JPH08293082A - Smoke collection structure for fire sensor - Google Patents

Abstract

PURPOSE: To provide the smoke collection structure for fire sensor which is installed between T bars and smoothly leads smoke into a fire sensor to quickly detect a fire. CONSTITUTION: A smoke collection plate 100 which closes the space formed by two T bars 8a and 8b provided on the ceiling in a prescribed range and has an aperture part 100a in the position corresponding to this space, a base which is inserted into the aperture part 100a of the smoke collection plate 100 and is attached to T bars 8a and 8b, and the fire sensor which is attached to the base and detects smoke to sense a fire are provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明はＴバーに取り付けられる
火災感知器の集煙構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a smoke detector smoke collecting structure mounted on a T-bar.

【０００２】[0002]

【従来の技術】従来の火災感知器は、例えば、実公平１
−２４７００号公報や実公平３−３７１０６号公報に記
載されているように、通常、端子金具などが設けられた
ベースと、火災の検出部や電気回路などを備えた本体部
とにより偏平な茸状に形成されており、ベースを天井等
に設けた穴に差込んで取付金具により固定すると共に、
端子金具に電源線や信号線を接続し、この端子金具に本
体部に設けた係合金具を係合して両者を機械的、電気的
に結合するようになっている。2. Description of the Related Art Conventional fire detectors are, for example,
As described in Japanese Patent No. 24700 and Japanese Utility Model Publication No. 3-37106, a flat mushroom is usually formed by a base provided with terminal fittings and the like, and a main body provided with a fire detection unit, an electric circuit, and the like. It is formed in a shape, inserts the base into the hole provided in the ceiling etc. and fixes it with the mounting bracket,
A power supply line and a signal line are connected to the terminal fitting, and an engaging fitting provided on the main body is engaged with the terminal fitting to mechanically and electrically couple the two.

【０００３】そして、ベースを天井面等に固定する場合
は、通常、対向する２本の取付金具の先端部をそれぞれ
天井裏等に係止させると共に、基端部をベースにねじ止
めしている。When fixing the base to the ceiling surface or the like, usually, the tip ends of the two fittings facing each other are locked to the ceiling back and the like, and the base end portions are screwed to the base. .

【０００４】[0004]

【発明が解決しようとする課題】ところで、近来、天井
面をできるだけすっきりさせるために、火災感知器の小
型化が要請されており、特に、最近実用化されているシ
ステム天井の場合には、天井面に穴を明けて火災感知器
を取付けることは好ましくないため、併設された２本の
Ｔバー間に火災感知器を取付けることが要望されてい
る。しかしながら、Ｔバー間の間隔は一般に２５ｍｍ程
度できわめて狭いため、従来の外径の大きい茸状の火災
感知器ではＴバーの間に取付けることができなかった。
また、Ｔバー間に火災感知器を取り付けた場合であって
も、Ｔバー間は排気や換気に利用されているため、火災
によって発生した煙がＴバー間から天井裏へ逃げやす
く、速やかな火災の検知ができないという課題があっ
た。By the way, in recent years, in order to make the ceiling surface as clean as possible, there is a demand for downsizing of the fire detector. Especially, in the case of a system ceiling which has recently been put into practical use, the ceiling is small. Since it is not preferable to attach a fire detector by making a hole in the surface, it is desired to attach the fire detector between the two T-bars provided side by side. However, since the distance between the T-bars is generally as small as about 25 mm, it is not possible to attach them between the T-bars by the conventional mushroom-shaped fire detector having a large outer diameter.
Even if a fire detector is installed between the T-bars, the smoke generated by the fire easily escapes from the space between the T-bars to the ceiling because it is used for exhaust and ventilation between the T-bars. There was a problem that a fire could not be detected.

【０００５】本発明は、上記の課題を解決すべくなされ
たもので、Ｔバー間に設置されると共に火災感知器に煙
をスムーズに導入し、速やかな火災の検知をする火災感
知器の集煙構造を得ることを目的としている。The present invention has been made to solve the above problems, and is a collection of fire detectors that are installed between T-bars and smoothly introduce smoke into the fire detectors to detect fires promptly. The purpose is to obtain a smoke structure.

