow path component 400, the water flow generating component 500, and the protective cover 700.

[0046] The movable flow path component 400 and the water flow generating component 500 are secured against detachment by fastening components 260 and nut components 270 that engage with threaded holes 322 formed in the mounting shaft 320. The operating ring 600 and the protective cover 700 are fixed relative to the water flow generating component 500. Therefore, the user rotates the operating ring 600 by holding it (see the arrow in FIG3), and the movable flow path component 400 and the water flow generating component 500 rotate together. During this rotation, the inlet 430 formed in the movable flow path component 400 corresponding to multiple spray patterns is selectively connected to the base flow path 340 formed in the fixed flow path component 300. In this way, by rotating the operating ring 600, multiple flow paths corresponding to multiple spray patterns can be switched, and the water spray state can be changed. In addition, multiple recesses 602 are formed all around the outer circumference of the operating ring 600 (see FIG1 and FIG3). The multiple recesses 602 function as an anti-slip mechanism when the user holds the operating ring 600 to rotate.

[0047] A-2. Clicking mechanism:

[0048] The shower head 10 of this embodiment has a clicking mechanism that generates a clicking sensation when the operating ring 600 is rotated. The clicking mechanism includes a setting clicking mechanism and a switching clicking mechanism. The setting mechanism generates a first click sensation when the operating ring 600 reaches the mode setting position corresponding to the ejection mode on page 4 / 11 of the instruction manual, 6 CN 121218915 A.The mode setting position refers to the rotational position of the operating ring 600 when any of the flow inlets 430 (431-435) corresponding to multiple ejection modes formed in the movable flow path member 400 are connected to the base flow path 340 formed in the fixed flow path member 300. The switching click mechanism generates a second click sensation when the operating ring 600 moves in the intermediate region between one mode setting position and another mode setting position. In this embodiment, the first click sensation is greater than the second click sensation. Furthermore, the click sensation refers to the tactile sensation, sound, etc., generated along with the operation of the operating member (operating ring 600). A large click sensation means that the tactile sensation, sound, etc., generated along with the rotational operation of the operating member is large (strong).

[0049] Specifically, the setting click mechanism and the switching click mechanism have a setting protrusion 810, a switching protrusion 910, and a click plate 450. The click plate 450 is an example of a recessed forming body.

[0050] A click plate 450 is disposed on the rear surface 400r of the movable flow path member 400. The click plate 450 is an annular member centered on the rotation axis L. The click plate 450 is disposed radially outside the inlet 430. A plurality of (five) setting recesses 830 and a plurality of (four) switching protrusions 930 are formed on the rear surface of the click plate 450. The plurality of setting recesses 830 and the plurality of switching protrusions 930 are disposed in positions symmetrical to each other with respect to the rotation axis L. In addition, the plurality of setting recesses 830 and the plurality of switching protrusions 930 are disposed on a concentric circle (an example of an imaginary circle) centered on the rotation axis L.

[0051] The plurality of setting recesses 830 are arranged at equal intervals along the circumferential direction centered on the rotation axis L on the upper part of the click plate 450. Each setting recess 830 is a generally spherical recess. Multiple switching protrusions 930 are arranged at equal intervals along the circumferential direction centered on the rotation axis L on the lower side portion of the click plate 450. Each switching protrusion 930 has a shape in which multiple protrusions are arranged circumferentially.

[0052] The setting protrusion 810 and the switching protrusion 910 are provided in the front surface 300f of the fixed flow path member 300 at a position radially offset from the rotation axis L. The setting protrusion 810 and the switching protrusion 910 are arranged in positions symmetrical to each other with respect to the rotation axis L. In addition, the setting protrusion 810 and the switching protrusion 910 are arranged on a concentric circle (an example of an imaginary circle) centered on the rotation axis L.

[0053] The setting protrusion 810 is configured to face the area in the click plate 450 where multiple setting recesses 830 are arranged. With the rotation operation of the operating ring 600, the setting protrusion 810 sequentially reaches the multiple setting recesses 830. When the operating ring 600 is in each mode setting position, the setting protrusion 810 enters each setting recess 830 (see Figure 4), and the base outlet 340out of the movable flow path component 400 communicates with any one of the inlets 431 to 435 of the plurality of flow paths of the fixed flow path component 300.At this time, a first click sensation is generated corresponding to the degree of engagement between the setting protrusion 810 and the setting recess 830 (the degree of entry of the setting click pin 812 relative to the setting recess 830, as described later, see Figure 4).

