JP2018091066A - Drainage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage device that secures the strength of a drain plug, prevents breakage of a member, and secures an inner diameter of a drainage port.SOLUTION: The drainage device comprises an opening 11 formed in the bottom of a tank body B and a drainage plug 2 attached to the opening 11 to form a drainage port 25. The drainage plug 2 includes a cylindrical portion 21 having a drainage flow channel in the cylindrical portion and a flange portion 22 that extends outwardly and engages with a periphery of the opening, and a corner portion 24 where the outer periphery of the cylindrical portion 21 intersects the lower surface of the flange portion 22 is formed in a curved surface shape.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a drainage device including a drain plug that is attached to various tank bodies such as a bathtub, a sink, and a wash bowl, and forms a drain outlet.

As a conventional drain plug device, as described in Patent Document 1, a drain device in which a drain plug is attached to an opening formed at the bottom of a tank body is known. The tank body will be described in detail. A drainage recess is formed in the bottom of the tank body, and an inner flange is formed inward from the drainage recess. And the opening part is formed inside the inner collar part.
The drain plug has a substantially cylindrical shape, and a flange portion extending outward is formed at the upper end of the drain plug, and the flange portion engages with the periphery (inner collar portion) of the opening. It is attached to the tank body. Further, the drain plug has a drain passage formed therein, and when attached to the tank body, forms a drain outlet for discharging the drainage in the tank body.

JP 2009-57687 A

  The drain plug described in Patent Document 1 is attached to the tank body by screwing with a nut disposed below the tank body. Here, the stress accompanying tightening of the nut concentrates on the corner where the cylindrical portion and the flange portion intersect. Therefore, when the nut is tightened with a strength of a predetermined torque or more, the member is broken around the corner. Further, depending on the shape of the tank body, the length of the inner flange portion may not be sufficiently secured. In this case, however, the flange portion is shortened, so that damage is particularly likely to occur. In addition, when the diameter of the opening cannot be secured sufficiently, the wall thickness of the drain plug may be reduced in order to secure the inner diameter of the drain outlet, and even in this case, damage to the member occurs around the corner. Cheap. On the other hand, if the thickness of the drain plug is to be secured, the inner diameter of the drain port cannot be secured sufficiently and the drainage flow rate is deteriorated.

  In view of the above problems, an object of the present invention is to ensure the strength of the drain plug, prevent the member from being damaged, and ensure the inner diameter of the drain port.

The present invention as set forth in claim 1 for solving the above-described problems, includes an opening formed at the bottom of the tank body,
A drainage device having a drain plug attached to the opening to form a drainage port;
The drain plug has a cylindrical portion having a drain channel inside,
Extending toward the outside, having a flange portion that engages with the periphery of the opening,
The drainage device is characterized in that a corner portion where the outer periphery of the tubular portion and the lower surface of the flange portion are formed in a curved shape.

As for this invention of Claim 2, the said tank body is,
A drain recess recessed in the bottom;
Provided with an inner flange protruding inward from the lower end of the drainage recess,
The opening is formed inside the inner collar,
2. The drainage device according to claim 1, wherein the drain plug is locked to the inner flange portion.

According to a third aspect of the present invention, the flange portion has a locking portion that locks to the periphery of the opening on the lower surface thereof.
The drainage device according to claim 1 or 2, wherein the locking portion is inclined upward.

The present invention according to claim 4 is characterized in that the drain plug is
Equipped with a valve body that opens and closes the drain by moving up and down,
The said valve body has a cover part which covers a drain outlet, and the said cover part is continued with the bottom face of a tank body at the time of a valve body raise | lifting, It is any one of Claim 1 thru | or 3 characterized by the above-mentioned. The drainage device described.

In the present invention according to claim 5, the drain plug is
Equipped with a valve body that opens and closes the drain by moving up and down,
The said valve body has a cover part which covers a drain outlet, and the said cover part is continued with the bottom face of a tank body at the time of a valve body raise | lifting, It is any one of Claim 1 thru | or 3 characterized by the above-mentioned. The drainage device described.

In the present invention according to claim 1 and claim 2, since the corner portion where the outer periphery of the cylindrical portion and the lower surface of the flange portion intersect is formed in a curved surface shape, it is possible to ensure the thickness of the corner portion. In addition, when the drain plug is attached, the stress concentrated on the corners can be dispersed to increase the strength. Accordingly, it is possible to prevent the member from being damaged at the time of tightening or the like.
In this invention of Claim 3, since the said corner | angular part can be arrange | positioned inside an opening part because an engaging part inclines upwards, space saving is attained. Moreover, it becomes possible to ensure a large area of the drainage channel inside the drain plug.
In this invention of Claim 4, since it continues with the bottom face of a tank body when the valve body raises, the design property at the time of drainage improves.
In this invention of Claim 5, even if it is a case where packing is exposed from the outer side of a flange part, since the said packing is covered with a valve cover, it becomes possible to maintain a high designability.

