JPH1042430A - Method for drilling opening forming hole of wiring box and wiring box, drilling tool, tool to be defected, and gauge tool used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for drilling opening-forming hole of wiring box by which almost all front surface of a wiring box fitted to the rear surface of a wall can be faced to the front surface of the wall and the workability can be improved. SOLUTION: In a method for drilling the opening-forming hole of a wiring box 9, a first through-hole 10a is drilled through the wall of the box 9 around the detected position of a section 9d, to be detected provided in the box 9 so that the section 9d can be detected from the surface and the aligning section of a through-hole center indicating tool is aligned with a positioning section 10b, facing the surface of the wall through the hole 10a and a second through- hole 10c is drilled around the position, found from an indicating section provided at a prescribed distance from the section 10b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for piercing an opening forming hole of a wiring box for allowing substantially the entire front surface of a wiring box disposed on the back of the wall to face the wall surface, and wiring used for the piercing method. The present invention relates to a box, a piercing tool for piercing a through-hole in a wall material, a detection target for providing a position of a center of the first through-hole, and a gauge.

[0002]

2. Description of the Related Art Conventionally, as a method of drilling an opening forming hole of a wiring box to expose substantially the entire front surface of a wiring box disposed on the back of the wall to the surface of the wall, a metal provided in the wiring box is formed on the wall. Detect the position of the wiring box located behind the wall by detecting the magnet provided in the wiring box from the front with a metal detector, or by detecting the magnet provided in the wiring box with the magnetic detector from the wall surface. The outer shape is extracted, and the wall material is cut along the outer shape using a saw or a cutter, so that the front surface of one side of the wiring box faces the wall surface.

[0003]

However, the above-mentioned conventional method for drilling an opening forming hole in a wiring box detects a portion to be detected provided in the wiring box, and moves the wall material along the outer shape of the wiring box. Not only is it extremely troublesome and the work efficiency is extremely poor, but also it is difficult for even a skilled worker to cut the wall material squarely along the outer shape of the wiring box with a saw or a cutter, so it is arranged behind the wall. It has been desired to develop a method of forming a hole for forming an opening in a wiring box, which is excellent in workability and can easily make substantially the entire front surface of the wiring box face the wall surface.

[0004] The problem to be solved by the present invention is to solve the above-mentioned problem of the conventional method for drilling an opening forming hole of a wiring box. An object of the present invention is to devise a method of forming an opening forming hole in a wiring box, which is excellent in workability and can expose substantially the entire front surface of the arranged wiring box.

[0005] Then, a wiring box used in this drilling method, a drilling tool used for drilling a through hole in a wall material, and a second and subsequent drilling holes when drilling a plurality of through holes in a wall material. A gauge tool which can easily provide the position of the center of the through hole to be drilled, and the center of the hole to be drilled first provided in the wiring box arranged behind the wall. It is another object to develop and provide a detectable and removable detectable device, respectively.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the gist of the present invention is to provide a wall material in which a plurality of through-holes are formed in a wall material so that the front surface of a wiring box arranged on the back of the wall is covered with a wall. A method for piercing an opening forming hole of a wiring box to face a wall material, wherein a detection position of a detection target portion provided in the wiring box so as to be detectable from a wall surface is a center of the piercing and a first transparent hole is formed with respect to a wall material. A hole is formed, and then a positioning part of the through hole center indicator is aligned with a positioning part of the wiring box exposed on the wall surface by the first through hole. 3. A method according to claim 2, further comprising the step of: drilling a second through hole having a center determined by a display portion provided at a predetermined distance from the display unit. The gist of the above is that Claim 1, wherein the display device is being provided to the piercer for use in drilling a hole
In the method of drilling the opening forming hole of the wiring box described in the above,
The gist of the invention according to claim 3 is that, in the through-hole center indicator, the alignment portion is formed by a center portion of a punch used for drilling a through-hole, and 3. The wiring according to claim 2, wherein the wiring is integrally formed with an outer wall of a cover body provided at a predetermined distance from the center portion to prevent scattering of chips generated when drilling a through hole. A method of piercing an opening forming hole of a box is provided in the method of piercing the opening forming hole of the wiring box. It is characterized in that the positioning portion is aligned with a positioning portion provided at a predetermined interval from the center portion of the drilling tool, and a second through-hole having the center portion as the center of the drilling is formed in that state. Claim The method according to claim 2, wherein the positioning portion also serves as a boss for fixing a wiring device mounting frame. A method of piercing an opening forming hole of a wiring box according to any one of claims 1 to 4, wherein the gist of the invention according to claim 6 is that the first through hole is formed with respect to a wall material. Prior to drilling, the detected part provided in the wiring box is magnetically detected from the surface of the wall, a small hole is pierced at a detection position of the detected part in the wall material, and then a metal hole is formed in the small hole. The opening forming hole of the wiring box according to any one of claims 1 to 5, wherein the position of the detected part is confirmed by inserting or removing a rod and magnetically attracting the detected part. Perforation method,
According to the method for piercing the opening forming hole of the wiring box of these inventions, it is not necessary to cut the wall material into a square shape along the outer shape of the wiring box with a saw or a cutter, etc. Almost the entire front surface can easily, quickly and reliably reach the wall surface.

[0007] Next, the gist of the invention according to claim 7 is a wiring box which is arranged on the back of the wall and has a plurality of through holes formed in the wall material so that substantially the entire front surface faces the wall surface. There is a detected portion provided inside the wall surface so as to be detectable from the wall surface, and a wall surface through a first through hole formed in the wall material with the position of the detected portion detected from the wall surface as a center of the hole. And a positioning portion that is used to determine the position of the center of the perforation when the one or more second through-holes are perforated in the wall material, and a wiring box characterized by being provided with Yes,
The gist of the invention according to claim 8 is a wiring box that is disposed on the back of a wall and has a plurality of through holes formed in the wall material so that substantially the entire front surface faces the wall surface. A mounted part to which a detection tool having a detectable detection part is removably mounted, and a first through-hole formed in a wall material with the position of the detection part detected from the wall surface as a center of the perforation. And a positioning portion that is exposed to the wall surface through the hole, and is used to determine the position of the center of the hole when the one or more second through holes are formed in the wall material. The positioning of the positioning box also serves as a boss for fixing the wiring device mounting frame. 8 according to the wiring box of the invention, The present position of the arranged the wiring box can easily detect through the object to be detected portion,
The first through-hole (first through-hole) can be formed in the wall material with the detection position of the detected portion as the center of the perforation, and one or more holes which are arranged behind the wall and are then formed in the wall material When the second through-hole is drilled, the positioning portion used to determine the position of the center of the second through-hole faces the wall surface by drilling the first through-hole. The second through-hole can be drilled around the center of the center of the second through-hole determined from the above, and almost the entire front surface of the wiring box can easily, quickly and reliably face the wall surface. The wiring box can be provided.

Next, a gist of the invention of claim 10 is to form a through-hole in the wall material so that substantially the entire front surface of the wiring box disposed behind the wall faces the wall surface. A center part serving as a center of rotation when drilling a through hole in a wall material, a drilling blade rotating to drill a wall material around the center part, and a drilling tool for the wiring box. A positioning portion for positioning a positioning portion provided in the wiring box through a first through hole formed in the wall material so that a part of the front surface faces the wall surface, and a predetermined position from the positioning portion. And a display unit provided on the wall surface to provide a position of the center of the second through-hole on the wall surface, and wherein the gist of the invention of claim 11 is provided. In other words, the positioning part is constituted by the tip of the center part, The piercing device according to claim 10, wherein the indicating portion is integrally formed with an outer wall of the cover body for preventing scattering of chips generated at the time of drilling the through hole. Can be prevented from scattering.

According to the piercing tool of the present invention, it is possible to provide the position of the center of the second through hole to be pierced in the wall material, and use a saw or a cutter to form the wall material in a rectangular shape along the outer shape of the wiring box. It is not necessary to cut through the wall material, and the through hole can be quickly and reliably formed in the wall material, whereby the substantially entire one side of the wiring box arranged on the back of the wall can be easily formed on the wall surface,
It can be seen quickly and reliably.

