JP4938417B2

JP4938417B2 - Exhaust fan fixing base and method of attaching the exhaust fan

Info

Publication number: JP4938417B2
Application number: JP2006304920A
Authority: JP
Inventors: 裕一川村
Original assignee: Mirai Kogyo KK
Current assignee: Mirai Kogyo KK
Priority date: 2006-11-10
Filing date: 2006-11-10
Publication date: 2012-05-23
Anticipated expiration: 2026-11-10
Also published as: JP2008121954A

Description

本発明は、換気扇を取付けるために壁板に円穿孔された開口の内側の壁内の柱、胴縁等の造営材に固定配置されて、前記換気扇を固定するための換気扇固定台座、及び換気扇の取着方法に関するものである。 The present invention relates to a ventilation fan fixing base for fixing the ventilation fan, which is fixedly disposed on a construction material such as a pillar, a trunk edge or the like inside a wall inside an opening circularly drilled in a wall plate for mounting the ventilation fan , and a ventilation fan It is related to the attachment method .

換気扇を壁に固定するには、壁を構成する壁板に形成された開口の裏側の周縁に「当木」と称される木製枠を固定し、この「当木」に換気扇の本体を固定していた（特許文献１）。このため、「当木」の使用が不可欠であったと共に、「当木」を構成する各木製枠片を一本ずつ壁板に釘を使用して固定する必要があり、この作業が大変に面倒であった。 In order to fix the ventilation fan to the wall, a wooden frame called “Toki” is fixed to the periphery on the back side of the opening formed in the wall plate that constitutes the wall, and the main body of the ventilation fan is fixed to this “Toki” (Patent Document 1). For this reason, the use of “Toki” was indispensable, and it was necessary to fix each wooden frame piece constituting “Togi” to the wall plate one by one with nails, which was very difficult. It was troublesome.

また、換気扇を固定するには、壁内に配置されて、換気扇固定台座に接続された換気パイプの開口が壁表に臨むように、壁板に円形開口を形成する必要がある。しかし、壁内に配置された換気パイプの開口の中心位置と同心にして、壁板に前記円形開口を穿孔するのは難しく、換気パイプの開口の中心位置と、壁板に形成された円形開口の中心位置とが許容限度を超えてずれた場合には、換気扇と換気パイプの接続ができなくなる。
特開平７−６３３８８号公報 Moreover, in order to fix a ventilation fan, it is necessary to form circular opening in a wall board so that the opening of the ventilation pipe arrange | positioned in a wall and connected to the ventilation fan fixing base may face a wall surface. However, it is difficult to drill the circular opening in the wall plate concentrically with the central position of the opening of the ventilation pipe arranged in the wall, and the central position of the opening of the ventilation pipe and the circular opening formed in the wall plate If the center position of the fan deviates beyond the allowable limit, the ventilation fan and the ventilation pipe cannot be connected.
JP 7-63388 A

本発明は、従来の「当木」を使用することなく、壁裏から壁表に至る部分に換気扇を大きな強度でしっかりと固定できるようにすると共に、換気パイプの開口を壁表に臨ませるために壁表側の壁板に円穿孔により形成する円形開口の穿孔作業を容易にすることを課題としている。 The present invention makes it possible to fix the ventilation fan firmly and with high strength from the back of the wall to the surface of the wall without using the conventional “tree”, and to make the opening of the ventilation pipe face the surface of the wall Another object of the present invention is to facilitate the drilling of a circular opening formed in the wall plate on the front side of the wall by circular drilling.

上記課題を解決するための請求項１に記載の発明は、取着用の前板を有する換気扇を取着するために壁内に固定配設される換気扇固定台座であって、壁内の柱、胴縁等の造営材に固定される固定部と、壁内に配管される換気パイプが接続される換気パイプ接続部と、前記換気パイプと連通して壁表側に開口する開口部と、壁表側から前記換気扇が取着される取着部と、壁内の前記造営材に固定された状態の換気扇固定台座の壁表となる側に立設された壁板に対して、前記開口部を壁表に臨ませるために壁表側から前記壁板に円形開口を穿孔する際の穿孔中心位置を特定すべく壁表側から探知器により探知可能な被探知部とを備え、前記取着部は、前記壁板における穿孔済の前記円形開口の外側の部分を貫通して、前記換気扇を取着するためのビスが螺入されるように、前記開口部の外側に設けられ、前記壁板の前面に配置される換気扇の前板と当該換気扇固定台座とで当該壁板を挟持する形態で、前記壁板を貫通するビスを介して当該換気扇が当該換気扇固定台座に取着される構成であることを特徴としている。 The invention according to claim 1 for solving the above-mentioned problem is a ventilation fan fixing pedestal fixedly arranged in a wall for attaching a ventilation fan having a front plate for attachment , and a pillar in the wall, A fixed part fixed to a construction material such as a trunk edge, a ventilation pipe connecting part to which a ventilation pipe piped in the wall is connected, an opening communicating with the ventilation pipe and opening to the wall front side, and the wall front side The opening portion is walled with respect to a wall plate erected on the wall surface side of the attachment portion to which the ventilation fan is attached and the ventilation fan fixing base fixed to the construction material in the wall. and a to be detected portion capable detector by detector from the wall surface side so as to identify the drilling center position when drilling a circular opening from the wall front in order to face the said wall plate table, said mounting portion, said For attaching the ventilation fan through the outer part of the perforated circular opening in the wallboard The wall plate is sandwiched between the front plate of the ventilation fan disposed on the front surface of the wall plate and the ventilation fan fixing pedestal so as to be screwed into the opening. The ventilation fan is configured to be attached to the ventilation fan fixing base through a screw passing through the fan .

請求項１の発明においては、壁板に形成された円形開口の内側の壁内の造営材に換気扇固定台座を固定して、当該固定台座に前記換気扇を取着するには、壁内の造営材に固定された換気扇固定台座の被探知部を探知器により壁表側から探知し、当該探知位置を基準にして、壁内の換気扇固定台座の開口部を壁表に臨ませるための円形開口の穿孔中心位置を特定し、壁板に前記穿孔中心位置を中心とする円穿孔を行って前記円形開口を形成する。前記円形開口の形成後には、当該円形開口を利用して壁表側から換気扇を壁裏側に挿入して、前記壁板の前面に配置される換気扇の前板と当該換気扇固定台座とで当該壁板を挟持する形態で、当該壁板を貫通するビスを介して当該換気扇を固定台座に取着すると共に、壁裏側から換気パイプを挿入して、当該換気パイプの先端部を固定台座の換気パイプ接続部に接続すると、壁表側に配置された換気扇と壁裏側に配置された換気パイプとが、壁内に配置された換気扇固定台座を介して接続される。 In the invention of claim 1, in order to fix the ventilation fan fixing base to the construction material in the wall inside the circular opening formed in the wall plate and attach the ventilation fan to the fixing base, the construction in the wall The detected part of the ventilation fan fixed base fixed to the material is detected from the front side of the wall by a detector, and the circular opening to make the opening of the ventilation fan fixing base in the wall face the wall surface with the detected position as a reference. The center position of the piercing is specified, and the circular opening is formed in the wall plate by circular piercing centering on the position of the piercing center. After the formation of the circular opening, a ventilation fan is inserted from the front side of the wall into the back side of the wall using the circular opening, and the wall plate includes the front plate of the ventilation fan disposed on the front surface of the wall plate and the ventilation fan fixing base. Attach the ventilation fan to the fixed base via a screw that penetrates the wall plate , insert the ventilation pipe from the back side of the wall, and connect the tip of the ventilation pipe to the ventilation pipe of the fixed base If it connects to a part, the ventilation fan arrange | positioned at the wall surface side and the ventilation pipe arrange | positioned at the wall back side will be connected via the ventilation fan fixed base arrange | positioned in the wall.

また、請求項２の発明は、請求項１の発明において、前記被探知部は、前記開口部以外の部分に壁表側に向けて複数配置されていることを特徴としている。 The invention of claim 2 is characterized in that, in the invention of claim 1, a plurality of the detected parts are arranged on the wall surface side in a portion other than the opening.

請求項２の発明においては、固定台座に配置された複数の被探知部を壁表側から探知し、当該複数の探知位置に基づいて、壁内の換気扇固定台座の開口部を壁表に臨ませるための開口の穿孔中心位置を特定する。 In the invention of claim 2, a plurality of detected parts arranged on the fixed base are detected from the wall surface side, and the openings of the ventilation fan fixing base in the wall are made to face the wall surface based on the plurality of detection positions. The center position of the hole for the opening is specified.

