JPH07222691A - Drain tapping system for bathtub - Google Patents

Abstract

PURPOSE:To provide a drain tapping system for a bathtub that can be fitted easily from one direction of the inside of a bathtub. CONSTITUTION:A rubber tap receptacle 20 is comprised of a linkage 22 linking an outer tube 21 mounted to a through hole 12 and an inner tube 23 arranged inside the outer tube in the upper part thereof, and a clearance formed by a space between the free ends of the lower parts of the outer tube 21 and the inner tube 23. The outer cylinder 21 has an elastic securer 24 that shrinks and goes through the through hole 12 at the bottom wall 11 of the bathtub and expands and goes at the underside of the bottom wall l 11 of the bathtub, and a groove 25 that is formed circularly around the outer tube 21 and extends outwards and an O ring fitted into the groove 25. A chain fixture 40 has an elastic claw 45 that shrinks and goes through a mounting hole 17 of the side wall 16 of the bathtub and expands at the outer surface of the side wall 16 of the bathtub.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage plug device for a bathtub, and more particularly, to a workability at the time of assembly.

[0002]

2. Description of the Related Art FIG. 15 is a cross-sectional view of a conventional bathtub drain plug device. Conventionally, as a drain plug device of this type of bathtub, as shown in FIG. 15, a through hole 12 penetrating a bottom wall 11 of the bathtub and a through hole 12 that is fixed in the through hole 12 and penetrates into and out of the bathtub. The rubber plug receiver 50 having the drain hole 51 and the rubber plug 56 closing the drain hole 51 of the rubber plug receiver 50 were provided.

In order to seal between the outer peripheral surface of the rubber plug receiver 50 and the upper surface of the bottom wall 11 of the bathtub, a rubber packing is used.
55 is mounted, and a rubber packing 54 for sealing between the outer peripheral surface of the rubber plug receiver 50 and the lower surface of the bottom wall 11 of the bathtub.
And a plastic packing 53 located below the plastic packing 53 for preventing the rubber packing 54 from twisting, and an end cap 52 for pressing the plastic packing 53 with a screw.

Further, in the conventional drain plug device for a bathtub, as shown in FIG. 15, a mounting hole 17 provided in a side wall 16 of the bathtub,
A chain fixing tool 60 fixed in the mounting hole 17 and provided with a ring 61 at one end facing the inside of the bath, and the chain fixing tool
One end is connected to the ring 61 of 60, and the drain hole 51 is connected to the other end.
And a chain 66 connected to a rubber stopper 56 for closing the.

The chain fixing device 60, as shown in FIG.
The other end is formed so as to project outward from the outer surface side of the side wall 16 of the bathtub, and the protruding other end is provided with the packing 6 in order from the bathtub side.
5, washer 64, spring washer 63 were arranged, and finally fixed by nut 62. (For example, real public Sho 50-4188, real public Sho 50-24923, real public Sho 50-24924
No., Jitsuko Sho-24-24922, etc.).

[0006]

However, in the above-described conventional bathtub drain plug device, when the rubber plug receiver 50 is fixed to the through hole 12 of the bottom wall 11 of the bathtub, the bottom wall 11 of the bathtub is provided with an upper surface side. After inserting the rubber plug receiver 50 into the through hole 12 and attaching the rubber packing 54 and the plastic packing 53 to the rubber plug receiver 50 protruding from the through hole 12 on the lower surface side of the bottom wall 11 of the bathtub, the end cap 52 had to tighten the screws to secure.

Further, a chain fixing tool is attached to the mounting hole 17 of the side wall 16 of the bathtub.
When fixing 60, use the chain fixing tool from the inner surface side of the side wall 16 of the bathtub.
60 must be inserted into the mounting hole 17, the packing 65, the washer 64 and the spring washer 63 must be attached to the chain fixing tool 60 protruding from the mounting hole 17 on the outer surface side of the side wall 16 of the bathtub, and the nut 62 must be fixed. There wasn't. Therefore,
Since both the rubber plug receiver 50 and the chain fixing tool 60 are fixed by screwing, there is a problem that the sealing property is not constant due to variations in the tightening force of the operator.

