JP2002224666A - Water purifier to be directly connected to faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifier to be directly connected to a faucet, in which it is unnecessary to rotate a cartridge when the cartridge is connected to a main body part, the cartridge can be fit to the main body part easily since there is no sticking component such as an O-ring and the cartridge can be attached or detached easily. SOLUTION: This water purifier to be directly connected to the faucet is constituted of a main body constituted of upper and lower covers and the cartridge 6 in which a filter medium is housed. The cartridge 6 has two claws 22 arranged at the positions orthogonal with respect to the direction to insert a shaft sealing part and symmetric with respect to the central axis of the shaft sealing part and two arc ribs arranged at the positions concentric with respect to the central axis of the shaft sealing part and orthogonal with respect to the claws 22. The main body has two grooved holes fit to the shape of the claws 22 and two arc ribs arranged at the positions concentric with respect to the central axis of the shaft sealing part and orthogonal with respect to the grooved holes. Since the cartridge 6 can be connected to the main body in the interrelations among the claws, the grooved holes and arc ribs, the cartridge can be fit to the main body easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cartridge in which a filter medium for filtering impurities in tap water is incorporated, and a water passage for switching between purified water for discharging filtered water or raw water for discharging tap water as it is. The present invention relates to a faucet direct connection type water purifier comprising a changeover switch that can be used.

[0002]

2. Description of the Related Art In recent years, with the deterioration of tap water quality, consumers have become more and more interested in drinking water, and faucet-direct-type water purifiers for purifying tap water have become widespread. In addition, it is desired to reduce the size and weight of the change-over switches of the direct-type water purifier, the stationary water purifier and the water conditioner that are directly connected to the faucet so as not to disturb the kitchen work. Hereinafter, a faucet direct-connection type water purifier described as a conventional technique has a configuration in which a changeover switch for switching a water passage according to an application and a cartridge containing a filter medium for filtering tap water are connected, and the changeover switch By switching the lever, the tap water can be guided to the cartridge and filtered and discharged as purified water, or the tap water can be selected as a raw water straight which is discharged straight as it is or a raw water shower which is discharged like a shower. It is.

[0003] A conventional faucet direct connection type water purifier will be described. FIG. 10 is an external view of a conventional faucet direct connection type water purifier, FIG.
FIG. 2 is a top view and a cross-sectional view of a water supply port of a conventional water tap directly connected to a faucet. In FIG. 9, 1 is a faucet, 2 is a joint for connecting the faucet 1 and the water purifier, and 3 is a nut for fixing the water purifier and the joint 2. 4 is an upper cover of the water purifier, 5 is a lower cover of the water purifier, and 6 is a cartridge having a built-in filter medium for filtering tap water and detachable from the main body. A raw water straight discharge port 7 for discharging tap water as it is and a raw water shower discharge port 8 are provided, and a purified water discharge port 9 for filtering and discharging tap water with a cartridge 6 is provided. Reference numeral 10 denotes a switching lever which is connected in conjunction with a changeover switch for switching a water passage, and switches from a raw water straight, a raw water shower, and purified water from the outside according to the application. Here, the flow of water will be briefly described. When the switching lever 10 is at the position where the raw water straight is discharged, the flow flows from A to F. When the switching lever 10 is at the position where the raw water shower is discharged, the flow flows from A to G, When it is at the position where the clean water is spouted, it flows in the order of A → B → C → D → E.

[0004] The flow up to discharging the purified water will be described. In FIG. 11, reference numeral 11 denotes a changeover switch housing, 1
A connecting pipe 2 connects the changeover switch housing 11 and the cartridge 6 containing the filter medium. The inside of the cartridge 6 includes a first partition plate 15 in which a filter is inserted in order in the flow direction of water, a nonwoven fabric 21, and an activated carbon layer 1.
3. A second partition plate 16 in which a filter is inserted is formed on the outer peripheral side, and a hollow fiber membrane 14 is arranged on the inner peripheral side. Further, a flow rate checker 17 for notifying the clogging of the hollow fiber membrane 14 to the outside is provided on the secondary side of the cartridge 6. The flow checker 17 is used for the cartridge 6
Pressure receiving body 18 that receives the discharge pressure of the purified water discharged from the water, and a spring 19 that urges the pressure receiving body 18 from the opposite side to the flow direction of the water. In order to check the operation of the pressure receiving body 18 from the outside, It is covered with a transparent casing 20.

