JP7377120B2 - water purifier - Google Patents

Description

The present invention relates to a water purifier.

Water purifiers aimed at removing impurities such as chlorine contained in tap water (raw water) are widely used. For example, Patent Document 1 discloses a water purifier having a structure in which a purified water outlet is disposed inside a main body casing, and a tip of the outlet opens inside the lower surface of the main body casing.

Japanese Patent Application Publication No. 2009-148662

However, the above-mentioned related technologies have the following problems.
Many water purifiers, such as the water purifier disclosed in Patent Document 1, have a discharge port opening on the lower surface of the main body casing, so there is a problem that it is difficult to clean the discharge port.
On the other hand, the raw water outlet may be removably attached to the main body, for example, for the purpose of maintenance to prevent clogging of the raw water shower. In this case, a discharge cap that integrates the discharge ports of the raw water and the raw water shower is removably attached to, for example, a bayonet provided inside the main body. Since the discharge cap includes the discharge port for the raw water shower, it has a large diameter and has a large amount of rotation when being attached and detached. A lever-shaped knob protrudes from the side of the discharge cap for rotating the discharge cap to attach and detach it.
Such a structure for attaching and detaching the discharge port has a problem in that it is difficult to save space in the water purifier because the area occupied by the knob and its rotation range extend to the sides of the water purifier.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a water purifier whose discharge port can be easily attached and detached and whose size can be reduced.

In order to solve the above problems, a water purifier according to a first aspect of the present invention is a water purifier that filters and discharges supplied raw water, and includes a filter cartridge that filters the raw water, and a filter cartridge that is attached to the filter cartridge. a cover that forms a lower surface of the main body and has an opening that opens downward; a purified water flow path flowing toward the main body, and a purified water discharge section that is detachably attached to the opening of the case and discharges the purified water flowing through the purified water flow path to the outside of the main body , The downstream end of the flow path is a tube with a cylindrical outer circumference, and an annular packing having an inner diameter into which the outer circumference of the tube can be press-fit is disposed on the inner circumference of the purified water discharge part. In the packing, the thickness of the outer circumferential portion that contacts the inner circumferential surface of the purified water discharge portion is thicker than the thickness of the inner circumferential portion that contacts the outer circumferential surface of the pipe.

According to the water purifier of the second aspect of the present invention, in the water purifier of the first aspect, the opening includes a hole into which the end of the purified water discharge part is inserted, and a hole in which the end is engaged. A first engaging part is formed at the end of the purified water discharge part, and the purified water discharge part is inserted into the hole part, and the purified water discharge part extends along the inner circumferential surface of the opening. A second engaging portion that can be engaged with the first engaging portion in a first direction intersecting the lower surface may be formed by rotation.

According to the water purifier of the third aspect of the present invention, in the water purifier of the second aspect, the second engaging part has an engaging protrusion that projects outward from the outer peripheral surface of the purified water discharge part. However, the hole portion and the first engagement portion may be a bayonet mount capable of engaging and disengaging the engagement protrusion.

According to the water purifier of the fourth aspect of the present invention, in the water purifier of the third aspect, the outer circumference of the purified water discharge part has an opening into which the engaging protrusion is inserted from below among the holes. A flange portion may be provided to cover the mount from below when engaged with the bayonet mount.

According to the water purifier of the fifth aspect of the present invention, in the water purifier of the third or fourth aspect, the outer circumferential surface of the distal end in the protruding direction of the engaging protrusion has a recess in a part of the circumferential direction. may be formed, and a convex portion that fits into the recess when the engaging protrusion and the first engaging portion are engaged may be formed on the inner circumferential surface of the hole.

According to the water purifier according to the sixth aspect of the present invention, in the water purifier according to any one of the first to fifth aspects, the purified water discharge part has a cylindrical part that protrudes below the lower surface. However, the outer peripheral portion of the cylindrical portion may be formed with flat portions that face each other in the radial direction.

According to the water purifier according to the seventh aspect of the present invention, in the water purifier according to any one of the first to sixth aspects, the lower surface of the cover includes a portion of the purified water discharge portion around the opening. A first mark may be provided to indicate the arrangement when installed, and a second mark may be provided on the purified water discharge portion at a position radially opposite to the first mark in the arrangement.

According to the present invention, it is possible to provide a water purifier whose discharge port can be easily attached and detached and whose size can be reduced.

1 is a schematic perspective view showing an example of a water purifier according to a first embodiment of the present invention. 1 is a schematic perspective view showing an example of a water purifier according to a first embodiment of the present invention. 2 is a sectional view taken along line F3-F3 in FIG. 1. FIG. 2 is a schematic perspective view showing a cross section taken along line F4-F4 in FIG. 1. FIG. FIG. 2 is an exploded perspective view of a purified water discharge section in the water purifier according to the first embodiment of the present invention. 4 is an enlarged view of the vicinity of a purified water discharge section and a raw water discharge section in FIG. 3. FIG. It is a typical perspective view of a purified water discharge part in a water purifier concerning a 1st embodiment of the present invention. 2 is a view from A in FIG. 1. FIG. FIG. 2 is a schematic perspective view showing a mounting part of a purified water discharge part in the water purifier according to the first embodiment of the present invention. FIG. 2 is a schematic partial cross-sectional view showing the arrangement of the purified water discharge section in the water purifier according to the first embodiment of the present invention when installed. FIG. 2 is a schematic front view showing an example of an attachment/detachment jig for the purified water discharge part in the water purifier according to the first embodiment of the present invention. It is a typical perspective view showing an example of a raw water discharge part in a water purifier concerning a 1st embodiment of the present invention. FIG. 2 is a schematic plan view showing an example of a raw water discharge section in the water purifier according to the first embodiment of the present invention. FIG. 2 is a schematic plan view showing an example of a shower discharge plate in the water purifier according to the first embodiment of the present invention. FIG. 2 is a schematic plan view showing an example of a shower discharge plate in the water purifier according to the first embodiment of the present invention. It is a typical perspective view showing an example of the water purifier concerning the 2nd embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In all the drawings, the same reference numerals are given to the same or corresponding members, and common explanations are omitted.

(First embodiment)
A water purifier according to a first embodiment of the present invention will be described.
FIG. 1 is a schematic perspective view showing an example of a water purifier according to a first embodiment of the present invention. FIG. 2 is a schematic perspective view showing an example of the water purifier according to the first embodiment of the present invention. FIG. 3 is a sectional view taken along line F3-F3 in FIG. FIG. 4 is a schematic perspective view showing a cross section taken along line F4-F4 in FIG. However, in FIG. 4, illustration of the cartridge 2 is omitted.

As shown in FIG. 1, the water purifier 100 of the present embodiment is a so-called faucet direct-connection type water purifier that is connected to a water faucet or the like.
The water purifier 100 is connected to the upper part and receives supply of raw water W1, such as tap water, from a faucet (not shown).
As shown in FIG. 2, the water purifier 100 converts the supplied raw water W1 into one of straight raw water W2, shower-shaped raw water W3, and purified water W4 obtained by filtering the raw water W1 from the bottom side of the water purifier 100. It can be discharged in the following manner.

Below, unless otherwise specified, the configuration of each member in the water purifier 100 will be described based on the posture when the water purifier 100 is connected to a faucet extending vertically downward.
When referring to relative positions in the water purifier 100, the X1 direction, X2 direction, Y1 direction, Y2 direction, Z1 direction, and Z2 direction shown in the figure may be used. The X1 direction is a direction from left to right when standing in front of the water purifier 100. The X2 direction is the opposite direction to the X1 direction. The Y1 direction is a direction from the back of the water purifier 100 to the front. The Y2 direction is the opposite direction to the Y1 direction. The Z1 direction is a vertically upward direction. The Z2 direction is a vertically downward direction. When the direction does not matter whether the direction is the X1 (Y1, Z1) direction or the X2 (Y2, Z2) direction, or when both directions are included, it is simply referred to as the X (Y, Z) direction.
A plane with a normal line in the X direction is called a YZ plane, a plane with a normal line in the Y direction is called a ZX plane, and a plane (horizontal plane) with a normal line in the Z direction is called an XY plane.

As shown in FIG. 1, the water purifier 100 includes a main body 1, a cartridge 2 (filtration cartridge), a switching lever 1D, a display 3, and an operation button 4.

The main body portion 1 has a substantially L-shaped outer shape when viewed from the Z2 direction. The main body portion 1 has a front portion 1X extending in the X1 direction, and a rear portion 1Y protruding in the Y2 direction from the end of the front portion 1X in the X2 direction. The front portion 1X has a substantially rectangular parallelepiped shape. As shown in FIG. 2, the rear portion 1Y has a substantially cylindrical shape when viewed from the X1 direction.
As shown in FIGS. 1 and 2, the outer surface of the main body 1 is covered with an exterior cover including an upper cover 1A, a lower cover 1B (cover), and a side cover 1S (see FIG. 2).
The upper cover 1A and the lower cover 1B can be separated in the Z direction along a dividing line L formed near the end of the front portion 1X in the Z2 direction.