[0054] The switching protrusion 910 is configured to face the area in the click plate 450 where a plurality of switching protrusions and recesses 930 are arranged. With the rotation of the operating ring 600, the switching protrusion 910 passes through the plurality of switching protrusions and recesses 930 in sequence. When the operating ring 600 is located in the middle area between the mode setting positions, the switching protrusion 910 passes through each switching protrusion and recess 930, and the base outlet 340out of the movable flow path member 400 moves between adjacent inlets 430. At this time, a second click sensation is generated corresponding to the degree of engagement between the switching protrusion 910 and the switching protrusions and recesses 930 (the degree of entry of the switching click pin 912 relative to the switching recess 932, as described later).

[0055] As shown in FIG4, the setting protrusion 810 has a setting click pin 812. The setting click pin 812 is received in a receiving recess 814 formed on the front surface 300f of the fixed flow path member 300 in a manner that allows it to move in the front-back direction. The setting click pin 812 is pressed toward the click plate 450 by a force-applying member such as a spring 816.

[0056] The switching protrusion 910 has a switching click pin 912. The switching click pin 912 is received in a receiving recess 914 formed on the front surface 300f of the fixed flow path member 300 in a manner that allows it to move in the front-back direction. The switching click pin 912 is pressed toward the click plate 450 by a force-applying member such as a spring 916. Furthermore, the setting click pin 812, the switching click pin 912, and the click plate 450 are formed, for example, of resin (polyacetal resin (POM) etc.).

[0057] In this embodiment, the setting recess 830 is deeper than each switching recess 932 of the switching protrusion 930, and the setting protrusion 810 (setting click pin 812) is more deeply inserted into the setting recess 830 than the switching protrusion 910 (switching click pin 912) is. Therefore, the first click sensation of the setting click mechanism is greater than the second click sensation of the switching click mechanism.

[0058] In this embodiment, a lubricating oil recess 470 (see FIG6) is formed on the rear surface 400r of the movable flow path member 400. The lubricating oil recess 470 is a recess for accumulating lubricating oil and is arranged on a concentric circle (an example of an imaginary circle) with a plurality of flow inlets 430. In other words, the lubricating oil recess 470 is formed on the movement path of the gasket 350 in the rear surface 400r. Since lubricating oil can be accumulated in the lubricating oil recess 470, insufficient lubricating oil between the gasket 350 and the movable flow path component 400 can be suppressed.Furthermore, lubricating oil can also accumulate in the setting recess 830 and the switching protrusion 930 of the click plate 450. Therefore, insufficient lubricating oil between the setting protrusion 810 and the switching protrusion 910 and the click plate 450 can be suppressed.

[0059] A-3. Sway suppression mechanism:

[0060] The shower head 10 of this embodiment has a sway suppression mechanism. The sway suppression mechanism suppresses the swaying of the operating ring 600 relative to the head body 100. The sway suppression mechanism has a first engaging portion 460 provided on the movable flow path member 400 and a second engaging portion 360 provided on the fixed flow path member 300. The first engaging portion 460 and the second engaging portion 360 engage with each other without separation in the front-rear direction. In addition, the movable flow path member 400 is an example of a rotating body.

[0061] As shown in Figures 5 and 6, a first engaging portion 460 is provided on the rear surface 400r of the movable flow path member 400, extending circumferentially along an imaginary circle centered on the rotation axis L. The first engaging portion 460 is positioned radially outward relative to the locking plate 450. The first engaging portion 460 is a circular shape that extends continuously throughout the entire circumference of the rear surface 400r of the movable flow path member 400. A first engaging claw 462 protruding radially outward is formed at the rear end of the first engaging portion 460.