When the switching lever 10 is at the position for discharging the purified water, the passage of the water is switched to the purified water side by the switching switch housing 11, and flows into the cartridge 6 through the connecting pipe 12. Then, it passes through the first partition plate 15, the nonwoven fabric 21, the activated carbon layer 13, and the second partition plate 16 provided on the outer peripheral side of the cartridge 6 in order, where impurities and free residual chlorine are removed. And flows into the hollow fiber membrane 14 at the end of
The purified water from which general bacteria and the like have been removed is discharged from the purified water discharge port 9 after the flow rate is checked by the flow rate checker 17.

Here, the connection between the main body containing the changeover switch housing 11 for switching the water passage and the cartridge containing the filter medium is detachably connected because the connecting pipe 12 and the cartridge 6 are provided with a screw structure. ing.

[0007]

In the conventional faucet direct-connect type water purifier, the connection between the main body containing the changeover switch housing 11 for switching the water passage and the cartridge containing the filter medium and the like is performed by the connecting pipe 12 and the cartridge 6. A screw structure is provided, and the cartridge unit is rotated and connected to the main body. Since several rotations are required for attachment and detachment, there is a problem in assemblability. Also, the connecting pipe 12 has an O to prevent external leakage.
Since the ring is provided and it takes time until the next cartridge replacement, the O-ring is fixed, which causes a problem that the attachment and detachment of the cartridge becomes hard.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a faucet direct connection type water purifier which is excellent in assemblability at the time of attachment and detachment by adopting a new connection structure.

[0009]

In order to achieve the above object, a faucet direct connection type water purifier according to the present invention comprises a main body comprising a changeover switch for switching a water passage, an upper and lower cover, and a filter medium for filtering tap water. And a cartridge having a different shape at a position orthogonal to the insertion direction of the shaft seal portion at a center axis symmetric position at a position orthogonal to the insertion direction of the shaft seal portion, and the shaft seal. Two arc ribs are provided at positions concentric with the center axis of the part and perpendicular to the claw, and the main body side has the O-ring for shaft sealing, into which the claw is fitted. Two arc ribs are provided at two positions concentric with the hole and the central axis of the shaft seal portion and orthogonal to the hole, respectively, and the cartridge is formed by fitting the claw, the hole, and the arc rib. Wherein the you are attaching and detaching to the body. ADVANTAGE OF THE INVENTION According to this invention, it is not necessary to perform rotation work when connecting a cartridge to a main-body part, and since there is no sticking of an O-ring etc., it is easy to assemble and a faucet direct connection type water purifier which can easily attach and detach a cartridge. Can be provided.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a water purification system comprising a main body composed of a changeover switch for switching a water passage and upper and lower covers, and a cartridge containing a filter medium for filtering tap water. Connection structure in the vessel,
The cartridge includes a claw of a different shape at a position orthogonal to the insertion direction of the shaft seal portion at a center axis symmetric position, and an arc at a position concentric with the center axis of the shaft seal portion and perpendicular to the claw. A rib is provided at two places, and an O-ring for shaft sealing is provided on the main body side. An arc is concentric with the hole into which the claw is fitted and the center axis of the shaft sealing portion and orthogonal to the hole. Two ribs are provided at each position, and the cartridge is attached to and detached from the main body by fitting claws, holes, and arc ribs. According to this configuration, there is no need to perform operations such as rotation when attaching / detaching the cartridge to / from the main body, and since there is no sticking of the O-ring or the like, the assembling property is good and the cartridge can be easily attached / detached.

In the invention described in claim 2, the arc rib provided on the cartridge side is a position for holding the arc rib provided on the main body side when the cartridge is fixed. According to this configuration, there is no need to perform operations such as rotation when attaching / detaching the cartridge to / from the main body, and since there is no sticking of the O-ring or the like, the assembling property is good and the cartridge can be easily attached / detached.

