Faucet

Abstract

The present invention relates to a faucet. The present invention may comprise: a casing (20) having a channel therein; and a controller for controlling the temperature or flow rate of the water supplied through the channel. A control knob (300) is exposed to the outside of the casing (20) and rotates around a knob shaft to rotate the controller. The casing (20) is provided with a knob holder (360) and the knob holder (360) can transmit rotational force of the control knob (300) to the controller. The control knob (300) may be provided with magnetic knob attachment parts (M1), and the knob holder (360) may be provided with magnetic holder attachment parts (M2) that generate attractive force to the magnetic knob attachment parts (M1). The magnetic knob attachment parts (M1) and magnetic holder attachment parts (M2) can be aligned in the axial direction of the knob shaft.

Description

Susan

[0001] The present invention relates to a water supply.

[0002] A faucet is a device designed to supply water to a user; when a user operates the faucet, stored water or raw water supplied from an external source can be delivered to the user through the faucet's outlet. Such faucets can be used in bathrooms or kitchens.

[0003] The faucet can supply cold water and hot water from the raw water supplied from an external source to the user. The faucet can provide either cold water or hot water, or a mixed water mixture of cold water and hot water to the user. A knob is provided on the faucet for the use of the mixed water, and the user can adjust the temperature of the mixed water by rotating the knob.

[0004] Generally, the knob is used while attached to the faucet body. However, since the faucet is always used while exposed to water, water can accumulate inside the knob. This accumulated water causes unpleasant odors and induces bacterial growth, thereby compromising the hygiene of the faucet.

[0005] To resolve this, the knob can be detached from the faucet for cleaning, but fasteners such as screws must first be loosened to remove the knob from the faucet body. Therefore, conventional faucets have the disadvantage of making knob replacement inconvenient. Additionally, since fasteners such as screws are exposed externally, there is the issue of having to add a separate screw cover to conceal them.

[0006] The present invention is intended to solve the problems of the prior art as described above, and the objective of the present invention is to enable a knob for controlling water temperature or flow rate to be easily detached from the faucet body and easily reassembled.

[0007] Another objective of the present invention is to enable the knob to be detached from and assembled from the faucet without a separate fastener.

[0008] Another objective of the present invention is to ensure that the knob does not slip against the body of the faucet and that the rotational force of the knob is fully transmitted to the parts of the faucet.

[0009] According to a feature of the present invention for achieving the above-described purpose, the present invention may include a casing having an internal fluid passage and a regulator for controlling the temperature or flow rate of water supplied through the fluid passage. A control knob is exposed to the outside of the casing, and the control knob can rotate the regulator while rotating around a knob axis. A knob holder is disposed in the casing, and the knob holder can transmit the rotational force of the control knob to the regulator. At this time, the control knob may be provided with a knob magnetic coupling part, and the knob holder may be provided with a holder magnetic coupling part that generates an attractive force with the knob magnetic coupling part. The knob magnetic coupling part and the holder magnetic coupling part may be aligned with each other in the axial direction of the knob axis.

[0010] The above knob magnetic coupling part can be stored in a first component storage groove formed in the axial direction of the knob axis inside the knob holder.

[0011] One of the knob magnetic coupling part and the holder magnetic coupling part may be composed of a permanent magnet, and the other may be composed of a permanent magnet or a ferromagnetic material arranged with opposite polarity to the permanent magnet.

[0012] The above adjustment knob and the above knob holder may be provided with a knob fastening part and a holder fastening part that are coupled to each other in the axial direction of the knob axis.

[0013] The above-mentioned adjustment knob may be provided with a plurality of knob fastening parts, and the above-mentioned knob holder may be provided with a plurality of holder fastening parts. The knob magnetic coupling part may be disposed between the plurality of knob fastening parts, and the holder magnetic coupling part may be disposed between the plurality of holder fastening parts.

[0014] The adjustment knob and the knob holder may each be provided with a first contact surface and a second contact surface that are in close contact with each other. The knob magnetic coupling part may be positioned behind the first contact surface. The holder magnetic coupling part may be positioned behind the first contact surface so as to be aligned with the knob magnetic coupling part and the axial direction of the knob axis.

[0015] A plurality of the knob magnetic coupling parts may be arranged spaced apart from each other along the circumferential direction around the rotation center of the adjustment knob. A plurality of the holder magnetic coupling parts may be arranged spaced apart from each other along the circumferential direction around the center of the knob holder.

[0016] The above-described adjustment knob may include a knob body that rotates relative to the casing and a rotary coupler connecting the knob holder and the knob body. The rotary coupler is rotated by the knob body and may move relative to the knob body along the axial direction of the knob axis. The knob magnetic coupling portion may be provided in the rotary coupler.

[0017] The rotary coupler can be rotated together with the knob holder. The movement of the rotary coupler in the axial direction with the knob holder may be restricted. The knob body can be moved in the axial direction along the rotary coupler.

[0018] The knob magnetic coupling portion or the holder magnetic coupling portion may be composed of a ferromagnetic film provided on the surface of the adjustment knob or the surface of the knob holder facing each other.

[0019] The knob magnetic coupling part may be composed of a first knob magnetic coupling part and a second knob magnetic coupling part spaced apart from the first knob magnetic coupling part. The first knob magnetic coupling part and the second knob magnetic coupling part may be arranged to have different polarities toward the knob holder.

[0020] The above-described adjustment knob may include a first adjustment knob equipped with a first knob magnetic coupling part and a second adjustment knob equipped with a second knob magnetic coupling part and spaced apart from the first adjustment knob. The first knob magnetic coupling part and the second knob magnetic coupling part may be arranged to have different polarities toward the casing.

[0021] The faucet according to the present invention, as examined above, has the following effects.

[0022] The control knob constituting the faucet according to the present invention can be easily assembled to the faucet body or detached from the faucet body through the magnetic force of a magnet. Since the attachment and detachment of the control knob is easy in this way, both the assemblability and maintainability of the control knob can be improved.

[0023] Furthermore, since the control knob in the present invention is easily detachable, the user can expand the range of design choices by replacing the control knob with another control knob of a desired design. In addition, the user can enhance the functionality of the control knob by replacing it with a control knob having various functions, such as a child lock or lighting.

[0024] In addition, in the present invention, the user can easily detach the control knob without the need for a separate tool, thereby conveniently removing moisture that has entered the control knob. Accordingly, this also has the effect of enhancing the hygiene of the control knob.

[0025] In addition, since the adjustment knob in the present invention is fastened without a separate fastener, it is possible to prevent damage to the components constituting the adjustment knob due to excessive fastening torque of the tool during the assembly process of the adjustment knob.

