【０００１】
【発明の属する技術分野】
本発明は、警報器本体を取り付ける取付部を設けるとともに、釘状部材挿通用の挿通部を複数設けた固定板を、釘状部材により壁面に対して取り付け、その固定板に対して警報器本体を取り付けてある警報器の取付構造に関する。
【０００２】
【従来の技術】
従来、この種の警報器の取付構造としては、特許文献１に示すように、前記固定板に設けた挿通部に、直接釘状部材を挿通させつつ、壁面に打設し、前記固定板を、釘状部材により壁面に対して取り付けるものが知られている。
【０００３】
【特許文献１】
特開２００２−３２９２６６号公報
【０００４】
【発明が解決しようとする課題】
しかし、このような警報器の取付構造によると、前記挿通部は、前記釘状部材を挿通した際に、前記釘状部材を密に嵌入させるように保持可能に形成しておく必要がある。
というのは、前記挿通部が、前記釘状部材を密に嵌入保持できなければ、前記固定板が壁面に対して確実に固定されず、その挿通部と釘状部材との間の隙間の分だけ前記固定板が不安定になるためである。
【０００５】
そこで、通常、前記挿通部には、前記釘状部材の外径に一致する挿通孔を形成しておく。すると前記挿通孔に前記釘状部材を挿通させると、前記挿通孔に案内されて、前記釘状部材が所定方向にしか打設できなくなる。そのため、前記釘状部材を、壁面に対して斜交させるように打設したい場合には、前記挿通部を、前記固定板の前記壁面に接当する面に対して斜交させた姿勢に設けなければならず、前記固定板の構造が複雑になるとともに、製造困難になり、製造コストが増加するという問題があった。また、前記挿通部は、外径に一致する釘状部材専用のものとなり、汎用性に欠けるため、壁面を構成する材料に十分な強度がある場合であっても、小径の釘状部材を用いねばならず打設困難であったり、逆に、壁面を構成する材料に十分な強度がない場合に、大径の釘状部材を用いざるを得ないためにその壁面を傷めてしまったりする場合があり、壁面の状態に応じて釘状部材を使い分けるという汎用性に欠けてしまうという問題もある。また、警報器の付け替え、移動等に伴い前記釘状部材を取り外した場合には、その釘状部材の取り付け跡が残ることがあり、なるべく小さな釘状部材を用いて警報器を取り付けたいという要望もある。
そのため、特に、前記固定板に警報器本体のように小型の割に重量の大きな部材を取り付けると、固定板が不安定なために前記警報器本体ががたつき、壁面に安定な固定ができなかったり、壁面が重量に十分耐えられずに傷んだりするという問題があった。
【０００６】
従って、本発明の目的は、上記実情に鑑み、固定板に設けた挿通部が汎用の大径のものであっても、前記固定板を安定に固定でき、かつ壁面に打設固定するための釘状部材を適宜選択できる警報器の取付構造を提供することにある。
【０００７】
【課題を解決するための手段】
この目的を達成するための本発明の警報器の取付構造の特徴構成は、
警報器本体を取り付ける取付部を設けるとともに、釘状部材挿通用の挿通部を複数設けた固定板を、釘状部材により壁面に対して取り付け、その固定板に対して警報器本体を取り付けるに際し、
透明または半透明の釘状部材保持用の保持片が固定板に貼着されるとともに、前記釘状部材が、前記保持片を貫通して密に嵌入し、かつ、前記挿通部に挿通した状態で、前記壁面に打設され、前記固定板を壁面に固定してある点にある。
このとき、前記釘状部材を、前記壁面に斜交するように打設してあることが好ましい。
尚、前記保持片は、樹脂製の板状体からなり、その一方面に、接着剤または粘着剤を付設してあるとともに、その他方面側から一方面側に前記釘状部材の貫通を案内するガイド用凹部を設けてあることが好ましく、
また、前記保持片は、樹脂製の板状体からなり、その一方面に、接着剤または粘着剤を付設してあるとともに、その他方面側から一方面側に前記釘状部材の貫通を案内するガイド用突起を前記保持片の他方面に設けてあることが好ましい。
【０００８】
〔作用効果〕
前記固定板は、釘状部材挿通用の挿通部を複数設けてあるから、その固定板を釘状部材によって壁面に打設固定することができる。また、前記固定板は、警報器本体を取り付ける取付部を備えるから、その取付部に警報器本体を取り付けることにより、前記警報器本体を直接操作することなく警報器の取り付け作業が行えるので、前記警報器に悪影響を与えることなくより安全に設置作業を行える。
【０００９】
ここで、釘状部材保持用の保持片が固定板に貼着されると、前記保持片が前記挿通部近傍でその挿通部の少なくとも一部を覆うように貼着されることによって、前記釘状部材を前記保持片を介して打設するだけで、前記釘状部材が、前記保持片を貫通して密に嵌入し、かつ、前記挿通部に挿通した状態にして、前記固定板を前記壁面に打設することができる。ここで、前記保持片は、透明または半透明であるから、作業者は前記保持片を通して前記挿通孔を目視確認することができるから、容易に釘状部材の打設作業が行える。また、前記挿通部の大きさにかかわらず、その挿通孔の少なくとも一分を覆うことができる程度の大きさの保持片を貼着することによって、釘状部材を貫通させて密に嵌合させつつ打設できるので、前記固定板に設けられた、汎用のねじ孔等を挿通孔として用いることができ、特に、釘状部材の大きさ毎に想定される孔部を固定板に設けておく必要がなく、汎用性が高い。
