JP2883788B2 - Cover attachment device for filtration tube in bath water filtration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water filtration device for circulating and purifying bath water which is connected to a bathtub by piping.
The present invention relates to an improvement in a filter tube cover attaching device which can be quickly and reliably removed or filled with a filter medium or exchange work or the like.

[0002]

2. Description of the Related Art A variety of so-called bath water circulating bath tub devices for keeping bath water clear and maintaining a constant hot water temperature have been developed. This type of bathtub device has a heating device that keeps the bathwater at a constant temperature, and a filtration device that removes foreign matter such as fine dust and scale floating in the bathwater to keep the bathwater clear and active at all times. The apparatus and a sterilizing apparatus for treating bacteria in the bath water with ultraviolet rays or the like are each connected by piping so as to be able to communicate with the bathtub. And, for example, when the bathtub device is installed in a general household, bath water can be used at any time for 24 hours by repeatedly using the bath water without replacing it every day, which is convenient.
Moreover, it has the feature of saving water.

[0003]

However, in the above-mentioned circulation type bathtub apparatus, in order to keep the bathwater clear because the bathwater is circulated and purified, it is necessary to fill the inside of the filter cylinder of the filtration device. It was necessary to periodically replace the used filter media. However, since the filter tube filled with the filter medium is disposed in a bath water circulation path connected to a bathtub, and the filter medium itself is constantly immersed in water, each operation of storing and removing the filter medium is performed. Is not easy. Moreover, in the filter tube filled with the filter medium, since the bath water flows through the bath water circuit at a constant pressure by the circulation pump, the filter medium may be scattered in the bath water circuit unless the cover is firmly fixed. Was.

[0004] For this reason, conventionally, for example, when a filter medium is taken out from a filter tube in a filtration device and replaced, the cover of the filter tube is, for example, covered with the filter tube in order to prevent the filter medium from dissipating. After the crown, the cover was fastened to the filter tube using multiple tightening screws, or the cover itself was fixed by screwing it directly to the open end of the filter tube. In doing so, a tool such as a screwdriver was required, and a large force was required to tighten and loosen the screws and the like. Furthermore, since the work is performed in a narrow place in the bath water circulation path, much work and time are required to take out and put in the filter tube, and it is extremely difficult for a housewife or the like at home to easily change the filter medium. Was. For this reason, in the bath water circulation type bath tub device, every time the filter medium is filled or replaced, it is requested to an external specialist or the like, and so on.
There was a problem that the maintenance and management cost of the bath water circulation type bathtub device was made higher than necessary.

The present invention has been made in view of the above circumstances, and the cover provided on the filter cylinder is rotated by a one-touch operation so that the locking means provided on the cover side is fixed to the filter cylinder. A filter tube which can be arbitrarily locked and held or released so that the cover can be easily attached to and detached from the opening end of the filter tube, thereby quickly performing operations such as filling and replacement of a filter medium. It is an object of the present invention to provide a cover mounting device.

[0006]

According to the present invention, a locking step having a hook-shaped vertical cross section which engages with the opening end of the filter tube is provided on the outer peripheral edge of the cover, and the locking step has a vertical section. A locking projection is provided on the peripheral wall so as to be removably engaged with a horizontally long engagement groove provided inside the opening end of the filter tube at an interval of 180 °. Direction side), a locking hook protruding toward the outside of the peripheral wall of a lateral hole provided in the locking step at the distal end of the flat plate portion of the cover adjacent to the locking step, and having a base end side. The punching process is performed in such a manner that the plane shape of the operation knob protruding upward is substantially fan-shaped, and one part is left so that the locking hook can advance and retreat from the lateral hole formed in the peripheral wall of the locking step. Provided with a locking plate.

On the flat plate portion of the cover, a boss portion for detachably attaching a semicircular handle used for lifting the cover after covering the filter tube with the filter tube is provided on each of the locking steps. It is formed integrally with the flange at an interval of 180 ° from the inside of the flange provided at the upper part of the peripheral wall to the outside of the peripheral wall. Further, a boss protruding from the peripheral wall of the locking step adjacent to the engaging groove is engaged with the opening edge of the filter tube, and the cover is rotated at a constant angle in the circumferential direction. A cover mounting device is provided by providing a horizontally long cutout hole and a locking recess for locking the locking hook of the locking plate to stop the rotation of the cover.