また、請求項３の発明は、請求項１の発明において、前記被探知部は、前記開口部内を架け渡るように架設された架設部に設けられ、当該架設部は、前記円穿孔の際に壁板を貫通する穿孔刃と干渉しないように、開口部の壁表側から後退した位置に形成され、前記被探知部は架設部から壁表側に向けて立設した立設部の先端側に設けられていることを特徴としている。 According to a third aspect of the present invention, in the first aspect of the present invention, the detected part is provided in a construction part constructed so as to span the opening, and the construction part is provided at the time of the circular drilling. It is formed at a position retracted from the wall surface side of the opening so as not to interfere with the drilling blade that penetrates the wall plate, and the detected part is provided on the tip side of the standing part that is erected from the installation part toward the wall surface side. It is characterized by being.

請求項３の発明によれば、固定台座の開口部内を架け渡るように架設された架設部は、開口部の壁表側から後退した位置に形成されているため、壁板を円穿孔する穿孔刃が当該壁板を貫通した後においても、架設部と干渉しない。また、被探知部は、架設部に壁表側に向けて立設された立設部の先端側に設けられていて、壁表から最も近い位置に配置されているので、探知器により壁表から行う被探知部の探知が容易になると共に、探知精度も高まる。 According to the invention of claim 3, since the erected part that is constructed so as to cross over the opening of the fixed base is formed at a position retracted from the front side of the wall of the opening, the piercing blade for circularly piercing the wall plate Even after passing through the wall plate, it does not interfere with the erection part. In addition, the detected part is provided at the front end side of the standing part that is erected on the erection part toward the wall surface side, and is disposed at a position closest to the wall surface. The detection of the detected part to be performed is facilitated and the detection accuracy is increased.

また、請求項４の発明は、請求項３の発明において、前記被探知部は、前記円穿孔の穿孔中心位置に配置されていることを特徴としている。 According to a fourth aspect of the present invention, in the third aspect of the present invention, the detected portion is arranged at a drilling center position of the circular drilling.

請求項４の発明によれば、壁表から行う被探知部の探知位置が、そのまま円穿孔の穿孔中心位置となるため、壁内に配置された被探知部の探知作業が一回で済むと共に、前記穿孔中心位置の探知精度も高まる。 According to the invention of claim 4, since the detection position of the detected part performed from the wall surface is directly the drilling center position of the circular drilling, the detection work of the detected part arranged in the wall can be performed only once. Further, the detection accuracy of the drilling center position is also increased.

また、請求項５の発明は、請求項４の発明において、前記立設部は、前記円穿孔による穿孔具のセンタードリルが進入可能な進入口を壁表側に有する筒状に形成され、前記進入口から内部進入した前記センタードリルの押圧により前記被探知部が、壁裏側に移動可能な後退空間を有していることを特徴としている。 According to a fifth aspect of the present invention, in the invention of the fourth aspect, the standing portion is formed in a cylindrical shape having an entrance on the front side of the wall through which a center drill of the drilling tool by the circular drilling can enter. The to-be-detected part has a retreat space that can move to the back side of the wall by pressing of the center drill that has entered inside from the mouth.

請求項５の発明によれば、壁板に円穿孔を行う前の被探知部の探知時には、立設部の最も壁表側に被探知部を配置しておくことにより、探知され易くなる。また、円穿孔時において、穿孔具のセンター軸がドリルで構成されている場合には、被探知部の背面に後退空間が形成されているため、穿孔に伴ってセンタードリルが前進して被探知部を壁裏側に押圧移動させる。このため、円穿孔の穿孔中心位置に被探知部が配置されていても、支障なく円穿孔を行える。なお、センター軸により壁板が穿孔されない構成の穿孔具の場合には、被探知部の後退、及びセンター軸との接触はない。 According to the fifth aspect of the present invention, when the detected portion is detected before the hole drilling is performed on the wall plate, the detected portion can be easily detected by arranging the detected portion on the most front side of the standing portion. In addition, when the center shaft of the drilling tool is configured with a drill during circular drilling, a receding space is formed on the back surface of the detected part. The part is pressed and moved to the back side of the wall. For this reason, even if the detected part is arranged at the drilling center position of the circular drilling, the circular drilling can be performed without any trouble. Note that in the case of a drilling tool in which the wall plate is not drilled by the center shaft, there is no retreat of the detected portion and no contact with the center shaft.

また、請求項６の発明は、請求項５の発明において、前記被探知部は、筒状の立設部に圧入により保持されていることを特徴としている。 The invention of claim 6 is characterized in that, in the invention of claim 5, the detected part is held by press-fitting in a cylindrical standing part.

請求項６の発明によれば、筒状の立設部に被探知部が圧入保持されているため、通常の取扱い時には、被探知部は立設部の先端部（最も壁表側）に配置されていて移動しないと共に、穿孔刃と一体となって移動するセンタードリルを備えた穿孔具を使用する場合には、前記センタードリルの前進により後方の後退空間の側に移動させられる。よって、壁内の被探知部の探知、及びセンタードリルを備えた穿孔具による円穿孔の作業の双方を支障なく行える。 According to the sixth aspect of the present invention, since the detected portion is press-fitted and held in the cylindrical standing portion, the detected portion is disposed at the tip portion (most wall side) of the standing portion during normal handling. In the case of using a drilling tool provided with a center drill that moves integrally with the drilling blade while not moving, the center drill is moved forward to the backward space side. Therefore, it is possible to perform both the detection of the detected part in the wall and the circular drilling work by the drilling tool provided with the center drill without any trouble.

また、請求項７の発明は、請求項４の発明において、前記立設部は、前記円穿孔による穿孔具のセンタードリルが進入可能な進入口を壁表側に有する筒状に形成され、前記被探知部は、前記被探知部の壁表側となる先端面に前記進入口を塞ぐようにして配置されていると共に、前記壁板を貫通したセンタードリルの前記進入口内への進入を妨げないように、前記センタードリルにより容易に突き破り可能な薄さに形成されていることを特徴としている。請求項７の発明によれば、被探知部は、穿孔具のセンタードリルにより突き破り可能な薄さに形成され、しかも前記立設部の先端部の進入口を塞ぐように先端面に配置されているため、壁表側から行う被探知部の探知が容易になると共に、穿孔刃と一体に前後動するセンタードリルを備えた穿孔具を使用した場合でも、支障なく円穿孔を行える。 According to a seventh aspect of the present invention, in the invention of the fourth aspect, the upright portion is formed in a cylindrical shape having an entrance on the front side of the wall through which a center drill of the drilling tool by the circular drilling can enter. The detection unit is arranged so as to block the entrance into the front end surface on the wall surface side of the detected unit, and so as not to prevent the center drill penetrating the wall plate from entering the entrance. It is characterized in that it is formed thin enough to be easily pierced by the center drill. According to the seventh aspect of the present invention, the detected part is formed to be thin enough to be pierced by the center drill of the drilling tool, and is arranged on the tip surface so as to close the entrance of the tip part of the standing part. Therefore, it is easy to detect the detected portion from the front side of the wall, and circular drilling can be performed without any trouble even when a drilling tool having a center drill that moves back and forth integrally with the drilling blade is used.

また、請求項８の発明は、請求項１ないし７のいずれかの発明において、前記被探知部は、磁石体であることを特徴としており、磁石体は、被探知力が大きくて、再利用も可能となる。 The invention of claim 8 is characterized in that, in the invention of any one of claims 1 to 7, the detected portion is a magnet body, and the magnet body has a large detection force and is reused. Is also possible.

また、請求項９の発明は、請求項１ないし８のいずれかの換気扇固定台座を壁内の前記造営材に固定し、前記壁板上の特定された穿孔中心位置を中心として、当該壁板の表側から、前記換気扇固定台座の開口部の内側のみを壁表に臨ませ得る円形開口を当該壁板に穿孔し、前記換気扇を取着するビスを、前記壁板における前記円形開口の周囲の部分を貫通させて換気扇固定台座の取着部に螺入させることで、前記壁板の外側に配置された換気扇の前板と換気扇固定台座とで当該壁板を挟持する形態で、当該換気扇を当該換気扇固定台座に取着することを特徴としている。請求項９の発明によれば、壁板の表側から、壁板上の特定された穿孔中心位置を中心として、換気扇固定台座の開口部のみを壁表に臨ませ得る円形開口を穿孔した後に、当該円形開口から壁板の裏側に換気扇を挿入して、当該換気扇の前板と換気扇固定台座とで当該壁板が挟持された形態で、壁表側から当該壁板を貫通させて換気扇固定台座の取着部に螺入されたビスにより、当該換気扇固定台座に換気扇を取着できる。The invention according to claim 9 is the wall plate, wherein the ventilation fan fixing pedestal according to any one of claims 1 to 8 is fixed to the building material in the wall, and the perforated center position on the wall plate is the center. From the front side, a circular opening that allows only the inside of the opening of the ventilation fan fixing pedestal to face the wall surface is drilled in the wall plate, and a screw for attaching the ventilation fan is provided around the circular opening in the wall plate. By passing through the part and screwing it into the attachment part of the ventilation fan fixing pedestal, the ventilating fan is held in a form in which the wall plate is sandwiched between the front plate of the ventilation fan and the ventilation fan fixing pedestal arranged outside the wall plate. It attaches to the said ventilation fan fixed base. According to the invention of claim 9, after drilling a circular opening that can face only the opening of the ventilation fan fixing pedestal from the front side of the wall plate around the specified perforation center position on the wall plate, A ventilation fan is inserted into the back side of the wall plate from the circular opening, and the wall plate is sandwiched between the front plate of the ventilation fan and the ventilation fan fixing pedestal. The ventilation fan can be attached to the ventilation fan fixing base by screws screwed into the attachment portion.