【００１０】
このように打設された釘状部材は、前記保持片に密に嵌合した状態となっているから、前記壁面と保持片との相対位置を確実に決めることができ、前記保持片は、前記固定板に貼着されているから、前記保持片による固定板の位置決めができ、その固定板には警報器本体を取り付ける取付部を設けてあるから、その固定板に対する警報器本体の位置決めができ、その結果、壁面に対する警報器本体の位置決めが正確かつ確実に行える。
【００１１】
また、前記挿通部は複数設けてあるから、打設すべき釘の場所、数、方向を適宜設定して、その壁面の状態に応じた警報器の設置形態を選択することができる。さらに、複数位置で釘状部材を打設して前記固定板を固定すると、前記固定板にかかる荷重は複数箇所に分散されるので一箇所あたりにかかる荷重が少なくなり、石膏ボード等の比較的弱い材質の壁面にも、その壁面を傷めにくいように取り付けることができる。
【００１２】
このとき、前記釘状部材を、前記壁面に斜交するように打設すれば、前記釘状部材は、警報器本体の荷重を効率よく壁面に伝えるので、より一層安定に警報器本体を壁面に固定することができる。
【００１３】
尚、前記保持片は、樹脂製の板状体から形成してあれば、釘状部材を貫通させつつ変形させて、容易にその釘状部材に密に嵌合させることができ、前記保持片と前記釘状部材および壁面の相対位置を決められる。また、その一方面に、接着剤または粘着剤を付設してあると、前記保持片を貼着する際に作業を簡単に行えるとともに、前記保持片と前記固定板との相対位置を確実に決めることができる。また、保持片の他方面側から一方面側に前記釘状部材の貫通を案内するガイド用凹部を設けてあると、そのガイド用凹部を利用しながら前記釘状部材を前記保持片に位置決めしつつ、その保持片に貫通操作することができて、作業性を向上させることができる。
【００１４】
また、同様に、前記釘状部材の貫通を案内するガイド用突起を前記保持片の他方面に設けてあっても、前記ガイド用凹部と同様に、前記釘状部材を前記保持片に位置決めしつつ、その保持片に貫通操作することができて、作業性を向上させることができる。
【００１５】
また、このようにして前記固定板を固定すると、設置後の警報器が前記壁面を凹圧する力は、前記保持片により釘状部材の周辺部に分散されることになるため、前記壁面に壁紙等が設けてあったとしても、その壁紙等を傷めにくい。
【００１６】
尚、前記保持片に、前記凹部と前記突起とを合わせて設けてあってもよく、前記凹部は、前記保持片を貫通して設けてあってもよい。
また、接着剤や粘着剤は剥離紙とともに設けてあることが作業性の向上という観点から好ましく、前記保持片の一方面の一部に、接着剤や粘着剤を設けていない部分を設けておくと、剥離紙の除去が容易になるとともに、前記釘状部材を引き抜く必要がある場合に、その部分を手がかりに、保持片とともに前記釘状部材を一体に引き抜き操作ができることになって利便性が高い。
【００１７】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づいて説明する。
図１に、石膏ボードからなる壁面Ｗに対し、ガス警報器が取り付けられる状態を示すとともに、本発明の警報器の取付構造を説明する。
図１によると、固定板１が、保持片２および釘状部材３により壁面Ｗに対して位置決め固定され、その固定板１に設けられた取付部４に対して警報器本体５が取り付けられ、前記壁面Ｗに固定されている。
【００１８】
前記固定板１は、警報器本体５に対して装着されて警報器の背面部を構成する樹脂製または金属製の板状体で、平面視で多数の孔部１１を設けてあるとともに、前記警報器本体５裏面側に設けられた係合部５１、５２に対して係止可能な取付部４を立設して構成してある。
【００１９】
前記保持片２は、たとえば、厚さ０．３〜３ｍｍ程度のポリカーボネート等の樹脂製で、前記固定板１に貼着した際に、その保持片２を通してその固定板１の孔部１１が認識できる視認性を有する透明または半透明である。また、前記樹脂は金属製の釘状部材３を突き刺して打設しても割れず、前記釘状部材３を嵌合保持できる硬度のものを用いる。前記保持片２の一方面には粘着剤２１が塗布し剥離紙を設けてある。また、他方面の中央部にはガイド用凹部２２を形成し、前記釘状部材３を打設する際の釘打ち姿勢を安定させ、釘打ち方向を案内させられるように構成してある。また、前記保持片２の一方面には粘着剤２１を塗布せず薄肉に形成してある鍔部２３を設けてあり、前記釘状部材３の取り外しに際して、この鍔部２３をかかりに、前記保持片２ごと前記釘状部材３を引き抜き操作しやすいように構成してある。
【００２０】
