JP3143357B2 - Kitchen stand drain branch pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus such as a dishwasher or the like incorporated in a kitchen table, into a drain pipe through which drainage from a drain trap of a kitchen table sink such as an existing system kitchen, a sink, and a sink is passed. To a drain branch pipe for connecting a drain hose.

[0002]

2. Description of the Related Art Conventionally, in an apartment house, a rigid polyvinyl chloride connection pipe is provided between a drain trap of a sink of a kitchen stand such as a sink and a drain pipe of a house (house drain pipe) provided below the sink. (For example, a rigid polyvinyl chloride pipe of JIS standard VP40) is often used to form a drain from a sink of a kitchen stand.

[0003] When a device such as a dishwasher is used in a kitchen table as described above, a drain branch pipe is installed in the middle of a drain pipe such as the connection pipe or house drain pipe. The drain hose of the equipment was connected to the branch pipe. Such a drain branch pipe is disclosed in, for example, Japanese Patent Application Laid-Open No. 6-299579 (A47L15 / 42).

[0004] In particular, when the drainage pipe is cut in the middle and a drainage branch pipe is installed in the meantime, a part of the drainage pipe that replaces the drainage pipe must be cut off.

[0005]

However, in the prior art, the installation person had to measure the cut size of the drain pipe using a measure or the like every time the installation work was performed, which was extremely troublesome. . In addition, there is a possibility that the cut may be performed at an incorrect size due to a measurement error.

The present invention relates to a drainage branch pipe for a kitchen stand, and solves such a problem.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a kitchen table, in which a drain pipe through which a drain from a drain trap of a sink of the kitchen table is passed is cut at an intermediate portion and installed between the drain pipe. A drain comprising a pipe body connecting pipes separated by cutting, and a branch pipe branched from the pipe body and connected to a drain hose of equipment such as a dishwasher incorporated in the kitchen stand. In the branch pipe, display means is provided on the outer peripheral surface of the pipe main body for displaying the size of a cut portion of the drain pipe to be removed to install the drain branch pipe.

Further, in the configuration of the first aspect, the display means is a cut line engraved along the circumferential direction at intervals by the size of the cut portion.

Further, in the structure of the first aspect, the display means is a stamp for displaying the size of the cut portion numerically.

[0010]

[Function] The cut-out dimension of the drainage pipe at the time of installing the drainage branch pipe is clearly indicated by the display means, specifically, the cut line and the engraving of the numerical display. There is no need to measure the cut size of the tube using a measure or the like.

Further, the cut size of the drain pipe is indicated by a cut line, and the cut dimension can be easily marked simply by applying the drain branch pipe to the drain pipe and drawing along the cut line.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a sink incorporating a device requiring drainage. 1 is a sink main body, and 2 is a sink formed on the top plate portion of the sink main body 1 for washing foods and dishes. Reference numeral 3 denotes a dishwasher, which is a device that requires drainage and is incorporated in the sink main body 1. Reference numeral 4 denotes a drain trap for discharging sewage from the sink 2, which is provided on the bottom wall of the sink 2. The nominal diameter of the outlet 4a of the drain trap 4 is 40 according to the standard.

Reference numeral 5 denotes a connecting pipe made of hard vinyl chloride connected to the outlet 4a of the drain trap 4. The connecting pipe 5 has a nominal diameter 40 corresponding to the nominal diameter of the outlet 4a.
The pipe of IS standard VP40 is used. Reference numeral 6 denotes a house drain pipe made of hard vinyl chloride introduced into the main body from the back of the sink main body 1 and is connected to the connection pipe 5 through a commercially available joint 7. Here, a VP50 pipe having a nominal diameter of 50 (outer diameter of 60 mm, wall thickness of 4.5 mm) is used as the house drain pipe 6. Therefore, the commercially available joint 7
The nominal diameter of the receiving part with the connecting pipe 5 is 40, and the nominal diameter of the receiving part with the house drainage pipe 6 is 50.

The commercially available joint 7 has a connecting pipe 5
The nominal diameter of the receptacle part is 40 and the nominal diameter of the receptacle part with the house drain pipe 6 is 40. The house drain pipe has a nominal diameter of 40 (outer diameter 48 mm, wall thickness 4.0 mm). ) May be used.

Reference numeral 8 denotes a drainage branch pipe according to an embodiment of the present invention, which is obtained by cutting the house drainage pipe 6 at an intermediate portion and installing the cut-off pipe. This drain branch pipe 8 is for connecting the drain hose 21 of the dishwasher to the house drain pipe 6.