[0008]

According to the present invention, by configuring as described above,
When the filter is filled with the filter medium and the cover is placed over the filter, the cover is placed over the filter by applying the boss of the cover to the notch hole provided at the opening end of the filter, and in this state, The cover is rotated in a direction in which the locking projection engages with the engaging groove of the filter tube, and the locking projection on the cover is fitted into the engaging groove. The cover can be attached to the opening end of the filter tube in almost one operation by engaging with the locking recess on the side. Also, when removing the cover, it is possible to easily remove the cover from the filter tube by performing the reverse operation of when attaching the cover.

When attaching and detaching the cover, it is only necessary to disengage the engaging plate and the engaging projection formed on the cover side with the corresponding engaging groove and engaging concave portion inside the opening end of the filter tube, respectively. The cover can be detachably attached to the filter tube in almost one operation. In addition, the locking means between the cover and the filter tube only needs to engage and disengage the locking plate and the locking protrusion formed on the cover side with the engaging groove and the locking recess formed on the filter tube side. Unlike the related art, no fixing member such as a tightening screw is required, which is convenient.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a bath water filtration device of a bath water circulation type bath tub device will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of a bath water circulating bathtub apparatus. In the drawing, reference numeral 1 denotes a bathtub, and 2 denotes a bathwater in a bathtub 1 for circulating filtration and sterilization, and the bathwater is heated to a constant temperature and heated. It is a bath water circulation device for performing. Reference numeral 3 denotes a bath water return port provided in the bathtub 1, and its tip is formed in, for example, a tapered shape in a nozzle shape. Reference numeral 4 denotes a bath water inlet, and a stainless mesh filter or the like is attached to the open end. The bath water return port 3 is connected to a bath water return pipe 5, and the bath water intake port 4 is connected to a bath water outflow pipe 6, and these return pipes 5 and the outflow pipe 6 are communicated with each other to form a bath water circulation path. 7 is constituted.

Next, the bath water outflow pipe 6 is connected to a bath water circulation path 7.
The circulating pump P is connected via a _first solenoid valve V1 to the suction port a side of the circulating pump P. On the discharge port b side of the circulation pump P, a bath water filtration device 8, a bath water heating device 10 having a built-in electric heater 9, a sterilization device 12 containing an ultraviolet lamp 11 for sterilization, and a second solenoid valve V ₂ Are connected to each other via a bath water return pipe 5 in the bath water circulation path 7. V ₃ is an electromagnetic valve for opening and closing the bath water return pipe 5 to open and close the atmosphere. The solenoid valve V ₃ is connected to the bath water return port 3 of the bath water return pipe 5 through the air flow pipe 13. by connecting possible side communicates with the case of opening the solenoid valve V _3, results in the bath water return pipe 5 communicates with the atmosphere, the bath water return port 3 occurs when returning the bath water in the bathtub 1 by a negative pressure in the vicinity of the air in the bath water circulating unit 2, so from the air flow pipe 13 can be discharged into the bathtub 1, if opening the electromagnetic valve V ₃ during the return of the bath water, the bathtub 1 Air bubbles can be easily jetted into the bath water inside.

Next, as shown in FIG. 2, the bath water filtration device 8 disposed in the bath water circulation path 7 connects the water inlet pipe c formed on the upper side to the discharge port b side of the circulation pump P, and A bottomed cylindrical filter connected to a bath water circulation path 7 composed of a bath water return pipe 5 and a bath water discharge pipe 6 by connecting a water discharge pipe d formed on the side to the water inlet side of the bath water heating device 10 respectively. A container 8a;
An umbrella-shaped lid 15 that covers the upper open end of the filtration container 8a so as to be openable and closable, and a number of through holes e that are inserted into and removed from the filtration container 8a and that allow bath water to pass through the bottom surface. A filter tube 16 having a bottomed cylindrical shape, and a porous natural stone filled with the inside of the filter tube 16 so that microorganisms can inhabit by permeating the bath water, for example, a filter medium 1 such as "barley stone".
7, a substantially flat cover 18 provided with a large number of through holes f through which bath water passes and covered by the upper open end g of the filter tube 16;
Further, the lid 15 is detachably engaged with the outer peripheral edge 15a of the lid 15 and a flange portion 19 provided around the open end of the filter container 8a so that the lid 15 can be detached from the filter container 8a. It is constituted by a well-known clamping band 20 provided with an operation lever, for example, for holding and fixing. In addition, in FIG.
Reference numeral 21 denotes an air vent valve of the filter tube 16 which is attached to the center of the bottom surface of the lid 15 upward.

