JP2013104202A - Mounting structure for drainage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure for a drainage device, in which dust, waste water, and the like are hardly collected in a joint of a connection between a washbowl, sink, bathtub, waterproof pan, or the like and a drainage device for discharging the waste water to a sewage side, and which is excellent in cleanability and design.SOLUTION: When a tank body 1 having an opening 2 such as a drain outlet is molded, a connection member 11 having a connection mechanism for connecting the tank body 1 to a drainage device 7 is insert-molded on a back side of the tank body 1. Thereafter, the connection member 11 and the drainage device 7 are connected together at a construction site. The connection member 11 is insert-molded on the tank body 1, thereby improving the accuracy and the degree of freedom of the shape of the connection mechanism.

Description

  The present invention relates to a structure for attaching a drainage device to a tank body such as a waterproof pan, a shower pan, a bathtub pan, or a washing pan in addition to a wash bowl, a sink, and a bathtub.

  As a conventional drainage device mounting structure, a connecting member having a flange is dropped from the tank body surface side through a packing into the opening provided on the bottom surface and side surface of the tank body, and the screwing force of the screw from the tank body back side It is known that the connecting member and the drainage device are attached using, for example.

  However, in the mounting structure as described above, the flange portion of the connecting member described above is always exposed on the surface of the tank body, so that it remains in the step formed between the tank body and the flange portion of the connection member. Dirt such as water and scale was generated, causing problems in hygiene and aesthetics.

  Therefore, in order to improve the cleaning property and the design property, there is a demand for a so-called “flangeless structure” mounting structure in which the connecting member is not exposed on the surface side of the tank body. In JP 2006-079843 A (hereinafter referred to as “Patent Document”), as a mounting structure for solving the above-mentioned problem, a drain port side wall or a collar portion that hangs down from the drain port by pressing a thin plate of stainless steel or the like. A flangeless structure is described in which a mounting portion serving as one nut is provided by combining two semicircular arc members on the drain outlet side wall. Further, in the mounting structure described in the patent document, the mounting portion is provided with a protrusion, and the protrusion is engaged with the flange portion to prevent idle rotation, and the female screw is inserted through the flange portion. The attached part having the part and the attaching part are screwed together to be connected.

JP 2006-079843 A

  The mounting structure described in the above-mentioned patent document forms the mounting portion by combining two semicircular arc members. However, in the mounting portion described in the patent document, a protrusion for preventing idling is provided below the mounting portion, and if a force is applied from below to screw the mounted portion, Construction has been difficult because the fitting has been released or the mounting part has been divided by impact during construction. Moreover, in the tank body by resin molding, such as artificial marble, it was difficult to take the structure as described in patent documents from the precision problem.

  Therefore, in view of the above problems, the present invention has an object to provide a drainage device mounting structure that improves the cleanability and designability of an artificial marble or other resin-molded tank body and that is easy to construct. .

The invention according to claim 1 for solving the above-mentioned problem is as follows.
A tank body having an opening for discharging waste water;
It is an attachment structure with a drainage device that drains drainage flowing from the tank body to the sewage side,
The tank body has an extending part extending from the opening to the back side of the tank body,
The extension part is provided with a connection member having a connection mechanism for connecting to the drainage device,
The drainage device mounting structure is characterized in that the connecting member is fixed to the extension by insert molding.

The invention described in claim 2
The drainage device mounting structure according to claim 1, wherein a flange portion for fixing and positioning the connection member is provided in the extension portion.

The invention according to claim 3
The drainage device mounting structure according to claim 2, wherein the flange portion is covered with a connection member.

The invention according to claim 4
A tank body having an opening for discharging waste water;
It is an attachment structure with a drainage device that drains drainage flowing from the tank body to the sewage side,
A connection member having a connection mechanism for connecting to the drainage device is provided around the opening,
The connecting member is fixed to the back side of the tank body by insert molding,
The connection member is a drainage device mounting structure characterized in that it extends continuously over the circumferential direction of the opening.

