JPH0737767Y2 - Auxiliary tool for perforating synthetic resin pipes with ribs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an auxiliary tool for perforating a ribbed synthetic resin tube. More specifically, since a branch pipe is connected to a ribbed synthetic resin pipe having an annular or spiral rib on the outer peripheral surface of the pipe, a ribbed synthetic resin pipe used when a through hole is formed in the ribbed synthetic resin pipe The present invention relates to a drilling aid.

[Conventional technology]

Conventionally, ribbed synthetic resin pipes having an annular or spiral rib on the outer peripheral surface have been used as gas pipes and sewer pipes. When drilling a through hole for connecting a branch pipe to this ribbed synthetic resin pipe, decide the approximate drilling position, mark it with a marker etc., and drill with a hole saw or jigsaw. is there.

[Problems to be solved by the device]

When a rib-equipped synthetic resin pipe is perforated by determining an approximate perforation position as in the conventional case, the through hole is displaced from the center,
The branch connection cannot be made accurately. Further, since it cannot be accurately marked with a marker or the like, there is a problem that the size of the through hole becomes different, especially when the hole is drilled using a jigsaw.

The present invention has been made in view of the conventional problems as described above, and a ribbed synthetic resin pipe capable of detecting an accurate drilling angle and drilling a through hole to a predetermined size. The present invention also provides an assisting device for perforation.

[Means for Solving the Problems]

The perforation assisting tool according to the present invention is used to provide a through hole in a rib-equipped synthetic resin pipe for connecting a branch pipe to the rib-equipped synthetic resin pipe having an annular or spiral rib on the outer peripheral surface of the pipe. The plate-like body having an arcuate cross section is provided with a protrusion on the lower surface to fit the rib. Further, an angle detecting level is attached to the upper surface of the plate-like body, and a small hole for centering and a plurality of arc-shaped through holes centering on the small hole are provided at substantially the center of the plate-like body. It is characterized by being installed in a row.

[Function of device]

In the present invention, the plate-shaped ridges are fitted to the ribs of the ribbed synthetic resin pipe, and the plate-shaped body is brought into contact with the outer peripheral surface of the ribbed synthetic resin pipe. The perforation angle is determined by rotating the resin tube in the circumferential direction and using the level detector for angle detection. After that, a drill is inserted into the small hole of the plate-like member to form a positioning hole for perforation, the plate-like member is separated from the ribbed synthetic resin pipe, and the hole is perforated by a hole saw. When a jigsaw is used, the jig is inserted from the arc-shaped through hole while the plate-shaped body is in contact with the ribbed synthetic resin tube, and the jig is drilled along the arc-shaped through hole. Alternatively, a mark is attached to the ribbed synthetic resin pipe along the arc-shaped through hole with a marker or the like, the plate-shaped body is separated from the ribbed synthetic resin pipe, and then a hole is bored along the mark.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view, and FIG.
The figure is a plan view, and FIG. 3 is a cross-sectional view in use.

The present invention is used for providing a through hole in a rib-equipped synthetic resin pipe for connecting a branch pipe to the rib-equipped synthetic resin pipe having an annular or spiral rib on the outer peripheral surface of the pipe. Further, as shown in FIG. 2, a ridge 2 is provided on the lower surface of the plate-like body 1 having an arcuate cross section. The plate-shaped body 1 is made of, for example, a synthetic resin such as vinyl chloride, and the protrusion 2 is integrally provided on the lower surface thereof. Further, the plate-like body 1 and the ridge 2 have an arcuate cross-section that matches the cross-sectional shape of the ribbed synthetic resin pipe, and the plate-like body 1 can abut the outer peripheral surface of the ribbed synthetic resin pipe. It can be fitted between the ribs of a ribbed synthetic resin pipe. An angle detecting level 3 is attached to the upper surface of the plate-shaped body, and a small hole 4 and a plurality of arc-shaped through holes 5 centering on the small hole 4 are provided so as to penetrate therethrough. The angle detecting level 3 is attached along one side edge of the upper surface of the plate-shaped body 1.
While rotating the synthetic resin pipe with ribs in the circumferential direction, the accurate angle can be detected. The small hole 4 is provided so as to penetrate through the central portion of the plate-shaped body 1 and the ridges 2, and when a hole saw (not shown) is used, a positioning hole for the hole can be formed. In addition, two arc-shaped through holes 5 are shown as being provided so as to penetrate through the small hole 4 at opposite positions. A jigsaw (not shown) along the arc-shaped through hole 5
It is possible to perforate or mark the ribbed synthetic resin pipe with a marker or the like.

As shown in FIG. 3, the punching aid of the present invention as described above is provided with the ribs 7 of the plate-like body 1 and the ribs 7 of the ribbed synthetic resin pipe 6.
To contact the outer peripheral surface of the ribbed synthetic resin pipe 6.
The plate-like body 1 is rotated in the circumferential direction of the ribbed synthetic resin pipe 6 and the perforation angle is determined by the angle detecting level 3. After that, a drill is inserted into the small hole 4 of the plate-shaped body 1 to form a positioning hole for perforation, and the plate-shaped body 1 is removed from the ribbed synthetic resin pipe 6 and perforated with a hole saw. In the case of using a jigsaw, the jig 1 is inserted from the arc-shaped through hole 5 while the plate-shaped body 1 is still in contact with the ribbed synthetic resin pipe 6, and the plate-shaped body 1 is drilled along the arc-shaped through hole 5. The outer peripheral surface of the ribbed synthetic resin pipe 6 may be marked with a marker (not shown) along the arc-shaped through hole 5, the plate-shaped body 1 may be removed, and then the perforation may be performed along the mark.

[Effect of device]

As described above, according to the punching aid of the present invention, regardless of whether a hole saw or a jigsaw is used for punching,
The piercing position and piercing angle are determined, and the through hole can be pierced in the ribbed synthetic resin pipe at an accurate position and angle. Further, the size of the through hole is constant, and the branch pipe can be accurately and easily connected.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view, and FIG.
The figure is a plan view, and FIG. 3 is a cross-sectional view in use. In the figure, 1 is a plate-like member, 2 is a ridge, 3 is an angle detecting level, 4
Is a small hole, 5 is an arc-shaped through hole, 6 is a synthetic resin pipe with ribs, and 7 is a rib.

Claims (1)

[Scope of utility model registration request] 1. A drilling aid for use in forming a through hole in a rib-equipped synthetic resin pipe for connecting a branch pipe to the rib-equipped synthetic resin pipe having an annular or spiral rib on the outer peripheral surface of the pipe. The plate-like body having an arcuate cross section is provided with a protrusion on the lower surface thereof, and the angle detecting level is attached to the upper surface of the plate-like body, and the plate-like body has a substantially central portion. An auxiliary tool for piercing a synthetic resin pipe with a rib, characterized in that a small hole for centering and a plurality of arc-shaped through holes centering on the small hole are provided through.