JP2005280181A - Diameter expanding method for pipe insertion hole and guide implement used for this method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily center rotary cylindrical teeth of a hole saw drilling machine even if a wall section for supporting a center drill is not present at the center of a pipe insertion hole. <P>SOLUTION: When an existing pipe insertion hole Q1 formed in a wall P is modified into a pipe insertion hole Q2 having a diameter larger than that of the hole Q1 by expanding the diameter of the hole Q1 by a hole saw drilling machine R having the rotary cylindrical teeth S with a diameter larger than that of the hole Q1, a guide implement with a guide hole 2 having an inner diameter larger than the inner diameter of the pipe insertion hole Q1 is arranged by a fixing means 3. The cylindrical teeth S of the machine R is guided into the guide hole 2 to expanding the diameter of the pipe insertion hole Q1 to cut and form into a larger diameter hole. When the guide hole 2 is arranged to surround the pipe insertion hole Q1, one spot of the inner diameter of the guide hole 2 is aligned with one spot of the inner diameter of the pipe insertion hole Q1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention has, for example, an existing pipe insertion hole drilled in a wall used for pipe drawing to the outside such as duct piping of an air conditioner such as an air conditioner, and has a rotating cylindrical tooth having a diameter larger than that of the pipe insertion hole. The present invention relates to a method for expanding the diameter of a pipe insertion hole to be transformed into a large diameter pipe insertion hole by a hole saw drilling machine and a guide tool used therefor.

  Conventionally, when a flexible pipe such as a duct pipe of an air conditioner is pulled out outdoors, a hole drilling machine in which a center drill mounted on a chuck portion of an electric drill has a rotating cylindrical tooth is used to insert a pipe into a wall. Was drilled out, and pipes such as duct pipes were pulled out from this pipe insertion hole. At this time, the center hole is first formed in the wall with the center drill of the hole saw drilling machine, and then the center hole is rotated around the center hole with the center drill supported by the center hole. A pipe insertion hole having an inner diameter of 1 mm is formed.

Also, when changing the pipe inserted into the pipe insertion hole from a small one to a large one, or depending on the air conditioner arrangement with respect to the pipe insertion hole position, the pipe bends at both ends of the pipe insertion hole. When increasing the degree of freedom, etc., it is necessary to transform the existing pipe insertion hole into a pipe insertion hole having a larger diameter by a hole saw drilling machine having a rotating cylindrical tooth larger than the inner diameter of the pipe insertion hole. It occurred. At this time, a rotating cylindrical tooth having a diameter larger than the inner diameter of the pipe insertion hole is directly drilled into the existing pipe insertion hole by being directly applied to the existing pipe insertion hole smaller than the rotation cylindrical tooth.
nothing special

  However, as in the prior art, when a rotary cylindrical tooth having a diameter larger than that of the pipe insertion hole is directly applied to the existing pipe insertion hole, the hole saw drilling machine originally serves as a guide for the rotary cylindrical tooth. Since there is no wall portion for supporting the center drill, there is a possibility that the center position of the rotating cylindrical tooth to be rotated and drilled cannot be centered, and the rotating cylindrical tooth itself may be eccentrically swung during rotation. In addition, a pipe insertion hole having a high roundness cannot be accurately formed, and there is a problem that workability is deteriorated.

  Therefore, the present invention was created in view of the existing circumstances as described above, and the diameter of the existing pipe insertion hole is increased by a hole saw drilling machine having a rotating cylindrical tooth having a diameter larger than that of the pipe insertion hole. When drilling the pipe insertion hole again, even if the wall portion for supporting the center drill does not exist at the center of the pipe insertion hole, the center positioning with respect to the rotating cylindrical tooth to be rotated and drilled can be performed easily, It is another object of the present invention to provide a pipe insertion hole diameter-enlarging method that can accurately form a pipe insertion hole with high roundness and improve workability, and a guide tool used therefor. .