It is sectional drawing which shows the construction state of this invention. It is sectional drawing which shows the drain plug vicinity and the operation part vicinity. It is sectional drawing which shows the drain plug vicinity. It is sectional drawing which shows a drain plug. It is an enlarged view which shows the corner | angular part vicinity of a drain plug. It is sectional drawing which shows the raising state of a valve body.

   Hereinafter, the drainage device of the present invention will be described with reference to the drawings. The following description is for facilitating understanding of the embodiment, and the present invention is not limited and understood by this.

   Hereinafter, the present invention will be described with reference to FIGS. In addition, the tank 1 which concerns on 1st embodiment is a wash bowl.

  As shown in FIG. 1, the tank body 1 has a box shape in cross section, and an opening 11 is formed at the bottom. The tank body 1 will be described in detail. As shown in FIG. 2 and FIG. 3, the drain recess 12 is provided downward from the bottom surface 14, and the inner flange 13 is disposed at a position further down from the drain recess 12. The opening 11 is formed inside the inner flange 13. In addition, the internal diameter of the drain recessed part 12 is larger than the outer diameter of the valve lid 51 of the valve body 5 mentioned later.

The drain plug 2 is a hollow and cylindrical drain pipe that forms a drain passage inside, and includes a cylindrical tubular portion 21 and a flange portion 22 formed from the outer periphery of the upper end of the tubular portion 21 to the outside. It is configured. Here, the drain plug 2 is attached to the opening 11 and forms a drain port 25 for discharging the waste water in the tank body 1.
The cylindrical portion 21 has a male screw formed on a side surface below the flange portion 22 and is screwed with a female screw of a nut via the overflow adapter 4.
The flange portion 22 is formed so that the upper surface and the lower surface thereof are inclined upward, and the back surface is formed in an arc shape so as to be tapered toward the tip. Here, “inclined upward” refers to having an angle of 0 ° or more with respect to the horizontal. The lower surface of the flange portion 22 is a locking portion 23 that is locked to the periphery of the opening portion 11 (inner collar portion 13) via the packing 3, and the locking portion 23 is also inclined upward. Accordingly, the upper and lower surfaces of the flange portion 22 are all inclined upward.
Here, as shown in FIG.4 and FIG.5, the corner | angular part 24 where the outer periphery of the said cylindrical part 21 and the flange part 22 lower surface form is formed in the curved surface shape. The curvature of the corner portion 24 is appropriately set depending on the thickness of the inner flange portion 13 and the like, but it is desirable that the radius be 2 mm or more, more preferably 5 mm or more. The curved surface does not always have to have a constant curvature, and may be variable. And since the corner | angular part 24 is formed in the curved surface shape, while it becomes possible to keep the wall thickness T2 of the corner | angular part 24 more than fixed, it is screwed together with the said nut and the drain plug 2 is attached to the tank body 1 When applied, the stress applied to the corners 24 can be dispersed to increase the strength. The thickness T1 of the cylindrical portion 21 is about 4 to 5 mm, whereas the thickness T2 of the corner portion 24 is 2.5 mm to 5.5 mm, more preferably 3.5 mm to 4.5 mm. It is preferable to be formed in the following manner.
Further, since the locking portion 23 is inclined upward, more than half of the corner portion 24 (all of the curved surface portion in the first embodiment) is disposed below the upper surface of the inner flange portion 13. Yes.

  The packing 3 is arcuate in section when the construction is completed, and is made of an elastic member such as rubber or silicon. As shown in FIG. 3, the packing 3 abuts on the upper surface so as to cover the lower surface of the locking portion 23, and improves the water-stopping property by abutting on the lower surface over the side surfaces of the inner flange portion 13 and the drainage recess 12. ing. Note that the outer end of the packing 3 is exposed from the outside of the flange portion 22 by being sandwiched between the locking portion 23 and the inner flange portion 13.

  The overflow adapter 4 is an adapter member having a branch pipe portion 41 that is connected to an overflow channel through which drainage from an opening formed on the side surface of the tank body 1 is discharged, and from a window portion formed on the side surface of the drain plug 2. Drainage from the overflow channel is caused to flow into the drain plug 2. The overflow adapter 4 is provided with a packing having a substantially U-shaped cross section at the upper side, and a packing having a substantially triangular shape in a cross-sectional view at the lower side, and is urged upward by a nut.

As shown in FIGS. 2 and 6, a valve body 5 is disposed inside the drain plug 2. The valve body 5 includes a valve lid 51 that opens and closes the drain port 25, a valve shaft 52 attached to the back surface of the valve lid 51, and an eye plate 53 that supplements dust.
The valve lid 51 is a lid portion that covers the upper surface of the drain plug 2, and a packing is fitted around the valve lid 51. Here, the outer diameter of the valve lid 51 is smaller than the inner diameter of the drain recess 12 and larger than the outer diameter of the packing 3. Accordingly, the valve lid 51 can freely move up and down without interfering with the inner wall of the drain recess 12 and covers the packing 3 exposed from the outside of the flange portion 22 to improve the design. .
The valve shaft 52 is a metal shaft member that passes through the center of the eye plate 53 and has an upper end fitted to the back surface of the valve lid 51. The lower end of the valve shaft 52 is placed on an elevating part 61 connected to the end of the transmission part 6.

