JP2008093785A - Method for forming through hole on double-wall, method for arranging ventilation pipe, and center position indicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To heighten arranging accuracy of respective center positions of circular bored holes relative to wall plates when through holes are formed on a double-wall. <P>SOLUTION: A first through hole H11, to which an opening 21 of a ventilation pipe holding tool (arranging element) S arranged in a space 4 is faced, is formed from outside of one wall plate 2 by a first circular drill hole using a hole saw (drill tool). A center position C22 of a second circular drill hole specified by a center position indicator E1 for indicating the center position C22 of the second through hole H12 to be formed on the other wall plate 3 passes through the first through hole H12 and the ventilation pipe holding tool S. A center position displaying through hole is formed on the other wall plate 3 by a long drill from the outside of one wall plate 2, and a center shaft of the hole saw is made to contact a through hole 51 from the outside of the other wall plate 3, so as to form a second through hole H12 having a specific positional relationship to the first through hole H11 on the other wall plate 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method of forming a through hole in a double wall in which each wall plate is erected oppositely through a space by two round drillings, and a ventilation pipe by forming a through hole in the double wall. And a center position indicator used when forming a through hole in a double wall.

  A double wall (hollow wall) is a structure in which each wall plate is erected opposite to each other through a space portion, and in order to form a through hole by drilling each wall plate of the double wall, There are a method of performing circular drilling twice with a hole saw having a blade length of 1 mm and a method of performing circular drilling once with a hole saw having a long blade length.

  In the former method, in order to drill each wall plate individually, the center position of the through hole with respect to the wall plate to be drilled later is aligned with the center position of the through hole of another wall plate already drilled ( It is necessary to specify not only when both center positions are arranged on the same horizontal line but also when both center positions are shifted vertically or horizontally by a set length). As described above, the operation of determining and displaying the center position of the subsequent circular drilling on the basis of the center position of the previous circular drilling is very troublesome, takes time, and lowers the work efficiency.

  In the latter method, a hole saw with a long blade length is used, which is inconvenient to handle. At the time of subsequent circular drilling, the blade body is easily shaken by the longer blade length. It is a dangerous work that can be broken. In particular, when the center positions of the front and rear circular drilling are shifted to the left or right or up and down, the shift amount depends only on the drilling technology possessed by the operator. (The placement accuracy of the center position of the subsequent circular drilling with respect to the center position of the first circular drilling) is lowered. In addition, in the applicant's investigation, there was no prior art document relating to “a method of forming a through hole in a double wall in which each wall plate is erected oppositely through a space”.

  According to the present invention, when the through holes are formed in the double wall in which each wall plate is erected opposite to each other through the space portion, the arrangement accuracy between the center positions of the first and second circular perforations with respect to each wall plate The objective is to improve the efficiency of drilling and to enable efficient drilling.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that each wall plate is erected so as to face each other through a space portion, and a double wall is formed. A method of forming a through hole in the double wall to be disposed so as to penetrate a piping material, a center shaft, and a drilling blade capable of forming a circular hole by rotating around the center shaft The first through hole is formed by first circular drilling through the one wall plate from the outside of the one wall plate, and the other wall plate is formed with respect to the first through hole. A center position indicator that displays the center position of the second through-hole to be formed is arranged on the wall plate from the outside of the one wall plate, thereby specifying the center position of the second circular drilling with respect to the other wall plate. The center position of the second circular drilling specified by the center position indicator is the first transparent Center position display that displays the center position of the second circular drilling by forming a through-hole toward the other wall plate with a drill having a length that can penetrate the double wall from the outside of the one wall plate A second circle centering on the center position display hole is formed by forming a hole and applying the center axis of the punch to the center position display hole formed in the other wall plate from the inside of the other wall plate. A second through hole having a specific positional relationship with respect to the first through hole is formed in the other wall plate by drilling.

  According to the first aspect of the present invention, the center position of the second circular perforation with respect to the other wall plate is specified on the basis of the first through hole formed in the one wall plate by the first circular perforation. The center positions of the first and second through holes drilled in each wall plate constituting the heavy wall are arranged with a specific relationship. Here, the “specific relationship” means that the line connecting the center positions of the through holes is horizontal and passes through the center position of each through hole (a line passing through the center position and perpendicular to the wall plate). Or the center position of the second through hole is displaced by a set amount in the vertical direction, the left or right direction, or the direction in which these are combined with respect to the axis passing through the center position of the first through hole. Say. Therefore, using an existing hole saw having a normal blade length, the center positions of the first and second through holes drilled in the wall plates constituting the double wall have a “specific relationship”. Thus, a through hole can be easily formed in the double wall.

  According to a second aspect of the present invention, each wall plate is erected so as to face each other through a space portion to form a double wall, and an arrangement body is provided in the space portion, and both sides of the double wall are provided. A through-hole is formed in the double wall so that a fluid flow passage and wiring / piping material can be penetrated through the arrangement body. By first circular drilling using a drilling tool provided with a drilling blade capable of forming a circular drilling by rotating around the circumference, the one wall plate is penetrated from the outside of the one wall plate, and the space portion is formed. An opening of the disposed body forms a first through hole that faces the outside of the one wall plate, and is disposed within the opening of the disposed body that faces the first through hole. A center position indicator that displays the center position of the second through-hole to be formed, or the center position of the second through-hole formed in the arrangement body The center position of the second circular perforation specified by the center position display part is passed through the first through hole and the arrangement body, and the other wall is drilled with a length that can penetrate the double wall from the outside of the one wall plate. By forming a through-hole toward the inside of the plate, a center position display hole for displaying the center position of the second circular drilling is formed, and the center axis of the drilling tool is displayed from the outside of the other wall plate. A second through hole having a specific positional relationship with respect to the first through hole is formed in the other wall plate by second circular drilling centered on the center position indicating hole. .

