JP7129815B2 - Toilet bowl cleaning tank and toilet bowl device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a toilet bowl cleaning tank and a toilet bowl device, and more particularly, to a thin toilet bowl cleaning tank in which the depth dimension of the tank body is reduced while ensuring a sufficient amount of flushing water, and a toilet bowl device having the same.

2. Description of the Related Art Conventionally, there is known a toilet bowl cleaning tank that has a tank body that stores flush water and a lid portion that covers an upper opening of the tank body (see, for example, Patent Document 1).

JP 2017-115451 A

2. Description of the Related Art In recent years, there has been a demand for a reduction in the protruding dimension of a toilet bowl device. When such a toilet device is configured by a toilet device in which a toilet bowl cleaning tank is fixed to a toilet bowl, it is necessary to reduce the thickness of the toilet bowl cleaning tank in order to reduce the forward dimension of the toilet bowl.

In general, since the tank body of the toilet bowl cleaning tank is a resin molded product by injection molding, it has a draft angle of about 2 to 3 degrees that gradually widens from the bottom to the top. Therefore, when trying to make the tank body thinner, the depth dimension of the lower part of the tank body becomes smaller than the depth dimension of the upper part due to the draft angle, and the tank volume is reduced by that amount. It becomes difficult to secure the amount of washing water.

On the other hand, blow molding is known as a molding method for resin molded products. Blow molding does not require a vertical draft unlike injection molding, and the side walls of the tank body can be formed perpendicular to the floor surface. It is easy to secure the necessary amount of washing water.

However, when the tank body is blow-molded, there is a new problem that the tank body is easily deformed. This is because the upper opening provided in the tank body for assembly, maintenance, etc. is formed by cutting the upper part of the blow-molded product in a substantially horizontal direction. This is because it shrinks to If the tank main body is deformed, it may interfere with internal parts or create a gap between it and the inner lid provided at the top opening, which may cause water leakage.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a toilet flushing tank and a toilet apparatus that can secure a required amount of flushing water even if the tank body is thinned and that can reliably suppress deformation of the tank body.

(1) A toilet bowl cleaning tank according to the present invention includes a tank body (for example, a tank body 41 to be described later) that stores flush water, and an interior that covers an upper surface opening of the tank body (for example, an upper surface opening 411 to be described later). and a lid (for example, an inner lid 42 to be described later) and a toilet bowl cleaning tank (for example, a toilet bowl cleaning tank 4 to be described later), wherein the tank body is made of a blow-molded product, and the inner lid is the tank body. It is attached to the top opening by being screwed into a screw hole (for example, a screw hole 451 to be described later) provided in the upper surface opening.

(2) In the toilet bowl cleaning tank described in (1), an insert member having the threaded hole (for example, an insert member 45 described later) is provided integrally with the tank body, and the top opening and the threaded hole are , and preferably open at a cut surface cut through the middle of the length direction of the insert member.

(3) In the toilet bowl cleaning tank described in (1) or (2), the inner lid is fitted inside the top opening and is fitted to the inner peripheral surface of the top opening (for example, the inner peripheral surface described later). 411a) (eg, rib 427 described below).

(4) In the toilet bowl cleaning tank according to any one of (1) to (3), it is preferable that the top opening has an opening width of two-thirds or more of the overall width of the tank body.

(5) In the toilet bowl cleaning tank according to any one of (1) to (4), the inner lid includes an inner lid body (for example, an inner lid body 421 to be described later) attached to the upper opening, and an inspection lid (eg, an inspection lid 422 described below) that removably engages the lid body.

(6) The toilet device according to the present invention comprises a toilet body (for example, a toilet body 21 to be described later) and a toilet cleaning device according to any one of (1) to (5), in which flushing water to be supplied to the toilet body is stored. and a tank (for example, a toilet bowl cleaning tank 4 described later).

Advantageous Effects of Invention According to the present invention, it is possible to provide a toilet bowl cleaning tank and a toilet bowl device that can secure a necessary amount of flushing water even if the tank body is thinned and that can reliably suppress deformation of the tank body.