The detailed structure of the drain branch pipe 8 according to the embodiment of the present invention will be described below with reference to FIGS. Hereinafter, the drainage branch pipe 8 of the embodiment of the present invention is referred to as a drainage branch pipe of the present application.

The drainage branch pipe 8 of the present application includes a pipe main body 9 connecting the drainage pipes separated by cutting at an intermediate portion of the house drainage pipe 6, and a branch pipe 10 branched from the center of the pipe main body 9.
It is composed of The drain branch pipe 8 is made of hard vinyl chloride, and integrally forms the pipe main body 9 and the branch pipe 10.

The inner diameters of the receptacles 11, 11 at both ends of the pipe main body 9, to which the separated drain pipes are connected, are adapted to fit the cut ends of the drain pipes. That is, the outer diameter (60 mm) of the house drainage pipe 6 is made equal.
In practice, considering the variation in the outer diameter of the house drain pipe 6,
With a slight taper, the outer diameter of the house drain pipe 6
It is slightly smaller at the root and slightly larger at the tip (e.g., root: 59.75 mm, tip: 60.35 m
m). The inner diameter of the central portion 12 of the pipe body 9 is equal to the inner diameter (51 mm) of the house drainage pipe 6.

By the way, 13 and 13 are the above-mentioned respective receiving portions 1
Cutting of the house drain pipe 6 which is engraved along the circumferential direction on the outer peripheral surfaces of the receptacles 11 and 11 at the positions of the bottom surfaces 11a and 11a of the receptacles 11 and 11 and is installed to install the drainage branch pipe 8 of the present invention. This is a cut line (display means) indicating a dimension.
In other words, the cut line 13 has a dimension to be cut off, which is also indicated by small arrows 27 outside the line. The cutout size is obtained by subtracting the depth L1 of each of the receiving portions 11, 11 from the dimension L of the pipe main body shown in FIG. 5, that is, the dimension between the bottom surfaces 11a, 11a of each of the receiving portions 11, 11. L2.

In the space between the two cut lines 13, 13, a mark 14 (display means) “VP50 tube cut size 25 mm” indicating the cut size is shown by a numerical value. And, on the outer peripheral surface of each receiving portion 11, 11,
Furthermore, a large arrow 28 indicating the installation direction of the drainage branch pipe 8 of the present application.
… Is engraved.

The outer diameter of the tip of the branch pipe 10 is made equal to the inner diameter of the cap nut for mounting the drain hose 21 of the dishwasher 3. Further, a male screw part 15 (PF3 / 4 screw) is formed at this tip, and the drain hose 21 is directly attached to this tip with a mounting cap nut.

An annular spacer 16 serving as a fitting portion of the present invention is integrally formed on the outer periphery of the branch pipe 10 at the root side. The outer diameter of the annular spacer 16 is a predetermined commercially available one. It is the same as the inside diameter of the branch pipe of the drainage branch pipe. This commercially available drainage branch pipe corresponds to a house drainage pipe of VP40, and in this embodiment, a pipe having a nominal diameter of 40 × 30 is used. The drainage branch pipe having a nominal diameter of 40 × 30 has an inner diameter of about 48 m so that a receiving portion of the pipe body fits a pipe having a nominal diameter of 40.
m, and the branch pipe has an inner diameter of about 38 mm for fitting a pipe with a nominal diameter of 30. In addition, the branch pipe in this drainage branch pipe functions as a receiving part as a whole.

The outer diameter of the annular spacer 16 is
38 in accordance with the inside diameter of the commercially available drainage branch pipe, about 38 mm
mm. Further, on the outer peripheral surface of the annular spacer 16, three circumferential grooves 17 serving as recesses of the present invention are formed vertically and four circumferentially at four places, that is, a total of twelve. The peripheral grooves 17 are tapered so as to expand toward the opening side of the groove.

The outer diameter of the root portion 18 further closer to the root side than the annular spacer 16 is equal to the outer diameter of the distal end portion of the branch pipe 10. And this root part 18 is made into the cutting part at the time of cutting the branch pipe 10. That is, when the branch pipe 10 is cut off, the root 1 is cut using a tool such as a saw.
8 is cut. Further, the outer diameter of the root portion 18 is smaller than the outlet of the drainage from the branch pipe to the pipe main body in the commercially available branch drainage pipe.