The invention described in claim 5
The tank connecting structure according to any one of claims 1 to 4, wherein the connecting member is a nut ring having a threaded portion.

The invention described in claim 6
5. The tank mounting structure according to claim 1, wherein the connection member includes a rotation lock mechanism.

The invention described in claim 7
The attachment structure according to claim 1, wherein the connection member and the drainage device are connected by a quick fastener.

The invention according to claim 8 provides:
A tank body having an opening for discharging waste water;
It is an attachment structure with a drainage device that drains drainage flowing from the tank body to the sewage side,
A connection member having a connection mechanism for connecting to the drainage device is provided around the opening,
The drainage device mounting structure is characterized in that the connecting member is protruded and fixed at a plurality of locations in the back surface side of the tank body and in the circumferential direction of the opening by insert molding.

The invention according to claim 9 is:
The drainage device mounting structure according to claim 8, wherein the connection member has a male screw portion.

Invention of Claim 10 is the attachment structure of the drainage device as described in any one of Claim 1 thru | or 9, The said opening part is a drain outlet and / or an overflow hole.

In this invention of Claim 1, the connection member is being fixed to the extension part extended from the opening part of a tank body to the back surface side of a tank body by insert molding. Therefore, it is possible to make the attachment structure with the drainage device a flangeless structure in which there is no flange on the surface side of the tank body, and no level difference occurs (the flange is not exposed to the surface side of the tank body to the last, Meaning). Therefore, according to the invention of the present application, it is possible to provide a structure excellent in cleaning property and design property compared to the conventional example. In addition, since the connecting member is fixed to the tank body by insert molding, the labor of attaching the connecting member at the construction site can be saved, and when the drainage device is attached to the tank body, the connecting member will not be idle, It becomes easy. Furthermore, since the connection member molded in advance is fixed to the tank body by insert molding, it is possible to improve the accuracy of the connection mechanism and provide an attachment structure with a high degree of freedom in shape.

  In the present invention of claim 2, since the flange portion for fixing or positioning the connecting member is provided in the extending portion extending from the tank body, the tank body is being transported to the construction site or Even if an impact is applied to the connecting member during construction, the connecting member does not fall.

  In this invention of Claim 3, since the flange part of a tank body is coat | covered with the connection member, it is possible to fix a connection member more firmly.

  In this invention of Claim 4, since a connection member is fixed to the back surface side of a tank body by insert molding, and is extended continuously over the circumferential direction of an opening part, the area which provides a connection mechanism increases. In addition, the tank body and the drainage device can be connected without waste along the opening.

In this invention of Claim 5, since a connection member is a nut ring which has a thread part, it is possible to perform attachment of a tank body and a drainage device more firmly.

  According to this invention of Claim 6, since a connection member is provided with a rotation lock mechanism, it is possible to attach a tank body and a drainage device more easily.

  According to this invention of Claim 7, since a connection member and a drainage device are connected by a quick fastener, it becomes possible to attach a tank body and a drainage device more easily.

  According to this invention of Claim 8, since it has the several connection member protrudingly fixed over the back surface side of the tank body and the circumferential direction of an opening part, a tank body and a drainage device are in several places. Can be attached, and impact resistance is improved.

  According to this invention of Claim 9, since a connection member has an external thread part, it is possible to perform attachment of a tank body and a drainage device more firmly.

  According to this invention of Claim 10, the attachment position of a tank and a drainage device can be clarified.

It is principal part sectional drawing of the attachment structure which concerns on 1st embodiment of this invention. It is (a) top view (b) bottom view of the connection member concerning a first embodiment of the present invention. It is sectional drawing (a)-(c) showing the process of insert molding of the tank and connection member which concern on 1st embodiment of this invention. It is principal part sectional drawing of the attachment structure which concerns on 2nd embodiment of this invention. It is sectional drawing showing the state at the time of insert molding of the tank and connection member which concern on 2nd embodiment of this invention. It is principal part sectional drawing of the attachment structure which concerns on 3rd embodiment of this invention. It is principal part sectional drawing of the attachment structure which concerns on 4th embodiment of this invention. It is a perspective view showing a connection member and a part of drainage device concerning a fourth embodiment of the present invention. It is principal part sectional drawing of the attachment structure which concerns on 5th embodiment of this invention. It is a perspective view of the quick fastener used for the attachment structure which concerns on 5th embodiment of this invention. It is principal part sectional drawing of the attachment structure which concerns on 6th embodiment of this invention. It is principal part sectional drawing which shows another form of this invention. It is a top view which shows the connection member in another form of this invention.