[0062] A plurality of second engaging portions 360 are provided on the front surface 300f of the fixed flow path member 300, and the plurality of second engaging portions 360 are arranged at equal intervals in the circumferential direction of an imaginary circle centered on the rotation axis L. The plurality of second engaging portions 360 are preferably positioned symmetrically to each other with respect to the rotation axis L. The second engaging portions 360 are positioned radially outward relative to the setting protrusion 810 and the switching protrusion 910. A second engaging claw 362 protruding radially inward is formed at the front end of each second engaging portion 360 (see FIG5). The second engaging claws 362 of the plurality of second engaging portions 360 engage with the first engaging claws 462 of the first engaging portion 460 from the outer peripheral side.

[0063] In this embodiment, a separating member 250 is disposed between the operating ring 600 and the head body 100, configured so that the operating ring 600 and the head body 100 do not directly contact each other (see FIGS. 4 and 5). Specifically, the separating member 250 is disposed between the rear end of the operating ring 600 and the opening 212 of the cover body 210. The separating member 250 is formed, for example, of resin (polyacetal resin (POM) etc.). As a result, it is possible to suppress the occurrence of friction noise between the operating ring 600 and the head body 100 (cover member 200) during the rotation operation of the operating ring 600.

[0064] A-4. Effects of this embodiment:

[0065] For example, when the operating ring 600 is rotated during water spraying, water pressure sometimes acts on a position eccentric to the rotation axis L relative to the movable flow path component 400, etc. In this case, due to the fluctuation of the gap between the operating ring 600 and the head body 100, the operating ring 600 sometimes wobbles relative to the head body 100.In contrast, in this embodiment, at a position away from the rotation axis L, the engaging portions 460, 360 of the movable flow path component 400 and the fixed flow path component 300 engage with each other, and the first engaging portion 460 extends circumferentially. The movable flow path component 400, etc., rotates smoothly along the shape of the first engaging portion 460. Therefore, during the rotation of the operating ring 600, the swaying of the operating ring 600 relative to the head body 100 can be suppressed. Specification 6 / 11 pages 8 CN 121218915 A

[0066] In this embodiment, the structure is that the arc-shaped first engaging portion 460 engages with a plurality of second engaging portions 360 intermittently arranged in an arc shape. Through this engagement, the rotation of the movable flow path component 400, etc., is smoothly guided. In addition, compared with a structure in which both engaging portions 360, 460 are arc-shaped, the sliding resistance between the two engaging portions 360, 460 can be reduced. Therefore, according to this embodiment, the formation of a gap between the operating ring 600 and the head body 100 can be suppressed, while the rotatability of the operating ring 600 can be improved.

[0067] In this embodiment, a setting click mechanism and a switching click mechanism are provided to generate a click sensation during the rotation operation of the operating ring 600. The setting click mechanism generates a first click sensation when the operating ring 600 reaches a mode setting position corresponding to each ejection mode. The switching click mechanism generates a second click sensation when the operating ring 600 moves in the intermediate region between one mode setting position and another mode setting position. In this embodiment, the first click sensation is greater than the second click sensation.

[0068] Therefore, in this embodiment, a click sensation is generated not only when the operating ring 600 reaches the mode setting position of each mode setting position, but also during the mode switching process of the operating ring 600. Moreover, the magnitudes of the click sensations generated during mode setting and mode switching are different. Therefore, while generating a click sensation during mode switching, the difference between the mode setting and mode switching processes can be sensorily identified. Furthermore, as described above, lubricating oil exists between the fixed flow path component 300 and the movable flow path component 400, and between the setting protrusion 810 and the switching protrusion 910 and the click plate 450. Therefore, during mode switching, the rotation operation of the operating ring 600 can generate a viscous sensation corresponding to the viscosity of the lubricating oil. However, in this embodiment, the viscous sensation can be mitigated by the clicking sensation of the switching click mechanism.

[0069] In this embodiment, the setting click mechanism (setting protrusion 810, setting recess 830) and the switching click mechanism (switching protrusion 910, switching recess 930) are arranged in positions symmetrical with respect to the rotation axis L. Therefore, by applying the forces of both in a well-balanced manner, the operating ring 600 can rotate smoothly.

[0070] B. Second Embodiment:

[0071] The second embodiment will be described with reference to FIGS. 7 and 8. Hereinafter, the same reference numerals will be used for structures in the shower head 10 of the second embodiment that are the same as those in the shower head 10 of the first embodiment described above, and their descriptions will be omitted as appropriate.