The upper cover 1A extends over the front part 1X and the rear part 1Y, and forms the upper surface 1a (upper surface part) of the front part 1X and the rear part 1Y. The upper surface 1a has a planar shape parallel to the XY plane.
A circular opening seen from the Z2 direction is formed at the end in the X2 direction of the upper cover 1A that covers the front part 1X, and a part of the first structure 11, which will be described later, is formed into a columnar shape from inside. It stands out.
A raw water inlet E1 through which raw water W1 flows is formed in the center of the first structure 11 protruding from the upper cover 1A. Similarly, a fixing part 1C is detachably fixed to the side surface of the first structure 11. The fixing part 1C fixes the main body part 1 to a faucet (not shown) at a position facing the raw water inlet E1 in the Z direction.
In the upper cover 1A that covers the front portion 1X, an opening 1f through which a display portion 3, which will be described later, is exposed upward is formed in a portion adjacent to the fixed portion 1C in the X1 direction.

As shown in FIG. 2, the lower cover 1B includes, in the front portion 1X, a flat portion 1b parallel to the upper surface 1a, and a stepped portion 1c protruding from the flat portion 1b in the Z2 direction. In the rear part 1Y, the lower cover 1B includes a cylindrical part 1d forming the lower half of the rear part 1Y.
The lower surface of the stepped portion 1c includes a first lower surface 1g (lower surface) in the X2 direction and a second lower surface 1i adjacent to the first lower surface 1g in the X1 direction. The second lower surface 1i has a lower height in the Z2 direction than the first lower surface 1g.
A first opening 11c1 (opening) and a second opening 11c2 are formed in this order on the first lower surface 1g in the X1 direction. A third opening 11c3 is formed in the second lower surface 1i.
A purified water discharge section 20, a raw water discharge section 30, and a battery cover 40 are arranged in this order in the first opening 11c1, the second opening 11c2, and the third opening 11c3, respectively.
The purified water discharge part 20 is formed with a purified water discharge port E13 that opens in the Z2 direction and discharges purified water W4.
The raw water discharge part 30 is formed with a straight discharge port E11 that discharges the raw water W2 and a shower discharge port E12 that discharges the raw water W3. The straight outlet E11 and the shower outlet E12 are both open in the Z2 direction.
The straight discharge port E11 is formed by a cylindrical straight discharge part 31 extending in the Z direction at the center of the raw water discharge part 30.
The shower outlet E12 is formed by a shower outlet plate 32 extending laterally from the outer circumference of the straight outlet part 31. The shower discharge plate 32 has a plurality of discharge holes passing through the shower discharge plate 32 in the thickness direction for discharging the raw water W1 that has flowed into the shower discharge plate 32 in the form of a shower.
The battery cover 40 covers the battery 41 disposed within the main body 1. The battery 41 supplies power to the display section 3 and the like. For example, the battery 41 is most commonly a button-type or coin-type battery, but a pin-type, gum-type, etc. may also be used.

At the lower end of the cylindrical portion 1d, a wall-shaped switch guard 1e that surrounds a circular area when viewed from below protrudes in the Z2 direction. A bottomed circular hole is formed inside the switch guard 1e. A reset switch 1E protrudes in the Z1 direction from the center of the bottom of the circular hole.
The reset switch 1E is an operation unit used by the user to reset the calculated value of the integrated flow rate, which will be described later. In order to prevent erroneous operation of the reset switch 1E, the tip end surface of the switch guard 1e in the protruding direction protrudes from the bottom of the hole to about the same height as the reset switch 1E.

The side cover 1S covers the end of the main body 1 in the X2 direction between the upper cover 1A and the lower cover 1B. The side cover 1S forms a side surface parallel to the YZ plane of the main body 1 in the X2 direction.

A cartridge 2 is attached to the end of the rear portion 1Y of the main body 1 in the X1 direction. The cartridge 2 has a cylindrical outer shape extending in the X1 direction.
The cartridge 2 allows the raw water W1 that has flowed into the main body 1 to flow through the raw water inlet, filter it, and then return it to the main body 1 through the purified water outlet.
Between the raw water inlet and the purified water outlet in the cartridge 2, one or two types of filtration media such as hollow fiber membranes, activated carbon, zeolite, ion exchange fibers, filters, and strainers are installed to filter the raw water W1. The above is accommodated.
For example, the cartridge 2 may be attached to the main body 1 so that it cannot be replaced by the user. However, in this embodiment, the cartridge 2 is removable by user operation. For example, the cartridge 2 is removably fixed to a second structure 12, which will be described later, inside the main body 1 by fitting the cartridges into protrusions and recesses. Therefore, the user can, for example, replace the cartridge 2 that has reached the end of its lifespan with an unused cartridge 2.

As shown in FIG. 3, inside the main body 1, a first structure 11, a second structure 12, and a third structure 13 are arranged.
The first structure 11 is disposed in the front part 1X below the lower part of the fixed part 1C.
The upper part of the first structure 11 has a columnar shape extending in the Z1 direction. A recess 11a is formed in the center of the upper part of the first structure 11, in which an annular packing 16 for shutting off water at the tip of the faucet is disposed. A raw water inlet E1 is formed in the center of the recess 11a, and a first raw water flow path P1 extends from the raw water inlet E1 in the Z2 direction. Raw water W1 can flow in the Z2 direction through the first raw water flow path P1.
In the first structure 11, a cylindrical rotor accommodation hole 11b extending in the Y direction is formed below the first raw water flow path P1. The lower end of the first raw water flow path P1 is opened at the inner circumferential surface of the rotor accommodation hole 11b on the Z1 direction side.

A straight channel P2 extending in the Z2 direction and a shower channel P3 are opened in the inner circumferential surface of the rotor accommodation hole 11b on the Z2 direction side.
The straight flow path P2 is a flow path for discharging the raw water W1 as raw water W2 in a straight shape. The straight channel P2 is provided below the first raw water channel P1. The straight flow path P2 is surrounded by a tubular portion 11d extending in the Z2 direction from the outer peripheral surface of the rotor accommodation hole 11b on the Z2 direction side. A lower end portion of the tubular portion 11d communicates with a straight discharge portion 31 of the raw water discharge portion 30.

The shower flow path P3 is a flow path for discharging the raw water W1 as raw water W3 in a shower shape. The shower flow path P3 is formed at a position adjacent to the straight flow path P2 in the X2 direction. The shower flow path P3 opens into an annular recess 11f at the lower end of the first structure 11 when viewed from the Z1 direction.
The recess 11f is formed between the tubular portion 11d and a tubular wall portion 11e that surrounds the side of the tubular portion 11d and extends in the Z2 direction to the second opening 11c2.
The recess 11f is covered from below by a shower discharge plate 32 of the raw water discharge section 30 that closes the second opening 11c2. The raw water W1 flowing into the recess 11f is discharged in the form of a shower through the plurality of discharge holes of the shower discharge plate 32.
The detailed configuration of the shower discharge plate 32 will be described later.

A cartridge inflow channel P4 is opened on the inner peripheral surface of the rotor accommodation hole 11b on the Y2 direction side. The cartridge inflow channel P4 communicates with the raw water inlet of the cartridge 2 through the inside of the first structure 11 and the second structure 12.

A switching rotor 14 and a rotor press plate 17 are arranged inside the rotor housing hole 11b.
The switching rotor 14 has a cylindrical drum part 14a extending in the X1 direction along the axial direction of the rotor accommodation hole 11b, and a rotating shaft part 14b extending in the X2 direction from the center of the end surface of the drum part 14a in the X2 direction. .
The switching rotor 14 is arranged so as to be rotatable around the central axis of the rotor housing hole 11b.
The end of the rotating shaft portion 14b in the X2 direction is fixed to a switching lever 1D, which will be described later. The switching rotor 14 is interlocked with the rotation of the switching lever 1D in the YZ plane.
The rotor press plate 17 slidably contacts the end of the drum portion 14a in the X1 direction at the end of the rotor housing hole 11b in the X1 direction, and presses the end of the drum portion 14a in the X1 direction.
A packing 17a is arranged between the side surface of the rotor holding plate 17 and the inner peripheral surface of the rotor housing hole 11b. The packing 17a liquid-tightly seals the opening in the X1 direction of the rotor housing hole 11b.

The drum portion 14a has an inlet communication port E2, a straight flow path communication port E3 (see the two-dot chain line), a shower flow path communication port E4, and a cartridge flow path communication port E5 that penetrate in the radial direction of the drum portion 14a. There is.