  Embodiments of the present invention will be described below in detail with reference to the drawings. The following description is for facilitating the understanding of the embodiments, and the present invention is not limited thereto. In addition, unless otherwise noted, the upper and lower sides will be described with reference to the state of FIG. 1 in each embodiment, and the back and front of the tank body are exposed to the user side during normal use (the upper surface side in FIG. 1). ) Is the surface side of the tank body. In addition, when using the thing of the same shape in each embodiment, the same number is attached | subjected and description is abbreviate | omitted.

  The mounting structure in the first embodiment of the present invention shown in FIG. 1 includes a tank body 1, a drainage device 7, a connection member 11, a packing 18, and a nut 19.

  The tank body 1 is a wash bowl made of artificial marble or other resin, and has an opening 2 which is a circular drain port on the bottom surface. Further, from the rear surface side of the tank body 1, an extended portion 3 formed to extend in a cylindrical shape so as to hang down from the opening 2 (drain port), and an extended portion 3 at the lower end of the extended portion 3. The flange part 4 which forms a flange outward in the circumferential direction is formed.

  The drainage device 7 is a cylindrical drainage pipe provided with a flow path for discharging wastewater that has entered the interior to the sewage side, and the flange portion 8 is disposed outward in the circumferential direction of the drainage device at the upstream end. It forms and connects with the above-mentioned flange part 4 via the disk-shaped packing 18. The drainage device 7 is connected to a drainage trap (not shown) on the downstream (sewage) side.

  As shown in FIG. 1, the connecting member 11 is a member that is arranged and fixed on the outer periphery of the extending portion 3 of the tank body 1. As shown in FIG. 2, the connecting member 11 is a substantially D-shaped member in plan view (bottom view) composed of an arc portion having three male screw portions 12 and three straight portions 13. Are provided at approximately 90 degrees at three positions on the upper side, the lower side, and the left side in the plan view shown in FIG. A male screw portion 12 as a connection mechanism is formed in the arc portion, and one outer convex portion 14 is provided only in the vicinity of the center of the left straight portion 13 in FIG. 2A among the three straight portions 13. It has been. Further, as shown in FIG. 2B, two lower convex portions 15 are provided on the back surface. The inner circumference of the connecting member 11 is a circle having the same diameter as the outer diameter of the extending portion 3, and the diameter L1 passing through the outer convex portion 14 and the center is shorter than the diameter L2 connecting the arc portions. .

  The tank body 1 and the drainage device 11 described above are molded and constructed as follows.

  First, after the connecting member 11 is molded, as shown in FIG. 3 (a), it is composed of three molds (100a, 100b, and 100c) in the tank body 1. Hereinafter, the three molds will be referred to. When collectively describing, the connection member 11 is disposed on the “mold 100”) and insert molding is performed. At this time, the outer convex portion 14 of the connecting member 11 is inserted into the concave portion 101 provided in the mold 100b, the arrangement of the connecting member 11 in the mold 100 is determined, and insert molding is performed.

When insert molding is performed, as shown in FIGS. 3B and 3C, the resin enters the cavity 102 in the mold 100 to form the tank body 1. At this time, the connecting member 11 is sandwiched between the bottom surface of the tank body 1 on the back surface side and the flange portion 4, and the lower convex portion 15 is embedded in the flange portion 4, so that the connecting member 11 moves up and down and rotates. Fixed to impossible.
The tank body 1 and the connecting member 11 thus molded are delivered to the construction site.

