JP6909451B2 - Connection structure of the tube - Google Patents

Description

The present invention is a connecting structure of a pipe body which is attached to various tank bodies such as a bathtub, a sink, and a wash basin to form a drain port.

As a conventional connection structure of a pipe body, as described in Patent Document 1, a drain plug as a pipe body attached to an opening formed at the bottom of the tank body, a mounting member for attaching the drain plug, and a water blocking member. The connection structure of the tube body consisting of the triangular packing is known. The drain plug is cylindrical and has a flange portion protruding outward from the upper end and a cylindrical portion that is hollow and has a drainage flow path inside, and is opened from the front side (upper surface) of the tank body. A tubular part is inserted through. Further, the tubular portion is provided with a window portion for merging the drainage from the overflow flow path described later, and a male screw portion is formed on the outer surface. The mounting member is an adapter member that is continuous with the overflow flow path and allows drainage to flow into the window portion. It has a branch pipe portion extending toward the surface, and the body portion is arranged outside the tubular portion. The triangular packing has a triangular shape in cross section and is an elastic member made of rubber or silicon, and the contact portion can be made watertight by contacting with a drain plug or a mounting member. An annular packing is arranged on the lower surface of the flange portion of the drain plug and the upper surface of the mounting member, respectively, and the drain plug and the mounting member sandwich the opening peripheral edge of the tank body via the packing.
In the connection structure of the pipe body, with the drain plug inserted through the opening of the tank body, the mounting member and the triangular packing are inserted into the tubular part from the back side of the tank body, and the nut member is inserted into the male screw portion of the tubular part. To be screwed into. At this time, the nut member pushes up the triangular packing and the mounting member by screwing, and the opening peripheral edge of the tank body is sandwiched between the flange portion of the drain plug and the upper end of the mounting member via the packing. At this time, the packings arranged below the flange portion and above the mounting member are crushed in the vertical direction.
Here, the mounting member has a tapered surface formed so that the lower end becomes wider toward the bottom. Therefore, when the nut member is screwed, the triangular packing is pressed upward against the lower end of the mounting member, and the tapered surface converts the upward stress into an inward (cylindrical portion) stress. It is also pressed against the outer circumference of the tubular part of the drain plug. As a result, the triangular packing can be in close contact with the mounting member and the drain plug (cylindrical portion), so that water leakage from the drain pipe can be prevented. Further, since the connection structure of the pipe body is formed by screwing the nut member, it is possible to attach the tank body to a tank body having a different thickness.
In the conventional pipe body connection structure, the packing arranged below the flange portion prevents the inflow of drainage from the outer circumference of the flange portion, and the packing arranged above the mounting member between the mounting member and the back surface of the tank body. Water leakage from the mounting member is prevented, and water leakage from between the mounting member and the tubular portion is prevented by a triangular packing arranged at the lower end of the mounting member.

In addition, as described in Patent Document 2, a connection structure of a pipe body relating to an operation portion of a drain plug device is known. The connection structure of the pipe body of Patent Document 2 includes an operation unit main body as a pipe body attached to an opening formed at the edge of the tank body, a nut member as an attachment member, and a packing as a water stop member. In the connection structure, as in Patent Document 1, the opening peripheral edge of the tank body is sandwiched between the flange portion and the mounting member formed on the operation portion main body via the packing.

JP-A-2010-127049 JP-A-2015-48682

As described above, in the connection structure of the pipe body described in Patent Document 1, the packings arranged in the lower part of the flange portion and the upper part of the mounting member are crushed by screwing the nut member, and the triangular packing is used as the mounting member and the drain plug. It has a structure that can be pressed. That is, it is necessary to crush the packing at three places by screwing the nut member, and further, the triangular packing needs to apply stress to the side as well, so that a large stress is required for screwing. It was difficult to screw the nut member to an appropriate position. Further, since a large stress is required for the screwing, the construction worker finishes the screwing before reaching the proper position, which causes a problem that water leakage occurs. Further, the triangular packing is sandwiched between the adapter member and the nut member due to the screwing, but at this time, the triangular packing is deformed outward or is bent by tightening more than a predetermined torque. , Drainage may enter between the triangular packing and the drain plug, causing water leakage.