本発明によれば、壁内に固定配設された前記換気扇固定台座の被探知部を壁表側から探知器により探知して、当該探知位置を基準にして、壁内の換気扇固定台座の開口部を壁表に臨ませるための円形開口の穿孔中心位置を特定し、壁板に前記穿孔中心位置を中心とする円穿孔を行って前記円形開口を形成する。これにより、壁板に穿孔された円形開口の中心位置と、壁内に配置された換気扇固定台座の開口部の中心位置とが一致して、壁板の壁表側に配置されて壁内の換気扇固定台座に取着された換気扇と、壁裏側から壁内に挿入された換気パイプとが、壁内の換気扇固定台座を介して支障なく接続される。また、円形開口を利用して壁表側から換気扇を壁裏側に挿入して、前記壁板の前面に配置される換気扇の前板と当該換気扇固定台座とで当該壁板を挟持する形態で、当該壁板を貫通するビスを介して当該換気扇を固定台座に取着できる。 According to the present invention, the detected portion of the ventilation fan fixing pedestal fixedly arranged in the wall is detected by the detector from the wall surface side, and the opening of the ventilation fan fixing pedestal in the wall is determined based on the detected position. The center of the circular opening of the circular opening for facing the wall surface is specified, and the circular opening is formed on the wall plate by circular drilling around the hole central position. As a result, the center position of the circular opening perforated in the wall plate coincides with the center position of the opening of the ventilation fan fixing base disposed in the wall, and the ventilation fan in the wall is disposed on the front side of the wall plate. The ventilation fan attached to the fixed base and the ventilation pipe inserted into the wall from the back side of the wall are connected without problems through the ventilation fan fixing base in the wall. Further, by inserting a ventilation fan from the front side of the wall into the back side of the wall using a circular opening, and sandwiching the wall plate between the front plate of the ventilation fan arranged on the front surface of the wall plate and the ventilation fan fixing base, The said ventilation fan can be attached to a fixed base through the screw | penetration which penetrates a wall board.

特に、換気扇固定台座に設けられた被探知部が、壁表の壁板に対する円穿孔の穿孔中心位置に配置されている場合には、壁表から行う被探知部の探知位置が、そのまま円穿孔の穿孔中心位置となるため、壁内に配置された被探知部の探知作業が一回で済むと共に、前記穿孔中心位置の探知精度も高まる利点がある。 In particular, when the detected part provided on the ventilation fan fixing pedestal is arranged at the drilling center position of the circular drilling with respect to the wall plate of the wall surface, the detection position of the detected part performed from the wall surface is the circular drilling as it is. Therefore, there is an advantage that the detection operation of the detected portion arranged in the wall is only performed once and the detection accuracy of the drilling center position is improved.

以下、複数の実施形態を挙げて本発明を更に詳細に説明する。 Hereinafter, the present invention will be described in more detail with reference to a plurality of embodiments.

図１は、壁内の柱Ｋに本発明に係る換気扇固定台座Ｓ₁が固定された状態の斜視図であり、図２は、壁内に配置された換気扇固定台座Ｓ₁の被探知部である磁石Ｍを磁気探知器Ａにより探知している状態の斜視図であり、図３は、壁内の柱Ｋに固定された換気扇固定台座Ｓ₁に対して換気扇Ｖを取着する状態を示す斜視図であり、図４は、換気扇Ｖ及び換気パイプＰの取着状態を示す断面図であり、図５は、換気扇固定台座Ｓ₁を背面側から見た斜視図であり、図６は、柱Ｋに対する換気扇固定台座Ｓ₁の固定部の部分拡大横断面図であり、図７−Ａ（イ），（ロ）及び図７−Ｂ（ハ），（ニ）は、それぞれ壁表側の壁板Ｗ₁に円穿孔により円形開口４を形成する順序を示す縦断面図である。 FIG. 1 is a perspective view of a state in which a ventilation fan fixing base S _{1 according} to the present invention is fixed to a column K in the wall, and FIG. 2 is a detected portion of the ventilation fan fixing base S ₁ arranged in the wall. FIG. 3 is a perspective view of a state in which a certain magnet M is detected by a magnetic detector A, and FIG. 3 shows a state in which a ventilation fan V is attached to a ventilation fan fixing base S ₁ fixed to a column K in the wall. FIG. 4 is a cross-sectional view showing the attached state of the ventilation fan V and the ventilation pipe P, FIG. 5 is a perspective view of the ventilation fan fixing base S ₁ as seen from the back side, and FIG. FIG. 7A is a partial enlarged cross-sectional view of the fixing portion of the ventilation fan fixing base S _{1 with} respect to the column K, and FIGS. 7-A (A), (B) and FIGS. 7-B (C), (D) are the walls on the wall front side, respectively. a plate W ₁ circularly perforation is a longitudinal sectional view showing a process of forming a circular opening 4.

図１、図５及び図７−Ａにおいて、固定台座Ｓ₁の概略形状は、略方形状をした取着板部１の周縁に背面側に向けてフランジ板部２ａ，２ｂが形成され、取着板部１の中央部に、換気パイプＰを内挿するための短円筒状のパイプ接続筒部３が背面側に向けて一体に形成されて、取着板部１の中央部に、前記パイプ接続筒部３と同心の円形開口４が開口され、４辺の各フランジ板部２ａ，２ｂのうち特定の１辺のフランジ板部２ａは、他の３辺のフランジ板部２ｂよりも幅広に形成された当接固定部となっている。当接固定部となるフランジ板部２ａの長手方向の両端部を除く部分は凹状に形成されて、幅方向に沿った多数の突条５と長手方向に沿った１本の突条６とが形成されていると共に、柱Ｋ等に当接させた際に僅かに突刺されて、後述のビスＢ₂を回転させて柱Ｋ等に固定台座Ｓ₁を固定する際に前記固定台座Ｓ₁が廻るのを防止する複数の小突刺部７ａ，７ｂが形成されている。フランジ板部２ａの凹状に形成された部分には、隣接する突条５により形成された２つのビス挿通孔８がフランジ板部２ａの長手方向に沿って所定間隔をおいて形成されている。 1, FIG. 5 and FIG. 7-A, the fixed base S _{1 has} a schematic shape in which flange plate portions 2a and 2b are formed on the periphery of the mounting plate portion 1 having a substantially square shape toward the back side. A short cylindrical pipe connection tube portion 3 for inserting the ventilation pipe P is integrally formed at the center portion of the attachment plate portion 1 toward the back side. A circular opening 4 concentric with the pipe connecting cylinder portion 3 is opened, and one of the four flange plate portions 2a and 2b has a specific flange plate portion 2a wider than the other three flange plate portions 2b. It is the contact fixing part formed in. A portion excluding both end portions in the longitudinal direction of the flange plate portion 2a serving as a contact fixing portion is formed in a concave shape, and a plurality of protrusions 5 along the width direction and one protrusion 6 along the longitudinal direction. together are formed, is pierced slightly when abutted against a pillar K or the like, said fixed base S ₁ when fixing the fixing base S ₁ bis B ₂ to be rotated by column K and the like described later A plurality of small piercing portions 7a and 7b for preventing the rotation are formed. Two screw insertion holes 8 formed by the adjacent protrusions 5 are formed at a predetermined interval in the longitudinal direction of the flange plate portion 2a in the concave portion of the flange plate portion 2a.