Next, the structure of the locking means X provided on the cover 18 which covers the opening end g of the filter cylinder 16 so as to be openable and closable each time the filter medium 17 in the filter cylinder 16 is taken in and out will be described with reference to FIGS. It will be explained by. In FIG. 4, reference numeral 22 denotes a hook-shaped locking step which is fitted and locked on the inner peripheral surface of the opening end g of the filter tube 16 formed on the peripheral edge of the cover 18. The locking step 22 has a large number of through holes. f is formed integrally with the flat plate portion 23 of the cover 18 having the perforations. The locking step 22 is provided integrally with a peripheral wall h that slides on the inner peripheral surface of the opening end g of the filter cylinder 16 and a flange edge i that rides on the opening end g. As shown in FIG. 5, the inner peripheral edge of the flange edge i of the locking step 22 is
A pair of bosses 24 for attaching the handle 25 at an interval of 80 ° are formed integrally over the peripheral wall h. Reference numeral 26 denotes a horizontally long locking projection which bulges out from the vicinity of the boss 24 along the circumferential direction for a predetermined length (clockwise in FIG. 5) on the peripheral wall of the locking step portion 22.

Reference numeral 27 denotes a peripheral wall h of the flat plate portion 23 of the cover 18 on the tip side (clockwise direction in FIG. 5) of the locking projection 26.
With a locking plate punched out in a fan shape leaving a part adjacent to the side uncut,
As shown in FIGS. 4 and 5, the locking plate 27 extends outward from a lateral hole 29 formed in the peripheral wall h on the bridge portion 28 for supporting the locking plate 27 left behind along the peripheral wall h. A locking hook 30 provided at the distal end of the locking plate 27 protrudes from the locking plate 30 in a direction opposite to the locking hook 30 (a base end side away from the peripheral wall h). Operation knobs 31 are respectively formed. 32 is a gap cut along the periphery of the locking plate 27 in the flat plate portion 23;
Is formed so that the locking hook 30 can be advanced and retracted from the lateral hole 29 in the range of the gap 32 by the bridging portion 28. Reference numeral 33 denotes a support projection protruding from the flat plate portion 23 so as to face the operation knob 31 with a gap 32 therebetween.

Next, when the cover 18 is covered with the filter tube 16, the boss 24 engages the cover 18 to rotate the cover 18 at a predetermined angle along the periphery of the filter tube 16, as shown in FIG. In order to guide the movement, a laterally elongated notch formed in the periphery of the open end g of the filter tube 16 is provided. An inner peripheral edge of the filter tube 16 in front of the notch hole 34 (clockwise side in FIG. 4) is provided with a cover 18 side. An engagement groove 35 for engaging and retaining the locking projection 30 and the locking hook 30 of the locking plate 27 and a locking recess 36 are respectively formed in a recessed manner. 37 is a handle 25 having both ends inserted into the boss 24.
Is an inverted L-shaped pull-out preventing piece for preventing the pull-out from being removed from the boss portion 24 at the time of use. As shown in FIG.
The cover 25 is formed integrally with the flat plate 23 toward the upper side of the flat plate 23 with the base of the handle 25 in sliding contact therewith. Reference numeral 38 denotes a space formed between the pull-out preventing piece 37 and the flat plate portion 23 for removing the handle 25.

In FIG. 1, reference numeral 40 denotes the operation of various sensors and control devices for detecting and controlling hot water temperature which are mounted in the first to third solenoid valves V _{1 to} V ₃ , the circulation pump P and the bath water circulation path 7. This is a control device having a built-in CPU for controlling the device. Furthermore,
Reference numeral 42 denotes a remote control unit connected to the control device by, for example, a lead wire 43. The unit 42 includes a main switch, a temperature, a timer, various switches such as a heater, a display unit for displaying temperature and time, and the like. Is provided.