Next, the gist of the invention according to claim 12, claim 13 and claim 14 is that the wall material is provided so that substantially the entire front surface of the wiring box disposed on the back of the wall faces the wall surface. A gauge tool used to indicate the position of the center of a hole of a through hole to be drilled, wherein a first through hole formed in a wall material to expose a part of the front surface of the wiring box to a wall surface. A positioning portion for positioning the positioning portion provided on the wiring box exposed on the wall surface through the positioning portion; and a center of the second through-hole in the wall surface provided at a predetermined distance from the positioning portion. A display unit for providing a position, and a gauge tool characterized by comprising:
In particular, the position of the center of the second through hole can be reliably provided.

Next, the gist of the invention of claim 15 is that the first part of the wall material is drilled in the wall material so that substantially the entire front surface of the wiring box arranged behind the wall faces the wall surface. A detection target that provides a center position of a perforation hole, comprising: a mounting portion that is removably mounted on a wiring box; and a detection target that can be detected from a wall surface. When the object to be detected is attached to the wiring box, a positioning unit provided in the wiring box to provide a perforation center position of the one or more second through holes that are subsequently drilled with respect to the wall material,
The detection target is located at a position that can be exposed to the surface of the wall through the first through-hole, and can easily detect a position where the wiring box is located at the back of the wall. The position of the center of the first through hole to be drilled in the material can be provided, and a positioning part for determining during the drilling of the second through hole can be exposed to the wall surface, and the front of the wiring box can be provided substantially. It can be collected and reused after the whole is exposed to the wall surface.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing a method of forming an opening in a wiring box according to the present invention, a hole is formed in a wiring box and a wall material used in the method of forming an opening. A piercing device used for piercing, a detectable device detectable and removable from a wall surface to provide a position of a piercing center of a through hole to be initially formed; A description will be given of a gauge tool that can provide the position of the center of the through hole to be drilled after the second when the through hole is drilled.

FIG. 1 is a perspective view showing a state in which a wiring box 30a according to one embodiment is mounted on a column P, and FIG. 2 is a front view of the same.

As shown in the drawing, this wiring box 30a
In the eccentric position of the wiring box main body 9, a detection target 9d facing the opening from the bottom surface is provided, and a pair of boss bodies 9c, 9c 'for attaching a wiring device mounting frame for accommodating wiring devices and the like are provided on the peripheral wall. And a fixing portion (fixing means) 9e is provided on an outer surface of one side of the wiring box main body 9 and is nailed and fixed to the column P via the fixing portion 9e. .

One boss member 9c 'of the pair of boss members
Is configured to be exposed by the first first through hole 10a formed in the wall material 8 and face the wall surface, and
Each of the pair of bosses 9c and 9c 'is formed to be lower than the open end so that the bosses 9c and 9c' are not cut or damaged when the through hole 10 is formed in the wall W by the piercing device 20 described later. It is configured.

Then, the first through hole 10a is formed with a detection hole 9d provided at an eccentric position of a wiring box disposed on the back of the wall, which is provided with a metal foil, a magnet, or the like on the upper surface in advance. In the boss 9c 'that is exposed from the body and faces the wall surface,
The positioning portion 16a of the through hole center display device 16 is engaged, and one or more second through holes 10c are provided by the display portion 16b of the display device 16 provided at a predetermined interval from the positioning portion 16a.
After the position 10d of the center of the perforation is displayed, the second through hole 10 having a perfect circular shape centered on the position 10d of the center of the perforation.
By drilling c, almost the entire front surface of the wiring box 30a is exposed to the wall surface. That is,
One boss member 9c 'of the pair of boss members is provided with the second through hole 1
It also serves as a positioning portion 9a for providing a drilling center of 0c.

The boss 9c '(positioning portion 9a)
As described above, the wall W
It is preferable that the wiring box 9 is formed lower than the opening end of the wiring box 9 so as not to be cut or damaged when the through hole 10 is formed. However, if the positioning portion 9a is 1
The configuration is not limited to one of the bosses 9c 'of the pair of bosses, and the wiring box 9 may be separately provided with a positioning portion 9b that cannot be used as a boss. Unless stated otherwise, the same applies to the wiring box 30 described below.

The through hole center indicator 16 referred to here is
When determining the position 10d of the center of the perforation of the second through hole 10c in the wall surface, a part or one member of the wiring box body 9 exposed on the wall surface through the first through hole 10a formed in the wall material. Is described as a meaning including all of the components configured to be used as the positioning portion 9b, and is not limited to the embodiment and the like. It comprises a positioning device 16a provided at the lower end of a leg 7b of a later-described gauge device 18 and a drilling device 20 described later, which is roughly positioned with respect to the positioning device 9, and a display unit which can display dots on a wall surface. And the like. In other words, the position of the center of the second through-hole on the wall surface is used to include all of those having a function of enabling dot display on the wall surface.

The positioning unit is an essential component provided in the through-hole center indicator 16 and functions to determine the position of the center of the second through-hole on the wall surface. However, the embodiment is not limited to the case where the positioning portion 9 is directly brought into contact with (engaged with) the positioning portion 9 exposed on the wall surface through the first through-hole, and the positioning provided on the wiring box is not limited to this. Placed at any distance from unit 9;
It is used as a meaning including one configured to roughly align the two. As a specific example, a positioning portion 16a (FIGS. 29 and 30) provided on a gauge tool 18a of an embodiment to be described later, and a leg 7 of the piercing tool 20 are used.
An alignment unit (not shown) serving as a component of the through-hole center indicator 16 provided at the lower end of b may be exemplified.

The detected portion 9d has a structure in which a metal foil is adhered to a top end of a tubular body protrudably provided on the inner side of the bottom wall. However, it is sufficient that a member (shown in black in the drawing) detectable from the wall surface is provided at the top end of the cylindrical body of the detection target portion. In addition to the foil, a metal ring and a magnet can be exemplified. In other words, the detected portion 9d has a function of enabling its own position to be detected from the wall surface and a function of positioning to provide the position 10b of the center of the first through hole 10a. In addition, the detected part 9 d is provided with the through hole 1 with respect to the wall material 8.
If it remains after drilling the hole 0, it will hinder the work of attaching cables and wiring equipment, and the accommodation space in the box 30 will be narrowed. Preferably, it is provided.

In a wiring box 30b of another embodiment shown in a plan view in FIG. 3, a through hole is formed in one side wall of the box 9, and the column P is screwed and fixed to the column P through this through hole (fixing means 9e). Other than that, the configuration is substantially the same as that of the wiring box 30a. The wiring box 30b shown in FIG. 3 illustrates that the fixing means for fixing the wiring box to the support P is not limited, and may be a fixing means having a configuration other than the above.

A wiring box 30c according to another embodiment shown in a plan view in FIG. 4 has a foldable detection portion 9d projecting from the bottom surface to the opening at the eccentric position of the wiring box 9 arranged behind the wall. In addition, two pairs of bosses 9c, 9c for attaching a wiring device mounting frame 15a holding the wiring device 15b and the like are protruded in proximity to opposing positions on the peripheral wall. Wiring equipment mounting frame 1
5a and 15a can be attached. A positioning portion 9b for providing a position of the center of the hole of the second through hole 10c is provided on the upper surface of the detected portion 9d. That is, the wiring box 30c has a function as the detected portion that is provided from the wall surface and provides a center of the first through hole 10a and a positioning portion 9b that provides a position 10d of the center of the second through hole 10c. Detected portion 9d, which also has the function of, is protruded from the bottom surface toward the opening at the eccentric position of wiring box main body 9, and is located at the center of the center of the second through hole on the right side of detected portion 9d. A feature is that a position 10d is determined, and a second through hole 10c is drilled to the right of the first through hole 10a.

Wiring box 3 of still another embodiment of the present invention
As shown in FIG. 11, a positioning portion 9a also serves as a boss 9c 'facing the opening from the bottom surface of the wiring box main body 9, as shown in FIG.
Are protrudingly provided, and have a structural feature in that a repeatedly usable detection tool 17 to be described later is removably mounted on the positioning portion 9a also serving as the boss portion. As in the case of the above-mentioned detected portion 9d, it has both a function of detecting its own position from the wall surface and a function of providing the position 10b of the center of the first through hole.

FIG. 5 is a plan view showing a wiring box 30e according to still another embodiment of the present invention, FIG. 6 is a cross-sectional view showing a section AA in FIG. 1, and FIG. 8 is a perspective view of the detected part 9d removed from the wiring box 30e, and the detected part 9d functions as the detection tool 17. FIG. FIG. 9 shows the detected portion 9d (detected device 17) removed from the wiring box.
FIG. 10 is a longitudinal sectional view showing a state in which is mounted on a different wiring box 30f.

