JP3403163B2 - Wiring box and member to be detected attached to the box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall body provided on the front surface of a box body only by circular perforation, and a mounting portion for mounting a wiring device is exposed, and only the front surface of the box body is exposed to a wall surface. The present invention relates to a wiring box capable of forming a through hole, and a member to be detected attached to the wiring box.

[0002]

2. Description of the Related Art Conventionally, the following method has been used to cut out a wall body so that an opening on the front surface of an electric wiring box hidden inside the wall body faces the wall surface. A metal foil or magnet is provided in advance in a proper place on the box body, and the metal foil or magnet provided on the box body is detected by a detector capable of detecting metal or magnetism, and the box in the wall body is detected. The position of the main body was scribed, and a through hole corresponding to the opening of the box body was formed in the wall body using a saw or the like along the scribed line.

However, it is difficult to accurately mark the position of the opening of the box body on the wall by using the metal detection or the magnetic detection described above and the metal foil or the magnet provided on the box body as a reference. It is a little off from the normal position. Therefore, it is difficult to cut out the wall body so as to accurately correspond to the opening of the box body. Also,
It is troublesome to mark the opening shape of the box body on the wall body based on the position of the metal foil or the magnet provided on the box body. Further, in a rectangular box, it is very difficult to cut the wall body into this shape by using a saw or the like.

Further, Japanese Utility Model Publication No. 55-52755 discloses a wiring box having a rectangular box body provided with a detected member such as a magnet. Here, as shown in FIGS. 27 and 28, a magnet 52 is provided in the center of the box body 51, and the center of the box body 51 is detected from the wall surface by the position of the magnet 52, and the box is placed on the wall. There is a method in which a shape is scribed and a wall is cut along the scoring line into a box shape to form a through hole using a saw or the like. In a box in which the magnet 52 is provided in such a central portion, the position of the magnet 52 is detected, and one circular hole is formed in the wall body on the front surface of the box body 51 centering on the detected position by using a punching tool. Perforate a pair of bosses 53
When it is made to face the wall surface, a large through hole H ′ protruding from the box body 51 is punched (FIG. 27). On the other hand, if a small through hole H ″ that does not protrude from the box body 51 is formed (FIG. 28), the pair of bosses 53 cannot be exposed to the wall surface. If only the detected member is provided in the center, the pair of bosses 53 faces the wall surface, the mounting portion for mounting the wiring device is exposed ( condition 1 ), and only the front surface of the box body faces the wall surface. It is not possible to drill a circular hole ( condition 2 ) as described above.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention is directed to the position of a detected portion provided on the box body,
Also, by devising the shape of the box body itself, the mounting part for mounting the wiring equipment is exposed on the wall body arranged on the front surface of the box body with only a minimum number of circular perforations, and only the front surface of the box body is covered with the wall surface. It is an object to make a through hole that can be exposed to a hole.

[0006]

DISCLOSURE OF THE INVENTION The present invention for solving this problem is a wiring box installed on the back of a wall, which is only one detectable object that can be detected from the surface of the wall and can be removed. Part, and the detected part has a plurality of circles partly overlapping with each other.
By the perforation , the mounting portion for mounting the wiring device is exposed, and a specific one of the plurality of circular perforations is formed so that a through hole that allows only the front surface of the box body to face the wall surface can be perforated.
The center of the box body, which is the center of the hole
It is characterized in that it is arranged inside the box body at a position where it is not placed , facing its own opening.