  Next, at the construction site, the lower surface of the flange portion 4 of the delivered tank body 1 and the upper surface of the flange portion 8 of the drainage device 7 are brought into contact with each other via the packing 18, and then the female screw of the nut 19 from the drainage device 7 side. The portion and the male threaded portion 12 of the connecting member 11 are screwed together and connected. At this time, since the diameter L1 of the connecting member 11 is shorter than the diameter L2 as described above, the outer convex portion 14 does not interfere with the screwing, and the tank body 1 and the drainage device 7 are attached in a watertight manner.

In the first embodiment described above, the connection member 11 is interposed between the bottom surface on the back side of the tank body 1 and the flange portion 4, but the connection member 21 in the second embodiment of the present invention shown in FIG. Like, it may be insert-molded so that the circumference | surroundings of the flange part 4 may be covered.

As described above, the connecting member 21 in the second embodiment shown in FIG. 4 is insert-molded so as to cover the periphery of the flange portion 4 and has a male screw portion 22 on the outer periphery. It is provided only in the vicinity of the center of the, and no male screw is formed in the vicinity of the upper end and in the vicinity of the lower end.
Therefore, the connection member 21 can be placed on the bottom surface of the mold 200b when it is installed in the mold 200 shown in FIG. 5, and the layout can be easily determined at the time of insert molding.
In this embodiment, since the male screw is not formed in the vicinity of the upper end and the lower end of the connection member 21, a recess 201 that is a space for housing the male screw portion 22 of the connection member 21 is provided in the molds 200 b and 200 c. I can do it. When the mold 200 having the structure is closed, the side wall around the recess 201 comes into contact with the upper end portion and the lower end portion of the connecting member 21 where the male screw portions are not formed, and the resin enters the male screw portion 22. Is prevented, and the die 200 does not come into contact with the male screw portion 22, and the thread can be protected. That is, the connecting member 21 in the second embodiment of the present invention can be more stably molded than the connecting member 11 in the first embodiment of the present invention, and has a good connection when attached to the tank body. It is possible to improve watertightness related to screwing.

Next, a third embodiment of the present invention will be described in detail with reference to FIG.
The mounting structure in the third embodiment of the present invention shown in FIG. 6 includes a tank body 31, a drainage device 37, a connection member 41, a packing 38, and a nut 39.

The tank body 31 is an artificial marble or other resin wash bowl, and is provided with an opening 32 as a circular drain on the bottom surface. In addition, on the back side of the tank body 31, the vicinity of the opening 32 (drain port) is formed thicker than the other portions, and the thickened portion is provided with a held portion 43 of the connecting member 41 described later. A holding portion 33 which is a space for holding is provided inside during insert molding.

  The drainage device 37 is a cylindrical drainage pipe having a flow path for discharging wastewater that has entered the inside to the sewage side, and is connected to a connection member 41 described later via a packing 38 having an annular shape and a substantially triangular cross section. To do.

  The connection member 41 is a substantially cylindrical member, and has a held portion 43 that forms a flange outward in the circumferential direction of the connection member 41 on the upper end side, and both the inner diameter and the outer diameter expand on the lower end side. . And the external thread part 42 for connecting with the drainage device 37 is provided only in the outer periphery of the center vicinity of the said enlarged diameter part, and the external thread is not formed in the upper end vicinity of the enlarged diameter part and the lower end vicinity. The inner diameter of the upper end side of the connection member 41 is substantially equal to the opening 32, and the inner diameter of the lower end side (expanded portion) is substantially equal to the outer diameter of the drainage device 37.

  The tank body 31 and the connection member 41 described above are insert-molded and arranged and fixed to the tank body 31 as in the first and second embodiments described above. At this time, the holding part 33 of the tank body 31 covers and holds the periphery of the held part 43 formed on the connection member 41, and the connection member 41 is fixed so as not to move up and down and turn. At this time, the inner periphery of the opening 32 of the tank body 31 and the upper end side of the connecting member 41 where the diameter of the connecting member 41 is not enlarged is substantially flush.