Further, in the connection structure described in Patent Document 2, the water blocking member has a ring shape and is only sandwiched between the lower surface of the flange portion and the upper surface of the tank body edge portion, but until it becomes watertight by screwing. It is necessary to crush the water stop member. Therefore, as in Patent Document 1, the construction worker ends the screwing before reaching the proper position, which causes a problem of water leakage.

In view of the above problems, the present invention has an object of improving workability and preventing water leakage from a drainage pipe.

The present invention according to claim 1 for solving the above problems includes an opening formed in a tank body and an opening.
A flange portion projecting outward, a hollow tubular portion, and a pipe body provided with a water blocking member attached to the outer periphery of the tubular portion.
It is a connection structure of a pipe body that is arranged on the back side of the tank body and is composed of a mounting member that sandwiches the opening peripheral edge of the tank body with a flange portion.
The tubular part is provided with a fixing means for fixing the mounting member on the outer circumference.
The mounting member is a pipe body connecting structure characterized by having a water blocking member and a contact portion that slidably abuts while maintaining a watertight state on the inner circumference.

The present invention according to claim 2 is the connection structure of the pipe body according to claim 1, wherein the pipe body is a drain plug attached to the bottom of the tank body to form a drain port.

According to the third aspect of the present invention, the tank body is provided with an overflow flow path for discharging overflow water, the mounting member is connected to the overflow flow path, and the overflow water is merged with the flow path from the drain port. The connection structure of a pipe body according to claim 2, wherein the member is a member.

According to the fourth aspect of the present invention, there is an opening formed in the tank body, a flange portion projecting outward, a hollow tubular portion, and a water blocking member attached to the outer periphery of the tubular portion. It is a connection structure of a pipe body provided with a pipe body and a mounting member arranged on the back side of the tank body and sandwiching the opening peripheral edge of the tank body with a flange portion, and the mounting member is a water blocking member on the inner circumference. The pipe body has a contact portion to be abutted, and the pipe body is an operation portion attached to the edge portion of the tank body, which is a connection structure of the pipe body.

In the present invention, since the water blocking member has a structure that maintains watertightness by contacting the pipe body and the side surface of the mounting member, it is possible for the operator to reduce the stress required during construction. The mounting member referred to here does not mean only a member directly related to screwing or the like like a nut member. Further, the mounting member does not necessarily have to directly sandwich the opening peripheral edge of the tank body with the flange portion, and may sandwich the opening peripheral edge of the tank body via packing or other members.

It is sectional drawing of the main part which shows the construction state of this invention. It is an exploded sectional view of this invention. (A) is a cross-sectional view showing a connection state by the connection structure of the pipe body of the present invention, and (b) is an enlarged view of part A of FIG. 3 (a). (A) is a cross-sectional view showing a connection state by the connection structure of the pipe body of the present invention, and (b) is an enlarged view of part A of FIG. 4 (a). It is sectional drawing which shows the 2nd Embodiment of this invention. It is sectional drawing which shows the 2nd Embodiment of this invention. It is sectional drawing which shows the other embodiment.

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

Hereinafter, the present invention will be described with reference to FIGS. 1 to 4. The tank body 1 according to the first embodiment is a wash bowl.

As shown in FIG. 1, the tank body 1 has a cross-sectional view box shape, and openings 3 are formed on the bottom surface 2 and the side surface, and the drain plug 5 is arranged in the opening 3 on the bottom surface 2 side. A drainage port 6 is formed. On the other hand, an overflow elbow 4 is arranged in the opening 3 on the side surface side, and functions as an overflow drain port for discharging the overflow water when hot water is stored in the tank body 1 to a height equal to or higher than a predetermined height.

As shown in FIGS. 1 and 2, the drain plug 5 is a pipe body in the present embodiment, is a drain pipe forming a drainage flow path inside, and is composed of a flange portion 51 and a tubular portion 52. The drain plug 5 forms a drain port 6 for draining the drainage in the tank body 1 in a state of being arranged in the opening 3 formed in the bottom surface 2 of the tank body 1.
The flange portion 51 projects outward from the upper end of the drain plug 5 over the entire circumference, and is in contact with the peripheral edge of the opening 3 formed on the bottom surface 2 via a ring-shaped packing arranged below. ..
The tubular portion 52 is hollow and has a cylindrical shape having a drainage flow path inside, and is inserted into an opening 3 formed on the bottom surface 2 from above the tank body 1. Further, the tubular portion 52 is formed with a window portion 53, a recess 54, and a male screw portion from above. The window portion 53 is opened toward the side, and as shown in FIG. 3, the body portion 81 of the mounting member 8 is arranged on the outside of the window portion 53 when the construction is completed. The recess 54 is an annular groove formed below the window portion 53 and above the male screw portion, and the water blocking member 7 is arranged in the recess 54.
The water blocking member 7 is an elastic body made of rubber, silicon, or the like, has a circular cross-sectional view, and is in watertight contact with the mounting member 8 described later on the outer peripheral surface. The male screw portion is a connecting portion formed up to the lower end of the tubular portion 52, and the female screw portion of the nut member 10 is screwed.