Further, when fixing the rubber plug receiver 50 and the chain fixing tool 60, since the work is performed from both inside and outside of the bath, there is a problem that workability at the time of assembly is not good. Further, as shown in FIG. 15, the rubber plug receiver 50 is tightened and fixed by the end cap 52, so that the rubber packing 54 and the rubber plug receiver 50 are not twisted at this time. Since it is necessary to sandwich the plastic packing 53, the number of parts is increased.

Also in the chain fixing device 60, as shown in FIG. 15, a spring washer 63 and a washer 64 are provided for tightening nuts from the outer surface of the bathtub and for preventing loosening.
Therefore, there is a problem in that the number of parts is increased because it is necessary to sandwich the parts. Therefore, the invention according to claim 1 has been made in view of the problems of the above-mentioned conventional technique, and the purpose thereof is to provide an elastic locking portion in the rubber stopper receiver to thereby provide It is intended to provide a drain plug device for a bathtub which can be mounted from one direction on the inner surface side and which can be easily mounted.

According to a second aspect of the present invention, by providing the chain fixing tool with the elastic claw portion, the chain fixing tool can be mounted from one direction on the inner surface side of the bathtub, and the mounting work is easy. Is to provide.

[0011]

The present invention is to achieve the above-mentioned object, and the contents thereof will be described below with reference to the embodiments shown in the drawings. The invention according to claim 1 is such that the rubber plug receiver (20) is elastically expanded to pass through the through hole (12) of the bottom wall (11) of the bathtub and to be expanded on the lower surface of the bottom wall (11) of the bathtub. It is characterized by having a locking portion (24).

According to a second aspect of the present invention, a chain fixing tool (40) is provided.
It is characterized in that it is provided with an elastic claw portion (45) whose diameter is reduced by passing through the attachment hole (17) of the side wall (16) of the bathtub and which is expanded on the outer surface of the side wall (16) of the bathtub.

[0013]

Therefore, according to the first aspect of the invention, the rubber plug receiver (20) is provided with the elastic locking portion (24). Therefore, if the rubber stopper receiver (20) is pushed into the through hole (12) penetrating the bottom wall (11) of the bathtub from the inside of the bathtub to the outside, the elastic engagement of the rubber stopper receiver (20) at the time of insertion. The stopper portion (24) is pressed by the inner peripheral surface of the through hole (12) to reduce its diameter. As a result, the rubber stopper receiver (20) is inserted into the through hole (12).

Further, a rubber stopper receiver (20) is further provided with a through hole (1
2) When it is pushed in and the elastic locking part (24) comes below the bottom surface of the bottom wall (11) of the bathtub, the elastic locking part (24) expands in diameter and the bottom wall
It is locked to the lower surface of (11). This allows the rubber stopper receiver (20)
Is prevented from coming off from the through hole (12) and is fixed to the bottom wall (11). According to the invention of claim 2, the chain fixing tool (40) is
An elastic claw portion (45) is provided. Therefore, when the chain fixing tool (40) is pushed into the attachment hole (17) provided in the side wall (16) of the bathtub from the inside to the outside of the bathtub, the elastic claws (4
5) is pressed by the inner peripheral surface of the mounting hole (17) to reduce the diameter. As a result, the chain fixing tool (40) is inserted into the mounting hole (17).

Further, the chain fixing tool (40) is further attached to the mounting hole (17).
When pushed inward and the elastic claw portion (45) comes outside the outer surface of the side wall (16) of the bathtub, the elastic claw portion (45) expands in diameter and is locked to the outer surface of the side wall (16). As a result, the chain fixing tool (40)
It is prevented from coming off from (17) and is fixed to the side wall (16).

