JP2019190240A - Toilet bowl flush tank and toilet bowl device - Google Patents

Abstract

To provide a toilet bowl flush tank capable of securing a necessary washing water quantity even when a tank body is made thinner and capable of reliably suppressing deformation of tank body, and a toilet bowl device.SOLUTION: A toilet bowl flush tank 4 includes a tank body 41 for storing washing water, and an inner cover 42 for covering a top surface opening 411 of the tank body 41. The tank body 41 is made of a blow molding. The inner cover 42 is attached to the top surface opening 411 by being screwed to a screw hole 451 that is provided in the tank body 41.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a toilet flushing tank and a toilet device, and more particularly, to a thin toilet flushing tank in which a depth of a tank body is reduced while securing an amount of washing water, and a toilet device including the same.

  Conventionally, a toilet bowl cleaning tank having a tank main body that stores cleaning water and a lid that covers an upper surface opening of the tank main body is known (see, for example, Patent Document 1).

JP 2017-115451 A

  In recent years, in the toilet device, it is required to reduce the forward dimension of the toilet. When such a toilet device is constituted by a toilet device in which the toilet flushing tank is fixed to the toilet bowl, it is necessary to make the toilet flushing tank thin in order to reduce the forward dimension of the toilet bowl.

  Generally, since the tank body of the toilet bowl washing tank is a resin molded product by injection molding, it has a draft of about 2 to 3 ° that gradually spreads from below to above. For this reason, when attempting 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, and the tank volume is reduced accordingly. 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 like injection molding, and the side wall of the tank body can be formed perpendicular to the floor surface, so the tank volume is larger than that of injection molded products. 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 surface 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, so that the peripheral edge of the upper surface opening is on the inside This is because it shrinks. If the tank main body is deformed, it may interfere with internal components, or a gap may be formed between the inner lid provided in the upper surface opening and cause water leakage.

  An object of the present invention is to provide a toilet flushing tank and a toilet device capable of ensuring a necessary amount of washing water even when the tank body is thinned and capable of reliably suppressing deformation of the tank body.

  (1) A toilet flushing tank according to the present invention includes a tank main body (for example, a tank main body 41 described later) for storing cleaning water, and an upper surface opening (for example, an upper surface opening 411 described later) covering the tank main body. A toilet cleaning tank (for example, a toilet cleaning tank 4 described later) having a lid (for example, an inner lid 42 described later), wherein the tank body is made of a blow molded product, and the inner cover is formed of the tank body. Is attached to the upper surface opening by being screwed to a screw hole (for example, a screw hole 451 described later).

  (2) In the toilet bowl cleaning tank according to (1), an insert member (for example, an insert member 45 described later) having the screw hole is provided integrally with the tank body, and the upper surface opening and the screw hole are It is preferable that an opening is made in a cut surface cut through a midway portion in the length direction of the insert member.

  (3) In the toilet bowl washing tank according to (1) or (2), the inner lid is fitted inside the upper surface opening to be fitted to an inner peripheral surface of the upper surface opening (for example, an inner peripheral surface described later) 411a) is preferably provided with ribs (for example, ribs 427 described later).

  (4) In the toilet bowl washing tank according to any one of (1) to (3), it is preferable that the upper surface opening has an opening width of 2/3 or more of the entire width of the tank body.

  (5) In the toilet bowl washing tank according to any one of (1) to (4), the inner lid includes an inner lid body (for example, an inner lid body 421 described later) attached to the upper surface opening, and the inner lid. It is preferable to have an inspection lid (for example, an inspection lid 422 described later) that is detachably engaged with the lid body.

  (6) A toilet device according to the present invention stores a toilet main body (for example, a toilet main body 21 described later) and cleaning water supplied to the toilet main body (1) to (5). A tank (for example, a toilet bowl 4 described later).

  ADVANTAGE OF THE INVENTION According to this invention, even if it makes a tank main body thin, while being able to ensure the amount of washing water required, the toilet bowl washing tank and toilet device which can suppress a deformation | transformation of a tank main body reliably can be provided.

It is a perspective view of the toilet device provided with the toilet bowl washing tank concerning the present invention. It is a partial top view of the toilet device which shows the inside of the toilet bowl washing tank which concerns on this invention. It is a perspective view which decomposes | disassembles and shows the tank main body and inner cover of the toilet bowl washing tank which concerns on this invention. It is sectional drawing which expands and shows the principal part of the toilet bowl washing tank which concerns on this invention. It is a side view of the tank main body of the toilet bowl washing tank concerning the present invention. It is a top view of the inner lid of the toilet bowl washing tank concerning the present invention. It is a top view which shows the upper surface opening part of the tank main body of the toilet bowl washing tank which concerns on this invention. It is a perspective view of an insert member. It is a perspective view which shows the principal part of the blow molded product of a tank main body. It is a top view which expands and shows the inspection opening of an inner cover. It is a perspective view which shows the state which latched the pulling arm to the inspection opening of the inner cover.

