JP2001214494A - Low tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low tank which makes its cost reduce by cutting the number of articles by halves and of parts. SOLUTION: This is a low tank 4 for storing a washing water. At the back of this tank, a port 5b for connecting a feed water pipe 11 to a part higher than the storage surface of washing water is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low tank for storing washing water.

[0002]

2. Description of the Related Art Conventionally, a low tank 51 capable of storing cleaning water is constructed as shown in FIG.
In order to connect a water supply pipe to the ball tap 52 from outside, a water supply pipe hole 5
3 is opened, and a valve seat 54 is fixed to a bottom side of the low tank 51 by tightening a nut 55 from a lower side, and a float valve is mounted on the valve seat 54 so as to be movable up and down. 56 are provided, and
An overflow pipe 57 is provided upright from the valve metal fitting 54 in a rising manner. Conventionally, a dew condensation preventing material 58 for preventing dew condensation is attached to the inner periphery of the raw tank 51. As described above, conventionally, the structure is such that water is supplied from the side surface or the bottom surface side of the low tank 51. In order to connect a water supply pipe corresponding to a site, there is a problem that two types of left and right product numbers must be prepared. there were. In addition, it is necessary to provide an overflow pipe 57 for discharging overflow water inside, and the number of parts is increased, and there is a problem that replacement of the valve seat 54 is difficult and maintenance is poor. In addition, there is a problem that the cost increases because the dew condensation preventing material 58 is attached.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and can reduce the number of parts, the number of parts, and the cost. The first gist of the present invention is to provide a low tank for improving the maintainability, and a first gist of the low tank is to store washing water, and a water supply pipe is provided on a back surface of the low tank above the washing water collecting surface. The connecting hole is open. The second gist is that the hole is opened at the center in the left-right direction on the back surface of the raw tank. The third point is that on the back of the raw tank,
A recess for receiving the water supply pipe is formed, and the hole is opened in the recess. The fourth gist is a low tank having a double structure including an inner tank and an outer tank,
The bottom surface of the outer tank is formed with a hole through which water existing between the inner tank and the outer tank can be drained to the toilet. A fifth point is that the hole is formed in a nut member that is fastened to the bottom of the outer tank. A sixth gist is that the nut member is for fixing the inner tank. A seventh aspect is that a float valve seat provided on a bottom surface in a low tank and opened and closed by a float valve is configured to be detachable and replaceable by inserting a hand from the upper surface side of the low tank. Also,
An eighth gist is that the float valve seat has a structure that can be inserted and fixed in a resin tank. A ninth aspect is that an air layer is formed between the outer periphery of the inner tank and the inner periphery of the outer tank to such an extent that dew condensation does not occur.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a toilet body in which a low tank is installed. A rim 3 is formed on the upper surface side of the toilet body 1, and a pot surface 2 is formed below the rim 3. , A low tank 4 is installed in an upright state, and an enlarged side sectional view of the low tank 4 is shown in FIG.
FIG. 3 shows an enlarged front internal configuration diagram, FIG. 4 shows a rear view of the raw tank, and FIG. 5 shows a plan view of the raw tank. The raw tank 4 of this example is an outer tank 5 made of earthenware. An inner tank 6 made of a resin is formed inside of the outer tank 5 to form a double tank structure, and a lid 7 is detachably mounted on the upper surface of the outer tank 5. A hand-washing pot 7a is formed on the lid 7, and a water-discharge pipe 8 capable of spouting water is provided upright in the hand-washing pot 7a. A ball tap 9 is provided at an upper portion in the outer tank 5 in communication with the water discharge pipe 8, and a water supply pipe 11 is connected from the back side of the outer tank 5 to supply water to the ball tap 9. It has become something.

As shown in the rear view of FIG. 4, the water supply pipe 11 is buried in a recess 5a formed in the vertical direction on the back surface of the outer tank 5 so as to be embedded therein. The upper end of the hole 5 is formed with a hole 5
b, it is connected to the ball tap 9. The hole 5 b is opened at the center of the rear surface of the outer tank 5 in the left-right direction, above the level of the washing water stored in the inner tank 6. Therefore, in this example, the water supply pipe 11 is buried in the recess 5a so that the water supply pipe 11 is well concealed, and the rear side of the outer tank 5 is substantially in contact with the wall surface of the toilet. It can be installed, and the water supply pipe 11 is completely concealed from the front side, so that a neat installation state can be obtained. Further, since the hole 5b is opened at the center in the left-right direction on the back of the outer tank 5, the water supply pipe 11 can be piped from either the left or right side. Therefore, the low tank 4 can be formed with one kind of product number at a reduced cost.

A handle 12 which can be manually operated by a user is provided on a side surface of the outer tank 5, and a chain 13 is connected to a tip of a rod portion 12 a of the handle 12. A float valve 14 is connected to the lower end, and the float valve 14 is configured to move up and down with respect to the float valve seat 15 to open and close the float valve seat 15 and to drain flush water to the toilet body 1 side. The float valve seat 15 in the present embodiment is attached to the bottom of the inner tank 6 by being inserted from above into a bottom cylindrical portion 6a integrally formed and suspended, and the float valve seat 15 is The hand can be inserted and removed from above the low tank 4 by hand.

