JP4195348B2 - Drain pipe cleaning port - Google Patents

Description

  The present invention provides a cleaning port for drainage pipes such as drainage headers for merging drainage of toilets, bathrooms, kitchens, etc. of detached houses under the residential floor and draining them into public sewers, or in houses or high-rise buildings. The present invention relates to a drainage pipe cleaning port provided at an end of a drainage horizontal branch pipe.

As a drainage pipe cleaning port provided at the end of the drainage horizontal branch pipe in a high-rise building, a lid is provided at the end of the drainage horizontal branch pipe or at the upper short tube of the junction. At the time of cleaning, the lid is removed and a cleaning tool is inserted from the end of the drainage horizontal branch pipe or the short cylinder to clean the pipe line. As a lid, a blind flange is often attached to a flange provided on an end of a drainage horizontal branch pipe or a short cylinder with a bolt and nut via a packing.
However, the drainage horizontal branch pipe in the building is often installed in a narrow pit under the floor, and there is a defect that it is troublesome to remove the blind flange by releasing the connection with the bolt and nut.

Therefore, a drainage basin having a branch pipe inlet for merging drainage indoors or under the floor and draining it into the public sewer has been proposed that has an open / close lid that is detachably fitted to the cleaning port. (For example, refer to Patent Document 1).
In the drainage basin described in Patent Document 1, a female screw part 24 is provided in the cleaning port 21, and a male screw part 43 is provided in the opening / closing lid 31, and the opening / closing lid 31 can be freely fitted into and removed from the cleaning port 21 by screwing. (Figs. 6 and 7).

  In addition, a curved surface portion 36 that is the back surface portion of the opening / closing lid 31 is formed on the lower surface of the lid body 32. The curved surface portion 36 is smooth with the top portion 14 and the side portion opposite to the branch pipe inflow port 3 on the inner peripheral surface of the inflow port 4 and the outflow port 5 with the open / close lid 31 fitted to the cleaning port 21. It is continuous. In order to align the opening / closing lid 31 with respect to the bag main body 2 (cleaning port 21), a mark 25 as a first alignment means is engraved on the upper end of the cleaning port 21, which is an upper surface portion of the opening / closing lid 31. The upper surface 34 of the flange portion 33 is provided with a mark 35 as a second alignment means. By aligning the mark 35 with the mark 25, the opening / closing lid 31 can be positioned against the bag body 2 (cleaning port 21). Alignment is performed (paragraph numbers 19 and 20).

  The opening / closing lid 31 is provided with four cylindrical projections 41. When cleaning the inside of the drainage tub 1, a screwdriver is passed between the projections 41, and the screwdriver is attached to the opening / closing lid 31. By rotating along the circumferential direction, the screwing of the male screw portion 43 and the female screw portion 24 is loosened, and the opening / closing lid 31 is removed from the cleaning port 21 (paragraph number 31).

Japanese Unexamined Patent Publication No. 2003-138039 (see paragraph numbers 16 to 32, FIGS. 1, 3, 6, 7, and 8).

  In the drainage basin described in Patent Document 1, since the male screw portion 43 of the opening / closing lid 31 is screwed into the female screw portion 24 of the cleaning port 21 and the opening / closing lid 31 is attached to the cleaning port 21, vibration or the like The screwing may be loosened. If the open / close lid 31 is loosened, odor and drainage will leak outside. In addition, in order to make the inner surface smooth and continuous, the opening / closing lid 31 needs to be aligned and attached in a predetermined direction. For alignment, a mark 25 as a first alignment means engraved on the upper end of the cleaning port 21 is engraved on the upper surface portion 34 of the flange portion 33 which is the upper surface portion of the opening / closing lid 31. Although the mark 35 as the positioning means 2 is aligned, it must be aligned by visually observing the engraved mark, so that it is difficult to see in a narrow place or a dark place. There is a problem that it is possible that it cannot be matched.

  Further, since the curved surface portion 36 is formed integrally with the opening / closing lid 31 on the lower surface of the lid body 32, the opening / closing lid 31 is screwed into the cleaning port 21 at a position where the curved surface portion 36 is aligned. Will have to stop. Even if the female screw portion 24 of the cleaning port 21 and the male screw portion 43 of the opening / closing lid 31 are formed so as to be firmly screwed at a position where alignment is performed, the screw portion is repeatedly screwed or the screw portion is changed over time. When it is deformed, the screwing may be loosened, and there is a problem that the opening / closing lid 31 cannot be screwed tightly.

