JP2015085255A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifier having a raw water discharge cap the attachment/detachment operation of which is facilitated.SOLUTION: The water purifier has: a switcher having a switching valve for switching over one of raw water flow passages to the other; and a cartridge which is connected to the switcher and used for filtering raw water. The switcher includes the raw water discharge cap to be attached or detached. The raw water discharge cap has an attachment/detachment knob which is disposed to be extended to the rear of the switcher.

Description

  The present invention relates to a domestic water purifier that is mainly used at home and filters tap water.

  Many faucet direct-coupled water purifiers are used that are attached to a faucet and switch the flow path with a switching valve. In this type of water purifier, the raw water is discharged directly from the switch, and the purified water is discharged from the switch or from a cartridge attached to the switch. There are many types of discharge of raw water that can be selected between a straight shape and a shower shape, and the discharge port of the raw water straight shape and the raw water shower shape is generally provided on the lower surface of the switch.

  For this reason, when attached to a faucet and used for a long time, there is a problem that washing water, detergent, etc. bounce off the sink, dirt and biofilm clog the holes in the raw water shower, and the flow rate decreases. In addition, there is a problem that foreign matter in the water pipe is clogged in the hole of the raw water shower from the switcher side.

  Thus, Patent Document 1 proposes a water purifier having a water discharge cap for raw water discharge that is detachably attached to the raw water discharge portion of the switching valve in the switch.

  However, the water discharge cap has a knob for attaching and detaching, and has been devised so that it can be attached and detached, but the water discharge cap including the knob is provided in a form hidden behind the switch, and Since the knob is facing forward, the user presses only with the fingertip without looking at the knob, and there is a problem that it cannot be said that the attaching / detaching operation is easy.

JP 2013-154212 A

  In view of the above-described problems, an object of the present invention is to provide a water purifier having a raw water discharge cap that is easier to attach and detach.

In order to solve the above problems, the water purifier of the present invention has the following configuration. That is,
(1) A water purifier having a switching valve that switches a raw water flow path and a cartridge that is connected to the switching device and filters raw water, and the switch includes a water discharge cap that allows the raw water to flow out. And the said water discharging cap is a water purifier which has the knob for attachment / detachment arrange | positioned so that it may protrude over the said switch body body.
(2) It is preferable that the water discharge cap is detachably provided on the switcher with a bayonet structure.
(3) It is preferable that the water discharge cap has a position display portion that shows the position relative to the switch body so as to be visible.
(4) The switch body has a mark, and the arrangement of the water discharge cap and the switch body in which the position display part and the mark are aligned is the mounting start position of the water discharge cap in the switch. This is true.

The present invention can achieve the following excellent effects by the above configuration. That is,
With the configuration of (1) above, turn your hand from the bottom to the back of the switcher, keep your finger on the back of the switcher body, and use your finger to place the detachable knob of the water discharge cap that protrudes behind the switcher body. Therefore, the water discharge cap can be moved relative to the switch body while applying braking slowly, and the attachment / detachment operation can be performed stably and easily.

  In addition, with the configuration (2), the water discharge cap can be attached and detached more easily.

  In addition, with the configuration (3) above, it can be visually confirmed whether the water discharge cap has been reliably attached or detached.

  Moreover, since the mounting start position of the water discharge cap in the switch can be easily recognized by the configuration (4), the water discharge cap can be easily mounted.

The front view of the water purifier which concerns on one Embodiment of this invention The top view of the switch concerning one embodiment of the present invention. The bottom view of the switch concerning one embodiment of the present invention. The right view of the switch concerning one embodiment of the present invention. The upper side perspective view of the switch concerning one embodiment of the present invention. The lower perspective view of the switch concerning one embodiment of the present invention. The lower perspective view of the switching valve concerning one embodiment of the present invention.

  Hereinafter, an example of an embodiment of the present invention will be described by taking a faucet directly connected water purifier as an example with reference to the drawings.

  In addition, this invention is not limited to embodiment shown below, What is necessary is just what can achieve the objective of the said invention, such as embodiment applied to the switch of a stationary water purifier.

  Further, in the embodiment of the present invention, when the switch is attached to the faucet in the normal use state, the surface on the user side of the water purifier (or switch) is separated from the user (front or front). The back side is called the back (or back), and in this state, the faucet side is called the upper surface and the sink side is called the lower surface.

  First, the overall configuration of an embodiment of the present invention will be described.

  In FIG. 1, the front view of the water purifier 1 which is one Embodiment of this invention is shown. The water purifier 1 includes a switching device 2 and a filtration cartridge 3 connected to the switching device 2.

  2 to 6 show diagrams of the switch 2. The switch 2 is fixed to the tip of the faucet by a mounting nut 11, the switch valve 12 shown in FIG. 7, the switch body 13 that houses the switch valve 12 inside, and the switch body 13 that is located below the switch body 13 and flows out raw water. It is an assembly having a water discharge cap 15 to be connected, and a switching lever 14 connected to the switching valve 12 and positioned on the side of the switching body 13.