[0026] In addition, in the present invention, when the adjustment knob and the knob holder are coupled axially to each other through magnetic force, the axially formed structures (knob fastening part / holder fastening part) can also be naturally coupled axially during this process. The axially coupled adjustment knob and knob holder can rotate together with the axial direction as the center of rotation, and the rotational force is fully transmitted to the mating part, thereby improving driving stability.

[0027] In addition, in the present invention, the polarity of a plurality of magnetic parts provided in the control knob and the knob holder is formed in reverse to prevent coupling in the opposite direction. This naturally prevents misassembly of the control knob, thereby improving ease of assembly.

[0028] In addition, by making the magnetic direction of the two control knobs equipped in the faucet different, it is also possible to prevent the assembly positions of the different control knobs from changing.

[0029] FIG. 1 is an exemplary diagram showing a shower head connected to an embodiment of a faucet according to the present invention.

[0030] FIG. 2 is a side view showing an embodiment of the faucet according to the present invention installed on a wall.

[0031] FIG. 3 is a perspective view showing an embodiment of a water tap according to the present invention.

[0032] FIG. 4 is a perspective view showing the structure of a control knob constituting an embodiment of the present invention.

[0033] FIG. 5 is an exploded perspective view of a control knob constituting an embodiment of the present invention.

[0034] FIG. 6 is a perspective view showing a control knob constituting an embodiment of the present invention disassembled and viewed from an angle different from FIG. 5.

[0035] FIG. 7 is a cross-sectional view showing the structure of a control knob constituting an embodiment of the present invention.

[0036] FIG. 8 is a perspective view showing a state in which a rotary coupler and a knob holder constituting a control knob according to an embodiment of the present invention are combined.

[0037] FIG. 9 is a perspective view showing a separated state of a rotary coupler and a knob holder constituting a control knob according to an embodiment of the present invention.

[0038] FIG. 10 is a perspective view showing a state in which a magnetic coupling part is separated from a rotary coupler and a knob holder constituting a control knob according to an embodiment of the present invention.

[0039] FIG. 11 is a perspective view showing, from a different angle from FIG. 10, the state in which the magnetic coupling part is separated from the rotary coupler and the knob holder constituting the control knob according to an embodiment of the present invention.

[0040] FIG. 12 is a perspective view showing the structure of a second embodiment of a control knob according to the present invention.

[0041] FIG. 13 is a perspective view showing the structure of a third embodiment of a control knob according to the present invention.

[0042] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0043] The present invention relates to a faucet (10). The faucet (10) of the present invention can provide raw water supplied from an external water source by treating it in various ways. The faucet (10) may include faucets used in bathrooms, such as shower faucets, and faucets used in kitchens, such as sink faucets. Additionally, the faucet (10) may be used outdoors in addition to indoors. The faucet (10) may also be applied to home appliances that supply water, such as water purifiers.

[0044] Here, raw water is water supplied from the outside and may be tap water. More specifically, the raw water may include cold water and hot water. The cold water is raw water in an unheated state, and the hot water is raw water supplied after being heated through a boiler, etc. For reference, in the following description, raw water refers to cold water and hot water introduced from the outside, mixed water refers to water in which cold water and hot water are mixed by a temperature controller (not shown), controlled water refers to water in which the flow rate is controlled by a flow rate controller (not shown), and purified water refers to water from which impurities have been filtered by a filter (160). The temperature controller and the flow rate controller may be collectively referred to as controllers.

[0045] The faucet (10) of the present invention may provide functions such as mixing cold water and hot water, purifying water, supplying power through a generator (not shown), transmitting information through a display (not shown), receiving / sending data through a communication means (not shown), automatic control through a control device, or dispensing water through a plurality of outlets. The communication means may include one or more of a Bluetooth communication module, a WiFi communication module, a Zigbee communication module, and an NFC communication module. The communication means may receive power through the generator.

[0046] The above temperature controller can adjust the mixing ratio of cold water and hot water, and the user can control the temperature controller by turning the control knob (300). In this embodiment, the control knob (300) is configured to rotate within a specific angle range. For example, the rotation range of the control knob (300) may be limited so that water at a temperature higher than the set temperature is not supplied. After changing the axial position of the control knob (300) by pushing or pulling the control knob (300), the user can turn the control knob (300) again to rotate the control knob (300) to an angle greater than the limited rotation range. Below, the coupling structure of the control knob (300) for operating the temperature controller will be described in detail.

[0047] For reference, in FIG. 1, F represents the front of the water tap (10) and R represents the rear of the water tap (10). Here, the front of the water tap (10) refers to the front of the water tap (10) far from the installation surface (W, see FIG. 2), and the rear of the water tap (10) refers to the side toward the installation surface (W).

[0048] Referring to FIG. 1, the above faucet (10) is shown being used as a bathroom faucet. In this embodiment, the above faucet (10) may include a plurality of outlets (outlet parts (OH1, OH2)). The above faucet (10) may include a first water outlet pipe (1) and a rainfall shower head (2) connected to the first water outlet pipe (1). The above shower may include a handheld shower head (4) connected to the second water outlet pipe (3). As another example, either the rainfall shower head (2) or the handheld shower head (4) may be omitted.

[0049] The above faucet (10) may be provided with a first outlet section (OH1) for discharging water downward from the faucet (10). When water is discharged downward from the faucet (10) through the first outlet section (OH1), the user can fill a bathtub (not shown) located at the bottom of the faucet (10) with water. As shown in FIG. 2, the above faucet (10) may be provided with a second outlet section (OH2) for discharging water to the rainfall shower head (2) or the hand shower head (4). The first discharge pipe (1) or the second discharge pipe (3) may be connected to the second outlet section (OH2). The user can discharge water to the first outlet section (OH1) or the second outlet section (OH2) by operating the water discharge selector (190).

[0050] FIG. 1 illustrates a first control knob (300) of a temperature controller for controlling the temperature of water. When the first control knob (300) is rotated, the temperature controller operates to determine the mixing ratio of hot and cold water, or to discharge hot or cold water without mixing. The faucet (10) may further include a second control knob (400) separate from the first control knob (300). The second control knob (400) is for operating a flow rate controller (not shown) to control the flow rate of the discharged water. When the second control knob (400) is rotated, the discharged flow rate can be controlled.

[0051] For reference, the first adjustment knob (300) and the second adjustment knob (400) can be operated in the same way. Below, a detailed description of the second adjustment knob (400) will be omitted, and the description will be based on the first adjustment knob (300). For convenience of explanation, the first adjustment knob (300) will be referred to as the adjustment knob below.