Next, the operation will be described. In the bath water circulating apparatus 2 having the above-described configuration, the bath water sucked from the bath water inlet 4 of the bath tub 1 is introduced into the bath tub circulating apparatus 2 through a bath water pipe 6. The bath water flowing into the bath water circulation device 2 is guided to the circulation pump P, and the bath water discharged by the pump P is then introduced into the bath water filtration device 8, and the filtering material 17 filled in the filter tube 16 is filled. When passing through, the pollutants such as fats and organic matter are removed, filtered into clear bath water, and flow into the bath water heating device 10. After the bath water flowing into the bath water heating device 10 is heated to a predetermined set temperature, a sterilization process is performed while flowing through the sterilization device 12, and the bath water return pipe 5 and the bath water return port 3 are closed. Circulates through the bathtub 1
As described above, the bath water can always be kept clear at a constant temperature.

As described above, in order to keep the bath water clear at all times, the filter medium 17 filled in the filter tube 16 is
If the filter is soiled by fine dust floating in the bath water, scale, etc., the filtering function is reduced. Therefore, it is necessary to periodically replace the filter medium 17. When replacing the filter medium 17, the cover 15 covered with the filter container 8a is first removed.
In this case, the circulation pump P is stopped in advance so that the bath water does not circulate in the circulation path 7. When the cover 15 is removed, the filter 15 is engaged with the flange 19 on the periphery of the open end of the filtration container 8a and the outer periphery 15a of the cover 15 covering the open end of the filtration container 8a. The operation lever (not shown) of the well-known tightening band 20, which integrally clamps and fixes the container 8a and the lid 15, releases the tightening of the tightening band 20 by manual operation, and opens the open end of the filtration container 8a. The lid 15 closing the filter is removed, and the filtration container 8 is removed.
Release a.

Next, when pulling out the filter tube 16 housed in the filter container 8a, the bosses 24, 2
4, a semicircular handle 25 pivotally supporting an end on the free end side is erected by hand from above the flat plate portion 23 of the cover 18 as shown in FIG. From the filtration container 8a. Then, the cover 18 is
In order to remove the handle H from the cover 18, as shown in FIG. 9, the handle 25 is again brought down to the flat plate portion 23 side of the cover 18 and both hands H are attached to the cover 18 from the cover 18 and the thumbs of both hands H are drawn in this state. As shown in FIG. 9, an operation knob 31 provided on the base end side of the locking plate 27 is pressed, and this is pressed against the supporting projection 33 protruding from the flat plate portion 23 to the gap 32 using the bridging portion 28.
And the locking hook 30 of the locking plate 27 is pulled away from the locking recess 36 provided on the inner peripheral edge of the opening end of the filter cylinder 16 as shown by the two-dot chain line in FIG.

As a result, the cover 18 and the filter cylinder 16 are
Since the lock for preventing the rotation of the cover 18 is released, the filter 18 is supported by hand and the thumb is applied to the operation knob 31 while the cover 18 is directly moved in the direction of the arrow in FIG. Direction), and the boss portions 24 provided on the cover 18 are respectively moved from one end of the cutout hole 34 of the filter tube 16 to the other end (the right side in FIG. 4, that is, the direction away from the engagement groove 35). , The peripheral wall h of the cover 18
Is disengaged from the engaging groove 35 of the filter cylinder 16 and moves to a position corresponding to the notch 34 as shown in FIGS. Accordingly, the locking hooks 30 and the locking projections 26 that have locked the cover 18 with respect to the filter cylinder 16 are moved from the locking recesses 36 and the engagement grooves 35 on the filter cylinder 16 side, as shown in FIG. As a result of complete removal, cover 1
8 can be easily removed from the filter tube 16 as shown in FIG. 4 by lifting it upward at the position shown in FIG. That is, in the present invention, the operating knob 31 of the cover 18 is pressed toward the support protrusion 33 to pull out the locking hook 30 of the locking plate 27, and the cover 18 is turned by one operation in the counterclockwise direction in FIG. By moving it, it can be easily removed from the filter tube 16.