  The water discharge cap is detachably attached to the switching device, and is connected to the raw water discharging portion 21 of the switching valve 12 included in the switching device 2 in the present embodiment. In addition to this form, there may be a form connected to the switch body.

  The switching valve 12 is a valve that switches the flow path of the raw water supplied from the faucet. The raw water that has entered the switching valve 12 is supplied to the raw water straight, the raw water shower, and the raw water supply to the cartridge 3 according to the rotation angle of the switching lever 14. Discharge in any form.

  The raw water in the form of the raw water straight and raw water shower is formed in the shape of the raw water straight discharge port 35 and the raw water shower discharge port 36 of the water discharge cap 15 and discharged from there.

  Since the water discharge cap 15 is detachable and can be removed and cleaned, the clogging of the many shower holes of the raw water shower discharge port 36 can be removed, and the flow rate can be recovered. In conventional products, the shower holes were washed from the outside of the product, so even though the clogging of the holes could be temporarily eliminated, the cause of the clogging stays upstream from the shower holes, causing a problem of clogging immediately. It was. In the present invention, the frequency of clogging can be greatly reduced by removing the water discharge cap 15 and completely washing away and removing the cause of the clogging that has stayed upstream from the shower hole.

  As described above, in the present embodiment, the water discharge cap 15 is connected to the switching valve 12. In the case of another form attached to the switch body, in order to prevent raw water from leaking between the members, the molding accuracy of at least three members of the switch valve, the switch body, and the water discharge cap is increased, and at least the three members are positioned. It becomes possible to create a watertight state only after mounting with. On the other hand, in this embodiment, the watertight state is created only by the two members of the water discharge cap 15 and the switching valve 12, and there is an advantage that the yield of the molded product is increased and the watertight state can be easily created.

  The switch 2 will be described in more detail with reference to FIGS.

  The switching valve 12 accommodated in the switcher 2 has a raw water inlet 16 at the upper end and a raw water discharger 21 at the lower end. The raw water discharge part 21 of the switching valve 12 has a double cylindrical shape as shown in FIG. 7, and has a bayonet groove 22 for attaching and removing the water discharge cap 15 on the outer wall of the outer cylinder. Two raw water discharge channels are provided: a raw water straight channel 23 formed inside the inner cylinder, and a raw water shower channel 24 formed in an annular portion between the inner cylinder and the outer cylinder. An inner O-ring 25 is attached to the outer periphery of the inner cylinder, and an outer O-ring 26 is attached to the outer periphery of the outer cylinder.

  Next, the water discharge cap 15 will be described.

  As shown in FIG. 3, the water discharge cap 15 has a substantially circular raw water discharge port portion 34, a spatula-shaped knob 31 and a position display portion 33 that are gently connected from there. The raw water discharge port portion 34 is provided with a raw water shower discharge port 36 constituted by a large number of holes arranged in an annular region and a raw water straight discharge port 35 constituted as a central circular hole. Although not shown, a bayonet projection 32 that engages with the bayonet groove 22 of the raw water discharge portion 21 of the switching valve 12 is provided on the side facing the switching valve 12. Moreover, it has two inner and outer cylindrical portions respectively opposed to the inner cylinder and the outer cylinder of the raw water discharger 21. In addition, the shape of the knob for attachment / detachment is not a spatula shape, and may be any shape as long as a finger can be put on and off, for example, a rod shape.

  By pressing the knob 31 of the water discharge cap 15 with a finger in the circumferential direction, the water discharge cap 15 is rotated, and the bayonet protrusions 32 are moved along the bayonet groove 22 of the switching valve 12, thereby forming a double cylindrical shape. The water discharge cap 15 can be engaged and attached to the raw water discharge part 21 of the switching valve 12 which is formed. When removing the water discharge cap 15, the knob 31 is pressed in the opposite direction to the time of attachment, and the water discharge cap 15 is rotated in the reverse direction. In this way, the water discharge cap 15 is detachably provided on the switch 2 (the switching valve 12) with a bayonet structure. (In FIG. 3, the range of rotation when the water discharge cap 15 is attached and detached is schematically indicated by an arrow.) Since the attachment method using the bayonet structure is adopted, the water discharge cap has a larger capacity than other attachment methods (such as screw connection). It can be easily attached and detached.

When the water discharge cap 15 is attached to the raw water discharge portion 21 of the switching valve 12, the inner cylinder and the outer cylinder of the switching valve 12 and the water discharge cap are in a watertight state via the inner O-ring 25 and the outer O-ring 26. The raw water discharge flow path without leakage is formed.
In the present embodiment, the water discharge cap 15 is provided with two types of discharge ports, a raw water straight and a raw water shower. Since raw water is mainly used when washing dishes, and there is a tendency to use either raw water straight that can be washed out vigorously or raw water shower that can wash out a wide area at once, the water purifier is also required to have a plurality of types of discharge forms. Since the water discharge cap 15 is provided with a plurality of types of discharge ports, the water discharge cap 15 can be removed to clean all types of discharge ports, and the switch 2 can be maintained more sanitary. Since the thickness of the bristles of a general toothbrush that is convenient for cleaning the small shower holes of the raw water shower discharge port is about 0.2 mm, the diameter of the shower hole of the raw water shower discharge port is designed to be larger than 0.2 mm. It has the effect of being easy to clean up to the inside of the hole.