In order to form a through hole in which a mounting portion for mounting a wiring device is exposed on the front wall of the wiring box and the front surface of the box body faces the wall surface, metal or magnetism can be detected. The box inside the box body
The position of only one detected part that is located off center
Position, the circular hole centered at the detected position, and
Use the other position derived from the detection position as the drilling center
By superimposing a plurality of circular perforations with the circular perforations, through holes that satisfy the above two conditions 1 and 2 are perforated by a minimum number of circular perforation operations.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to Examples. FIG. 1 is a perspective view showing a state in which the wiring box B ₁ is attached to the column S, and FIG. 2 is a perspective view in which one through hole H is bored in the wall body W so that the inside of the box body M ₁ becomes a wall surface. FIG. 3 is a front view of a state in which it faces, FIG. 3 is a vertical cross-sectional view of a state in which the position of the magnet 6 provided on the box body M ₁ is magnetically detected on the wall surface, and FIG. FIG. 5 is a vertical cross-sectional view of a state in which a through hole H is drilled in the wall body W by using it, and FIG. 5 is a perspective view of the punch tool D. 1 to 3, a wiring box B ₁ has a cylindrical magnet-embedded body 2 at the center of a bottom wall 1 of a substantially circular box body M ₁ having a gently curved peripheral portion. Body M ₁
The bosses 4 are integrally formed so as to face the opening 3, and the pair of bosses 4 are provided so as to be close to the opposing portions of the peripheral wall 5. The pair of boss bodies 4 are formed to be lower than the magnet-embedded body 2 so as not to be scraped when a circular through hole H is punched in the wall body W by a punching tool D described later. At the tip of the magnet-embedded body 2, a magnet 6 as a member to be detected is embedded. In addition, the magnet-embedded body 2 has a through hole H in the wall body W.
After drilling, it is no longer needed. Therefore, the box body M
_A hole 1a larger than the inner diameter of the magnet-embedded body 2 is formed at the connecting portion of the bottom wall 1 of the magnet-embedded body 2 to facilitate breaking of the magnet-embedded body 2. A member capable of detecting the position from the wall surface may be attached to the tip of the magnet-embedded body 2, and a metal plate, a metal foil, or the like may be attached in addition to the magnet 6 described above. The wiring box B ₁ is attached to the column S via a pair of legs 7 that are integrally provided on the peripheral wall 5 of the box body M ₁ .

A through hole is bored in a wall W standing upright in front of the opening 3 of the box body M _1. The through hole exposes a mounting portion for mounting a wiring device, and moreover, the front surface of the box body M ₁ . It is necessary to have a shape that allows the wall surface to face. As a punching tool for punching such a through hole,
Various types are conceivable, one of which is shown in a perspective view in FIG. As shown in FIGS. 4 and 5, this punching tool D has a cylindrical cylinder body 11 fixedly mounted on an upper surface of a main body block 9 into which a central shaft 8 is inserted, and a piston 12 installed in the cylinder body 11. Is the central axis 8
The central shaft 8 is urged in the projecting direction by the restoring force of the compression spring 13 that is integrally attached to the upper end of the piston 12 and is elastically mounted between the piston 12 and the upper end of the cylinder body 11. A blade bracket 14 is provided on each of opposite sides of the body block 9 so that the fixing position can be adjusted.
5, the blade bodies 16 are attached to the bent portions 14a at the ends of the blade body brackets 14, respectively. By adjusting the mounting position of the blade bracket 14 with respect to the main body block 9, through holes having various inner diameters can be punched in the wall body W by one punching tool D. The tip of the central shaft 8 has a drill shape, and the drilling tool D is attached to the tip of the rotating shaft (not shown) of the electric drill via the shaft 17 integrally provided at the upper end of the cylinder body 11. The punching tool D is mounted and integrally rotated to be used.

As shown in FIG. 3, the wiring box B
_A wall body W is erected on the front surface of the opening 3 of the box body M ₁ of _{No. 1} , and the wiring box B ₁ is installed behind the wall of the wall body W. Outlets (not shown) attached from the wall surface side of the wall body W with the opening 3 of the box body M ₁ facing the wall surface, and an electric wire (not shown) drawn inside the box body M _1. ), A mounting portion for mounting a wiring device is exposed at a portion of the wall body W facing the opening 3 of the box body M ₁ corresponding to the opening 3.
Moreover, it is necessary to form a through hole having a shape in which the front surface of the box body M ₁ faces the wall surface.

Then, only by the circular punching by the punching tool D, the wall W erected on the front surface of the wiring box B ₁ is
The perforation that satisfies the above two conditions 1 and 2 is performed as follows. First, using the magnetic detector A as shown in FIG. 3, the bottom wall 1 of the box body M ₁ is
When the magnet 6 at the tip of the magnet embedded body 2 standing upright is magnetically detected from the wall surface and the detected position is marked on the wall surface of the wall body W, the detected position is the center of the circular hole. It becomes C. The center C of the perforation is the center of the box body M _{1 having} a substantially rectangular shape. Next, as shown in FIG. 4, the drilling tool D is attached to the tip of the rotary shaft of the electric drill, and the drill-like portion at the tip of the central axis 8 of the drilling tool D is used as the drilling center of the wall body W. C
When the whole punch D is pressed against the wall body W,
On the other hand, with the central shaft 8 kept in the positioned state and stopped, the pair of blade bodies 16 rotating at high speed advances toward the wall body W, and the circular through hole H is formed in the wall body W. It is perforated (see Figure 2). The radius of the through hole H is approximately half the length of one side of the substantially square peripheral wall 5, and the length that allows the inside of the box body M ₁ to be exposed to the maximum on the wall surface by one round perforation. That's it. By this one circular through hole H, the pair of upper and lower boss bodies 4 are exposed on the wall surface so that a wiring device can be attached, and only the inside of the box body M ₁ is exposed on the wall surface. After the single circular through hole H is formed in the wall W in this manner, the magnet-embedded body 2 is no longer needed, and thus the magnet-embedded body 2 is broken off at the base end thereof. After the unnecessary magnet burying body 2 is broken off, electric wiring is performed in the wiring box B ₁ . In this wiring box B ₁ , two wiring devices 18 are arranged in the lateral direction at the position shown by the chain double-dashed line in FIG.