  It is an object of the present invention to provide a drainage pipe cleaning port that can firmly screw the lid to the cleaning port and can fix the screwed state in a tightly screwed state. To do.

According to the first aspect of the present invention, there is provided a cleaning port for a drainage pipe, in which a cleaning port is opened at an upper part of a horizontal drainage pipe, and a connecting cylinder having a larger inner diameter than the cleaning port is formed concentrically with the cleaning port. , receiving frame which internally fitted to the female screw on the inner surface is formed is attached to the connecting tube, the receiving frame lid is screwed with an external thread on the lower surface of the abutting lid to the receiving frame upper surface and the upper surface of the receiving frame And a drain pipe surface forming member having an outer diameter that can be fitted into the cleaning port is rotatably mounted inside the lid body, and the inner peripheral surface of the cleaning port and the drain pipe In a position facing the outer peripheral surface of the road surface forming member, there is formed an alignment means including at least a pair of concave and convex portions to be engaged with the concave and convex portions .

  According to a second aspect of the present invention, there is provided a drainage pipe cleaning port according to the present invention, wherein the drainage pipe cleaning port is annular between the upper surface of the receiving frame and the lower surface of the lid that contacts the upper surface of the receiving frame. Seal packing is provided.

  According to a third aspect of the present invention, there is provided a drainage pipe cleaning port according to the present invention, wherein the drainage pipe cleaning port according to the first or second aspect includes a female screw formed on the receiving frame and a male screw provided on the lid. Is a multi-threaded screw.

Further, the drain pipe cleaning port of the present invention according to claim 4 is the drain pipe cleaning port according to any one of claims 1 to 3, wherein the outer surface of the lid body is spaced in the circumferential direction. An arc-shaped gripping part is formed.

Further, the drain pipe cleaning port according to the present invention described in claim 5 is the drain pipe cleaning port according to any one of claims 1 to 4, wherein the horizontal drainage pipe is a drain header .

In the drain pipe cleaning port according to claim 1 , the cleaning port is opened at the upper part of the horizontal drainage pipe, and a connecting cylinder having an inner diameter larger than the cleaning port is formed concentrically with the cleaning port. A receiving frame fitted inside the connecting cylinder and having an internal thread formed on the inner surface is attached, and a lid having a male screw is screwed onto the receiving frame, and the upper surface of the receiving frame and the lower surface of the lid that comes into contact with the upper surface of the receiving frame, Since the concavity and convexity to be fitted at the screwing end position are formed, the convex part is deformed and screwed immediately before reaching the tightly screwed state, and the deformed convex part is fitted into the concave part at the screwing end position. As a result, the projecting part is restored and the concave and convex parts are fitted. Therefore, the lid is firmly screwed into the receiving frame, and the lid is fixed to the receiving frame by being concavo-convexly fixed, so that the lid does not loosen even if there is vibration.
Also, when the lid is screwed into the receiving frame, the screwing force suddenly increases with the deformation of the convex part, and then the concave and convex parts are fitted and stopped. Therefore, even in places where it is difficult to see in a narrow place or a dark place, excessive screwing or insufficient screwing does not occur.
Further, a drainage pipe surface forming member having an outer diameter that can be fitted into the cleaning port is rotatably mounted inside the lid, and is located at a position where the cleaning port inner peripheral surface and the outer peripheral surface of the drainage pipe surface forming member face each other. Alignment means consisting of at least a pair of recesses and projections to fit the recesses and projections is formed, so that the drainage pipe surface forming member attached to the lid is fitted with the recesses and projections provided on each Insert as you do. After that, if the lid is screwed to the receiving frame, the drain pipe surface forming member can be mounted in a predetermined direction in the cleaning port, and even if the lid is screwed to the receiving frame, the direction of mounting of the drain pipe surface forming member can be changed. It can be held in a certain direction, and the inner surface of the cleaning port can be made a continuous and smooth surface after being screwed firmly.

  Further, in the drain pipe cleaning port according to claim 2, since the annular seal packing is provided between the upper surface of the receiving frame and the lower surface of the lid that contacts the upper surface of the receiving frame, the receiving frame and the lid are Combined with the fact that it is not screwed and loosened, the odor and drainage in the drainage pipe will not leak.