According to the third aspect of the present invention, the claw is provided with a locking rib. According to this configuration, the rib is fitted into the groove provided in the main body, so that the cartridge does not easily come off the main body.

According to a fourth aspect of the present invention, the gap between the claw portion and the receiving surface becomes smaller as the cartridge is rotated on the receiving surfaces of the upper and lower covers constituting the main body with which the rib provided on the claw contacts. The slope was set to go. According to this configuration, no force is required from the initial stage of rotating the cartridge, and the cartridge is easily tightened because the cartridge is gradually tightened.

According to a fifth aspect of the present invention, the connection between the main body and the cartridge has a structure in which the locking rib provided on the claw portion is fitted on the main body receiving surface by elasticity. According to this configuration, when removing the cartridge, it is necessary to have enough force to ride on the receiving surface of the main body.
Even if an unexpected force is applied in the direction in which the cartridge comes off, the cartridge does not come off.

According to a sixth aspect of the present invention, the upper and lower covers constituting the main body are provided with grooves into which locking ribs provided on the claws when the cartridge is rotated and fixed are fitted. According to this configuration, since the locking rib provided on the claw of the cartridge fits into the groove, the cartridge is less likely to come off the main body.

According to a seventh aspect of the present invention, the cartridge has a shape in which the distal end of the connecting portion fitted into the main body is thin. According to this configuration, when fitted to the main body, the distal end of the connecting portion is thin, so that it can be easily inserted into a counterpart.

According to an eighth aspect of the present invention, when the cartridge is fixed, the cartridge main body and the claws provided on the cartridge sandwich the upper and lower covers constituting the main body. In the assembled state, since the claws provided on the cartridge are securely fitted into the main body, the cartridge does not come off in the insertion direction.

According to the ninth aspect of the present invention, the two holes formed in the upper and lower covers constituting the main body and corresponding to the shapes of the claws have different shapes. According to this configuration, the cartridge is prevented from being reversely inserted, and is not erroneously attached.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a water purifier according to an embodiment of the present invention.

FIG. 1 is an external view of a faucet direct connection type water purifier according to one embodiment of the present invention, FIG. 2 (a) is a cross-sectional view of a faucet direct connection type water purifier according to one embodiment of the present invention, and FIG. b)
FIG. 3 is a vertical cross-sectional view of a faucet direct-connection type water purifier according to an embodiment of the present invention. FIG. ) Is a top view of the cartridge of the faucet direct-connection type water purifier in one embodiment of the present invention, FIG. 4B is a side view of the cartridge of the faucet direct-connection type water purifier in one embodiment of the present invention, and FIG. a) is a rear view of an upper cover that constitutes a faucet direct-connection type water purifier main body according to an embodiment of the present invention, FIG.
(B) is a rear view of a lower cover constituting a faucet direct-connection type water purifier main body according to one embodiment of the present invention, and FIG. 6 is an inclined surface (FIG. 6) of a faucet direct-connection type water purifier upper and lower cover according to one embodiment of the present invention. 7 and FIG. 7 are perspective views of a receiving surface and a groove, and FIG. 7 is a view of a main body connecting portion when a cartridge is attached to a faucet direct-connection type water purifier according to an embodiment of the present invention (cartridge claws and arc ribs are hatched). 8 is a deformed view of the nail when the cartridge nail is attached by elasticity of the nail when the main body is connected, and FIG. 9 is a state when the cartridge is completely attached to the faucet direct connection type water purifier according to the embodiment of the present invention. The figure of a main-body connection part (a cartridge nail | claw and an arc rib come in the position of the oblique line). In the following embodiments, members corresponding to those of the water purifier described in the related art are denoted by the same reference numerals.

In FIG. 1, 1 is a faucet, 2 is a joint, 3 is a nut, 4 is an upper cover, 5 is a lower cover, 6 is a cartridge, 9 is a purified water discharge port, 33 is a raw water discharge port, and 10 is a switching lever. . The raw water discharge port 33 does not have to be formed integrally with the lower cover 5. When the switching lever 10 is in the raw water mode, water flows from A to F, and when in the water purification mode, water flows from A to B, C, D, and E. The description of the faucet direct connection type water purifier in one embodiment of the present invention is two modes of purified water and raw water, but it is also possible to use a plurality of more modes.