[0016]

Embodiments of the present invention will now be specifically described with reference to the accompanying drawings. 1 to 14 show one embodiment of the present invention. FIG. 1 is a sectional view of a drain plug device of a bath, FIG. 2 is a front view of the drain plug device, and FIG. 3 is an exploded sectional view of the drain plug device. 4, FIG. 4 is an exploded perspective view thereof, FIG. 5 is a front view of the rubber stopper receiver, FIG. 6 is a vertical sectional view of the rubber stopper receiver, and FIG.
VII-VII line sectional view, FIG. 8 is a vertical sectional view of the elastic locking portion of the rubber stopper receiver, FIG. 9 is a front view of the rubber stopper, FIG. 10 is a vertical sectional view of a chain fixing tool, and FIG. 11 is a chain fixing 12 is a plan view of the rubber ring, FIG. 13 is a partially enlarged sectional view of the rubber ring, and FIG. 14 is a sectional view of the rubber ring.

In the figure, reference numeral 10 denotes a bathtub drain plug device. The bathtub drain plug device 10 is fixed to a bottom wall 11 and a side wall 16 of the bathtub as shown in FIG. As shown in FIG. 1, the drain plug device 10 for the bathtub has a through hole 12 penetrating the bottom wall 11 of the bath and a drain hole 26 fixed in the through hole 12 and penetrating inside and outside the bath. With a rubber plug receiver 20 and a rubber plug that closes a drain hole 26 of the rubber plug receiver 20.
It has 30 and.

Further, in the drain plug device, as shown in FIG. 1, a mounting hole 17 provided in the side wall 16 of the bathtub and the mounting hole
A chain fixing tool 40 that is fixed in 17 and has a ring 41 at one end facing the inside of the bathtub, and a ring of this chain fixing tool 40.
One end is connected to 41, and a chain 47 to which the rubber stopper 30 is connected is provided at the other end. As shown in FIG. 1, the through-hole 12 has a circular recess 13 that opens upward in the bottom wall 11 of the bathtub, and a cylindrical vertical portion that extends vertically downward from the peripheral edge of the circular recess 13. It is formed of a vertical portion 14 and an overhanging portion 15 extending horizontally from the lower end of the vertical portion 14 in the inner circumferential direction.

First, the rubber plug receiver 20 will be described in detail. As shown in FIG. 1, the rubber plug receiver 20 includes a cylindrical outer cylinder 21 mounted on the inner periphery of the through hole 12, an inner cylinder 23 arranged inside the outer cylinder 21, and an outer cylinder 21. Tube 21 and inner tube
At the top of 23, the connection 22 that connects them together
And a gap formed by a space between the lower free ends of the outer cylinder 21 and the inner cylinder 23.

As shown in FIGS. 1 and 5-8, the outer cylinder 21 is located below the outer cylinder 21 and passes through the through hole 12 of the bottom wall 11 of the bathtub by reducing the diameter of the through hole 12. An elastic locking portion 24 that expands in diameter on the lower surface and a concave groove 25 that is formed in an annular shape on the outer peripheral surface of the outer cylinder 21 and that faces the outer side are provided above the outer cylinder 21. The elastic locking portion 24 is, as shown in FIGS.
It is formed by hollowing out the outer cylinder 21 in a U shape, the lower end is connected to the lower part of the outer cylinder 21, and the upper end is a square shape with a free end,
The elastic piece 242 is formed to be elastically deformable in the radial direction, and the outer peripheral surface of the elastic piece 242 has an inclined surface 241 facing downward. As shown in FIG. 7, four elastic locking portions 24 are arranged in the circumferential direction of the outer cylinder 21 at 90 degree intervals.

As shown in FIGS. 1, 5 and 8, the recessed groove 25 is a collar portion 252 extending outwardly and annularly from the upper end of the outer sleeve 21, and below the collar portion 252. And an annular protruding portion 251 that annularly protrudes on the outer peripheral surface of the. Further, the concave groove 25 is the upper part of the outer cylinder 21 and is a through hole.
It is formed at a position facing the inner peripheral surface of the vertical portion 14 of 12 and an O-ring 27 made of an elastic material such as rubber is inserted therein. Since the diameter of the O-ring 27 is set larger than the depth of the concave groove 25, a part of the O-ring 27 projects outward from the outer surface of the annular protrusion 251.