Next, the wiring box B ₂ will be described. FIG. 6 is a perspective view showing a state where the wiring box B ₂ is attached to the column S, and FIG. 7 is a front view showing a state where the first circular through hole H is formed in the wall body W. 9 is a front view showing a state in which two circular through holes H that also overlap each other are formed in the wall W, and FIG. 9 is a second through hole H in the wall W.
FIG. 5 is a vertical cross-sectional view showing a state in which a hole is drilled. The above wiring
The same parts as those of the box B ₁ are denoted by the same reference numerals, and only different parts will be described in detail while avoiding redundant description. In FIGS. 6 to 9, the wiring box B ₂ has two wiring devices 18 arranged at predetermined intervals in the lateral direction, so that the box body M ₂ has a rectangular shape. It has a track shape in which semi-circular parts are connected to both ends of the part, and a pair of magnet-embedded bodies 2 are provided on the bottom wall 1 of the box body M ₂ at predetermined intervals, and
Two pairs of upper and lower boss bodies 4 are provided.
The pair of magnet-embedded bodies 2 are arranged at the centers of the respective semicircular portions in the bottom wall 1 of the box-shaped box body M ₂ . The structure of the magnet embedded body 2 is the same as that described above.

Then, in order to perforate a through hole satisfying the above two conditions 1 and 2 in the wall body W standing upright on the front surface of the wiring box B ₂ only by the perforating tool D, the following procedure is performed. Do it. First, the position of each magnet 6 is detected by using the magnetic detector A, and each position is marked on the wall surface portion of the wall body W. These positions are the center of the two circular holes. It becomes C ₁ and C ₂ . Then, as shown in FIG.
A wall W is formed by the punching tool D with one of the drilling centers C ₁ as the center.
First, a circular through hole H is drilled. As a result, of the two pairs of boss bodies 4 that are paired up and down, one pair of boss bodies 4 is exposed on the wall surface. Then, as shown in FIG. 9, when the second circular through hole H is bored in the wall W centering on the other bore center C ₂ , the other one of the two pairs of bosses 4 is formed. The boss body 4 is exposed on the wall surface. As a result, as shown in FIG. 8, the two circular through holes H are overlapped in the lateral direction, and all the two pairs of boss bodies 4 are exposed on the wall surface. A synthetic through hole that is exposed and only the front surface of the box body M ₂ is exposed on the wall surface is punched. The radius of the through hole H is almost the same as the radius of the semi-circular portion of the track-shaped peripheral wall 5, and the inner surface of the box body M ₂ can be maximally exposed to the wall surface by two round perforations. Is the length.

The wiring box B ₃ shown in FIG.
A boss body 4 is provided on each of the upper and lower ends of the bottom wall 1 of the vertically long rectangular box body M ₃ , and two magnet-embedded bodies 2 are projected on a line segment connecting the boss bodies 4. is there. Then, the position of each magnet 6 embedded in the tip ends of the two magnet embedded bodies 2 is detected by the magnetic detector A, and when the wall surface of the wall body W is marked, these positions are two circles. The perforation centers of the perforations are C ₁ and C ₂ . Then, when two circular through holes H are bored in the wall W around these bore centers C ₁ and C _{2, each} through hole H is polymerized in the vertical direction, and the above two conditions are satisfied. A filling synthetic through hole is drilled. The radius of the through hole H is a rectangular box body M formed by two circular perforations.
It is a length that can maximize the inside of ₃ to face the wall surface. Incidentally, the wiring box B _3, one of the wiring devices 18 is arranged at the position indicated by the two-dot chain line in FIG. 10.