More specifically, FIG. 6 is an enlarged view of a portion of the float valve seat 15. The bottom portion of the inner tank 6 is integrally formed with a bottom tube portion 6 a in a downwardly downward manner. The portion 6a is inserted into a bottom hole 5c formed through the bottom surface of the outer tank 5, and the nut member 19 is tightened from the lower surface side of the outer tank 5 with respect to a screw formed on the outer periphery of the bottom cylindrical portion 6a. , The inner tank 6 can be fixed to the bottom surface of the outer tank 5 by a nut member 19.
The float valve seat 15 is attached from the upper surface side of the float valve 15 in a watertight manner with an O-ring 16 interposed therebetween.
5 is an enlarged perspective view in FIG.
An inclined bowl-shaped valve seat portion 15a with which the float valve 14 abuts is formed. A locking flange portion 15b is integrally formed below the valve seat portion 15a so as to protrude toward the outer peripheral side, and is further formed in a cylindrical shape toward the lower side. Are formed integrally with each other, and a hook-shaped locking hook hole 15d having a vertical groove 15e is formed in the insertion tube portion 15c. The O-ring 16 is inserted into the cylindrical portion 6a in a watertight manner, and the locking flange portion 15b is brought into contact with the upper end of the bottom cylindrical portion 6a. 15e, and by turning the float valve seat 15 in that state, the projections and the like
The float valve seat 15 is attached in such a manner that the float valve seat 15 is fitted into the inside and is prevented from being pulled out. During maintenance, the float valve seat 15 can be removed by rotating in the opposite direction. If you want to change the amount of washing water that flows to the body 1,
5 so that the replacement operation can be performed very easily by hand from above.

As shown in FIG. 6, a guide cylinder 6d is provided upright at the center of the bottom cylinder 6a, and a guide pin 14a suspended from the float valve 14 is provided in the guide cylinder 6d. Is inserted to guide the float valve 14 in a vertical direction. In addition, the bottom cylinder 6
a, a channel wall 6b extending leftward to form a channel;
Are integrally formed, and an insertion tube portion 6c is integrally formed on the upper surface side of the water channel wall 6b.
The replenishing water pipe 17 is connected to c from above in a plug-in manner. That is, a plurality of locking claw legs 17a, 17a, 17a are formed at a lower end portion of the supply water pipe 17, and these locking claw legs 17a, 17a, 17a are inserted into the insertion tube portion 6c, and the O-ring 18 is mounted thereon. It is configured so that it can be inserted and locked in a water-tight manner with the intervening state. Therefore, the makeup water pipe 17 is also attached so as to be inserted from the upper side and pulled out upward so that maintenance and the like can be easily performed.

In this embodiment, an air layer S of 15 mm or more is formed between the inner periphery of the outer tank 5 and the outer periphery of the inner tank 6, so that the air layer S insulates the air to prevent dew condensation. Thus, the conventional dew condensation preventing member 58 can be omitted. The lower end of the air layer S communicates with a bottom hole 5c of the outer tank 5, and the bottom hole 5c is formed to have a considerably larger diameter than the bottom cylinder 6a.
The inner tank 6 can be fixed by tightening a nut member 19 as shown in a perspective view opposite to FIG. 7 from the lower surface side, and the nut member 19 is an internal screw screwed to the bottom cylindrical portion 6a. 19a, and has an outer peripheral flange 19a on its outer peripheral side via ribs 19c, 19c formed at predetermined intervals.
b is formed integrally, and the outer peripheral flange 19 b is formed in the bottom hole 5.
The lower hole side of the outer peripheral flange 19b is vertically penetrated inside the outer peripheral flange 19b, and the drain holes H, H are communicated with the bottom hole 5c.

Therefore, in a state where the nut member 19 is fastened and fixed to the lower surface side of the bottom hole 5c, the air layer S and the toilet body 1 side communicate with each other via the bottom hole 5c and the drain hole H. Also, when the overflowing washing water flows from the inner tank 6, the washing water is well drained from the bottom hole 5c.
And it can flow into the rim 3 of the toilet body 1 through the drain hole H and drain to the pot surface 2. Condensed water is generated on the outer periphery of the inner tank 6, and the condensed water forms an air layer S.
Even when the water flows down, the dew condensation water can be satisfactorily drained to the toilet body 1 through the bottom hole 5c and the drain hole H.

As described above, the air layer S not only has the effect of preventing dew condensation but also overflow water or dew condensation water.
It can also serve as a water channel for discharging to the side, and the overflow pipe 57 as in the related art can be omitted, so that the number of parts can be reduced and the cost can be reduced.

[0012]

According to the present invention, there is provided a low tank for storing washing water, wherein a hole for connecting a water supply pipe is opened on the back surface of the low tank above the level of the washing water. By connecting the water supply pipe to the back side, the water supply pipe can be concealed favorably, and the appearance of the installed state of the low tank is improved.