The mounting member 8 has a body portion 81 arranged around the drain plug 5, and a branch pipe portion 83 formed on the side surface of the body portion 81, and is an adapter that allows drainage from the overflow flow path to flow into the window portion 53. It is a member.
The body portion 81 has a cylindrical shape having a diameter larger than that of the drain plug 5, a packing having a substantially U-shaped cross section is arranged at the upper end, and a contact portion 82 is formed at the lower end. The contact portion 82 is a cylindrical portion having an inner diameter substantially the same as the outer diameter of the drain plug 5 in the recess 54 of the drain plug 5, and extends below the lower end of the body portion 81, that is, in the axial direction of the drain plug 5. Has been done. As shown in FIG. 3, when the mounting member 8 is inserted into the drain plug 5, the contact portion 82 is in contact with the watertight member 7 in a watertight manner, and the water stop member 7 is maintained in the watertight state. It can slide in the vertical direction. That is, the inner surface of the contact portion 82 has the same diameter and is smooth from the upper end to the lower end, and no matter what height position the water blocking member 7 is in contact with, the space between the outer circumference of the tubular portion 52 and the contact portion 82 is It is possible to make it watertight.
The branch pipe portion 83 has a cylindrical shape extending outward from the side of the body portion 81, and the end of the flexible pipe 9 continuous from the overflow elbow 4 is connected to the drainage from the overflow drain port. Joins the drainage flow path from the drainage port 6 via the mounting member 8.
In the mounting member 8, the nut member 10 is arranged at the lower end of the contact portion 82, and when the drain plug 5 and the nut member 10 are screwed together, the mounting member 8 is pushed up by the nut member 10.

The first embodiment of the present invention is constructed as follows.
First, the tubular portion 52 of the drain plug 5 is inserted into the opening 3 from the front side (upper surface) of the tank body 1. At this time, a packing is arranged below the flange portion 51, and the flange portion 51 comes into contact with the peripheral edge of the opening 3 formed on the bottom surface 2 of the tank body 1 via the packing. Next, the mounting member 8 is inserted into the tubular portion 52 of the drain plug 5 from the back side of the tank body 1, and the nut member 10 and the male screw portion are screwed together. At this time, the mounting member 8 is pushed up by the nut member 10, and the upper end of the mounting member 8 comes into contact with the peripheral edge of the opening 3 via the packing arranged above the mounting member 8. Further, the water blocking member 7 comes into contact with the contact portion 82. When the nut member 10 is further screwed, the peripheral edge of the opening 3 on the bottom surface 2 is sandwiched between the flange portion 51 and the mounting member 8 via the packing. At this time, the packings arranged below the flange portion 51 and above the mounting member 8 are crushed in the vertical direction. Further, when the mounting member 8 is pushed up by the nut member 10, the water blocking member 7 in contact with the abutting portion 82 slides downward of the abutting portion 82 while maintaining a watertight state.
Next, one end of the overflow elbow 4 and the flexible pipe 9 is connected, and the other end is connected to the branch pipe portion 83 of the mounting member 8.
Then, by connecting the downstream side pipe (not shown) to the downstream side of the drain plug 5, the construction of the present embodiment is completed.

When the above construction is completed, the packing arranged below the flange portion 51 prevents the inflow of drainage from the outer periphery of the flange portion 51, and the packing arranged above the mounting member 8 between the mounting member 8 and the back surface of the tank body 1. The water leakage from the mounting member 8 and the tubular portion 52 is prevented by the water blocking member 7.