  The transmission unit 6 is a known release wire composed of a resin outer tube and an inner wire that is a metal stranded wire disposed in the outer tube. The transmission unit 6 rotates the lifting unit 61 in accordance with the operation of the operation unit 7. The valve body 5 placed on the elevating part 61 is raised and lowered.

Each said member is constructed as follows.
First, the drain plug 2 is inserted into the opening 11 of the tank body 1. Next, the overflow adapter 4 is inserted from the lower end of the drain plug 2, and the drain plug 2 is attached to the tank body 1 by screwing the nut and the drain plug 2 while pressing the triangular packing against the lower end of the overflow adapter 4. It is done. That is, the inner flange portion 13 of the tank body 1 is sandwiched between the locking portion 23 of the flange portion 22 and the nut via the packing 3 disposed below the flange portion 22 and the packing disposed above the overflow adapter 4. ing.
Next, the overflow adapter 4 and the overflow channel are connected, and a pipe on the downstream side of the drain plug 2 is connected. And after attaching the operation part 7 to the edge of the tank body 1, construction is completed by attaching the raising / lowering part 61 to downstream piping.

  During the above construction, the stress caused by tightening the nut is applied to the corner portion 24 of the drain plug 2. However, in the present invention, since the corner portion 24 is formed in a curved surface shape, the stress is dispersed. . Further, since the corner portion 24 is formed in a curved shape, the corner portion 24 can have a thickness such that the thickness T2 can withstand the stress. Therefore, it becomes possible to prevent the member from being damaged during construction.

The drainage device pulls up the operation unit 7 so that the release wire slides in the outer tube to the operation unit 7 and rotates the lifting unit 61. With the rotation of the lifting / lowering part 61, the valve body 5 placed on the lifting / lowering part 61 rises, and the hot water in the tank body 1 can be discharged. As shown in FIG. 5, when the valve body 5 is in the raised state, the upper surface of the valve lid 51 is substantially flush with the bottom surface 14 of the tank body 1.
Further, when the valve body 5 is in the raised state, the release wire is slid toward the valve body 5 in the outer tube by pushing in the operation section 7, and the lift section 61 is rotated to rotate the valve body 5. Descends. At this time, the packing fitted around the valve lid 51 comes into contact with the periphery of the drain port 25, whereby hot water can be stored in the tank body 1.

Although the present embodiment is as described above, in the present invention, the corner portion 24 is formed in a curved shape, and the locking portion 23 is inclined upward, so that high strength is ensured and suitable drainage. It became possible to ensure performance.
Further, the packing 3 according to the present invention is configured to abut on the inner flange portion 13 and the side surface of the drain recess 12 to improve the water-stopping property. Here, since the packing 3 has the structure, a part thereof may be exposed to the outside of the flange portion 22, but in the present invention, the valve lid 51 covers the exposed portion of the packing 3, The user cannot visually check the packing 3 and can maintain high designability.

DESCRIPTION OF SYMBOLS 1 Tank body 11 Opening part 12 Drain recessed part 13 Inner collar part 14 Bottom face 2 Drain plug 21 Tubular part 22 Flange part 23 Locking part 24 Corner part 25 Drain port 3 Packing 4 Overflow adapter 41 Branch pipe part 5 Valve body 51 Valve cover 52 Valve shaft 53 Eye plate 6 Transmission unit 61 Lifting unit 7 Operation unit T Thickness

Claims (5)

An opening formed in the bottom of the tank body;
A drainage device having a drain plug attached to the opening to form a drainage port;
The drain plug has a cylindrical portion having a drain channel inside,
Extending toward the outside, having a flange portion that engages with the periphery of the opening,
A drainage device characterized in that a corner portion where the outer periphery of the tubular portion and the lower surface of the flange portion are formed in a curved shape. The tank body
A drain recess recessed in the bottom;
Provided with an inner flange protruding inward from the lower end of the drainage recess,
The opening is formed inside the inner collar,
The drainage device according to claim 1, wherein the drainage plug is locked to the inner flange portion. The flange portion has a locking portion that locks to the periphery of the opening on the lower surface thereof,
The drainage device according to claim 1 or 2, wherein the locking portion is inclined upward. The drain plug is
Equipped with a valve body that opens and closes the drain by moving up and down,
The said valve body has a cover part which covers a drain outlet, and the said cover part is continued with the bottom face of a tank body at the time of a valve body raise | lifting, It is any one of Claim 1 thru | or 3 characterized by the above-mentioned. The drainage device described. The flange portion is locked to the periphery of the opening through packing,
The drainage device according to any one of claims 1 to 4, wherein the lid portion covers the outer end of the packing from above when construction is completed.

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