  The knob 31 of the water discharge cap 15 will be described.

  As shown in FIGS. 2 and 3, the attachment / detachment knob 31 for the water discharge cap 15 is disposed so as to protrude behind the switch body 13. Since the water discharge cap 15 is rotated for attaching and detaching with a finger on the end of the knob 31 protruding to the back of the switch body 13, the knob 31 protrudes outward from the back surface of the switch body 13. The length is preferably about the same as or larger than the thickness of the finger, and is preferably about 1 cm or more. Even if there is an overhang of the knob 31, it is behind the switch body 2, so there is no hindrance in use, but if it is too long, it may be in the way, so the direction from the back of the switch body 13 of the knob 31 is outward. The overhang length is preferably about 3 cm or less.

  With the knob 31 having such a configuration, the upper part of the knob 31 is turned from the bottom to the back of the switch 2 and supported by the palm of the water discharge cap 15 from below, The finger 31 can press the detachable knob 31 of the water discharge cap 15 protruding behind the switch body 13 in the circumferential direction with the finger, so that the water discharge cap 15 is slowly braked against the switch body 13. Can be moved (turned). For this reason, there is little risk of causing problems such as the finger slipping and detaching due to the momentum that occurs when the knob is simply pressed in the circumferential direction with the finger, and the water discharge cap being removed with great force. And attachment / detachment operation can be performed easily. In particular, since the contour shape of the back surface of the switch body 13 is an arc shape that is concentric with the circular arc that is the trajectory of the rotation of the knob 31, the back surface of the switch body 13 is smoothly aligned with the rotation of the knob 31. It is very easy to put on and take off. In addition, since the knob 31 extends in the radial direction so as to protrude behind the switch body 13, the end of the knob 31 is far from the rotation center of the water discharge cap 15. It is possible to rotate the water discharge cap 15 with a small pressing force.

  As described above, the water discharge cap 15 has the position display portion 33. The arrangement and size of the position display portion 33 are set so that the position of the position display portion 33 relative to the switch body 13 can be visually recognized from the front of the switch 2 to the user. In the present embodiment, when the center of the position display portion 33 is located at the center of the front surface of the switch body 13, the water discharge cap 15 becomes the mounting completion position. In addition, the arrangement in which the center of the position display portion 33 is aligned (coincided) with the position of the mark 17 of the switch body 13 is the removal completion position of the water discharge cap 15, and the mounting of the water discharge cap 15 in the switch 2 It is also the starting position.

  As described above, the position display part 33 of the water discharge cap 15 and the switch body 13 can visually confirm whether or not the water discharge cap 15 can be attached and detached reliably by the configuration of the mark 17. Since the attachment start position of 15 can be easily recognized, the water discharge cap 15 can be easily attached.

  In order to improve these effects, a mark indicating the alignment position may be provided on the position display portion 33, or a mark indicating the mounting completion position may be further provided on the switch body 13.

  If the switch 2 is a resin molded product, it is easy to manufacture and inexpensive. As the resin material, polystyrene, AS resin (acrylonitrile styrene resin), polycarbonate, acrylic resin, polyethylene, ABS resin (acrylonitrile butadiene styrene resin), polypropylene, or the like can be used. In particular, the switching valve 12 for switching the flow path has a sealing mechanism and repeatedly performs switching operation. Therefore, POM (polyoxymethylene, polyacetal) having high molding accuracy and strong friction is preferable. The switch body 13, the switch lever 14, and the water discharge cap 15 are parts that bear the appearance, and since there are many engaging parts with other members, ABS resin that has good molding accuracy and moldability and is glossy is preferable.

  The present invention can be applied not only to the water purifier but also to a faucet having straight water discharge or shower water discharge, but the application range is not limited thereto.

1: Water purifier 2: Switcher 3: Cartridge 11: Mounting nut 12: Switch valve 13: Switcher body 14: Switch lever 15: Water discharge cap 16: Raw water inlet 17: Mark 21: Raw water discharger 22: Bayonet groove 23 : Raw water straight flow path 24: Raw water shower flow path 25: Inner O-ring 26: Outer O-ring 31: Knob 32: Convex for bayonet 33: Position display part 34: Raw water discharge outlet 35: Raw water straight discharge outlet 36: Raw water Shower outlet

Claims (4)

A switch having a switching valve for switching the raw water flow path, and a cartridge connected to the switch for filtering the raw water, the switch is a water purifier provided with a water discharge cap that allows the raw water to flow out. The water purifier has a detachable knob arranged so as to protrude behind the switch body. The water purifier according to claim 1, wherein the water discharge cap is detachably provided on the switcher with a bayonet structure. The water purifier according to claim 1 or 2, wherein the water discharge cap has a position display portion that shows the position relative to the switch body in a visually recognizable manner. The switch body has a mark, and the arrangement of the water discharge cap and the switch body in which the position display part and the mark are aligned is a mounting start position of the water discharge cap in the switch. The water purifier according to claim 3.

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