また、取着板部１における前記フランジ板部２ａに近接した部分には、前記各ビス挿通孔８に挿通されたビスＢ₁を回転させるドライバー１４（図６参照）を壁表側から挿通させる２つのドライバー挿通孔１１が、円形開口４の中心を通り、かつフランジ板部２ａに直交する横中心線Ｃ₁に対して対称位置にフランジ板部２ａと直交して形成されている。このように、前記横中心線Ｃ₁の位置を回避してドライバー挿通孔１１を形成したのは、以下の理由による。即ち、固定台座Ｓ₁に固定される換気扇Ｖの前板５１には、その横中心線上にビス挿通孔が形成されているものがあり、この種の換気扇Ｖに対応して、固定台座Ｓ₁の取着板部１の前記横中心線Ｃ₁の部分には、ビス螺入下孔Ｅを形成しておく必要があるためである。 Further, in a portion close to the flange plate section 2a of the attachment plate portion 1, inserting the screws B ₁ wherein is inserted into the screw insertion holes 8 a driver 14 to rotate (see FIG. 6) from the wall front 2 One of the driver insertion hole 11 is formed orthogonally to the flange plate portion 2a at symmetrical positions with respect to the transverse center line C ₁ that passes through the center of the circular opening 4, and perpendicular to the flange plate section 2a. The reason why the driver insertion hole 11 is formed while avoiding the position of the horizontal center line C ₁ is as follows. That is, the front plate 51 of the ventilation fan V fixed to the fixed base S ₁ has a screw insertion hole formed on the horizontal center line thereof, and the fixed base S ₁ corresponds to this type of ventilation fan V. This is because it is necessary to form a screw threaded pilot hole E in the portion of the horizontal center line C ₁ of the mounting plate portion 1.

固定台座Ｓ₁の取着板部１には、換気扇Ｖの前板５１を固定するビスＢ₂を螺入させるための無数のビス螺入下孔Ｅが形成されている。換気扇Ｖの前板５１に形成されているビス挿通孔の位置は、メーカー毎に、或いは同一メーカーでも機種毎に異なっていて様々であるのに対応して、前記ビス挿通孔の位置を調査して、殆ど全ての換気扇Ｖの固定が可能なように最小公倍数的な観点から、取着板部１に形成するビス螺入下孔Ｅの位置を定めてある。即ち、取着板部１には、多数のビス螺入下孔Ｅが密集して形成されて一群となった複数群（実施例では８群）のビス螺入下孔群Ｅ₀が散在して形成されている。即ち、取着板部１における縦横の各中心線Ｃ₁，Ｃ₂と交叉する部分、及び取着板部１における各対角線方向と交叉する各コーナー部には、ビス螺入下孔群Ｅ₀がそれぞれ形成されている。各ビス螺入下孔群Ｅ₀には、多数のビス螺入下孔Ｅが縦横に並んだ状態で、縦横両方向に同一ピッチで密集して形成されている。図４に示されるように、取着板部１におけるビス螺入下孔群Ｅ₀が形成されている部分は、ビス螺入下孔群Ｅ₀が形成されていない一般部よりも遥かに厚肉に形成された厚肉部１ａとなっている。ビス螺入下孔Ｅは、非貫通孔であって、取着面である前面に開口されたテーパー状の第１下孔Ｅ₁と、背面に開口された同一内径の第２下孔Ｅ₂とが、同一軸線上で非連続に形成されたものである。なお、図１及び図５において、１２は、隣接するビス螺入下孔群Ｅ₀の間に形成された透孔を示し、１３は、換気扇Ｖのケーブルを挿通させるために、円形開口４の周縁に形成された複数のケーブル挿通孔を示す。 The mounting plate portion 1 of the fixed base S ₁ is formed with innumerable screw screw lower holes E for screwing screws B ₂ for fixing the front plate 51 of the ventilation fan V. The position of the screw insertion hole formed in the front plate 51 of the ventilation fan V is different for each manufacturer or for each model even for the same manufacturer, and the position of the screw insertion hole is investigated. Thus, from the viewpoint of the least common multiple so that almost all of the ventilation fans V can be fixed, the position of the screw threaded lower hole E formed in the attachment plate portion 1 is determined. That is, a plurality of screw screw lower hole groups E ₀ (in the embodiment, eight groups), which are formed as a group by densely forming a large number of screw screw lower holes E, are scattered in the mounting plate portion 1. Is formed. That is, a screw threaded pilot hole group E ₀ is provided at a portion that intersects the vertical and horizontal center lines C ₁ and C _{2 in the} mounting plate portion 1 and each corner portion that intersects each diagonal direction in the mounting plate portion 1. Are formed respectively. Each screw threaded lower hole group E ₀ is formed densely at the same pitch in both the vertical and horizontal directions in a state where a large number of screw threaded lower holes E are arranged vertically and horizontally. As shown in FIG. 4, the portion where the screw threaded lower hole group E ₀ is formed in the mounting plate 1 is much thicker than the general part where the screw threaded lower hole group E ₀ is not formed. It is the thick part 1a formed in the meat. The screw threaded lower hole E is a non-through hole, and has a tapered first lower hole E ₁ opened on the front surface which is the attachment surface and a second lower hole E ₂ having the same inner diameter opened on the rear surface. Are formed discontinuously on the same axis. In FIGS. 1 and 5, reference numeral 12 denotes a through hole formed between adjacent screw threaded lower hole groups E ₀ , and 13 denotes a circular opening 4 for inserting the cable of the ventilation fan V. The some cable penetration hole formed in the periphery is shown.

また、図１及び図７−Ａに示されるように、パイプ接続筒部３は、背面側の内径が僅かに小さくなるように途中に段差部３ａが形成され、当該段差部３ａに架設棒２１が円形開口４の半径方向に沿って一体に形成され、前記架設棒２１の長手方向の中央部には、前面の取着板部１の側に向けて円筒状をした磁石保持筒部２２が、円形開口４の中心位置Ｃ₀と自身の中心位置を合致させて一体に形成されている。即ち、架設棒２１は、円形開口４の壁表側の面（取着板部１の取着面１ｂの延長面）から背面側に後退した位置に配置されているため、壁表側の壁板Ｗ₁に円形開口Ｈ₁を形成するための円穿孔の際に、ホールソーＦ₁,Ｆ₂の穿孔刃４２と干渉しない。図７−Ａ及び図８に示されるように、磁石保持筒部２２の先端面２２ａは、取着板部１の前面とほぼ同一面になっていると共に、先端の開口は、センタードリル４１が進入可能な進入口２２ｂとなっており、磁石保持筒部２２の背面側に近い部分には、中央部に円形開口２３ａが形成された底板部２３が設けられている。また、磁石保持筒部２２の内周面には、周方向に沿って等間隔をおいて複数の突条２４が形成されて、先端の開口から磁石Ｍが圧入状態で挿入されることにより、磁石保持筒部２２に対する磁石Ｍの保持力を高めている。磁石保持筒部２２には、複数個の磁石Ｍが挿入可能な高さ（深さ）を有していて、磁石Ｍの使用個数が１個の場合には、後述の壁板Ｗ₁の壁表側から探知され易いように、磁石保持筒部２２の最先端の部分に圧入配置して、圧入配置された磁石Ｍの背面側に当該磁石Ｍの後退空間２７を確保しておく。また、発生磁力を高めるために磁石Ｍを複数個使用する場合には、最後に圧入する磁石Ｍが磁石保持筒部２２の先端面２２ａとほぼ同一面になるようにして、複数個の磁石Ｍを順次圧入すればよい。 Further, as shown in FIGS. 1 and 7-A, the pipe connecting tube portion 3 is formed with a step portion 3a in the middle so that the inner diameter on the back side is slightly reduced, and the installation rod 21 is provided on the step portion 3a. Are integrally formed along the radial direction of the circular opening 4, and a magnet holding cylinder portion 22 having a cylindrical shape toward the attachment plate portion 1 on the front surface is provided at the center in the longitudinal direction of the installation rod 21. The center position C ₀ of the circular opening 4 and the center position of the circular opening 4 are made to coincide with each other. That is, the construction bar 21 is disposed at a position retracted from the surface on the wall surface side of the circular opening 4 (the extended surface of the attachment surface 1b of the attachment plate portion 1) to the back surface side. _In the circular drilling for forming the circular opening H ₁ in ₁ , there is no interference with the drilling blades 42 of the hole saws F ₁ and F ₂ . As shown in FIGS. 7A and 8, the front end surface 22 a of the magnet holding cylinder portion 22 is substantially flush with the front surface of the mounting plate portion 1, and the center drill 41 has an opening at the front end. A bottom plate 23 having a circular opening 23a in the center is provided at a portion near the back side of the magnet holding cylinder 22 which is an entrance 22b that can enter. Further, a plurality of ridges 24 are formed at equal intervals along the circumferential direction on the inner peripheral surface of the magnet holding cylinder portion 22, and the magnet M is inserted in a press-fit state from the opening at the tip, The holding force of the magnet M with respect to the magnet holding cylinder part 22 is increased. The magnet holding cylinder portion 22 has a height (depth) into which a plurality of magnets M can be inserted, and when the number of magnets M used is one, the wall of a wall plate W _{1 to be} described later In order to be easily detected from the front side, the magnet holding cylinder portion 22 is press-fitted and arranged at the foremost part, and a retreat space 27 of the magnet M is secured on the back side of the press-fitted magnet M. Further, when a plurality of magnets M are used to increase the generated magnetic force, the plurality of magnets M are arranged such that the last magnet M to be press-fitted is substantially flush with the front end surface 22a of the magnet holding cylinder portion 22. May be sequentially press-fitted.