【０００６】[0006]

【課題を解決するための手段】本発明に係る火災感知器
の集煙構造は、天井に併設された２本のＴバーによって
形成される隙間を所定の範囲に亘って閉塞すると共に、
前記隙間に対応した位置に開口部を有する集煙部材と、
該集煙部材の前記開口部に挿入されて前記Ｔバーに取り
付けられたベースと、該ベースに取り付けられて煙を検
知することによって火災を感知する火災感知器とを備え
たものである。A smoke collecting structure for a fire detector according to the present invention closes a gap formed by two T-bars attached to a ceiling over a predetermined range, and
A smoke collecting member having an opening at a position corresponding to the gap,
A base inserted into the opening of the smoke collecting member and attached to the T-bar, and a fire detector attached to the base to detect a fire by detecting smoke.

【０００７】また、天井に併設された２本のＴバーと、
該２本のＴバーに当接する外向きフランジが形成された
枠部を有し、前記２本のＴバーの隙間に挿入されて前記
Ｔバーに取り付けられたベースと、該ベースに取り付け
られて煙を検知することによって火災を感知する火災感
知器とを備え、前記外向きフランジを、前記２本のＴバ
ーによって形成される隙間を所定の範囲に亘って閉塞で
きるように延出して形成したものである。Also, two T-bars attached to the ceiling,
A base attached to the T-bar by being inserted into a gap between the two T-bars, and a base attached to the T-bar. A fire detector that detects a fire by detecting smoke is provided, and the outward flange is formed so as to extend so that a gap formed by the two T-bars can be closed over a predetermined range. It is a thing.

【０００８】[0008]

【作用】上記のように構成された火災感知器の集煙構造
においては、集煙部材または外向きフランジによって２
本のＴバーによって形成される隙間を閉塞するようにし
たので、火災感知器の近傍に流れてきた煙が天井裏に逃
げにくくなり火災感知器へ導入される。In the smoke detector smoke collecting structure constructed as described above, the smoke collecting member or the outward flange is used to
Since the gap formed by the T-bar of the book is closed, the smoke flowing near the fire detector is less likely to escape to the back of the ceiling and is introduced into the fire detector.

【０００９】[0009]

【実施例】以下の実施例においては、説明の都合上、ま
ず火災感知器をＴバーの間に取り付ける取付装置につい
て説明し、次にこの取付装置に取り付けられる火災感知
器を説明し、最後に本発明に係る集煙構造の実施例を説
明する。図１は本実施例に係る取付装置の正面図、図２
はその側面図で、直方体状の火災感知器を取付装置によ
りＴバーの間に取付けた状態を示す。図において、１は
ベース１１と弾性金具３１とからなる取付装置、４は火
災感知器、７は端子台、８ａ，８ｂはＴバーである。EXAMPLES In the following examples, for convenience of explanation, a mounting device for mounting the fire detector between the T-bars will be described first, then a fire detector mounted on the mounting device will be described, and finally, An embodiment of the smoke collecting structure according to the present invention will be described. 1 is a front view of a mounting device according to the present embodiment, FIG.
Is a side view showing a state where a rectangular parallelepiped fire detector is mounted between the T-bars by a mounting device. In the figure, 1 is a mounting device including a base 11 and an elastic metal fitting 31, 4 is a fire detector, 7 is a terminal block, and 8a and 8b are T-bars.

【００１０】取付装置１のベース１１を構成する門型部
１２は、図３に示すように、頂板１３と左右の縦壁１８
ａ，１８ｂとにより門型に形成されている。そして、頂
板１３の一方の縁部には、後述のコネクタ５２が嵌入さ
れる切欠き部１４と、その両側において上方に折曲げら
れた端子台７の取付片１５ａ，１５ｂとが設けられてお
り、他方の縁部には端子台７が装着されるＬ字状の嵌合
穴１６ａ，１６ｂが設けられている。１７ａ，１７ｂは
頂板１３の両端部近傍に設けられたねじ挿通穴である。As shown in FIG. 3, the gate-shaped portion 12 which constitutes the base 11 of the mounting device 1 has a top plate 13 and left and right vertical walls 18.
It is formed in a gate shape by a and 18b. Then, on one edge of the top plate 13, a notch portion 14 into which a connector 52 described later is fitted, and mounting pieces 15a and 15b of the terminal block 7 bent upward on both sides thereof are provided. The other edge has L-shaped fitting holes 16a and 16b in which the terminal block 7 is mounted. 17a and 17b are screw insertion holes provided in the vicinity of both ends of the top plate 13.