The wiring box B shown in FIG.
_In the square-shaped box main body M ₄ , two pairs of upper and lower boss bodies 4 are provided close to the peripheral wall 5 on the bottom wall 1 of the box body M _4. Two magnet-embedded bodies 2 are provided so as to project on the connecting line segment, and a total of four magnet-embedded bodies 2 are provided. Then, with the magnetic detector A,
When the positions of the magnets 6 embedded in the tip of the magnet embedded body 2 of the book are detected and marked on the wall surface of the wall body W, these positions are the perforation centers C _{1 to} C of the four circular perforations. It becomes ₄ . And
When four circular through holes H are bored in the wall W around these bore centers C _{1 to} C _{4, each} through hole H is polymerized in both the vertical direction and the lateral direction, and the above two conditions are satisfied. 1,2
A synthetic through hole that fills is drilled. The radius of this through hole H is
The length is such that the inside of the square box body M ₄ can be maximally exposed to the wall surface by four round perforations. In this wiring box B ₄ , two wiring devices 18 are arranged at the positions shown by the chain double-dashed line in FIG.

In addition, FIGS. 12 to 14 show a wiring box B _{5 to} which a separate object E ₁ can be removably mounted.
It is shown. The detected device E ₁ is made entirely of resin, and semi-cylindrical fittings 22 are integrally provided at both ends of the detected device body 21 in the longitudinal direction.
The two magnets 23 are embedded in the upper surface of 1 at predetermined intervals along the longitudinal direction thereof. On the other hand, the box body M ₅ of the wiring box B ₅ has a vertically long rectangular shape, and inside the respective short sides of the peripheral wall 5, there are mounted parts 24 which also serve as bosses for mounting wiring devices. It is provided integrally. The fitting body 22 that constitutes the detection target E ₁ has a shape that can be fitted inside the mounting portion 24. Further, the segment positions of two magnets 23 which are embedded in the detection device body 21 of the detecting device E ₁ is connecting in a state of mounting the該探knowledge tool E ₁ in the box body M _5, a pair of the mounting portion 24 Located on top.

Then, using a magnetic detector, the positions of the two magnets 23 embedded in the object to be detected E ₁ are detected from the wall surface, and the respective drilling centers C ₁ and C ₂ are marked on the wall surface. . After that,
As shown in FIG. 13, two circular through holes H having a radius corresponding to the length of the short side portion of the peripheral wall 5 of the box body M ₅ centering on each of the drilling centers C ₁ and C ₂ are formed. Perforate the wall W. As a result, the two circular through holes H are vertically overlapped with each other to form a synthetic through hole that satisfies the above two conditions 1 and 2 . Thus, after perforating the synthetic apertures, is taken out to be detected device E ₁ that is fitted to each of the mounting portion 24 of the box body M ₅ with the wall table, the to-be-detected member E ₁ Reuse.

Further, FIG. 15 shows a wiring box B ₆ to which a separate object E ₂ can be removably mounted.
It The detected tool E ₂ has a structure in which the magnet 6 is embedded in the tip of the magnet embedded body 2 and the male screw 25 is provided in the base end thereof. On the other hand, the wiring box B ₆ is provided with a pair of female screws 26 penetrating the bottom wall 1 of the box body M ₆ . The position where the pair of female screws 26 are formed is on the line segment connecting the pair of boss bodies 4, and the pair of boss bodies 4 are exposed by the superposition of two circles centered on the position, and the box body M It is a position where only the front surface of ₆ can face the wall surface. Therefore, the detected object E _{2 is} attached to each female screw 26 formed on the bottom wall 1 of the box body M _6.
When the male screw 25 of No. ₂ is screwed, the magnet 6 forming the detected device E ₂ faces the opening of the box body M ₆ . Then, similarly to the above, when the position of each detected tool E ₂ is magnetically detected from the wall surface and two circular perforations are performed around each detected position, the above two conditions 1 and 2 are satisfied . A filling synthetic through hole is drilled. In the present embodiment, the female screw 26 formed on the bottom wall 1 of the box body M ₆ serves as a mounted portion of the detected device E ₂ .