架設棒２１は、壁表側から壁内に配置された換気扇固定台座Ｓ₁の前記磁石Ｍを探知して、円形開口の中心位置Ｃ₀が特定された後には換気扇Ｖを取付ける際の障害となるため、折り取る必要がある。このため、架設棒２１の両端部の両側面には、折取りを容易にするための折取り溝２５が形成されている。また、架設棒２１の中央の磁石保持筒部２２の両側には、固定台座Ｓ₁を柱Ｋに固定するビスＢ₁を仮保持しておくための一対一組の仮保持板部２６が前面側に向けて形成されている。 The installation rod 21 becomes an obstacle when the ventilation fan V is attached after the center position C ₀ of the circular opening is specified by detecting the magnet M of the ventilation fan fixing base S ₁ arranged in the wall from the front side of the wall. Therefore, it is necessary to break off. For this reason, breakage grooves 25 for facilitating breakage are formed on both side surfaces of both ends of the construction bar 21. Further, a pair of temporary holding plate portions 26 for temporarily holding screws B ₁ for fixing the fixing base S ₁ to the column K are provided on both sides of the magnet holding cylinder portion 22 in the center of the installation rod 21. It is formed toward the side.

次に、上記構成の固定台座Ｓ₁を壁内の柱Ｋに固定し、当該固定台座Ｓ₁の壁表側に立設された壁板Ｗ₁に、固定台座Ｓ₁の円形開口４の中心位置Ｃ₀と同心の円形開口Ｈ₁を円穿孔した後に、換気扇Ｖを固定する作業について説明する。固定台座Ｓ₁は、二重壁Ｗの空間部６１（図７−Ａ参照）に配設されて、図１に示されるように、二重壁Ｗを構成する壁裏側の壁板Ｗ₂を柱Ｋに当接させて立設しておいて、壁板Ｗ₂における換気扇Ｖの固定予定位置に、換気パイプＰが挿入される円形開口Ｈ₂を円穿孔しておく。次に、柱Ｋの側面Ｋａに固定台座Ｓ₁の当接固定部であるフランジ板部２ａを当接させて押圧すると、当該フランジ板部２ａの外側に形成された小突刺部７ａ，７ｂが柱Ｋに突刺される。ここで、固定台座Ｓ₁の取着板部１の取着面１ｂは、柱Ｋの別の側面Ｋｂよりも僅かに後退した位置に配置される。次に、固定台座Ｓ₁の取着板部１に形成された各ドライバー挿通孔１１を通してビスＢ₁を、フランジ板部２ａに形成されたビス挿通孔８に挿通し、この状態で前記ドライバー挿通孔１１に挿通したドライバー１４によりビスＢ₁を回転させると（図６参照）、小突刺部７ａ，７ｂが柱Ｋの側面Ｋａに突刺されているため、ビスＢ₁の回転により固定台座Ｓ₁が廻されることなく、２本のビスＢ₁によって柱Ｋに対して固定台座Ｓ₁が固定される。なお、壁裏側の壁板Ｗ₂に円形開口Ｈ₂を円穿孔するには、壁表側の壁板Ｗ₁の立設前に行う方法と、立設後に行う方法とがあるが、本実施例は前者の方法であって、柱Ｋに対する固定台座Ｓ₁の固定位置は予め判明しているので、固定台座Ｓ₁の固定予定位置から、壁板Ｗ₂に形成する円形開口Ｈ₂の中心位置（柱Ｋに固定される固定台座Ｓ₁の円形開口４の中心位置Ｃ₀と合致している）を特定することは可能である。 Next, the fixing base S ₁ of the above configuration is fixed to the pillar K in the wall, to the fixed base S wallboard W ₁ erected on the wall surface side of the _1, the center position of the circular opening 4 of the fixing base S ₁ An operation of fixing the ventilation fan V after circularly drilling the circular opening H ₁ concentric with C ₀ will be described. The fixed base S ₁ is disposed in the space portion 61 (see FIG. 7A) of the double wall W, and the wall plate W ₂ on the back side of the wall constituting the double wall W as shown in FIG. A circular opening H ₂ into which the ventilation pipe P is inserted is circularly perforated at a position where the ventilation fan V is to be fixed on the wall plate W ₂ . Next, when pressed by abutting the flange plate portion 2a is abutting the fixed portion of the fixed side Ka pedestal S ₁ of the pillars K, the small piercing portion 7a formed on the outside of the flange plate portions 2a, 7b is It is inserted into the pillar K. Here, attachment surface 1b of the attachment plate portion 1 of the fixing base S ₁ is arranged at a position slightly back from another aspect Kb pillar K. Next, the bis B ₁ through a fixed seat S ₁ of the attachment plate portion each driver insertion hole 11 formed in 1, inserted into the screw insertion hole 8 formed in the flange plate section 2a, the driver inserted in this state When the driver 14 inserted through the hole 11 to rotate the screws B ₁ (see FIG. 6), since the small piercing parts 7a, 7b are pierced in the side surface Ka of the column K, fixed base S ₁ by the rotation of the screw B ₁ The fixed base S ₁ is fixed to the column K by the two screws B ₁ without rotating. In order to circularly perforate the circular opening H ₂ in the wall plate W ₂ on the back wall side, there are a method performed before the wall plate W ₁ on the wall front side is erected and a method performed after the wall plate W ₁ is erected. Is the former method, and since the fixing position of the fixed base S ₁ with respect to the column K is known in advance, the center position of the circular opening H ₂ formed in the wall plate W ₂ from the predetermined fixing position of the fixed base S _1. It is possible to specify (matches the center position C ₀ of the circular opening 4 of the fixed base S ₁ fixed to the column K).

次に、図２及び図７−Ａ（イ）に示されるように、壁表側に壁板Ｗ₁を立設した後に、磁気探知器Ａを使用して壁表から、壁内に配設された固定台座Ｓ₁の磁石Ｍの位置を探知すると、当該探知位置は壁板Ｗ₁に形成予定の円形開口Ｈ₁の中心位置Ｃ₁₁となり、壁板Ｗ₁に当該中心位置Ｃ₁₁を罫書いておく。 Next, as shown in FIG. 2 and FIG. 7-A (A), after the wall plate W ₁ is erected on the wall surface side, the magnetic detector A is used to arrange the wall plate from the wall surface into the wall. and when detecting the position of the magnet M of the fixing base S _1, the detection position is scribed the center position C _11, and the wall plate W the center position C ₁₁ to ₁ of the circular opening H ₁ to be formed in the wall plate W ₁ Keep it.

次に、穿孔具を使用して、前記中心位置Ｃ₁₁を基準にして壁板Ｗ₁に円形開口Ｈ₁を円穿孔する。穿孔具であるホールソーＦ₁は、センタードリル４１と、当該センタードリル４１の回りを回転して円穿孔が可能な穿孔刃４２とを備えており、穿孔の進行に応じて、穿孔刃４２とセンター軸４１’とが一体となって移動する形式のものと、センター軸４１’に対して穿孔刃４２が相対的に移動する形式のものとがあり、いずれの形式のものであってもよい。図７−Ａ及び図７−Ｂに示されるホールソーＦ₁は前者の形式であって、後者の形式のホールソーＦ₂（図１０参照）のセンター軸４１’は、ドリル機能を有しておらず、壁板Ｗ₁にセンター軸４１’が当接した時点で前進を停止して、穿孔刃４２のみがセンター軸４１’に対して前進して円穿孔する構成である。なお、図７−Ａ及び図７−Ｂにおいて、４３は、穿孔時の切粉の飛散を防止するカバーを示す。 Next, using a punch, a circular opening H ₁ is circularly drilled in the wall plate W ₁ with reference to the center position C ₁₁ . Hole saw F ₁ is a piercer includes a center drill 41, and rotates around the said center drill 41 comprises a cutting head 42 capable circular perforations, depending on the progress of the drilling, the cutting head 42 and the center There are a type in which the shaft 41 ′ moves together and a type in which the drilling blade 42 moves relative to the center shaft 41 ′, and any type may be used. The hole saw F ₁ shown in FIGS. 7-A and 7-B is the former type, and the center shaft 41 ′ of the latter type of hole saw F ₂ (see FIG. 10) does not have a drill function. When the center shaft 41 ′ comes into contact with the wall plate W ₁ , the forward movement is stopped, and only the drilling blade 42 moves forward with respect to the center shaft 41 ′ and performs circular piercing. In FIGS. 7A and 7B, reference numeral 43 denotes a cover that prevents chips from being scattered during drilling.