【００１１】１９ａ，１９ｂ及び２０ａ，２０ｂは両縦
壁１８ａ，１８ｂの両縁部の下端部よりやや上方まで内
側にほぼ９０°折曲げて形成された案内片である。２１
ａ，２１ｂは縦壁１８ａ，１８ｂの下端部に設けた切欠
き部である。Reference numerals 19a, 19b and 20a, 20b denote guide pieces formed by bending the vertical walls 18a, 18b inwardly at an angle of approximately 90 ° to slightly above the lower end portions of both edge portions. 21
Reference numerals a and 21b are notches provided at the lower ends of the vertical walls 18a and 18b.

【００１２】ベース１１を構成する枠部２２は、上下が
開口された長方形の周壁２３と、その下端部が外方にほ
ぼ水平に折曲げられて形成されたフランジ部２５とかな
り、周壁２３には門型部１２の縦壁１８ａ，１８ｂの切
欠き部２１ａ，２１ｂに対応して切欠き部２６ａ，２６
ｂが設けられている。なお、フランジ部２５は周壁２３
の長さ方向の両側のみに設けてもよい。２７はフランジ
部２５に設けた指標である。そして、この枠部２２は、
その切欠き部２６ａ，２６ｂを門型部１２の切欠き部２
１ａ，２１ｂと整合させ、門型部１２の下端部にスポッ
ト溶接等により一体に接合されている。The frame portion 22 which constitutes the base 11 has a rectangular peripheral wall 23 which is open at the top and bottom, and a flange portion 25 which is formed by bending the lower end portion thereof substantially horizontally outward, and is substantially formed on the peripheral wall 23. Corresponds to the notches 21a and 21b of the vertical walls 18a and 18b of the gate-shaped portion 12, and the notches 26a and 26b.
b is provided. In addition, the flange portion 25 is the peripheral wall 23.
May be provided only on both sides in the length direction. 27 is an index provided on the flange portion 25. Then, the frame portion 22 is
The cutouts 26a and 26b are used as the cutouts 2 of the gate-shaped portion 12.
Aligned with 1a and 21b, they are integrally joined to the lower end of the gate-shaped portion 12 by spot welding or the like.

【００１３】２８ａ，２８ｂはぼぼ逆Ｊ字状の板ばね
で、その下端部が枠部２２の切欠き部２６ａ，２６ｂの
下方にスポット溶接等によって接合されており、上端部
は門型部１２の切欠き部２１ａ，２１ｂから内側に突出
して係止部２９ａ，２９ｂを構成している。なお、ベー
ス１１の高さ、縦壁１８ａ，１８ｂの幅、及び枠部２２
の周壁２３で形成された火災感知器４の挿入口２４は、
後述の直方体状の火災感知器４を嵌入しうる大きさに形
成されている。この場合、挿入口２４の長さ方向は、火
災感知器４の幅より若干大きく形成してもよい。Reference numerals 28a and 28b are leaf springs having an inverted J-shape, the lower end portions of which are joined to the lower portions of the cutout portions 26a and 26b of the frame portion 22 by spot welding or the like, and the upper end portions thereof are the gate-shaped portion 12. The engaging portions 29a and 29b are formed by projecting inward from the notch portions 21a and 21b. The height of the base 11, the width of the vertical walls 18a and 18b, and the frame 22
The insertion port 24 of the fire detector 4 formed by the peripheral wall 23 of
The fire detector 4 having a rectangular parallelepiped shape, which will be described later, is formed into a size into which the fire detector 4 can be fitted. In this case, the length direction of the insertion port 24 may be formed slightly larger than the width of the fire detector 4.

