JP2013154312A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifier constituting a detachable water discharge cap by combining two members easy to assemble with each other.SOLUTION: A water purifier includes a changeover device having a changeover valve for changing over a raw water flow channel, and a cartridge connected to the changeover device to filter raw water, and a water discharge cap for allowing raw water to flow out has a plurality of kinds of discharge ports to be set to a watertight state with respect to the raw water discharge part of the changeover device and attached to the raw water discharge part in a detachable manner.

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 have been proposed that use a switch attached to the faucet and switch the flow path with a switching valve. This type of water purifier has been proposed in which raw water is directly discharged from a switching device, and purified water is directly discharged from a switching device or a cartridge attached to the switching device. Furthermore, there are many types in which the raw water discharge can be selected between a straight shape and a shower shape, and the discharge ports of the raw water straight shape and the raw water shower shape are 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.

  Patent Document 1 describes a structure in which a raw water outlet nozzle (water discharge cap) can be removed and washed. However, the case cover on the outside of the switching valve is divided vertically, and the raw water outlet nozzle is screwed into the lower male thread of each, so that there is no water leakage from the raw water outlet nozzle. There is a problem that the four members of the switching valve and the raw water outlet nozzle need to be accurately molded and assembled, resulting in a low yield of the molded product. Further, it is necessary to assemble the four members in a watertight manner, and there is a problem that it is difficult to assemble after washing.

  Japanese Patent Application Laid-Open No. 2004-228561 describes a plan for dividing the case cover in the horizontal direction. However, there were adjustments in the three parts of the lower body under the case cover, the switching valve, and the raw water shower discharge port (water discharge cap), which did not solve the problem.

Japanese Patent No. 3629322 JP 2008-173538 A

  In view of the above-described problems, the present invention is to provide a water purifier configured by combining a detachable water discharge cap with a combination of two members that can be easily assembled.

In order to solve the above problems, the water purifier of the present invention has the following configuration. That is,
A water purifier having a switching device having a switching valve for switching the raw water flow path, and a cartridge that is connected to the switching device and filters raw water, and a water discharge cap for discharging raw water has a plurality of types of discharge ports, A water purifier that is watertight with the raw water discharge portion of the switching valve and is detachably attached to the raw water discharge portion.

  Here, it is preferable to fix the flow regulating member forming the raw water outflow shape to the switching valve.

  Moreover, it is preferable that the water discharge cap is detachably attached to the raw water discharge portion of the switching valve with a bayonet structure.

  In addition, it is preferable that a knob having a finger hook portion that can rotate the water discharge cap by placing at least one finger and pressing the water discharge cap in the outer peripheral direction is provided on the outer peripheral side of the water discharge cap.

  Moreover, it is preferable when the said knob provided in the said water discharging cap extends to the outer edge of the said switch.

  In addition, the switch has a recess recessed on the lower surface with the switch attached to the faucet, and the range of the recess is at least the installation range of the discharge cap and the movable of the knob provided on the discharge cap. A range is preferable.

  Further, it is preferable that the water discharge cap and the switch have a mark, and the arrangement of the water discharge cap and the switch in which the marks are arranged is a mounting start position of the water discharge cap with respect to the switching valve.

Moreover, when the said water discharge cap is removed in the state which attached the said switch to the faucet, it is preferable if the said water discharge cap leaves | separates downward from a switch.
Moreover, it is preferable that the water discharge cap has a purified water discharge port.

The present invention can achieve the following excellent effects by the above configuration. That is,
A water purifier having a switching device having a switching valve for switching the raw water flow path, and a cartridge that is connected to the switching device and filters raw water, and a water discharge cap for discharging raw water has a plurality of types of discharge ports, Since it is watertight with the raw water discharge part of the switching valve and is detachably attached to the raw water discharge part, it is possible to use the raw water straight and the raw water shower separately, and it is also possible to wash multiple types of discharge ports respectively. The switch can be kept more hygienic.

  Moreover, since the flow regulating member that forms the raw water outflow shape is fixed to the switching valve, the raw water outflow shape is prevented from being disturbed by losing the flow straightening member during washing of the water discharge cap.

  Moreover, since the water discharge cap is detachably attached to the raw water discharge portion of the switching valve with a bayonet structure, the water discharge cap can be easily attached and detached.

  In addition, since a knob having a finger hook portion that can rotate the water discharge cap is provided on the outer peripheral side of the water discharge cap when at least one finger is hung and pressed in the outer peripheral direction of the water discharge cap, the water discharge cap can be easily turned. The water discharge cap can be easily attached and detached.

  Moreover, since the said knob provided in the said water discharging cap extends to the outer edge of the said switch, it is easy to have the knob of a water discharging cap and the operativity of attachment / detachment of a water discharging cap improves.