前記釘状部材３としては、鋼製もしくは鉄製の釘を用い、前記孔部１１を挿通部１１ａとして、前記保持片２を貫通して密に嵌入し、かつ、前記挿通部１１ａに挿通した状態で、前記壁面Ｗに打設される。前記挿通部１１ａは必要に応じて複数箇所設定することができ、たとえば、４箇所の孔部１１を挿通部１１ａとし、それぞれの挿通部１１ａに前記釘状部材３を挿通して打設し、前記警報器本体５の荷重を分散して受けられるようにする。この釘状部材３は、前記保持板を貫通して、壁面Ｗに打設可能で、前記警報器本体５の荷重を分散支持可能な構成であればよく、木ねじ、ピンを用いることもできる。また、荷重を効率よく分散させるには、前記釘状部材３を壁面Ｗに対して斜交して打設するとよい。
【００２１】
前記取付部４は、前記固定板１を壁面Ｗに固定した状態で、前記警報器本体５の係合部５１を係止させる屈曲形状のフック４１と、前記フック４１に係止させた警報器本体５を押入操作して前記警報器本体５の係合部５２内に進入させて、前記警報器本体５を位置決め固定する凸状片４２とから構成してある。これにより、前記警報器本体５は、がたつくことなく、前記固定板１に固定される。
【００２２】
前記警報器本体５は、ガス検知素子６を設けるとともに、そのガス検知素子６が被検知ガスと接触した際の前記ガス検知素子６の物性変化を、ガス検知出力として取り出すガス検知回路（図外）を設け、そのガス検知出力を基に、被検知ガスが警報を要する濃度レベルにあるか否かを判断して警報出力を生成する警報部８、前記ガス検知回路への通電、非通電、警報の鳴動、停止を制御する制御部９等を設けて内装してある。
【００２３】
このような取付構造を有するガス警報器を壁面Ｗに取り付け固定するには、図１，図２に示すように、まず、前記固定板１を、粘着テープ１２などで壁面Ｗの取付位置に位置あわせし、仮止めする。つぎに、前記固定板１に設けられた孔部１１のうち挿通部１１ａとして用いるものに保持片２を貼着する（図３参照）。貼着された保持片２の上から釘状部材３を打設して、前記保持片２を貫通して密に嵌入し、かつ、前記挿通部１１ａに挿通した状態とする。その後、前記仮止め用の粘着テープ１２を剥がし、前記固定板１のフック４１に警報器本体５をかけて押し込み、凸状片４２を係入し、固定する。
【００２４】
尚、上述の実施の形態において、釘状部材は、壁面に対して斜交させて打設したが、これに限らず、直交させてもよい。また、上述の実施の形態において、前記保持片にガイド用凹部２２を設けたが、これに代えて図４（ａ）に示すように、ガイド用突起２４を設けて構成してあってもよい。また、ガイド用凹部は、前記保持片を貫通して設けてあってもよいが、前記釘状部材を密に嵌合させるために、前記釘状部材３の外径よりも小さな内径とし、打設するだけで密に嵌入可能に構成することが好ましい（図４（ｂ）参照）。また、前記保持片を前記固定板に対して貼着した際に他方面が壁面に対する傾斜面となるように形成してあれば、釘状部材を打設する際に、その釘状部材３を壁面に斜交して案内させやすい。また、鍔部２３についても、図示した形状に限らず適宜設定することができる。尚、最も単純には、鍔部２３やガイド用凹２２部等を設けず、単に平板状の保持片２を用いる事もでき、釘状部材３の打設後に、前記釘状部材３が、前記保持片２を貫通してその保持片２に密に嵌入し、かつ、前記挿通部１１ａに挿通した状態となるものであればよい。
【図面の簡単な説明】
【図１】警報器の分解斜視図
【図２】警報器の取付構造を示す縦断側面図
【図３】保持片の拡大縦断側面図
【図４】異なる形態の保持片の縦断側面図
【符号の説明】
１ 固定板
１１ａ 挿通部
２ 保持片
３ 釘状部材
４ 取付部
５ 警報器本体
Ｗ 壁面[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a mounting portion for mounting an alarm device main body, and a fixing plate provided with a plurality of insertion portions for inserting a nail-shaped member is mounted on a wall surface with a nail-shaped member, and the alarm device main body is mounted on the fixing plate. The present invention relates to a mounting structure of an alarm device to which is attached.
[0002]
[Prior art]
Conventionally, as a mounting structure of this type of alarm device, as shown in Patent Document 1, a nail-like member is directly inserted into an insertion portion provided in the fixing plate, and the nail-shaped member is driven into a wall surface to attach the fixing plate. In addition, there is known a device which is attached to a wall surface by a nail-shaped member.