The flow up to discharging the purified water will be described. In FIG. 2A, reference numeral 11 denotes a changeover switch housing, and reference numeral 27 denotes a cartridge connecting portion that connects the changeover switch housing 11 and the cartridge 6 containing a filter medium.
Reference numeral 34 denotes an O-ring attached to the changeover switch housing 11, which seals a connecting portion when the cartridge is rotationally mounted with the cartridge insertion direction as an axis. Inside the cartridge 6, the nonwoven fabric 21, the first partition plate 15, the activated carbon layer 13, the nonwoven fabric 21, and the second partition plate 16 are sequentially arranged on the outer peripheral side in the water flow direction, and on the inner peripheral side. Hollow fiber membrane 14
Is arranged. Further, a flow rate checker 17 for notifying the clogging of the hollow fiber membrane 14 to the outside is provided in the cartridge 6.
It is provided on the next side. The flow checker 17 is a pressure receiving member 18 that receives the discharge pressure of the purified water discharged from the cartridge 6.
And a spring 19 for urging the pressure receiving body 18 from the opposite side to the flow direction of the water. The spring 19 is covered with a transparent casing 20 to check the operation of the pressure receiving body 18 from the outside.

When the switching lever 10 is in the position for discharging the purified water, the passage of the water is switched to the purified water side by the switching switch housing 11 and flows into the cartridge 6 through the cartridge connecting portion. Then, the first partition plate 15, the nonwoven fabric 21, the activated carbon layer 13, and the second partition plate 16 provided on the outer peripheral side of the cartridge 6 are sequentially passed,
Here, the purified water from which impurities and free residual chlorine and the like have been removed and which have been turned over at the end of the cartridge 6 and flowed into the hollow fiber membrane 14 to remove fine turbidity, general bacteria, etc., have a flow rate checker 17 to control the flow rate. After being confirmed, the water is discharged from the purified water discharge port 9.

Next, the connection between the faucet directly connected type water purifier main body and the cartridge will be described in detail. 2 (b), FIG. 3, FIG. 4 (a), (b), FIG. 5 (a), (b), FIG.
7 and 8, reference numeral 22 denotes a claw having a different shape provided at a vertically symmetrical position with respect to the insertion axis of the main body of the cartridge 6;
Is an arc rib provided at a position 90 degrees with respect to the claw 22,
24 is a groove-shaped hole provided in the main body at a position symmetrical with respect to the main body insertion axis and in conformity with the shape of the claw 22 of the cartridge 6;
Is an arc rib provided on the main body side. Reference numeral 26 denotes a projection provided on at least one of the grooves provided in the main body to prevent the cartridge from being inserted backward. When the cartridge is inserted, the claws 22 of the cartridge are aligned with the groove-shaped holes 24 of the main body. At this time, the claw 22 of the cartridge 6 is positioned at the hatched portion a shown in FIG.
At the position of the hatched portion b shown in FIG. When the cartridge 6 is inserted into the main body, the diameter of the portion A of the connecting portion 27 of the cartridge 6 is smaller than the diameter of the portion B (see FIG. 4), so that the cartridge 6 can be easily inserted. After being inserted until it hits the changeover switch housing 11, it is rotated 90 degrees in the normal direction. At this time, a stopper 28 is provided on the upper and lower covers so that the cartridge 6 does not rotate in a direction opposite to the normal direction.

Then, as the cartridge 6 is inserted and turned in the normal direction, the rib 29 provided on the claw 22 of the cartridge 6 comes into contact with the inclined surface 30 of the upper and lower covers, and then rides on the receiving surface 31 of the upper and lower covers. (The state in which the claw 22 is elastically deformed: see FIG. 8).
Fit into 2. Further, after the connection is completed, the stoppers 28 of the upper and lower covers prevent the cartridge 6 from further rotating.