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 toilet device in which the toilet 2 is installed on the floor surface f1. The toilet device 1 includes a toilet 2 and a toilet cleaning device 3 disposed behind the toilet 2. In the following description, the front-rear direction when viewed from the user seated on the toilet 2 is defined as the front-rear direction. Further, the left-right direction when viewed from the user seated on the toilet bowl 2 is defined as the width direction. Further, the vertical direction along the vertical direction with respect to the floor surface f1 is defined as the vertical direction.

  The toilet bowl 2 is installed on the floor surface f1 close to the standing wall surface f2. The toilet bowl 2 includes a toilet seat 22 and a toilet lid 23 that are rotatably attached to an upper portion of the toilet bowl body 21, and a toilet seat device function unit 24 that is disposed behind the toilet seat 22 and the toilet lid 23. Yes. 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, respectively, and shield the rear portion of the toilet body 21.

  The toilet bowl cleaning device 3 is arranged behind the toilet bowl body 21. The toilet bowl cleaning device 3 includes a toilet bowl cleaning tank 4 and a tank cover 5 that is an exterior body of the toilet bowl cleaning tank. As shown in FIG. 3, the toilet bowl cleaning tank 4 includes a tank body 41, an inner lid 42, and a base plate 43. A dew proof material (not shown) is provided on the outer peripheral surface of the tank body 41.

  The tank body 41 is made of a blow molded resin molded product. An upper surface opening 411 that opens in a substantially rectangular shape is provided on the upper portion of the tank body 41. The upper surface opening 411 is formed narrower than the entire width of the tank body 41. The details of the tank body 41, which is a blow molded product, will be described later.

  Wash water is stored inside the tank main body 41, and as shown in FIG. 2, internal parts for toilet flushing are accommodated. Specifically, in the tank body 41, a ball tap 4a for supplying water, a float 4b for stopping the water of the ball tap 4a, an overflow for limiting the water level of washing water and supplying makeup water to the toilet body 21 A pipe 4c, a flapper valve 4d for opening and closing the drain port, a ball chain 4e for lifting the flapper valve 4d, a pulling arm 4f for pulling up 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 pull arm 4f.

  The inner lid 42 covers the upper surface opening 411 of the tank body 41. The inner lid 42 shown in the present embodiment includes a resin inner lid body 421 attached over the entire upper surface opening 411 and a resin inspection lid detachably engaged with the inner lid body 421. 422. The inner lid 42 is attached by screwing the inner lid main body 421 into a screw hole 451 provided in the upper surface 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 covers a substantially rectangular inspection opening 423 formed in a part of the inner lid main body 421 so as to be detachable. The inspection port 423 forms a substantially rectangular opening having an area of about ½ of the entire inner lid 42. As shown in FIG. 6, the inner lid main body 421 is provided with a locking claw 424 that slightly protrudes inward at the opposite edge of the inspection port 423. On the other hand, a slit 425 is provided at a peripheral portion of the inspection lid 422 at a portion corresponding to the locking claw 424.

  By this slit 425, a narrow easily deformable portion 426 that can be easily elastically deformed is formed at the peripheral portion of the inspection lid 422. The inspection lid 422 is arranged so that the easily deformable portion 426 can be easily attached to and detached from the inner lid body 421 by moving over the locking claw 424 while elastically deforming as shown by the broken line in FIG. Match. For this reason, when accessing the inside of the tank body 41 for maintenance, it is not necessary to remove the screwed inner lid body 421, and it is easily accessible from the inspection port 423 simply by removing the inspection lid 422. Improved workability.

  The base plate 43 is attached to the lower part of the tank body 41. The base plate 43 shown in the present embodiment is formed of a resin that is harder than the tank body 41 and has a planar shape that is substantially equal to the bottom 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) protruding from the bottom of the base plate 43. It has a function of fixing the tank body 41 to the toilet body 21.

  Specifically, as shown in FIG. 4, a circular lower surface opening 413 is provided at the center 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 constituting the valve seat of the flapper valve 4d (not shown in FIG. 4), and has a flange portion 441 having a diameter larger than that of the lower surface opening 413. The valve seat 44 is mounted from the inside of the tank body 41 with a packing 44 a sandwiched between the flange portion 441 and the tank body 41.