The inlet communication port E2 allows raw water W1 to flow in from the first raw water flow path P1. The inlet communication port E2 is formed at a position that can face the opening on the lower end side of the first raw water flow path P1 in the axial direction of the drum portion 14a.
The inlet communication port E2 is a long hole having a constant length in the radial direction. The lateral width of the inlet communication port E2 is approximately the same as the inner diameter of the first raw water flow path P1.

The straight channel communication port E3 is located on the front side of the paper in FIG. 3 on the circumference along which the central axis of the inlet communication port E2 in the longitudinal direction extends. The straight channel communication port E3 is formed at a position facing the inlet communication port E2 across the central axis of the drum portion 14a. The straight channel communication port E3 is a circular hole having an inner diameter comparable to the inner diameter of the upper end of the straight channel P2.
In the state shown in FIG. 3, the straight channel communication port E3 and the opening in the inner circumferential surface of the rotor accommodation hole 11b of the straight channel P2 do not face each other. However, when the drum part 14a is rotated so that the straight channel communication port E3 and the opening of the straight channel P2 are opposed to each other, the first raw water channel P1 and the shower channel P3 are connected to the inlet communication port E2. and communicate through the straight channel communication port E3.

The shower passage communication port E4 is formed at a position that can face the opening in the inner peripheral surface of the rotor accommodation hole 11b of the shower passage P3. The shower channel communication port E4 is a circular hole having an inner diameter comparable to the inner diameter of the upper end of the shower channel P3.
As shown in the figure, when the straight channel communication port E3 and the opening of the straight channel P2 are opposed to each other, the inlet communication port E2 is opposed to the opening at the lower end of the first raw water channel P1. .
Therefore, the first raw water flow path P1 and the shower flow path P3 communicate with each other through the inlet communication port E2 and the shower flow path communication port E4.

The cartridge passage communication port E5 is formed at a position where it can face the opening in the inner circumferential surface of the rotor accommodation hole 11b of the cartridge inflow passage P4. The cartridge channel communication port E5 is a circular hole having an inner diameter comparable to the inner diameter of the opening in the inner peripheral surface of the rotor accommodation hole 11b of the cartridge inflow channel P4.
In the state shown in FIG. 3, the cartridge passage communication port E5 and the opening in the inner peripheral surface of the rotor accommodation hole 11b of the cartridge inflow passage P4 do not face each other. However, when the drum portion 14a is rotated so that the cartridge passage communication port E5 and the opening of the cartridge inflow passage P4 face each other, the first raw water passage P1 and the cartridge inflow passage P4 are inlet communication The port E2 communicates with the cartridge flow path communication port E5.

The circumferential positions of the straight flow path communication port E3, the shower flow path communication port E4, and the cartridge flow path communication port E5 and the circumferential length of the inlet communication port E2 are as follows: The first raw water flow path P1 is configured to be able to communicate with only one of the straight flow path P2, the shower flow path P3, and the cartridge inflow flow path P4 when E2 faces the first raw water flow path P1. There is.
The side face of the first structure 11 in the Three engagement holes 11g are formed in the.

In the first structure 11, a purified water discharge passage P6 extending in the Z1 direction and a purified water passage P5 extending in the Y2 direction from the upper end of the purified water discharge passage P6 are formed above the purified water discharge part 20. . The water purification channel P5 also extends inside the second structure 12 (see FIG. 4).
The purified water flow path P5 and the purified water discharge flow path P6 guide the purified water W4 that has been filtered by the cartridge 2 and flows out from the purified water outlet of the cartridge 2 to the purified water outlet E13.

The second structure 12 is arranged inside the rear part 1Y and the front part 1X. The second structure 12 is adjacent to the first structure 11 in the X2 direction of the first structure 11 in the front portion 1X.
As shown in FIG. 4, a connecting portion 12a to which the cartridge 2 is detachably connected is provided on the X1 direction side of the second structure 12 in the rear portion 1Y.
The connecting portion 12a is formed with a raw water inlet and a purified water outlet that are formed at the end of the cartridge 2 in the X2 direction, and a raw water supply port and a purified water inlet E7 that are communicatively connected to each other.
The raw water supply port of the connecting portion 12a and the end of the cartridge inflow channel P4 of the first structure 11 in the X2 direction communicate with each other through a raw water channel P7 formed in the second structure 12.
The purified water inlet E7 communicates with the end of the purified water channel P5 in the second structure 12.

An impeller 15 that is rotated by the purified water W4 flowing through the purified water channel P5 is arranged inside the purified water channel P5. The impeller 15 is part of the flow meter 10 that measures the flow rate of purified water W4.
The flow meter 10 further includes a rotation detection section (not shown) that detects the rotation speed of the impeller 15. The configuration of the rotation detection section is not particularly limited as long as the rotation speed of the impeller 15 can be detected. For example, as the rotation detection section, a magnet disposed on the impeller 15 and a magnetic detection sensor such as a reed switch that detects the rotation speed of the magnet may be used.

As shown in FIG. 3, the third structure 13 is disposed on the X1 direction side of the first structure 11 inside the front portion 1X.
The third structure 13 includes a support section 13a that supports the lower part of the display section 3, which will be described later, and a battery holder section 13b that holds the battery 41 below the support section 13a.
The battery holder portion 13b is a hole portion that opens downward. A female screw 13c, into which the battery cover 40 is screwed, is formed on the inner peripheral surface of the battery holder portion 13b.

The battery cover 40 is formed with a male screw 40a and a slit 40b.
The male thread 40a is formed on the outer peripheral surface at the end in the Z1 direction.
The slit 40b is a concave portion recessed in an arc shape from the surface of the battery cover 40 in the Z2 direction in the Z1 direction. The slit 40b is a straight line that passes through the center of the battery cover 40 and extends in the radial direction when viewed from the Z1 direction (see FIG. 2). The slit 40b is used to screw the battery cover 40 into and out of the battery holder portion 13b. The slit 40b allows insertion of a plate-shaped tool for screwing or a plate member having an arcuate tip such as a coin.

A positive electrode and a negative electrode (not shown) that are electrically connected to the battery 41 are arranged inside the battery holder portion 13b. When the battery cover 40 is screwed onto the female screw 13c and the third opening 11c3 is closed by the battery cover 40, the positive electrode and the negative electrode contact the positive electrode and the negative electrode of the battery 41, respectively. The positive electrode and the negative electrode are electrically connected to a circuit board 3b, which will be described later, through wiring (not shown).

The switching lever 1D is used to switch the flow path of raw water inside the water purifier 100 and switch the discharge mode from inside the water purifier 100 between "purified water mode", "straight mode", and "shower mode". It constitutes a switching means.
The "water purification mode" is a mode in which the raw water W1 that has flowed into the raw water inlet E1 is filtered by the cartridge 2 and then discharged.
The "straight mode" is a mode in which the raw water W1 that has flowed into the raw water inlet E1 is discharged straight in the Z2 direction as unfiltered raw water W2.
"Shower mode" is a mode in which the raw water W1 that has flowed into the raw water inlet E1 is discharged downward in a shower shape as unfiltered raw water W3.

The switching lever 1D is fixed to the rotating shaft portion 14b of the switching rotor 14. An engagement rod 1Da biased in the X1 direction is arranged on the side surface of the switching lever 1D in the X1 direction. A switching detection sensor (not shown) is arranged in the first structure 11 to detect the engagement hole 11g in which the engagement rod 1Da is engaged.

As shown in FIG. 1, the display section 3 is arranged at the upper part of the front section 1X of the main body section 1. The display screen of the display section 3 is visible through a rectangular display window 3A formed in the top sheet 18 disposed above the opening 1f.
As shown in FIG. 3, the display section 3 includes a display panel 3a, a circuit board 3b, and a display section cover 3c.

The display panel 3a has, for example, a "life display mode" and a "measurement display mode" as display modes.
The life display mode is a mode in which the display panel 3a displays the remaining life of the cartridge 2 based on the cumulative flow rate of purified water W4 filtered by the cartridge 2. As the remaining life, for example, a value obtained by subtracting the integrated flow rate of purified water W4, which is the sum of the discharge amount (discharge volume) of purified water W4, from the total volume that can be passed through the cartridge 2 is used.
The measurement display mode is a mode in which the display panel 3a displays information on the amount of purified water W4 discharged from the start to the end of discharge.
The configuration of the display panel 3a is not particularly limited as long as each display mode can be displayed in a switchable manner. For example, a liquid crystal panel, an organic EL panel, an LED panel, etc. may be used as the display panel 3a.

The circuit board 3b is a board on which the display panel 3a is mounted, and is fixed on the support portion 13a of the third structure 13. For example, in addition to the display panel 3a, the circuit board 3b is provided with a switch for switching display modes and a control section (not shown). The switch is, for example, a toggle switch that generates a switching signal each time it is pressed.