As described above, when the cover 18 is removed from the opening end g of the filter tube 16, the contaminated filter medium 17 in the filter tube 16 is taken out. Fill. Subsequently, when attaching the cover 18 to the filter tube 16, the cover 18 is attached in the reverse order of the removal. That is, when the cover 18 is attached, as shown in FIG.
4 is positioned at one end of a notch hole 34 cut out at the periphery of the opening end g of the filtration tube 16, and the locking step 22 of the cover 18 is fitted to the opening end g of the filtration tube 16, whereby the cover 1
8 is put on the filter tube 16 (see FIG. 6).

Next, as shown in FIG. 8, both hands H are attached from the cover 18 to the filter tube 16, and in this state, the thumbs are pressed against the support projections 33 of the flat plate portion 23 to put the cover 18 in FIG. The cover 1 rotates in the direction of the arrow (clockwise).
As shown in FIG. 7, the boss 24 of FIG. 8 is cut from one end of the cutout hole 34 cut out at the opening end g of the filter cylinder 16 to the other end shown in FIG. 35 (in a direction approaching to the cylinder 35), the engaging projection 26 formed on the peripheral wall h of the cover 18 engages with the engaging groove 35 of the filter cylinder 16, and the engaging hook 30 of the engaging plate 27 While sliding in the engagement groove 35, the locking plate 27 is moved in the counterclockwise direction in FIG. 6 while moving backward with the bridging portion 28 as a fulcrum, and as shown in FIG.
8 comes into contact with the end of the notch 34, as shown in FIG.
As shown in FIG.
The locking hooks 30 are engaged with the locking recesses 36 by utilizing the elastic force of the bridging portions 28. As a result, as shown in FIGS. 3 and 7, the locking projection 26 is engaged with the engaging groove 35 and the locking hook 30 is locked in the locking recess 36 as shown in FIGS. 16 can be quickly and reliably attached without falling off. That is, the cover 18 can be attached to the filter tube 16 in one operation by rotating clockwise after covering the open end g of the filter tube 16 in the same manner as when removing the cover.

As described above, the cover 18 is attached to the filter cylinder 1.
After being attached to 6, the handle 25 is raised, the handle 25 is gripped, the filter tube 16 is lifted and stored in the filter container 8a.
Thereafter, the lid 15 is placed over the opening end of the filtration container 8a, and a tightening band 20 is wound around the outer peripheral edge 15a of the lid 15 and the flange 19 of the filtration container 8a. The cover 15 is attached to the filter container 8a by manual operation to tighten the cover, and the work of replacing the filter medium 17 is completed. As described above, in the present invention, when the filter medium 17 in the filter tube 16 is removed or filled, the cover 18 covered by the filter tube 16 operates the locking hook 30 of the locking plate 27 by the operation knob 31. By releasing the lock state and turning in the counterclockwise direction to unlock the filter tube 16, or by turning clockwise in the opposite direction, the filter tube 16 can be automatically locked. The cover 18 can be attached to and detached from the filter tube 16 by a single operation of covering the cover 18 with the filter tube 16 and rotating the cover 18 in a predetermined direction without using a special fixing member. Because it can be attached to or removed from the filter tube 16,
The replacement and filling operation of the filter medium 17 can be performed quickly and easily by a housewife at home without relying on a specialized trader.

[0024]

According to the present invention, when the cover is attached to the filter tube filled with the filter material or when the cover is removed from the filter tube to replace the filter material, the lock provided on the peripheral wall side of the cover is used . The projection and the manually operable locking hook are engaged with the engaging groove and the locking recess provided on the filter tube side by covering the opening end of the filter tube with the cover and rotating the cover in a predetermined direction. since is formed so disengaged, the cover it is possible to or remove attached to the filtration tube, Installing at one-touch operation, it is possible to perform the replacement or the like of the filtering material quickly and easily.

The present invention is a locking projection formed on the cover side
By engaging the engaging groove formed on the filter tube side, the cover is reliably prevented from coming off from the filter tube, and
A locking hook provided on the serial cover side is reliably prevented <br/> cover is engaged with the engaging recess from being rotated, the said locking projection is disengaged from the engaging groove of the filtration tube Even if the filter tube is lifted by using the handle attached to the cover, the cover can be filtered due to the presence of the double locking means including the locking projections and the locking hooks. Runode can be deposited so as not to fall off from the cylinder, it can be performed well carrying the filtration tube. In addition, the cover does not use a tightening screw for the filter tube as in the related art, or the cover itself is not directly screwed to the filter tube. As a result, the cover mounting apparatus of the present invention can be quickly and easily and reliably mounted and removed by a one-touch operation in combination with the simplification of the configuration, which is convenient. It is.