The branch pipe 10 is slightly inclined to the upstream side of the pipe body 9, and an edge 20 of the branch pipe 10 at the outlet 19 of the drainage to the pipe body 9, which is located downstream of the pipe body 9.
Is on. Thus, the drainage from the branch pipe 10 smoothly flows downstream of the pipe main body 9, that is, in the drainage direction.

When the dishwasher 3 is incorporated in the sink 1 in this manner, the installer of the present invention is concerned with the case that the house drainage pipe introduced into the sink 1 is a house drainage pipe 6 of VP50 (nominal diameter 50). The drain branch pipe 8 is used as it is.
FIG. 6 shows an installation mode at this time.

The installer cuts the house drainage pipe 6 using a tool such as a saw, and cuts off a portion that is no longer necessary for installing the drainage branch pipe 8 of the present application. That is,
The pipe main body 9 of the drainage branch pipe 8 of the present application is applied to the house drainage pipe 6, and a cutout dimension is marked on the house drainage pipe 6 in accordance with the cut lines 13, 13. Then, cutting is performed according to the line, and a portion between the lines is cut off.

By checking the cut portion along the cut lines 13 and 13 of the drainage branch pipe 8 of the present application, it can be confirmed whether or not the cut dimensions are substantially the same.
In addition, since the cutout size is clearly indicated by the engraved mark 14, the cutout size can be confirmed with a measure or the like before cutting.
Further, a dimension numerically indicated by the stamp 14 may be measured from the beginning with a measure or the like, and the dimension may be cut off.

Next, an adhesive is applied to the cut end of each cut drain pipe, and this cut end is connected to the receiving portion 1 of the pipe main body 9.
It fits in 1 and 11 and is adhesively fixed.

Then, the drain hose 21 of the dishwasher 3 is attached directly to the branch pipe 10 by attaching the cap nut 22 for attaching the drain hose 21 to the male thread portion 15 at the tip of the branch pipe 10.

On the other hand, if the house drain pipe introduced into the sink 1 is the house drain pipe 6a of VP40 (nominal diameter 40), a predetermined commercially available drain branch pipe 23 (nominal diameter 40 × 30) corresponding thereto is used. And, the branch pipe 10 of the drainage branch pipe 8 of the present application is used. FIG. 7 shows an installation mode at this time.

First, the installer cuts the branch pipe 10 of the drainage branch pipe 8 of the present application at the root 18 using a tool.

Next, an adhesive is applied to the outer peripheral surface 16a and the root-side end surface 16b of the annular spacer 16 in the separated branch pipe 10 of the drainage branch pipe 8 of the present invention. The annular spacer 16 is connected to the branch pipe 24 of the commercially available drain branch pipe 23.
It is fitted and fixed inside. At this time, the annular spacer 16 is pushed until the end face 16b on the root side contacts the peripheral edge 25a of the outlet 25 of the commercially available drainage branch pipe 23. At this time, the cut end face 18a at the root 18 is
Fits within.

Next, the house drainage pipe 6a is also cut using a tool.
Cut out the dimensions that are no longer needed to install 3. Then, an adhesive is applied to the cut end face of each cut drain pipe, and the cut end faces are fitted and fixed to both sides of the pipe main body 26 of the commercially available drain branch pipe 23.

Then, the drain hose 21 from the dishwasher 3 is directly attached to the tip of the branch pipe 10 of the drain branch pipe 8 of the present application attached to the branch pipe 24 of the commercially available drain branch pipe 23.

As described above, according to the structure of the drain branch pipe 8 of the embodiment of the present invention, two types of house drain pipes 6, 6 having a nominal diameter of 40 (outer diameter of 48 mm) or a nominal diameter of 50 (outer diameter of 60 mm).
For a, only one type of drainage branch pipe needs to be manufactured.

Therefore, the production cost can be reduced as compared with the case where two types of drainage branch pipes are prepared.
In addition, since it is sufficient to manufacture only the devices to be installed, efficient manufacturing can be performed.

When an adhesive is applied to the outer peripheral surface 16a of the annular spacer 16 in the branch pipe 10 of the drainage branch pipe 8 of the present invention, the adhesive is applied to the peripheral grooves 17 provided on the outer peripheral surface 16a. After entering and fitting to the commercially available drain branch pipe 23, the adhesive in the circumferential grooves 17 flows out to the bonding surface side.
Even if there is a slight gap in the bonding surface due to processing accuracy or the like, the adhesive flowing out from the circumferential grooves 17 enters into the gap, thereby increasing the adhesive force between the branch pipes 10 and 24 and simultaneously increasing both branches. The gap between the tubes 10, 24 is filled. Since the peripheral grooves 17 are tapered, the adhesive easily flows out.