[0072] B-1. Clicking Mechanism:

[0073] In the first embodiment described above, the setting clicking mechanism and the switching clicking mechanism have different protrusions (setting protrusion 810 and switching protrusion 910). In contrast, in this second embodiment, the setting clicking mechanism and the switching clicking mechanism have a common protrusion 810a. This protrusion 810a is a structure that allows the setting recess 830a and the switching recess-protrusion 930a to move relative to each other.

[0074] Specifically, the setting clicking mechanism and the switching clicking mechanism have a protrusion 810a and a click plate 450a. The click plate 450a is an example of a recess forming body.

[0075] A click plate 450a is provided on the rear surface 400r of the movable flow path member 400a. The click plate 450a is an arc-shaped member centered on the rotation axis L. The click plate 450a is arranged radially outward relative to the flow inlet 430. Furthermore, in this second embodiment, three pairs of flow inlets 430 are formed. A plurality of (three) setting recesses 830a and a plurality of (two) switching protrusions 930a are formed on the rear surface of the click plate 450a. The setting recesses 830a and the switching protrusions 930a are arranged alternately in the circumferential direction. The plurality of setting recesses 830a and the plurality of switching protrusions 930a are arranged on a concentric circle centered on the rotation axis L.

[0076] A protrusion 810a is provided in the front surface 300f of the fixed flow path member 300a at a position radially offset from the rotation axis L. The protrusion 810a is arranged opposite to the click plate 450a. As the operating ring 600 rotates, the protrusion 810a causes the setting recess 830a and the switching protrusion-recession 930a to move alternately relative to each other. The protrusion 810a has a click pin 812a. The click pin 812a is received in a receiving recess 814a formed on the front surface 300f of the fixed flow path member 300a in a manner that allows it to move in the front-back direction, as described on page 7 / 11 of the specification (CN 121218915 A). The click pin 812a is pressed toward the click plate 450a by a force-applying member (not shown).

[0077] In this second embodiment, as shown in FIG8, the depth D1 of the setting recess 830a is deeper than the depth D2 of each switching recess 932a of the switching protrusion 930a, and the degree of entry of the protrusion 810a (click pin 812a) into the setting recess 830a is greater than the degree of entry of the protrusion 810a into the switching protrusion 930a (switching recess 932a). Therefore, the first click sensation of the setting click mechanism is greater than the second click sensation of the switching click mechanism.

[0078] Even with such a structure, a clicking sensation can be generated during mode switching, and the difference between mode setting and mode switching can be sensorily identified. Moreover, since the setting click mechanism and the switching click mechanism utilize a common protrusion 810a, the number of parts can be reduced compared to structures that utilize different protrusions in the setting click mechanism and the switching click mechanism, for example.

[0079] B-2. Sway suppression mechanism:

[0080] In this embodiment, the sway suppression mechanism includes a first engaging portion 460a provided on the movable flow path member 400a and a second engaging portion 360a provided on the fixed flow path member 300a. The first engaging portion 460a and the second engaging portion 360a engage with each other in a manner that they do not separate in the front-back direction.

[0081] The first engaging portion 460a extends continuously in the circumferential direction of an imaginary circle centered on the rotation axis L. The first engaging portion 460a and the clicking plate 450a (setting recess 830a, switching protrusion 930a) are arranged on the same circle (an example of an imaginary circle) centered on the rotation axis L. The second engaging portion 360a extends discontinuously in the circumferential direction of the imaginary circle centered on the rotation axis L. The second engaging portion 360a and the protrusion 810a are arranged on the same circle (an example of an imaginary circle) centered on the rotation axis L. Thus, during the rotation of the operating ring 600, the swaying of the operating ring 600 relative to the head body 100 can be suppressed.