The connecting portion 22 is, as shown in FIGS.
From the inner peripheral surface of the upper part of the outer cylinder 21 toward the inner center,
It is connected to the inner cylinder 23. The inner cylinder 23 is shown in FIGS.
As shown in FIG. 3, the outer cylinder 21 has a cylindrical shape having the same central axis, is continuously provided substantially vertically downward from the inner peripheral surface of the connecting portion 22, and extends to the substantially center of the outer cylinder 21. Inside,
A drain hole 26 is formed to penetrate the inside and outside of the bath.

At the lower end of the inner cylinder 23, as shown in FIGS. 1 and 6, a ring-shaped receiving portion 231 extending vertically inward from its peripheral edge is formed. Has
A disk-shaped plate 29 made of metal such as stainless steel is placed. As shown in FIG. 1, the outer diameter of the plate 29 is set to be smaller than the inner diameter of the inner cylinder 23 and larger than the inner diameter of the receiving portion 231, and is inserted into the inner cylinder 23 from above the drain hole. By placing the peripheral edge on the receiving portion 231, it is placed inside the rubber plug receiver 20. Further, although not shown, a large number of holes are formed in the center of the plate 29 to prevent foreign matter from flowing out and to adjust the amount of drainage when the drainage flows downward through the drainage holes. There is.

The plate 29 may be ring-shaped and has a wire mesh formed therein instead of the disk-shaped plate having a large number of holes. Next, rubber stopper 30
Will be described. As shown in FIGS. 1 and 9, the rubber stopper 30 is composed of a bottomed cylindrical rubber stopper main body and a rubber ring 38 which is annularly incorporated on the outer periphery of the main body portion 31.

As shown in FIGS. 1 and 9, the rubber plug main body is provided with a disc-shaped lid portion 32 and a cylindrical portion 33 that is vertically continuous from the outer peripheral edge of the lid portion 32. There is. The cylindrical portion 33 and the lid 32 are integrally formed of a resin such as ABS having an appropriate rigidity. As shown in FIGS. 1 and 9, a ring 34 is fixed in the center of the lid portion 32, and an engagement hole 35 having a circular opening is formed inside the ring 34. The chain 47 is engaged with 35.

The cylindrical portion 33, as shown in FIGS.
On the outer peripheral surface thereof, a rubber ring fixing groove 37 which is opened outwardly in a concave shape and in which the rubber ring 38 can be fixed, and a space surrounded by the inner peripheral surface thereof are formed in a cross shape at 90 degree intervals. A partition plate 36 that is evenly divided into individual pieces is provided. As shown in FIGS. 1, 2 and 12 to 14, the rubber ring 38 is made of an elastic material such as rubber and has a circular ring shape and an L-shaped cross section, and the rubber ring of the cylindrical portion 33. It is fixed inside the fixing groove 37. At the lower end of the inner circumference of the rubber ring 38, a protruding portion 381 having a semicircular cross-section protruding inward is formed.

Next, the chain fixing tool 40 will be described. As shown in FIGS. 1, 10, and 11, the chain fixing device 40 has a substantially cylindrical insertion portion 44 that is inserted into the attachment hole 17, and an annular protrusion from the upper end of the insertion portion 44 in the outer peripheral direction. It has a formed collar portion 43 and a ring 41 fixed to the center of the collar portion 43. As shown in FIGS. 10 and 11, the insertion portion 44 has an elastic claw at a lower portion thereof, which passes through the mounting hole 17 of the side wall 16 of the bathtub by reducing its diameter and expands on the outer surface of the side wall 16 of the bathtub. Department
Has 45.

As shown in FIGS. 1, 10, and 11, the elastic claw portion 45 has the outer periphery of the insertion portion 44 in the same direction so that the base end portion is located in the hole direction of the ring 41, that is, in the insertion direction. An elastic piece 452 which is formed by hollowing out in a U shape, has a lower end continuous with the lower portion of the insertion portion 44, and has a rectangular upper end with a free end and is elastically deformable in the radial direction. Piece 4
The outer peripheral surface of 52 has an inclined surface 451 facing downward.