In addition, the outer diameter of the root portion 18 of the branch pipe 10 of the drainage branch pipe 8 of the present invention is made smaller than the diameter of the outlet 25 for drainage from the branch pipe 24 to the pipe body 26 of the commercially available drainage branch pipe 23. And the annular spacer 16 is a commercially available drain branch pipe 2
3 is fitted into the branch pipe 24, the cut end face 18a of the root portion 18 fits in the outlet 25, and the annular spacer 16
Of the outlet 25 abuts on the peripheral edge 25 a of the outlet 25. Thus, even if the cut end face 18a is not cut cleanly, the peripheral face 25b of the outlet 25 comes into contact with the clean end face 16b of the annular spacer. Assured adhesion can be performed, and generation of a gap can be suppressed.

Therefore, the separated branch pipe 10 of the drainage branch pipe 8 of the present invention can be securely fixed to the branch pipe 24 of the commercially available drainage branch pipe 23, and water leaks from the gap between both branch pipes 10, 24. Can be prevented.

Further, when the drainage branch pipe 8 of the present invention is installed, the cut-out dimension of the house drainage pipes 6 and 6a is
Since it is clearly indicated by 13 and the engraved mark 14 of the numerical display, in the drain branch pipe, there is no need to measure between the bottom surfaces 11a and 11a of the receptacles 11 and 11 using a measure or the like to obtain a cut size. In addition, there is no possibility that wrong dimensions are cut off due to measurement errors.

In particular, the cut-out dimensions of the house drainage pipes 6 and 6a are indicated by cut lines 13 and 13, and the drainage branch pipe 8 of the present application is shown.
To the house drain pipe 6, and cut lines 13, 13
Since the cutout size can be easily marked simply by drawing a line in accordance with, the trouble of marking the cutout size using a measure or the like is not required.

Therefore, the installation work of the drain branch pipe can be performed easily and reliably.

[0045]

According to the configuration of the drainage branch pipe of the kitchen stand of the present invention, the cut-out dimension of the drainage pipe when installing the drainage branch pipe is as follows.
Since it is clearly indicated by the display means, specifically the cut line and the engraving of the numerical display, the installation staff does not need to measure the cut size of the drain pipe using a measure every time the installation work, which is troublesome. In addition, no erroneous dimensions are cut off due to measurement errors.

In particular, the cut size of the drainage pipe is indicated by a cut line, and the cutout dimension can be easily marked simply by applying the drainage branch pipe to the drainage pipe and drawing along the cut line. There is no need to mark the cut size using a measure or the like.

Therefore, the installation work of the drain branch pipe can be easily and reliably performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sink incorporating a device that requires drainage.

FIG. 2 is a front view of a drain branch pipe showing details of a drain branch pipe of a kitchen table according to an embodiment of the present invention.

FIG. 3 is a side view of the drain branch pipe.

FIG. 4 is a plan view of a drain branch pipe.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view showing a state in which a drainage branch pipe of a kitchen stand is installed on a house drainpipe having a nominal diameter of 50 according to one embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a state of installation on a house drain pipe having a nominal diameter of 40.

[Explanation of symbols]

 Reference Signs List 8 drainage branch pipe 9 pipe main body 10 branch pipe 13 cut line (display means) 14 stamp (display means)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03C 1/12 F16L 1 / 02,41 / 08

Claims (3)

(57) [Claims] 1. A drain pipe which is introduced into a kitchen stand and through which drainage from a drain trap of a sink of the kitchen stand is cut at an intermediate portion, and is installed therebetween, and is separated by cutting. A drain branch pipe composed of a pipe main body connecting each pipe and a branch pipe branching from the pipe main body and connecting a drain hose of a device such as a dishwasher and the like incorporated in the kitchen stand; A drainage branch pipe for a kitchen stand, wherein an indicator is provided on an outer peripheral surface of the drainage pipe to indicate a size of a cut portion of the drainage pipe to be removed for installation of the drainage branch pipe. 2. The drainage branch pipe for a kitchen stand according to claim 1, wherein the display means is a cut line cut along a circumferential direction at intervals of a size of the cut portion. 3. The drainage branch pipe of a kitchen stand according to claim 2, wherein the display means is an engraved mark for displaying the size of the cut portion numerically.