As described above, the present invention does not use triangular packing as in the conventional example, and has a structure in which the water blocking member 7 abuts on the side surfaces of the drain plug 5 and the mounting member 8 to maintain watertightness. .. Therefore, it is possible to reduce the stress required when the operator tightens the nut member 10 at the time of construction. Further, as shown in FIG. 4, when the water stop member 7 and the contact portion 82 are attached to tank bodies having different thicknesses, the contact positions of the water stop member 7 and the contact portion 82 are displaced, but in the present invention, the contact portion 82 is a water stop member. Since No. 7 is slidable while maintaining a watertight state, it can be applied to various tank bodies.

The second embodiment of the present invention will be described below.

As shown in FIGS. 5 and 6, the tank body 1 has a cross-sectional view box shape, an opening 3 is formed in the bottom surface 2, and a drain plug 5 is arranged in the opening 3, so that the drain port 6 is provided. It is formed.

The drain plug 5 is a pipe body in the present embodiment, is a drain pipe forming a drain flow path inside, and is composed of a flange portion 51 and a tubular portion 52. Here, the drain plug 5 is arranged in the opening 3 formed in the bottom surface 2 of the tank body 1 to form a drain port 6 for draining the drainage in the tank body 1.
The flange portion 51 projects outward from the upper end of the drain plug 5 over the entire circumference, and is in contact with the peripheral edge of the opening 3 formed on the bottom surface 2 via a ring-shaped packing arranged below. ..
The tubular portion 52 is hollow and has a cylindrical shape having a drainage flow path inside, and is inserted into an opening 3 formed on the bottom surface 2 from above the tank body 1. Further, the tubular portion 52 is formed with a recess 54 and a male screw portion from above. The recess 54 is an annular groove formed above the male screw portion, and the water blocking member 7 is arranged in the recess 54. The water blocking member 7 is an elastic body made of rubber, silicon, or the like, has a circular cross-sectional view, and is in watertight contact with the mounting member 8 described later on the outer peripheral surface. The male screw portion is a connecting portion formed up to the lower end of the tubular portion 52, and the female screw portion of the mounting member 8 is screwed.

The mounting member 8 is a hollow and cylindrical drainage pipe arranged downstream of the drain plug 5, has a flange portion 84 extending from the outside of the upper end to the outside, and has a contact portion 82 and a female screw inside. The part is formed. In a state where the female screw portion of the mounting member 8 is screwed with the male screw portion of the drain plug 5, the flange portion 84 is in contact with the back surface of the tank body 1, and the flange portion 84 and the flange portion 51 bring the flange portion 84 to the bottom surface 2. It sandwiches the formed 3 peripheral edges of the opening. The contact portion 82 is a cylindrical portion formed at the upper end of the inner circumference of the mounting member 8 and having an inner diameter substantially the same as the outer diameter of the drain plug 5 in the recess 54 of the drain plug 5, and is below the upper end of the mounting member 8. That is, it extends in the axial direction of the drain plug 5. When the mounting member 8 is screwed into the drain plug 5, the contact portion 82 is in contact with the watertight member 7 in a watertight manner, and the water stop member 7 can slide in the vertical direction while maintaining the watertight state. It has become. That is, the inner surface of the abutting portion 82 has the same diameter and is smooth from the upper end to the lower end, and no matter where the water blocking member 7 abuts, the outer periphery of the tubular portion 52 and the abutting portion 82 are in a watertight state. It is possible to.

The second embodiment of the present invention is constructed as follows.
First, the tubular portion 52 of the drain plug 5 is inserted into the opening 3 formed on the bottom surface of the tank body 1. At this time, a packing is arranged below the flange portion 51, and the flange portion 51 comes into contact with the peripheral edge of the opening 3 formed on the bottom surface 2 of the tank body 1 via the packing. Next, the male screw portion of the drain plug 5 and the female screw portion of the mounting member 8 are screwed from the back side of the tank body 1. At this time, the mounting member 8 is raised by screwing, and the collar portion 84 comes into contact with the lower surface of the tank body 1. Further, the water blocking member 7 comes into contact with the contact portion 82. When the screwing is further advanced, the peripheral edge of the opening 3 on the bottom surface 2 is sandwiched between the flange portion 51 and the mounting member 8 via the packing. At this time, the packing arranged below the flange portion 51 is crushed in the vertical direction. Further, as the mounting member 8 rises with screwing, the water blocking member 7 in contact with the contact portion 82 slides downward of the contact portion 82 while maintaining a watertight state.
Then, by connecting the downstream side pipe (not shown) to the downstream side of the mounting member 8, the construction of the present embodiment is completed.