  The invention of claim 2 differs from the invention of claim 1 in that the specific reference for the center position of the second circular drilling with respect to the other wall plate is different. That is, in the first aspect of the invention, the first through hole formed in one wall plate by the first circular perforation is a reference, whereas in the second aspect of the invention, the first circular perforation is performed on one wall. The difference is that the arrangement with the opening facing the wall surface of the plate is a reference, and the center positions of the first and second through holes drilled in each wall plate constituting the double wall have a specific relationship The points arranged in common are the same. Further, in a state in which the arrangement body is arranged in advance in the space portion constituting the double wall, each of the first and second transparent plates having a specific center position on each wall plate constituting the double wall. There is an advantage that a hole can be drilled to form a through hole in the double wall.

  According to a third aspect of the present invention, in the second aspect of the present invention, the arrangement body may be arranged from the outside of one wall plate so as to specify the center position of the first through hole for allowing the opening to face the wall surface. A detectable portion that can be detected, detecting the detected portion from the outside of the one wall plate, and identifying the center position of the first circular perforation by the detection to form a first through hole; It is characterized by that.

  According to the invention of claim 3, the arrangement body arranged in the space portion of the double wall can be detected from the outside of one wall plate constituting the double wall, and the arrangement body Since the to-be-detected portion that displays the center position of the first through hole facing the wall surface is provided, the first through hole is formed while the arrangement body is concealed in the double wall. The center position of the first circular perforation can be accurately detected from the outside of the one wall plate.

  The invention of claim 4 is the invention according to any one of claims 1 to 3, wherein the specified center position of the second circular perforation passes through the center of the first circular perforation and is perpendicular to the wall plate. It is characterized in that the position is shifted vertically upward or vertically downward with respect to a simple axis.

  According to the invention of claim 4, the specified center position of the second circular drilling is not limited to the case where it exists on the axis of the first circular drilling, and is shifted vertically upward or vertically downward with respect to the axis. Even when the line segment connecting the center positions of the first and second circular perforations is inclined, the center position of the second circular perforation can be accurately specified.

  Further, in the invention of claim 5, each wall plate is erected oppositely through the space portion to form a double wall, a ventilation pipe holder is disposed in the space portion, and the double wall is A method of forming a through-hole passing through the opening of the ventilation pipe holder and disposing the ventilation pipe in the through-hole, from the outside of one wall plate to the one wall plate by first circular drilling, A first through hole is formed so that the opening of the ventilation pipe holder disposed in the space part faces the wall surface, and the ventilation pipe holder whose opening faces the wall surface by the first through hole, A center position indicator having a display part for displaying the center position of the second through hole to be formed on the wall plate is attached, and the center position of the second circular perforation displayed by the display part of the center position indicator Through the double wall inserted through the first through hole from the outside of the one wall plate A second through-hole is formed in the other wall plate by a second circular drilling centered on the through-hole, and the first and By inserting a ventilation pipe from the outside of the double wall into the through hole formed in the double wall by each second circular drilling and holding it in the wall with a ventilation pipe holder, On the other hand, a ventilation pipe is provided.

  The invention according to claim 5 is the ventilation pipe holder according to claim 2, wherein the arrangement body disposed in the space portion of the double wall is a ventilation pipe holder for holding one end of the ventilation pipe, A through-hole passing through the opening of the ventilation pipe holder is formed, and the ventilation pipe is disposed in the through-hole. A double wall is formed by the first and second circular perforations. The method itself for forming the first and second through holes having a specific positional relationship in each wall plate is the same as that of the invention of claim 2.

  According to a sixth aspect of the present invention, each wall plate is erected so as to face each other through the space portion to form a double wall, and an arrangement body is disposed in the space portion, and the double wall When the through-hole is formed in the double wall so as to pass through the fluid flow passage and the wiring / piping material on both sides of the wall, the center position of the through-hole with respect to one of the wall plates A display part for displaying a mounting part that can be attached to the arrangement body arranged in the wall from the wall surface through the first through hole formed in one wall plate by the first circular perforation. And a display unit for displaying the center position of the second through hole scheduled to be formed on the other wall plate by the second circular perforation, and the display unit is inserted into the wall through the first through hole. The drill is configured by a guide portion for guiding the drill to the center position of the second through hole scheduled to be formed on the other wall plate.

  According to invention of Claim 6, after forming a 1st through-hole in one wall board which comprises a double wall by 1st circular perforation, the arrangement | positioning body by which the opening faced outside the wall by the said 1st through-hole A center position indicator is attached to the center of the drill through the first through hole, and the drill inserted into the wall is guided by the guide portion of the center position indicator. When a through hole is drilled in the wall plate, the through hole displays the center position of the second circular drilling.

  The invention of claim 7 is characterized in that, in the invention of claim 6, the guide portion is formed in a cylindrical shape so that a drill can pass therethrough.

  According to the invention of claim 7, the guide portion of the drill which is formed in the center position indicator and drills the through hole which becomes the center position of the second circular drilling on the other wall plate can penetrate the drill. Since it is formed in a cylindrical shape, when drilling the through-hole with a drill, the swing of the drill is reduced, and the accuracy of the formation position of the center position of the second circular drilling is increased.

  The invention according to claim 8 is the invention according to claim 6 or 7, wherein the first attachment hole is perpendicular to the axis of the center position of the first through hole formed in one wall plate in the state of being attached to the arrangement body. In order to display the center position of the second through hole to be formed on the other wall plate at a position shifted upward or vertically downward, the guide part is inclined with respect to the attachment part, or the guide part is a horizontal line. It is characterized in that an attachment portion can be attached to the arrangement body so as to be inclined relative to the arrangement body.