  Further, in the drain pipe cleaning port according to claim 3, since the female screw formed on the receiving frame and the male screw provided on the lid are multi-threaded screws, the number of rotations of the lid is reduced. In addition to being able to be screwed, the deformation of the convex portion when fitting the concave and convex with the receiving frame can be limited to instantaneous deformation, and the lid can be easily screwed to the receiving frame.

Further, in the drain pipe cleaning port according to claim 4, since the arc-shaped gripping portion is formed on the outer surface of the lid body at intervals in the circumferential direction, the gripping portion can be gripped and screwed together, It can also be screwed with a strong force with a screwdriver or the like between the arc-shaped gripping portions.

  FIG. 1 is a longitudinal sectional view showing an embodiment in which the drain pipe cleaning port of the present invention is applied to a pipe joint as a drain header, FIG. 2 shows details of a receiving frame in FIG. 1, (A) is a plan view, (B) is a sectional view taken along line BB in FIG. (A), (C) is a side view in FIG. (A), FIG. 3 shows details of the lid in FIG. 1, (A) is a plan view, ( B) is a front view partially showing a cross section, (C) is a bottom view in FIG. (A), FIG. 4 shows details of the drainage pipe surface forming member in FIG. 1, (A) is a plan view, (B) Is a front view partially showing in cross section, and (C) is a side view in FIG.

The drain pipe cleaning port 1 shown in FIG. 1 is an example in which a cleaning port 61 is provided on the upper side of a pipe joint 6 as a drain header.
In FIG. 1, the drainage pipe cleaning port 1 has a cleaning port 61 opened on the upper side of a pipe joint 6 having a branch pipe inlet 62 on a side surface, and the lid 4 is attached to the cleaning port 61. A connection tube 2 having an inner diameter larger than that of the cleaning port 61 is provided concentrically with the cleaning port 61 on the outer peripheral surface of the cleaning port 61, and the receiving frame 3 is adhered to the connection tube 2 with an adhesive. Installed.
A lid 4 is screwed onto the receiving frame 3 and a drain pipe surface forming member 5 having an outer diameter that can be fitted into the cleaning port 61 is rotatably mounted inside the lid 4. . A grip 44 is formed on the outer surface of the lid 4.

  As shown in FIG. 2, the receiving frame 3 has an internal thread 31 formed on the inner surface, and has a flange 32 at the top, and the flange 32 is attached in contact with the upper end of the connecting cylinder 2. The female screw 31 is a double thread provided with notches 31a at three locations in the circumferential direction. The notch 31a is provided in order to simplify the mold structure for forming the female screw 31 when the receiving frame 3 is formed of a synthetic resin injection-molded product. For example, when the female screw is formed by secondary processing, etc. Of course, a continuous female screw may be used. The female screw 31 may be a triple thread.

  On the upper surface of the collar 32 of the receiving frame 3, concave portions 32a are formed at two locations on the outer peripheral edge on the diagonal line, and circumferential grooves 32b are provided on the inner peripheral side. The concave portion 32a is for engaging with a convex portion 42a provided on the lower surface of the collar 42 of the lid 4 described later, and the groove 32b is for mounting the annular seal packing 33.

The lid 4 is screwed into the receiving frame 3 and is attached. As shown in FIG. 3, a male screw 41 is formed on the outer surface, a collar 42 is provided on the outer periphery, and a gap 45 is provided on the outer surface in the circumferential direction. Thus, an arc-shaped grip 44 is formed.
The male screw 41 is screwed into the female screw 31 of the receiving frame 3, and is a double thread having four notches 41a as shown. The reason why the four notches 41a are different from the three notches 31a of the receiving frame 3 is that the notches are not screwed at the same time when they are screwed together, and can be smoothly screwed together. It is to do. This is because the lid 4 may come out even if the lid 4 is screwed to the receiving frame 3.

On the outer peripheral edge of the lower surface of the collar 42 of the lid body 4, spherical shell-shaped convex portions 42 a are formed at two diagonal positions. This convex part 42a engages the concave part 32a formed in the upper surface of the collar 32 of the receiving frame 3 by screwing the cover body 42 to the receiving frame 3 and at the terminal position of the screwing.
The concave portion 32a of the receiving frame 3 and the convex portion 42a of the lid body 4 are formed at positions where the male screw 41 of the lid body 4 is tightly screwed with the female screw 31 of the receiving frame 3 so as to be fitted. At the end position, the convex portion 42a is deformed and screwed, and is fitted into the concave portion 32a to complete the screwing. When the convex portion 42a that has been compressed and deformed is fitted into the concave portion 32a, the convex portion 42a is restored and engaged with the concave and convex portions, and is attached without loosening the screwed state.