  In addition, the switch has a recess recessed on the lower surface with the switch attached to the faucet, and the range of the recess is at least the installation range of the discharge cap and the movable of the knob provided on the discharge cap. Since it is within the range, it is possible to minimize the reduction of the switching device and to secure an internal capacity for storing the battery and the switching valve.

  In addition, since the water discharge cap and the switch each have a mark, and the arrangement of the water discharge cap and the switch in which the marks are arranged is the mounting start position of the water discharge cap with respect to the switching valve, the water discharge cap is There is an advantage that it can be easily mounted.

  Also, if the water discharge cap is removed with the switch attached to the faucet, the water discharge cap will move away from the switch downward, so when removing the water discharge cap, gently place the water discharge cap on the operator's hand. Can be dropped.

  Moreover, since the said water discharge cap has a purified water discharge port, it becomes possible to wash | clean not only raw | natural water but the discharge port of purified water, and can maintain a switch more hygienic.

Appearance front view of water purifier of this embodiment Front longitudinal sectional view of the switch of this embodiment Horizontal sectional view of the switch of this embodiment Side longitudinal sectional view of the switch of this embodiment Bottom view of the switch of this embodiment Lower perspective view of the switching valve of the present embodiment Top view of the switching valve case of this embodiment Discharge cap perspective view of this embodiment (A) Top view showing the water discharge cap mounting start position with the protective cover of this embodiment removed (b) Bottom view of FIG. 9 (a) (c) With the protective cover of this embodiment removed The bottom view which shows the water discharge cap mounting completion position. (A) Right side view of switch according to this embodiment (b) Right side view showing a state in which a water discharge cap is attached to FIG. 10 (a) Protective cover perspective view in this embodiment The lower surface side perspective view of the switch equipped with the protective cover in this embodiment Right side view of the switch equipped with the protective cover in the present embodiment

  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 the present invention, a state in which a plurality of members that are in contact with each other is fastened through a seal member or by press-fitting, and a state in which raw water or purified water cannot pass back and forth only by the fastening portion is called watertight, and there is a hole other than the fastening portion in the corresponding member. It may be acceptable. 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.

  In the embodiment of the present invention, the switch 2 is attached to the faucet in such a direction that the cartridge replacement time display means can be read. The left side facing away from the operator is referred to as the left side, and the surface farthest from the operator is referred to as the back side. In addition, the worker side is on the front side.

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

  The external appearance front view of the water purifier 1 which is embodiment of this invention is shown in FIG. The water purifier 1 includes a switching device 2, a filtration cartridge 3 connected to the switching device 2, and a protective cover 4 that detachably covers the lower portion of the switching device 2.

  The switching device 2 is fixed to the tip of the faucet by a mounting nut 11 and, as shown in FIG. 2, the switching valve 12, the upper cover 13 and the lower cover 14 that cover and engage with each other with the switching valve 12 interposed therebetween, and the switching valve 12, a switching lever 15 that is connected to the side of the upper cover 13 and the lower cover 14, and a water discharge cap 17 that is connected to the raw water discharge portion of the switching valve 12.

  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 15. Discharge in any form.

  The raw water that has passed through the switching valve 12 is discharged to the outside from a water discharge cap 17 that is detachably attached to the raw water discharge portion of the switching valve 12. The water discharge cap 17 has a raw water straight discharge port and a raw water shower discharge port, and the shapes of the raw water straight and the raw water shower are formed by the water discharge cap 17.

  Here, the switching device 2 in this embodiment means an assembly that is used by being attached to a faucet, except for the cartridge 3 and the protective cover 4.

  Since the switch 2 is used by being attached to the tip of the faucet, dirt that has bounced off the sink during water flow tends to adhere to the back side. Since the switch 2 of this embodiment has the protective cover 4 which covers at least the lower part of the switch 2, the protective cover 4 is removed and washed, so that the switch 2 can be attached to the faucet while the switch 2 is attached to the faucet. There is an effect that dirt on the back side can be washed. Here, the downward direction means a range that can be expressed in the drawing when expressed in a bottom view.

  In this embodiment, since the water discharge cap 17 can be removed and cleaned, dirt clogged in many shower holes of the raw water shower discharge port can be removed, and the flow rate can be recovered. In the conventional product, the shower holes are washed from the outside of the product, so even though the clogging of the holes can be temporarily eliminated, the cause of the clogging stays upstream from the shower holes, so there is a problem of clogging immediately. It was. In the present embodiment, the occurrence frequency of clogging can be greatly reduced by removing the water discharge cap 17 and completely washing away the cause of the clogging staying upstream from the shower hole.