The control unit is electrically connected to the flow meter 10, the switching detection sensor, the type detection sensor, the reset switch 1E, the switch 4e, and the battery 41. The control unit receives the output signals from the switching detection sensor, the type detection sensor, the reset switch 1E, and the switch 4e, and the voltage information of the battery 41 obtained from the battery 41, and performs calculation processing according to each. , and control of the display panel 3a.
For example, the control unit calculates the flow rate based on the measurement signal from the flow meter 10 and controls the display on the display panel 3a based on the calculated value of the flow rate.
For example, the control unit resets the cumulative flow rate when a reset signal is sent from the reset switch 1E.

For example, the control unit includes a computer including a CPU, memory, input/output interface, storage unit, and the like. The control and arithmetic processing by the control unit are realized by the CPU executing the control program and the arithmetic processing program stored in the memory.

As shown in FIG. 3, the display section cover 3c is arranged between the top sheet 18 and the display panel 3a. For example, the display section cover 3c is made of a thermoplastic transparent resin material.

As shown in FIG. 1, the operation button 4 is arranged on the Y1 direction side of the display window 3A.
The operation button 4 switches between the life display mode and the measurement display mode by pressing a switch on the circuit board 3b.

Next, the detailed configuration of the purified water discharge section 20 and the first opening 11c1 to which the purified water discharge section 20 is attached will be described.
FIG. 5 is an exploded perspective view of the purified water discharge section in the water purifier according to the first embodiment of the present invention. FIG. 6 is an enlarged view of the vicinity of the purified water discharge section and the raw water discharge section in FIG. 3. FIG. 7 is a schematic perspective view of a purified water discharge section in the water purifier according to the first embodiment of the present invention. FIG. 8 is a view from A in FIG. FIG. 9 is a schematic perspective view showing the attachment part of the purified water discharge part in the water purifier according to the first embodiment of the present invention. FIG. 10 is a schematic partial cross-sectional view showing the arrangement of the purified water discharge section in the water purifier according to the first embodiment of the present invention when it is installed.

As shown in an exploded perspective view in FIG. 5, the purified water discharge section 20 is removably attached to the first opening 11c1 of the lower cover 1B.
A mounting position mark 1h1 (first mark), an insertion position mark 1h2, and a rotation direction mark 1h3, which serve as a mark when the purified water discharge part 20 is mounted, are formed on the outer circumference of the first opening 11c1.
Details of the mounting position mark 1h1, the insertion position mark 1h2, and the rotation direction mark 1h3 will be described later.

As shown in FIG. 6, a strainer 21 and a packing 22 are arranged between the purified water discharge section 20 and the circular tube 11h at the tip of the purified water discharge flow path P6.
The strainer 21 prevents solid components flowing together with the purified water W4 from flowing out. The strainer 21 also has the function of rectifying the flow of purified water W4.
As the strainer 21, for example, a wire mesh or the like is used.
The strainer 21 is arranged at the bottom of the hole 20c at the end of the purified water discharge section 20 in the Z1 direction.

The packing 22 is an annular sealing material when viewed from the Z2 direction. The packing 22 has an outer diameter larger than the inner diameter of the hole 20c, and has an inner diameter smaller than the outer diameter of the tip of the circular tube 11h. The cross-sectional shape of the packing 22 is a substantially isosceles triangular shape whose thickness decreases from the outer periphery toward the inside in the radial direction. Therefore, the thickness of the packing 22 is maximum at the outer peripheral surface 22a (outer peripheral portion) and minimum at the inner peripheral surface 22b (inner peripheral portion). For example, the inner circumferential surface 22b is rounded into a convex arc shape radially inward.
The packing 22 is press-fitted into the hole 20c on the Z1 direction side of the strainer 21 disposed at the bottom of the hole 20c. The packing 22 presses the inner circumferential surface of the hole 20c with its wide outer circumferential surface 22a, and is in close contact with the hole 20c due to the frictional force on the outer circumferential surface 22a.
When the purified water discharge part 20 is attached to the packing 22, the outer circumferential surface of the circular tube 11h fits inside the inner circumferential surface 22b. For this reason, the purified water discharge part 20 and the circular pipe 11h are liquid-tightly connected by the packing 22. The packing 22 contacts the circular tube 11h at the inner circumferential surface 22b. Since the thickness of the inner circumferential surface 22b is thinner than the thickness of the outer circumferential surface 22a, the frictional force generated between the inner circumferential surface 22b and the circular tube 11h is equal to the frictional force generated between the outer circumferential surface 22a and the outer circumferential surface 22a. smaller than
Therefore, when the purified water discharge section 20 is attached or detached, the inner circumferential surface 22b slides on the circular pipe 11h while the outer circumferential surface 22a is in close contact with the hole 20c. At the same time, it is removable from the main body part 1.
According to the present embodiment, since the packing 22 is fixed to the purified water discharge part 20 by frictional force, the number of parts can be reduced compared to, for example, a case where the packing 22 is fixed to the purified water discharge part 20 using a pressing member. This allows the purified water discharge section 20 to be further miniaturized.
In this embodiment, the packing 22 also has the function of a pressing member that presses the strainer 21 against the hole 20c. According to this embodiment, the number of parts and the size can be reduced because the pressing member of the strainer 21 can be omitted.

As shown in FIG. 7, the purified water discharge section 20 has an overall cylindrical shape extending in the Z direction. The purified water discharge portion 20 includes a first cylindrical portion 20a (cylindrical portion), a flange portion 20d, a second cylindrical portion 20e, and an engagement protrusion 20f (second engagement portion).

The first cylindrical portion 20a is a cylindrical portion exposed to the outside of the lower cover 1B, and has a cylindrical inner peripheral surface 20b extending in the Z direction formed inside. The end of the inner circumferential surface 20b in the Z2 direction forms a purified water outlet E13.
As shown in FIG. 8, two planar portions 20i facing each other in the radial direction are formed on the outer peripheral portion of the first cylindrical portion 20a. Each plane part 20i is parallel to each other and parallel to the Z direction. The distance between each flat portion 20i is W. The distance W is larger than the inner diameter of the inner circumferential surface 20b and smaller than the outer diameter of the first cylindrical portion 20a.
Each plane portion 20i can be used as a gripping portion for gripping the purified water discharging portion 20 when the purified water discharging portion 20 is attached or detached.

The flange portion 20d is a flat plate parallel to the XY plane, and protrudes laterally from the outer peripheral surface of the end in the Z1 direction of the first cylindrical portion 20a. The flange portion 20d may be provided around the entire circumference of the first cylindrical portion 20a, but in the example shown in FIG. There is. The protruding direction of each flange portion 20d is a direction perpendicular to the direction in which each flat portion 20i faces. The width of each flange portion 20d in the circumferential direction is W, which is the same as the facing distance of each flat portion 20i. The amount of radial protrusion of each flange portion 20d is D from the outer circumferential surface of the second cylindrical portion 20e, which will be described later.
When the purified water discharge part 20 is attached, the surface of each flange part 20d in the Z1 direction is slidably in contact with the first lower surface 1g.

A second mark 20h is formed on the surface of each flange portion 20d in the Z2 direction to face the mounting position mark 1h1 in the radial direction of the purified water discharge portion 20 when the purified water discharge portion 20 is attached to the first opening 11c1. .
Although the shape of the second mark 20h is not particularly limited, in the example shown in FIG. It is a concave groove.

Here, detailed shapes of the mounting position mark 1h1, the insertion position mark 1h2, and the rotation direction mark 1h3 will be explained.
The mounting position mark 1h1 indicates the arrangement of the purified water discharge section 20 when it is mounted. As shown in FIG. 9, the mounting position marks 1h1 are formed at positions facing each other in the radial direction with the center of the first opening 11c1 in between. Although the shape of the mounting position mark 1h1 is not particularly limited, in the example shown in FIG. 9, each mounting position mark 1h1 is a linear groove extending in the radial direction of the first opening 11c1 on the first lower surface 1g.
In the example shown in FIG. 8, the lateral width of each mounting position mark 1h1 and the lateral width of each second mark 20h are the same. Therefore, when the purified water discharge part 20 is mounted, each mounting position mark 1h1 and each second mark 20h are aligned on the same line when viewed from the Z1 direction.