【００１４】弾性金具３１は、図４に示すように、例え
ばステンレスの如き弾性材からなり、上端部が平坦に形
成されたほぼ逆Ｖ字状の一対の弾性部材３２ａ，３２ｂ
と、両弾性部材３２ａ，３２ｂの下端部を連結する連結
部３３ａ，３３ｂとからなり、連結部３３ａ，３３ｂの
下端部は互いに内側に折曲げられて当接部３４ａ，３４
ｂが形成されている。３５ａ，３５ｂは連結部３３ａ，
３３ｂのほぼ中央部を折曲げずに延出して形成された係
止片で、その下端部は当接部３４ａ，３４ｂの下面とほ
ぼ同一平面上に位置している。３６ａ，３６ｂは上部の
平坦部に設けたねじ穴である。As shown in FIG. 4, the elastic metal member 31 is made of an elastic material such as stainless steel, and has a pair of substantially inverted V-shaped elastic members 32a and 32b having flat upper ends.
And connecting portions 33a and 33b for connecting the lower end portions of both elastic members 32a and 32b. The lower end portions of the connecting portions 33a and 33b are bent inward toward each other and contact portions 34a and 34b.
b is formed. 35a and 35b are connection parts 33a,
33b is a locking piece formed by extending substantially the central portion of the portion 33b without bending, and the lower end portion thereof is located on substantially the same plane as the lower surfaces of the contact portions 34a and 34b. Reference numerals 36a and 36b are screw holes provided in the upper flat portion.

【００１５】火災感知器４は、図５に示すように、ケー
ス本体４１、煙流入部４２とによりほぼ直方体状に形成
されており、実施例では、高さＨを約１１０ｍｍ、幅Ｗ
を約６０ｍｍ、厚さＴを約２４ｍｍとした。As shown in FIG. 5, the fire detector 4 is composed of a case body 41 and a smoke inflow portion 42 in a substantially rectangular parallelepiped shape. In the embodiment, the height H is about 110 mm and the width W is W.
Was about 60 mm and the thickness T was about 24 mm.

【００１６】ケース本体４１には、その内部に、発光素
子と受光素子を有しラビリンスで囲まれた煙検出部５１
と、増幅回路や検出回路等の回路部品が搭載されたプリ
ント基板とが設けられており、両縦壁には、それぞれ凹
状の係止穴４３ａ，４３ｂが形成されており、縦方向の
隅部には、それぞれ案内部４４ａ，４４ｂ及び４５ａ，
４５ｂが設けられている。なお、５２はケース本体４１
に設けられたコネクタである。The case body 41 has a smoke detecting section 51 which has a light emitting element and a light receiving element and is surrounded by a labyrinth.
And a printed circuit board on which circuit components such as an amplification circuit and a detection circuit are mounted. Recessed locking holes 43a and 43b are formed in both vertical walls, and the vertical corners are formed. The guides 44a, 44b and 45a,
45b is provided. In addition, 52 is the case main body 41
Connector provided in the.

【００１７】また煙流入部４２には、その周壁に複数の
煙流入口５３が設けられ、防塵、防虫用のパンチメタル
あるいは金網が張られている。A plurality of smoke inlets 53 are provided on the peripheral wall of the smoke inflow portion 42, and punched metal or wire mesh for dustproofing and insect protection is stretched.

【００１８】次に、上述のような取付装置１を用いて火
災感知器４をシステム天井のＴバーの間に取付ける手順
の一例について説明する。 （１）先ず、頂板１３に端子台７が取付けられたベース
１１を、図６に示すように（図６に端子台７は省略して
ある）、下から弾性金具３１の弾性部材３２ａ，３２ｂ
の間に挿入し、ベース１１のねじ挿通穴１７ａ，１７ｂ
に下からねじ９ａ，９ｂを挿通して弾性部材３２ａ，３
２ｂのねじ穴３６ａ，３６ｂに軽く螺入する。Next, an example of a procedure for mounting the fire detector 4 between the T-bars of the system ceiling using the mounting device 1 as described above will be described. (1) First, as shown in FIG. 6 (the terminal block 7 is omitted in FIG. 6), the base 11 in which the terminal block 7 is attached to the top plate 13 is attached from below to the elastic members 32a and 32b of the elastic metal fitting 31.
Between the screw holes 17a, 17b of the base 11
Insert the screws 9a, 9b from below into the elastic members 32a, 3
Lightly screw into the screw holes 36a and 36b of 2b.