  Then, after the tank body 31 and the connection member 41 are fixed by insert molding, the nut 39 and the connection member are inserted through the packing 38 while inserting the drainage device 37 from below into the enlarged diameter portion of the connection member 41 at the construction site. The construction is completed by screwing the male threaded portion 42 of 41.

  In this embodiment, since the inner diameter of the opening 32 and the connection member 41 is substantially equal as described above, the boundary between the tank body 31 and the connection member 41 can be visually recognized from the surface side of the tank body 31. Absent. Therefore, it has excellent design properties, and the boundary extends in the horizontal direction. Therefore, residual water is hardly generated and dirt such as water scale is hardly generated.

In the first embodiment to the third embodiment described above, the connection mechanisms provided on the connection members are all screws, and are connection mechanisms using a screwing force. It is not limited.

For example, in the connection member 51 according to the fourth embodiment of the present invention shown in FIGS. 7 and 8, the connection mechanism is composed of a rotation lock mechanism 52 provided around the lower end of the connection member 51 described later.

  The mounting structure in the fourth embodiment of the present invention includes a tank body 31, a connecting member 51, a packing 58, and a drainage device 57. In addition, since the tank body 31 is a member similar to 3rd embodiment mentioned above, the same number is attached | subjected and description is abbreviate | omitted.

The connection member 51 is a substantially cylindrical member, and has a held portion 53 that forms a flange outward in the circumferential direction of the connection member 51 on the upper end side, and is connected to the drainage device 37 on the outer periphery of the lower end. It has a rotation lock mechanism 52 which is a connection mechanism. An annular packing 58 is mounted on the outer periphery near the middle between the held portion 53 and the rotation lock mechanism 52. Note that the inner diameter of the connecting member 51 is substantially equal to the opening 32, and is continuous with the opening 32 when being insert-molded inside the tank body 31.
As shown in FIG. 8, the rotation lock mechanism 52 provided in the connection member 51 includes an oblique groove portion 54 having a lateral width that is slightly wider than the lateral width of the projection portion 60 provided on the inner periphery of the drainage device 57 described later. It comprises a lateral groove portion 55 that extends in the arc direction in communication with the oblique groove portion 54 and on the side surface portion above the oblique groove portion 54. The oblique groove portion 54 extends upward from the lower end of the connection member 51 and is inclined to the side on which the above-described lateral groove portion 55 extends. In addition, the horizontal groove 55 is slightly wider in the vicinity of the oblique groove 54 than the protrusion 60, but gradually becomes narrower as the distance from the oblique groove 54 communicates with the protrusion 60 in the longitudinal direction. Tapered to fit.

The drainage device 57 is provided with a guide 59 having an increased inner diameter at the upstream end, and a flat projection 60 at four locations on the inner periphery. The inner diameter of the drainage device 57 is substantially the same as the outer diameter of the connecting member 51 described above.

The fourth embodiment of the present invention is constructed as follows.
As in the other embodiments, after the connection member 51 is insert-molded into the tank body 31, the packing 58 is attached to the connection member 51 and delivered to the construction site. At the construction site, while inserting the drainage device 57 from below the connecting member 51, the protruding portion 60 is pressed against the oblique groove portion 54 of the connecting member 51 (rotation lock mechanism 52), and the nut 59 is rotated, thereby the protruding portion. 60 enters the lateral groove 55. At this time, as described above, since the inside of the lateral groove portion 55 is formed in a tapered shape, the protrusion 60 is clamped and fixed in the lateral groove portion 55. At this time, the packing 58 attached to the connection member 51 is brought into contact with the drainage device 57, so that watertightness is maintained.

  In this embodiment, since the rotation lock mechanism is adopted as the connection mechanism, unlike the connection by screws, there is no possibility that the nut is inclined and attached, and the number of rotations required for connection may be reduced compared to the screws. Since it is possible, construction becomes easy.

  Next, a fifth embodiment of the present invention will be described in detail with reference to FIG.