Subsequently, the wiring box B _{7 of the} present invention is provided.
Will be described. FIG. 16 is a perspective view of the wiring box B ₇ , and FIG. 17 is a box body M of the wall body W.
FIG. 18 is a vertical cross-sectional view of the wiring box B _{7 in} a state where the position of the magnet 6 of ₇ is being detected, and FIG. 18 is a wiring box B ₇ showing a state in which one through hole H is formed in the wall body W. 19 is a front view of FIG. 19 and is a perspective view showing a state in which the remaining one hole center C ₂ is marked out using the gauge tool G ₁ . As shown in FIGS. 16 to 18, the box B ₇ has a configuration in which the upper magnet 6 is omitted from the box B _{3 and} only the lower magnet 6 is provided. The center position of the magnet 6 is below the midpoint of the line segment connecting the pair of upper and lower boss bodies 4, and the center of the hole of the magnet 6, C ₁ , is exposed by the first circular hole. A pair of boss bodies 4 for attaching wiring devices are formed by superposition of two through holes H which are circularly punched around the upper piercing center C ₂ which is scored on the basis of the lower boss body 4. It is a position where it is exposed and only the front surface of the box body M ₇ can be exposed to the wall surface.

Then, the perforation hole satisfying the above-mentioned two conditions is perforated in the wall body W standing upright on the front surface of the wiring box B ₇ only by the perforation tool D as follows. First, as shown in FIG. 17, the position of the magnet 6 is detected using the magnetic detector A, and the position is marked on the wall surface of the wall W. The gauge tool G ₁ is used to position _{one of} the C ₁ and C ₂ (C ₁ ), and the position of the other drilling center C ₂ . Since the lower boss body 4 is exposed to the wall surface by the first circular perforation, the distance (L ₁ ) between the center of the boss body 4 and the center C ₂ of the perforation to be obtained is known in advance. With the boss 4 as a reference, the position of the center C ₂ of the perforation can be obtained. The gauge tool G ₁ is
Two holes 32, 33 are formed in the plate body 31 with the space (L ₁ ) therebetween.
Is provided.

Then, as shown in FIG. 19, the gauge tool G _{1 is applied} to the front surface of the wall W so as to cover the first through hole H, and the positioning hole 3 below the gauge tool G ₁ is applied.
And 2, by inserting the positioning pins 34 into the hole portion 4a of the lower boss member 4 of the box B _7, in a state of performing the positioning of the gauge tool G ₁ with respect to the box B _7, of the gauge tool G ₁ When the scoring tool 35 is inserted into the upper scoring hole 33 and the position of the scoring hole 33 is scribed on the wall surface, this position becomes the upper piercing center C ₂ . When the second (rear) circular perforation is performed by the perforating tool D with the perforation center C ₂ above as the center, two circular through holes H are combined in the vertical direction to form a pair of upper and lower perforations. The boss 4 is exposed on the wall surface, and only the entire surface of the box body M ₇ is perforated with a synthetic through hole that is exposed to the maximum.

Next, the wiring box B ₈ of the present invention will be described. FIG. 20 is a front view of the wiring box B ₈ in which one through hole H is formed in the front wall W.
FIG. 21 is a perspective view of the wiring box B ₈ showing a state in which the remaining three drilling centers C _{2 to} C ₄ are marked out using the gauge tool G ₂ . This box B ₈ is provided with only one magnet 6 at the lower left in the front view of the box B ₄ and has the other three magnets 6 omitted. The center position of the magnet 6 is the center position of the perforation C ₁ which is the center position of the magnet 6 and the remaining three center of perforation C which are marked out with reference to the lower left boss body 4 exposed by the first circular perforation. _{Due to} the superposition of the four through-holes H which are circularly perforated with _{2 to} C ₄ respectively, all of the two sets of boss bodies 4 which are a pair of upper and lower parts for attaching the wiring device are exposed, and It is a position where only the front surface of the box body M ₈ can be exposed to the wall surface.

The gauge tool G ₂ is used for marking out the remaining three drilling centers C _{2 to} C _{4 based} on the lower left boss body 4 exposed by the first circular drilling.
In the plate 36, one positioning hole 37 and three scoring holes 38 are formed. In this gauge tool G ₂ , the distance (L ₂ ) between the positioning hole 37 and the scoring hole 38 immediately above it is between the center of the lower left boss body 4 of the box B ₈ and the center C ₂ of the hole to be obtained. And the distance (L ₃ ) to the left and right of the scoring hole 38 is equal to the distance between the center of each hole C ₁ to C.
₄ is equal to the left-right spacing, and the vertical spacing (L ₄ ) of the scoring hole 38 is equal to the vertical spacing of each punch center C ₁ -C ₄ .

