JPH10147972A - Drain basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To visually estimate the position and diameter of circular holes bored on a side wall and improve the boring workability of the circular holes by forming positioning recesses at constant intervals on the vertical center line on the outer face of the side wall. SOLUTION: Multiple lugs 13 are provided at constant intervals nearly in the horizontal direction from the outer face of a side wall 2 on the vertical center line of the side wall 2 between a lower semicircular rib 8 protruded in the horizontal direction from the outer face of the side wall 2 nearly at the middle of the side wall 2 of a drain basin D and an upper horizontal rib 4 horizontally protruded from the outer face of the side wall 2 at the lower section of a flange 3. When circular holes are bored on the side wall 2 to connect a drain pipe to the drain basin D, the tip of the positioning pin of a hole saw is inserted into the positioning recesses at the tips of the lugs 13, the positioning pin of the hole saw is stabilized without being slid on the surface of the side wall 2, and accurate circular holes can be quickly bored. The lugs 13 are arranged on the vertical center line of the side wall 2, the position and diameter of the circular holes bored on the side wall 2 can be accurately specified visually, and the boring workability of the circular holes is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage basin buried in the ground for storing domestic wastewater and the like.

[0002]

2. Description of the Related Art Conventionally, a drainage basin integrally formed of a synthetic resin having a bottom portion and a side wall has been known.

[0003]

Conventionally, a circular hole for connecting a drain pipe is formed on the side wall of the above-mentioned drainage basin using a hole saw or the like. Due to the absence of such a hole, there is a problem that the workability of drilling the circular hole is poor, such as taking a long time to obtain a dimension for drilling the circular hole at a predetermined position.

[0004] Further, since the radius formed at the corner formed by the side wall and the bottom of the drainage basin is small, there is a problem that it is difficult to clean mud, dust and the like accumulated in this portion.

An object of the present invention is to solve the problems of the above-mentioned conventional drainage basin and to provide a drainage basin to which a U-shaped groove or the like can be connected in addition to a drainage pipe.

[0006]

According to the present invention, in order to achieve the above-mentioned object, first, positioning recesses are formed at regular intervals on a vertical center line of an outer surface of a side wall. Second, a projection is provided on the outer surface of the side wall, and a positioning recess is formed at the tip of the projection. Third, the positioning recess is formed directly on the outer surface of the side wall, Fourth, a substantially U-shaped contour made up of a plurality of ribs is formed on the outer surface of the side wall. Fifth,
An upwardly curved radius is formed at a peripheral edge along four sides of the bottom.

FIG. 1 is a perspective view of a drainage basin and a lid of the present invention, FIG. 2 is a sectional view taken along a vertical center line of a side wall of the drainage basin of the present invention, and FIG. FIG. 3, which is an enlarged view of a broken part, FIG. 4, which is a front view of a drainage basin of the present invention,
An embodiment of the present invention will be described with reference to FIG. 5 which is a front view of a drainage basin of the present invention and FIG. 6 which is an enlarged view similar to FIG. 3 of a drainage basin of another embodiment of the present invention. The present invention is not limited to the embodiment unless it exceeds the gist of the present invention.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS D is a box-shaped drainage basin having a substantially rectangular planar shape and an open top. 1 is a peripheral portion 1 along four sides
a is the bottom of the drainage basin D in which the radius is formed by curving upward, and the upper end 1b of the peripheral edge 1a which curves upward of the bottom 1
, A side wall 2 which is inclined outward toward the upper side is provided upright. The radius of the curved peripheral portion 1a is:
In consideration of the cleaning workability of this part, it depends on the size of the drainage basin D, but is preferably 20 mm or more, and more preferably, 70 to 90 mm. Reference numeral 3 denotes a flange extending horizontally from the upper end of the drainage basin D to the outside, and an upper horizontal rib 4 projecting horizontally from the outer surface of the side wall 2 is formed below the flange 3. 3 and upper horizontal rib 4
And vertical connecting ribs 5 are formed at appropriate intervals. 6 is a lower horizontal rib protruding horizontally from the outer surface of the side wall 2 near the lower end of the drainage basin D.

Reference numeral 7 denotes a pair of vertical ribs projecting from the outer surface of the side wall 2 so as to sandwich the four corners of the drainage basin D, respectively. Extending to Numeral 8 denotes lower half semicircular ribs protruding horizontally from the outer surface of the side wall 2 substantially in the middle of the side wall 2, and 9 denotes both ends of the semicircular rib 8 formed on each side wall 2. It is an intermediate horizontal rib connecting the parts. Reference numeral 10 denotes an inclined connection rib for connecting both ends of the semicircular rib 8 and an appropriate position of the vertical rib 7, and reference numeral 11 denotes a pair of projections provided so as to sandwich the four corners of the drainage basin D, respectively. Horizontal connecting ribs for connecting the vertical ribs 7 of FIG. Reference numeral 12 denotes a pair of vertical ribs extending from the lower surface of the semicircular rib 8 to the lower end of the drainage basin D.

Reference numeral 13 denotes a portion extending from the outer surface of the side wall 2 between the semicircular rib 8 and the upper horizontal rib 4 on a vertical center line of each side wall 2 (indicated by a dashed line L in FIG. 4). There are a plurality of protrusions projecting in a substantially horizontal direction, and a predetermined number of protrusions are formed at regular intervals, for example, at intervals of 20 mm. At the tip of the projection 13, a dent 13 a that is concave in a mortar shape for positioning is formed. The protrusion 13 is a cylinder,
Various shapes such as a prism, a truncated cone, and a truncated pyramid can be used. Note that R is a known lid for covering the opening of the drainage basin D.