The grip 44 formed on the outer surface of the lid 4 has an arc shape so that it can be easily gripped with bare hands and the lid 4 can be easily rotated. Furthermore, if the protrusions 44a are provided outward at both end portions of the arc-shaped gripping portion 44, gripping becomes easier.
Further, the interval 45 is provided between the arc-shaped gripping portions 44. The interval 45 can be rotated with a tool such as a screwdriver interposed therebetween, and the lid 4 can be easily attached to and removed from the receiving frame 3. To do.

  A drainage pipe surface forming member 5 having an outer diameter that can be fitted into the cleaning port 61 is rotatably mounted inside the lid body 4. Reference numeral 43 denotes a locking projection for rotatably mounting the drain pipe path surface forming member 5, which supports an annular protrusion provided on the outer periphery of the upper end portion of the drain pipe path surface forming member 5 to be rotatable. Therefore, at least two locations are provided on the diagonal line. If the drain pipe surface forming member 5 can be mounted, it is preferably provided at three or more equal intervals.

Next, an example of the drain pipe path surface forming member 5 will be described with reference to FIG.
The drainage pipe surface forming member 5 has an outer diameter that can be fitted into the cleaning port 61, and is used for smoothly connecting the inner surface of the cleaning port 61 with the inner surface of the pipe joint 6. Since it is cylindrical, the drain pipe surface forming member 5 has a curved surface. Accordingly, when the drain pipe surface forming member 5 is attached to the cleaning port 61, it is necessary to attach the drain pipe surface forming member 5 in a certain direction.

In the example shown in the figure, a flange 51 is formed at the lower end of the drain pipe surface forming member 5 that fits into the cleaning port 61, and recesses 52 are formed at two locations on the diagonal of the flange, and the inside of the lid 4 is formed at the outer periphery of the upper end. An annular ridge 53 is formed to be rotatably mounted on the lens. The two concave portions 52 are provided in a direction coinciding with the pipe axis direction of the pipe joint 6.
On the other hand, convex portions 61 a are formed in the cleaning port 61 at two locations in the direction that coincides with the tube axis direction of the pipe joint 6, and the concave portion 52 of the drain pipe path surface forming member 5 is uneven on the convex portion 61 a of the cleaning port 61. It is made to fit, and it is set as the alignment means which mounts the drain pipe surface forming member 5 in the predetermined direction by this recessed part and convex part.

Next, an operation method for opening and closing the drain pipe cleaning port 1 configured as described above will be described.
When it is necessary to check or clean the drain pipe, the lid 4 is removed. In this case, when the gripping portion 44 of the lid body 4 is gripped with bare hands and the screwing of the lid body 4 cannot be released, a screwdriver may be inserted into the gap 45 of the gripping portion 44 and rotated.
When the screw body is released and the lid body 4 is removed, the drain pipe surface forming member 5 can be removed at the same time, and the cleaning port 61 is opened. The inside of the drainage pipe can be cleaned by inspecting the inside from the cleaning port 61 or inserting a cleaning tool.

When the lid body 4 is screwed, the concave portion 52 of the drain pipe surface forming member 5 mounted inside the lid body 4 is fitted into the convex portion 61 a of the cleaning port 61, and the lid body 4 is attached to the receiving frame 3. It only has to be screwed together. Even if the lid 4 is rotated for screwing, the drain pipe surface forming member 5 is rotated because the concave portion 52 is engaged with the convex portion 61a of the cleaning port 61 and locked. The drain pipe inner surface can be attached smoothly and continuously.
When the lid body 4 is screwed, the force that the convex portion 42a formed on the collar 42 of the lid body 4 comes into contact with the upper surface of the collar 32 of the receiving frame 3 near the end position of the screwing is suddenly increased. To increase. After this position, the convex portion 42 a is fitted into the concave portion 32 a formed on the upper surface of the flange 32 of the receiving frame 3. When the convex portion 42a is fitted into the concave portion 32a, the convex portion 42a is instantaneously restored and the screwing operation is stopped. Therefore, it is possible to determine the end of the screwing with the sensation of a screwing hand. Further, since the screwed state is fixed by the concave-convex fitting, the tightly screwed state can be maintained and the lid body 4 does not loosen, so that drainage and odor do not leak from the drain pipe.