As shown in FIG. 9, the insertion position mark 1h2 indicates the approximate position when inserting the purified water discharge part 20 into the first opening 11c1. In this embodiment, the insertion position mark 1h2 indicates the approximate position of the second mark 20h when the purified water discharge part 20 is inserted.
The insertion position mark 1h2 is adjacent to one mounting position mark 1h1 in the circumferential direction on the first lower surface 1g, and is arranged at a position facing the center of the hole 23A, which will be described later, in the radial direction with respect to the first opening 11c1. ing. In the example shown in FIG. 9, it is formed only on the side of the mounting position mark 1h1 in the Y1 direction, but it may be formed only on the side of the mounting position mark 1h1 in the Y2 direction. Furthermore, the insertion position mark 1h2 may be formed next to both mounting position marks 1h1.
Although the shape of the insertion position mark 1h2 is not particularly limited, in the example shown in FIG. 9, the insertion position mark 1h2 is a circular projection protruding from the first lower surface 1g in the Z2 direction when viewed from the Z1 direction.

The rotation direction mark 1h3 indicates the rotation direction of the purified water discharge section 20 when the purified water discharge section 20 is attached or detached. Although the shape of the rotation direction mark 1h3 is not particularly limited, in the example shown in FIG. 9, the rotation direction mark 1h3 has a triangle shape with one apex facing the mounting position mark 1h1 and an insertion position mark 1h2 when viewed from the Z1 direction. It is formed between the insertion position mark 1h2 and the insertion position mark 1h2.

Here, we return to the explanation of the purified water discharge section 20. As shown in FIG. 7, the second cylindrical portion 20e has a cylindrical shape extending in the Z1 direction from each flange portion 20d. The second cylindrical portion 20e has a cylindrical shape coaxial with the inner circumferential surface 20b.
A hole 20c having an inner diameter larger than that of the first cylindrical portion 20a is formed inside the second cylindrical portion 20e from the end of the second cylindrical portion 20e in the Z1 direction.
The packing 22 and the tip of the purified water discharge flow path P6 equipped with the packing 22 can be inserted into the hole 20c.

The engagement protrusion 20f is a protrusion that constitutes a second engagement portion that engages with a bayonet mount 23, which will be described later, when attached to the first opening 11c1. The engagement protrusions 20f protrude laterally from the outer peripheral surface of the end of the engagement protrusions 20f in the Z1 direction at two locations overlapping each flange portion 20d when viewed from the Z2 direction. Each engaging protrusion 20f has a size that is hidden behind each flange portion 20d when viewed from the Z1 direction, and has a plate shape parallel to each flange portion 20d. Therefore, the circumferential width w of each engagement protrusion 20f is smaller than the circumferential width W of each flange portion 20d, and the radial protrusion amount d from the second cylindrical portion 20e is smaller than the circumferential width W of each flange portion 20d. is smaller than the radial protrusion amount D.
The distance between the surface of each engagement projection 20f in the Z1 direction and the surface of each flange portion 20d in the Z1 direction (hereinafter referred to as the distance between the flange portion 20d and the engagement projection 20f) is h.
Engagement grooves 20g (recesses) penetrating in the Z direction are formed on the distal end surfaces of each of the engagement protrusions 20f in the protruding direction.

The first opening 11c1 can be engaged in the Z direction by inserting the purified water discharge part 20 in the Z1 direction from the second cylindrical part 20e and rotating the purified water discharge part 20 around the center of the first opening 11c1. It is set in. The engagement structure in the first opening 11c1 is not particularly limited as long as rotational engagement is possible.
In this embodiment, a bayonet system is adopted, which requires a small amount of rotation and is easy to attach and detach.
As shown in FIG. 9, the first opening 11c1 includes a circular hole 24 and a bayonet mount 23. As shown in FIG.

The circular hole 24 has a cylindrical surface shape into which the outer peripheral surface of the second cylindrical portion 20e of the purified water discharge portion 20 is removably fitted. The circular hole 24 penetrates the lower cover 1B at the first lower surface 1g.
The bayonet mounts 23 are provided at two radially opposed locations on the outside of the circular hole 24 in the radial direction. Each bayonet mount 23 has a shape that is symmetrical with respect to the center of the circular hole 24 .

Bayonet mount 23 includes a hole portion 23A and a first engaging portion 23B.
The hole portion 23A is formed radially outward from the inner circumferential surface of the circular hole 24, and is recessed into the inner side of the lower cover 1B from the first lower surface 1g. The hole portion 23A includes a first wall portion 23a forming the inner surface in the radial direction, a second wall portion 23h forming the inner surface in the circumferential direction, and each end of the first wall portion 23a and the second wall portion 23h in the Z1 direction. The bottom surface portion 23b extends in parallel to the XY plane from the inner peripheral surface of the circular hole 24 to the inner circumferential surface of the circular hole 24. The first wall portion 23a has a cylindrical shape coaxial with the circular hole 24.
The position of each hole 23A in the circumferential direction is shifted from the position of each mounting position mark 1h1 in the circumferential direction. It is formed at the end portion of the first wall portion 23a in the circumferential direction, which is farthest from the mounting position mark 1h1.
The amount of deviation in the circumferential direction of each hole 23A is not particularly limited as long as the hole 23A is covered by the flange 20d when viewed from the Z1 direction when the purified water discharge section 20 is attached. For example, as shown in FIG. 8, if the position of each hole 23A is expressed by an axis L2 connecting the centers of each hole 23A in the circumferential direction, then the axis L2 is relative to the axis L1 along which the mounting position mark 1h1 is aligned. , is tilted approximately 30 degrees counterclockwise when viewed from the Z1 direction. The insertion position mark 1h2 is formed on the axis L2.

The radial depth of the hole 23A is large enough to allow the engagement protrusion 20f to be inserted when the second cylindrical portion 20e is inserted into the circular hole 24. That is, the hole 23A forms an opening 23c on the first lower surface 1g into which the engagement protrusion 20f can be inserted in the Z1 direction.
The depth of the hole 23A in the Z direction is greater than the distance h between the flange 20d and the engagement protrusion 20f. For this reason, the engagement protrusion 20f is inserted into the opening 23c and the second cylindrical part 20e is inserted into the circular hole 24 from the Z2 direction, and the flange part 20d is locked with the first lower surface 1g (hereinafter referred to as the purified water discharge part). 20), the engagement protrusion 20f faces the bottom surface portion 23b with a gap therebetween.

The first engaging portion 23B includes a locking plate portion 23d, a third wall portion 23e, a fourth wall portion 23f, and a convex portion 23g.
The locking plate portion 23d is a plate-shaped portion that forms a gap between the locking plate portion 23d and the bottom surface portion 23b into which the engagement projection 20f in the inserted state of the purified water discharge portion 20 can be inserted. The locking plate portion 23d is adjacent to the hole portion 23A in the circumferential direction and protrudes from the position of the first wall portion 23a to the inner peripheral surface of the circular hole 24 in the radial direction. The surface of the locking plate portion 23d in the Z1 direction is slightly closer to the Z2 direction than the surface of the engagement protrusion 20f in the Z2 direction when the purified water discharge portion 20 is inserted.
The third wall portion 23e has an inner peripheral surface where the first wall portion 23a extends in the circumferential direction on the Z1 direction side of the locking plate portion 23d.
The fourth wall portion 23f extends toward the inner peripheral surface of the circular hole 24 from the end opposite to the first wall portion 23a in the circumferential direction of the third wall portion 23e. The fourth wall portion 23f regulates the position of the purified water discharge portion 20 in the circumferential direction when it is attached.
The convex portion 23g protrudes radially inward from the inner circumferential surface of the third wall portion 23e. The convex portion 23g has a shape that engages with the engagement groove 20g in the engagement protrusion 20f in the circumferential direction.
As shown in FIG. 9, the position of the protrusion 23g in the circumferential direction is such that the protrusion 23g engages with the engagement groove 20g of the engagement protrusion 20f when the purified water discharge part 20 is attached. At this time, the end surface of the engaging protrusion 20f in the clockwise direction in the drawing and the fourth wall surface portion 23f face each other with a slight gap in the circumferential direction.

Next, a method for attaching and detaching the purified water discharge section 20 will be explained. The water purifier 100 can be attached and detached even when the water purifier 100 is fixed to the faucet. However, if you remove the water purifier 100 from the faucet and place it so that the purified water discharge part 20 faces upward, then the movement of the purified water discharge part 20, the mounting position mark 1h1, the insertion position mark 1h2, the rotation direction It is easier to work while looking at the mark 1h3 and the second mark 20h.
The following description will be made assuming that the water purifier 100 is removed from the faucet, turned upside down, and then attached/detached. However, in order to maintain consistency with the above description, the description will be made assuming that the X direction, Y direction, and Z direction are directions fixed to the water purifier 100.