[0003]
[Patent Document 1]
JP 2002-329266 A
[Problems to be solved by the invention]
However, according to such an alarm device mounting structure, it is necessary that the insertion portion be formed so as to be able to hold the nail-shaped member tightly when the nail-shaped member is inserted.
That is, if the insertion portion cannot closely fit and hold the nail-shaped member, the fixing plate is not securely fixed to the wall surface, and the gap between the insertion portion and the nail-shaped member is not enough. The only reason is that the fixing plate becomes unstable.
[0005]
Therefore, usually, an insertion hole corresponding to the outer diameter of the nail-shaped member is formed in the insertion portion. Then, when the nail-shaped member is inserted through the insertion hole, the nail-shaped member is guided by the insertion hole and can be driven only in a predetermined direction. Therefore, when it is desired to drive the nail-shaped member obliquely with respect to a wall surface, the insertion portion is provided in a position obliquely inclined with respect to the surface of the fixing plate that contacts the wall surface. Therefore, there is a problem that the structure of the fixing plate becomes complicated, the manufacturing becomes difficult, and the manufacturing cost increases. In addition, the insertion portion is dedicated to a nail-shaped member corresponding to the outer diameter, and lacks versatility. Therefore, even if the material forming the wall surface has sufficient strength, a small-diameter nail-shaped member is used. When it is difficult to cast the material, or when the material constituting the wall does not have sufficient strength, the wall is damaged due to the necessity of using a large diameter nail-shaped member However, there is also a problem that the versatility of selectively using nail-shaped members according to the state of the wall surface is lacking. Further, when the nail-shaped member is removed due to replacement or movement of the alarm, a trace of attachment of the nail-shaped member may remain, and there is a demand for mounting the alarm using a small nail-shaped member as much as possible. There is also.