In the drawing, the wiring box 30e of this embodiment can be removably mounted at an eccentric position of the wiring box main body 9 on a mounting portion 9f of a wiring box 30f different from the wiring box 30e. Mounting part 17
c, a pair of bosses 9c for integrally attaching a wiring device mounting frame holding wiring devices and the like, is formed integrally with the detected portion 9d having an opening c facing the opening from the bottom wall of the wiring box 30e. 9c 'is protruded in the vicinity of the opposing position of the peripheral wall, and as described above, one boss member 9c' of the pair of boss members provides the position of the center of the second through hole. Is configured so as to also serve as a positioning portion 9a.

The detected part 9d includes a wiring box 30e.
A metal foil is adhered to the top end of a tubular body protrudably provided on the bottom wall of the tubular body, and a tongue-shaped mounting portion 17c is formed on the opposed lower surface of the lower end of the tubular body. The outer surface of the lower end of the cylindrical body orthogonal to the tongue-shaped mounting portion 17c can be separated via a connecting portion 9h partially connected to the periphery of a circular hole provided in the bottom wall of the wiring box 30e. Are integrally connected to each other.

Therefore, the location of the detected portion 9d (17b) can be detected from the surface of the wall by the detector 14 (the location of the wiring box disposed on the back of the wall can be easily detected). Through hole 1 with the detection position as the center of drilling
0a can be pierced into the wall material 8, and this through hole 1a
The detected portion 9d can be exposed to the wall surface via the outer wall 0a and can be removed from the bottom wall of the wiring box 30e while having the mounting portion 17c, and the removed detected portion 9d is The mounting portion 17 is attached to a mounting portion 9f provided in a wiring box 30f different from the wiring box 30e.
It can be repeatedly used as the detection device 17 that can be detachably attached via the connector c.

Such a wiring box is an embodiment corresponding to any one of the inventions according to claims 6 to 8, and is provided with an attached portion 17c provided on the to-be-detected portion 9d. A wiring box 30f (FIG. 9) having a detachable mounting portion 9f shows an embodiment corresponding to the seventh aspect of the present invention. However, it is a matter of course that the shape and overall configuration of the wiring box itself can be appropriately changed in design as long as the gist of the present invention is not exceeded.

Next, as described above, in place of providing the detection portion 9d in the wiring box, a detection target 17 which can be detachably mounted can be used. FIG. 10 is a plan view, and FIG. 11 shows a protruding body (the boss 9 in this figure) provided on the wiring box 9.
c '), as shown in a plan view of the main part showing the state of attachment, a mounting portion 17a detachably mounted to the boss body 9c' of the wiring box 30d, and the position of itself can be detected from the wall surface. Function and the center position 10b of the first through hole
And a detection unit 17b that provides both of the functions as a positioning that provides the above. However, the shape and quantity of the object to be detected or the position where the object to be detected is mounted are not limited to, for example, the illustrated boss body, and any of these items can be appropriately changed in design.

This detected object shows an embodiment corresponding to the invention described in claim 12.

Next, a piercing device 20 according to an embodiment of the present invention will be described.

The piercing tool 20 of the embodiment has a center shaft (center portion) serving as a rotation center of the piercing blade 4 when piercing a through hole.
2 and a cover body 7 for preventing the scattering of chips generated when the through-hole is formed. The distance L from the center axis 2 to the peripheral edge 7f of the outer wall of the cover body 7 is: It is formed so as to have the same interval L as the interval from the positioning portion 9b to the center of the second through hole. That is, the tip of the center shaft 2 functions as a positioning portion 16a that is positioned with the positioning portion 9b, and the cover body 7
The peripheral edge 7f of the outer wall functions as a display section 16a for displaying the position 10d of the center of the perforation of the second through hole 10c. Then, when a through hole is formed in the wall material so that substantially the entire front surface of the wiring box 30 disposed on the back of the wall faces the surface of the wall, cables, wiring devices, and wiring boxes disposed on the back of the wall are formed. The through hole can be formed without damaging the cable 9 or the cable housed in the wiring box 9 itself.

This will be described in more detail with reference to FIGS. As shown in the figure, the piercing tool 20a is detachably attached at its tip to a handy type rotary drive tool, and has a rotary shaft 1 driven to rotate by the rotary drive tool, and one end detachably attached to the rotary shaft 1. A center shaft 2 (2) that provides the position of the center of the perforated hole 10 that is fixed and perforated in the wall material.
d), a central through-hole 5a is formed concentrically with the position of the center of the through-hole 10 and the rotary shaft 1 is formed in the central through-hole 5a.
Is detachably inserted into the lower part of the center through hole 5a.
A main body block 6 comprising a rotating body 5 having a perforated blade 4 fixed via blade body brackets 3 attached to opposing sides more separated from each other by a predetermined distance, and an opening 7a provided in a side wall surface to rotate the main body block. A cup-shaped leg 7b that covers the entire body 5, a cylindrical portion 7d integrally formed on the upper portion of the leg 7b and provided with an insertion hole 7c through which the rotary shaft 1 is inserted, and detachably attached to the opening 7a. A cover member 7 comprising a lid member 7e for locking and covering the entire opening 7a, and a cutting depth adjusting device 13 fixed on the upper surface of the cover member 7 and restricting the moving distance of the main body block 6. When the through hole 10 is formed in the wall material 8 so that substantially the entire front surface of the wiring box 30 disposed on the back of the wall faces the surface of the wall, the wiring box 30 is disposed on the back of the wall. Cables and wiring equipment, wiring box 30 itself, or It has to be drilled through hole 10 without damaging the like cables accommodated in the wiring box 30.

The rotating shaft 1 has a gripper 1a which can be detachably attached to the chuck of the rotary driving tool, and a gripper 1a.
and a housing 1b having a cylindrical space extending from a and having an open end, and is integrally inserted into a mounting portion 2a formed on a center shaft 2 to be described later on a lower axis of the rotating shaft 1 so as to be detachably inserted. A possible attachment 1c is formed. A coil spring, which constantly urges the center shaft 2 in the protruding direction by a resilient force and allows the center shaft 2 to be immersed inside the housing 1b against the resilient force, is provided in the housing 1b. A spring (elastic body) 1d is provided inside. One end of the spring 1d is elastically supported by the inner bottom surface of the housing 1b, and the other end is elastically supported by an attached portion 2a formed on the center shaft 2.

The center shaft 2 has an attached portion 2a formed at one end in a shape corresponding to the attached portion 1c formed on the housing 1b. The rotary shaft 1 is detachably attached to a mounting portion 1c formed on the rotary shaft 1, and can be stopped by the stopper ring (detachment means) 2b so as to idle with respect to the rotary shaft 1. On the other hand, a point 2c is formed integrally with the other end of the center shaft 2 so as to provide a second contact portion 2e that contacts the wall member 8.

That is, although the center shaft 2 is attached to the rotating shaft 1 and is rotatable, and is urged in the projecting direction by the restoring force of the coil spring 1 d provided inside the rotating shaft 1, When the entire piercing tool 20 of the present invention is pressed against the wall material 8, the point 2 c is
And the center shaft 2 can be independently immersed inward of the rotary shaft 1 against the elastic force of the spring 1d, and the point 2c is formed on the surface of the wall material 8. And the hole 10 formed in the wall material 8 functions to prevent displacement of the center of the hole so that the hole does not shift. Therefore, the hole 10 having a perfect circular shape can be easily formed at a predetermined accurate position. Can be set up.

The rotary body 5 has a central through hole 5a formed concentrically with the center of the through hole 10 formed in the wall member 8, and the inner surface of the central through hole 5a is notched in the axial direction. A concave portion is formed, and a convex portion formed on the lower outer surface of the rotary shaft 1 is pivotally supported in this concave portion so that the concave portion can be removably inserted into the concave portion and can be fixed in a state where the rotation is stopped. ing. Further, in the rotating body 5, the center through hole 5a
Nut-shaped fixing portions 5b are formed at opposite positions on the opposite sides separated from each other by a predetermined distance, and the blade bracket 3 can be bolted to the fixing portions 5b.