To attach the purified water discharge part 20 to the first opening 11c1, the end of the purified water discharge part 20 on which the engagement protrusion 20f is formed is directed in the Z1 direction, so that the engagement protrusion 20f faces the opening 23c. In this posture, the purified water discharge part 20 is inserted into the first opening 11c1 from the Z1 direction. At this time, if the second mark 20h is inserted in a posture facing the insertion position mark 1h2 in the radial direction, the insertion can be made smoothly. When the flange portion 20d comes into contact with the first lower surface 1g, the insertion is completed (see the two-dot chain line in FIG. 8).
At this time, since the first lower surface 1g of the water purifier 100 is arranged upward, each of the second marks 20h is arranged in the circumferential direction from the position of each mounting position mark 1h1, as shown by the two-dot chain line in FIG. far apart.
The operator rotates the purified water discharge part 20 in a direction (clockwise in the figure) in which the second mark 20h approaches the mounting position mark 1h1, as shown by the arrow. In this embodiment, since the rotation direction mark 1h3 is formed, the possibility that the user will make a mistake in the rotation direction is reduced.
At this time, the operator may hold and rotate the flat portion 20i with his or her fingers. However, instead of grasping with fingers, an attachment/detachment jig that can grasp the flat portion 20i and make the rotation radius larger may be used.
An example of the attachment/detachment jig is an attachment/detachment jig 200 shown in FIG. 11 .
FIG. 11 is a schematic front view showing an example of an attachment/detachment jig for the purified water discharge part in the water purifier according to the first embodiment of the present invention.

As shown in FIG. 11, the attachment/detachment jig 200 includes a knob portion 200a, a grip plate 200b, and a projecting piece portion 200c. The attachment/detachment jig 200 is plate-shaped and has a thickness in the depth direction of the plane of FIG. 11 . The attachment/detachment jig 200 has a shape that is line symmetrical with respect to the central axis C of the knob portion 200a and the grip plate 200b.
The knob portion 200a is a plate-shaped portion having an oval outer shape extending in a direction perpendicular to the central axis C. The knob portion 200a is a portion that is held in the hand of an operator and rotated around the central axis C.
The grip plate 200b is a plate-shaped portion that protrudes in the direction along the central axis C from the end of the grip portion 200a in the lateral direction. The grip plates 200b are provided at two locations facing each other with the central axis C interposed therebetween. The interval between each gripping plate 200b is W.
The protruding piece 200c has a plate shape that protrudes from the end opposite to the end in the short direction of the knob 200a where each grip plate 200b is provided. The tip of the projecting piece 200c has a thickness that allows it to be inserted into the inside of the slit 40b of the battery cover 40 and the slit 31e of the raw water discharge part 30, which will be described later.

For example, in order to rotate the purified water discharge part 20 using the attachment/detachment jig 200, each flat part 20i of the purified water discharge part 20 is sandwiched between each grip plate 200b. Thereafter, the operator rotates the attachment/detachment jig 200 around the central axis C while holding the knob 200a. As a result, the purified water discharge section 20 rotates together with the attachment/detachment jig 200.
Since the length of the grip portion 200a in the longitudinal direction is longer than the interval between the flat portions 20i, each flat portion 20i can be rotated with a lower load than when rotated by holding each flat portion 20i by hand. Furthermore, the purified water discharge section 20 can be rotated without touching the outer surface thereof. Therefore, the purified water discharge section 20 can be attached and detached without contaminating the purified water discharge section 20.
For example, the attachment/detachment jig 200 may be provided together with the water purifier 100, or may be provided together with the water purifier 100 when the purified water discharge section 20 is supplied as a replacement part.
Further, for example, the knob portion 200a of the attachment/detachment jig 200 may be provided with an attachment portion that can be attached to the switching lever 1D or the main body portion 1. In this case, when the attachment/detachment jig 200 is not in use, the attachment/detachment jig 200 can be attached to the water purifier 100.

When the purified water discharge part 20 is rotated clockwise in FIG. 8, the engagement protrusion 20f rotates from the hole 23A toward the fourth wall part 23f, as shown in FIG. The engagement protrusion 20f that has moved in the circumferential direction from the hole 23A rotates along the surface of the locking plate 23d on the Z1 direction side. When the convex portion 23g rides on the distal end surface of the engagement protrusion 20f, the rotational torque temporarily increases due to friction. When the rotation is continued further, the convex portion 23g fits into the engagement groove 20g, and the rotational torque decreases. At this time, a clicking sensation is given to the operator. When the convex portion 23g is engaged with the engagement groove 20g, the second mark 20h and the mounting position mark 1h1 face each other on the same line.
The operator can know that the purified water discharge part 20 has been engaged with the bayonet mount 23 by feeling a click and seeing that the second mark 20h and the mounting position mark 1h1 are facing each other on the same line. .
This completes the installation of the purified water discharge section 20.
The purified water discharge part 20 in the installed state is positioned in the circumferential direction by the engagement between the convex part 23g and the engagement groove 20g. The engagement protrusion 20f engages with the locking plate portion 23d in the Z2 direction. Thereby, the purified water discharge part 20 is prevented from coming off in the Z2 direction.

When the purified water discharge part 20 is rotated in the opposite direction to the above-mentioned direction so that the engagement protrusion 20f faces the opening 23c, the operator can pull out the purified water discharge part 20 in the Z2 direction. For example, if the engagement protrusion 20f rotates until it comes into contact with the second wall surface 23h of the hole 23A, the engagement protrusion 20f has moved to a position where it can be reliably pulled out from the opening 23c.
When the purified water discharge part 20 is pulled out, the outer circumferential surface 22a of the packing 22 is held in the hole 20c by frictional force, and the inner circumferential surface 22b of the packing 22 slides on the outer circumferential surface of the circular tube 11h. Thereby, the packing 22 and the strainer 21 held by the packing 22 are removed from the water purifier 100 together with the purified water discharge section 20.
When the purified water discharge part 20 is removed, the purified water discharge part 20, the packing 22, and the strainer 21 can be cleaned or replaced. Furthermore, the circular tube 11h exposed within the first opening 11c1 can be easily cleaned.

Next, the detailed configuration of the raw water discharge section 30 will be explained.
FIG. 12 is a schematic perspective view showing an example of a raw water discharge section in the water purifier according to the first embodiment of the present invention. FIG. 13 is a schematic plan view showing an example of a raw water discharge section in the water purifier according to the first embodiment of the present invention.

As shown in FIG. 12, the straight discharge part 31 of the raw water discharge part 30 has an outer cylindrical part 31A that protrudes from the center of the shower discharge plate 32 in the Z2 direction. The end of the outer cylindrical portion 31A in the Z1 direction is connected to the shower discharge plate 32 at a circular boss portion 31g when viewed from the Z1 direction.
A cylindrical inner peripheral surface 31a forming a straight discharge port E11 passes through the center of the straight discharge portion 31.
As shown in FIG. 13, the outer circumferential surface of the straight discharge portion 31 includes a curved surface portion 31b coaxial with the inner circumferential surface 31a and curved in an arc shape, and a flat portion 31c facing each other in the Y direction. The distance between the flat portions 31c in the Y direction is narrower than the outer diameter of the curved portion 31b.
Slits 31e that penetrate the outer cylinder part 31A in the radial direction of the inner circumferential surface 31a are formed at two locations at the tip of the outer cylinder part 31A. The slits 31e are radially opposed to each other across the center of the inner circumferential surface 31a.
As shown in FIG. 12, the depth of each slit 31e is shallower than the protruding length of the outer cylinder portion 31A. Therefore, in the inner circumferential surface 31a, a straight hole 31d consisting of a cylindrical surface continuous in the circumferential direction is formed on the Z1 direction side from the bottom of each slit 31e.

A plurality of discharge holes 32h are formed in the shower discharge plate 32 between the side wall member 33 and the straight discharge portion 31, penetrating in the thickness direction.
The inner edge of the shower discharge plate 32 is connected to the boss portion 31g of the outer cylinder portion 31A.
A cylindrical side wall member 33 that protrudes from the shower discharge plate 32 in the Z direction is connected to the outer edge of the shower discharge plate 32 . The amount of protrusion of the side wall member 33 from the shower discharge plate 32 is greater in the Z1 direction than in the Z2 direction. A male thread 33c for screwing into the tubular wall portion 11e of the first structure 11 is formed on the outer circumferential portion of the protruding portion of the side wall member 33 in the Z1 direction.
The plurality of discharge holes 32h are provided at positions separated from the inner circumferential surface 33b of the end portion 33a and the outer edge of the boss portion 31g, respectively.
The amount of protrusion of the end portion 33a of the side wall member 33 in the Z2 direction is a height that does not interfere with shower discharge from the plurality of discharge holes 32h. For example, the protrusion height of the end portion 33a may be 0.3 mm to 1.0 mm.
A mark 33d indicating, for example, the direction of rotation of the raw water discharge section 30 when it is attached or detached is engraved on the end portion 33a.