In order to punch a through hole satisfying the above two conditions 1 and 2 in the wall W standing upright on the front surface of the wiring box B ₈ only by the punching tool D, the box B ₇ The procedure is almost the same as the above. First, the position of the magnet 6 is detected from the wall surface, and the position is set as the drilling center C ₁ ,
The first through hole H is punched by the punching tool D. This initial circular perforations, the lower left of the boss member 4 is exposed, the boss member 4 as the reference position, using the gauge tool G _2, the remaining three perforated center C ₂ -C ₄ the wall table Write out the lines. That is, as shown in FIG. 21, the gauge tool G ₂ is attached to the wall surface.
Therefore it relies on, and the positioning hole 37, and inserting the boss body 4 of the hole 4a and the positioning pins 34 of the box B _8, keep performing the positioning of the gauge tool G ₂ for box B _8, When the scoring tool 35 is inserted into the three scoring holes 38 provided in the gauge tool G ₂ and the corresponding positions are marked on the wall surface, these positions are respectively the center of the perforation C ₂
The ~C _4. Then, when the subsequent circular perforation is performed on the wall W around the perforation centers C _{2 to} C ₄ , the first circular perforation and
A total of four through-holes H, which are the latter three circular perforations, are combined along both the vertical and horizontal directions, and the combined through-holes satisfying the above-mentioned two conditions are perforated.

[0025] In the second to eighth respective wiring box B ₂ .about.B ₈ described above, the boss member (mounting portion) for attaching the wiring device 4 is exposed, moreover box body M ₂ ~M ₈
Has a plurality of through holes H for satisfying the two conditions 1 and 2 that the front surface of the wall surface faces the wall surface. In each of the wiring boxes B _{2 to} B ₈ , a plurality of through holes H are formed. The number of perforations is the smallest in all, and the sizes (inner diameter) of the plurality of through holes are all the same.

Next, with reference to FIGS. 22 to 25, a wiring box B ₉ will be described in which only one detected device E ₃ having a separate structure can be removably mounted. The detected device E ₃ corresponds to the embodiment of the invention of claim 5 .
In the detected tool E ₃ , the magnet 6 is embedded in the tip of a magnet-embedded body 41 having a cylindrical shape, and a pair of fitting projections 42 are provided in a projecting manner on opposite portions of the outer peripheral surface of the base end thereof. It is a composition. The outer peripheral surfaces of the pair of fitting projections 42 are circumferential surfaces having the same radius, and their heights are substantially the same along the circumferential direction. On the other hand, the bottom wall 1 of the box body M ₉
In a portion of the box B ₇ corresponding to the protruding position of the magnet embedded body 2, a pair of fitted bodies 43 for detachably mounting the detected tool E ₃ are provided so as to face each other. There is. A fitting groove 43a for fitting the pair of fitting protrusions 42 is provided on the inner peripheral side of the pair of fitted bodies 43. One end of the fitting groove 43a along the circumferential direction is opened and the other end is closed, and the closed portion serves as a stopper portion 43b. Also,
An insertion guide for guiding the insertion of the base end portion of the magnet-embedded body 41 between the pair of fitted bodies 43 at a portion slightly different in phase from the pair of fitted bodies 43. The pin 44 is projected. Width of the fitting groove 43a (meaning the distance along the depth direction of the box B ₉ )
Is gradually narrowed from the inlet side, which is the opening side, toward the inner side (the side of the stopper portion 43b) so that the fitting protrusion 42 can be fitted without a gap.

Then, as shown in FIGS. 22 and 23, a pair of fitting projections 42 provided at the base end portion of the detected tool E ₃ are connected to the fitted body 43 and the insertion guide pin 44 adjacent to each other. The base end portion is located between the pair of mating members 43.
After being inserted into a portion surrounded by the pair of insertion guide pins 44, the fitting protrusion 42 causes the stopper portion 4 of the fitted body 43 to be inserted.
When the detected tool E ₃ is rotated clockwise by a predetermined angle until it abuts against the 3b, the fitting protrusions 42 are fitted into the fitting grooves 43a of the fitted bodies 43, respectively. in this way,
With the detected device E ₃ attached to the bottom wall 1 of the box body M _{9 in} a removable manner, the position of the detected device E ₃ is detected from the wall surface in the same manner as above, and the detected position is determined. After performing circular perforation as the center of perforation, the detected tool E ₃ is rotated in the opposite direction to the above, removed from the box body M ₉ , and the detected tool E ₃ is reused.

