JPS6310856Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement to a water purifier used in ordinary households to remove odors particular to tap water when it is used for drinking, and also to remove trace amounts of harmful substances. More specifically, the invention aims to provide a water purifier which, when filtered water is taken out from the top discharge pipe, is not only rotatable so that the water can be taken out from either the front, back, left or right, but also has a discharge pipe which can be rotatably moved stably and reliably while maintaining watertightness even when a slight downward or upward load is applied to the discharge pipe, i.e., a water purifier which is equipped with a connection means which satisfies the above-mentioned conditions between the discharge pipe and the water purifier main body case.

The present invention aims to provide a water purifier that achieves the above-mentioned objectives in a water purifier and is equipped with a connecting means that can be easily manufactured and mass-produced as a simple component configuration, and its gist is as follows: A cylindrical water supply pipe having a through hole inside is formed with a recess having a stepped peripheral edge on the outer surface of the top with a filter medium inside, and a recessed step is provided around the outer peripheral surface at the center of the recess. The main case has a main body case that is erected in a watertight manner with a part protruding, and a flange large enough to fit into and rotate with at least the lower edge in contact with the recess of the main case. A hollow space with an open bottom surface is provided inside, and the inner diameter is such that it can be fitted onto the end of a cylindrical water supply pipe formed by protruding into the recess of the main body case approximately in the center of the hollow space, and the tip thereof has a plurality of ends. A fitting part that is divided and has a locking claw on the inner surface of the main body case that can be engaged with the concave stepped part of the main body case is provided, and the discharge pipe is communicated with the space inside the fitting part and maintained watertight. A protruding cap, a cylindrical water supply pipe protruding into the recess of the main body case, and an O-ring on one of the fitting parts of the cap, and the other fitting part fits into the cylindrical water supply pipe. It comprises a rotary water seal means having surfaces which, when assembled, contact the O-ring to maintain a watertight state and are rotatable relative to each other.

A water purifier embodying the invention is illustrated in FIG. That is, the main body case A has a cylindrical filter medium 1 made of layered activated carbon, calcium carbonate, etc. inside, and a part of the cylindrical water supply pipe 6 which is erected and penetrates approximately the center of the filter medium 1 is placed at the top. 2. A state in which the outside surface protrudes into the center of a recess 4 formed with a stepped portion 3 on the periphery, for example, the cylindrical water supply pipe and the main body case A are integrally molded, or the connecting portion is made of ordinary rubber gasket. The cylindrical water supply pipe protruding end 11 is positioned in a watertight manner by crimping or the like with the help of a material such as a cylindrical water supply pipe. The cap B has a flange 9, a fitting part 14 is disposed inside the flange 9 at approximately the center of a space 10 with an open bottom surface, and communicates with a space 15 inside the fitting part 14. It is formed with a discharge pipe 16 that is protruded while maintaining watertightness by fixing it with a normal water-insoluble adhesive, and the flange 9 is at least in contact with the recess 4 of the main body case A. The outer circumferential lower edge 8 of the flange 9 or the lower surface of the flange (not shown) is sized so that the flange can be rotated by being fitted in abutting state, and the inner diameter of the cylindrical fitting part 14 is the same as that of the main body case. Projecting end 11 of the cylindrical water supply pipe in A
The distal end of the fitting portion 14 is divided into a plurality of pieces, and on the inner surface of the divided piece 12 is a locking pawl 13 that can be engaged with the concave stepped portion 7 of the protruding end 11 of the cylindrical water supply pipe. is formed. As a rotary water sealing means when fitting this cap B to the cylindrical water supply pipe 6 of the main body case A, an O ring made of rubber or synthetic resin is attached to the outer peripheral surface of the cylindrical water supply pipe protruding end 11 in the illustrated example. 18. Preferably, the inner peripheral surface of the fitting part 14 is brought into contact with the O-ring 18 under a state in which a slight tensile force is applied inwardly within its elastic range, and the O-ring 18 is brought into contact with the inner peripheral surface of the O-ring 18 around its entire circumference. By forming a fitting relationship to the extent that a slight compressive deformation occurs in the direction, a watertight state is maintained and mutual rotation is possible.
Further, although not shown, the O-ring 18 may be provided not on the cylindrical water supply pipe 6 but on the inner circumferential surface of the fitting part 14 of the cap B. In this case, a concave groove is provided on the inner circumferential surface to accommodate the O-ring. By fitting the protruding end 11 of the cylindrical water supply pipe and the O-ring, the outer circumferential surface of the protruding end 11 contacts the inner circumferential side of the O-ring, and the O-ring is slightly compressed outward around its entire circumference. Similar effects can be obtained if a certain degree of fitting relationship is established.