【００１９】（２）弾性金具３１をその下端部がベース
１１の枠部２２の上端部に達するまで引上げ、弾性部材
３２ａ，３２ｂがほぼ垂直になるように２本の指で押圧
する。そして、弾性金具３１を下降させてその係止片３
５ａ，３５ｂをベース１１の枠部２２の周壁２３内に挿
入し、係止させる。これにより、弾性金具３１の幅は図
７に示すように、枠部２２の周壁２３の幅より狭くな
る。(2) The elastic fitting 31 is pulled up until its lower end reaches the upper end of the frame portion 22 of the base 11, and is pressed by two fingers so that the elastic members 32a and 32b are substantially vertical. Then, the elastic metal fitting 31 is lowered to bring the locking piece 3 into contact therewith.
5a and 35b are inserted into the peripheral wall 23 of the frame portion 22 of the base 11 and locked. As a result, the width of the elastic fitting 31 becomes smaller than the width of the peripheral wall 23 of the frame portion 22, as shown in FIG. 7.

【００２０】（３）この状態で、システム天井のＴバー
８ａ，８ｂの間から引出した電源線などを端子台７に接
続し、図７に示すように、取付装置１をＴバー８ａ，８
ｂの間から挿入し、ベース１１の下端部に設けたフラン
ジ部２５をＴバー８ａ，８ｂの下面に当接させる。そし
て、下から弾性金具３１の当接部３４ａ，３４ｂを押上
げると、係止片３５ａ，３５ｂの係止が外れて弾性金具
３１はその弾性により図６に示すような元の状態に戻
る。(3) In this state, the power supply line drawn from between the T-bars 8a and 8b of the system ceiling is connected to the terminal block 7, and the mounting device 1 is mounted on the T-bars 8a and 8b as shown in FIG.
The flange 25 provided at the lower end of the base 11 is brought into contact with the lower surfaces of the T bars 8a and 8b. Then, when the contact portions 34a, 34b of the elastic metal fitting 31 are pushed up from below, the locking pieces 35a, 35b are disengaged and the elastic metal fitting 31 returns to its original state as shown in FIG. 6 due to its elasticity.

【００２１】（４）ついで、ベース１１の挿入口２４か
らドライバを差込んでねじ９ａ，９ｂを螺入すれば、弾
性金具３１が下降してその当接部３４ａ，３４ｂがＴバ
ー８ａ，８ｂの上面に当接し、ベース１１のフランジ部
２５とによりＴバー８ａ，８ｂを挟持する。さらにねじ
９ａ，９ｂを螺入すると、フランジ部２５と当接部３４
ａ，３４ｂはＴバー８ａ，８ｂに圧接され、取付装置１
はＴバー８ａ，８ｂ間に強固に固定される（図２参
照）。(4) Next, when a screwdriver is inserted from the insertion opening 24 of the base 11 and the screws 9a and 9b are screwed in, the elastic metal fitting 31 descends and the contact portions 34a and 34b of the elastic metal fittings 31 are T bars 8a and 8b. Of the base 11 and the flange 25 of the base 11 sandwiches the T-bars 8a and 8b. When the screws 9a and 9b are further screwed in, the flange portion 25 and the contact portion 34 are
a and 34b are pressed against the T-bars 8a and 8b, and the mounting device 1
Is firmly fixed between the T-bars 8a and 8b (see FIG. 2).

【００２２】（５）この状態で、ベース１１の挿入口２
４に下から火災感知器４を挿入して押込めば、そのコネ
クタ５２は端子台７のコネクタ７４に接続され、また、
側壁に設けた係止穴４３ａ，４３ｂ（係止穴４３ｂは図
示せず。）にはベース１１に設けた板ばね２８ａ，２８
ｂが係止し、図１、図２に示すように、火災感知器４は
取付装置１に確実に保持される。このとき、Ｔバー８
ａ，８ｂの下面には、ベース１１のフランジ部２５が露
出し、フランジ部２５の間からは火災感知器４の煙流入
部４２のみが突出する。(5) In this state, the insertion opening 2 of the base 11
If the fire detector 4 is inserted from below into 4 and pushed in, the connector 52 is connected to the connector 74 of the terminal block 7, and
The leaf springs 28a, 28 provided on the base 11 are provided in the engagement holes 43a, 43b provided on the side wall (the engagement hole 43b is not shown).
b is locked, and as shown in FIGS. 1 and 2, the fire detector 4 is securely held by the mounting device 1. At this time, T bar 8
The flange portion 25 of the base 11 is exposed on the lower surface of the a and 8b, and only the smoke inflow portion 42 of the fire detector 4 projects from between the flange portions 25.