When the above construction is completed, the packing arranged below the flange portion 51 prevents the inflow of drainage from the outer circumference of the flange portion 51, and the water blocking member 7 prevents water leakage from between the mounting member 8 and the tubular portion 52. I'm out.

As described above, the present invention does not use triangular packing as in the conventional example, and has a structure in which the water blocking member 7 abuts on the side surfaces of the drain plug 5 and the mounting member 8 to maintain watertightness. .. Therefore, it is possible to reduce the stress required when the operator tightens the nut member 10 at the time of construction. Further, as shown in FIG. 6, when attached to tank bodies having different thicknesses, the contact position between the water blocking member 7 and the contact portion 82 is displaced, but in the present invention, the contact portion 82 is water blocking. Since the member 7 is slidable while maintaining a watertight state, it can be applied to various tank bodies.

The second embodiment of the present invention is as described above, but the present invention is not limited to the shapes of the first and second embodiments described above, and various modifications are made without departing from the gist of the invention. Is also good. For example, in the first embodiment and the second embodiment, the tank body is a washbasin, but it may be a sink, a bathtub, or the like. Further, as shown in FIG. 7, the connection structure of the present invention may be adopted for the operation unit 11 of the drain plug device attached to the opening 3 formed at the edge of the tank body 1. In the other embodiment, the operation unit 11 is composed of an operation unit main body 12 and a lock mechanism 13, and the pipe body is an operation unit main body 12 attached to an opening 3 formed at an edge portion of the tank body 1. The operation unit 11 is provided with a button unit inside, and when the user applies a push operation to the button unit, a valve body (not shown) moves up and down to open and close the drain port. The lock mechanism 13 is a known holding mechanism that locks the raised state of the valve body. Further, the mounting member 8 is a nut member that sandwiches the peripheral edge of the opening 3 with the operation unit main body 12.
In the other embodiment, the flange portion 51 formed at the upper end of the operation portion main body 12 and the flange portion 84 formed at the upper end of the mounting member 8 sandwich the peripheral edge of the opening 3 via the packing. Then, the water stop member 7 arranged in the recess 54 formed on the outer surface of the operation unit main body 12 is in watertight contact with the contact portion 82 formed on the inner side surface of the mounting member 8.

1 Tank body 2 Bottom 3 Opening 4 Overflow elbow 5 Drain plug 51 Flange part 52 Cylindrical part 53 Window part 54 Recession 6 Drainage port 7 Water stop member 8 Mounting member 81 Body part 82 Contact part 83 Branch pipe part 84 Flange part 9 Flexible pipe 10 Nut member 11 Operation unit 12 Operation unit body 13 Lock mechanism

Claims (4)

The opening formed in the tank body and
A flange portion projecting outward, a hollow tubular portion, and a pipe body provided with a water blocking member attached to the outer periphery of the tubular portion.
It is a connection structure of a pipe body that is arranged on the back side of the tank body and is composed of a mounting member that sandwiches the opening peripheral edge of the tank body with a flange portion.
The tubular part is provided with a fixing means for fixing the mounting member on the outer circumference.
The attachment member is a tubular body connection structure characterized by having a water blocking member and a contact portion that slidably abuts while maintaining a watertight state on the inner circumference. The connection structure for a pipe body according to claim 1, wherein the pipe body is a drain plug attached to the bottom of the tank body to form a drain port. The tank body is provided with an overflow flow path for draining overflow water.
The connection structure for a pipe body according to claim 1 or 2, wherein the mounting member is an adapter member that is connected to an overflow flow path and allows overflow water to join the flow path from the drain port. The opening formed in the tank body and
A flange portion projecting outward, a hollow tubular portion, and a pipe body provided with a water blocking member attached to the outer periphery of the tubular portion.
It is a connection structure of a pipe body that is arranged on the back side of the tank body and is composed of a mounting member that sandwiches the opening peripheral edge of the tank body with a flange portion.
The mounting member is provided with a contact portion that comes into contact with the water blocking member on the inner circumference.
The pipe body is a connecting structure of the pipe body, characterized in that the pipe body is an operation unit attached to the edge portion of the tank body.

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