The blade bracket 3 is integrally formed in a substantially rectangular parallelepiped shape. As shown in the figure, a female screw 3 a is threaded on the outer side wall of the blade bracket 3, and between the bolt head of the bolt 11 screwed to the female screw 3 a and the side wall of the blade bracket 3. The perforation blade 4 for cutting the wall material 8 is sandwiched. A long through hole 3b is formed in the center of the blade body bracket 3 in a direction perpendicular to the side wall provided with the perforated blade 4, and the through hole 3b is formed.
The blade bracket 3 is fixed to both sides of the rotating body 5 by screwing a tip end of a bolt 11 provided through the rotating body 5 to the fixing portion 5b formed in the nut shape. . However, the shape and quantity of the blade bracket 3 attached to the rotating body 5 are not limited, as long as each perforation blade 4 is fixed so as to draw the same circular locus about the center of the center shaft 2. Of course, it goes without saying that the design can be changed as appropriate.

It is preferable that the cutting edge of the piercing blade 4 is formed in a V-shape, since the sharpness when piercing the wall material is good.

As shown in a perspective view in FIG. 18, the cover body 7 has a cup-shaped leg 7b having an opening 7a formed on one side surface, and is integrally formed on an upper portion of the leg 7b. It comprises a cylindrical portion 7d provided with an insertion hole 7c through which the rotary shaft 1 is rotatably inserted, and a lid member 7e which is detachably engaged with the opening 7a and covers the whole of the opening 7a. The distance from the center position of the insertion hole 7c to the peripheral edge 7f of the leg 7b is equal to the center position 10 of the second through hole 10c.
It is formed at a desired predetermined interval so that it can be used as the through hole center display section 16 for determining d.

However, the shape of the peripheral edge of the cup-shaped leg 7b is not limited. For example, the shape of the peripheral edge 7f of the leg 7b is a perfect circle and is formed at a position where the center of the insertion hole 7c is eccentric. Alternatively, the shape of the peripheral edge 7f of the leg 7b may be formed in an elliptical shape other than a perfect circle, or the peripheral edge 7f of the leg 7b may be formed in various shapes from a triangle to a polygon.

For example, if the peripheral edge 7f of the leg 7b is formed in an elliptical shape, the distance from the center of the insertion hole 7b (the center of the rotating shaft 1) to the peripheral edge 7f (display section 16b) is defined as a short axis. And the length of the long axis can be selected as appropriate, so that the distance between the center of the rotating shaft 1 and the display portion 16b at the center of the through hole can be freely set to an appropriate desired distance. It is preferable because it can be selected and can handle wiring boxes of different types and sizes with one unit.

The cutting depth adjusting device 13 employs a "cutting depth adjusting device in a rotary cutting tool" described in Japanese Utility Model Publication No. 59-43045 filed by the applicant of the present invention. A cylindrical slider having a spirally inclined slope formed in the axial direction is rotatably fitted to the cylindrical portion of the main body having legs at the lower part thereof, and is provided at the upper part so as to be slidable in the axial direction. It is configured to protrude from the body to correspond to the spiral slope of the rotary cylinder.

A piercing tool 20b according to another embodiment of the present invention has one end elastically supported by a leg 7b of the cover body 7 with a spring 7h as shown in FIG. The other end is provided with a locating pin 7g provided so as to protrude forward from the leg 7b of the cover body 7, and the distance between the center shaft 2 and the locating pin 7g is set on the wall surface by the first through hole 10a. Except for the fact that the distance between the exposed positioning portion 9b and the position of the center 10d of the second through hole 10c is the same as that of the piercing tool 20a, the other configuration is substantially the same. Things.

Therefore, the drilling blade 4 does not directly contact the wall member 8 when displaying the position 10d of the center of the drilling of the second through hole 10c, and the locating pin 7g is constantly biased in the projecting direction. Spring 7
Can be immersed inward against the resilience of the second through hole 10c, so that it does not hinder the display operation of the position 10d, which is the center of the second through hole 10c, and the perforation operation of the through hole 10.

Although the above-described piercing tools 20a and 20b are described as typical embodiments of the present invention, such piercing tools 20a and 20b correspond to the ninth and tenth aspects of the present invention. It shows an embodiment, and it goes without saying that various design changes are possible when implementing the present invention.

By the way, the perforation center display section 16 for determining the position 10d of the perforation center of the second perforation 10c although the perforation tool 20 does not have the cover body 7 or has the cover body 7 is provided. When the through hole 10 after the second through hole is pierced in the wall material 8 by using a piercing tool having no function as the Through-hole center indicator 1 for indicating position on wall material 9
As 6, the gauge 18 can be used.

The gauge members 18a and 18b of the embodiment shown in a schematic perspective view in FIG. 20 or FIG. 21 are provided with a positioning portion 16 which is positioned with a positioning portion 9b provided in the wiring box 9.
a, and one or more display portions 16b which are provided at a predetermined distance from the alignment portion 16a and indicate the position 10d of the center of the hole of the second through hole 10c on the wall surface. By positioning the positioning portion 16a with the positioning portion 9b facing the wall surface through the first through hole 10a formed in the wall surface, the position 10d of the center of the second through hole 10c in the wall surface is obtained. It is configured to be able to do.

These gauges 18a and 18b show an embodiment corresponding to the invention described in claim 11. However, it is needless to say that the present invention is not limited to these, and various design changes are possible.

Next, a description will be given of the present invention according to a method of perforating an opening forming hole of a wiring box in which substantially the entirety of one side of a wiring box 9 disposed on the back of the wall faces the wall surface, with reference to the drawings.

FIGS. 22 to 26 show a wall standing upright on the front surface using the piercing tool of the above-described embodiment in order to expose substantially the entire side of the wiring box disposed on the back of the wall to the front of the wall. To 2
It is explanatory drawing for demonstrating the drilling method of a through-hole taking the case of drilling a through-hole of a location as an example, and the perforator is omitted and the whole is simplified and illustrated.

FIG. 22 is a vertical sectional view showing a state where metal is detected from the surface of the wall W at a position corresponding to the detected portion 9d provided in the wiring box 30. FIG. The first through hole 10a is formed in the wall W at the position of the wall W opposite to the position where the detected portion 9d exists using the tool 20.
FIG. 24 is a longitudinal sectional view of an essential part showing a state in which
The positioning of the piercing device 20 with the positioning portion (also serving as the boss portion) 9a of the wiring box 30 exposed on the wall surface by the first through-hole 10a using the piercing device 20 also serving as the through-hole center display device 16. The position 16d (center axis 2) of the second through-hole 10c provided by the display unit 16b of the display 16 provided at a predetermined interval from the positioning unit 16a is determined. FIG. 25 is a vertical cross-sectional view of a main part showing a displayed state, and FIG. 25 also uses a piercing tool 20 to move a through hole 10 c centering on a center position 10 d of the second through hole with respect to the wall W. It is a principal part longitudinal sectional view which shows the state which perforated. It should be noted that the perforator 20 is not shown except for parts necessary for the description.

As described above, the gripping portion of the rotary shaft 1 is gripped by the chucking portion of a hand-held rotary drive tool (not shown) and is driven to rotate by the rotary drive tool. The rotating shaft 1 is inserted through a center through hole of a body provided concentrically with a through hole formed in a wall material, and is removably fixed to the body. Both sides of the body are separated from the center through hole by a predetermined distance. The blade bracket 3 to which the perforation blade 4 is attached is detachably fixed at a position opposite to the above, so that these are integrally rotated by the driving rotation of the rotary shaft 1. I have. Accordingly, each of the drilling blades 4 can rotate while drawing the same circular locus about the center of the center shaft 2, and the distance between the center shaft 2 and the blade bracket 3 can be freely set. In addition, through holes having different diameters can be formed.

First, as shown in FIG. 22, a detector 9d provided at an eccentric position of a wiring box disposed on the back of a wall and previously provided with a metal foil or a magnet can be detected from a wall surface. When the tip 2c provided at the tip of the center shaft 2 is pressed against the detected position of the detected portion 9d, the tip 2c enters the surface of the wall material 8 and pierces, thereby causing the first transparent material to pierce. It functions as a positioning 10b for fixing the center position of the hole 10a. That is, the center of the center shaft 2 is not displaced, and the through hole 1 is accurately formed.
0 can be passed through.