When a circular hole is formed in the side wall 2 to connect a drain pipe made of vinyl chloride or the like with a desired diameter to the drainage basin D, a positioning pin is provided at the center of a cylindrical cutter. By inserting the tip of the positioning pin of the hole saw into the positioning recess 13 a formed in the projection 13, the positioning pin of the hole saw is stable without sliding on the surface of the side wall 2. However, an accurate circular hole can be quickly formed.

Since the projections 13 having the positioning recesses 13a formed at regular intervals along the vertical center line of each side wall 2, the positions of the circular holes formed in the side wall 2 and Since the diameter can be accurately specified, the workability of forming a circular hole is improved. For example, the drainage basin D in which the protrusions 13 are formed at intervals of 20 mm on the vertical center line of the side wall 2
When a circular hole having a diameter of 80 mm is formed,
1. The positioning recess 1 of the lowermost projection 13 'shown in FIG.
If a positioning pin of a hole saw is inserted into 3a, a circular hole reaches visually to the third projection 13 from the bottom, and a correct circular hole can be formed symmetrically across the vertical center line of the side wall 2. Since it is possible, it is not necessary to use a ruler to find the vertical center line of the side wall 2 each time. Also, for example, when a circular hole of 200 mm is formed, the positioning pin of the hole saw may be inserted into the positioning recess 13a of the sixth projection 13 ″ from the bottom, and similarly, the vertical center line of the side wall 2 is found. No need.

When connecting drainage pipes to the two drainage basins D to be buried, the drainage pipes must be connected in order to improve the flow of drainage from one drainage basin D to the other drainage basin D. Some arrangements are made at an angle. In such a case as well, the projections 13 having the positioning recesses 13a formed at regular intervals along the vertical center line of the side wall 2 are provided. The bottom protrusion 1
A circular hole was drilled around 3 and the other drainage basin D
If a circular hole is drilled around the third projection 13 from the bottom,
The drain pipe can be easily and quickly disposed between the two drainage basins D in an inclined manner.

Further, as shown in FIG. 5, a pair of vertical ribs 7 formed on the same side wall 2, a pair of inclined connecting ribs 10 formed on the same side wall 2, and a pair of vertical ribs 7 formed on the same side wall 2. A substantially U-shaped contour 14 is formed by the horizontal line 14a connecting the pair of intermediate horizontal ribs 9. If the side wall 2 is cut along the contour 14, a hole for a U-shaped groove is formed. Therefore, unlike the conventional drainage basin, there is no need to dimension the hole for the U-shaped groove on the side wall of the drainage basin.
The operability of drilling the hole for the character groove is improved.

Further, a peripheral portion 1 along four sides of the bottom portion 1
Since a is curved upward and is formed in a,
Unlike a conventional drainage basin in which a bottom portion and a side wall form a corner of approximately 90 degrees, it is not difficult to clean mud or the like accumulated in this portion. Workability is improved.

As described above, the lower half semicircular rib 8 projecting horizontally from the outer surface of the side wall 2 is formed.
If the diameter of the semicircular rib 8 is made to match the diameter of the drainage pipe that is frequently used, there is an effect that the lower half of the connected drainage pipe is reinforced by the semicircular rib 8. Note that the protrusions 13 having the positioning recesses 13a need not necessarily be provided on all the side walls 2.

The embodiment shown in FIG. 6 shows a projection 13 having a mortar-shaped recess 13a for positioning.
Instead of projecting on the outer surface of the side wall 2, the positioning recess 13 a ′ is formed directly on the outer surface of the flat side wall 2 without projecting such a projection 13.

[0018]

Since the present invention is configured as described above, the following effects can be obtained.

Since the positioning recesses are formed at regular intervals along the vertical center line of the side wall, the position and diameter of the circular hole formed in the side wall can be accurately estimated visually. The workability of forming a circular hole is improved. Also,
Even when a drain pipe is inclined and disposed between two buried drain basins, the pipe work can be performed easily and quickly.

Since the positioning depression is formed, the tip of the positioning pin of the hole saw is stable without sliding on the surface of the side wall, and an accurate circular hole can be quickly formed.

Since a substantially U-shaped contour is formed on the side wall,
The workability of forming the hole for the U-shaped groove is improved.

Since the radius is formed by curving upward at the periphery along the four sides of the bottom, it is easy to clean mud and the like accumulated in the corner formed by the bottom and the side wall.

[Brief description of the drawings]

FIG. 1 is a perspective view of a drainage basin and a lid according to the present invention.

FIG. 2 is a sectional view taken along a vertical center line of a side wall of the drainage basin of the present invention.

FIG. 3 is an enlarged view of a portion surrounded by a chain line in FIG. 2;

FIG. 4 is a front view of the drainage basin of the present invention.

FIG. 5 is a front view of the drainage basin of the present invention.

FIG. 6 is an enlarged view similar to FIG. 3 of a drainage basin according to another embodiment of the present invention.

[Explanation of symbols]

 D ・ ・ ・ Drainage basin 1 ・ ・ ・ Bottom 2 ・ ・ ・ Side walls 13a, 13a '・ ・ ・ ・ Positioning Depression

Claims (5)

[Claims] 1. A drainage basin having positioning recesses formed at regular intervals on a vertical center line of an outer surface of a side wall. 2. The drainage basin according to claim 1, wherein a projection is provided on an outer surface of the side wall, and a positioning recess is formed at a tip of the projection. 3. The positioning recess is formed directly on the outer surface of the side wall.
The drainage basin according to claim 1, wherein the drainage basin is formed. 4. The drainage basin according to claim 1, wherein a substantially U-shaped contour comprising a plurality of ribs is formed on an outer surface of the side wall. 5. The drainage basin according to claim 1, wherein an upwardly curved radius is formed at a peripheral portion along four sides of the bottom portion.