Therefore, in particular, when a large member is attached to the fixing plate for a small size such as an alarm device main body, the alarm device main body rattles due to instability of the fixing plate, and the wall can be stably fixed to the wall. There was a problem that the wall was not provided, or the wall was damaged because it could not bear the weight sufficiently.
[0006]
Therefore, an object of the present invention is to provide a general-purpose large-diameter insertion portion provided in a fixing plate, in order to stably fix the fixing plate and to fix it to a wall surface. It is an object of the present invention to provide a mounting structure for an alarm which can appropriately select a nail-shaped member.
[0007]
[Means for Solving the Problems]
The characteristic structure of the mounting structure of the alarm device of the present invention for achieving this object is as follows.
In addition to providing a mounting portion for mounting the alarm device main body, a fixing plate provided with a plurality of insertion portions for nail-shaped member insertion is attached to a wall surface with a nail-shaped member, and when mounting the alarm device main body to the fixing plate,
A state in which a holding piece for holding a transparent or translucent nail-shaped member is stuck to a fixing plate, and the nail-shaped member penetrates the holding piece and is closely fitted, and is inserted into the insertion portion. And the fixing plate is fixed to the wall surface.
At this time, it is preferable that the nail-shaped member is driven so as to be oblique to the wall surface.
The holding piece is made of a resin plate-like body, and has an adhesive or a pressure-sensitive adhesive attached to one surface thereof, and guides the penetration of the nail-like member from the other side to the one side. Preferably, a guide recess is provided,
Further, the holding piece is made of a resin plate-like body, and has an adhesive or a pressure-sensitive adhesive attached to one surface thereof, and guides the penetration of the nail-like member from one side to the other side. It is preferable that a guide projection is provided on the other surface of the holding piece.
[0008]
(Function and effect)
Since the fixing plate has a plurality of insertion portions for inserting the nail-shaped member, the fixing plate can be driven and fixed to the wall surface by the nail-shaped member. Further, since the fixing plate has a mounting portion for mounting the alarm device main body, by attaching the alarm device main body to the mounting portion, the mounting operation of the alarm device can be performed without directly operating the alarm device main body. Installation work can be performed more safely without adversely affecting the alarm.
[0009]
Here, when the holding piece for holding the nail-shaped member is attached to the fixing plate, the holding piece is attached so as to cover at least a part of the insertion portion in the vicinity of the insertion portion, and thereby the nail is attached. The nail-shaped member penetrates through the holding piece and is fitted tightly, and the fixing plate is brought into the inserted state by simply placing the shaped member through the holding piece. Can be cast on the wall. Here, since the holding piece is transparent or translucent, an operator can visually check the insertion hole through the holding piece, so that the nail-like member can be easily driven. Also, regardless of the size of the insertion portion, by attaching a holding piece large enough to cover at least a part of the insertion hole, the nail-like member is penetrated and tightly fitted. Since it can be driven while being fixed, a general-purpose screw hole or the like provided in the fixing plate can be used as an insertion hole. In particular, a hole supposed for each size of the nail member is provided in the fixing plate. There is no need, and versatility is high.
[0010]
Since the nail-shaped member thus cast is tightly fitted to the holding piece, the relative position between the wall surface and the holding piece can be reliably determined, and the holding piece is Since the fixing plate is attached to the fixing plate, the fixing plate can be positioned by the holding piece, and the fixing plate is provided with a mounting portion for attaching the alarm device main body. As a result, the alarm device main body can be accurately and reliably positioned with respect to the wall surface.