  According to the invention of claim 8, when the center position indicator is attached to the arrangement body arranged in the space portion of the double wall via the attachment portion, the guide portion is directed obliquely upward or obliquely downward. The center position of the second through hole formed in the other wall plate as a through hole by the drill that is inclined and penetrated through the guide portion is the center position of the first through hole formed in the one wall plate. Is displayed at a position shifted vertically upward or vertically downward with respect to the axis line.

  According to the method for forming a through-hole in a double wall according to the present invention, when the through-hole is formed in the double wall in which each wall plate is erected opposite to each other through the space portion, the first circular perforated hole is formed. The center position of the second circular drilling is specified and the second circular drilling is performed on the basis of the center position of the second circular drilling or the position of the arrangement body in the wall facing the wall surface by the first circular drilling. The through holes can be efficiently formed while improving the accuracy of the mutual arrangement of the center positions of the circular perforations with respect to the respective wall plates constituting the heavy wall.

  In addition, according to the center position indicator according to the present invention, after the first through hole is formed in one wall plate constituting the double wall by the first circular perforation, the opening is made outside the wall by the first through hole. The center position indicator is attached to the arranged body through the attachment portion, and the drill inserted into the wall through the first through hole is guided by the guide portion of the center position indicator. When the through-hole is drilled in the other wall plate by the drill, the through-hole displays the center position of the second circular drilling, and the first and second walls formed in each of the wall plates constituting the double wall The center position of each of the second through holes has a specific relationship, and can be accurately drilled.

  Hereinafter, the present invention will be described in more detail with reference to a plurality of best embodiments.

  First, a method for arranging the ventilation pipe P with respect to the ventilation pipe holder S arranged inside the double wall W will be described. As shown in FIGS. 4 and 10, the double wall W has the respective wall plates 2 and 3 arranged on both sides of the pillar 1, and the respective wall plates 2 and 3 are opposed to each other through the space portion 4. A ventilation pipe holder S is fixed to a side wall of the column 1 (a surface perpendicular to the wall surface of the double wall W).

Next, with reference to FIG.1 and FIG.3, the ventilation pipe holder S fixed to the said pillar 1 is demonstrated. FIG. 1 is a perspective view of a state in which a ventilation pipe holder S is fixed to a column 1 standing in a double wall W, and FIG. 2 is a central longitudinal sectional view of the ventilation pipe holder S. The ventilation pipe holder S is a member that partially inserts and holds the end portion of the ventilation pipe P that is inserted from the second through hole H ₁₂ on the outdoor side that forms the through hole H ₁ formed in the double wall W. In addition, the overall shape is rectangular, and the vertical plate 12 and the horizontal plate 13 in the form of a flange plate are integrally provided on the vertical and horizontal sides of the main body 11 toward the back side. It is a configuration. The ventilation pipe holder S has a symmetrical shape with respect to the vertical center line C ₁ , but has a vertically asymmetric shape with respect to the horizontal center line C ₂ . Concave portions 12a and 13a are formed in the longitudinal center portions of the vertical side plate portion 12 and the horizontal side plate portion 13 respectively, and vertical and horizontal crosspiece portions 14 and 15 are formed in the concave portions 12a of the vertical side plate portions 12, respectively. Further, the small piercing bodies 14a and 15a which protrude slightly from the plate surface of the vertical plate portion 12 and are pierced by an object to be fixed such as the column 1 are formed on the side surfaces of the specific crosspieces 14 and 15. Are integrally formed. In the concave portion 13a of the lateral side plate portion 13 disposed below, a rod-like detection tool 17 having a magnet 16 held at the central portion in the longitudinal direction is disposed so as to be broken.

In addition, a pipe connection cylinder 18 is integrally formed on the back surface of the main body 11, and a rear end portion of the pipe connection cylinder 18 that is vertically opposed to the pipe connection cylinder 18 has a tip portion. Each of the pasting margin pieces 19 for pasting the ventilation pipe P in which is inserted through a tape is formed so as to protrude rearward in the vertical direction (see FIG. 2). In the ventilation pipe arranging method according to the present invention, the pasting piece 19 is not used. An opening 21 connected to the pipe connection cylinder 18 is formed on the front surface of the main body 11, and a front plate 61 of the ventilation fan V (both shown in the figure) is formed on the front surface of the main body 11 excluding the opening 21. Innumerable screw threaded lower holes 20 for screwing are formed in a group over the entire surface. Respective parts for fitting both ends of the detected device 17 and the center position display device E ₁ into the portion facing the opening 21 on the front surface of the main body 11 and intersecting the longitudinal center line C ₁ . The fitting grooves 22 are formed so as to face each other in the form of opening on the front surface and the opening 21 side. The depth of the pair of upper and lower fitting grooves 22 is the same. A portion facing the front of the opening 21 of the main body portion 11, moreover the portion intersecting the transverse center line C _2, each of the center display groove 23 for displaying the vertical center (center) is formed to face ing. Above the center display grooves 23 in the front surface of the main body 11, when fixing the ventilation pipe holder S in column 1 via the screws B _1, insert a screwdriver (not shown) for rotating the screw B ₁ A screw insertion hole 24 is formed, and a screw insertion hole 25 continuous with the driver insertion hole 24 is formed in the vertical plate portion 12 (see FIG. 1).