[0082] In this embodiment, a plurality of (four) protrusions 370 are provided on the front surface 300f of the fixed flow path member 300a. The protrusions 370 contact the movable flow path member 400a in the front-rear direction. In this embodiment, the protrusions 370 are arranged opposite to the injection direct hole 703 (see Figure 3) relative to the rotation axis L. Therefore, it is possible to suppress the tilting and swaying of the operating ring 600 relative to the head body 100 when water pressure is applied locally relative to the movable flow path member 400a at a position eccentric from the rotation axis L, as in the spray mode. Furthermore, the protrusion 370 is positioned opposite the convex portion 810a relative to the rotation axis L. Moreover, the plurality of protrusions 370 are arranged in positions symmetrical with respect to the line passing through the convex portion 810a and the rotation axis L. Therefore, the convex portion 810a and the protrusion 370 can effectively suppress the tilting of the movable flow path member 400 relative to the fixed flow path member 300. In addition, the protrusion 370 reduces the sliding resistance between the movable flow path member 400a and the head body 100 (fixed flow path member 300a), allowing the operating ring 600 to rotate smoothly. Furthermore, the protrusion 370 may also have a point contact structure with respect to the movable flow path member 400a, preferably a surface contact structure.

[0083] C. Variations:

[0084] The technology disclosed in this specification is not limited to the above-described embodiments, and can be varied in various ways without departing from its spirit, for example, as follows.

[0085] The structure of the shower head 10 in the above embodiments is only one example, and various variations are possible. For example, the shape, size, and forming material of each part in the shower head 10 of the above embodiments are only one example, and various variations are possible.

[0086] The number and type of spray patterns of the shower head are not limited to the first and second embodiments described above. For example, the number of spray patterns of the shower head may be two, or six or more. In addition, the types of spray patterns of the shower head also include bubble patterns and water-stopping patterns.

[0087] In the above embodiment, the water flow generating component 500, the operating ring 600, and the protective cover 700 rotate integrally with the movable flow path component 400, which is a rotating body, relative to the head body 100. However, it is also possible for at least one of the water flow generating component 500, the operating ring 600, and the protective cover 700 to not rotate relative to the head body 100. For example, it is also possible for only the movable flow path component 400 to rotate relative to the head body 100, or for only the movable flow path component 400 and the water flow generating component 500 to rotate relative to the head body 100. Furthermore, in the above embodiment, the movable flow path component 400 is exemplified as a rotating body, but it is not limited to this. For example, it is also possible for the movable flow path component 400 and the water flow generating component 500 to be integrally formed.

[0088] In the above embodiments, an example of an operating member of the rotating body is a dial-type operating ring 600 that rotates around a predetermined rotation axis. However, it is not limited to this. For example, it may be a sliding operating member that slides in a predetermined direction, a seesaw-type operating member that displaces the body by an angle of inclination relative to a predetermined direction, or a button-type operating member that displaces the body by pressing. In addition, in the above embodiments, the rotating body has a structure with an operating ring 600, but it may also be a rotating body without an operating function.

[0089] In each of the above embodiments, the base outlet 340out in the fixed flow path members 300 and 300a may be one or more.

[0090] Regarding the clicking mechanism, in each embodiment, the first clicking sensation of the setting clicking mechanism may be smaller than the second clicking sensation of the switching clicking mechanism. Furthermore, in the above embodiments, the degree of the click sensation varies due to the different degrees of penetration of the protrusion relative to the concave portion, but it is not limited to this. For example, the degree of the click sensation can also vary due to the different forces exerted by the protrusion relative to the concave portion (the elastic force of springs 816 and 916).Furthermore, in the above embodiments, the recesses 830, 830a and the switching convex and concave portions 930, 930a are provided on the click plates 450, 450a, which are general components, but they can also be provided on different other components. In the above embodiments, the springs 816 and 916 are helical springs, but any force-applying component that applies force in a specified direction can be used, such as a leaf spring or a component capable of elastic deformation. The convex portions 810, 810a, 910, 910a are columnar bodies with pointed tips, but are not limited to this, for example, they can be spherical bodies.

[0091] In the above embodiments, the click mechanism is a structure that generates a click sensation between the convex and concave portions, but is not limited to this, for example, it can be a structure with a flexible plate and multiple interference portions, in which the flexible plate sequentially interferes with (contacts) multiple interference portions and moves according to the displacement of the operating component, thereby generating a click sensation. In such a structure, the different bending forces of the flexural plate and the different degrees of interference between the flexural plate and the interference portion can result in different clicking sensations.