  The mounting structure according to the fifth embodiment of the present invention shown in FIG. 9 includes a tank body 31, a drainage device 67, a connection member 61, a packing 18, and a quick fastener 69.

  The connecting member 61 is a substantially U-shaped member that forms flanges at the upper and lower ends, and has a flange portion 62 that is a connecting mechanism with a quick fastener 69 described later at the lower end, and the inside of the tank body 31 at the upper end. There is provided a held portion 63 for holding and fixing to be removed and added when embedded in. The inner diameter of the connecting member 61 is substantially equal to the opening 32 of the tank body 31, and when embedded in the tank body 31, the opening 32 and the connecting member 61 are substantially flush with each other.

  The drainage device 67 is a cylindrical drainage pipe having a flow path for discharging wastewater that has entered the inside to the sewage side, and a flange portion 68 is formed outwardly on the circumferential side of the drainage device 67 at the upstream end. Forming.

  The quick fastener 69 has a structure already known from "JP-A-2001-98605" and the like, and as shown in FIG. 10, it is substantially C-shaped with a notch partly in plan view. 67 has a groove 70 into which the flange portion 68 of the 67 and the flange portion 62 of the connecting member 61 are fitted.

  The tank body 31 and the drainage device 67 described above are constructed as follows.

  In the fifth embodiment of the present invention, the connection member 61 is insert-molded into the tank 31 and delivered to the construction site, as in the other embodiments. At the construction site, the flange portion 68 of the drainage device 67 is brought into contact with the lower surface of the flange portion 62 of the connection member 61 via the packing 18, and the quick fastener 69 is pressed from the side to connect the connection member 61 and the drainage device 67. Fix the connection and complete the installation. At this time, as described above, the flange portion 62 and the flange portion 67 are fitted into the groove 70 on the outer periphery of the quick fastener 69.

  In this embodiment, since a quick fastener is used for attachment, the connection process is reduced, the construction is facilitated, and the construction speed is improved. Further, since the connecting member comes into contact with the flange portion of the drainage device, the water tightness is improved.

  Next, a sixth embodiment of the present invention will be described in detail with reference to FIG.

  The mounting structure according to the sixth embodiment of the present invention shown in FIG. 11 includes a tank body 71, a drainage device 77, a connection member 81, a packing 88, and a nut 89.

  The tank body 71 is a wash bowl made of artificial marble or other resin, and an opening 72 which is a circular drain port is provided on the bottom surface. Further, the vicinity of the opening 72 (drain port) is formed thicker than other portions, and the thick portion is a holding portion 73 that is a space for holding a held portion 83 of a connection member 81 described later. Inside. The holding portion 73 is provided at a plurality of locations around the opening 72.

The drainage device 77 is a cylindrical drainage pipe provided with a flow path for discharging wastewater that has entered the inside to the sewage side, and a flange portion 78 is formed outward in the circumferential direction of the drainage device at the upstream end. And it connects with the connection member 81 mentioned later via the annular packing 88. FIG. The flange portion 78 is provided with a plurality of holes 79 having a diameter that allows a male screw portion 82 of a connecting member 81 to be described later to pass therethrough.

  The connection member 81 is a substantially cylindrical screw-like member having an external thread portion 82 on the outer periphery, and has a held portion 83 having a flange shape at the top. The outer periphery of the held portion 83 does not have a male screw portion. In addition, a plurality of connection members 81 are used in the same manner as the holding portion 73 provided in the tank body 71 described above.

  The tank 71 and the drainage device 77 described above are constructed as follows.

  In this embodiment, like the other embodiments, after the connecting member 81 is insert-molded into the tank body 71, it is delivered to the construction site, and at the construction site, the upper surface of the flange portion 78 of the drainage device 77 through the packing 88, Press against the opening 72 of the tank body 71 from the back side. At this time, a plurality of connection members 81 protrude from the rear surface side of the tank body 71. As described above, the flange portion 78 of the drainage device 77 is provided with a plurality of holes 79, and each of the connection members 81 has a hole 79. Therefore, the upper surface of the flange portion 78 can be pressed against the tank body 71. In this state, the drainage device 77 is fixed in a watertight manner by screwing the nut 89 into the male screw portion 82 of the connection member 81.