  In the present embodiment, the water discharge cap 17 is connected to the switching valve 12. In the conventional structure attached to the lower cover 14, in order to prevent raw water from leaking out between the members, the molding accuracy of at least three members of the switching valve 12, the lower cover 14, and the water discharge cap 17 is increased, and at least the three members are positioned. It was necessary to create a watertight state by wearing it above. On the other hand, in this embodiment, the watertight state is made only with two members, the water discharge cap 17 and the switching valve 12, and there exists an advantage which the yield of a molded article increases and can make a watertight state easily.

  In this embodiment, the water discharge cap 17 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 a raw water straight that can be washed out vigorously or a raw water shower that can wash out a wide area at once, the water purifier is also required to have a plurality of discharge forms. Since a plurality of types of discharge ports are provided in the water discharge cap 17, all types of discharge ports can be cleaned, and the switch 2 can be maintained more sanitary.

  The switch 2 will be described with reference to FIGS.

  The upper cover 13 has a liquid crystal display 16 (cartridge replacement time display means) indicating the replacement time of the cartridge 3 at the front center.

  The lower cover 14 has an opening near the center through which raw water can be inserted.

  The switching valve 12 has a raw water inlet 21 at the upper end and a raw water discharger 51 at the lower end. The raw water discharge part 51 of the switching valve 12 has a double cylindrical shape as shown in FIG. 6, and has a bayonet groove 52 for attaching and removing the water discharge cap 17 on the outer wall of the outer cylinder. Two raw water discharge channels are provided: a raw water straight channel 53 formed inside the inner cylinder, and a raw water shower channel 54 formed in an annular portion between the inner cylinder and the outer cylinder. An inner O-ring 55 is attached to the outer periphery of the inner cylinder, and an outer O-ring 56 is attached to the outer periphery of the outer cylinder.

  Next, the water discharge cap 17 will be described.

  As shown in FIG. 8, the water discharge cap 17 has an annular bottom surface 71, an inner side surface 72 and an outer side surface 73 continuous from the bottom surface of the substantially annular ring, and a spatula-like shape continuously connected from the annular bottom surface 71 and the outer side surface 73. A knob 74 is provided. Provided on the outer peripheral side of the water discharge cap 17 is a knob 74 having a finger hook portion that allows at least one finger to be hung on the water discharge cap 17 and to rotate the water discharge cap 17 by pressing in the outer peripheral direction of the water discharge cap 17. Yes. The water discharge cap can be reliably rotated, and the water discharge cap 17 can be attached and detached easily and reliably. The knob 74 may have a shape that continues from the outer side surface 73 or may have a shape that continues from the annular bottom surface 71, and is preferably provided on the outer peripheral side of the water discharge cap 74.

  A convex 75 for bayonet is provided on the inner wall of the outer side surface 73. The water discharge cap 17 is attached to the raw water discharge portion 51 of the switching valve 12 having a double cylindrical shape by moving the bayonet protrusion 75 along the bayonet groove 52 of the switching valve 12. At that time, the outer side surface 73 is watertightly connected to the outer cylinder via the outer O-ring 56 of the switching valve 12 to form the raw water shower channel 54. A large number of holes are annularly formed on the annular bottom surface 71 of the water discharge cap 17, and serve as a raw water shower discharge port for discharging raw water in a shower shape.

  The inner side of the water discharge cap 17 from the inner side surface 72 is connected to the inner cylinder in a watertight manner via the inner O-ring 55 of the switching valve 12 to form a raw water straight flow path 53, and raw water for discharging the raw water in a straight shape. Straight outlet.

  The knob 74 has a fixing groove 77 for fixing the leaf spring 76 and the protective cover 4. The protective cover 4 can be fixed to the switch 2 by fitting the fixing protrusion 82 provided on the surface of the protective cover 4 that contacts the switch 2 into the fixing groove 77 of the water discharge cap 17. The fixing method of the protective cover 4 is not particularly specified as long as it is not only convex and concave, but can be fixed by hooking the convex and convex.

  The leaf spring 76 may not be provided. However, by using the leaf spring 76 in front of the fixing groove 77, even when the protective cover 4 is repeatedly attached and detached, the fixing protrusion 82 is less likely to be scraped than the shape without the leaf spring 76, thereby protecting the plate. There is an effect that the force for fixing the cover 4 to the switch 2 can be maintained for a long time.

  The fixing groove 77 for fixing the protective cover 4 to the switching device 2 may be provided in the switching device 2, and is not necessarily provided in the water discharge cap 17. In this embodiment, since the water discharge cap 17 is provided with holes for forming the shape of the raw water straight and the raw water shower, the raw water shape is adjusted by attaching the water discharge cap 17 and using it. Since the fixing cap 77 for fixing the protective cover 4 to the switching device 2 is provided in the water discharge cap 17, the protective cover 4 cannot be attached when the water discharge cap 17 is not attached, and forgetting to attach the water discharge cap 17 is prevented. Can do.