Next, as shown in FIG.
When the whole is pressed against the wall material 8, a coil spring (elastic body) 1d is provided inside the housing, and the center shaft 2 is constantly urged in the protruding direction. The center shaft 2 can be immersed inside the housing against the resilience of the spring 1d with the center shaft 2 kept in contact with the surface, and the center of the cover body 7 is positioned at a position corresponding to the outer periphery of the through hole 10a. The end 7f can be abutted. The cover body 7 functions as a scattering prevention cover for chips generated when the through holes 10 are formed in the wall member 8. In addition,
At this time, the perforation blades 4 are fixed at positions appropriately adjusted so as not to come into contact with the wall material 8, so that the perforation blades 4 do not hit the wall material 8. When the entire piercing tool 20 is further pressed toward the wall material 8, the center shaft 2 is spring-loaded while the point 2c is kept in the surface of the wall material 8.
Can be further immersed inside the housing against the resilience of the above, and all of the piercing blades 4 can abut against the wall material 8.

Next, when the whole of the piercing tool 20 is further pushed toward the wall material 8 while rotating the hand-held type rotary drive tool, the point 2c is kept in the surface of the wall material 8. 23, only the perforation blade 4 can be advanced, and as shown in FIG. 23, the perforation blade 4 can perforate the first round hole 10a in a wall shape by the perforation blade 4, and the wiring box 9 disposed on the back of the wall can be formed. Part of one side can be exposed to the wall surface.

At this time, the moving distance of the main body block 6, that is, the piercing blade 4 is limited by the cutting depth adjusting device 13 so as to be substantially the same as the thickness of the wall material 8. Due to moving forward beyond the thickness,
It is possible to prevent the wiring box 9 itself, the cables housed in the wiring box 9, the cables arranged behind the wall, and the like from being damaged.

When the drilling is completed, the cut waste material remains in a form in which the point 7c provided on the center shaft 2 is pierced into the center of the through hole 10, so that the cut waste material is pierced through the point 7c from the through hole 10. Can be removed and destroyed.

Further, chips from the wall member 8 can be discarded from the opening 7a formed in the cover body 7 as appropriate.

In the piercing tool of this embodiment, the distance from the axis of the center shaft to the outer periphery of the leg is, for example, a boss portion provided in the wiring box and facing the wall surface by the first through hole. 24, and the distance between the center of the second through hole and the position of the center of the perforation is configured to be the same length. Therefore, as shown in FIG. If combined, the second through hole 10
The position 10d of the center of perforation c can be easily obtained outside the peripheral edge of the leg 7b.

That is, as shown in FIG. 25, the point 2c is inserted into the position 10d of the center of the hole of the second through hole 10c thus obtained in the same manner as described above, and the wall material 8 is made transparent. When the hole 10 is provided, the second through hole 10c can be reliably formed.

In the method for drilling the opening forming hole of the wiring box in the embodiment shown in FIG. 4 in which almost the entire opening of the wiring box faces the wall surface, first, as described above, The first through hole 10a is pierced with the existence position of the detected part 9d detected from the center as the center of the piercing. Then, for example, a center shaft of a piercing tool of an embodiment to be described later is engaged with a positioning portion 10b provided on the upper surface of the detected portion 9d,
After the position 10d of the center of the perforation of the second through hole determined from the outer wall of the cover body is displayed at a predetermined position on the right side of the detected portion 9d on the wall surface, the position 10d of the center of the perforation is set as the center of the perforation. By drilling the through hole 10c to the right of the first through hole 10a, substantially the entire opening of the wiring box 9 is exposed to the wall surface.

In this way, the wall material 8 is placed so that substantially the entirety of one side of the wiring box 30 arranged on the back of the wall faces the wall surface.
A plurality of through holes 10 can be formed in
After drilling all 0's, as shown in FIG. 26, if the detected part 2a is of a break-up type, it is discarded,
If it is a reusable type that can be detachably hooked, remove it from the wiring box and reuse it. Note that this operation may be performed simultaneously with the discarding of the cutout waste material.

By the way, according to the piercing tool 20b of the embodiment provided with the locating pin 7g elastically supported by the spring 7h on the leg 7b of the cover body 7, the essential part is shown in a sectional view of the essential part in FIG. As described above, the positioning portion 9b of the wiring box 9 exposed on the wall surface by the first through hole 10a.
When the locating pin 7g is engaged with the piercing tool 20a
Of the center shaft 2 of the second through hole 10c can be arranged at the position 10d which is the center of the hole of the second through hole 10c.
Spring 1 (not shown) that supports both
d and 7h can be immersed inward against the resilience of the second through hole. The second through hole 10d having the center axis 2 as the center of drilling without realigning the center axis 2 with the position 10d of the hole center.
Can be drilled.

On the other hand, in the case of the piercing tool 20a of the embodiment in which the locating pin 7h is not provided on the leg 7b of the cover body 7, as shown in FIG. When the peripheral edge 7f of the leg 7b of the cover 7 is aligned with the top end 9i (positioning portion 9b) of the wiring box 9 exposed on the wall surface by the first through hole 10a, the cover 7 is moved from the center axis 2 to the cover 7. L to the peripheral edge 7f of the outer wall of
Is located at the same distance L as the distance from the positioning portion 9b to the center of the second through-hole, so that the center shaft 2 of the piercing tool 20a can be arranged at the position 10d which is the center of the second through-hole, and In other words, after displaying the position 10d of the center of the perforation of the second through-hole on the wall surface, the center axis 2 is not adjusted to the position 10d of the center of the through-hole without re-aligning the center axis 2 with the center of the second through-hole. Two through holes 10c can be formed.

Next, when the perforating tool 20 does not have the function as the through-hole center indicating tool 16, if the gauge 18 is used, the position of the center of the perforating center of the second through-hole is displayed on the wall surface. 10d can be accurately displayed, and the opening forming hole of the wiring box can be drilled at a desired position of the wall material.

In the method of piercing the opening forming hole of the wiring box, the procedure up to piercing the first through hole 10a with the existing position of the detected portion 9d detected from the wall surface as the center of piercing is the same as the piercing tool 20 described above. Since the method is the same as the method of piercing the through hole 10 in the wall material by using, the description will not be repeated.

Next, as shown in FIGS. 29 and 30,
When the positioning portion 16a is aligned with the positioning portion 9b facing the wall surface through the first through hole 10a formed in the wall material 8, the display portion 16b is separated from the positioning portion 16a by a predetermined distance. Since it is provided, the exact position of the center of the perforation of the second through-hole 10c can be easily dot-displayed on the wall surface by the writing tool by the display unit 16b, and the position of the center of the perforation of the second through-hole obtained in this manner is obtained. If the through hole 10 is formed in the wall member 8 in the same manner as described above in 10d, a predetermined perfect circular second through hole can be quickly and easily formed at a predetermined accurate position.

In the gauge 18a of the embodiment, as shown by the arrow in FIG. 29, the gauge 18a is rotated while the positioning portion 16a is engaged with the positioning portion 9b provided on the wiring box 9, and The position 10d (three places) of the center of the perforation of the second through-hole 10c can be sequentially dot-displayed on the wall surface with a writing implement.

Next, an embodiment of piercing using another gauge is shown in FIGS. In the figure, a gauge 18c is formed by attaching a positioning sheet 16a made of a round bar bent in a substantially U-shape to a display sheet 18d made of a synthetic resin sheet or the like.
a display unit 1 having a display hole for displaying the center position 10d of the display c
6b is provided. In addition, as shown in FIG. 32, the round bar that is the alignment portion 16a is used by being inserted into the mounting hole 18e provided in the display sheet 18d, but may be integrated with the display sheet 18d. Good. However, it is preferable to separate them in consideration of storage and the like. Also, if a transparent resin sheet material is used for the display sheet 18d, the position of the boss 9c and the like inside the wiring box body 9 can be visually recognized, which is convenient.

Next, the gauge 18 constructed as described above will be described.
A procedure for forming a through hole in the wall material 8 using c will be described. First, the detected part 9 of the wiring box body 9 is seen from the wall surface.
33, a first through-hole 10a, which is a ball-shaped hole, as shown in FIG. 33, is formed in the wall member 8 using a piercing tool capable of drilling a ball-shaped hole at a time. As a result, the bosses 9c serving as two upper and lower positioning portions face the wall surface from the first through hole 10a of the wall material 8, and as shown in FIG. 34, the gauges are provided in the two boss members 9c from the wall surface. A round bar, which is the positioning portion 16a of the tool 18c, is fitted. Then, gauge tool 1
Since two center positions 10d of the second through hole 10c are displayed by the display portion 16b of 8c, two positions are centered on this position.
If the second through holes 10c are formed, a total of four bosses 9c for mounting the wiring device mounting frame face the wall surface. This embodiment corresponds to the embodiment of claim 13 and may correspond to the embodiment of claim 12.