[0052] In addition to the above-mentioned control knob (300), the faucet (10) may be equipped with a water outlet selector (190). The water outlet selector (190) may allow the user to select which of the plurality of outlet sections (OH1, OH2) water will be discharged. In this embodiment, the water outlet selector (190) may have a first selection position that is pressed and a second selection position that is protruded in the opposite direction. For example, when the water outlet selector (190) is operated to the first selection position, water is discharged through the first outlet section (OH1), and when operated to the second selection position, water is discharged through the second outlet section (OH2).

[0053] Referring to FIG. 2, the above-mentioned faucet (10) is shown installed on a wall surface, which is the installation surface (W). As such, the rear surface of the above-mentioned faucet (10) faces the installation surface (W), and the above-mentioned faucet (10) can protrude from the installation surface (W). The above-mentioned faucet (10) can be fixed to the installation surface (W) through a wall-mount installation adapter (7). Accordingly, a large load due to the weight of the above-mentioned faucet (10) can be concentrated on the installation adapter (7). In this embodiment, as described below, the load applied to the installation adapter (7) can be reduced through the structure of the above-mentioned Euro guide unit (100), the arrangement of its parts, and the reinforcing plate (130). As another example, the above-mentioned faucet (10) can be stored in a storage compartment recessed in the wall. As yet another example, the lower part of the above-mentioned faucet (10) can be supported through an installation adapter (7) connected to the lower part of the above-mentioned faucet (10).

[0054] As shown in FIGS. 1 and 2, the lower part of the faucet (10) may have outlet sections (OH1, OH2) and a part of the filter (160) described later exposed. The user may grasp the exposed part of the filter (160) and detach and replace the filter section (not shown) constituting the filter (160). In this embodiment, the filter section may be mounted / detachable in the vertical direction, and this structure will be explained again below. Reference numeral 200 indicates an outlet nozzle (200) protruding from the rear of the faucet (10) and constituting the second outlet section (OH2).

[0055] Referring to FIG. 3, the handle (167) of the filter (160) described above may be exposed at the bottom of the faucet (10). The handle (167) may protrude downward from the filter (160). In this embodiment, the filter (160) may be attached to the faucet (10) by a screw fastening method. Therefore, the user can rotate the handle (167) to detach the filter part from the faucet (10) or attach it to the faucet (10).

[0056] FIG. 4 illustrates the rear structure of the control knob (300). As shown in FIG. 4, the control knob (300) can be rotated counterclockwise (arrow direction ①) or clockwise (arrow direction ②) with respect to FIG. 4. At this time, the rotation axis of the control knob (300) becomes the knob axis (RS, illustrated in FIG. 7). The knob axis (RS) can be formed concentrically with the holder boss portion (362, illustrated in FIG. 6) of the knob holder (360), which will be described below. The holder boss portion (362) is a part that is coupled to the temperature controller and can serve as the rotation center (C) of the control knob (300). The control knob (300) can rotate relative to the casing (20) while rotating around the knob axis (RS). For reference, in FIG. 4, reference numeral C indicates the rotation center that serves as the center of the knob axis (RS). In the following, the axial direction refers to the axial direction passing through the rotation center (C) (knob axial direction).

[0057] The above-mentioned control knob (300) rotates the temperature controller through a rotational movement. More precisely, the above-mentioned control knob (300) rotates the control rotor of the temperature controller to control the amount of cold water and hot water mixed. Since the operation process of the temperature controller has been explained previously, a detailed explanation will be omitted.

[0058] All or part of the adjustment knob (300) protrudes outside the casing (20). Since the adjustment knob (300) protrudes outside the casing (20), the user can grasp and rotate it. In this embodiment, the entire adjustment knob (300) protrudes forward of the front plate (40). As another example, a part of the adjustment knob (300) may be placed inside the casing (20).

[0059] The above adjustment knob (300) may move along the axial direction of the knob axis (RS) to have a plurality of axial positions. At this time, the adjustment knob (300) may be rotated around the knob axis (RS) by different angle ranges at the plurality of positions. The adjustment knob (300) may be rotated to form a first distance from the surface of the casing (20) with respect to the axial direction, or the adjustment knob (300) may be rotated to form a second distance from the surface of the casing (20) that is closer than the first distance with respect to the axial direction.

[0060] In this embodiment, the control knob (300) has a first operating position that is spaced apart from the casing (20) by a first distance with respect to the direction of the knob axis (RS) and can be rotated by a first angle range around the knob axis (RS). The control knob (300) has a second operating position that is moved from the first operating position in the axial direction of the knob axis (RS) and is spaced apart from the casing (20) by a second distance. In the second operating position, the control knob (300) is allowed to rotate further by a second angle range around the knob axis (RS) from the end of the first angle range.

[0061] Referring to FIG. 4, the first angle range and the second angle range may be formed by an adjustment slot (326) formed in the adjustment knob (300). The adjustment slot (326) includes a first adjustment slot (326a) forming the first angle range and a second adjustment slot (326b) forming the second angle range. The first adjustment slot (326a) and the second adjustment slot (326b) may be connected to each other. The rotation limiting part (47) may limit the rotation angle range of the adjustment knob (300) by interfering with one end of the first adjustment slot (326a) at the first operating position. Reference numeral 47a indicates a limiting projection protruding from the end of the rotation limiting part (47).

[0062] As shown in FIG. 4, a rotary coupler (340) may be exposed on the rear surface of the control knob (300). The rotary coupler (340) is coupled to a knob holder (360). A knob fastening portion (345) for coupling with the knob holder (360) is recessed in the rotary coupler (340). A holder fastening portion (365, shown in FIG. 8) of the knob holder (360), which will be described below, is inserted into the knob fastening portion (345), so that the rotational force of the rotary coupler (340) can be transmitted to the knob holder (360). As previously described, since the knob holder (360) is coupled to the temperature controller, the rotary coupler (340) is consequently connected to the temperature controller via the knob holder (360).

[0063] As such, the rotary coupler (340) is coupled with the knob holder (360) to (i) maintain the state in which the control knob (300) is coupled to the front of the casing (20), (ii) transmit rotational force to the knob holder (360) and the temperature controller while rotating together with the control knob (300), and (iii) guide the linear movement of the knob body (NB) in the forward and backward directions while maintaining a fixed position relative to the axial direction.

[0064] FIGS. 5 and FIGS. 6 illustrate the structure of the control knob (300) in an exploded view. For reference, FIG. 5 also illustrates a part of the casing (20). FIG. 5 illustrates the knob holder (360) mounted on the casing (20), while FIG. 6 illustrates the knob holder (360) separated from the casing (20). As shown here, the control knob (300) can be positioned in front of the front plate (40) so as to be detachable from the casing (20). The control knob (300) can be separated forward from the casing (20) without disassembling the casing (20) and the front plate (40). In this embodiment, the control knob (300) and the knob holder (360) are coupled to each other by the magnetic force of a magnet. This structure will be explained again below.