1 is a perspective view of a toilet device having a toilet cleaning tank according to the present invention; FIG. FIG. 2 is a partial plan view of the toilet device showing the inside of the toilet cleaning tank according to the present invention; 1 is an exploded perspective view showing a tank body and an inner lid of a toilet bowl cleaning tank according to the present invention; FIG. Fig. 2 is a cross-sectional view showing an enlarged main part of the toilet bowl cleaning tank according to the present invention; Fig. 2 is a side view of the tank body of the toilet bowl cleaning tank according to the present invention; FIG. 4 is a plan view of the inner lid of the toilet bowl cleaning tank according to the present invention; FIG. 4 is a plan view showing the top opening of the tank body of the toilet bowl cleaning tank according to the present invention; FIG. 4 is a perspective view of an insert member; FIG. 3 is a perspective view showing a main part of a blow-molded product of a tank body; It is a top view which expands and shows the inspection opening of an inner cover. FIG. 4 is a perspective view showing a state in which a lift arm is engaged with an inspection opening of an inner lid;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the toilet device 1 shown in this embodiment is a floor-standing type toilet device in which the toilet bowl 2 is installed on the floor f1. A toilet bowl device 1 includes a toilet bowl 2 and a toilet bowl cleaning device 3 arranged behind the toilet bowl 2 . In the following description, the front-rear direction when viewed from the user seated on the toilet bowl 2 is defined as the front-rear direction. Moreover, let the left-right direction at the time of seeing from the user who sat down on the toilet bowl 2 be a width direction. Further, the up-down direction along the vertical direction with respect to the floor f1 is defined as the up-down direction.

The toilet bowl 2 is installed on the floor surface f1 close to the vertical wall surface f2. The toilet bowl 2 has a toilet seat 22 and a toilet lid 23 rotatably attached to the upper part of the toilet bowl body 21, and a toilet seat device functional part 24 arranged behind the toilet seat 22 and the toilet lid 23. there is Side covers 211 are detachably attached to both side surfaces of the rear portion of the toilet body 21 by hook-and-loop fasteners or the like to shield the rear portion of the toilet body 21 .

The toilet bowl cleaning device 3 is arranged behind the toilet body 21 . The toilet bowl cleaning device 3 has a toilet bowl cleaning tank 4 and a tank cover 5 which is an exterior body of the toilet bowl cleaning tank. The toilet bowl cleaning tank 4 includes a tank body 41, an inner lid 42, and a base plate 43, as shown in FIG. An anti-condensation material (not shown) is provided on the outer peripheral surface of the tank body 41 .

The tank main body 41 is made of a blow-molded resin molded product. The top of the tank body 41 has a top opening 411 that opens in a substantially rectangular shape. The upper opening 411 is narrower than the overall width of the tank body 41 . The details of the tank body 41, which is a blow-molded product, will be described later.

Inside the tank body 41, flush water is stored, and as shown in FIG. 2, internal parts for flushing the toilet bowl are accommodated. Specifically, the tank main body 41 contains a ball tap 4a for supplying water, a float 4b for stopping the ball tap 4a, and an overflow for limiting the water level of flush water and supplying makeup water to the toilet bowl main body 21. A pipe 4c, a flapper valve 4d for opening and closing a drain port, a ball chain 4e for lifting the flapper valve 4d, a lifting arm 4f for lifting the ball chain 4e, and the like are accommodated. A spindle 4h of a lever handle 4g attached to the outside of the tank cover 5 is connected to the lifting arm 4f.

The inner lid 42 covers the top opening 411 of the tank body 41 . The inner lid 42 shown in the present embodiment includes a resin inner lid main body 421 mounted over the entire top opening 411 and a resin inspection lid detachably engaged with the inner lid main body 421. 422. The inner lid 42 is attached by screwing the inner lid main body 421 to the screw hole 451 provided in the upper opening 411 of the tank main body 41 with a plurality of mounting screws 42a.

The inspection lid 422 is not screwed to the inner lid main body 421 and detachably covers a substantially rectangular inspection opening 423 formed in a part of the inner lid main body 421 . The inspection opening 423 forms a substantially rectangular opening with an area of about 1/2 of the entire inner lid 42 . As shown in FIG. 6, the inner lid main body 421 is provided with engaging claws 424 that slightly protrude inward from the edge portions facing the inspection opening 423 . On the other hand, a slit 425 is provided in a peripheral portion of the inspection lid 422 at a portion corresponding to the locking claw 424 .

The slit 425 forms a narrow easily deformable portion 426 that is easily elastically deformable in the peripheral portion of the inspection cover 422 . The inspection lid 422 is easily attached to and detached from the inner lid body 421 by overcoming the locking claws 424 while being elastically deformed as shown by the dashed lines in FIG. are in agreement. Therefore, when accessing the inside of the tank main body 41 for maintenance, it is not necessary to remove the screwed inner lid main body 421, and it is possible to easily access from the inspection opening 423 only by removing the inspection lid 422, which facilitates maintenance. workability is improved.