  Since the thickness of the bristles of a general toothbrush is about 0.2 mm, if the diameter of the shower hole of the raw water shower discharge port is designed to be larger than 0.2 mm, there is an effect that it is easy to clean up the hole.

  Further, the knob 74 may have a shape extending to the outer edge of the switch 2. Since the tip of the knob 74 is far from the center of rotation of the water discharge cap, the water discharge cap can be rotated with a small force by the lever principle. In particular, if the knob 74 has a shape that extends to the outer edge on the near side, the shape becomes easier to operate. Further, when the knob 74 is lengthened, when the protective cover 4 is removed and the water discharge cap 17 is rotated, the knob 74 protrudes outside the outer edge of the switch 2 as shown in FIG. 9 depending on the rotation angle of the water discharge cap 17. be able to. If this protruding position is the mounting start position of the water discharge cap 17, the knob 74 can be seen when the switch 2 is viewed from above, so that there is an advantage that the water discharge cap 17 can be easily attached. Furthermore, if the knob 74 and the switch 2 are marked, and the arrangement of the water discharge cap 17 and the switch 2 in which the respective marks are arranged is the mounting start position of the water discharge cap 17 with respect to the switching valve 12, the water discharge cap 17 is mounted. There is also an effect that the starting position can be easily found.

  It is preferable that the water discharge cap 17 has a thickness of 5 mm or more because the water discharge cap 17 can be easily gripped and fingered and the water discharge cap 17 can be easily attached and detached. In particular, when the water discharge cap 17 is attached with a screw instead of a bayonet, it is easy to operate because it is easy to apply a finger. Moreover, since the area which hits a finger | toe becomes large, a finger contact is gentle and the pain at the time of operation can be removed.

  In the structure in which the water discharge cap 17 is attached and detached using the bayonet mechanism, it is assumed that the water discharge cap 17 is removed by applying a force to only the knob 74 of the water discharge cap 17 and applying a force. Since the bayonet groove is opened obliquely, the bayonet groove can be removed obliquely downward simply by rotating the water discharge cap 17. In this embodiment, on the side surface of the groove that guides the removal of the bayonet groove, about 1 mm before opening is made parallel to the rotation axis. Instead of removing the water discharge cap 17 obliquely downward while rotating, the water discharge cap 17 can be gently dropped onto the user's hand by guiding it substantially vertically downward.

  In the present embodiment, the water discharge cap 17 is provided with a knob 74 on which at least one finger can be put, and the water discharge cap 17 is rotated and detached by pressing the knob 74. A shape in which two or more planes and recesses are provided and the water discharge cap 17 is rotated and attached by grasping the planes and recesses may be used. By creating a flat surface and a concave, it is easy to grasp and exert an effect.

  The shape which forms the outer peripheral surface of the water discharge cap 17 only by a plane may be sufficient. For example, if the cross section of the outer periphery of the water discharge cap 17 is a regular hexagon, even if the water discharge cap 17 is firmly tightened, it can be removed with a spanner or a hexagon wrench.

  In the present embodiment, the spatula-shaped knob 74 is provided, but it may be any shape that can be put on a finger, and may be a rod shape or a convex having a hollow in a horizontal section so that the finger can be easily put on.

  Moreover, the method of attaching and detaching the water discharge cap 17 by providing a straight line with a concave in the center of the water discharge cap 17 and pushing a coin against the recess is easy and preferable.

  In the present embodiment, a bayonet is adopted as a method of attaching the water discharge cap 17 to the switching valve 12, but it may be attached using a screw. A claw is provided on the water discharge cap 17, a protrusion is provided on the inner periphery of the raw water discharge portion 51 of the switching valve 12, and the claw of the water discharge cap 17 is inserted into the raw water discharge portion 51 while bending the claw of the water discharge cap 17. The mechanism which attaches the water discharge cap 17 by hooking on the convex of may be sufficient. Conversely, a mechanism may be provided in which a convex is provided on the outer periphery of the raw water discharge unit 51 and the water discharge cap 17 is attached while the claw of the water discharge cap 17 is bent outward. Similarly, a claw may be provided in the raw water discharge part, and a protrusion for hooking the claw may be provided in the water discharge cap 17.