【００２３】なお、火災感知器４の取付装置１への挿入
にあたっては、取付装置１のベース１１に設けた案内片
１９ａ，１９ｂ，２０ａ，２０ｂによって、火災感知器
４の案内部４４ａ，４４ｂ，４５ａ，４５ｂが案内され
るので、スムーズに挿入して取付けることができる。When inserting the fire detector 4 into the mounting device 1, the guide pieces 19a, 19b, 20a and 20b provided on the base 11 of the mounting device 1 are used to guide the guide portions 44a, 44b of the fire detector 4. Since 45a and 45b are guided, they can be smoothly inserted and attached.

【００２４】保守点検等のため火災感知器４を取付装置
１から取出すときは、取付装置１のベース１１の板ばね
２８ａ，２８ｂを外方に弾性変形させて係止部４３ａ，
４３ｂとの係止を解除して火災感知器４を引出せば、容
易に取出すことができる。When the fire detector 4 is taken out of the mounting device 1 for maintenance or inspection, the leaf springs 28a, 28b of the base 11 of the mounting device 1 are elastically deformed outward to engage the locking portions 43a ,.
It can be easily taken out by releasing the lock with 43b and pulling out the fire detector 4.

【００２５】上記の説明では、門型部１２の縦壁１８
ａ，１８ｂの下方に係止部２９ａ，２９ｂを設けた場合
を示したが、その位置は火災感知器４の係止部４３ａ，
４３ｂの位置に応じて適宜変更することができる。ま
た、弾性金具３１の弾性部材３２ａ，３２ｂの下端部を
連結部３３ａ，３３ｂで連結した場合を示したが、連結
部３３ａ，３３ｂを省略し、独立した２つの弾性部材３
２ａ，３２ｂで弾性金具３１を構成してもよい。この場
合、弾性部材３２ａ，３２ｂの下端部を互いに内側に折
曲げて当接部を形成すれば、Ｔバー８ａ，８ｂとの接触
面が増加するので、取付装置１をより確実に取付けるこ
とができる。さらに、上記の実施例では、火災感知器４
をＴバー８ａ，８ｂの間に取付ける場合を示したが、天
井等に設けた穴にも同様にして火災感知器を取付けるこ
とができる。In the above description, the vertical wall 18 of the gate-shaped portion 12 is described.
Although the case where the locking portions 29a and 29b are provided below the a and 18b is shown, the position is the locking portion 43a of the fire detector 4,
It can be appropriately changed depending on the position of 43b. Further, although the case where the lower ends of the elastic members 32a and 32b of the elastic metal fitting 31 are connected by the connecting portions 33a and 33b is shown, the connecting portions 33a and 33b are omitted and two independent elastic members 3 are provided.
You may comprise the elastic metal fitting 31 with 2a, 32b. In this case, if the lower ends of the elastic members 32a and 32b are bent inwardly to form the contact portions, the contact surface with the T-bars 8a and 8b increases, so that the mounting device 1 can be mounted more reliably. it can. Further, in the above embodiment, the fire detector 4
Although the case where the fire detector is attached between the T bars 8a and 8b is shown, the fire detector can be attached in the same manner to the hole provided in the ceiling or the like.