The base plate 43 is attached to the bottom of the tank body 41 . The base plate 43 shown in this embodiment is made of a resin harder than the tank body 41 and has a planar shape substantially equal to the bottom surface shape of the tank body 41 . The base plate 43 supports the lower surface of the tank body 41 and is fixed to the upper surface of the rear portion of the toilet body 21 by a pair of tightening bolts 431 (see FIGS. 3 and 5) projecting from the bottom of the base plate 43. It has a function of fixing the tank body 41 to the toilet bowl body 21 .

Specifically, as shown in FIG. 4 , a circular lower surface opening 413 is provided in the central portion of the bottom surface 412 of the tank body 41 . A substantially cylindrical valve seat 44 is attached to the lower surface opening 413 . The valve seat 44 is a component that constitutes the valve seat of the flapper valve 4 d (not shown in FIG. 4 ), and has a flange portion 441 with a larger diameter than the bottom opening 413 . The valve seat 44 is mounted from the inside of the tank body 41 with a packing 44 a interposed between the flange portion 441 and the tank body 41 .

The valve seat 44 integrally has a cylindrical portion 442 having a male thread on the outer peripheral surface below the flange portion 441 , and the cylindrical portion 442 protrudes downward from the lower surface opening 413 . The valve seat 44 is attached to the tank main body 41 by screwing a tightening nut 44 b from the outside of the tank main body 41 onto a cylindrical portion 442 protruding from the lower surface opening 413 .

On the other hand, a circular opening 432 is provided in the central portion of the base plate 43 , and the cylindrical portion 442 of the valve seat 44 protruding from the bottom surface of the tank body 41 is inserted through this opening 432 . The base plate 43 is clamped between the tightening nut 44c and the tank body 41 by screwing the tightening nut 44c into the cylindrical portion 442 protruding downward from the opening 432 . Thereby, the base plate 43 is fixed to the lower portion of the tank body 41 .

The base plate 43 fixed to the tank main body 41 is fixed by inserting a pair of tightening bolts 431 projecting from the lower surface into tank mounting holes (not shown) provided on the upper surface of the toilet main body 21 . Thereby, the tank main body 41 is fixed to the toilet main body 21 via the base plate 43 . A cylindrical portion 442 of the tank body 41 fixed to the toilet body 21 communicates with a flush water inlet (not shown) of the toilet body 21 so that the flush water in the tank body 41 can be supplied to the toilet body 21 .

As shown in FIG. 1, the tank cover 5 shown in this embodiment includes a front cover 51 arranged in the front part of the toilet bowl cleaning tank 4 to cover the front of the tank main body 41, and a front cover 51 extending from the rear to the side of the toilet bowl cleaning tank 4. It has a rear cover 52 arranged to cover the sides and rear of the tank main body 41 and an upper cover 53 arranged on the upper part of the toilet bowl cleaning tank 4 to cover the upper part of the tank main body 41 . The front cover 51 and the upper cover 53 are detachably attached to the rear cover 52 . As a result, the entire tank body 41 is shielded by the tank cover 5, which improves the appearance and design.

A lower cover 54 covers the lower portion of the toilet bowl cleaning tank 4 and the rear portion of the toilet bowl 2 . As a result, the piping parts (not shown) disposed behind the toilet bowl 2 are hidden, and the rear side of the toilet bowl 2 is unified into a thin, substantially rectangular parallelepiped shape extending downward from the toilet bowl cleaning device 3. further improved.

Here, the tank main body 41 of the toilet cleaning tank 4 will be further described.
A tank body 41 of the toilet bowl cleaning tank 4 is made of a blow-molded product. Since the tank body 41 made of a blow-molded product does not need to have a vertical draft angle for mold release unlike an injection-molded product, as shown in FIG. A side wall surface extending perpendicularly to the floor surface f1 can be configured. For this reason, the tank body 41 does not experience a decrease in tank volume due to the vertical draft angle, and even if it is made thinner in the depth direction (front-rear direction), it is easier to obtain the desired amount of washing water than an injection-molded product. It is possible to secure

As shown in FIGS. 3 and 7 , a plurality of (four in this embodiment) insert members 45 are provided integrally with the tank body 41 in the top opening 411 of the tank body 41 . The screw hole 451 is formed along the length direction (vertical direction) of the insert member 45 and is exposed flush with the upper end surface of the tank main body 41 (opening surface of the upper surface opening 411). The insert member 45 is arranged to protrude inward in the upper opening 411 and does not protrude outward beyond the tank body 41 . Therefore, the insert member 45 does not interfere with bringing the tank body 41 as close to the tank cover 5 as possible.