  On the lower surface of the lower cover 14, a recess that is recessed upward with the switch 2 attached to the faucet is provided as shown in FIG. 10, and the range of the recess is at least the installation range of the water discharge cap 17, and FIG. The movable range of the knob 74 provided on the water discharge cap 17 was set as shown in c). The water discharge cap 17 can be accommodated within the thickness range of the switch 2, and the thickness of the switch 2 can be reduced. Even a sink with a narrow distance between the sink and the faucet can be used widely under the faucet. Moreover, when a back side (lower surface) dent is provided with a width of 10 mm or more in the radial direction from a central hole through which raw water can be inserted, a space for a finger to enter when the water discharge cap 17 is attached or detached can be provided. Even when the knob 74 is not provided, the water discharge cap 17 can be firmly grasped, so that the operation is easy.

  In the case of a structure in which the water discharge cap 17 is attached / detached using a screw mechanism, the water discharge cap 17 is often rotated one or more times when the water discharge cap 17 is attached / detached, so that the back side depression is entirely around the central hole through which raw water can be inserted. There is an effect that it is easy to attach and detach if it is in the circumference.

  In the case of a structure in which the water discharge cap 17 is attached and detached using a bayonet mechanism, a back side depression may be provided only in the movable range of the water discharge cap 17 and the knob 74. In this case, not only can the water discharge cap 17 be accommodated within the thickness range of the switch 2, but also the flow rate counting function and the cartridge replacement time display function are activated in a portion with a large internal capacity that does not have a back side depression. Therefore, there is an advantage that a battery box or the like in which a battery is fitted can be stored.

  In addition, if the back side depression is widened so that a gap can be further inserted on both sides of the movable range of the water discharge cap 17, the finger is sandwiched between the water discharge cap 17 and the switch 2 when the water discharge cap 17 is attached or detached. There is an advantage that can be prevented.

  The inner O-ring and the outer O-ring that are attached to the raw water discharge portion 51 of the switching valve 12 are important because they serve to make the switching valve 12 and the water discharge cap 17 watertight. When the depth and width of the O-ring mounting groove are determined so that it is difficult to remove the inner O-ring 55 and the outer O-ring 56 that appear when the water discharge cap 17 is removed, it is possible to prevent the O-ring from dropping or being lost. .

  In this embodiment, the raw water discharge part 51 and the water discharge cap 17 of the switching valve 12 are made watertight by crushing the outer periphery of the O-ring in the radial direction, but a flat packing is fitted between the raw water discharge part 51 and the water discharge cap 17. The watertight state may be obtained by crushing the packing in the thickness direction.

  A rectifying member disposed upstream of the water discharge cap 17 is also necessary for that purpose. The rectifying member here refers to a mesh that plays a role of adjusting the shape of the raw water straight, a rectifying plate that plays a role of adjusting the shape of the raw water shower, and the like. Although the rectifying member appears when the water discharge cap 17 is removed, it cannot be removed because it is fixed to the switching valve 12 by mounting, integral molding, or welding inside the switching valve 12, thus preventing loss. it can.

  The mesh used as the rectifying member for adjusting the raw water straight shape is preferably installed upstream in the raw water straight channel 53 (for example, immediately after the raw water straight outlet of the downstream chamber 30). If installed near the upstream, even if dirt bounced off the sink enters the raw water straight discharge port, the dirt is difficult to adhere to the mesh, and the switch 2 can be maintained in a sanitary manner simply by washing the water discharge cap 17. it can.

  The rectifying plate arranges the raw water shower shape by evenly spreading the raw water that has flowed out to the raw water shower channel 54 of the switch 2 to the annular bottom surface 71 of the water discharge cap 17. If the current plate is disk-shaped, raw water can be diffused in the circumferential direction of the disk, so that it can be evenly distributed to the annular bottom surface 71 of the water discharge cap 17. The rectifying plate may have a shape in which a plurality of holes are provided in an annular shape. Even when used in a state in which the water discharge cap 17 is forgotten to be attached, the current plate itself has a shower shape, so that it is possible to prevent water from being inadvertently applied to surrounding household goods due to raw water diffusion.

  In the present embodiment, the mode in which the switching valve 12 is sandwiched between the upper cover 13 and the lower cover 14 is referred to as the switching device 2, but when the surface of the switching valve 12 also serves as the surface layer of the switching device 2, The lower cover 14 is not always necessary. Therefore, when the switching valve 12 forms the lower surface layer of the switching device 2, the lower cover 14 is unnecessary, and the depression provided on the lower surface of the lower cover in this embodiment is preferably provided on the lower surface of the switching valve 12. .

  Further, in the present embodiment, a mode in which a hole that allows raw water to be inserted is provided in a circular shape in the center of the lower cover 14 and the water discharge cap 17 is attached is described. The cover 14 may be provided with an outlet corresponding to the raw water straight outlet or the raw water shower outlet, and may be in any form such as a slit or a mesh.