The outer diameter of the insertion portion 44 excluding the elastic claw portion 45 is smaller than the inner diameter of the mounting hole 17 of the side wall 16, and the outer diameter of the elastic claw portion 45 is larger than the inner diameter of the mounting hole 17. Is set to. In addition, the elastic claw portion 45, the hole direction of the ring 41,
That is, it is formed by hollowing out in a U shape in the same direction so that the base end portion is located in the insertion direction so that the mold splitting direction of the mold at the time of molding can be the same.

Further, as shown in FIGS. 10 and 11, two elastic claw portions 45 are arranged at intervals of 180 degrees in the circumferential direction of the insertion portion 44. As shown in FIGS. 1, 10, and 11, the collar portion 43 has an annular shape, and its outer shape is set to be larger than the outer diameter of the mounting hole 17. The ring 41 is
As shown in FIGS. 1, 10, and 11, it is formed in the center of the collar portion 43, and an engaging hole 42 that is circularly opened is provided inside the ring 41.

Inside the engagement hole 42, the other end is a rubber plug 30.
One end of a chain 47 connected to the engagement hole 35 of the ring 34 is connected. Next, a procedure for using the bathtub drain device 10 having the above-described configuration will be described. First, as shown in FIG. 3, the O-ring 27 is fitted into the concave groove 25 of the outer cylinder 21 of the rubber plug receiver 20. Of course, the O-ring 27 may be attached in advance at the factory, not at the site. This allows
The assembly work on the site can be facilitated.

Next, the rubber plug receiver 20 is pushed into the through hole 12 from above the through hole 12 with the inclined surface 241 of the elastic locking portion 24 facing downward. Outer cylinder 21 excluding elastic locking part 24
Since the outer diameter of is set smaller than the inner diameter of the overhanging portion 15, the outer cylinder 21 is inserted into the through hole 12 as it is without being deformed. The inner diameter of the elastic locking portion 24 is set to be larger than the inner diameter of the overhang portion 15, and
An inclined surface 241 facing downward is formed on the elastic locking portion 24. Therefore, when the elastic locking portion 24 is inserted to a position where it abuts the overhanging portion 15, the inclined surface 241 of the elastic locking portion 24 is pushed by the inner peripheral surface of the overhanging portion 15 of the through hole 12, The elastic piece 242 elastically deforms inward. That is, as the rubber plug receiver 20 is pushed in, the elastic locking portion 24 of the outer cylinder 21 contracts. As a result, the rubber plug receiver 20 is inserted into the through hole 12.

Further, when the rubber plug receiver 20 is pushed below the through hole 12 and the inclined surface 241 of the elastic locking portion 24 comes below the lower surface of the protruding portion 15 of the bottom wall 11 of the bathtub, the protruding portion 15 is formed. The elastic locking portion 24, which has been elastically deformed in the inner peripheral direction by being pressed by the inner peripheral surface of the, expands in the outer peripheral direction due to its elastic restoring force, and is engaged with the lower surface of the bottom wall 11 as shown in FIG. Be stopped. As a result, the rubber plug receiver 20 has the annular projection 251 and the elastic locking portion 24 on the outer peripheral surface thereof.
The overhanging portion 15 of the bottom wall 11 enters in between, and is prevented from moving in the vertical direction, and is prevented from coming off from the through hole 12,
It is fixed to the bottom wall 11.

At this time, the O-ring 27 is provided inside the concave groove 25.
Is inserted, and the diameter of the O-ring 27 is set to be larger than the depth of the concave groove 25. Therefore, the bathtub bottom wall 11
The O-ring 27 is compressed and elastically deformed between the inner peripheral surface of the vertical portion 14 and the bottom surface of the concave groove 25 to seal between the bottom wall 11 of the bathtub and the rubber plug receiver 20. Next, as shown in FIG. 1, the rubber ring 38 is mounted inside the rubber ring fixing groove 37 of the rubber plug 30. Of course, the rubber ring 38 may be attached in advance at the time of factory shipment, not at the site. This allows
The assembly work on the site can be facilitated.