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

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

  The base plate 43 fixed to the tank body 41 is fixed by inserting a pair of tightening bolts 431 protruding from the lower surface into a tank mounting hole (not shown) provided on the upper surface of the toilet body 21. Thereby, the tank main body 41 is fixed to the toilet main body 21 via the base plate 43. The 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 wash 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 the present embodiment is arranged at the front part of the toilet bowl washing tank 4 and covers the front of the tank body 41, and from the rear part to the side part of the toilet bowl washing tank 4. The rear cover 52 is disposed so as to cover the side and rear of the tank body 41, and the upper cover 53 is disposed on the toilet cleaning tank 4 so as to cover the tank body 41. The front cover 51 and the upper cover 53 are detachably attached to the rear cover 52. Thereby, the whole tank main body 41 is shielded by the tank cover 5, the appearance is good, and the design is improved.

  In addition, the lower part of the toilet bowl washing tank 4 and the rear part of the toilet bowl 2 are covered with a lower cover 54. As a result, piping parts (not shown) and the like arranged behind the toilet bowl 2 are blindfolded, and the rear side of the toilet bowl 2 is unified into a thin, substantially rectangular shape extending downward from the toilet bowl cleaning device 3. The property is further improved.

Here, the tank body 41 of the toilet bowl cleaning tank 4 will be further described.
The 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 be provided with a draft angle for releasing like an injection molded product in the vertical direction, as shown in FIG. It is possible to form a side wall surface that is a straight surface along and extends perpendicular to the floor surface f1. For this reason, the tank body 41 does not cause a decrease in the tank volume due to the draft in the vertical direction, and even if it is thinned in the depth direction (front-rear direction), the desired amount of washing water can be easily obtained compared to the injection molded product. It is possible to ensure.

  As shown in FIGS. 3 and 7, a plurality (four in this embodiment) of insert members 45 are provided integrally with the tank body 41 in the upper surface 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 body 41 (opening surface of the upper surface opening 411). The insert member 45 is disposed so as to protrude inward at the upper surface opening 411, and does not protrude outward from the tank body 41. Therefore, the insert member 45 does not become an obstacle when bringing the tank body 41 as close as possible to the tank cover 5.

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

  An example of the insert member 45 attached to the mold is shown in FIG. 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 semicircular surface side on one end side in the length direction of the insert member 45 (the lower end side in FIG. 8). The groove 452 increases the contact area with the resin during blow molding and prevents the insert member 45 after molding from coming out of the tank body 41.

  Further, a protrusion 453 is integrally provided on the other end side in the length direction of the insert member 45 (upper end side in FIG. 8) on the opposite side (flat surface side) to the semicircular surface. This protrusion 453 is for positioning and holding the insert member 45 at a predetermined position in the mold by fitting into a recess provided in a predetermined portion of the inner surface of 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, so that the half of the tank body 41 is shown in FIG. A product 41A as a product is blow-molded. The mold is divided in the front-rear direction (the depth direction of the tank body 41) as indicated by arrows in FIG. For this reason, a vertical draft is not formed in the molded product 41A.

  The molded product 41A immediately after blow molding has a hollow box shape that is substantially closed as a whole, and does not have an upper surface opening. The resin at the time of blow molding is in close contact with the insert member 45 along a surface (semicircumferential surface) oriented inside the mold (see FIG. 7). Thereby, the insert member 45 is integrated with the molded product 41 </ b> A so as to be embedded from the outside along a portion that later becomes the upper surface opening 411.

  Next, the upper surface opening 411 is formed by cutting the upper portion of the molded product 41A in a substantially horizontal direction. Specifically, as illustrated in FIGS. 8 and 9, the molded product 41 </ b> A is cut along a cutting line CL that passes through a midway portion in the length direction of the insert member 45. Thereby, the upper surface opening 411 and the screw hole 451 of the insert member 45 are opened in the cut surface. Since the cutting line CL is located 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 through which the spindle 4h extending from the lever handle 4g is inserted, an insertion hole 415 of a water supply hose (not shown), and the like. It is formed. Thereby, the tank main body 41 which has the insert member 45 integrally is manufactured.

  The inner lid body 421 of the inner lid 42 is screwed to the upper surface opening 411 of the tank body 41. When the inner lid main body 421 is screwed to the upper surface opening 411, deformation of the upper surface opening 411 is prevented. For this reason, even if the tank body 41 is a blow molded product, the deformation of the tank body 41 is reliably suppressed.

  The tank body 41 does not need to be formed with ribs or the like for suppressing deformation along the upper surface opening 411. Further, as described above, when accessing the inside of the tank main body 41, it is possible to easily access from the inspection port 423 by removing only the inspection lid 422. Even if the inspection lid 422 is removed, the inner lid main body 421 remains screwed, so that the tank main body 41 is not deformed. Therefore, in the toilet device 1 having the tank body 41, the tank body 41 is thinned while ensuring a desired amount of washing water, so that the size of the entire toilet device 1 in the front-rear direction (the above-mentioned size) is reduced. Also, deformation of the tank body 41 itself can be suppressed.