On the other hand, the arc rib 2 provided on the cartridge 6
3 rotates in the direction of the arrow from the time when the cartridge 6 is set in the main body (see FIG. 7), and assumes the position shown in FIG. 9 when the coupling of the cartridge 6 is completed. At this time, since the arc ribs 23 of the cartridge 6 hold both ends of the arc ribs 25 of the main body in the vertical direction, the upper and lower covers may be disengaged even when the upper and lower covers respectively act to open in the vertical direction. Is gone. The cartridge 6
When the cartridge 6 is inserted, the claw 22 is located at the position where the groove-shaped hole 24 on the main body side is located (left and right direction), but when the cartridge is rotated to complete the connection, the position of the claw 22 is 2B, the cartridge 6 and the claw 22 are in the positional relationship of sandwiching the upper and lower covers, so that the cartridge 6 does not come off in the insertion axis direction.

Here, the shape of the claw 22 provided on the cartridge 6 is not limited to the shape of the present embodiment, but may be another shape such as a fan shape. Also, the positional relationship of the claws 22 need not be symmetrical, but may be provided at one or more locations.

The protrusion 26 of the groove-shaped hole 24 on the main body side prevents the cartridge 6 from being inserted backward. However, the present invention is not limited to this. For example, the width of the claw 22 provided on the cartridge 6 may be changed, By making the length of 22 different, reverse insertion may be prevented. Further, the ribs 29 provided on the pawls 22 of the cartridge 6 are provided on the two pawls 22, but may be provided on at least one of them.
Further, the positional relationship between the claw 22 and the arc rib 23 of the cartridge 6 is provided symmetrically in the vertical direction. Position). In this case, the main body side is provided with the claw 22 and the arc rib 23 of the cartridge 6.
A groove-shaped hole 24 and an arc rib 25 may be provided in accordance with the above. The angle of the inclined surface 30 of the upper and lower covers with which the rib 29 provided on the claw 22 of the cartridge 6 comes into contact is not particularly limited. However, if the angle is steep, it becomes hard when the cartridge 6 is mounted. Is desirable.
Further, in the present embodiment, the method of connecting the main body and the cartridge 6 by using the elastic deformation of the claw 22 provided on the cartridge has been described, but the connection method by the elastic deformation of the main body side connection portion may be used.

[0029]

According to the present invention, there is provided a water purifier comprising a main body composed of a changeover switch for switching a water passage, an upper and lower cover, and a cartridge containing a filter medium for filtering tap water. A claw of a different shape at a central axis symmetrical position at a position orthogonal to the insertion direction of the shaft seal portion, and an arc at a position concentric with the central axis of the shaft seal portion and orthogonal to the claw. Two ribs are provided, respectively, and the main body side has the O-ring for shaft sealing, and is concentric with the hole into which the claw is fitted and the center axis of the shaft sealing portion and with respect to the hole. Two arc-shaped ribs are provided at orthogonal positions, and the claw,
The cartridge is connected to the main body by fitting the holes and the arc ribs. According to the present invention, it is possible to prevent the cartridge from coming off in the insertion direction when the cartridge is mounted and fixed, and to provide the upper and lower covers with the arc rib for holding the arc rib formed on the main body at a position orthogonal to the claw. Since the fitting of the holding upper and lower covers is prevented, the cartridge can be securely connected to the main body. Accordingly, there is no need to perform operations such as rotation when attaching / detaching the cartridge to / from the main body, and there is no need for an O-ring, so there is no sticking, and a faucet direct-connection type water purifier that can easily attach / detach the cartridge is provided. Can be.

[Brief description of the drawings]

FIG. 1 is an external view of a faucet direct connection type water purifier according to an embodiment of the present invention.

FIG. 2A is a cross-sectional view of a tap water purifier according to an embodiment of the present invention. FIG. 2B is a longitudinal sectional view of a tap water purifier according to an embodiment of the present invention.

FIG. 3 is a view of a main body connecting portion of the faucet direct-connection type water purifier according to the embodiment of the present invention before a cartridge is attached.

FIG. 4A is a top view of a cartridge of a tap water purifier according to an embodiment of the present invention. FIG. 4B is a side view of a cartridge of a tap water purifier according to an embodiment of the present invention.