As shown in FIG. 1, the rubber stopper 30 has a double structure including a rubber ring 38 made of an elastic material and a main body 31 made of a rigid material such as resin. A rubber ring 38 was arranged on the to secure the hermeticity, and it was possible to use resin or the like for the other parts. Therefore, it is possible to use the rubber plug 30 with a color scheme that has not been possible with an elastic material such as rubber. As a result, it is possible to make it the same color as the wall surface of the bathtub, and it is possible to increase the degree of freedom in design.

Next, as shown in FIG. 1, the rubber plug 30 is pushed from above the drain hole 26 of the rubber plug receiver 20 toward the outside from the inside of the bath. Drain the rubber stopper 30 to the rubber stopper receiver 20.
When pushed into the inside of 26 from above, the inner peripheral surface of the inner cylinder 23 of the rubber stopper receiver 20 is pressed onto the upper portion of the outer peripheral surface of the rubber ring 38 mounted on the rubber stopper 30.

As a result, the cross-sectional shape of the rubber ring 38 is elastically deformed into a dogleg shape, and the outer peripheral surface of the rubber ring 38 and the inner peripheral surface of the inner cylinder 23 of the rubber plug receiver 20 are tightly adhered to each other to ensure sealing performance. Is improved. At that time, a protrusion 381 having a semicircular cross section is formed in the lower portion of the inner peripheral surface of the rubber ring 38 so as to protrude in the inner peripheral direction. Therefore, the sealing between the rubber ring 38 and the rubber plug 30 is not a surface contact but a line contact, and can be more reliably sealed than a surface contact where flatness uniformity or the like is required.

Next, as shown in FIG. 1, when the insertion portion 44 of the chain fixing tool 40 is pushed in from the inside of the bath to the outside of the mounting hole 17 provided in the side wall 16 of the bath, the elastic claw portion 45 is formed. Slope of
The 451 is pushed into the mounting hole 17 while facing the left side. The outer diameter of the insertion part 44 excluding the elastic locking part 24 is the mounting hole 17
Since it is set smaller than the inner diameter of the through hole 12
Inserted inside.

The outer diameter of the elastic claw portion 45 is set larger than the inner diameter of the mounting hole 17, and the elastic claw portion 45 is formed with an inclined surface 451 facing leftward. Therefore, when the elastic claw portion 45 is inserted to a position where it comes into contact with the inner peripheral surface of the mounting hole 17, the inclined surface 451 of the elastic claw portion 45 is pushed by the inner peripheral surface of the mounting hole 17, and the elastic piece 452 is formed. Elastically deforms inward. That is, when the insertion tool is pushed into the attachment hole 17, the elastic claw portion 45 of the insertion tool is pushed by the inner peripheral surface of the attachment hole 17 and the diameter thereof is reduced. As a result, the insertion tool is inserted into the mounting hole 17.

Further, the insertion portion 44 of the chain fixing tool 40 is attached to the mounting hole 17
When the slanted surface 451 of the elastic claw portion 45 is moved to the outside of the outer surface of the side wall 16 of the bathtub, the elastic claw that is elastically deformed in the inner peripheral direction is pushed by the inner peripheral surface of the mounting hole 17. The portion 45 expands in diameter in the outer peripheral direction due to its elastic restoring force, and is locked to the outer surface of the side wall 16 as shown in FIG. This allows the chain fastener
The side wall 16 of the 40 is prevented from moving in the left-right direction between the flange portion 43 and the elastic claw portion 45, is prevented from coming off the mounting hole 17, and is fixed to the side wall 16.

A packing 46 is inserted between the collar portion 43 of the chain fixing tool 40 and the side wall 16 as shown in FIG.
A seal is provided between 43 and the side wall 16. Finally, as shown in FIG. 1, a chain 47 for pulling out the rubber plug 30 is connected between the engagement hole 42 of the ring 41 of the chain fixing tool 40 and the engagement hole 35 of the ring 34 of the rubber plug 30. , Assembly is complete.

As described above, in the present embodiment, both the rubber plug receiver 20 and the chain fixing tool 40 are anchor type that can be attached from one direction instead of screwing when fixing to the bath. Has become. For this reason, it is possible to obtain a certain sealing property and fix it by simply pushing it from the inside of the bathtub, and it is possible to facilitate the on-site assembly work.