Further, the ventilation pipe P that is piped on the outdoor side of the building needs to be inclined and piped so that the outdoor side is slightly lowered so that water droplets generated inside can be easily discharged to the outside. The axis C ₁₂ of the pipe connection cylinder 18 formed on the back side is inclined by an angle (θ) with respect to the axis C ₁₁ of the opening 21 formed in the main body 11. Further, the insertion end of the ventilation pipe P inserted into the pipe connection cylinder 18 is brought into contact with the end portion on the near side of the pipe connection cylinder 18 and the lowest portion along the circumferential direction. For this purpose, an insertion restricting piece 26 is provided so as to be broken off. In FIGS. 1 and 2, reference numeral 27 denotes a cord insertion hole for inserting the cord of the ventilation fan V.

Next, a method for forming the through hole H ₁ in the double wall W and disposing the ventilation pipe P in the through hole H ₁ will be described with reference to FIGS. (A) to (F) in FIGS. 3A and 3B are longitudinal sectional views of the double wall W for explaining the construction sequence, and FIG. 4 is arranged in the space portion 4 of the double wall W. FIG. 5 is a perspective view showing a state in which the position of the axis C ₁₁ of the opening 21 of the ventilation pipe holder S is detected by the magnetic detector A, and FIG. ₁₁ is a perspective view of a state in which the center position indicator E ₁ is set on the ventilation pipe holder S through ₁₁ , and FIG. 6 uses the center position indicator E ₁ and long drill 71 set on the ventilation pipe holder S. FIG. 7 is a perspective view showing a state where the center position of the second circular perforation with respect to the wall plate 3 is displayed. FIG. 7 shows the ventilation pipe holder S arranged in the space 4 of the double wall W. It is a perspective view which shows the state which attaches the ventilation fan V. FIG.

First, as shown in FIG. 1, the rod-like detection tool 17 attached to the ventilation pipe holder S so as to be broken off is broken, and both ends of the detection tool 17 are placed on the peripheral edge of the opening 21. When fitted in the respective upper and lower fitting grooves 22 arranged opposite to each other, the magnet 16 arranged at the center in the longitudinal direction of the detection tool 17 is arranged at the axis C ₁₁ of the opening 21. Before the wall plates 2 and 3 are erected on both sides of the column 1 in order to form the double wall W, the ventilation pipe holder S is attached to the side surface 1a where the wall plates 2 and 3 of the column 1 are not in close contact. By sticking one vertical side plate portion 12 in a pressed state, the small piercing bodies 14a and 15a of the vertical and horizontal crosspieces 14 and 15 formed in the concave portion 12a of the vertical side plate portion 12 are pierced into the side surface 1a. At the same time, the screw B ₁ disposed in an inclined posture in the screw insertion hole 25 through the driver insertion hole 24 of the ventilation pipe holder S is rotated by a screwdriver (not shown) and screwed into the pillar 1. Thereby, the ventilation pipe holder S is fixed to the side surface 1a of the column 1 in a vertical and cantilevered manner. In the ventilation pipe holder S, the surface of the main body 11 on which the screw threaded lower hole 20 is formed at the position slightly retracted with respect to the side surface 1b with which the wall plate 2 of the column 1 is abutted is used as the ventilation fan V. It is arranged facing the mounting side.

  Next, when the wall plates 2 and 3 are respectively erected on both sides of the column 1 and the wall plates 2 and 3 are fixed to the column 1 or the like, the wall plates 2 and 3 are opposed to each other through the space portion 4. A double wall W is formed, and a ventilation pipe holder S is disposed in the space 4 of the double wall W. As a result, the ventilation pipe holder S is hidden in the double wall W.

Next, as shown in FIGS. 3A and 4, the opening of the ventilation pipe holder S concealed in the double wall W using the magnetic detector A capable of detecting magnetism. The magnet 16 which is the position of the axis C ₁₁ of 21 is detected, and the detection position (see FIG. 3A (A)) is marked on the wall plate 2. The detection position displays the center position C ₂₁ of the first circular drilling with respect to the wall plate 2. In addition, although the to-be-detected tool 17 of the said Example breaks and uses what was previously equipped with the ventilation pipe holder S, the rod-shaped to-be-detected tool 17 is the ventilation pipe holder S. The opening 21 of the ventilation pipe holder S is integrally disposed along the diametrical direction, and can be broken up and disposed of after use, or a separate dedicated detection tool can be disposed along the diametrical direction of the opening 21 of the ventilation pipe holder S. The structure to mount may be sufficient. Further, when a detected portion is provided in a portion other than the axis C ₁₁ of the opening 20 of the ventilation pipe holder S, the detected portion is detected from the outside of the wall plate 2 and the detected point is walled. scribed in the plate 2, then to the scoring position with the reference, it is also possible to scribed a first circular perforations of the center position C ₂₁ to the wall plate 2.

Next, as shown in FIG. 3A (B), the first circular drilling using the hole saw F for drilling a circular hole in the plate material causes the wall plate 2 to be more than the opening 21 of the ventilation pipe holder S. drilling a first hole H ₁₁ of larger inner diameter. The hole saw F includes a center shaft 31 and a piercing blade 32 that can rotate around the center shaft 31 to perform circular piercing, and the center shaft 31 moves relative to the piercing blade 32 as the drilling progresses. There are a type that relatively moves and a type that the perforation blade 32 and the center shaft 31 move together, and any type may be used. The illustrated hole saw F is of the former type, and the center shaft 31 does not have a drill function, but the center shaft 31 of the latter type of hole saw has a drill function. 3A and 3B, reference numeral 33 denotes a cover that covers the drilling blade 32. When the center shaft 31 of the hole saw F is applied to the center position C ₂₁ of the first circular drilling and the drilling blade 32 is pressed against the wall plate 2, the center shaft 31 does not move in the front-rear direction with respect to the wall plate 2. while, the cutting head 32 is advanced, the first through hole H ₁₁ is formed. Since the ventilation pipe holder S is fixed to the side surface 1a of the column 1 at a position slightly retracted from the side surface 1b, the ventilation pipe holder S is also present due to the presence of the gap even when the hole saw F is drilled. There is no possibility of damaging the front surface of the main body 11 of the main body 11. Note that after the first through hole H ₁₁ is drilled, the detected tool 17 is removed from the ventilation pipe holder S in order to enable setting of the center position indicator E ₁ to be set later.