FIG. 5A is a rear view of an upper cover constituting a main body of a faucet direct-connection type water purifier according to an embodiment of the present invention. FIG. Back view of bottom cover

FIG. 6 is a perspective view of an inclined surface, a receiving surface, and a groove of the upper and lower covers of the faucet direct connection type water purifier according to the embodiment of the present invention.

FIG. 7 is a view of a main body connecting portion of the faucet direct connection type water purifier according to the embodiment of the present invention when a cartridge is attached.

FIG. 8 is a modified view of a nail when the cartridge nail is attached by elasticity of the nail when the main body is connected.

FIG. 9 is a view of a main body connecting portion of the faucet direct-connection type water purifier according to the embodiment of the present invention when the cartridge is completely mounted.

FIG. 10 is an external view of a conventional water tap directly connected to a faucet.

FIG. 11 is a top view and a cross-sectional view of a conventional faucet direct connection type water purifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Faucet 2 Joint 3 Nut 4 Upper cover 5 Lower cover 6 Cartridge 7 Raw water straight discharge port 8 Raw water shower discharge port 9 Purified water discharge port 10 Switching lever 11 Switching switch housing 12 Connecting pipe 13 Activated carbon layer 14 Hollow fiber membrane 15 First partition Plate 16 Second partition plate 17 Flow rate checker 18 Pressure receiver 19 Spring 20 Transparent casing 21 Nonwoven fabric 22 Claw 23 Cartridge-side arc rib 24 Groove hole 25 Body-side arc rib 26 Projection 27 Cartridge connection part 28 Stopper 29 Rib 30 Inclined surface 31 Receiving surface 32 Groove 33 Raw water discharge port 34 O-ring

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenji Kido 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 72) Inventor Yosuke Koga 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. 2D060 CD09 4D024 AA02 AB11 BA02 BB05 CA04 CA05 CA13 CA15 DB05

Claims (9)

[Claims] 1. A connection structure in a water purifier comprising a main body composed of a changeover switch for switching a water passage and an upper and lower cover, and a cartridge containing a filter medium for filtering tap water, wherein the cartridge has A claw of a different shape at a central axis symmetrical position at a position orthogonal to the insertion direction of the shaft seal portion, and an arc at a position concentric with the central axis of the shaft seal portion and orthogonal to the claw. Two ribs are provided, respectively, and the main body side has the O-ring for shaft sealing, and is concentric with the hole into which the claw is fitted and the center axis of the shaft sealing portion and with respect to the hole. A faucet direct-connection type water purifier, wherein two arc ribs are provided at orthogonal positions, and the cartridge is connected to the main body by fitting the claws, the holes, and the arc ribs. 2. The apparatus according to claim 1, wherein the arc rib provided on the cartridge side is provided at a position for holding the arc rib provided on the main body side when the cartridge is fixed. Faucet direct connection type water purifier. 3. The water tap according to claim 1, wherein said pawl is provided with a locking rib. 4. A receiving surface of the upper and lower covers constituting the main body, which comes into contact with a rib provided on the pawl, is provided with an inclination so that a gap between the pawl portion and the receiving surface becomes smaller as the cartridge is rotated. The faucet direct connection type water purifier according to any one of claims 1 to 3, wherein: 5. The device according to claim 1, wherein the connection between the main body and the cartridge is performed by causing a locking rib provided on the claw portion to ride on the main body receiving surface by elasticity. Faucet direct connection type water purifier. 6. The apparatus according to claim 1, wherein said upper and lower covers forming said main body are provided with grooves into which locking ribs provided on said claws are fitted when said cartridge is rotated and fixed. Faucet direct connection type water purifier described in Crab. 7. The water purifier according to claim 1, wherein a tip of a connecting portion fitted to the main body of the cartridge is thin. 8. The cartridge according to claim 1, wherein when the cartridge is fixed, the claw provided on the cartridge main body and the cartridge sandwiches the upper and lower covers constituting the main body. A faucet direct connection type water purifier according to any of the above. 9. The device according to claim 1, wherein the two holes formed in the upper and lower covers of the main body and corresponding to the shapes of the claws have different shapes. Faucet direct connection type water purifier.