[0011]
In addition, since a plurality of the insertion portions are provided, the location, number, and direction of nails to be driven can be appropriately set, and the installation mode of the alarm can be selected according to the state of the wall surface. Further, when the fixing plate is fixed by driving a nail-shaped member at a plurality of positions, the load applied to the fixing plate is dispersed at a plurality of positions, so that the load applied to one position is reduced, and a relatively large amount of gypsum board or the like is used. It can be attached to a weak material wall surface so that the wall surface is not easily damaged.
[0012]
At this time, if the nail-shaped member is driven so as to be oblique to the wall surface, the nail-shaped member efficiently transmits the load of the alarm device main body to the wall surface, so that the alarm device main body is more stably mounted on the wall surface. Can be fixed to
[0013]
If the holding piece is formed of a resin plate, the holding piece can be deformed while penetrating the nail-shaped member, and can be easily fitted tightly to the nail-shaped member. And the relative positions of the nail member and the wall surface can be determined. In addition, if an adhesive or a pressure-sensitive adhesive is provided on one surface, the work can be easily performed when attaching the holding piece, and the relative position between the holding piece and the fixing plate is reliably determined. be able to. Further, if a guide concave portion for guiding the penetration of the nail-shaped member is provided from the other surface side to the one surface side of the holding piece, the nail-shaped member is positioned on the holding piece while using the guide concave portion. In addition, it is possible to perform a penetrating operation on the holding piece, thereby improving workability.
[0014]
Similarly, even if a guide projection for guiding the penetration of the nail-like member is provided on the other surface of the holding piece, the nail-like member is positioned on the holding piece similarly to the guide recess. In addition, it is possible to perform a penetrating operation on the holding piece, thereby improving workability.
[0015]
Further, when the fixing plate is fixed in this manner, the force of the installed alarm device to depress the wall surface is dispersed to the peripheral portion of the nail-shaped member by the holding piece, so that the wall surface is covered with wallpaper. Even if it is provided, it is hard to damage the wallpaper and the like.
[0016]
The holding piece may be provided with the recess and the projection together, and the recess may be provided through the holding piece.
In addition, it is preferable that the adhesive or the adhesive is provided together with the release paper from the viewpoint of improving workability, and a part where the adhesive or the adhesive is not provided is provided on a part of one surface of the holding piece. With this, the removal of the release paper becomes easy, and when it is necessary to pull out the nail-shaped member, the nail-shaped member can be pulled out integrally with the holding piece by using the portion as a clue, which is convenient. high.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a state in which a gas alarm is mounted on a wall surface W made of a gypsum board, and a mounting structure of an alarm of the present invention will be described.
According to FIG. 1, a fixing plate 1 is positioned and fixed to a wall surface W by a holding piece 2 and a nail-shaped member 3, and an alarm device main body 5 is attached to an attaching portion 4 provided on the fixing plate 1. It is fixed to the wall surface W.
[0018]
The fixing plate 1 is a resin or metal plate-like body that is attached to the alarm device main body 5 and constitutes a rear portion of the alarm device, and has a large number of holes 11 in a plan view. The mounting part 4 which can be locked to the engaging parts 51 and 52 provided on the back side of the alarm device main body 5 is provided.
[0019]
The holding piece 2 is made of, for example, a resin such as polycarbonate having a thickness of about 0.3 to 3 mm. When the holding piece 2 is adhered to the fixed plate 1, the hole 11 of the fixed plate 1 is recognized through the holding piece 2. Transparent or translucent with possible visibility. The resin is made of a material that does not crack even when the metal nail-shaped member 3 is pierced and driven, and that can fit and hold the nail-shaped member 3. An adhesive 21 is applied to one surface of the holding piece 2 and a release paper is provided. A guide recess 22 is formed at the center of the other surface to stabilize the nailing position when the nail-shaped member 3 is driven and to guide the nailing direction. In addition, a thin flange 23 is provided on one surface of the holding piece 2 without applying the adhesive 21, and when removing the nail member 3, the flange 23 is engaged with the nail 23. The nail-like member 3 together with the holding piece 2 is configured to be easily pulled out.