  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 upper cover 13, the lower cover 14, the switching lever 15, and the water discharge cap 17 are parts responsible for the appearance, and since there are many engaging portions with other members, a glossy ABS resin with good molding accuracy and moldability is preferable. .

  Next, the protective cover 4 will be described.

  The protective cover 4 is a thin member along the side surface from the lower surface of the switch 2 as shown in FIGS. 11, 12, and 13, and is detachably mounted on the switch 2. Thinness refers to a resin thickness of 2 mm or less. The aesthetic appearance can be maintained by being integrated with the switch 2.

  When the surface layer of the switching device 2 is composed of a plurality of members, covering the boundary between at least two adjacent members of the plurality of members with the protective cover 4 prevents the boundary from becoming dirty and facilitates maintenance. be able to. That is, since the side surface of the switch 2 is covered, the boundary between the upper cover 13 and the lower cover 14 can be covered, and the boundary between the upper cover 13 and the lower cover 14 that is easily collected by the switch 2 and difficult to clean. There is an effect to prevent accumulation of dirt. Similarly, when the lower cover 14 is composed of a plurality of members, covering the boundaries of the plurality of members that bear the lower cover 14 with the protective cover 4 has an effect of preventing the boundaries from becoming dirty.

  Similarly, as in the present embodiment, when the boundary between a plurality of adjacent members such as the boundary between the upper cover 13 and the liquid crystal display 16 is covered with the protective cover 4, it is possible to reduce the number of places where foreign matter and dirt tend to accumulate, Can be used hygienically.

  If the protective cover 4 has a shape that does not cover one of the front, back, and left and right side surfaces of the switch 2, the protective cover 4 can be easily attached and detached by simply moving the protective cover 4 in the horizontal direction. If the shape of the switch 2 is not covered, the protective cover 4 can be removed by pulling in the direction of the front of the switch, and the design of the protective cover 4 can be made symmetrical. Can be made.

  Since the finger hooking projection 83 is provided on the lower surface of the protective cover 4, there is an effect that the protective cover 4 can be easily put on the finger and easily pulled forward. The finger hooking protrusion 83 may be formed as a depression as long as the finger is easily put on the protective cover 4.

  If the protective cover 4 is a resin molded product, it is easy to manufacture and inexpensive, and has the advantage that there are few scratches when it is repeatedly attached to and detached from the switch 2. 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. Since the protective cover 4 is thin, it is preferable that it is hard to break if it is a polypropylene having a high flexibility. In addition, when ABS resin is used, there is an advantage that it is easy to decorate, such as painting, plating, and printing.

  The shape of the protective cover 4 of the present embodiment is such that only the hole 81 is provided at the center of the protective cover 4 and the raw water shape is formed by the raw water straight discharge port or the raw water shower discharge port provided in the switch 2. There may be a straight outlet and a raw water shower outlet. In this case, the protective cover 4 also functions as the water discharge cap 17. It has a substantially annular bottom surface, an inner side surface and an outer side surface continuous from the bottom surface, and is watertightly connected to the raw water discharge portion 51 of the switching valve 12. Since the water discharge cap 17 is unnecessary, it can be configured at low cost. Further, since there are fewer cleaning parts, there is an advantage that the user can easily care for it, which is preferable.

  In the present embodiment, the protective cover 4 is slid and attached to the switch 2 and fixed to the fixing groove 77 at the back of the leaf spring 76 of the water discharge cap 17. The switch 51 may be mounted from below using screws or bayonet around the portion 51, or may be fixed to the switch 2 using commercially available screws or bolts. Moreover, you may fix the protective cover 4 which attached the band using elastic materials, such as rubber | gum, to the switch 2 using a band. A claw may be provided on one of the protective cover 4 and the switch 2, a convex may be provided on the other, the claw may be bent, the protective cover 4 and the switch 2 may be attached, and the claw may be hooked and fixed.

  The protective cover 4 can be easily attached / detached in the front direction. However, it is preferable that the protective cover 4 be attached in a substantially vertical direction because a sink with a small depth can be easily attached / detached. In general, the raw water discharge unit 51 is provided in a cylindrical shape extending vertically downward on the lower side of the switch 2. In this case, since the axial direction of the raw water spouting portion 51 and the attaching / detaching direction of the protective cover 4 are substantially parallel, the gap between the hole 81 through which the raw water provided at the center of the protective cover 4 can be inserted and the raw water spouting portion 51 is reduced. Can do. The range that can be protected by the protective cover 4 can be made wider than when the protective cover 4 is pulled forward and removed.

  It is preferable to make the space between the protective cover 4 and the switch 2 in a watertight state because mold and dirt caused by water and dirt accumulated between the protective cover 4 and the switch 2 can be prevented. If a water drain hole is provided in the protective cover 4, water can be drained even if water enters between the protective cover 4 and the switch 2.