Next, using the center position display device E _1, and displays the center position C ₂₂ of second circular perforations to the other wall plate 3. The center position C ₂₂ corresponds to the fact that the axis C ₁₂ of the pipe connection cylinder 18 of the ventilation pipe holder S is inclined downward by an angle (θ) with respect to the axis C ₁₁ of the opening 21. as the inclination angle between the line segment and the horizontal line connecting the first circular perforations of the center position C ₂₁ and a second yen perforated center position C ₂₂ is the angle (theta), the center position of the second circular perforation C ₂₂ needs to be arranged vertically downward by a predetermined length with respect to a horizontal axis passing through the first circular perforation center position C _21. The center position indicator E ₁ is an instrument that can easily and reliably display the center position C ₂₁ of the second circular perforation so as to satisfy the above conditions.

Referring now to FIGS, it will be briefly described center position display device E _1. FIGS. 8A and 8B are perspective views of the center position indicator E ₁ as viewed from the front and the back, respectively. FIG. 9 shows a state in which the center position indicator E ₁ is set on the ventilation pipe holder S. FIG. 10 is a cross-sectional view, and FIG. 10 shows an axial center C ₃₁ passing through the center position C ₂₁ of the first through hole H ₁₁ formed in the wall plate 2 and an axial center passing through the center position C ₂₂ of the second through hole H _12. is a diagram illustrating the angle between the axis C ₃₁ and the straight line L connecting the C ₃₂ is (theta). The center position indicator E ₁ includes a flat attachment plate portion 41 formed on an arc surface in which both end surfaces in the longitudinal direction can be fitted to the inner peripheral surface of the opening 21 of the ventilation pipe holder S, and the attachment A pair of upper and lower insertions having a circular arc shape on the back side of the plate portion 41 and projecting toward the back side at both ends in the longitudinal direction so as to be inserted up to the pipe connecting cylinder 18 portion of the holder S Guide pieces 42a and 42b, and a guide tube portion 43 projecting perpendicularly to the mounting plate portion 41 toward the back side at the longitudinal center of the mounting plate portion 41 on the back side; A pair of fitting protrusions 44 and 45 which are provided on both end faces in the longitudinal direction of the mounting plate 41 so as to face in opposite directions and are fitted into the pair of upper and lower fitting grooves 22 of the holder S; It has. Here, the axis C ₁₃ of the guide tube portion 43 is disposed at the center of a line segment connecting the pair of fitting protrusions 44 and 45, and the fitting protrusions 44 and 45 correspond to the mounting plate portion 41. The longitudinal projections 44b and 45b are integrally formed on the front or back of the longitudinal projections 44a and 45a formed along the longitudinal direction. Longitudinal direction projections body 44b, the projecting length of 45b is in a state of fitted into the groove 22 the fitting each of the holder S and the fitting protrusions 44 and 45, the axis C ₁₃ of the guide tube portion 43 holds and the axis C ₁₂ of the pipe connecting tube 18 of the tool S is are determined to match. In addition, the insertion guide piece 42b disposed below is missing a central portion in a direction orthogonal to the protruding direction in order to avoid interference with the insertion restriction piece 26 of the holder S.

For this reason, as shown in FIGS. 3A and 9, the longitudinal direction of the attachment plate portion 41 (with the guide tube portion 43 of the center position indicator E ₁ protruding toward the back side) (see FIG. When the fitting protrusions 44 and 45 formed at both ends in the set direction are fitted into the fitting grooves 22 of the ventilation pipe holder S, the bottom surface of the upper fitting groove 22 is The longitudinal projection part 44a of the fitting projection 44 abuts, and the front and rear projection part 45b of the fitting projection 45 abuts the bottom surface of the fitting groove 22 below, so that the guide tube part axis C ₁₃ of 43, by an angle (theta) inclined downwardly with respect to the axis C ₁₁ of the ventilation pipe retainer S of the opening 21. For this reason, as shown in FIG. 3B (D), FIG. 6 and FIG. 10, the double wall W inserted through the guide tube portion 43 of the center position indicator E ₁ set in the ventilation pipe holder S. the long drill 71 of penetrable lengths and drilling the center position display through hole 51 to another wall panel 3, the axis position (center position display device E ₁ of the guide tube portion of the center position displayed through hole 51 The position where the extension line of the axis C ₁₃ of 43 and the wall plate 3 intersect) is the center position C ₂₂ of the second circular drilling with respect to the wall plate 3. As shown in FIG. 10, a straight line L connecting the center positions C ₂₁ and C ₂₂ of the first and second circular perforations is formed on the wall plate by the first circular perforation centered on the center position C _21. It is inclined downward by an angle (θ) with respect to the axis C ₃₁ of the first through hole H ₁₁ . Note that the upper and lower through-holes 43a of the attachment plate portion 41 of the center position display device E _1, a pair of through holes 46 for improving the deeper visibility is formed.