Further, the wiring box of the present invention shown in FIG.
The box B ₁₀ has substantially the same shape as the box B ₂ having two magnets 6 for detecting the two drilling centers C ₁ and C _2, and has a separate structure in the box body M ₁₀ . This is an example in which only one of the to-be-detected devices E ₃ is removably mounted, and the same parts as those described above are designated by the same reference numerals and only shown in the drawings, and a detailed description thereof will be omitted.

Further, in each wiring box B _{1 to} B ₆ ,
The number of circular perforations on the wall and the number of detected parts arranged in the box body are both equal, but in the box body, a plurality of detected parts are provided, Moreover, a wiring box having a smaller number of detected portions than the number of circular perforations in the wall body is also included in the technical scope of the present invention. For example, in the wiring box B ₄ shown in FIG. 11, it is a case where only one magnet is arranged in one diagonal direction and two magnets 6 are arranged, and no magnet is arranged in the other diagonal direction. In this case,
Two through-holes are formed by circular perforation along the diagonal direction of the box body, and each boss body 4 is provided in the box body partially opened on the wall surface through the two through-holes.
Using the above-mentioned gauge tool or the like as a reference, the remaining two perforation centers may be marked out and the remaining two circular perforations may be performed.

Further, the above wiring boxes B ₇ and B _{8 are provided.}
In the method of boring a plurality of through holes in (1), after detecting the position of one magnet 6 (detected portion) from the wall surface, the wall body W is first circularly perforated with the detected position as the center, and the boss is formed. The body 4 is exposed on the wall surface, and then, based on the position of the boss body 4, another hole center is extracted (derived) by a hole center extracting means such as a gauge tool, and finally the other hole center. The second circular perforation is performed around the center of the box, and the box opening is exposed to the wall surface by the superposition of the first circular perforation and the subsequent circular perforation. However, the order of the work of deriving the other drilling centers in the boxes B ₇ and B ₈ described above and the drilling work is not limited to the above. That is, one magnet 6 from the wall surface
After detecting the position of the (detected portion), the gauge tool may be used to derive the remaining center of perforation, and thereafter, all circular perforations may be continuously performed.

According to the method of perforating a hole in a wall body according to the present invention, the position of the detected portion disposed inside the box body is detected from the wall surface, and the wall body is centered around the detected position. Multiple
By making a number of circular perforations , the front of the box body is exposed to the wall surface.At this time, the size of the circular through hole perforated in the wall body is such that the mounting portion for mounting the wiring device is exposed,
Moreover, it is desirable that only the front of the box body faces the wall surface, but even if the outer part of the box body is exposed a little,
As long as it can be covered with a decorative cover, it will not hinder the installation of the wiring equipment later. Therefore, as for the size of the circular through hole formed in the wall body, even if the outer portion of the box body is exposed to some extent, the technical concept of the through hole drilling method for the wall body according to the present invention It is included in the range.

[0032]

As described above, according to the present invention, the position of only one detected portion provided in the box body and the shape of the box body itself are devised so that the maximum radius with respect to the shape of the peripheral wall of the box body is increased. By only using multiple circular perforations, the mounting part for mounting the wiring equipment is exposed, and the through hole that allows the front of the box body to face the wall surface can be perforated in the wall body, so use a saw or the like as in the past. Compared with the case of forming a through hole, the scoring line corresponding to the opening of the box body is not required to be provided on the wall surface of the wall body, and the number of times of punching the wall body is minimized, and this hole drilling work is performed. Is significantly easier.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a wiring box B ₁ is attached to a column S.

FIG. 2 is a front view showing a state where one through hole H is bored in the wall body W and the inside of the box body M ₁ faces the wall surface.

FIG. 3 is a vertical cross-sectional view showing a state in which the position of a magnet 6 of a box body M _{1 on} a wall W is magnetically detected.

FIG. 4 is a vertical cross-sectional view showing a state in which a through hole H is drilled in a wall body W using a punch tool D.

5 is a perspective view of a punching tool D. FIG.

FIG. 6 is a perspective view showing a state in which a wiring box B ₂ is attached to a column S.

FIG. 7 is a front view of the wiring box B ₂ in which a first through hole H is formed in the wall W.

FIG. 8 is a wiring box B _{2 in} which two through holes H are punched in the wall W so that the inside of the box body M ₂ faces the wall surface.
FIG.

FIG. 9 is a vertical cross-sectional view showing a state in which a second through hole H is bored in the wall W using the punching tool D.

FIG. 10 is a front view showing a state in which two through holes H are punched in the wall body W and the inside of the box body M ₃ faces the wall surface.