Here, a method for manufacturing the tank body 41 having the insert member 45 will be described.
The insert member 45 is preliminarily mounted in a mold (not shown) for blow molding, so that it is molded integrally with the tank body 41 during blow molding.

FIG. 8 shows an example of the insert member 45 mounted on the molding die. The insert member 45 is made of a substantially semi-cylindrical resin member, and has a screw hole 451 formed along the length direction (vertical direction in FIG. 8). A plurality of grooves 452 along the circumferential direction are formed on the semi-circular peripheral surface on one end side (lower end side in FIG. 8) of the insert member 45 in the length direction. The groove portion 452 increases the contact area with the resin during blow molding, and prevents the insert member 45 from slipping out of the tank body 41 after molding.

A protruding portion 453 is integrally provided on the side opposite to the semi-circular surface (flat surface side) on the other end side in the length direction of the insert member 45 (upper end side in FIG. 8). The protrusion 453 fits into a recess provided at a predetermined portion of the inner surface of the mold to position and hold the insert member 45 at a predetermined position within the mold.

After the protrusion 453 of the insert member 45 is fitted into the recess in the mold and the insert member 45 is held, resin is injected into the mold, thereby forming a half of the tank body 41 as shown in FIG. A molded article 41A, which is a product, is blow-molded. The mold is split in the front-rear direction (the depth direction of the tank body 41) as indicated by the arrows in FIG. Therefore, the molded product 41A does not have a vertical draft angle.

A molded product 41A immediately after blow molding has a hollow box shape in which the entirety is substantially closed, and does not have an upper opening. At the time of blow molding, the resin adheres to the insert member 45 along the surface (semicircular surface) oriented toward the inside of the mold (see FIG. 7). As a result, the insert member 45 is integrated with the molded product 41A so as to be embedded from the outside along the portion that will become the top opening 411 later.

Next, the top opening 411 is formed by cutting the upper portion of the molded product 41A in a substantially horizontal direction. Specifically, as shown in FIGS. 8 and 9, the molded product 41A is cut along a cutting line CL that passes through the middle of the insert member 45 in the longitudinal direction. As a result, the top opening 411 and the screw hole 451 of the insert member 45 are opened in the cut surface. Since the cutting line CL is positioned below the protrusion 453 of the insert member 45, the protrusion 453 of the insert member 45 does not remain in the tank body 41 obtained after cutting.

Further, as shown in FIG. 7, the molded product 41A has a bottom opening 413, a notch 414 for inserting the spindle 4h extending from the lever handle 4g, an insertion hole 415 for a water supply hose (not shown), and the like. It is formed. Thereby, the tank body 41 integrally having the insert member 45 is manufactured.

An inner lid body 421 of the inner lid 42 is screwed to the top opening 411 of the tank body 41 . By screwing the inner lid main body 421 to the upper opening 411, deformation of the upper opening 411 is prevented. Therefore, even if the tank body 41 is a blow-molded product, deformation of the tank body 41 is reliably suppressed.

The tank body 41 does not need to have a rib or the like for suppressing deformation along the top opening 411 . Further, as described above, when accessing the inside of the tank main body 41 , it is possible to easily access through the inspection opening 423 by removing only the inspection cover 422 . Even if the inspection lid 422 is removed, the inner lid main body 421 remains screwed, so the tank main body 41 is not deformed. Therefore, in the toilet device 1 having the tank body 41, the tank body 41 can be thinned while securing a desired amount of flushing water. , the deformation of the tank body 41 itself can also be suppressed.

In general, deformation of the tank body 41 is more likely to occur as the opening width of the upper surface opening 411 increases. In particular, the thinner the tank body 41 and the wider the opening width of the top opening 411 , the easier it is to deform the tank body 41 . However, since deformation of the tank body 41 shown in this embodiment can be reliably suppressed by the screwed inner lid 42, the opening width of the upper surface opening 411 can be increased. Specifically, the upper opening 411 can have an opening width of two-thirds or more of the overall width of the tank body 41 . As a result, even if the thickness of the tank body 41 is reduced, it is possible to easily access the inside of the tank body 41 without causing deformation of the tank body 41 .