  In this embodiment, since the tank body and the drainage device are attached by connecting members provided at a plurality of locations, it is possible to perform firm attachment.

  In addition, although the opening part of each tank in the said 1st embodiment thru | or 6th embodiment pointed out all the drain outlets, this invention is limited and interpreted as a structure which can be utilized only for a drain outlet. is not. For example, as shown in FIG. 12, not only the opening 85 that is a drain outlet provided in the bottom surface of the tank body 84 but also the overflow hole provided in the side part as the opening 86 may be used in the mounting structure of the present invention. good.

  In the first embodiment to the sixth embodiment, all the tank bodies to which the drainage device is attached are the wash bowls. However, the present invention is interpreted as a structure that can be used only for the wash bowls. It is not something. The tank body in which the present invention can be used may be a tank body having an opening for discharging drainage, such as a waterproof pan, a shower pan, a bathtub pan, or a washing pan, in addition to a sink bowl and a bathtub.

  Moreover, in the said 1st embodiment thru | or 6th embodiment, although all the opening parts of each tank were circular, this invention is limited to this and is not interpreted. For example, by changing the shape of the inner periphery of the connection member 91 as in the connection member 91 shown in FIG. 13, it is possible to deal with a non-circular opening. Furthermore, according to the connection member 91 having the above shape, since the shape of the inner periphery is non-circular, rotation in the circumferential direction can be more easily prevented without providing a protrusion for preventing rotation. Moreover, you may employ | adopt the structure which prevents rotation by providing an unevenness | corrugation in an inner periphery irrespective of circular and non-circular.

1, 31, 71, 84 Tank 2, 32, 72, 85, 86 Opening 3 Extension 7 Drainage device 11, 21, 41, 51, 61, 81, 91 Connection member 12, 22, 42, 82 Male thread Part 52 rotation lock mechanism 62 flange part 69 quick fastener

Claims (10)

A tank body having an opening for discharging waste water;
It is an attachment structure with a drainage device that drains drainage flowing from the tank body to the sewage side,
The tank body has an extending part extending from the opening to the back side of the tank body,
The extension part is provided with a connection member having a connection mechanism for connecting to the drainage device,
The drainage device mounting structure, wherein the connecting member is fixed to the extending portion by insert molding
The drainage device mounting structure according to claim 1, wherein a flange portion for fixing and positioning a connection member is provided in the extension portion.
The drainage device mounting structure according to claim 2, wherein the flange portion is covered with a connection member.
A tank body having an opening for discharging waste water;
It is an attachment structure with a drainage device that drains drainage flowing from the tank body to the sewage side,
A connection member having a connection mechanism for connecting to the drainage device is provided around the opening,
The connecting member is fixed to the back side of the tank body by insert molding,
The drainage device mounting structure, wherein the connecting member extends continuously over the circumferential direction of the opening.
The tank attachment structure according to any one of claims 1 to 4, wherein the connecting member is a nut ring having a threaded portion.
The tank attachment structure according to any one of claims 1 to 4, wherein the connection member includes a rotation lock mechanism.

The mounting structure according to any one of claims 1 to 4, wherein the connecting member and the drainage device are connected by a quick fastener.
A tank body having an opening for discharging waste water;
It is an attachment structure with a drainage device that drains drainage flowing from the tank body to the sewage side,
A connection member having a connection mechanism for connecting to the drainage device is provided around the opening,
The drainage device mounting structure, wherein the connecting member is fixed by being protruded at a plurality of locations on the back side of the tank body and in the circumferential direction of the opening by insert molding.
The drainage device mounting structure according to claim 8, wherein the connecting member has a male screw portion.
  The drainage device mounting structure according to any one of claims 1 to 9, wherein the opening is a drainage port and / or an overflow hole.

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