In order to solve the above-described problem, in the diameter expansion molding method according to the present invention, the existing pipe insertion hole Q1 drilled in the wall P is deformed into a pipe tank passage hole Q2 having a larger diameter than this. When the diameter of the existing pipe insertion hole Q1 is increased by the hole saw drilling machine R having the rotating cylindrical teeth S larger than the inner diameter of the pipe insertion hole, the guide has an inner diameter larger than the inner diameter of the existing pipe insertion hole Q1. The hole 2 is arranged so as to surround the existing pipe insertion hole Q1, and the existing pipe insertion hole Q1 is cut and formed in a diameter-enlarged shape while guiding the rotating cylindrical teeth S of the hole saw drilling machine R through the guide hole 2 It is as.
Further, when the guide hole 2 is disposed around the existing pipe insertion hole Q1, it is possible to arrange one position of the inner diameter of the guide hole 2 so as to match one position of the inner diameter of the existing pipe insertion hole Q1.
On the other hand, in the guide tool 1, the existing pipe insertion hole Q1 is positioned larger than the inner diameter of the existing pipe insertion hole Q1 so as to position and guide the rotating cylindrical teeth S of the hole saw drilling machine R that cuts and molds the pipe insertion hole Q1 in an enlarged shape. A guide member having a guide hole 2 formed to have a large inner diameter, and a fixing means capable of abutting and fixing the peripheral portion of the guide hole 2 of the guide member to the wall P so that the guide hole 2 surrounds the existing pipe insertion hole Q1. 3.
The guide material can be formed in a substantially rectangular plate shape from a foamed synthetic resin material such as polyurethane.
The fixing means 3 may be a double-sided adhesive tape 4 provided with a release paper 4A or a tapping screw 5.

In the method for expanding the diameter of the pipe insertion hole according to the present invention configured as described above, the guide hole 2 having an inner diameter larger than the inner diameter of the existing pipe insertion hole Q1 surrounds the existing pipe insertion hole Q1. Are arranged as follows. At this time, it arrange | positions so that one location of the internal diameter of the guide hole 2 may correspond to one location of the existing pipe penetration hole Q1 internal diameter. By guiding the rotating cylindrical teeth S of the hole saw drilling machine R in this guide hole 2, the rotational center of the rotating cylindrical teeth S is positioned, and the existing pipe insertion hole Q1 is straightened and rounded. It is deformed into a hole with a large diameter and cut and formed.
Further, in the guide tool 1 used for the diameter expansion molding of the pipe insertion hole, the guide hole 2 of the guide tool 1 has one inner diameter of the guide hole 2 and one existing inner diameter of the pipe insertion hole Q1. The guide tool 1 itself is fixed to the wall P by the double-sided adhesive tape 4 provided with the release paper 4A or the fixing means 3 by the tapping screw 5 so as to match with the existing pipe insertion hole Q1.

  According to the present invention, when the large-diameter pipe tank hole Q2 is drilled by the hole saw drilling machine R having the rotating cylindrical teeth S having a larger diameter than the pipe insertion hole Q1 with respect to the existing pipe insertion hole Q1, Even if the wall P portion for supporting the center drill does not exist at the center of the pipe insertion hole, the center positioning with respect to the rotating cylindrical tooth S to be rotated and drilled can be easily performed, and thereby the pipe insertion hole is straight and has high roundness. Can be formed accurately, and workability can be improved.

  That is, in the present invention, the guide hole 2 having an inner diameter larger than the inner diameter of the existing pipe insertion hole Q1 is arranged so as to surround the existing pipe insertion hole Q1, and the rotation of the hole saw drilling machine R is inserted into the guide hole 2. This is because the existing pipe insertion hole Q1 is cut and formed in an expanded shape while guiding the cylindrical teeth S, so that the rotation center of the rotating cylindrical teeth S is reliably positioned, and the rotating cylindrical teeth are rotated as in the past. It is possible to prevent the S itself from eccentrically swinging during rotation.

  When the guide hole 2 is disposed so as to surround the existing pipe insertion hole Q1, the inner diameter of the guide hole 2 is arranged so as to match the inner diameter of the existing pipe insertion hole Q1, so that the existing pipe insertion hole When Q1 is cut with a hole saw punching machine R into a diameter-enlarged shape, the cut and removed portion has a substantially crescent shape with a thick center, so that it can be easily cut and removed.