[0020]
As the nail-shaped member 3, a steel or iron nail is used, and the hole 11 is used as the insertion portion 11a, and is tightly inserted through the holding piece 2 and inserted into the insertion portion 11a. Then, it is cast on the wall surface W. The insertion portion 11a can be set at a plurality of positions as necessary. For example, four holes 11 are used as the insertion portions 11a, and the nail-shaped member 3 is inserted into each of the insertion portions 11a and driven. The load of the alarm device main body 5 can be distributed and received. The nail-shaped member 3 may be configured so as to penetrate the holding plate and be driven into the wall surface W and be capable of distributing and supporting the load of the alarm device main body 5, and may use a wood screw or a pin. In order to efficiently disperse the load, the nail-shaped member 3 is preferably installed obliquely to the wall surface W.
[0021]
The mounting portion 4 has a bent hook 41 for locking the engaging portion 51 of the alarm device main body 5 in a state where the fixing plate 1 is fixed to the wall surface W, and an alarm device locked to the hook 41. The main body 5 is pushed into the engagement portion 52 of the alarm device main body 5 by a push-in operation, and the alarm device main body 5 is configured to have a convex piece 42 for positioning and fixing. Thereby, the alarm device main body 5 is fixed to the fixing plate 1 without rattling.
[0022]
The alarm device main body 5 is provided with a gas detection element 6 and a gas detection circuit (not shown) that takes out a change in physical properties of the gas detection element 6 when the gas detection element 6 comes into contact with a gas to be detected as a gas detection output. ) Is provided, and based on the gas detection output, an alarm unit 8 that determines whether or not the detected gas is at a concentration level requiring an alarm and generates an alarm output, energizing / de-energizing the gas detection circuit, The control unit 9 for controlling the sounding and stopping of the alarm is provided.
[0023]
In order to attach and fix the gas alarm device having such an attachment structure to the wall surface W, first, as shown in FIGS. 1 and 2, the fixing plate 1 is positioned at an attachment position of the wall surface W with an adhesive tape 12 or the like. Match and temporarily fix. Next, the holding piece 2 is attached to one of the holes 11 provided in the fixing plate 1 to be used as the insertion portion 11a (see FIG. 3). A nail-shaped member 3 is driven from above the attached holding piece 2 to penetrate the holding piece 2 to be tightly fitted, and to be in a state of being inserted into the insertion portion 11a. Thereafter, the adhesive tape 12 for temporary fixing is peeled off, the alarm device main body 5 is put on the hook 41 of the fixing plate 1 and pushed in, and the convex piece 42 is engaged and fixed.
[0024]
In the above-described embodiment, the nail-shaped member is driven obliquely to the wall surface. However, the present invention is not limited to this, and the nail-shaped member may be orthogonal. In the above-described embodiment, the holding piece is provided with the guide recess 22. Alternatively, as shown in FIG. 4A, a guide projection 24 may be provided. . The guide recess may be provided so as to penetrate the holding piece. However, in order to fit the nail-like member tightly, the inner diameter is made smaller than the outer diameter of the nail-like member 3. It is preferable that it is configured to be able to be closely fitted simply by providing (see FIG. 4B). Further, if the holding piece is formed so that the other surface becomes an inclined surface with respect to a wall surface when the holding piece is attached to the fixing plate, the nail-shaped member 3 is used when the nail-shaped member is driven. It is easy to guide obliquely to the wall. Also, the flange portion 23 is not limited to the illustrated shape, and can be appropriately set. In the simplest case, it is possible to simply use the flat holding piece 2 without providing the flange portion 23 and the guide concave portion 22. After the nail member 3 is driven, the nail member 3 Any material may be used as long as it penetrates the holding piece 2 and closely fits into the holding piece 2 and is inserted into the insertion portion 11a.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an alarm device. FIG. 2 is a vertical side view showing a mounting structure of the alarm device. FIG. 3 is an enlarged vertical side view of a holding piece. FIG. Description]
DESCRIPTION OF SYMBOLS 1 Fixing plate 11a Insertion part 2 Holding piece 3 Nail-shaped member 4 Mounting part 5 Alarm device main body W Wall