Further, since the hole is opened at the center in the left-right direction on the back of the raw tank, the water supply pipe can be connected from either the left or right side, so that there is no need to prepare two types of left and right part numbers. Therefore, it is possible to reduce the cost by halving the product number.

Further, a concave portion for receiving a water supply pipe is formed on the back surface of the low tank, and the hole is opened in the concave portion. The rear surface of the low tank can be placed almost in contact with the wall surface of the toilet in a clean state.

A low tank having a double structure comprising an inner tank and an outer tank, wherein a hole through which water existing between the inner tank and the outer tank is drained to the toilet is formed on a bottom surface of the outer tank. This eliminates the need for the conventional overflow pipe, reduces the number of parts and reduces costs, and allows not only overflow water but also dew condensation water to be drained well to the toilet. Become.

Further, since the hole is formed in the nut member which is fastened to the bottom of the outer tank, the overflow water or the like can be desirably drained to the toilet through the hole of the nut member.

Further, since the nut member is for fixing the inner tank, the inner member can be satisfactorily fixed by tightening the nut member. Drainage becomes possible.

Also, provided on the bottom surface in the low tank,
The float valve seat that is opened and closed by the float valve is configured to be detachable and replaceable by inserting a hand from the top side of the low tank, so that the float valve seat can be easily removed at the time of maintenance, etc. If necessary, the float valve seat can be replaced, so that the maintainability and the like are extremely improved.

Further, since the float valve seat has a structure that can be inserted and fixed in a resin tank, the float valve seat can be attached and detached with one touch, so that maintenance work and replacement work can be easily performed in a short time. Can be done.

Further, since an air layer is formed between the outer circumference of the inner tank and the inner circumference of the outer tank to the extent that dew condensation does not occur, it is necessary to attach a conventional dew-prevention material. Therefore, it is possible to prevent the occurrence of dew condensation by satisfactorily insulated with air, and to reduce the cost.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a toilet body in which a low tank is installed.

FIG. 2 is an enlarged side sectional configuration diagram of a low tank.

FIG. 3 is a front configuration diagram of FIG. 2;

FIG. 4 is a rear view of FIG. 2;

FIG. 5 is a plan view of FIG. 3;

FIG. 6 is an enlarged cross-sectional configuration diagram of a portion of a float valve seat.

FIG. 7 is a perspective configuration diagram in which a nut member is reversed.

FIG. 8 is a perspective view of a float valve seat.

FIG. 9 is a cross-sectional configuration diagram of a conventional low tank.

[Explanation of symbols]

 Reference Signs List 1 toilet body 2 pot surface 3 rim 4 low tank 5 outer tank 5a recess 5b hole 5c bottom hole 6 inner tank 6a bottom cylinder 6b water channel wall 6c insertion cylinder 6d guide cylinder 7 lid 8 water discharge pipe 9 ball tap 11 water supply pipe 12 Handle 14 Float valve 15 Float valve seat 15a Valve seat 15b Locking flange 15c Plug-in tube 15d Locking hook hole 16 O-ring 17 Supply water pipe 17a Locking claw leg 19 Nut member 19a Internal screw 19b Outer flange 19c Rib H Drainage hole S Air layer

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Junji Yoshida 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Kunio Sato 5-1-1 Koiehonmachi, Tokoname-city, Aichi Prefecture Inax Corporation (72) Inventor Hirofumi Yano 5-1-1 Koie Honcho, Tokoname, Aichi Prefecture Inax Corporation (72) Inventor Jun Junoda 5-1-1 Koie Honcho, Tokoname City, Aichi Prefecture Inax Corporation (72) Inventor Naoki Okada 5-1-1 Koiehonmachi, Tokoname-shi, Aichi F-term in Inax Corporation (reference) 2D039 BA02 CB01 DB03

Claims (9)

[Claims] 1. A low tank for storing washing water, wherein a hole for connecting a water supply pipe is opened above a surface of the washing water on a back surface of the low tank. 2. The raw tank according to claim 1, wherein the hole is opened at the center in the left-right direction on the back surface of the raw tank. 3. The low tank according to claim 1, wherein a concave portion for receiving a water supply pipe is formed on a back surface of the low tank, and the hole is opened in the concave portion. 4. A low tank having a double structure comprising an inner tank and an outer tank, wherein a hole through which water existing between the inner tank and the outer tank can be drained to the toilet is formed on a bottom surface of the outer tank. A low tank characterized by the following. 5. The low tank according to claim 4, wherein the hole is formed in a nut member which is fastened to a bottom of the outer tank. 6. The low tank according to claim 5, wherein the nut member is for fixing the inner tank. 7. A low tank, wherein a float valve seat provided on a bottom surface in the low tank and opened and closed by a float valve is configured to be detachable and replaceable by inserting a hand from the upper side of the low tank. 8. The float valve seat according to claim 7, wherein the float valve seat can be inserted and fixed in a resin tank.
The low tank described in 1. 9. The low tank according to claim 4, wherein an air layer is formed between the outer periphery of the inner tank and the inner periphery of the outer tank to such an extent that dew condensation does not occur.