[0092] In the first embodiment, the setting protrusion 810 may be provided on the movable flow path member 400, and the setting recess 830 may be provided on the fixed flow path member 300. Alternatively, the switching protrusion 910 may be provided on the movable flow path member 400, and the switching convex-concave portion 930 may be provided on the fixed flow path member 300. In the first embodiment, the plurality of setting recesses 830 and the plurality of switching convex-concave portions 930 may also be arranged at positions asymmetrical with respect to the rotation axis L. In the second embodiment, the protrusion 810a may be provided on the movable flow path member 400a, and the setting recess 830a and the switching convex-concave portion 930a may be provided on the fixed flow path member 300a. At least a portion of the plurality of setting recesses 830 may also be arranged at different intervals. The switching protrusions 930 and 930a have a structure with multiple switching recesses 932 and 932a, but they can also be structures with a single recess. However, by utilizing the setting recesses 830 and 830a and the switching protrusions 930 and 930a to make at least one of the number of recesses and the spacing between the recesses different, it is possible to effectively allow the user to distinguish the difference in the clicking sensation between the setting click mechanism and the switching click mechanism.

[0093] Regarding the sway suppression mechanism, in the first embodiment, the first engaging portion 460 is not limited to a circular shape, and may be, for example, an arc shape. In addition, there may be only one second engaging portion 360. Furthermore, the second engaging portion 360 may engage with the first engaging portion 460 from the inner peripheral side. In the second embodiment, there may also be only one protrusion 370. In addition, in various embodiments, the second engaging portion 360 and the first engaging portion 460 are engaged by claws (second engaging claw 362, first engaging claw 462), but are not limited to this, for example, they may also be engaged by concave and convex shapes.

[0094] Furthermore, the technology disclosed in this specification can be implemented, for example, in the following manner. Specification 9 / 11 pages 11 CN 121218915 A

[0095] (1) The shower head disclosed in this specification includes: a head body having a flow path through which fluid can flow; a nozzle component disposed in the head body; an operating component configured to be displaceable relative to the head body between at least two mode setting positions; a changing mechanism disposed within the head body, which changes the ejection state of fluid from the nozzle component according to the displacement of the operating component; a setting click mechanism that generates a first click sensation when the operating component reaches the mode setting position; and a switching click mechanism that generates a second click sensation of a different magnitude than the first click sensation when the operating component moves in an intermediate region between one mode setting position and another mode setting position.

[0096] In conventional shower heads, no clicking sensation is produced during mode switching as the operating components move between mode setting positions. Therefore, the user cannot sensorily perceive the movement of the operating components during mode switching. In contrast, in this shower head, a clicking sensation is produced not only when the operating components reach the mode setting positions, but also during mode switching. Furthermore, the magnitude of the clicking sensation during mode setting and mode switching is different. Therefore, while a clicking sensation is produced during mode switching, the difference between mode setting and mode switching can be sensorily perceived.

[0097] (2) In the above-described shower head, the structure may also be as follows: the setting click mechanism and the switching click mechanism have: a setting recess corresponding to the one mode setting position, a switching recess corresponding to the intermediate region, and another setting recess corresponding to the other mode setting position arranged in a predetermined direction in this order; and a protrusion that can move forward and backward relative to the setting recess and the switching recess, configured such that, with the displacement of the operating member, the protrusion moves relative to the other setting recess from the one setting recess through the switching recess. According to this shower head, since the setting click mechanism and the switching click mechanism are structures utilizing a common protrusion, the number of parts can be reduced compared to, for example, structures utilizing different protrusions in the setting click mechanism and the switching click mechanism.

[0098] (3) In the above-described shower head, the structure may also be as follows: the setting click mechanism has a first recess forming body having a setting recess corresponding to the mode setting position and a setting protrusion that can move in and out relative to the setting recess, configured such that, with the displacement of the operating member, the setting protrusion moves relative to one setting recess to another setting recess; the switching click mechanism has a second recess forming body having a switching recess relative to the intermediate region and a switching protrusion that can move in and out relative to the switching recess, configured such that, with the displacement of the member, the switching protrusion moves relative to the switching recess. According to this shower head, since the setting click mechanism and the switching click mechanism utilize individual protrusions, it is easy to individually set the first click sensation and the second click sensation.