The center position indicator E ₁ is predetermined below an axis passing through the center position C ₂₁ of the first circular perforation with respect to the wall plate 2 (a straight line passing through the center position and perpendicular to the wall plate 2). the distance away, a device for displaying the second circular perforations of the center position C ₂₂ relative to the wall plate 3, the guide tube portion perpendicular to the plate surface in the central portion in the longitudinal direction of the attachment plate portion 41 43 is formed, and fitting protrusions 44 and 45 are formed on opposite surfaces of both ends in the longitudinal direction of the mounting plate portion 41, but in the central portion in the longitudinal direction of the mounting plate portion 41. It is also possible to form the guide tube portion 43 to be formed by inclining it with respect to the mounting plate portion 41 by a set angle.

As shown in FIG. 3A (C), the center position indicator E ₁ is set in the pair of upper and lower fitting grooves 22 formed in the ventilation pipe holder S as described above, and in this state, As shown in FIGS. 3B and 6, the long drill 71 is inserted into the through hole 43 a of the guide cylinder portion 43 of the center position indicator E ₁ , and the first through hole H ₁₁ is drilled. When the center position display through hole 51 is formed with respect to another wall plate 3 facing the wall plate 2, the axis of the center position display through hole 51 is aligned with the center position C ₂₂ of the second circular drilling with respect to the wall plate 3. Become.

Next, as shown in FIG. 3B (E), the wall plate 3 is formed by a hole saw F with the center position C ₂₂ being the axis of the center position display through hole 51 formed in the wall plate 3 as a center. the Doing second circular perforations, as shown in FIG. 10, the vertically downward of the axis C ₃₁ through center position C ₂₁ of the first hole H ₁₁ drilled in the wall plate 2 by first circular perforation the second through hole H ₁₂ having a center position C ₂₂ at a position separated by a predetermined length is formed in another wall plate 3, each of the first and second permeable formed in each wall plates 2 facing The above relationship that the holes H ₁₁ and H ₁₂ have is referred to as a “specific relationship” in claim 2. The center of the center position display through-hole 51 that forms the center position C ₂₂ that is the center of the second circular drilling is inclined with respect to the wall plate 3 by an angle (θ). 32 is perpendicular to the wall plate 3 and the second through hole H ₁₂ is drilled. After the second through hole H ₁₂ is drilled, the center position indicator E ₁ is removed from the ventilation pipe holder S.

Finally, as shown in FIG. 3B (f), the ventilation pipe P is connected to the column 1 in the double wall W from the outside of the wall plate 3 through the second through hole H ₁₂ drilled in the wall plate 3. When inserted into the pipe connection cylinder 18 of the fixed ventilation pipe holder S, the ventilation pipe P is inclined to the holder S by the same angle as the inclination angle (θ) of the axis C ₁₂ of the pipe connection cylinder 18. Hold in posture. In FIG. 3B (f), the shaft C ₃₁ passing through the center position C ₂₁ of the first through hole H ₁₁ formed in the wall plate 2 and the center position C ₂₂ of the second through hole H ₁₂ are passed. Strictly speaking, the straight line L connecting the axis C ₃₂ and the axis C ₁₂ of the pipe connecting cylinder 18 are parallel to each other and slightly deviated in the vertical direction, but this deviation is small. The axis C ₁₂ and the straight line L are considered to be on the same straight line.

As shown in FIG. 7, the front plate 61 of the ventilation fan V is disposed on the front side of the wall plate 2, and the main body 62 of the ventilation fan V passes through the opening 21 of the ventilation pipe holder S and the ventilation pipe. The front plate 61 of the ventilation fan V is disposed inside the P (the space 4 of the double wall W) and is fixed to the main body 11 of the ventilation pipe holder S via a pair of upper and lower screws B _2, and the main body 11, a cover 63 is fitted.

In the above embodiment, the axis C ₃₂ of the second hole H ₁₂ is a position lower than the axis C ₃₁ of the first hole H _11, ventilation pipe holder S for the center position display device E _When the set direction of ₁ is turned upside down with respect to the above direction, the axis C ₃₂ of the second through hole H ₁₂ is arranged at a position higher than the axis C ₃₁ of the first through hole H ₁₁ , and each axis Although the inclination angles of the straight lines connecting the centers C ₃₁ and C ₃₂ are the same, the inclination directions are different.

Next, a method for forming the through hole H ₂ in the double wall W will be described with reference to FIGS. 11, 12A and 12B. FIG. 11 is a perspective view of the center position indicator E ₂ used for carrying out the above through hole forming method as seen from the back side, and FIGS. 12-A and 12-B (A) to (D). is a cross-sectional view illustrating a process of forming a through hole H ₂ using a center position display device E ₂ double wall W. As shown in FIG. 11 and FIG. 12-A (B), the center position indicator E ₂ is formed in a shallow box shape, and each first side plate portion 81 along the longitudinal direction has a flat plate shape. Each second side plate portion 82 arranged along the short direction (width direction) and facing along the longitudinal direction is formed in an arc shape corresponding to the inner diameter of the through hole set by the longitudinal section. A contact plate portion 83 that protrudes outward in a flange shape is formed in parallel with the bottom plate portion 84 at the end of the second side plate portion 82 on the opening side. A central portion in the width direction of the second side plate portion 82 is cut out in a U shape in a form in which a part has entered the bottom plate portion 84, and an elastic piece 85 having an open side as a free end portion is formed. On the outer surface of the elastic piece 85, an uneven portion 85a is formed for increasing the engaging force with respect to the inner peripheral surface of the through hole to be set. When the elastic piece 85 is not deformed, its outer surface protrudes outward from the outer surface of the first side plate portion 81. In addition, a guide tube portion 86 having a predetermined length for inserting and positioning the long drill 71 is projected from the center portion of both the longitudinal direction and the width direction of the back surface of the bottom plate portion 84. An axis C ₁₄ of the guide tube portion 86 is perpendicular to the bottom plate portion 84.