  A guide hole 2 formed with an inner diameter larger than the inner diameter of the existing pipe insertion hole Q1 so as to position and guide the rotating cylindrical teeth S of the hole saw drilling machine R that cuts and molds the existing pipe insertion hole Q1 in an enlarged shape. A guide member 1 having a guide member 1 and a fixing means 3 that can fix the peripheral edge of the guide hole 2 of the guide member to the wall P so that the guide hole 2 surrounds the existing pipe insertion hole Q1. Accordingly, the pipe insertion hole Q2 that is straight and has high roundness can be accurately formed, and workability can be improved.

  Since the guide material is formed in a substantially rectangular plate shape by a foamed synthetic resin material such as polyurethane, the guide material 1 can be guided without damaging the rotating cylindrical teeth S of the hole saw drilling machine R, and the guide tool 1 itself can be made inexpensively. Can be produced.

  Since the fixing means 3 is the double-sided adhesive tape 4 provided with the release paper 4A or the tapping screw 5, the guide device 1 can be firmly fixed to the wall P, and the guide device 1 itself can be attached and detached. It will be easy.

  Note that the reference numerals added in the means for solving the above-described problems and the effects of the invention are given for easy reference to the parts showing the components shown in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

  The best mode for carrying out the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the drawing denotes a wall for drawing a pipe V to the outside such as duct piping in an air conditioner such as an air conditioner. The existing pipe insertion hole Q1 drilled in P is used to form a large diameter pipe tank through hole Q2 by a hole saw drilling machine R having a rotating cylindrical tooth S having a diameter larger than that of the pipe insertion hole Q1. It is a guide tool. The hole saw drilling machine R has a known configuration in which a center drill C mounted on a chuck portion of an electric drill has a rotating cylindrical tooth S.

  As shown in FIG. 1, the guide tool 1 is formed of a substantially rectangular guide material made of, for example, a polyurethane synthetic resin material such as polyurethane, and an inner diameter of an existing pipe insertion hole Q1 is formed at the center of the guide tool 1. A circular guide hole 2 having an inner diameter that is, for example, about 2.5 mm larger than the inner diameter of the existing pipe insertion hole Q1 formed to have a slightly larger inner diameter is formed. At this time, when the guide hole 2 is disposed so as to be surrounded by the existing pipe insertion hole Q1, it will be described later so that one location of the inner diameter of the guide hole 2 is arranged to match one location of the existing inner diameter of the pipe insertion hole Q1. The guide 1 is fixed to the wall P by the fixing means 3.

  And the fixing means 3 is provided in the guide hole 2 peripheral part of the guide tool 1 so that it can contact | abut and fix to the wall P in the state which surrounded the existing pipe insertion hole Q1 in the guide hole 2. As shown in FIG. As a specific configuration of the fixing means 3, one adhesive surface of the double-sided adhesive tape 4 is attached to, for example, the four peripheral portions in the peripheral portion of the guide hole 2 of the guide 1, and the release paper is attached to the other adhesive surface. 4A is attached, and when the guide tool 1 is used, the release paper 4A is peeled off and attached to the peripheral portion of the existing pipe insertion hole Q1 on the wall P. Further, through holes 5A through which the tapping screws 5 are inserted are formed at, for example, four corners in the peripheral portion of the guide hole 2 of the guide tool 1, and the tapping screws 5 inserted through the through holes 5A are provided as walls. The guide 1 is firmly fixed to the wall P by forcibly screwing it into P.

  Thus, by using the guide tool 1 with respect to the existing pipe insertion hole Q1, the rotating cylindrical tooth S of the hole saw drilling machine R is positioned and guided, and thereby the existing pipe insertion hole Q1 is expanded in diameter. It is supposed to be cut and molded by deformation.

  Next, the use of the configuration according to the present invention will be described. First, as shown in FIG. 2, when the guide hole 2 of the guide tool 1 is disposed around the existing pipe insertion hole Q1, the inner diameter of the guide hole 2 is set. One place is arranged so as to coincide with one place of the existing inner diameter of the pipe insertion hole Q1, and then fixed by the fixing means 3. At this time, the peeling paper 4A of the double-sided pressure-sensitive adhesive tape 4 attached to, for example, the four peripheral portions as the fixing means 3 of the guide hole 2 peripheral portion of the guide tool 1 is peeled off, and the existing pipe insertion hole Q1 peripheral portion of the wall P Adhere to. Further, the guide tool 1 is firmly fixed to the wall P by forcibly screwing the tapping screw 5 inserted into the through holes 5A at the four corners of the guide tool 1 into the wall P.