Incidentally, the above embodiment shows a case where a piercing tool which can pierce the daruma-shaped first through hole 10a at a time is used. However, the same procedure as shown in FIGS. Two circular holes may be separately drilled before and after to form a ball-shaped hole. That is, first, as shown in FIG. 35, after the first through hole 10a is formed, one boss body 9 is formed.
By using a gauge tool 18a or the like shown in FIG. 20 as a positioning portion for c, by piercing the first second through-hole 10e,
It is also possible to form a ball-shaped hole similar to that shown in FIG. This embodiment corresponds to the aspect of claim 14 and may correspond to the aspect of claim 12.

Finally, by using the piercing device 20 of the above-described embodiment, as shown in FIG. 36, for example, the through-hole 10 is directly pierced in the wall material covering the front surface, so that the piercing device 10 is disposed behind the wall. The cable or the wiring device 15b connected to the cable may be pulled out to the wall surface to face the wall surface, and fixed to the wall member 8 with the wiring device mounting frame 15a interposed.

The method of perforating these through holes 10 is described in claim 1
7 shows an embodiment of the method for punching an opening forming hole of a wiring box according to any one of Items 1 to 6.

By the way, before piercing the wall material 8 so that the opening of the wiring box 30 installed on the back of the wall faces the surface of the wall, the detection position of the detected portion 9d of the wiring box 30 can be confirmed. This will be described with reference to FIGS. In FIGS. 37 to 39, the opening 41 is formed in such a size that the main body 42 made of a synthetic resin can be gripped. A center drill 43 having an outer diameter of about 1.5 to 2.0 mm protrudes. Further, a scale 44 made of a metal plate material or a resin plate material is housed in the housing recess 42 a of the main body 42, and the housing recess 42 a
Is rotatable up to 90 degrees in a direction parallel to the bottom surface. Here, the center drill 43 and the tip 44 of the scale 44 after being pulled out from the main body 42 and rotated by 90 degrees.
The distance between the second through hole 10a and the center part 10d of the second through hole 10c is set to a size that matches the distance between the positioning part 9a also serving as the boss part of the wiring box body 9 and the center position 10d of the second through hole 10c. The metal rod 46 is formed by bending an end of a magnetic metal rod having a diameter of about 1.2 mm into a hook shape.

In order to confirm the detection position of the detected portion 9d of the wiring box 30 by using the hole tool 41 and the metal rod 46 configured as described above, first, in FIG. Then, the position of the detected part 9d of the wiring box main body 9 attached to the back of the wall is detected, and the position is marked.

Next, as shown in FIGS. 41 and 42, a small hole 8a is formed in the wall material 8 at the position marked by using a hole opening tool 41. At this time, since the center drill 43 of the hole-opening tool 41 is formed of a hard steel wire or the like, the hole-opening tool 41 is pressed while being rotated left and right, thereby forming a wall made of a plywood, a gypsum board or the like. The material 8 can be easily drilled. When the wall material 8 is drilled in this way, the small holes 8
a has a hole diameter of about 1.5 to 2.0 mm.

Next, in FIG. 43, a metal rod 46 is inserted through the small hole 8a from the wall surface. At this time, if the positions of the detected portion 9d and the small holes 8a coincide with each other, the tip of the metal rod 46 is attracted by the magnetic force of the magnet of the detected portion 9d. It can be confirmed that it exists at a position opposite to. Although the metal rod 46 has a small diameter,
The presence or absence of magnetic attraction can be perceived by the feel of the fingertip.
On the other hand, if the detected portion 9d and the small hole 8a are displaced and separated from each other, the metal rod 46 is not magnetically attracted by the magnet when the small rod 8a is inserted into the small hole 8a. Can be confirmed to be out of the detected portion 9d.

After the position of the detected portion 9d can be confirmed in this manner, the center axis 2 of the piercing tool 20 is made to coincide with the small hole 8a, and this position is used as the center of the piercing hole to open the wiring box 30 as described above. First through-hole 1 to expose the surface to the wall surface
Drill 0a.

Here, before drilling the first through hole 10a, a small hole 8a for position confirmation is drilled in the wall material 8. However, if the detected positions match, the through hole 8a is drilled. The small holes 8a do not remain in the wall material 8 because they are removed together with the waste material cut off when drilling the holes. On the other hand, if the detected portion 9d does not exist at the position due to a detection error due to the small hole 8a being drilled, the small hole 8a is still formed in the wall material 8 even after the first through hole 10a is drilled.
May remain. However, since the small hole 8a is a very small hole having a hole diameter of about 1.5 to 2.0 mm, even if it remains in the wall material 8 as it is, it does not particularly hinder the appearance, and it is a defect in the appearance. Can be easily repaired.

Since the diameter of the small hole 8a is extremely small, even if the small hole 8a is positioned and the center axis 2 of the piercing tool 20 is aligned with the small hole 8a, the center shaft 2 moves within the small hole 8a to form the hole. The center position does not shift, and therefore does not hinder the positioning of the center shaft 2 at all.

Further, since the end of the metal rod 46 is bent in a hook shape, it is possible to prevent the metal rod 46 from being accidentally dropped to the back of the wall when inserted into the small hole 8a. The portion of the metal rod 46 bent in a hook shape to be inserted into the small hole 8a needs to be formed longer than the wall thickness, as a matter of course.

Next, by using the scale 44 of the opening tool 41, the center position 10d of the second through hole 10c can be easily obtained as shown in FIG. In FIG. 44, if the scale 44 of the hole opening tool 41 is pulled out and rotated by 90 degrees, the distance between the center drill 43 and the tip 44a of the scale 44 becomes equal to the positioning portion 9a also serving as the boss portion of the wiring box body 9 and the second transparent portion. Since the hole 10c is set so as to coincide with the center position 10d, the center drill 43 of the hole-opening tool 41 is inserted into the positioning portion 9a of the wiring box body 9, and the hole-opening tool 41 is set with this position as an axis. When the point 44a of the scale 44 is brought into contact with the wall material 8, this contact point is displayed as the center position 10d of the second through hole 10c.

That is, this hole-opening tool 41 is a gauge for determining the center position 10d of the second through-hole 10c, similarly to the case of the hole-opening tool 20 whose peripheral edge 7f indicates the center of the through-hole shown in FIG. It can also function as a tool. When the hole opening tool 41 is also used as a gauge tool, it corresponds to the aspect of claim 11, the center drill 43 corresponds to a positioning section of the claim, and the pointed end 44a of the scale 44 corresponds to a display section of the claim. Things.

By the way, the drilling tool 20 of the above embodiment is provided with a rotation preventing means such as a detent pin as shown in FIGS. 45 and 46 in order to ensure safety when the drilling blade 4 is replaced. Good to put. 45 and 46, a pair of through-holes 5c are formed at opposite ends of the rotating body 5 of the piercing device 20.
Is formed, and the bottom wall of the cover body 7 has the through hole 5.
A pair of insertion fittings 7i is provided at a position opposed to the cover body c. A rotation preventing pin 19 made of a round bar is inserted from the opening of the cover body 7, and the through hole 5c of the rotating body 5 is inserted. 7 can be inserted into the insertion portion 7i.

Now, in order to replace the drilling blade 4, first, the detent pin 19 is inserted through the through hole 5 c of the rotating body 5 of the drilling tool 20, and further inserted into the insertion portion 7 i of the cover 7. The rotation is stopped. Next, the cover member 7e is removed, the bolt 11 is loosened with a screwdriver, and the boring blade 4 is replaced. Next, the rotation preventing member 19 is removed, and the rotating body 5 is rotated by 180 degrees.
The detent pin 19 is inserted again, and the perforating blade 4 on the opposite side is similarly replaced. After that, the cover member 7e is attached, the detent pin 19 is removed, and the piercing tool 20 is used.

By using this rotation preventing means,
While the bolt 11 is loosened or tightened with a screwdriver, the drilling blade 4 is held in a fixed position. Therefore, when loosening or tightening, the driver accidentally comes off the bolt 11 and comes off the rotating body. It is possible to avoid the danger that the hand 5 will turn sharply and hurt the hand.