  In the above embodiment, the concave portion 32a of the receiving frame 3 and the convex portion 42a of the lid body 4 are formed at two diagonal positions. However, in the present invention, the number of the concave portions 32a is three or more. There may be. Further, a convex portion may be formed on the receiving frame 3 and a concave portion may be formed on the lid body 4.

  In addition, the alignment means may be formed such that at least a pair of concave and convex portions fits in a concave-convex manner, but it is preferable that a plurality of pairs of alignment means are provided substantially evenly on the circumference. In addition, a recess may be provided in the cleaning port 61, and a protrusion may be provided in the flange 51 of the drain pipe surface forming member 5.

Moreover, although the said embodiment is an example applied to the cleaning port 61 provided in the upper part side of the pipe joint 6 as a drainage header, the cleaning port for drainage pipes of this invention is the edge of a drainage horizontal branch pipe. The lid may be attached to the part.
In this case, the frame body 3 is attached to the end of the drainage horizontal branch pipe, the lid body 4 is screwed into the frame body 3, and the inner surface of the lid body 4 that abuts the outer surface of the receiving frame 3 and the outer surface of the receiving frame 3. What is necessary is just to have the unevenness | corrugation fitted in the side surface at the screwing end position. However, for the purpose of covering the end portion of the drainage horizontal branch pipe, the drainage pipe surface forming member is not required for the lid body 4, and the inner surface side of the lid body may be a concave portion or a hollow portion. .
Moreover, although the edge part of a drainage horizontal branch pipe may face the horizontal direction, it may be made to bend an edge part upwards and to attach a cover body from upper direction.

It is a longitudinal cross-sectional view which shows embodiment which applied the cleaning port for drainage pipes of this invention to the pipe joint as a header for drainage. The details of the receiving frame in FIG. 1 are shown, (A) is a plan view, (B) is a sectional view taken along line BB in FIG. (A), and (C) is a side view in FIG. The details of the lid in FIG. 1 are shown, (A) is a plan view, (B) is a front view partially showing a cross section, and (C) is a bottom view in FIG. 1A and 1B show details of the drain pipe surface forming member in FIG. 1, FIG. 1B is a plan view, FIG. 1B is a front view partially showing a section, and FIG. 1C is a side view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drain pipe cleaning port 2 Connection cylinder 3 Receiving frame 31 Female screw 32 ３２ 32a Concave 33 Annular seal packing 4 Lid 41 Male screw 42 鍔 42a Convex part 44 Grasping part 5 Drain pipe line surface forming member 51 ５２ 52 Concave part 6 Pipe joint 61 Cleaning Mouth 61a Convex

Claims (5)

A cleaning port is opened at the upper part of the horizontal drainage pipe, a connecting cylinder having a larger inner diameter than the cleaning port is formed concentrically with the cleaning port, and a female screw is formed on the inner surface by being fitted inside the connecting cylinder. A receiving frame is attached, and a lid body having an external thread is screwed to the receiving frame,
On the upper surface of the receiving frame and the lower surface of the lid that comes into contact with the upper surface of the receiving frame, an unevenness that is fitted at the screwing end position is formed,
A drainage pipe surface forming member having an outer diameter that can be fitted into the cleaning port is rotatably mounted inside the lid, and there are irregularities at positions facing the cleaning port inner peripheral surface and the outer peripheral surface of the drainage pipe path forming member. A drainage pipe cleaning port characterized in that an alignment means comprising at least a pair of concave and convex portions to be fitted is formed . The drainage pipe cleaning port according to claim 1, wherein an annular seal packing is provided between the upper surface of the receiving frame and the lower surface of the lid that contacts the upper surface of the receiving frame. The drain pipe cleaning port according to claim 1 or 2, wherein a female screw formed on the receiving frame and a male screw provided on the lid are multi-threaded screws. The drainage pipe cleaning port according to any one of claims 1 to 3, wherein an arc-shaped grip portion is formed on the outer surface of the lid body at intervals in the circumferential direction . The drainage pipe cleaning port according to any one of claims 1 to 4, wherein the horizontal drainage pipe is a drainage header .

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