The method for assembling the cap B and the main body case A is to position the upper surface of the cylindrical water supply pipe protruding end 11 of the main body case A on the lower surface of the fitting part 14 of the cap B.
When pressed downward, the elastic force of the material of the divided piece 12 of the fitting part 14 causes the divided piece 12 to open outward by the protruding thickness of the locking claw 13.
While maintaining contact between the inner surface of the fitting portion 14 and the outer surface of the O-ring 18, the latch claw 13 may be press-fitted into the outer surface of the water supply pipe projecting end 11 until the latch claw 13 is hooked on the recessed step portion 7.

However, in this water purifier, even if a certain downward or upward load is applied to the protruding discharge pipe 16, the center of the cap B to which the discharge pipe 16 is fixed will be stuck to the latch claw 13, as shown in FIG. By engaging with the concave stepped portion 7, the collar portion 9 is prevented from coming off upwardly, and the outer peripheral lower edge 8 and lower surface of the collar portion 9, which corresponds to a lever arm, abuts against the recess 4 on the top surface of the main body case, and rotates in the vertical direction. Cap B resists movement, which adversely affects the rotation of the discharge pipe 16 and cap B, as well as the water sealing function.
In addition, distortion and misalignment of the fitting portion 14 can be prevented. Here, it is preferable that the size of the flange 9 corresponding to the lever arm, that is, the lower edge 8 of the flange outer periphery where the flange 9 comes into contact with the recess 4 on the top surface of the main case, be as large as possible. Of course, it goes without saying that it is most preferable if the lower edge 8 of the outer periphery of the flange is circular, which further stabilizes the rotation of the cap B and the discharge tube 16. or,
Main body case A excluding bottom plate 24 and discharge pipe 16
The cap B part, excluding the cap, can be manufactured by integral molding using synthetic resin, etc., and can be expected to have high manufacturing accuracy and can be mass-produced.

Note that the flow of water within this water purifier is indicated by a dashed-dotted line in FIG. In other words, the unfiltered water flowing from the introduction connection shown by 25 in the figure ascends between the inner surface of the side of the main body case A and the outer surface of the side of the filter medium 1, and is filtered by settling and flowing down from the top surface of the filter medium 1 into the inside of the filter medium 1. The filtered purified water ascends through the lower open end of the cylindrical water supply pipe 6 passing through the center of the filter medium 1, and is taken out of the vessel through the discharge pipe 16. In the figure, 28 is an air vent.