In this embodiment, the straight discharge part 31 and the side wall member 33 are made of resin.
The material of the shower discharge plate 32 is not particularly limited as long as the necessary discharge holes can be formed. In this embodiment, as an example, the shower discharge plate 32 is a metal plate. When the shower discharge plate 32 is a metal plate, it is easy to form discharge holes with a small diameter. Further, when the shower discharge plate 32 is made of a metal plate, it is easy to maintain strength against water pressure even if the shower discharge plate 32 is thin even when a large number of small diameter discharge holes are formed.
For example, if the shower discharge plate 32 is a metal plate, the shower discharge plate 32 can be connected to the straight discharge part 31 and the side wall member 33 at the same time as the straight discharge part 31 and the side wall member 33 are formed by insert molding. Therefore, the manufacturing process of the raw water discharge section 30 can be simplified. For example, since adhesives, connecting members, and the like for connecting the shower discharge plate 32 to the straight discharge portion 31 and the side wall member 33 are not required, miniaturization and cost reduction are possible.

As shown in FIG. 6, the raw water discharge part 30 is installed in the second opening part 11c2 by being screwed into a female thread 11i formed on the inner peripheral surface of the tubular wall part 11e.
Similar to the purified water discharge section 20, a strainer 21 and a packing 22 are arranged in a hole 31f formed at an end in the Z1 direction of the straight discharge section 31 of the raw water discharge section 30. However, if there is a dimensional difference between the hole 20c and the hole 31f, the dimensions of the strainer 21 and the packing 22 disposed in the hole 31f are formed with appropriate dimensions according to the dimensional difference. .
The strainer 21 in the straight discharge part 31 is arranged at the bottom of the hole part 31f, and prevents the solid components flowing together with the raw water W1 supplied from the straight channel P2 from flowing out. The strainer 21 also has the function of rectifying the flow of the raw water W2.
The packing 22 in the straight discharge portion 31 is press-fitted into the hole 31f on the Z1 direction side of the strainer 21 disposed at the bottom of the hole 31f. The tip of the tubular portion 11d is inserted inside the inner circumferential surface 22b of the packing 22.
In the tubular portion 11d, the outer circumferential surface on the Z1 direction side of the contact portion with the packing 22 is slidably fitted into the inner circumferential surface of the end of the straight discharge portion 31 in the Z1 direction.

A dispersion plate 34 is attached to the outer periphery of the straight discharge part 31 on the Z1 direction side with respect to the shower discharge plate 32. The distribution plate 34 is arranged with a gap between the inner peripheral surface of the side wall member 33, the shower discharge plate 32, and the shower flow path P3. The distribution plate 34 faces the shower channel P3 in the Z1 direction.
The distribution plate 34 disperses the raw water W1 supplied from the shower channel P3 to the recess 11f onto the shower discharge plate 32, and equalizes the discharge amount of the raw water W3 in the circumferential direction of the shower discharge plate 32.

A mesh member 35 having an annular outer shape when viewed from the Z2 direction and having a large number of holes is disposed between the dispersion plate 34 and the shower discharge plate 32. The mesh member 35 has a function of suppressing fine disturbances in the discharged water.
Examples of the material for the mesh member 35 include wire mesh.

With such a configuration, the raw water discharge part 30 can be attached to the tubular wall part 11e by screwing the male thread 33c into the female thread 11i, and can be removed from the tubular wall part 11e by unscrewing the thread.
When screwing and unscrewing, for example, the raw water discharge section 30 may be rotated by grasping each flat portion 31c with an appropriate attachment/detachment tool, hand, or the like. In this embodiment, since the slits 31e are formed at two places at the tip of the straight discharge part 31, an appropriate plate, for example, the protruding piece 200c of the attachment/detachment jig 200, can be inserted into the slit 31e and rotated. can.
When removing the raw water discharge part 30 from the tubular wall part 11e, the outer peripheral surface 22a of the packing 22 comes into close contact with the hole part 31f, and the inner peripheral surface 22b slides on the tubular part 11d, as in the case of the purified water discharge part 20. Therefore, the packing 22 and the strainer 21 are removed together with the raw water discharge section 30.

Next, an example of the detailed configuration of the shower discharge plate 32 will be described.
14A and 14B are schematic plan views showing an example of a shower discharge plate in the water purifier according to the first embodiment of the present invention. 14A and 14B, (a) shows the shower discharge plate 32 in a plan view, and (b) shows the shower discharge plate 32 in a side view.

A shower discharge plate 32A shown in FIG. 14A is an example of the shower discharge plate 32 used in the water purifier 100.
As shown in FIG. 14A (a), the shower discharge plate 32A has an annular shape centered on point O in plan view. The center hole 32a penetrating the center of the shower discharge plate 32A has a substantially circular shape with a larger diameter than the inner diameter of the inner circumferential surface 31a. For example, a notch 32f for specifying the position in the mold may be formed on the inner edge of the center hole 32a.
A plurality of through holes 32c are formed in the inner peripheral portion of the shower discharge plate 32A in a region that is inside the boss portion 31g. The plurality of through holes 32c are provided for flowing the resin forming the straight discharge portion 31 during insert molding.
A plurality of through holes 32e are formed in the outer peripheral portion of the shower discharge plate 32A in a region covered by the side wall member 33 (outside the inner peripheral surface 33b). The plurality of through holes 32e are provided for flowing resin forming the side wall member 33 during insert molding.

A plurality of discharge holes 32h are formed between the boss portion 31g indicated by the two-dot chain line and the inner peripheral surface 33b. The plurality of discharge holes 32h are arranged on a plurality of concentric circles centered on point O. In the case of the shower discharge plate 32A, a plurality of holes H1a, a plurality of holes H2a, a plurality of holes H3a, and a plurality of holes H4a are arranged in this order from the outer peripheral side.
When the diameters of the holes H1a, H2a, H3a, and H4a are respectively D1a, D2a, D3a, and D4a, the relationship is D1a<D2a<D3a=D4a. That is, the outermost hole H1a has the minimum hole diameter D1a, and the two concentric holes H3a and H4a on the inner peripheral side have the maximum hole diameter D3a (=D4a). The hole diameter D2a of the hole H2a is intermediate between D1a and D3a.

As shown in FIG. 14A (b), the shower discharge plate 32A has an inner circumferential portion protruding in the thickness direction with respect to an outer circumferential portion. As a result, the annular region surrounded by the two-dot chain line shown in (a) is curved into a conical or spherical shape. The shower discharge plate 32A is arranged in the raw water discharge part 30 so that the protruding direction of the inner peripheral portion thereof is in the Z2 direction.

A shower discharge plate 32B shown in FIG. 14B is an example of the shower discharge plate 32 used in the water purifier 100.
As shown in (a) of FIG. 14B, the shower discharge plate 32B has a plurality of discharge holes 32h arranged in this order from the outer circumferential side: a plurality of holes H1b, a plurality of holes H2b, and a plurality of holes H3b. The rest is the same as the shower discharge plate 32A.
When the hole diameters of the holes H1b, H2b, and H3b are respectively D1b, D2b, and D3b, the relationship is D1b<D2b=D3b. That is, the outermost hole H1b has the minimum hole diameter D1b, and the two concentric holes H2b and H3b on the inner peripheral side have the maximum hole diameter D2b (=D3b).
As shown in FIG. 14B (b), the shower discharge plate 32B is curved similarly to the shower discharge plate 32A.

Next, the operation of the water purifier 100 will be described with a focus on the operation of the raw water discharge section 30.
As described above, when the raw water discharge section 30 is attached, the straight flow path P2 and the straight discharge port E11 are in communication with each other in the conduit formed by the inner circumferential surface 31a of the straight discharge section 31.
Therefore, when the user turns the switching lever 1D to set the discharge mode to "straight mode," the raw water W1 supplied from the faucet passes through the inlet communication port E2 and the straight flow path communication port E3, and then flows through the straight flow path P2. flows to
The raw water W1 flowing through the straight channel P2 has solid components removed by the strainer 21, and then flows into the straight hole 31d. In the straight hole portion 31d, the raw water W1 flows along a cylindrical surface that is not interrupted in the circumferential direction, so that the raw water W1 is rectified along the straight hole portion 31d. Thereafter, the raw water W1 is discharged from the end of the straight discharge part 31 in the Z2 direction as raw water W2. Since the raw water W1 is discharged after being rectified by the straight hole portion 31d, the raw water W1 is prevented from scattering in a direction different from the discharge direction (Z2 direction) due to the influence of the slits 31e.