  In general, the 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 tank body 41 becomes easier to deform as the tank body 41 becomes thinner and the opening width of the upper surface opening 411 becomes larger. However, since the tank body 41 shown in the present embodiment can be reliably restrained from being deformed by the screwed inner lid 42, the opening width of the upper surface opening 411 can be increased. Specifically, the upper surface opening 411 can have an opening width that is 2/3 or more of the entire width of the tank body 41. As a result, even if the tank body 41 is thinned, the tank body 41 can be easily accessed without causing deformation of the tank body 41.

  As shown in FIG. 3, the inner lid main body 421 screwed to the upper surface opening 411 of the tank main body 41 has a rib 427 that protrudes toward the tank main body 41 on the back surface side (the surface facing the tank main body 41). Is integrated. The rib 427 is formed along the inner peripheral surface 411 a of the upper surface opening 411 of the tank body 41. By attaching the inner lid main body 421 to the upper surface opening 411, the rib 427 fits inside the upper surface opening 411 and supports the inner peripheral surface 411a of the upper surface opening 411 from the inner side. For this reason, the upper surface opening 411 is held in a fixed shape by the rib 427. By maintaining the upper surface opening 411 in a fixed shape, the occurrence of a gap between the inner lid 42 and the upper surface opening 411 is prevented, and the risk of water leakage is reduced. Further, when the inner lid main body 421 is attached to the upper surface opening 411, the rib 427 serves as a guide, so that the inner lid main body 421 can be easily attached.

  In the inner lid main body 421, as shown in FIG. 10, an engagement groove 428 for mounting components is formed at one corner of the inspection port 423. With this engagement groove 428, as shown in FIG. 11, the pulling arm 4f which is one of the internal parts of the tank body 41 can be engaged and temporarily fixed.

  That is, the ball chain 4e is attached to the pulling arm 4f in advance. When the toilet flushing tank 4 is assembled, the spindle 4h of the lever handle 4g is inserted from the outside through the notch 414 of the tank body 41, whereby the pulling arm 4f and the spindle 4h are connected in the tank body 41. . Therefore, normally, the pull-up arm 4f is placed in the tank body 41 without being supported at all before being connected to the spindle 4h. For this reason, conventionally, when the lever handle 4g is attached, it is necessary to insert the hand into the bottom of the tank body 41 and take out the pulling arm 4f.

  On the other hand, according to the inner lid main body 421 shown in the present embodiment, the pulling arm 4f can be temporarily fixed in the engagement groove 428. Therefore, when the lever handle 4g is attached, The lifting arm 4f can be easily taken out without having to insert a hand deeply, and the assembly workability is excellent. Moreover, it is possible to prevent the lifting arm 4f from interfering with other internal parts during transportation before the lever handle 4g is attached. For this reason, generation | occurrence | production of damage etc. of an internal component can be suppressed and the quality improvement of the toilet bowl washing tank 4 can be aimed at.

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

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

  Further, in the above embodiment, the floor-standing type toilet device 1 in which the toilet 2 is installed on the floor surface f1 is illustrated. However, the toilet flushing tank according to the present invention is a wall-mounted toilet in which the toilet is attached to a standing wall surface. The same applies to a device (not shown). In the wall-mounted toilet device, the toilet cleaning tank is installed on the back side of the standing wall.

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

Claims (6)

A toilet bowl cleaning tank having a tank body for storing washing water, and an inner lid covering an upper surface opening of the tank body,
The tank body is a blow molded product,
The toilet bowl is attached to the upper surface opening by screwing the inner lid to a screw hole provided in the tank body. The insert member having the screw hole is provided integrally with the tank body,
The toilet bowl cleaning tank according to claim 1, wherein the upper surface opening portion and the screw hole are opened in a cut surface cut through a midway portion in a length direction of the insert member.   The toilet bowl according to claim 1 or 2, wherein the inner lid has a rib that fits inside the upper surface opening and supports an inner peripheral surface of the upper surface opening.   The toilet bowl washing tank according to any one of claims 1 to 3, wherein the upper surface opening has an opening width of 2/3 or more of the entire width of the tank body.   The said inner lid has an inner lid main body attached to the said upper surface opening part, and the inspection lid | cover which detachably engages with respect to the said inner lid main body, The any one of Claims 1-4. Toilet bowl.   A toilet apparatus comprising: a toilet bowl body; and the toilet bowl cleaning tank according to any one of claims 1 to 5 that stores wash water supplied to the toilet bowl body.

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