The embodiment shown in FIG. 3 and FIG. 4 showing details thereof is an example of a configuration in which the rotary water seal function is further improved and mass production is possible using cheaper manufacturing equipment. That is, a cylindrical body 21 is integrally formed vertically in place of the fitting part 14 in the hollow space 10 in the cap flange, and this cylindrical body 21
A separate fitting part 14', which corresponds to the fitting part 14 in FIG. A locking piece 17 is provided vertically, and a locking claw 1 is provided on the inner surface of the end of the locking piece 17, which can be engaged with the concave step 7 of the cylindrical water supply pipe.
3', and an inclined surface 19 which comes into contact with the O-ring 18 of the cylindrical water supply pipe is formed on the inner peripheral surface of the fitting part 14'. However, when the fitting part 14' of the cap B is press-fitted onto the outer surface of the protruding end 11 of the cylindrical water supply pipe and the latching claw 13' is latched in the concave stepped part 7, the slanted surface 19 is The inclined surface 19 is formed in such a position that it comes into contact with the outer peripheral surface of the O-ring 18 and causes the outer peripheral surface of the O-ring 18 to be slightly compressed and deformed. By providing this inclined surface 19, the water sealing function is further enhanced and the fitting portion 1
It is also possible to absorb slight dimensional errors in the inner diameter of the O-ring 4' and the outer diameter of the O-ring 18. In addition, by forming the divided piece 12 with the latch claw into the comb-like locking piece 17, smooth press-fitting of the cap B into the main body case A can be expected during assembly work, and a slight misalignment of the press-fit can be avoided. It also allows for assembly in a predetermined position.

In addition, in this embodiment, in order to enable integral molding with a common inexpensive mold, the discharge pipe 16 of the cap B is attached to the outer surface or inner surface, in this example, the inner surface,
The discharge pipe 16 is molded into a shape with an opening 22 at the top.
A member 2 for closing the opening 22 after fixing the
A manufacturing method of fixing 3 is used.

The screw-in type bottom plate and the main body case A shown at 24 in the figure are screwed together and compressed via a watertight ring made of rubber or synthetic resin, which is the usual water-stopping means. However, as the filtering performance of the filter medium 1 inside the interior deteriorates over time, the bottom plate 24 must be removed to periodically replace the filter medium 1, and the watertight ring is repeatedly compressed and released, resulting in a normal cross-section. In a circular ring, the restoring force of the cross-sectional shape is likely to deteriorate due to the material, and the water-stopping function is likely to deteriorate.In this example, the cross-section is approximately X-shaped or approximately Y-shaped.
A watertight ring (not shown) is used.
In addition, when the bottom plate 24 is periodically removed, the bottomed hole 26 shown in the figure of the bottom plate 24 is tightly screwed into the bottom plate 24 through a watertight ring.
By inserting a rod-shaped body 27, such as a screwdriver, into the bottom plate 6 and rotating the bottom board 24 with the rod-shaped body 27, the bottom plate 24 can be easily removed.

In the water purifier according to the present invention constructed as described above, when taking out filtered water from the discharge pipe at the top of the water purifier, the inner diameter of the fitting part vertically installed approximately in the center of the hollow space on the bottom surface of the cap is connected to the recess on the top surface of the main body case. Since it is sized so that it can be fitted externally to the cylindrical water supply pipe that protrudes from the center, the discharge pipe can be rotated and taken out from either the front, back, left or right, and it is also possible to avoid some downward or upward loads on the discharge pipe. Even if the inner surface of the fitting part is in contact with the outer circumferential surface of the O-ring provided around the cylindrical water supply pipe, and a slight compressive deformation is applied to the outer circumferential surface of the O-ring, the latch claw of the split piece will The cap is hooked onto the concave step on the outer circumferential surface of the cylindrical water supply pipe to prevent the cap from coming off, and at least the lower edge or lower surface of the outer circumference of the cap flange abuts the recess on the top of the main body case, and the fitting portion is levered by the action of the arm. In order to resist vertical rotation around the center, stable and reliable rotational movement is possible while maintaining watertightness, and the main body case part excluding the bottom plate and the cap part excluding the discharge pipe are made of synthetic resin. It is possible to provide a water purifier that can be manufactured with high manufacturing precision by integral molding using materials such as the above, and that is easy to manufacture and can be mass-produced by simplifying the component configuration.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment embodying the present invention, Fig. 2 is an enlarged sectional view of main parts of the embodiment in Fig. 1, and Fig. 3 is an exploded perspective view of another embodiment according to the invention. FIG. 4 is an enlarged sectional view of a main part of the embodiment shown in FIG. 3. A... Main body case, B... Cap, 1... Filter medium, 2... Top of water purifier, 3... Step, 4... Recess, 5... Through hole, 6... Cylindrical water supply pipe, 7 ...Concave stepped portion, 8...Lower edge of the outer periphery of the flange, 9,9'...Flame,
10... Hollow space inside the collar, 11... Projecting end of the cylindrical water supply pipe, 12... Divided piece, 13, 13'... Latching claw,
14, 14'...Fitting part, 15...Fitting part internal space,
16... Discharge pipe, 17... Locking piece, 18... O ring, 19... Inclined surface, 20... Head, 21...
Cylindrical body, 22... Opening, 23... Closing member, 24...
...Bottom plate, 25...Introduction connection part, 26...Bottomed hole,
27...rod-shaped body, 28...air vent.