  As shown in FIG. 3 to FIG. 5, the rotating cylindrical tooth S of the hole saw drilling machine R is inserted along the guide hole 2 of the fixed guide 1 and the electric drill is driven, thereby rotating the rotating cylindrical tooth S. Is rotated while being guided by the guide hole 2, and the existing pipe insertion hole Q1 is deformed and cut in an enlarged shape so as to be cut and removed into a substantially crescent shape with a thick portion at the center.

  Thus, as shown in FIGS. 6 and 7, a large-diameter pipe insertion hole Q2 having an inner diameter of about 2.5 mm larger than the inner diameter is punched into the existing pipe insertion hole Q1, and the whole is about 5 mm. The margin width d is formed. Then, a plurality of pipes V are inserted into the large-diameter pipe insertion hole Q2 after the diameter expansion molding, and the bending state of the pipe V is freely adjusted, and then the gap of the large-diameter pipe insertion hole Q2 is closed with a putty material, for example. Just do it.

  The guide tool 1 itself is removed after the existing pipe insertion hole Q1 is formed by the hole saw drilling machine R, but the large-diameter pipe insertion hole Q2 with the guide tool 1 attached as necessary. A pipe V may be inserted into the pipe.

It is a rear view of the guide tool which shows the best form for implementing this invention. It is a perspective view which similarly shows the attachment state of a guide tool. It is a perspective view which shows the state which deform | transforms into a large diameter pipe insertion hole with a hole saw drilling machine through the guide hole of the guide tool similarly fixed to the existing pipe insertion hole position in the wall. It is a front view of the guide tool similarly fixed to the existing pipe penetration hole position of a wall. FIG. 5 is a cross-sectional view taken along line X-X in FIG. 4. It is sectional drawing which shows the state which penetrated the several pipe through the pipe penetration hole shape | molded with the hole saw punching machine using the guide tool, and was fixed with the putty material. FIG. 7 is a cross-sectional view taken along line YY in FIG. 6.

Explanation of symbols

P ... Wall Q1 ... Existing pipe insertion hole Q2 ... Large diameter pipe insertion hole R ... Hole saw drilling machine S ... Rotating cylindrical tooth C ... Center drill V ... Pipe 1 ... Guide tool 2 ... Guide hole 3 ... Fixing means 4 ... Both sides Adhesive tape 4A ... Release paper 5 ... Tapping screw 5A ... Insertion hole

Claims (5)

  The existing pipe insertion hole is formed by a hole saw drilling machine having a rotating cylindrical tooth larger than the inner diameter of the pipe insertion hole so as to be deformed into a pipe insertion hole having a larger diameter than the existing pipe insertion hole drilled in the wall. When the diameter of the pipe is increased, a guide hole having an inner diameter larger than the inner diameter of the existing pipe insertion hole is disposed so as to surround the existing pipe insertion hole, and this guide hole guides the rotating cylindrical teeth of the hole saw drilling machine. A method for expanding the diameter of a pipe insertion hole, wherein the existing pipe insertion hole is cut and formed into an expanded diameter.   The diameter of the pipe insertion hole according to claim 1, wherein when the guide hole is disposed around the existing pipe insertion hole, the inner diameter of the guide hole is arranged so as to coincide with one position of the existing inner diameter of the pipe insertion hole. Molding method.   A guide material having a guide hole formed with an inner diameter larger than the inner diameter of the existing pipe insertion hole so as to position and guide the rotating cylindrical teeth of the hole saw drilling machine that cuts and shapes the existing pipe insertion hole into a diameter-expanded shape; A pipe insertion hole characterized by comprising a guide means having a fixing means that allows the guide hole peripheral edge of the guide material to abut against the wall so that the guide hole surrounds the existing pipe insertion hole. Guide tool used for diameter expansion molding.   The guide material used for diameter-expansion shaping | molding of the pipe penetration hole of Claim 3 currently formed in the substantially rectangular-plate shape by the foaming synthetic resin materials, such as a polyurethane. The guide means used for diameter-expanding molding of the pipe insertion hole according to claim 3 or 4, wherein the fixing means is a double-sided adhesive tape provided with release paper or a tapping screw.

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