[0088]

According to the first to sixth aspects of the present invention, it is not necessary to cut the wall material into a rectangular shape along the outer shape of the wiring box with a saw or a cutter. Substantially the entire front surface of the wiring box arranged on the back can easily, quickly and reliably reach the wall surface.

The wiring box according to any one of claims 7 to 9 is
The position where the wiring box located behind the wall is present can be easily detected via the detected portion, and the first through hole (first through hole) is defined as the center position of the hole to be detected. In order to determine the position of the center of the second through-hole when piercing a plurality of through-holes (second through-holes) in the wall material, the second through-hole can be drilled in the wall material. The second through hole can be drilled around the center of these drill holes by positioning the positioning portion to be used on the wall surface by drilling the first through hole. It is possible to provide a wiring box that can easily, quickly and surely face the table.

That is, unlike the related art, it is not necessary to cut the wall material into a rectangular shape along the outer shape of the wiring box with a saw or a cutter, and substantially the entire front surface of the wiring box disposed behind the wall is covered with the wall surface. Thus, it is possible to construct a method for forming an opening forming hole of a wiring box, which can be easily, quickly and reliably exposed.

The piercing tool according to the tenth or eleventh aspect can easily detect the position of the wiring box located on the back of the wall, and can easily detect the position of the second through-hole pierced in the wall material. It is possible to provide a position, and it is not necessary to cut the wall material into a square shape along the outer shape of the wiring box with a saw or a cutter, etc., so that a through hole can be quickly and reliably formed in the wall material. The method of drilling the opening forming hole is construction,
Thereby, it is possible to easily, quickly and reliably bring almost the entirety of one side of the wiring box disposed on the back of the wall to the surface of the wall.

[0092] In particular, in the piercing tool according to the eleventh aspect, the through-hole center display portion forms a cover body for preventing scattering of chips, so that the through-hole is formed in the wall material particularly at a work site. Scattering of chips generated during drilling can be prevented.

[0093] The gauge tool of claim 12 to claim 14 is
When the positioning portion is aligned with the positioning portion facing the wall surface through the first through hole formed in the wall material, the position of the center of the second through hole can be easily displayed on the wall surface by the display portion. That is, even if the piercing tool does not have the cover body, or a piercing tool having the cover body but not functioning as the through-hole center display unit for determining the position of the center of the second through-hole, The position of the center of the through hole can be easily displayed on the wall surface, and a predetermined perfect circular second through hole can be quickly and easily formed at a predetermined accurate position, thereby improving workability.

That is, unlike the related art, it is not necessary to cut the wall material into a rectangular shape along the outer shape of the wiring box with a saw or a cutter, and substantially the entire front surface of the wiring box disposed behind the wall is covered with the wall surface. Thus, it is possible to construct a method for forming an opening forming hole of a wiring box, which can be easily, quickly and reliably exposed.

The object to be detected according to the fifteenth aspect can be removably mounted on a projecting body such as a boss body provided in advance in the wiring box, and can be reused without waste. In addition, since it has both a function of detecting its own position from the wall surface and a function of providing a center position of the first through-hole, the center of the first through-hole is determined by the wall surface. And the first through-hole can be drilled at an accurate drilling position on the wall surface.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a wiring box according to an embodiment of the present invention is attached to a support.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view showing a wiring box according to another embodiment of the present invention.

FIG. 4 is a plan view showing a wiring box according to still another embodiment of the present invention.

FIG. 5 is a plan view showing a wiring box according to still another embodiment of the present invention.

FIG. 6 is a sectional view showing an AA section in FIG. 5;

FIG. 7 is a sectional view showing a BB section of FIG. 5;

8 is a perspective view of the detected part provided in the wiring box of FIG. 5 in which the detected part is removed from the wiring box.

FIG. 9 is a vertical cross-sectional view showing a state where the detected part removed from the wiring box is mounted on a different wiring box;

FIG. 10 is a plan view showing a detection target of one embodiment of the present invention.

FIG. 11 is a plan view showing a state where the detection target device of FIG. 10 is attached to a projecting body (boss body) provided in a wiring box.

FIG. 12 is a partially cutaway front view showing a punch according to an embodiment of the present invention.

FIG. 13 is a partially cutaway side view showing the punch of FIG. 12;

FIG. 14 is a perspective view showing a main body block incorporated in the punch of FIG. 12;

15 (a) is a front view of a rotating body incorporated in the main body block of FIG. 14, and FIG. 15 (b) is a plan view thereof.

FIG. 16 is a partially cutaway front view showing a rotation axis and a center axis incorporated in the main body block of FIG. 14;

17 (a) is a plan view of a blade bracket incorporated in the main body block of FIG. 14, and FIG.
(B) is a side view showing the side to which a perforation blade is screwed.

FIG. 18 is a perspective view of a cover body incorporated in the drill of FIG. 12;

FIG. 19 is a sectional view of a main part showing a piercing tool according to another embodiment of the present invention, one end of which is elastically supported by a leg of a cover body and the other end protrudes forward from the leg of the cover body. Except for having a locating pin provided in an inclined state, the configuration is substantially the same as that of the piercing tool shown in FIG.

FIG. 20 is a schematic perspective view showing a gauge tool according to one embodiment of the present invention.

FIG. 21 is a schematic perspective view showing a gauge tool according to another embodiment of the present invention.

FIG. 22 is a vertical cross-sectional view showing a state in which a portion of the wall corresponding to the detected portion of the wiring box is detected from the wall surface by a detector.

FIG. 23 is a longitudinal sectional view showing a state in which a first through-hole having a center corresponding to the position to be detected of the wiring box is drilled in the wall using a drill. is there.

FIG. 24 is a longitudinal sectional view showing a state in which the center of the second through hole is displayed by abutting the tip of the center shaft on a positioning portion (boss portion) provided in the wiring box; FIG.

FIG. 25 is a diagram illustrating a state in which a second through-hole having the center of the perforation center of the second through-hole indicated on the wall as a perforation center is perforated with the wall using a piercing tool. FIG.

FIG. 26 is a diagram showing a state in which a plurality of through-holes are formed in a wall material so that substantially the entirety of one side of a wiring box disposed on the back of the wall is exposed to the surface of the wall; It is a longitudinal cross-sectional view showing a state. In the case of a reusable type that is detachably hooked, it is removed from the wiring box and reused.

FIG. 27 shows the position of the center of the second through-hole on the wall surface using the piercing tool of FIG. 19 provided with the locating pin on the leg of the cover body, and then places the center at the center of the through-hole. It is principal part sectional drawing which shows the state which drilled the 2nd through-hole centering on this center axis | shaft, without realigning a shaft.

FIG. 28 shows a state in which the outside of the legs of the cover body is aligned with the positioning portions exposed on the wall surface by using the piercing tool shown in FIG. 12 without the locating pin on the legs of the cover body. It is a principal part sectional view showing the state where the 2nd penetration hole which makes the center axis of the piercing tool the center of piercing is pierced in the state.

FIG. 29 is an explanatory diagram schematically illustrating a method of using the gauge tool of FIG. 20;

FIG. 30 is an explanatory diagram schematically illustrating a method of using the gauge tool of FIG. 21;

FIG. 31 is a perspective view showing a gauge tool according to an embodiment of the present invention.

FIG. 32 is an exploded perspective view of the gauge device of FIG. 31;

FIG. 33 is a front view showing a state in which a first through hole is formed in a wall member prior to use of the gauge tool of FIG. 31;

FIG. 34 is a front view showing a state where the gage of FIG. 31 is attached.

FIG. 35 is a front view showing a state in which a first through hole has been formed in a wall material prior to use of the gauge device of FIG. 31;

FIG. 36 is an explanatory view for explaining another embodiment related to the use of the piercing device of the embodiment of the present invention.

FIG. 37 is a perspective view showing a hole opening tool according to an embodiment of the present invention.

FIG. 38 is a front view showing a state where the scale of the opening tool of FIG. 37 is rotated.

FIG. 39 is a perspective view showing a metal rod according to an embodiment of the present invention.

FIG. 40 is a vertical cross-sectional view showing a state of detecting a detected part of the wiring box main body behind the wall.

FIG. 41 is a longitudinal sectional view showing a state in which a small hole is formed in a wall material using the opening tool of FIG. 37.