  According to the present embodiment, the protective cover 4 is made of a single member at a low cost, and a shape that can be attached and detached simply by moving in one direction is adopted. On the other hand, if the protective cover 4 has an opening / closing function such as connecting two or more members with a hinge, the surface of the switch 2 that cannot be covered by the protective cover 4 moved in one direction, for example, the entire surface can be covered. There is an advantage that the protected area can be freely selected.

  When the switching device 2 is substantially cylindrical, the protective cover 4 is also formed in a substantially cylindrical shape having a female screw on the inner side, and when attached to the male screw provided on the outer periphery of the switching device 2, the protective cover 4 is attached compactly and strongly. Can do.

  When the switch 2 has a long shape on the back side from the faucet mounting position, such as storing the cartridge 3 in the switch 2, the protective cover 4 may be fitted into the back side of the switch 2. In this case, there is an advantage that it is possible to clean the back surface and the back side lower surface that are difficult to reach by simply removing the protective cover 4.

  The protective cover 4 may be structured to be attached to the cartridge 3. For example, when the cartridge 3 is located on the side of the switch 2 as shown in FIG. 1, a plurality of protrusions are provided on the side surface of the cartridge 3, the protective cover 4 is fixed on the protrusion, and the lower part of the switch 2 is covered. good. Similarly, a brim or claw may be provided instead of the convex.

  When the cartridge 3 is housed inside the switch 2, a clean water discharge port is often provided in the switch 2. By providing not only the discharge port of raw water but also the discharge port of purified water, the entire lower surface of the switch 2 can be covered and protected by the protective cover 4.

  When it is intended to cover the lower part of the switch 2 with a protective cover as in this embodiment, the lower cover 14 can be attached to and detached from the switching valve 12, and the function of the protective cover 4 can be given to the lower cover 14. good. It is good also as a structure which comprises the lower cover 14 with a some member and can attach or detach the member containing the periphery of the raw | natural water discharge part 51 which wants to maintain most hygienically. The discharge port forming the raw water shape may be provided in the switching valve 12 or a water discharge cap 17 may be provided. Moreover, the lower cover 14 has the functions of a protective cover and a water discharge cap by providing the discharge port forming the raw water shape in one member of the lower cover having a protective cover function and the lower cover including the periphery of the raw water discharge part 51. May be allowed. In either case, the number of constituent members can be reduced, and the water purifier can be made inexpensive and compact.

  The protective cover 4 may be formed of a highly stretchable resin such as silicone, and the protective cover 4 may be extended and hooked onto the outer periphery of the lower cover 14 to be fixed. If a fixed molding member such as a cylinder that can be fixed to the raw water discharge portion 51 of the switching valve 12 is provided and the outer side of the fixed molding member is formed of silicone resin, positioning and attachment of the protective cover 4 can be facilitated. In addition, it is possible to eliminate the concern that the silicone resin protective cover 4 is stretched poorly and disturbs the raw water shape. Furthermore, if the outside of the water discharge cap 17 is formed of silicone resin, the protective cover 4 and the water discharge cap 17 can be made as one member. There is an advantage that can be washed at once.

  The present embodiment aims to protect the back side of the switcher 2 from dirt bounced off from the sink and to easily clean the portion corresponding to the back side of the switcher 2, but the protective cover 4 is provided between the faucet and the switcher 2. The form which covers a connection part may be sufficient.

  There are many gaps and irregularities between members in the connection portion of the faucet and the switch 2 to which the faucet, the mounting nut 11 and the switch 2 correspond. Dust and food stains are likely to accumulate in the gaps and dents, and the conventional product has a problem that it must be frequently cleaned. If the protective cover 4 covers the connection portion between the faucet and the switch 2, the switch 2 can be easily maintained hygienically and beautifully by removing and cleaning only the protective cover 4. For example, if the protective cover 4 is made of a thin molded product and is wound around a cone having a tip dropped, it is easy to use because it can be easily detached and opened and cleaned. Moreover, if it is set as the ring-shaped cover which divided the hollow donut type | mold into half, it can be set as the protective cover 4 with low height. The switch 2 can be easily maintained in a hygienic and beautiful manner as long as it can prevent dirt that is difficult to remove by washing, such as dust and food, as described above. Providing a sealing property is preferable because generation of scale can be suppressed.

  Similarly, in the conventional product, there is a problem that the boundary between the upper cover 13 and the liquid crystal display 16 is liable to collect foreign matter and dirt, and is difficult to clean. In this embodiment, the protective cover 4 is attached below the switch 2 for the purpose of protecting the back side of the switch 2. However, the protective cover 4 is mounted on the upper surface of the switch 2 by slide fitting to protect the top surface of the switch 2. It is also good.