[0065] A holder mounting hole (42) for mounting the knob holder (360) may be formed in the front plate (40). A selector mounting hole (44) for placing the water outlet selector (190) for operating the faucet (10) may be formed in the front plate (40).

[0066] Referring to FIG. 5, a control knob (300) is shown separated from the front of the knob holder (360) and with each part disassembled. Even if the control knob (300) is separated, the knob holder (360) can remain connected to the temperature controller. As another example, the knob holder (360) may also be separated from the temperature controller along with the control knob (300). In this case, the knob holder (360) may also be considered as a component constituting the control knob (300). As another example, the knob holder (360) may be considered as part of the casing (20) or the temperature controller.

[0067] The above-mentioned control knob (300) may include a knob body (NB) and a rotary coupler (340). At this time, the knob body (NB) and the rotary coupler (340) may rotate together. However, the knob body (NB) and the rotary coupler (340) do not move together in the forward and backward directions. More precisely, the knob body (NB) moves linearly backward toward the front plate (40) and forward oppositely, but the rotary coupler (340) does not move together and remains fixed axially to the knob holder (360). That is, the knob body (NB) and the rotary coupler (340) move linearly relative to each other.

[0068] The skeleton of the above-mentioned adjustment knob (300) can be formed by the knob body (NB). The knob body (NB) is the part exposed to the outside of the casing (20). The knob body (NB) may have a thin cylindrical shape and a dial shape. As another example, the knob body (NB) may have various shapes, such as a polygonal shape or an elliptical shape, based on the front view.

[0069] The knob body (NB) may include a knob cover (310) having a mounting space (312, illustrated in FIG. 6) formed inside, and a knob core (320) disposed in the mounting space (312). The knob core (320) operates together with the knob cover (310), and its axial movement is guided by the rotary coupler (340). The part that the user grips is the surface of the knob cover (310), and since the knob core (320) is disposed inside the knob body (NB), it is not actually exposed to the user.

[0070] Looking at the knob cover (310) above, the side of the knob cover (310) can form a gripping portion (311). The gripping portion (311) becomes a surface that the user grips. In this embodiment, the gripping portion (311) has an uneven structure. The gripping portion (311) can also be viewed as the outer surface of the knob cover (310).

[0071] A mounting slot (313) may be formed in the knob cover (310). The mounting slot (313) is formed by penetrating the knob cover (310). An indicator (330), which will be described later, is mounted in the mounting slot (313). Corresponding to the shape of the indicator (330), the mounting slot (313) may have a roughly "L" shape. More precisely, the mounting slot (313) is formed such that a first mounting slot (313a) and a second mounting slot (313b) are connected in directions perpendicular to each other. The first mounting slot (313a) is open in the front-rear direction and can accommodate most of the indicator (330). The second mounting slot (313b) is open in the up-down direction and can accommodate the alignment protrusion (333) of the indicator (330).

[0072] Referring to FIG. 6, the knob cover (310) may be provided with a body sleeve (315). The body sleeve (315) protrudes rearward from the center of the knob cover (310). The body sleeve (315) includes a sleeve groove (316) which is an empty space in the center. A connecting protrusion (331) of the knob cover (310) and the indicator (330) is inserted into the sleeve groove (316). A cover fastener (B5) for assembly between the indicator (330) and the knob cover (310) is fastened into the connecting groove (331a) of the connecting protrusion (331).

[0073] The body sleeve (315) can be coupled with the coupler sleeve (342, illustrated in FIG. 5) of the rotary coupler (340). The body sleeve (315) and the coupler sleeve (342) can form a concentric structure and form the center of rotation (C) of the control knob (300). As shown in FIG. 7, the center of rotation (C) of the control knob (300) passes through the center of the body sleeve (315) and the coupler sleeve (342). Therefore, the body sleeve (315) and the coupler sleeve (342) can be viewed as the knob axis (RS, see FIG. 7) of the control knob (300). If the knob holder (360) is also considered as part of the control knob (300), the holder boss (362) can be viewed as the knob axis of the control knob (300).

[0074] The coupler sleeve (342) wraps around the surface of the body sleeve (315), and the body sleeve (315) and the coupler sleeve (342) rotate together when the control knob (300) is rotated. The body sleeve (315) and the coupler sleeve (342) overlap each other to help with axial alignment between the knob body (NB) and the rotary coupler (340). As another example, either the body sleeve (315) or the coupler sleeve (342) may be omitted. As yet another example, the body sleeve (315) and the coupler sleeve (342) may be directly coupled to the temperature controller.

[0075] The knob cover (310) may be provided with a catch rib (317). The catch rib (317) is for joining the knob cover (310) and the knob core (320). The catch rib (317) may be positioned around the opening edge of the mounting space (312) in the knob cover (310). The catch rib (317) protrudes radially toward the body sleeve (315). The catch rib (317) engages with the catch projection (323a) of the knob core (320), which will be described below, to prevent the knob core (320) from separating axially from the knob cover (310).

[0076] Looking at the knob core (320), the knob core (320) may have a roughly ring shape. A core hole (322) is formed in the center of the knob core (320). The rotary coupler (340) may be disposed in the core hole (322). In this embodiment, the length of the knob core (320) in the front-rear direction is shorter than the length of the rotary coupler (340) in the front-rear direction. Accordingly, during the movement of the knob body (NB) in the front-rear direction, the knob core (320) may not move away from the rotary coupler (340).

[0077] The knob core (320) is placed in the mounting space (312) so that it is not exposed unless the control knob (300) is separated from the faucet (10). The knob core (320) can form a knob body (NB) together with the knob cover (310). The knob core (320) engages with the rotary coupler (340) to transmit the rotational force of the knob body (NB) to the rotary coupler (340).

[0078] The knob core (320) can serve to (i) limit the rotational angle range of the control knob (300), (ii) guide the linear movement of the knob body (NB) in the forward and backward directions, and (iii) reinforce the strength of the knob body (NB). Limiting the rotational angle range of the control knob (300) can be achieved by the control slot (326) formed in the knob core (320). Guiding the linear movement of the knob body (NB) in the forward and backward directions can be achieved by the guide slot (329) of the knob core (320). As such, in this embodiment, the knob core (320) handles the relatively complex shape, and the knob cover (310) is implemented in a relatively simple form, thereby enhancing the aesthetic appeal of the control knob (300). This structure will be explained again below.