The structure of the double wall W is as described above. The center position C ₄₁ of the first perforation with respect to the wall plate 2 that has been previously identified is marked, and the wall plate 2 is formed using the hole saw F. The first through hole H ₂₁ is formed [FIG. Next, when the center position indicator E ₂ is pressed against the first through hole H ₂₁ from the outside of the first through hole H ₂₁ formed in the wall plate 2, the pair of elastic pieces 85 are elastically deformed inward. together is, by the elastic restoring force of the elastic piece 85, concavo-convex portion 85a of the outer becomes a state of being set as it is engaged with the inner peripheral surface of the first hole H ₂₁ [Figure 12-a (b )]]. In this state, the axis C ₁₄ of the guide tube portion 86 center position display device E ₂ is to be placed on the axis C ₅₁ of the first hole H _21, the center position display device E ₂ the guide tube portion by inserting a long drill 71 to 86 of the through hole 86a, to form a separate wall plate 3 to the center position display through hole 91 facing the wall plate 2 where the first hole H ₂₁ is formed, the center position display The axis of the through hole 91 is the axis C ₅₁ of the first through hole H ₂₁ .

Next, when the second through hole H ₂₂ is formed by the hole saw F with the center C ₅₁ of the center position display through hole 91 as the center position of the second circular drilling with respect to the wall plate 3, the through hole H is formed in the double wall W. ₂ is formed [FIG. 12-B (c), (d)]. The axial centers C ₅₁ and C ₅₂ of the first and _second through holes H ₂₁ and H ₂₂ constituting the through hole H ₂ are horizontal and coincide with each other. The through-holes H _2, for example ventilation pipe P or the like is inserted a pipe.

Further, the center position display device E ₂ described above, although the axis C ₁₄ of the guide tube portion 86 is perpendicular to the bottom plate portion 84, by a predetermined angle the axis C ₁₄ with respect to the bottom plate portion 84 When inclined, the straight line connecting the centers of the first and second circular perforations with respect to the wall plates 2 and 3 is inclined by the predetermined angle as described above. It becomes possible to make it.

Also, certain second yen perforated center position C ₄₂ relative to the wall plate 3, as in the above example, when drilling a center position display through hole 91 using the center position display device E _2, the center position C ₄₂ However, the center position C ₄₂ is marked on the inner side of the wall plate 3, and then a through-hole is drilled in the wall plate 3 with a center drill based on the scored position. May be.

FIG. 3 is a perspective view of a state in which a ventilation pipe holder S is fixed to a pillar 1 standing in a double wall W. It is a center longitudinal cross-sectional view of the ventilation pipe holder S. (A) thru | or (C) are the longitudinal cross-sectional views of the double wall W explaining a construction order. (D) thru | or (f) are the longitudinal cross-sectional views of the double wall W explaining a construction order. The position of the axis C ₁₁ of the opening 21 of the double wall W ventilation pipe holder S which is disposed in the space portion 4 of a perspective view of a state where the detection by the magnetic detector A. FIG. 5 is a perspective view of a state in which a center position indicator E ₁ is set on a ventilation pipe holder S through a first through hole H ₁₁ formed in a wall plate 2. It is a perspective view in the state where the center position of the second circular drilling with respect to the wall plate 3 is displayed using the center position indicator E ₁ and the long drill 71 set on the ventilation pipe holder S. It is a perspective view which shows the state which attaches the ventilation fan V with respect to the ventilation pipe holder S arrange | positioned in the space part 4 of the double wall W. FIG. (A), (b) is a perspective view of the respective center position display device E ₁ from the front and back. Is a cross sectional view showing a state in which setting the center position display device E ₁ to the ventilation pipe holder S. The straight line L connecting the axis C ₃₁ passing through the center position C ₂₁ of the first through hole H ₁₁ formed in the wall plate 2 and the axis C ₃₂ passing through the center position C ₂₂ of the second through hole H ₁₂ , and the above-mentioned it is a diagram illustrating that the angle between the axis C ₃₁ is a (theta). The center position display device E ₂ is a perspective view from the rear side. (A) and (b) are cross-sectional views illustrating a process of forming a through hole H ₂ using a center position display device E ₂ double wall W. (C) and (D) are cross-sectional views illustrating the order in which the through hole H ₂ is formed in the double wall W using the center position indicator E ₂ .

Explanation of symbols

A: Magnetic detector
C ₁₁ : Axis of opening of ventilation pipe holder
C ₁₂ : Axis of pipe connection cylinder of ventilation pipe holder
C ₁₃ and C ₁₄ : Center axis of the guide tube portion of the center position indicator
C ₂₁ : Center position of the first circular drilling of the through hole H ₁
C ₂₂ : Center position of the second circular drilling of the through hole H ₁
C ₃₁ : axis of the first through hole H ₁₁ of the through hole H ₁
C ₃₂ : axis of the second through hole H ₁₂ of the through hole H ₁
C ₄₁ : Center position of the first circular drilling of the through hole H ₂
C ₄₂ : Center position of the second circular drilling of the through hole H ₂
C ₅₁ : axis of the first through hole H ₂₁ of the through hole H ₂
C ₅₂ : axis of the second through hole H ₂₂ of the through hole H ₂
E ₁ , E ₂ : Center position indicator
F: Hole saw
H ₁ , H ₂ : Through hole
H ₁₁ , H ₂₁ : 1st through hole
H _12, H _22: second through hole
L: A straight line passing through the center position of each of the first and second circular perforations
P: Ventilation pipe
S: Ventilation pipe holder (arrangement body)
W: Double wall
1: Pillar
2,3: Wall board
4: Space
11: Ventilation pipe holder body
16: Magnet
17: Detected tool
22: Insertion groove
31: Center shaft
32: Drilling blade
41: Mounting plate
43: Guide tube
44, 45: fitting protrusions
51, 91: Center position display through hole (center position display hole)
71: Long drill (center drill)