Claims (1)

[Claims for Utility Model Registration] 1. A recess 4 with a stepped portion 3 at the periphery is formed on the outer surface of the top 2, and a cylindrical water supply pipe 6 having a through hole 5 is inserted into the recess. A main body case A is provided with a concave stepped portion 7 around the outer circumferential surface at the central portion of the main body case A, and is erected while maintaining watertightness with a portion protruding; and at least a lower edge 8 in the recess 4 of the main body case A. has a flange 9 large enough to be fitted and rotated in an abutting state, has a cavity 10 with an open bottom surface inside, and projects into the recess 4 of the main body case A approximately at the center of the cavity 10. A latching claw that has an inner diameter that can be externally fitted onto the end 11 of the cylindrical water supply pipe 6 that is provided, the tip of which is divided into a plurality of pieces, and that can be engaged with the concave stepped portion 7 of the main body case on the inner surface of the divided piece 12. a cap B having a fitting part 14 having a diameter 13 therein, communicating with a space 15 in the fitting part 14, and protruding a discharge pipe 16 while maintaining watertightness; and a recess in the main body case. An O-ring 18 is provided on one of the cylindrical water supply pipe 11 protruding from the cylindrical water supply pipe 11 and the fitting part 14 of the cap B, and when the other fitting part 14 is fitted into the cylindrical water supply pipe 11, the O-ring 1. A water purifier comprising: a rotary water seal means having a surface that is in contact with the water seal member 18 to maintain a watertight state and is rotatable with respect to the water seal member 18; 2. A cylindrical water supply pipe formed by fitting an O-ring 18 slightly below the tip of the cylindrical water supply pipe 6 and further forming a concave step 7 below the O-ring 18, and a comb-like shape at the bottom. A locking piece 17 is provided vertically, and the locking piece 1
A fitting part 14' is provided on the inner surface of the seventh end with a hook 13' that can be engaged with the concave stepped part 7, and an inclined surface 19 that contacts the O-ring 18 of the cylindrical water supply pipe is formed on the inner surface. A water purifier according to claim 1 of the utility model registration claim, characterized by: 3. The cap has a flange 9' at the bottom, a cap-like head 20 is formed continuously at the upper end of the flange 9', and a discharge pipe 16 is protruded from the head 20. A water purifier according to claim 1 or 2 of the utility model registration claim characterized by: 4. A cylindrical body 21 is integrally molded and hung vertically on the inner surface of the cavity 10 of the cap B as a fitting part, and a part corresponding to the fitting part 14 of the cap connected to the tip of the discharge pipe is fixed inside the cylindrical body 21. Claims 1 or 2 of claims for utility model registration characterized by:
The water purifier described in item 3 or item 3. 5. Cap B for attaching the discharge pipe A cap is used in which an opening 22 is formed on the outer surface or inner surface of the cap B at the corresponding location, and after the discharge pipe 16 is attached, the opening is closed and fixed with a member 23. A water purifier according to claim 1, 2, 3, or 4 of the utility model registration claim.