FIG. 42 is a longitudinal sectional view showing a state in which a small hole is formed in a wall material using the opening tool of FIG. 37;

FIG. 43 is a vertical cross-sectional view showing a state in which the position of the detected portion of the wiring box main body behind the wall is confirmed using the metal rod of FIG. 39;

FIG. 44 is a vertical cross-sectional view showing a state in which the center position of the second through hole is displayed using the opening tool of FIG. 37.

FIG. 45 is a perspective view showing a detent pin in the drill according to the embodiment of the present invention.

FIG. 46 is a perspective view showing a state in which a drilling blade is replaced using a rotation preventing pin in the drilling tool according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rotating shaft 1a ... Grip part 1b ... Housing 1c ... Attachment part 1d ... Spring (elastic body) 2 ... Center shaft 2a ... Attachment part 2b ... Stopper ring (detachment means) 2c ... Pointed end 2d ... First contact Part 2e ... First contact part 3 ... Blade body bracket 3a ... Female screw 3b ... Through hole 4 ... Punching blade 5 ... Rotating body 5a ... Center through hole 5b ... Fixed part 6 ... Main body block 7 ... Cover body 7a ... Opening part 7b ... leg 7c ... insertion hole 7d ... cylindrical part 7e ... lid member 7f ... peripheral edge 7g ... locating pin 7h ... spring 8 ... wall material 8a ... small hole 9 ... wiring box main body 9a ... positioning part (also serves as a boss body) 9b ... Positioning part 9c ... Boss body 9c '... Boss body 9d ... Detected part 9e ... Fixing means 9f ... Mounted part 9g ... Protrusion body 9h ... Connecting part 9i ... One side top end 10 ... Through hole 10a ... First through hole 10b: Inside the first through hole Center position 10c Second through hole 10d Center position of second through hole 10e Initial first through hole 11 Bolt 12 Alignment unit 13 Cut depth adjusting device 14 Detector 15a Wiring device mounting frame 15b: Wiring device 16: Through-hole center display portion 16a: Alignment portion 16b: Display portion 17: Detected device 17a: Mounting portion 17b: Detected portion 17c: Mounting portion 17d: Connecting portion 18: Gauge device 18a: Gauge device 18b: Gauge tool 18c: Gauge tool 19: Detent pin 20: Punch tool 20a: Punch tool 20b: Punch tool 30: Wiring box 30a: Wiring box 30b: Wiring box 30c: Wiring box 30d: Wiring box 30e: Wiring box 30f ... wiring box 30g ... wiring box 41 ... opening tool 43 ... center drill 46 ... metal rod

Claims (15)

[Claims] 1. A method of perforating an opening forming hole of a wiring box for causing a front surface of a wiring box disposed on the back of a wall to face a wall surface by perforating a plurality of through holes in a wall material. A first through-hole is drilled in the wall material with the detection position of the detected part provided so as to be detectable from the wall surface as the center of the perforation, and then the wiring box is exposed on the wall surface by the first through-hole. The positioning portion of the through hole center indicator is aligned with the positioning portion, and the position determined by the display portion provided at a predetermined interval from the alignment portion of the through hole center indicator is the center of the perforation. A method for drilling an opening forming hole of a wiring box, characterized by drilling two through holes. 2. The method according to claim 1, wherein the through-hole center indicator is provided in a punch used for drilling a through-hole. . 3. The through hole center display device, wherein the positioning portion is constituted by a center portion of a punch used for forming a through hole, and the display portion is separated from the center portion by a predetermined distance. 3. The method according to claim 2, wherein the hole is formed integrally with an outer wall of a cover body to prevent scattering of chips generated when drilling the through hole. 4. The method of perforating an opening forming hole of a wiring box, wherein the positioning portion of the wiring box exposed on the wall surface by the first through hole is provided at a predetermined distance from a center of the drilling tool. 3. The method according to claim 2, wherein the second alignment hole having the center portion as a drilling center is drilled while the alignment portion is aligned and the center portion is drilled as it is. 5. The method according to claim 1, wherein the positioning portion also serves as a boss portion for fixing a wiring device mounting frame. . 6. Prior to drilling the first through hole in a wall material, a detected portion provided in the wiring box is magnetically detected from a wall surface, and a detection position of the detected portion in the wall material. A hole is formed in the hole, and then a metal rod is inserted into the hole to check the position of the detected portion by the presence or absence of magnetic attraction with the detected portion. 6. The method according to claim 5, wherein the hole is formed in the wiring box. 7. A wiring box that is disposed on the back of a wall and has a plurality of through holes formed in a wall material, so that substantially the entire front surface faces the wall surface, and is provided inside so as to be detectable from the wall surface. The detected part, and the position of the detected part detected from the wall surface is exposed to the wall surface through the first through hole formed in the wall material with the center of the hole as the center of the perforation, and the wall material has one or more second holes. A wiring box, comprising: a positioning portion used to determine a position of a center of a hole when the through hole is formed. 8. A wiring box that is arranged on the back of a wall and has a plurality of through holes formed in the wall material so that substantially the entire front surface faces the wall surface, and a detection target that can be detected from the wall surface is provided. A mounting portion to which the detection device provided is removably mounted, and a position of the detection portion detected from the wall surface is exposed to the wall surface through a first through hole formed in the wall material with the center of the hole as the center of the hole. And a positioning portion used to determine the position of the center of the perforation when the one or more second through-holes are perforated in the wall material. 9. The wiring box according to claim 7, wherein the positioning portion also serves as a boss portion for fixing the wiring device mounting frame. 10. A piercing tool for piercing a through hole in a wall material so that substantially the entire front surface of a wiring box disposed on the back of the wall faces the surface of the wall. A center portion serving as a center of rotation when drilling the through-hole, a drilling blade rotating around the center portion to drill a wall material, and a wall material facing a part of the front surface of the wiring box to a wall surface A positioning portion for positioning through a first through hole formed in the wiring box with a positioning portion provided in the wiring box; a perforation center of a second through hole provided at a predetermined distance from the positioning portion; And a display unit for providing the position of the wall surface on the wall surface. 11. The positioning unit is formed by a tip of a center portion, and the display unit is formed integrally with an outer wall of a cover body for preventing scattering of chips generated when drilling a through hole. The piercing device according to claim 10, wherein 12. A gauge tool used for indicating the position of the center of a through hole formed in a wall material so that substantially the entire front surface of a wiring box disposed on the back of the wall faces the wall surface. A position to be aligned with a positioning portion provided on the wiring box, which is exposed on the wall surface through a first through hole formed in the wall material so that a part of the front surface of the wiring box faces the wall surface. A gauge tool comprising: a fitting portion; and a display portion provided at a predetermined distance from the positioning portion and providing a position of a center of the second through hole on a wall surface. 13. A gauge tool used for indicating the position of the center of a through hole formed in a wall material so that substantially the entire front surface of a wiring box disposed on the back of the wall faces the wall surface. A plurality of positioning portions provided on the wiring box exposed on the wall surface through first through holes formed in the wall material so that a part of the front surface of the wiring box faces the wall surface, respectively. A plurality of positioning portions to be positioned, and a display portion provided at a predetermined distance from the plurality of positioning portions and providing a position of the center of the second through hole on the wall surface. Gauge tool characterized by becoming. 14. A gauge tool used for indicating the position of the center of a through hole formed in a wall material so that substantially the entire front surface of a wiring box disposed on the back of the wall faces the surface of the wall. A first positioning portion provided on the wiring box exposed on the wall surface through a first through hole formed in the wall material so that a part of the front surface of the wiring box faces the wall surface, and A plurality of alignments each of which is aligned with a second positioning portion provided in the wiring box exposed on a wall surface through a second through hole formed in the wall material with reference to the first positioning portion. And a display unit provided at a predetermined distance from the plurality of alignment units and providing the center of the center of the other second through-hole on the wall surface. Gauge tool. 15. An object to be detected which provides a center position of a first first through hole formed in a wall material so that substantially the entire front surface of a wiring box disposed on the back of the wall faces the wall surface. And a mounting portion removably mounted on the wiring box, and a detected portion detectable from the wall surface, and when the detected portion mounts the detected device on the wiring box, Positioning portions provided in the wiring box to provide a perforation center position of one or more second through holes to be subsequently drilled with respect to a wall material, are exposed on the wall surface through the first through holes. An object to be detected, wherein the object to be detected is arranged at a position where it can be obtained.