Claims (8)

Each wall plate is erected oppositely through a space portion to form a double wall, and the two wall plates are arranged so as to penetrate the fluid flow passages and wiring / piping materials on both sides of the double wall. A method of forming a through hole in a heavy wall,
A first circle penetrating the one wall plate from the outside of the one wall plate using a drilling tool comprising a center shaft and a drilling blade capable of forming a circular hole by rotating around the center shaft A center position indicator that forms a first through hole by drilling and displays the center position of the second through hole scheduled to be formed on the other wall plate with respect to the first through hole is provided from the outside of the one wall plate. By placing on the wall plate, the center position of the second circular perforation relative to the other wall plate is specified,
The center position of the second circular perforation specified by the center position indicator is directed to the other wall plate with a drill having a length capable of penetrating the double wall from the outside of the one wall plate through the first through hole. By forming a through hole, a center position display hole for displaying the center position of the second circular drilling is formed,
The center position display hole formed in the other wall plate is applied to the center axis of the punching tool from the inside of the other wall plate, and the other circular plate is centered on the center position display hole to perform the other circular hole A method for forming a through hole in a double wall, comprising: forming a second through hole having a specific positional relationship with the first through hole in a wall plate. Each wall plate is erected oppositely through a space portion to form a double wall, and a disposition body is disposed in the space portion, and a fluid flow path, wiring, and piping are provided on both sides of the double wall. A method of forming a through-hole in the double wall to dispose the material so as to penetrate through the disposing body,
The first wall plate is moved from the outside of the one wall plate by first circular drilling using a drilling tool including a center shaft and a drilling blade capable of forming a circular hole by rotating around the center shaft. Penetrating, forming an opening of the arrangement body disposed in the space portion to form a first through hole facing the outside of the one wall plate,
A center position indicator that is disposed in the opening of the arrangement body facing the first through hole and displays the center position of the second through hole scheduled to be formed on the other wall plate, or formed on the arrangement body. The center position of the second circular perforation specified by the center position display unit that displays the center position of the second through hole is passed through the first through hole and the arrangement body, and a double wall is formed from the outside of one wall plate. By forming a through-hole toward the inside of the other wall plate with a drill having a penetrable length, a center position display hole for displaying the center position of the second circular drilling is formed,
The center axis of the drilling tool is applied to the center position display hole from the outside of the other wall plate, and the second wall plate is centered on the center position display hole, so that the other wall plate has a first through hole. A method for forming a through hole in a double wall, comprising forming a second through hole having a specific positional relationship.   The arrangement body includes a detected portion that can be detected from the outside of one wall plate in order to specify the center position of the first through hole for allowing the opening to face the wall surface. 3. The double wall according to claim 2, wherein the detected portion is detected from the outside of the first wall, the center position of the first circular drilling is specified by the detection, and the first through hole is formed. Through-hole forming method.   The specified center position of the second circular perforation is a position that passes through the center of the first circular perforation and is shifted vertically upward or vertically downward with respect to an axis perpendicular to the wall plate. The through-hole formation method to the double wall in any one of Claims 1 thru | or 3. Each wall plate is erected oppositely through a space portion to form a double wall, a ventilation pipe holder is disposed in the space portion, and the double wall passes through an opening of the ventilation pipe holder. A method of forming a through hole and arranging a ventilation pipe in the through hole,
A first through hole is formed so that the opening of the ventilation pipe holder disposed in the space portion faces the wall surface from the outside of the one wall plate to the one wall plate by the first circular drilling,
A center position indicator having a display section for displaying the center position of the second through hole to be formed on the other wall plate is attached to the ventilation pipe holder whose opening faces the wall surface by the first through hole. And
The length at which the center position of the second circular perforation displayed by the display unit of the center position indicator can penetrate the double wall inserted through the first through hole from the outside of the one wall plate Formed by a through hole drilled in the other wall plate by the drill of
Forming a second through hole in the other wall plate by a second circular drilling centered on the through hole;
By inserting a ventilation pipe from the outside of the double wall into the through-hole formed in the double wall by the first and second circular perforations, and holding the ventilation pipe holder inside the wall, A method for arranging a ventilation pipe on a double wall, characterized in that a ventilation pipe is arranged for the through hole. Each wall plate is erected so as to face each other through a space portion to form a double wall, and a disposition body is disposed in the space portion, and a fluid flow path and a wiring are arranged on both sides of the double wall. A display tool for displaying a center position of the through hole with respect to one of the wall plates when the through hole is formed in the double wall to be disposed so as to penetrate the piping material;
An attachment portion attachable to the arrangement body disposed in the wall from the wall surface through the first through hole formed in the one wall plate by the first circular hole;
A display unit for displaying the center position of the second through hole scheduled to be formed on the other wall plate by the second circular perforation,
The display part is constituted by a guide part for guiding a drill penetrating through the first through hole and inserted into the wall to the center position of the second through hole scheduled to be formed on the other wall plate. A center position indicator.   The center position indicator according to claim 6, wherein the guide portion is formed in a cylindrical shape so that a drill can pass therethrough.   In the state of being attached to the arrangement body, it is scheduled to be formed on the other wall plate at a position shifted vertically upward or vertically downward with respect to the axis of the center position of the first through hole formed on one wall plate. In order to display the center position of the second through hole, the guide portion is inclined with respect to the attachment portion, or the attachment portion is disposed with respect to the arrangement body so that the guide portion is inclined with respect to a horizontal line. The center position indicator according to claim 6 or 7, wherein the center position indicator is attachable.

Images