The inner lid body 421 screwed to the top opening 411 of the tank body 41 has ribs 427 protruding toward the tank body 41 on the rear side (the side facing the tank body 41), as shown in FIG. integrally has The rib 427 is formed along the inner peripheral surface 411 a of the upper opening 411 of the tank body 41 . By attaching the inner lid body 421 to the top opening 411, the ribs 427 fit inside the top opening 411 and support the inner peripheral surface 411a of the top opening 411 from the inside. Therefore, the top opening 411 is held in a constant shape by the ribs 427 . Since the top opening 411 is held in a fixed shape, the formation of a gap between the inner lid 42 and the top opening 411 is prevented, thereby reducing the risk of water leakage. In addition, since the ribs 427 serve as guides when the inner lid main body 421 is attached to the upper opening 411, the inner lid main body 421 can be easily attached.

As shown in FIG. 10, the inner lid main body 421 is formed with an engagement groove 428 for mounting parts at one corner of the inspection opening 423 . As shown in FIG. 11, the engaging groove 428 allows the lifting arm 4f, which is one of the internal parts of the tank body 41, to be engaged and temporarily fixed.

That is, the ball chain 4e is attached in advance to the lifting arm 4f. When the toilet bowl cleaning tank 4 is assembled, the spindle 4h of the lever handle 4g is inserted through the notch 414 of the tank body 41 from the outside, thereby connecting the lifting arm 4f and the spindle 4h inside the tank body 41. . Therefore, normally, the lifting arm 4f is placed in the tank body 41 without any support before it is connected to the spindle 4h. For this reason, conventionally, when attaching the lever handle 4g, it was necessary to reach into the bottom of the tank body 41 and take out the lifting arm 4f.

On the other hand, according to the inner lid main body 421 shown in this embodiment, the lifting arm 4f can be temporarily fixed in the engaging groove 428, so that when the lever handle 4g is attached, the inside of the tank main body 41 can be It is possible to easily take out the lifting arm 4f without having to insert a hand deeply, and the assembling workability is excellent. Moreover, it is possible to prevent the lifting arm 4f from interfering with other internal parts during transportation or the like before attaching the lever handle 4g. Therefore, it is possible to suppress the occurrence of breakage of the internal parts, etc., and improve the quality of the toilet bowl cleaning tank 4 .

In the embodiment described above, the screw hole 451 for screwing the inner lid 42 is exposed flush with the upper opening 411 of the tank body 41 by the insert member 45. It does not have to be flush with the top opening 411 . For example, a separate member having a screw hole may be retrofitted inside the top opening 411 by adhesion or the like.

In addition, in the embodiment described above, the inner lid 42 is configured to cover the entire surface of the upper opening 411 of the tank body 41 , but the inner lid 42 does not necessarily cover the entire surface of the upper opening 411 of the tank body 41 . It does not have to be covered.

Furthermore, in the above embodiment, the floor-standing type toilet device 1 in which the toilet bowl 2 is installed on the floor f1 was exemplified. A device (not shown) is equally applicable. In the wall-mounted type toilet device, the toilet bowl cleaning tank is installed on the back side of the vertical wall surface.

4 toilet cleaning tank 41 tank main body 411 upper opening 411a inner peripheral surface 42 inner lid 45 insert member 451 screw hole

Claims (5)

A toilet flushing tank having a tank body for storing flushing water and an inner lid covering an upper opening of the tank body,
The tank body is made of a blow-molded product,
The inner lid has an inner lid body that covers the entire top opening, and an inspection lid that covers an inspection opening formed in the inner lid body,
The inner lid main body has a rib that fits inside the upper opening and supports the inner peripheral surface of the upper opening, and is screwed to a screw hole provided in the tank main body. attached to the top opening by
The rib is formed integrally with the inner lid body along the inner peripheral surface of the top opening over a region in the inner lid body where the inspection port is not formed and a region where the inspection port is formed. Done , toilet bowl flushing tank. an insert member having the threaded hole is provided integrally with the tank body,
2. The toilet bowl cleaning tank according to claim 1, wherein said upper surface opening and said threaded hole are opened in a cut surface cut through a lengthwise intermediate portion of said insert member. 3. The toilet bowl cleaning tank according to claim 1, wherein said top opening has an opening width of 2/3 or more of the overall width of said tank body. The toilet device according to any one of claims 1 to 3, wherein the inspection lid detachably covers the inspection opening. A toilet device, comprising: a toilet bowl body; and the toilet bowl cleaning tank according to any one of claims 1 to 4, wherein flush water to be supplied to the toilet bowl body is stored.

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