図７−Ａ（ロ）及び図７−Ｂ（ハ）に示されるように、壁板Ｗ₁に罫書かれた円穿孔の中心位置Ｃ₁₁にホールソーＦ₁のセンタードリル４１を当てがって、そのままホールソーＦ₁を壁板Ｗ₁に対して強く押し付けると、最初にセンタードリル４１により壁板Ｗ₁に中心孔Ｈ₃が明けられ、次に穿孔刃４２により壁板Ｗ₁に円穿孔が行われる。穿孔刃４２による円穿孔を終了した時点（穿孔刃４２が壁板Ｗ₁の裏面に達した時点）では、センタードリル４１は、磁石保持筒部２２の進入口２２ｂから内部に進入して、磁石保持筒部２２内に保持された磁石Ｍを押圧する結果、当該磁石Ｍは後退空間２７の側にスライドさせられる。これにより、二重壁Ｗ内に固定配置された固定台座Ｓ₁の円形開口４の中心位置Ｃ₀と同心の円形開口Ｈ₁が壁板Ｗ₁に形成される。また、円形開口４の内部に架設された架設棒２１は、固定台座Ｓ₁の取着面１ｂから背面側に後退した位置に配置されているため、穿孔終了時において穿孔刃４２により折損されることがないと共に、固定台座Ｓ₁の取着面１ｂは、柱Ｋの側面Ｋｂから僅かの長さＤ〔図７−Ａ（イ）参照〕だけ後退した位置に配置されているため、穿孔終了時において穿孔刃４２により固定台座Ｓ₁における円形開口４の周縁部が折損されることもない。なお、固定台座Ｓ₁の取着面１ｂは、柱Ｋの側面Ｋｂとほぼ同一面にして配置することも可能であり、この場合においても、上記理由により穿孔刃４２により架設棒２１が折損されることはない。 As shown in FIG. 7-A (B) and FIG. 7-B (C), the center drill 41 of the hole saw F ₁ is applied to the center position C ₁₁ of the circular perforation marked on the wall plate W ₁ . Continuing strongly pressed against the hole saw F ₁ relative to the wall plate W _1, initially the drilled central hole H ₃ in the wall plate W ₁ by the center drill 41, then the wall plate W ₁ circularly perforation line by punching blade 42 Is called. At the time when circular drilling by the drilling blade 42 is finished (when the drilling blade 42 reaches the back surface of the wall plate W ₁ ), the center drill 41 enters the inside through the entrance 22 b of the magnet holding cylinder portion 22, and the magnet As a result of pressing the magnet M held in the holding cylinder portion 22, the magnet M is slid toward the retreat space 27. Thereby, a circular opening H ₁ concentric with the center position C ₀ of the circular opening 4 of the fixed base S ₁ fixedly arranged in the double wall W is formed in the wall plate W ₁ . Moreover, erection rod 21 which is laid inside the circular opening 4, since it is arranged in a position retracted to the rear side from the fixed base S ₁ of an attachment surface 1b, is broken by the cutting head 42 during drilling completion with never, attachment surface 1b of the fixing base S _1, because they are located at a position retracted slightly the length D from the side surface Kb pillars K [see FIG. 7-a (b)], the end perforation In some cases, the peripheral edge of the circular opening 4 in the fixed base S ₁ is not broken by the perforating blade 42. Incidentally, attachment surface 1b of the fixing base S ₁ is, it is also possible to disposed substantially flush with the side surfaces Kb pillar K, in this case, erection rod 21 is broken by the cutting head 42 for the aforementioned reason Never happen.

固定台座Ｓ₁の円形開口４の部分に、被探知部である磁石Ｍを備えた架設棒２１が配設されたままであると、後に行う換気扇Ｖの取付けが行えないので、架設棒２１は、両端の折取り溝２５の部分で折り取る〔図７−Ｂ（ニ）参照〕。また、折り取られた架設棒２１の中央部の磁石保持筒部２２内において底板部２３に近い部分まで達して残存している磁石Ｍは、図９に示されるように、底板部２３の背面側から円形開口２３ａに押し棒２８を挿入して、磁石保持筒部２２の先端開口から外部に押し出すことにより、再利用が可能となる。なお、架設棒２１を両端部の折取り溝２５の部分で折り取って、パイプ接続筒部３の側に残った部分２１ａは、換気パイプＰの先端面が当接するストッパーとして機能する。 If the erection rod 21 provided with the magnet M, which is the detected portion, is still disposed in the circular opening 4 of the fixed base S _1, the ventilation fan V to be mounted later cannot be attached. It breaks off at the portions of the breakage grooves 25 at both ends [see FIG. 7-B (d)]. Further, the magnet M remaining up to a portion close to the bottom plate portion 23 in the magnet holding cylinder portion 22 at the center of the broken construction bar 21 is the back surface of the bottom plate portion 23 as shown in FIG. The push rod 28 is inserted into the circular opening 23a from the side and pushed out from the tip opening of the magnet holding cylinder portion 22 to enable reuse. Note that the portion 21a remaining on the pipe connecting tube portion 3 side after the installation rod 21 is broken at the portions of the breakage grooves 25 at both ends functions as a stopper with which the tip end surface of the ventilation pipe P abuts.

図３及び図４に示されるように、換気扇Ｖは、方形状をした前板５１の背面側にパイプ接続筒部５２が一体に取付けられ、前記前板５１の円形開口５１ａに臨んで前記パイプ接続筒部５２内に配置された回転羽根５３がモータ５４により回転される構成である。この換気扇Ｖは、前板５１が壁板Ｗ₁の表側に密着した状態で、当該前板５１の縦中心線上に配置された上下一対のビス挿通孔５５に挿通された一対のビスＢ₂を介して二重壁Ｗ内に配置された固定台座Ｓ₁に固定される。即ち、ビスＢ₂は壁板Ｗ₁を貫通して二重壁Ｗ内に固定配置された固定台座Ｓ₁のビス螺入下孔Ｅに螺入される。前板５１はカバー５６で覆われる。なお、前板本体に形成されるビス挿通孔は、換気扇の種類によって種々異なり、前板本体の横中心線上に一対が配置されたもの、或いは対角線方向に沿った一又は二対が配置されたもの等がある。 As shown in FIGS. 3 and 4, ventilating fan V is the pipe connecting cylindrical portion 52 on the rear side of the front plate 51 in which the rectangular shape is integrally attached to the pipe facing the circular aperture 51a of the front plate 51 A rotating blade 53 disposed in the connecting tube portion 52 is rotated by a motor 54. The ventilation fan V, in a state where the front plate 51 is in close contact with the front side wall plate W _1, a pair of screws B ₂ inserted through the longitudinal center located on a line a pair of upper and lower screw insertion hole 55 of the front plate 51 It is fixed to the fixing base S ₁ disposed within the double wall W through. That is, the screw B ₂ passes through the wall plate W ₁ and is screwed into the screw screwing lower hole E of the fixed base S ₁ fixedly disposed in the double wall W. The front plate 51 is covered with a cover 56. In addition, the screw insertion hole formed in the front plate main body varies depending on the type of the ventilation fan, and a pair is arranged on the horizontal center line of the front plate main body, or one or two pairs along the diagonal direction are arranged. There are things.

一方、壁裏側においては、壁板Ｗ₂に形成された円形開口Ｈ₂から換気パイプＰが二重壁Ｗ内に挿入されて、当該換気パイプＰの先端部は、固定台座Ｓ₁のパイプ接続筒部３内に挿入される。これにより、壁表側の換気扇Ｖと壁裏側の換気扇Ｖとは、二重壁Ｗ内に固定配設された換気扇固定台座Ｓ₁を介して接続される。なお、壁表側の壁板Ｗ₁の立設前に壁裏側の壁板Ｗ₂に円形開口Ｈ₂を形成する本施工例では、固定台座Ｓ₁のパイプ接続筒部３に対する換気パイプＰの接続は、壁表側の壁板Ｗ₁を立設させる前に行うことも可能である。 On the other hand, in the wall back, is inserted from a circular opening H ₂ in the wall plate W ₂ to the ventilation pipe P is within the double wall W, the tip portion of the ventilation pipe P is pipe connection of the fixing base S ₁ It is inserted into the tube part 3. Accordingly, the ventilation fan V on the front side of the wall and the ventilation fan V on the back side of the wall are connected via the ventilation fan fixing base S ₁ fixedly disposed in the double wall W. In this construction example in which the circular opening H ₂ is formed in the wall plate W ₂ on the back side before the wall plate W _{1 on} the front side of the wall is erected, the connection of the ventilation pipe P to the pipe connection tube portion 3 of the fixed base S ₁ is performed. It can also be carried out prior to upright wall plate W ₁ of the wall front.