[0079] The knob core (320) may be provided with a ring-shaped core ring (321). The core ring (321) forms the framework of the knob core (320). The outer surface of the core ring (321) becomes the outer surface of the knob core (320). The outer surface of the knob core (320) may face the inner surface of the mounting space (312). That is, the outer surface of the knob core (320) faces the inner surface of the knob cover (310). At this time, the outer surface of the knob core (320) and the inner surface of the knob cover (310) may form a spaced-apart portion from each other. Accordingly, as shown in FIG. 7, a spaced-apart space (IS) is formed between the knob cover (310) and the knob core (320).

[0080] The above-mentioned separation space (IS) can be opened in the axial direction toward the surface of the casing (20). Here, the direction toward the surface of the casing (20) is the rear with respect to FIG. 7. Although the rear of the separation space (IS) is depicted in the drawing as being blocked by the catch rib (317), since the catch rib (317) is provided intermittently, the separation space (IS) can be opened to the rear. Moisture or foreign matter inside the separation space (IS) can be discharged through this open part. In FIG. 7, arrow ① indicates the direction in which moisture inside the separation space (IS) is discharged.

[0081] Since the above operating space is also connected to the above separation space (IS), such a change in volume can change the pressure of the above separation space (IS). The above separation space (IS) is formed between the knob cover (310) and the knob core (320), and the above separation space (IS) is connected to the above operating space through the gap between the knob cover (310) and the knob core (320). When the pressure of the above separation space (IS) changes in this way, moisture, etc. that has entered the above separation space (IS) is discharged to the rear. Of course, foreign substances such as moisture that have entered the above operating space can also be discharged to the outside of the control knob (300) by this change in pressure. That is, moisture, etc. inside the control knob (300) is naturally discharged during the process of the user pressing or pulling the above control knob (300). As described below, since the control knob (300) is moved forward by the elastic member (350), as a result, the user can remove moisture from the control knob (300) by simply pressing the control knob (300).

[0082] Referring again to FIG. 6, a core coupling portion (323) is provided on the outer surface of the core ring (321). The core coupling portion (323) is for coupling between the knob core (320) and the knob cover (310). The core coupling portion (323) protrudes from the outer surface of the core ring (321). The core coupling portion (323) may include a pair of rib structures protruding from the surface of the core ring (321). The indicator (330) may be coupled to the protruding core coupling portion (323).

[0083] Looking more closely, the core coupling portion (323) may form a groove structure extending in the front-rear direction. The core coupling portion (323) creates a groove that is open forward, and the alignment protrusion (333) of the indicator (330) enters into this groove. When the indicator (330) passes through the second mounting slot (313b) of the knob cover (310) and is coupled to the core coupling portion (323), the knob cover (310) and the knob core (320) are coupled by the indicator (330) so that they do not rotate relative to each other. Accordingly, the knob cover (310) and the knob core (320) can rotate together.

[0084] A catch projection (323a) may be provided on the outer surface of the core ring (321). In this embodiment, the catch projection (323a) is provided at a position adjacent to the core coupling portion (323). The catch projection (323a) may be positioned further back than the core coupling portion (323). The catch projection (323a) extends circumferentially along the outer surface of the core ring (321). The catch projection (317) of the knob cover (310) may engage with the catch projection (323a). More precisely, when the knob cover (310) moves backward with reference to FIG. 6, the knob core (320) is inserted into the mounting space (312). At this time, the catch projection (317) may be moved at a rotated angle so as not to interfere with the core coupling portion (323).

[0085] After the knob core (320) is inserted into the mounting space (312), when the knob cover (310) is rotated (counterclockwise with respect to FIG. 6), the locking rib (317) is positioned behind the locking jaw (323a). In this way, the locking rib (317) and the locking jaw (323a) engage with each other in the axial direction, preventing axial separation. Looking at FIG. 7, the locking jaw (323a) is relatively forward and the locking rib (317) is relatively backward. Accordingly, the knob cover (310) cannot be separated forward from the knob core (320).

[0086] In FIGS. 6 and 7, reference numeral 323b represents a limiting projection for limiting the range of relative rotation of the knob cover (310) to the knob core (320) during the process of assembling the knob cover (310) to the knob core (320). The locking rib (317) engages with the limiting projection (323b), thereby allowing the assembly angle between the knob cover (310) and the knob core (320) to be set.

[0087] At this time, as previously explained, when the indicator (330) is assembled to the knob cover (310), the indicator (330) prevents relative rotation between the knob cover (310) and the knob core (320), so that, as a result, both relative rotation and relative linear movement of the knob cover (310) and the knob core (320) can be prevented. That is, when the indicator (330) is coupled to the adjustment knob (300) in the axial direction, the indicator (330) can engage the knob cover (310) and the knob core (320) respectively to limit the relative rotation between the knob cover (310) and the knob core (320). Therefore, the indicator (330) itself can act as a kind of fastener without the need for a separate fastener.

[0088] Referring to FIGS. 6 and 7, the knob core (320) may be provided with a rotation guide (325). The rotation guide (325) surrounds the core hole (322) and has a ring shape. The rotation guide (325) has a smaller diameter than the core ring (321) of the knob core (320). Accordingly, the core ring (321) and the rotation guide (325) are spaced apart from each other. The adjustment slot (326) is formed in this spaced-apart portion. The adjustment slot (326) is formed along the circumferential direction of the knob core (320) between the core ring (321) and the rotation guide (325). The rotation limiting part (47) is inserted into the adjustment slot (326).

[0089] A step portion (327) may be provided between the first adjustment slot (326a) and the second adjustment slot (326b) constituting the adjustment slot (326). The step portion (327) interferes with the rotation limiting portion (47). The step portion (327) protrudes from the core ring (321) in a direction that narrows the diameter of the adjustment slot (326), that is, in the direction toward the center of the knob core (320). When the rotation limiting portion (47) engages with the step portion (327), the rotation of the entire adjustment knob (300) is restricted. In this embodiment, two step portions (327) are arranged in the knob core (320) so as to be spaced apart from each other in the circumferential direction.

[0090] The above adjustment knob (300) is provided with a partition (328), and the rotation limiting part (47) interferes with the partition (328). The partition (328) can limit the maximum rotation angle of the adjustment knob (300). It can also be seen that a plurality of slots constituting the adjustment slot (326) are disconnected based on the partition (328).

[0091] A guide slot (329) may be formed in the rotation guide (325). The guide slot (329) is formed in a shape in which a part of the rotation guide (325) is cut in the front-rear direction. A guide rib (349) of a rotation coupler (340), which will be described later, is inserted into the guide slot (329). When the guide slot (329) and the guide rib (349) are coupled to each other in the axial direction, the knob body (NB) can move in the axial direction along the guide rib (349). That is, when the knob body (NB) moves in the front-rear direction, it can move in a straight line without rotating relative to the rotation coupler (340).