According to the present invention, a locking hook for blocking the rotation of the cover covered by the filter tube is formed so as to be able to advance and retreat toward the opening end peripheral side of the filter tube while leaving a part of the cover plate flat. projecting from the stop plate, also locking projections to prevent falling off of the cover and the filtering tube is a locking means in circumferentially fixed length in the peripheral wall of the cover consisting of the locking hook and the locking protrusion since so as to constitute <br/>, since means for preventing retaining and pivoting of the cover is directly provided to all cover itself, it can be manufactured economically the locking means of the cover with a simple structure Of course,
Locking hooks must be operated manually unless the control knob on the locking plate is manually operated.
And it cannot be disengaged from the engagement recess.
The cover oscillates due to the pressure of the bath water flowing into the cylinder, etc.
It does not come off the cylinder at all, and
To release the engagement of the
Easy removal of the cover by retreating
It can be done and is convenient.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a bath water circulation device including a bath water filtration device in which a cover mounting device of the present invention is implemented.

FIG. 2 is a longitudinal sectional view of a bath water filtration device provided with the cover mounting device of the present invention.

FIG. 3 is an enlarged sectional view of a main part of the cover attaching device.

FIG. 4 is an exploded perspective view showing an essential part of the cover attaching device in which a cover and a filter tube are disassembled.

FIG. 5 is a plan view of a cover.

FIG. 6 is a cross-sectional view of a main part showing a state before the cover is locked to the filter tube.

FIG. 7 is a cross-sectional view of a main part showing a state where the cover is locked to the filter tube.

FIG. 8 is an explanatory view of a state in which a cover covered by the filter tube is locked to the filter tube.

FIG. 9 is an explanatory view showing a state in which the cover is unlocked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath tub 2 Bath water circulating device 8a Filtration container 16 Filtration tube 18 Cover 22 Locking step 26 Locking projection 27 Locking plate 29 Side hole 30 Locking hook 34 Notch hole 35 Engagement groove 36 Locking recess X Locking means g Open end h Surrounding wall i Flange

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI B01D 35/02 J (72) Inventor Tatsuo Sugimoto 1-Aichi-cho, Kasugai-shi, Aichi Aichi Electric Co., Ltd. (72) Inventor Yasuda Hirohito 1 in Aichi-cho, Kasugai-shi, Aichi Prefecture Aichi Electric Co., Ltd. (72) Inventor Hidekazu Mori 1 in Aichi-cho, Kasugai-shi, Aichi Pref. JP, U) Japanese Utility Model Showa 63-52757 (JP, U) Japanese Utility Model Showa 59-186247 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24H 9/00 A47K 3/00 B01D 24/00 B01D 35/027 B65D 41/34

Claims (3)

(57) [Claims] 1. A bath water filtration device which recirculates and purifies bath water in a bath tub in a reusable manner. An engagement groove and an engagement recess are provided on the inner peripheral edge of the end, and an engagement protrusion is provided at a position corresponding to the engagement groove on the peripheral wall of the cover covered by the opening end of the filter tube. At the positions corresponding to the recesses, there are provided locking means each provided with a locking plate which advances and retreats to the locking recess side, and the cover is detachably attached to the opening end of the filter tube by the locking means. A cover mounting device for a filtration tube in a bath water filtration device. 2. The cover has a flat portion adjacent to a peripheral wall.
A locking plate projecting from the lateral hole of the peripheral wall to protrude and retract from the lateral hole of the peripheral wall and removably locking the locking concave portion is provided at a tip thereof, leaving a bridging portion between the locking plate and the flat plate portion. 2. A device for attaching a cover of a filter tube in a bath water filtration device according to claim 1, wherein the device is formed by punching so as to be able to advance and retreat. 3. The locking plate projects from a flat plate portion of a cover.
Operation knob for manually operating the locking plate in opposition to the
3. The method according to claim 2, wherein
A cover mounting device for a filter tube in a bath water filtration device.