また、図１０に示されるように、穿孔の進行に伴って、センター軸４１’に対して穿孔刃４２が相対的に移動するホールソーＦ₂を使用する場合には、センター軸４１’は壁板Ｗ₁に当接されたままであるので、磁石保持筒部２２に複数個の磁石Ｍを積層状態で圧入することにより、全体磁力を高めることができて、磁気探知器Ａにより壁表側から行う磁石Ｍの位置の探知が容易となり、しかも探知精度を高めることができる。 As shown in FIG. 10, when the hole saw F _{2 in} which the drilling blade 42 moves relative to the center shaft 41 ′ as the drilling progresses, the center shaft 41 ′ is a wall plate. Since it remains in contact with W ₁ , it is possible to increase the overall magnetic force by press-fitting a plurality of magnets M into the magnet holding cylinder portion 22 in a laminated state, and a magnet that is detected from the front side of the wall by the magnetic detector A. The position of M can be easily detected, and the detection accuracy can be increased.

実施例１では、固定台座Ｓ₁の磁石保持筒部２２に１ないし複数の磁石Ｍを圧入して、当該磁石Ｍが壁板Ｗ₁の外側から探知される被探知部となっているが、図１１に示されるように、磁石保持筒部２２の先端面２２ａにセンタードリル４１により突き破ることができ、しかも磁気探知又は金属探知が可能な被探知薄板材３１を貼り付けておき、当該薄板材３１を被探知部とすることもできる。被探知薄板材３１としては、金属箔、磁石薄片等が挙げられる。壁板Ｗ₁に円形開口Ｈ₁を円穿孔する際に、ホールソーＦ₁のセンタードリル４１が壁板Ｗ₁を貫通した後に、当該センタードリル４１は、被探知薄板材３１を突き破って、磁石保持筒部２２の内部に進入するため、センタードリル４１が穿孔刃４２と一体となって移動する形式のホールソーＦ₁によって壁板Ｗ₁に円形開口Ｈ₁を支障なく形成できる。 In the first embodiment, one or more magnets M are press-fitted into the magnet holding cylinder portion 22 of the fixed base S ₁ , and the magnet M is a detected portion that is detected from the outside of the wall plate W ₁ . As shown in FIG. 11, a to-be-detected thin plate material 31 that can be pierced by a center drill 41 and capable of magnetic detection or metal detection is attached to the tip surface 22a of the magnet holding cylinder portion 22, and the thin plate material. 31 can also be used as a detected part. Examples of the to-be-detected thin plate material 31 include metal foil and magnet flakes. When circular perforated circular opening H ₁ to the wall plate W _1, after the center drill 41 of hole saw F ₁ is passed through the wall plate W _1, the center drill 41, breaks through the object to be detected thin plate 31, magnet holding to enter the interior of the tubular portion 22, a circular opening H ₁ can without hindrance the wall plate W ₁ by a hole saw F ₁ form the center drill 41 is moved together with the cutting head 42.

図１２（イ）は、本発明に係る別の換気扇固定台座Ｓ₂の正面図であり、同（ロ）は、同（イ）のＸ−Ｘ線拡大断面図である。前記固定台座Ｓ₁は、円形開口４の中心位置Ｃ₀に被探知部である磁石Ｍが配置されるようにして、当該円形開口４内に磁石Ｍを備えた架設棒２１を折取り可能に架設されたものであって、壁板Ｗ₁の外側からの探知位置が、そのまま壁板Ｗ₁に円形開口Ｈ₁を形成するための円穿孔の中心位置となる利点があるが、本発明においては、結果的に壁板Ｗ₁の外側から壁板Ｗ₁に円形開口Ｈ₁を形成するための円穿孔の中心位置が探知可能な構成になっておれば、固定台座に設けられる被探知部の配置はいかなる態様であってもよい。固定台座Ｓ₂においては、円形開口４の中心位置Ｃ₀を通る縦中心線Ｃ₂と非平行な直線上であって、しかも取着板部１における前記中心位置Ｃ₀から等距離（Ｌ）であるビス螺入下孔群Ｅ₀の間の位置に一対の磁石Ｍが配置された例である。換言すると、一対の磁石Ｍの中心位置を結ぶ線分の中心が、固定台座Ｓ₂の円形開口４の中心位置Ｃ₀となっている。一対の磁石Ｍは、いずれも取着板部１の取着面１ｂから突出しないようにして、当該取着板部１の背面側に向けて形成された各磁石埋設孔９に埋設されている。 Figure 12 (b) is a front view of another exhaust fan fixing base S ₂ according to the present invention, the (b) is a line X-X enlarged sectional view of the (a). The fixed pedestal S ₁ is configured such that a magnet M as a detected portion is arranged at the center position C ₀ of the circular opening 4 so that the installation rod 21 provided with the magnet M can be broken in the circular opening 4. be those laid been, detected position from the outer wall plate W ₁ is, although there is an advantage that the center position of the circular perforations for directly forming a circular opening H ₁ to the wall plate W _1, in the present invention , if I have consequently center position of the circular perforations to form a circular opening H ₁ from the outside of the wall plate W ₁ to the wall plate W ₁ becomes detection configurable, to be detected portions provided on the fixed base The arrangement of may be in any form. In the fixed base S _2, it is on a straight line that is not parallel to the longitudinal center line C ₂ passing through the center position C ₀ of the circular opening 4 and is equidistant (L) from the center position C ₀ in the mounting plate 1. it is an example in which a pair of magnets M are arranged in a position between the screw threaded into the lower hole group E ₀ is. In other words, the center of the line segment connecting the center positions of the pair of magnets M is the center position C ₀ of the circular opening 4 of the fixed base S ₂ . The pair of magnets M is embedded in each magnet embedding hole 9 formed toward the back side of the mounting plate portion 1 so as not to protrude from the mounting surface 1 b of the mounting plate portion 1. .

このため、壁板Ｗ₁の外側から二重壁Ｗ内の固定台座Ｓ₂に設けられた２つの磁石Ｍの各位置を探知すると、２つの探知位置を結ぶ線分の中点が、壁板Ｗ₁に円形開口４を形成するための円穿孔の中心位置となり、当該中心位置を中心にして壁板Ｗ₁に円穿孔を行えばよい。なお、固定台座Ｓ₂の場合には、取着板部１の磁石埋設孔９に埋設された各磁石Ｍは、そのまま放置すればよい。 For this reason, when the positions of the two magnets M provided on the fixed base S ₂ in the double wall W are detected from the outside of the wall plate W ₁ , the midpoint of the line segment connecting the two detection positions is the wall plate. The center position of the circular perforation for forming the circular opening 4 in W ₁ is the center position, and the circular perforation may be performed in the wall plate W ₁ around the center position. In the case of the fixed base S ₂ , each magnet M embedded in the magnet embedding hole 9 of the mounting plate portion 1 may be left as it is.

また、本発明に係る固定台座は、上記実施例のように、壁内に設置された柱に固定される場合の他に、換気扇の設置位置によっては、壁内の胴縁に固定される場合もある。 In addition to the case where the fixed base according to the present invention is fixed to the pillar installed in the wall as in the above embodiment, depending on the installation position of the ventilation fan, the fixed base is fixed to the trunk edge in the wall. There is also.