[0092] Referring to FIG. 5, the indicator (330) is shown separated from the knob body (NB). The indicator (330) allows the user to check the rotation angle of the knob body (NB). To this end, the indicator (330) may be coupled to the knob body (NB) and may protrude or be exposed to the outside of the knob body (NB). As another example, the indicator (330) may be integrally provided with the knob body (NB).

[0093] The indicator (330) is mounted in the first mounting slot (313a) and the second mounting slot (313b). The indicator (330) may include a fastening protrusion (331) inserted into the center of the knob body (NB) and an alignment protrusion (333) placed in the second mounting slot (313). As shown in FIG. 7, the fastening protrusion (331) is fastened to the knob cover (310) by a cover fastener (B5). Reference numeral 331a is an assembly groove formed in the center of the fastening protrusion (331), and the cover fastener (B5) is fastened to the assembly groove (331a). As another example, the indicator (330) may be press-fitted or bonded to the knob body (NB).

[0094] The alignment protrusion (333) can be inserted into the second mounting slot (313) and coupled to the knob core (320). Coupling means that the alignment protrusion (333) is fitted into the core coupling portion (323, shown in FIG. 6) of the knob core (320). In this way, the alignment protrusion (333) restricts the independent rotation of the knob core (320), so that the knob core (320) can rotate together with the knob cover (310) and the indicator (330).

[0095] Referring to FIGS. 5 and FIGS. 6, the rotary coupler (340) has a roughly cylindrical shape. The rotary coupler (340) is positioned between the knob body (NB) and the knob holder (360) to transmit the rotational force of the knob body (NB) to the knob holder (360). The rotary coupler (340) can only rotate and not move in a straight line.

[0096] The coupler body (341) forming the frame of the rotary coupler (340) may have a roughly ring shape. The coupler body (341) is placed in the core hole (322) of the knob core (320). A coupler sleeve (342) is provided at the center of the coupler body (341). The coupler sleeve (342) may protrude forward, and a sleeve hole (342a), which is an empty space, may be formed at the center. The body sleeve (315) of the knob body (NB) may be inserted into the sleeve hole (342a).

[0097] The coupler body (341) and the coupler sleeve (342) have different diameters. Accordingly, the coupler body (341) and the coupler sleeve (342) are spaced apart from each other, so that a portion of the elastic member (350) can be accommodated in the space (343) between them. Referring to FIG. 7, one end of the elastic member (350) is positioned between the coupler body (341) and the coupler sleeve (342), and the other end is in close contact with the surface (311a) of the knob cover (310). Accordingly, the elastic member (350) provides elastic force to the knob body (NB) in a direction away from the rotating coupler (340) with respect to the axial direction. That is, the elastic member (350) can provide elastic force to the adjustment knob (300) in a direction from the second operating position toward the first operating position.

[0098] A knob fastening portion (345) may be recessed into the rotary coupler (340). The knob fastening portion (345) is recessed in the axial direction. A holder fastening portion (365) of a knob holder (360) is inserted into the knob fastening portion (345). When the holder fastening portion (365) is inserted into the knob fastening portion (345), the rotary coupler (340) and the knob holder (360) engage with each other to transmit rotational force.

[0099] The knob fastening portion (345) may extend radially from the rear surface of the rotary coupler (340). In this embodiment, the knob fastening portion (345) includes a plurality of knob fastening portions (345) that extend radially. A sleeve hole (342a) penetrating the coupler sleeve (342) is connected at the center where the plurality of knob fastening portions (345) are connected. As another example, the knob fastening portion (345) may have a protruding shape, and the holder fastening portion (365) may have a recessed structure. As yet another example, a separate fastening member may be assembled axially or radially between the rotary coupler (340) and the knob holder (360) so that they can rotate together.

[0100] The rotary coupler (340) may be provided with a stopper (346). The stopper (346) engages the knob body (NB) to limit the axial movement distance of the knob body (NB). The stopper (346) protrudes radially from the edge of the coupler body (341). The stopper (346) may be continuous in a circumferential direction along the edge of the coupler body (341). The stopper (346) engages the end of the rotation guide of the knob core (320) to prevent the knob body (NB) from being separated forward from the rotary coupler (340).

[0101] The stopper (346) prevents axial separation of the knob body (NB), and the knob holder (360) prevents axial separation of the rotary coupler (340) through the magnetic coupling parts (M1, M2) to be described later. As a result, the knob body (NB) is not completely separated from the knob holder (360) and can move and rotate axially while positioned in front of the knob holder (360).

[0102] Referring to FIG. 5, the rotary coupler (340) can be assembled to the knob core (320) in a positioned between the knob cover (310) and the knob core (320). During the process of assembling the rotary coupler (340) to the knob core (320), the stopper (346) may catch on the end (325a) of the knob core (320), thereby limiting the assembly depth. With the rotary coupler (340) fitted into the knob core (320), when the knob cover (310) is coupled to the knob core (320) on the opposite side of the knob core (320), the rotary coupler (340) is assembled between the knob core (320) and the knob cover (310). Of course, as previously described, the knob body (NB) and the rotary coupler (340) are assembled to each other in a state where they can move relative to one another in the axial direction.

[0103] Referring again to FIG. 7, the coupling between the knob holder (360) and the rotary coupler (340) can be achieved by magnetic coupling parts (M1, M2). The magnetic coupling parts (M1, M2) include a knob magnetic coupling part (M1) disposed on the rotary coupler (340) and a holder magnetic coupling part (M2) disposed on the knob holder (360). At least one of the knob magnetic coupling part (M1) and the holder magnetic coupling part (M2) may be composed of a permanent magnet. The other of the knob magnetic coupling part (M1) and the holder magnetic coupling part (M2) may be a permanent magnet or may be composed of a ferromagnetic material. Reference numeral CL indicates a contact surface where the knob holder (360) and the rotary coupler (340) are in close contact with each other by the magnetic coupling parts (M1, M2). The knob magnetic coupling part (M1) and the holder magnetic coupling part (M2) may also be referred to as the first magnetic coupling part (M1) and the second holder magnetic coupling part (M2), respectively. The structure of the magnetic coupling parts (M1, M2) will be explained again below.

[0104] A guide rib (349) may be provided on the outer surface of the rotary coupler (340). The guide rib (349) protrudes from the outer surface of the rotary coupler (340) and extends in the front-rear direction. The guide rib (349) is fitted into the guide slot (329) of the knob core (320). When the guide slot (329) and the guide rib (349) are coupled to each other in the axial direction, the knob body (NB) can be moved axially along the guide rib (349).