FIG. 11 is a front view showing a state in which four through holes H are bored in the wall body W and the inside of the box body M ₄ faces the wall surface.

FIG. 12 is a perspective view of a wiring box B ₅ and a detected device E ₁ .

FIG. 13 is a wiring box B to which the detected device E ₁ is attached.
₅ is a cross-sectional view showing a state in which a through hole H is bored in the front wall W of FIG.

FIG. 14 is a plan view showing a state in which two through holes H are formed in a wall body W on the front surface of a similar wiring box B ₅ .

FIG. 15 is a perspective view of a wiring box B ₆ and a detected device E ₂ .

FIG. 16 is a perspective view of a wiring box B ₇ .

FIG. 17 is a vertical cross-sectional view showing a state in which the position of the box body M _{7 on} the wall W is being detected.

FIG. 18 is a front view of the wiring box B ₇ showing a state where one through hole H is formed in the wall body W.

FIG. 19 is a perspective view showing a state in which the remaining one hole center C ₂ is marked out by using the gauge tool G ₁ .

20 is a front view of the wiring box B ₈ showing a state where one through hole H is formed in the wall body W. FIG.

FIG. 21 is a perspective view showing a state in which the remaining three drilling centers C _{2 to} C ₄ are marked out using a gauge tool G ₂ .

FIG. 22 is an exploded perspective view of a wiring box B ₉ and a detected device E ₃ .

FIG. 23 is a cross-sectional view showing a state immediately before the pair of fitting protrusions 42 of the detected device E ₃ are fitted to the pair of fitted bodies 43 of the box body M ₉ .

FIG. 24 is a cross-sectional view showing a state in which the pair of fitting protrusions 42 of the detected device E ₃ are fitted to the pair of fitted objects 43 of the box body M ₉ .

FIG. 25 is a sectional view of the wiring box B ₉ in the same state.

FIG. 26 is an exploded perspective view of a wiring box B ₁₀ and a detected device E ₃ .

FIG. 27 is a front view showing a state in which a through hole H ′ having a size protruding from the box body 51 is bored in the front wall of the box body 51.

FIG. 28 is a front view showing a state in which a through hole H ″ having a size such that a pair of bosses 53 is hidden behind the wall is bored in the front wall of the box body 51.

[Explanation of symbols]

A: Magnetic detectors B _{1 to} B ₁₀ : Wiring boxes C _{1 to} C ₄ : Drilling center D: Drilling tools E _{1 to} E ₃ : Detecting tool (detecting member) H: Through holes M _{1 to} M ₁₀ : Box body W: Wall body 1: Bottom wall of box body 3: Opening of box body 4: Boss body (reference portion) 6: Magnet (detected portion) 23: Magnet (detected portion) 24: Attached portion 26: Female screw (attached portion) 43: Fitted body (attached portion)

Claims (5)

(57) [Claims] 1. A wiring box installed on the back of a wall, which has only one detected part that can be detected from the wall surface and can be removed, and the detected part has a partly superposed structure. With a plurality of circular perforations , the mounting portion for mounting the wiring device is exposed, and it is possible to perforate a through hole that allows only the front surface of the box body to face the wall surface.
Hole center of a specific one of the plurality of circular holes
The position of the center of the box body
The wiring box is characterized in that it is arranged inside the box body toward its own opening. 2. The box body is formed in a rectangular shape, and the detected portion has two circular holes for exposing a mounting portion for mounting a wiring device, and a through hole capable of exposing only the front surface of the box body to the wall surface. In order to enable perforation of the circular perforation, one of the two circular perforations is disposed inside the box main body toward the opening of the circular perforation center of the circular perforation. Wiring box described in. 3. The box body has only one peripheral wall shape.
Multiple circles including the circle centered on the detected part of
The wiring box according to claim 1, wherein the wiring box has substantially the same shape . 4. The wiring box according to claim 1, wherein the detected portion is provided so as to project from the bottom wall of the box main body toward the opening thereof. 5. A member to be detected, which is detachably attached to a box body of a wiring box and has only one detected portion which can be detected from a wall surface,
The plurality of circular perforations partially overlap each other so that the mounting portion for mounting the wiring device is exposed and the through holes that allow only the front surface of the box body to face the wall surface can be perforated.
Is the center of the perforation of a specific one of the holes,
Also, the detected part is located at a position displaced from the center of the box body.
A detected member attached to a wiring box, characterized in that it can be attached to the box body so as to be arranged .