  Further, by covering the periphery of the liquid crystal display with a film larger than the liquid crystal display as the protective cover 4, it is possible to realize a product that prevents foreign matter and dirt accumulation and is easy to clean. It is possible to apply multiple layers of film and peel off the top film if it gets dirty, making it beautiful. However, a film made of a material that easily sticks to the upper cover 13 or a film with an adhesive that can be applied and removed is used. If it becomes dirty, it can be washed and pasted again, and it can be used repeatedly.

  The protective cover 4 only needs to achieve the purpose of preventing the change of the switch 2 and simplifying the cleaning. For example, the protective cover 4 is not limited to a molded product, and is a form in which a film is pasted or a silicone rubber is stretched and wound. Also good.

  In addition, if the protective cover 4 is made of a material that easily repels liquid or is provided with a water-repellent coating, the protective cover 4 itself can have an antifouling effect and an easy-to-clean effect. In addition, when an antibacterial coating is applied or a resin containing an antibacterial agent is used, even when scratches are caused by repeated washing, the protective cover 4 itself can be used in a sanitary manner because bacteria are hardly generated. Furthermore, the beauty of the water purifier itself can be added by giving the protective cover 4 coloring and design.

  In the present embodiment, the liquid crystal display is described as the cartridge replacement life display means, but other mechanisms such as a calendar display may be used.

  In the present embodiment, the water discharge cap 17 is a member that is detachably attached to the switching valve 12 and the raw water straight or the shape of the raw water shower is formed by the water discharge cap 17, but the water discharge cap 17 is not provided, Even if the shape of the raw water shower is formed by the lower cover 14, the effect of the protective cover 4 can be obtained.

  According to the present embodiment, the water discharge cap 17 is provided with the discharge port of the raw water, but it can also be applied to the purified water discharge port, and it is also preferable that the discharge port for both the raw water and the purified water is provided. The raw water discharge port and the purified water discharge port may be provided as separate members, but if one member is used, it is inexpensive and the user can clean both the raw water discharge port and the purified water discharge port at the same time. Convenience is high.

  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: Switching device 3: Cartridge 4: Protection cover 11: Mounting nut 12: Switching valve 13: Upper cover 14: Lower cover 15: Switching lever 16: Liquid crystal display 17: Water discharge cap 21: Raw water inlet 22: Raw water inlet 23: Switching valve case 24: Valve body 25: Valve body spring 26: Camshaft 27: Case lid 28: Raw water inlet 29: Upstream chamber 30: Downstream chamber 31: Communication port 32: Partition wall 33: Cam 34: Click stop mechanism 51: Raw water discharge part 52: Bayonet groove 53: Raw water straight flow path 54: Raw water shower flow path 55: Inner O-ring 56: Outer O-ring 71: Toroidal bottom surface 72: Inner side surface 73: Outer side surface 74 : Knob 75: Convex for bayonet 76: Leaf spring 77: Fixed groove 81: Hole 82: Fixed convex 83: Finger hook convex

Claims (9)

A water purifier having a switching device having a switching valve for switching the raw water flow path, and a cartridge that is connected to the switching device and filters raw water, and a water discharge cap for discharging raw water has a plurality of types of discharge ports, A water purifier, which is in a watertight state with the raw water discharge portion of the switching valve, and is detachably attached to the raw water discharge portion. The water purifier according to claim 1, wherein a rectifying member forming a raw water outflow shape is fixed to the switching valve. The water purifier according to claim 1 or 2, wherein the water discharge cap is detachably attached to the raw water discharge portion of the switching valve with a bayonet structure. The knob having a finger hook portion that can rotate the water discharge cap by pressing at least one finger and pressing the water discharge cap in an outer peripheral direction is provided on the outer peripheral side of the water discharge cap. The water purifier in any one of 3. The water purifier according to claim 4, wherein the knob provided on the water discharge cap extends to an outer edge of the switch. The switch has a recess that is recessed upward with the switch attached to the faucet, and the range of the recess is at least the installation range of the discharge cap and the movable range of the knob provided on the discharge cap. It exists, The water purifier in any one of Claims 1-5 characterized by the above-mentioned. The water discharge cap and the switch have marks, respectively, and the arrangement of the water discharge cap and the switch in which the marks are arranged is a mounting start position of the water discharge cap with respect to the switching valve. The water purifier in any one of 3-6. The water purifier according to any one of claims 3 to 7, wherein when the water discharge cap is removed while the switch is attached to a faucet, the water discharge cap is separated downward from the switch. The water purifier according to any one of claims 1 to 8, wherein the water discharge cap has a purified water discharge port.

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