Further, parts such as nuts and washers which are conventionally required to prevent loosening from the outside of the bathtub are not necessary, and twisting of the rubber packing is prevented when tightening the rubber packing with the nut. Since no plastic packing is required for this, the number of parts can be greatly reduced. As a result, the manufacturing cost can be reduced and the assembling work on site can be further facilitated.

Although the present invention is used as a drain plug device for a bathtub as described above, it can also be used as a drain plug having drainage facilities such as a water tank, a washbasin, and a kitchen sink. In addition, in the present embodiment, the O-ring 27 is inserted into the concave groove 25, but the present invention is not limited to this, and only the O-ring 27 is preliminarily provided in the through-hole 12 with the overhanging portion 15. The same effect can be obtained by placing the rubber plug receiver 20 on the above, inserting the rubber plug receiver 20 from above, and sandwiching it between the overhanging portion 15 of the through hole 12 and the annular protruding portion 251 of the rubber plug receiver 20.

[0045]

Since the present invention is constituted as described above, it has the following effects. Claim 1
According to the above-described bathtub drain plug device, by providing the rubber stopper receiver with the elastic locking portion, it is possible to mount from one direction on the inner surface side of the bathtub, and the mounting work can be facilitated.

According to the drainage tap device of the second aspect of the present invention, by providing the chain fixing tool with the elastic claw portion, the chain fixing tool can be mounted from one direction on the inner surface side of the bathtub, and the mounting work is easy. Can be

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a drain plug device of a bath.

FIG. 2 is a front view of a drain plug device.

FIG. 3 is an exploded sectional view of a drain plug device.

FIG. 4 is an exploded perspective view of the drain plug device.

FIG. 5 is a front view showing a rubber plug receiver.

FIG. 6 is a vertical sectional view of a rubber plug receiver.

7 is a cross-sectional view taken along the line VII-VII of FIG.

FIG. 8 is a vertical sectional view showing an elastic locking portion of a rubber plug receiver.

FIG. 9 is a front view showing a rubber plug.

FIG. 10 is a vertical cross-sectional view showing a chain fixing tool.

FIG. 11 is a front view of the chain fixing tool.

FIG. 12 is a plan view showing a rubber ring.

FIG. 13 is a partially enlarged sectional view of a rubber ring.

FIG. 14 is a sectional view of a rubber ring.

FIG. 15 is a cross-sectional view showing a conventional drain plug device for a bath.

[Explanation of symbols]

 10 Bath drain plug device 11 Bottom wall 12 Through hole 16 Side wall 17 Mounting hole 21 Outer cylinder 22 Connecting part 23 Inner cylinder 24 Elastic locking part 25 Recessed groove 26 Drain hole 27 O-ring 30 Rubber stopper 38 Rubber ring 40 Chain fixing tool 41 ring 45 elastic claw 47 chain

Claims (2)

[Claims] 1. A rubber plug receiver having a through hole penetrating the bottom wall of the bathtub, a discharge hole fixed in the through hole and penetrating inside and outside the bathtub, and a discharge hole of the rubber plug receiver is closed. In the drain plug device for a bathtub having a rubber plug, the elastic stopper portion is provided in the rubber plug receiver, the through hole of the bottom wall of the bath being reduced in diameter, and the diameter being expanded on the lower surface of the bottom wall of the bath. A drainage tap device for a bathtub, characterized in that 2. A mounting hole provided in a side wall of the bathtub, a chain fixing tool fixed in the mounting hole, and provided with a ring at one end facing the inside of the bath, and one end of the ring of the chain fixing tool. In the drainage plug device of the bathtub, which has a chain connected to the other end and a rubber plug that blocks the drainage hole, a chain stopper is provided with a diameter reduced to a mounting hole of a side wall of the bathtub. By the way, a drain plug device for a bathtub, which is provided with an elastic claw portion whose diameter is expanded on the outer surface of the side wall of the bathtub.