[0105] Looking at the knob holder (360) above, the knob holder (360) connects the temperature controller and the control knob (300). The knob holder (360) is coupled to the temperature controller and simultaneously coupled to the control knob (300). Accordingly, the rotational force of the control knob (300) is transmitted to the temperature controller. As shown in FIG. 5, the knob holder (360) is coupled to the temperature controller, and at least a portion of it is exposed to the front of the front plate (40).

[0106] Referring to FIG. 6, the knob holder (360) may be provided with a holder body (361) in the shape of a roughly disc. The outer surface of the holder body (361) is not protruded forward of the front plate (40) and is positioned inside the casing (20). The knob holder (360) is fixed to the casing (20) while coupled to the temperature controller. Even if the control knob (300) is separated from the casing (20), the knob holder (360) remains fixed to the casing (20).

[0107] The knob holder (360) may be provided with a holder boss portion (362). The holder boss portion (362) protrudes rearward toward the temperature controller. The holder boss portion (362) may have a cylindrical shape. The holder boss portion (362) is for coupling with the temperature controller, and a boss hole (363) is formed in the center. Serrations may be formed on the inner surface of the boss hole.

[0108] Referring again to FIG. 5, a holder fastening part (365) may be provided on the front of the knob holder (360). The holder fastening part (365) engages with the knob fastening part (345) of the rotary coupler (340). The holder fastening part (365) engages with the knob fastening part (345) to receive the rotational force of the rotary coupler (340). The holder fastening part (365) protrudes forward from the knob holder (360). In this embodiment, the holder fastening part (365) extends radially from the center of the knob holder (360). The holder fastening part (365) may be composed of a plurality of holder fastening parts (365), and in this embodiment, a total of three holder fastening parts (365) protrude from the front of the knob holder (360).

[0109] Referring to FIGS. 8 and 9, the rotary coupler (340) and the knob holder (360) are shown in a coupled state. As can be seen, the rotary coupler (340) and the knob holder (360) are in close contact with each other in the axial direction, so that they can rotate together in a close contact state. FIG. 8 only shows the knob magnetic coupling part (M1) provided on the rotary coupler (340) at an angle. The knob magnetic coupling part (M1) generates an attractive force with the holder magnetic coupling part (M2) provided on the knob holder (360). More precisely, the knob magnetic coupling part (M1) and the holder magnetic coupling part (M2) generate an attractive force with each other in the axial direction. Accordingly, the knob holder (360) can pull the rotary coupler (340) and the knob body (NB) in the axial direction to fix them.

[0110] As shown in FIG. 9, the rotary coupler (340) and the knob holder (360) are shown separated from each other. As can be seen, when the rotary coupler (340) and the knob holder (360) are separated from each other in the axial direction, the knob connecting part (345) of the rotary coupler (340) and the holder connecting part (365) of the knob holder (360) are aligned in the axial direction. When the rotary coupler (340) and the knob holder (360) separated in this way are brought close together, the knob magnetic connecting part (M1) and the holder magnetic connecting part (M2) generate an attractive force with each other, and the holder connecting part (365) of the knob holder (360) can be inserted into the knob connecting part (345) of the rotary coupler (340).

[0111] The above-described adjustment knob (300) may be provided with a plurality of knob connecting parts (345), and the above-described knob holder (360) may be provided with a plurality of holder connecting parts (365). At this time, the knob magnetic coupling part (M1) may be positioned between the plurality of knob connecting parts (345). The holder magnetic coupling part (M2) may be positioned between the plurality of holder connecting parts (365). In this embodiment, a total of three knob connecting parts (345) are provided on the rotary coupler (340), and two knob magnetic coupling parts (M1) are positioned between adjacent knob connecting parts (345). Likewise, in this embodiment, a total of three holder connecting parts (365) are provided on the rotary coupler (340), and two holder magnetic coupling parts (M2) are positioned between adjacent holder connecting parts (365).

[0112] A plurality of the knob magnetic coupling parts (M1) may be arranged spaced apart from each other along the circumferential direction around the rotation center of the control knob (300). Referring to FIG. 10, two knob magnetic coupling parts (M1) are arranged around the rotation center (C) of the control knob with a 180-degree phase difference from each other. A plurality of the holder magnetic coupling parts (M2) may be arranged spaced apart from each other along the circumferential direction around the center of the knob holder (360). Referring to FIG. 11, two holder magnetic coupling parts (M2) are arranged around the rotation center (C) of the knob holder with a 180-degree phase difference from each other.

[0113] Referring again to FIG. 7, the adjustment knob (300) and the knob holder (360) may each be provided with a first contact surface and a second contact surface that are in close contact with each other. Reference numeral CL indicates a planar portion formed by the first contact surface and the second contact surface. At this time, the knob magnetic coupling part (M1) may be positioned behind the first contact surface. The knob magnetic coupling part (M1) may be aligned with the knob magnetic coupling part (M2) in the axial direction of the knob axis at the rear of the first contact surface.

[0114] Referring to FIGS. 10 and 11, the knob magnetic coupling part (M1) is inserted into the first component storage groove (347) formed in the rotary coupler (340). The holder magnetic coupling part (M2) is inserted into the second component storage groove (367) of the knob holder (360), which will be described later. These are aligned axially with each other to increase the magnitude of the magnetic force. At this time, the first component storage groove (347) may be positioned behind the contact surface (CL, see FIG. 7). The second component storage groove (367) may also be positioned behind the contact surface (CL, see FIG. 7).

[0115] Although not illustrated, the knob magnetic coupling part (M1) may include a first knob magnetic coupling part and a second knob magnetic coupling part spaced apart from the first knob magnetic coupling part. In this case, the first knob magnetic coupling part and the second knob magnetic coupling part may have different polarities toward the knob holder. In this case, when a user assembles the control knob (300) to the knob holder (360) in a rotated state from the forward direction, a repulsive force is generated between the two magnetic coupling parts (M1, M2), preventing assembly.

[0116] As another example, the control knob (300) may include a first control knob (300) equipped with a first knob magnetic coupling part and a second control knob (400) spaced apart from the first control knob. In this case, the first knob magnetic coupling part and the second knob magnetic coupling part may be arranged to have different polarities toward the casing. In this way, if the first control knob (300) and the second control knob (400) are assembled in reverse, a repulsive force is generated between the two magnetic coupling parts (M1, M2), preventing assembly. Here, the first control knob (300) may be for operating the temperature controller, and the second control knob (400) may be for operating the flow controller.