Moreover, when the raw water discharge part 30 is attached, the shower channel P3 and the annular space between the straight discharge part 31 and the side wall member 33 in the recess 11f are in communication.
Therefore, when the user turns the switching lever 1D to set the discharge mode to "shower mode," the raw water W1 supplied from the faucet passes through the inlet communication port E2 and the shower flow path communication port E4 to the shower flow path P3. flows to
The flow of the raw water W1 flowing through the shower channel P3 is equalized within the annular space by the distribution plate 34.
Furthermore, since a mesh member 35 is arranged between the dispersion plate 34 and the shower discharge plate 32 in the annular space, when the raw water W1 passes through the mesh member 35, the streamlines of the raw water W1 are not disturbed. suppressed. This makes the flow toward the shower discharge plate 32 uniform.
The raw water W1 is discharged from the plurality of discharge holes 32h in the form of a shower as raw water W3. At this time, since the shower discharge plate 32 has a convex curve in the Z2 direction, the discharge direction of the raw water W3 becomes radial, spreading along the curve.
The strength of the flow of the raw water W3 varies depending on the diameter of the discharge hole 32h through which it is discharged. In particular, the discharge hole 32h on the outer peripheral side has the smallest hole diameter, so that the weakest flow is formed. This flow is unlikely to cause water splashing even if it hits tableware, a sink, etc. in the discharge direction, for example.
In the raw water W3, a stronger shower flow discharged from the larger diameter discharge hole 32h is surrounded by a weaker flow at the outermost periphery and is discharged from the inner peripheral side of the shower discharge plate 32. Therefore, the strong shower flow is surrounded by the weak shower flow at the outermost periphery like a curtain, so even if water is splashed, it is blocked by the weak shower flow. This suppresses water splashing due to strong shower flow on the inner peripheral side.

When the user turns the switching lever 1D to set the discharge mode to "purified water mode," the raw water W1 supplied from the faucet flows into the cartridge inflow channel P4 through the inlet communication port E2 and the cartridge channel communication port E5. . The raw water W1 flows into the cartridge 2 through the raw water flow path P7, and the cartridge 2 forms purified water W4. The purified water W4 flows into the purified water flow path P5 from the purified water inlet E7, and flows into the purified water discharge flow path P6.
The purified water W4 flowing through the purified water discharge channel P6 has solid components removed by the strainer 21, and is discharged from the purified water discharge portion 20 in the Z2 direction.

According to the water purifier 100 of this embodiment, the purified water discharge part 20 is detachably attached to the first opening 11c1 of the lower cover 1B, so the purified water discharge part 20 can be installed without disassembling the main body 1. It can be removed and cleaned, or replaced with a new purified water discharge part 20.
Moreover, the purified water discharge part 20 can be attached and detached by grasping and rotating the flat part 20i formed inside the outer diameter of the first cylindrical part 20a. For this reason, there is no need to provide a turning lever or the like that projects laterally, so it is possible to reduce the size.
According to the present embodiment, for example, it is possible to provide the water purifier 100 in which the discharge port such as the purified water discharge part 20 can be easily attached and detached, and the water purifier 100 can be downsized.

(Second embodiment)
Next, a water purifier according to a second embodiment will be described.
FIG. 15 is a schematic perspective view showing an example of a water purifier according to the second embodiment of the present invention.

A water purifier 100A of this embodiment shown in FIG. 15 is an example without a display section, and the display section 3, operation button 4, and reset switch 1E are deleted from the water purifier 100 of the first embodiment. Therefore, the water purifier 100A includes a main body 101 instead of the main body 1 of the first embodiment. The main body portion 101 includes a front portion 101X instead of the front portion 1X.
Since the front part 101X does not include the display part 3, the operation buttons 4, and the third structure 13 that supports these, the length in the X1 direction is shorter than the front part 1X. The front portion 101X includes an upper cover 101A and a lower cover 101B (covers) that are shorter in length in the X1 direction, corresponding to the upper cover 1A and lower cover 1B of the water purifier 100.
In the front portion 101X, the internal structure of the region overlapping with the first lower surface 1g when viewed from the Z1 direction is the same as that of the water purifier 100. Therefore, the lower cover 101B includes a first opening 11c1 and a second opening 11c2 similar to the first embodiment. A purified water discharge section 20 and a raw water discharge section 30 similar to those in the first embodiment are arranged in the first opening 11c1 and the second opening 11c2, respectively.

According to the water purifier 100A of the present embodiment, the purified water discharge section 20 and the raw water discharge section 30 are provided in the main body section 101, similar to the first embodiment. Since it is provided removably like the first embodiment, it has the same effect as the first embodiment.

In each of the embodiments described above, the purified water discharge section 20 is detachably fixed to the lower cover using a bayonet method. However, the method for attaching and detaching the purified water discharge part 20 is not limited to the bayonet method, as long as it can be formed on the lower cover and the purified water discharge part 20 can be attached and detached by rotating. For example, the purified water discharge part 20 may be screw-fitted to the lower cover.

In each of the above embodiments, an example has been described in which the purified water discharge part 20 is removably fixed to the lower cover using a bayonet method. However, the raw water discharge part 30 may be fixed to the lower cover using a similar bayonet method.

In each of the embodiments described above, the mounting position mark 1h1, the insertion position mark 1h2, the rotation direction mark 1h3, and the second mark 20h have been described as examples in which the mounting position mark 1h1, the insertion position mark 1h2, the rotation direction mark 1h3, and the second mark 20h are formed by convex portions or concave portions from the surface of the lower cover 1B. However, these marks may also be formed by, for example, printing.

Although preferred embodiments and modified examples of the present invention have been described above, the present invention is not limited to these embodiments and modified examples. Additions, omissions, substitutions, and other changes to the configuration are possible without departing from the spirit of the invention.
Moreover, the invention is not limited by the foregoing description, but only by the scope of the appended claims.

1, 101 Main body 1B, 101B Lower cover (cover)
1g 1st lower surface (lower surface)
1h1 Installation position mark (first mark)
2 Cartridge (filtration cartridge)
11c1 First opening (opening)
20 Purified water discharge part 20d Flange part 20f Engagement protrusion 20g Engagement groove (recess)
20h Second mark 20i Plane part 22 Packing 22a Outer peripheral surface (outer peripheral part)
22b Inner peripheral surface (inner peripheral part)
23 Bayonet mount 23A Hole section 23B First engaging section 23d Locking plate section 23g Convex section 30 Raw water discharge section 31 Straight discharge section 31A Outer cylinder section 31d Straight hole section 31e Slits 32, 32A, 32B Shower discharge plate 32h Discharge hole 33 Side wall member 40 Battery cover 40b Slits 100, 100A Water purifier 200 Attachment and removal jigs L1, L2 Axis line P5 Purified water flow path P6 Purified water discharge flow path W1, W2, W3 Raw water W4 Purified water

Claims (7)

A water purifier that filters and discharges supplied raw water,
a filtration cartridge that filters the raw water;
a main body portion to which the filtration cartridge is attached;
a cover forming a lower surface of the main body and having an opening opening downward;
a purified water flow path disposed inside the main body, through which purified water that has passed through the filtration cartridge flows toward the opening;
a purified water discharge part that is detachably attached to the opening of the cover and discharges the purified water flowing through the purified water flow path to the outside of the main body;
Equipped with
The downstream end of the water purification channel is a tube with a cylindrical outer circumference,
An annular packing having an inner diameter into which the outer circumference of the pipe can be press-fitted is disposed on the inner circumference of the purified water discharge part,
In the water purifier, in the packing, an outer circumferential portion that contacts the inner circumferential surface of the purified water discharge portion is thicker than an inner circumferential portion that contacts the outer circumferential surface of the pipe. The opening is formed with a hole into which the end of the purified water discharge part is inserted, and a first engaging part that engages the end,
The end of the purified water discharge part is insertable into the hole, and the purified water discharge part rotates along the inner circumferential surface of the opening, so that the purified water discharge part rotates in a first direction intersecting the lower surface. , a second engaging part that is engageable with the first engaging part is formed;
The water purifier according to claim 1. The second engaging part has an engaging protrusion that projects outward from the outer peripheral surface of the purified water discharge part,
The hole portion and the first engagement portion are bayonet mounts that can engage and disengage the engagement protrusion.
The water purifier according to claim 2. A flange portion is provided on the outer peripheral portion of the purified water discharge portion to cover an opening of the hole portion into which the engagement protrusion is inserted from below when engaged with the bayonet mount.
The water purifier according to claim 3. A recess is formed in a part of the circumferential direction on the outer circumferential surface of the tip of the engagement protrusion in the protruding direction,
A convex portion that fits into the recess when the engaging protrusion and the first engaging portion are engaged is formed on the inner circumferential surface of the hole.
The water purifier according to claim 3 or 4. The purified water discharge part has a cylindrical part that protrudes below the lower surface,
Planar parts facing each other in the radial direction are formed on the outer peripheral part of the cylindrical part,
The water purifier according to any one of claims 1 to 5. A first mark is provided on the lower surface of the cover in the vicinity of the opening to indicate the position of the purified water discharge part when installed,
A second mark is provided on the purified water discharge portion at a position radially opposite to the first mark in the installed position.
The water purifier according to any one of claims 1 to 6.

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