[0099] (4) In the above-described shower head, the structure may also be as follows: the operating member is a ring-shaped member that is rotatable about a predetermined axis of rotation, and the setting protrusion and the switching protrusion are located on opposite sides of the axis of rotation. According to this shower head, compared with a structure in which, for example, the setting protrusion and the switching protrusion are located on the same side of the axis of rotation, the reduction in operability of the operating member and the generation of gap with the main body due to the pressing pressure of the setting click mechanism and the pressing pressure of the switching click mechanism being concentrated at an eccentric position can be suppressed.

[0100] Furthermore, the technology disclosed in this specification can be implemented in various ways, for example, in the form of a shower head and a mode switching method thereof.

[0101] Symbol Explanation

[0102] 10: Shower head; 100: Head body; 200: Cover component; 210: Cover body; 212: Opening; 220: Grip; 230: Water pipe; 250: Divider component; 260: Fastening component; 270: Nut component; 300, 300a: Fixed flow path component; 300f: Front panel, page 10 / 11, CN 121218915 A; 301: Recess; 302: Movable body; 310: Base; 320: Mounting shaft; 322: Threaded hole; 330: Connector; 340: Base flow path; 340out: Base outlet; 350: Gasket; 360, 360a: Second engaging part; 362: Second engaging claw; 370: Protrusion; 400, 400a: Movable flow path component; 400r: Rear surface; 430 (431~435): Inlet; 433: Inlet; 450, 450a: Clicking plate; 460, 460a: First engaging part; 462: First engaging claw; 470: Lubricating oil recess; 500: Water flow generating component; 600: Operating ring; 700: Protective cover; 810: Setting protrusion; 810a: Protrusion; 812: Setting click pin; 812a: Click pin; 814, 814a: Receiving recess; 816, 916: Spring; 830, 830a: Setting recess; 910: Switching protrusion; 912: Switching click pin; 930, 930a: Switching concave-convex part; 932, 932a: Switching recess. Instruction manual 11 / 11 page 13 CN 121218915 A Figure 1 Instruction manual figure 1 / 8 page 14 CN 121218915 A Figure 2 Instruction manual figure 2 / 8 page 15 CN 121218915 A Figure 3 Instruction manual figure 3 / 8 page 16 CN 121218915 A Figure 4 Instruction manual figure 4 / 8 page 17 CN 121218915 A Figure 5 Instruction manual figure 5 / 8 page 18 CN 121218915 A Figure 6 Instruction manual figure 6 / 8 page 19 CN 121218915 A Figure 7 Instruction manual figure 7 / 8 page 20 CN 121218915 A Figure 8 Instruction manual figure 8 / 8 page 21 CN 121218915 A.

Claims

1. A shower head, comprising: The head body has a flow path through which fluid can flow; A nozzle component disposed on the head body; and A rotating body, disposed on the nozzle component side relative to the head body, and configured to rotate relative to the head body about a predetermined axis of rotation, is characterized in that... A first engaging portion is provided in the rotating body at a position away from the rotation axis. The head body is provided with a second engaging portion that engages with the first engaging portion in the direction along the rotation axis. At least one of the first engaging portion and the second engaging portion extends circumferentially about the axis of rotation.

2. The shower head according to claim 1, characterized in that, The first engaging portion and the second engaging portion are both arc-shaped parts that are continuously connected circumferentially along an imaginary circle centered on the axis of rotation, while the other engaging portion is a shape having a plurality of engaging portions that are discontinuously arranged along the circumferential direction.

3. The shower head according to claim 1 or 2, characterized in that, One of the rotating body and the head body is positioned away from the rotation axis and has a protrusion that abuts against the other in the direction along the rotation axis.

4. The shower head according to claim 1, characterized in that, It also features a clicking mechanism that produces a clicking sensation as the rotating body rotates. The clicking mechanism has the following features: A recessed body is disposed on one of the head body and the rotating body, and has formed a plurality of recesses arranged along an imaginary circle centered on the rotation axis and passing through the engaging portions of the first engaging portion and the second engaging portion; and A protrusion that can move forward and backward relative to the recess. The clicking mechanism is configured such that, as the rotating body rotates, the protrusion moves relative to the plurality of recesses.

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