[0117] Although not illustrated, the knob magnetic coupling part (M1) or the holder magnetic coupling part (M2) may be composed of a ferromagnetic film provided on the surface of the control knob (300) or the surface of the knob holder (360) facing each other. For example, the knob magnetic coupling part (M1) may be composed of a metal film that is a ferromagnetic material. In this case as well, a magnetic force may act between the knob magnetic coupling part (M1) and the holder magnetic coupling part (M2), which is a permanent magnet, so that the parts can be assembled.

[0118] FIG. 12 illustrates a rotary coupler (340) constituting another embodiment of the present invention. As shown in the figure, the rotary coupler (340) may be equipped with a total of three knob magnetic coupling parts (M1). The three knob magnetic coupling parts (M1) may be arranged circumferentially around the center of the rotary coupler (340).

[0119] FIG. 13 illustrates a rotary coupler (340) constituting another embodiment of the present invention. As shown in the figure, the rotary coupler (340) may be equipped with a total of two knob magnetic coupling parts (M1). The two knob magnetic coupling parts (M1) may not be circular but may have an elliptical shape. These elliptical knob magnetic coupling parts (M1) may be arranged circumferentially around the center of the rotary coupler (340).

[0120] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. Casing having a Euro inside; A regulator disposed in the above casing and controlling the temperature or flow rate of water supplied through the above flow path; A control knob exposed to the outside of the above casing and rotating the regulator while rotating around a knob axis; and It is configured to include a knob holder disposed in the above casing, coupled with the above adjustment knob, and transmitting the rotational force of the above adjustment knob to the above adjuster. A water tap having a knob magnetic coupling part in the above-mentioned control knob and a holder magnetic coupling part that generates an attractive force between the knob magnetic coupling part and the above-mentioned knob holder.

2. The receiving portion of claim 1, wherein the knob magnetic coupling portion and the holder magnetic coupling portion are aligned with each other in the axial direction of the knob axis.

3. The water supply according to claim 1, wherein the knob magnetic coupling portion is received in a first component receiving groove formed in the axial direction of the knob axis inside the control knob.

4. A receiver according to claim 1, wherein either of the knob magnetic coupling part and the holder magnetic coupling part is composed of a permanent magnet, and the other is composed of a permanent magnet or a ferromagnetic material arranged with opposite polarity to the permanent magnet.

5. A faucet according to claim 1, wherein the adjustment knob and the knob holder are provided with a knob fastening part and a holder fastening part that are coupled to each other in the axial direction of the knob axis.

6. In claim 5, the adjustment knob is provided with a plurality of knob fastening parts, and the knob holder is provided with a plurality of holder fastening parts. A receiving device in which the knob magnetic coupling part is disposed between a plurality of the knob fastening parts, and the holder magnetic coupling part is disposed between a plurality of the holder fastening parts.

7. In claim 1, the adjustment knob and the knob holder are each provided with a first contact surface and a second contact surface that are in close contact with each other, and The above knob magnetic coupling part is positioned at the rear of the first contact surface, and A receiving member positioned at the rear of the first contact surface so as to be aligned with the knob magnetic coupling member and the axial direction of the knob axis.

8. In claim 1, the plurality of knob magnetic coupling portions are arranged spaced apart from each other along the circumferential direction around the rotation center of the adjustment knob, and A plurality of the above-mentioned holder magnetic coupling parts are arranged spaced apart from each other along the circumferential direction around the center of the knob holder.

9. In claim 1, the adjustment knob A knob body that rotates relative to the above casing; and A rotary coupler connecting the knob holder and the knob body, rotated by the knob body, and moved relative to the knob body along the axial direction of the knob axis; The above knob magnetic coupling part is a receiver provided in the above rotary coupler.

10. In claim 9, the rotary coupler is rotated together with the knob holder, and The above rotary coupler is restricted from moving in the axial direction with the knob holder, and The above knob body is a receiver that moves axially along the above rotary coupler.

11. A receiving device according to claim 1, wherein the knob magnetic coupling portion or the holder magnetic coupling portion is composed of a ferromagnetic film provided on the surface of the control knob or the surface of the knob holder facing each other.

12. In claim 1, the knob magnetic coupling portion First knob magnetic coupling part; and It is composed of a second knob magnetic coupling part spaced apart from the first knob magnetic coupling part; and A receiving device in which the first knob magnetic coupling part and the second knob magnetic coupling part are arranged to have different polarities toward the knob holder.

13. In claim 1, the adjustment knob A first control knob equipped with a first knob magnetic coupling part; and A second knob magnetic coupling part is provided, and a second adjustment knob is spaced apart from the first adjustment knob; comprising A water receiver in which the first knob magnetic coupling part and the second knob magnetic coupling part are arranged to have different polarities toward the casing.

14. A water supply according to claim 1, wherein the adjustment knob has an adjustment slot formed between the rotation guide of the knob core and the core ring to limit the rotation range of the adjustment knob, the rotation limiting part of the casing is inserted into the adjustment slot to limit the rotation range of the adjustment knob, and the adjustment slot is provided with a stepped part that interferes with the rotation limiting part.

15. In claim 1, a guide slot is formed in the knob core that is cut in the front-rear direction, and a guide rib extending in the front-rear direction is formed on the outer surface of the rotary coupler, and the guide slot and the guide rib are coupled axially to guide the axial linear movement of the knob body of the adjustment knob, and the rotary coupler is restricted from axial movement relative to the knob holder.

16. The receiving device according to claim 1, wherein the adjusting knob is provided with a plurality of knob magnetic coupling parts spaced apart in the circumferential direction around the knob axis, and the knob holder is provided with a plurality of holder magnetic coupling parts spaced apart in the circumferential direction to face the knob magnetic coupling parts, and at least two of the knob magnetic coupling parts are arranged with a 180-degree phase difference from each other and have different polarities.

17. In claim 3, a second component storage groove extending in the axial direction of the knob axis is further formed inside the knob holder, and the holder magnetic coupling part is stored in the second component storage groove, and the first component storage groove and the second component storage groove are aligned with each other in the axial direction of the knob axis.

18. The rotary coupler of claim 9 comprises a coupler sleeve having a sleeve hole at its center, and the adjustment knob comprises a body sleeve inserted into the sleeve hole, wherein the body sleeve is rotatably coupled with the coupler sleeve.

19. A receiving device according to claim 1, wherein a mounting slot is formed in the knob cover of the control knob for mounting an indicator, the indicator is provided with an alignment protrusion, and the alignment protrusion is coupled to a core coupling portion of the knob core to prevent relative rotation between the knob cover and the knob core.

20. A water supply according to claim 9, wherein an elastic member acting axially to elastically return the knob body to an initial position is interposed between the knob body and the rotary coupler.

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