壁内の柱Ｋに本発明に係る換気扇固定台座Ｓ₁が固定された状態の斜視図である。Ventilator fixing base S ₁ according to the present invention a pillar K in the wall is a perspective view of a state of being fixed. 壁内に配置された換気扇固定台座Ｓ₁の被探知部である磁石Ｍを磁気探知器Ａにより探知している状態の斜視図である。It is a perspective view of a state where the detecting magnet M is to be detected portion of the deployed ventilators fixed base S ₁ in the wall by the magnetic detector A. 壁内の柱Ｋに固定された換気扇固定台座Ｓ₁に対して換気扇Ｖを取着する状態を示す斜視図である。It is a perspective view showing a state of attaching the ventilating fan V against ventilators fixing base S ₁ which is fixed to the pillar K in the wall. 換気扇Ｖ及び換気パイプＰの取着状態を示す断面図である。It is sectional drawing which shows the attachment state of the ventilation fan V and the ventilation pipe P. FIG. 換気扇固定台座Ｓ₁を背面側から見た斜視図である。The exhaust fan fixing base S ₁ is a perspective view from the rear side. 柱Ｋに対する換気扇固定台座Ｓ₁の固定部の部分拡大横断面図である。Is a partially enlarged cross-sectional view of the fixing portion of the exhaust fan fixing base S ₁ for column K. （イ），（ロ）は、それぞれ壁表側の壁板Ｗ₁に円形開口４を形成するための円穿孔の中心位置Ｃ₁₁を探知している状態、及び穿孔開示状態の縦断面図である。(B) is a longitudinal sectional view of (b) shows a state where the wallboard W ₁ of the wall surface side respectively have detected the center position C ₁₁ circular perforations to form a circular opening 4, and drilling disclosure states . （ハ），（ニ）は、それぞれ穿孔終了状態、及び架設棒２１を折り取って壁内から抜き去る状態の縦断面図である。(C) and (D) are longitudinal sectional views of a state in which the drilling is completed and a state in which the erection bar 21 is broken and removed from the wall. （イ），（ロ）は、架設棒２１の磁石保持筒部２２の先端開口からセンタードリル４１が進入して磁石Ｍが後退させられている状態を示す断面図、及び一部破断斜視図である。(A) and (B) are a cross-sectional view and a partially broken perspective view showing a state in which the center drill 41 enters from the tip opening of the magnet holding cylinder portion 22 of the installation rod 21 and the magnet M is retracted. is there. 折り取った架設棒２１の磁石保持筒部２２内に押し込まれた磁石Ｍを押し出している状態の断面図である。It is sectional drawing of the state which has pushed out the magnet M pushed in in the magnet holding | maintenance cylinder part 22 of the broken construction stick | rod 21. FIG. センター軸４１’に対して穿孔刃４２が相対的に移動するホールソーＦ₂を使用して、壁板Ｗ₁に円形開口Ｈ₁を形成する状態の断面図である。Use a hole saw F ₂ of the cutting head 42 relative to the center axis 41 'is relatively moved, a cross-sectional view of a state forming a circular opening H ₁ to the wall plate W _1. （イ），（ロ）は、架設棒２１の磁石保持筒部２２の先端面２２ａに貼り付けられた被探知薄板材３１がセンタードリル４１により突き破られている状態を示す断面図、及び一部破断斜視図である。(A) and (b) are cross-sectional views showing a state in which the thin plate material 31 to be detected attached to the tip surface 22a of the magnet holding cylinder portion 22 of the installation rod 21 is pierced by the center drill 41; FIG. （イ）は、本発明に係る別の換気扇固定台座Ｓ₂の正面図であり、（ロ）は、（イ）のＸ−Ｘ線拡大断面図である。(B) is a front view of another exhaust fan fixing base S ₂ according to the present invention, (b) is a line X-X enlarged sectional view of (b).

Ａ：磁気探知器（探知器）
Ｃ₀：換気扇固定台座の円形開口の中心位置
Ｃ₁₁：壁板に円形開口を形成するための円穿孔の中心位置
Ｅ：ビス螺入下孔
Ｆ₁,Ｆ₂：ホールソー（穿孔具）
Ｈ₁：壁表側の壁板の円形開口
Ｋ：柱（造営材）
Ｍ：磁石（被探知部）
Ｐ：換気パイプ
Ｓ₁,Ｓ₂：換気扇固定台座
Ｖ：換気扇
Ｗ：二重壁
Ｗ₁：壁表側の壁板
１：取着板部（取着部）
１ｂ：取着面
２ａ：フランジ板部（固定部）
３：パイプ接続筒部（換気パイプ接続部）
４：固定台座の円形開口（開口部）
２１：架設棒（架設部）
２２：磁石保持筒部（立設部）
２２ｂ：進入口
２４：突条
２７：後退空間
３１：被探知薄板材
４１：ホールソーのセンタードリル
４１’：ホールソーのセンター軸
５１：換気扇の前板 A: Magnetic detector (detector)
C ₀ : Center position of the circular opening of the ventilation fan fixing base
C ₁₁ : Center position of circular perforation for forming a circular opening in the wall plate
E: Screw threaded pilot hole
F ₁ and F ₂ : Hole saw
H ₁ : Circular opening of wall plate on the front side of the wall
K: Pillar (construction material)
M: Magnet (detected part)
P: Ventilation pipe
S ₁ and S ₂ : Ventilation fan fixed base
V: Ventilation fan
W: Double wall
W ₁ : Wall plate on the front side of the wall
1: Mounting plate (mounting section)
1b: Mounting surface
2a: Flange plate (fixed part)
3: Pipe connection tube (ventilation pipe connection)
4: Circular opening (opening) of fixed base
21: erection rod (erection part)
22: Magnet holding cylinder part (standing part)
22b: Entrance
24: Projections
27: Retreat space
31: Thin plate material to be detected
41: Hole saw center drill
41 ': Center axis of hole saw
51: Front plate of ventilation fan

Claims

A ventilation fan fixing pedestal fixedly disposed in a wall for attaching a ventilation fan having a front plate for attachment ,
A fixed part fixed to a construction material such as a pillar in the wall, a trunk edge, etc., a ventilation pipe connection part to which a ventilation pipe piped in the wall is connected, and an opening that opens to the wall front side in communication with the ventilation pipe Part, a mounting part to which the ventilation fan is attached from the front side of the wall, and a wall plate erected on the wall surface side of the ventilation fan fixing pedestal in a state of being fixed to the construction material in the wall, and a to be detected portion capable detector by detector from the wall surface side so as to identify the drilling center position when drilling a circular opening from the wall surface side on the wall plate in order to face the opening in the wall table,
The attachment portion is provided outside the opening portion so that a screw for attaching the ventilation fan is screwed through the portion of the wall plate outside the perforated circular opening. ,
The ventilation fan is attached to the ventilation fan fixing pedestal through a screw penetrating the wall board in a form in which the wall board is sandwiched between the front plate of the ventilation fan and the ventilation fan fixing pedestal arranged on the front surface of the wall board. Ventilation fan fixed pedestal characterized by having a structure .

The ventilating fan fixing base according to claim 1, wherein a plurality of the detected parts are arranged in a portion other than the opening part toward the wall surface side.

The to-be-detected part is provided in a erection part constructed so as to span the inside of the opening part, and the erection part of the opening part does not interfere with a piercing blade penetrating the wall plate during the circular piercing. The ventilator fan fixing according to claim 1, wherein the detection fan part is formed at a position retracted from a wall surface side, and the detected part is provided on a tip side of a standing part standing from the installation part toward the wall surface side. pedestal.

The ventilation fan fixing base according to claim 3, wherein the detected part is disposed at a drilling center position of the circular drilling.

The standing portion is formed in a cylindrical shape having an entrance on the front side of the wall through which the center drill of the drilling tool by the circular drilling can enter, and the detected portion is pressed by the center drill that enters the interior from the entrance. The ventilation fan fixing base according to claim 4, further comprising a retreat space movable on the back side of the wall.

The ventilation fan fixing pedestal according to claim 5, wherein the detected part is held in a cylindrical standing part by press fitting.

The upright portion is formed in a cylindrical shape having an entrance on the front side of the wall through which a center drill of the drilling tool by the circular drilling can enter,
The detected portion is disposed so as to close the entrance at a front end surface on the wall surface side of the detected portion, and does not prevent the center drill penetrating the wall plate from entering the entrance. As described above, the ventilation fan fixing base according to claim 4, wherein the ventilation fan fixing base is formed to be thin enough to be easily pierced by the center drill.

The ventilation fan fixing base according to any one of claims 1 to 7, wherein the detected part is a magnet body.

The ventilation fan fixing base according to any one of claims 1 to 8 is fixed to the construction material in a wall,
Centering on the specified perforation center position on the wall plate, from the front side of the wall plate, drilling a circular opening in the wall plate that can face only the inside of the opening of the ventilation fan fixing base on the wall surface,
A screw for attaching the ventilation fan is passed through a portion around the circular opening in the wall plate and screwed into an attachment portion of the ventilation fan fixing base, so that the front of the ventilation fan arranged on the outside of the wall plate. A method for attaching a ventilation fan, comprising attaching the ventilation fan to the ventilation fan fixing base in a form in which the wall plate is sandwiched between the plate and the ventilation fan fixing base.