【００２６】図８は、上述のようにしてＴバー８ａ，８
ｂの間に取付けられた火災感知器を下方から見た状態の
説明図である。図において、９０はＴバー８ａ，８ｂ間
の隙間またはＴバー８ａ，８ｂ間の奥に設置されたレタ
ーンバッフルであり、このレターンバッフルはＴバー８
ａ，８ｂの間を換気又は排気が可能な状態に保持しつつ
下から見上げたときに隙間が見えないようにするもので
ある。この状態で火災による煙が煙流入部４２に近づい
た場合には、煙はＴバー８ａ，８ｂの間から天井裏へ逃
げやすく速やかな火災の検知ができなくなってしまう恐
れがある。そこで、本実施例では図９に示すように、火
災感知器が取り付けられたＴバー８ａ，８ｂにおける火
災感知器の近傍を板材からなる集煙板１００で塞ぎ、煙
が天井裏へ逃げるのを防止し、火災感知器の近傍に来た
煙が煙流入部４２に確実に導入できるようにしたもので
ある。FIG. 8 shows the T bars 8a, 8 as described above.
It is explanatory drawing of the state which looked at the fire detector attached between b from the downward direction. In the figure, reference numeral 90 denotes a return baffle installed in the gap between the T bars 8a and 8b or in the back of the T bars 8a and 8b.
The space between a and 8b is kept in a state where ventilation or exhaust is possible, and the gap is not visible when looking up from below. In this state, when smoke from the fire approaches the smoke inflow portion 42, the smoke easily escapes from between the T-bars 8a and 8b to the back of the ceiling, and it may not be possible to quickly detect the fire. Therefore, in the present embodiment, as shown in FIG. 9, the vicinity of the fire detectors in the T-bars 8a and 8b to which the fire detectors are attached is closed by a smoke collecting plate 100 made of a plate material to prevent smoke from escaping to the ceiling. This is to prevent the smoke coming near the fire detector from being reliably introduced into the smoke inflow section 42.

【００２７】集煙板１００は、図９に示すように、中央
部に取付装置１が挿入可能な矩形状の開口部１００ａが
設けられた矩形状の板材からなり、その短辺はＴバー８
ａ，８ｂの間に架設可能な長さに設定され、長辺は火災
感知器の両側に所定の長さ延出するように設定されてい
る。また、開口部１００ａは、その短辺がフランジ部２
５の短辺よりも若干小寸法に設定され、長辺がフランジ
部２５の長辺よりも若干小寸法に設定されている。As shown in FIG. 9, the smoke collecting plate 100 is made of a rectangular plate member having a rectangular opening portion 100a into which the mounting device 1 can be inserted, and its short side is a T bar 8.
The length is set so that it can be installed between a and 8b, and the long side is set so as to extend a predetermined length on both sides of the fire detector. The short side of the opening 100a has a flange portion 2
5 is set to be slightly smaller than the short side, and the long side is set to be slightly smaller than the long side of the flange portion 25.

【００２８】次に、集煙板１００の取付方法について説
明すると、まず集煙板１００をＴバー８ａ，８ｂの下面
に押し当てるように配置し、幅方向に押し縮められた状
態の弾性金具３１が設置されたベース１１（図７参照）
を開口部１００ａに挿入する。その後は上述した火災感
知器４をシステム天井のＴバーの間に取付ける手順
（３）以降と同様の手順で行えばよい。これによって、
集煙板１００はＴバー８ａ，８ｂとフランジ部２５とに
よって挟持されて、天井面にしっかりと取り付けられ
る。なお、上記の実施例では集煙板１００をＴバー８
ａ，８ｂの下面側に取り付ける例を示したが、本発明は
これに限られるものではなく、集煙板１００をＴバー８
ａ，８ｂの上面（天井裏側の面）側に設置するようにし
てもよい。Next, the method of mounting the smoke collecting plate 100 will be described. First, the smoke collecting plate 100 is arranged so as to be pressed against the lower surfaces of the T bars 8a and 8b, and the elastic metal fitting 31 is compressed in the width direction. Base 11 on which is installed (see FIG. 7)
Is inserted into the opening 100a. After that, the procedure similar to the procedure (3) and the subsequent steps of attaching the above-described fire detector 4 between the T-bars of the system ceiling may be performed. by this,
The smoke collecting plate 100 is sandwiched between the T-bars 8a and 8b and the flange portion 25, and is firmly attached to the ceiling surface. In the above embodiment, the smoke collecting plate 100 is attached to the T bar 8
Although the example in which the a and 8b are attached to the lower surface side is shown, the present invention is not limited to this.
It may be installed on the upper surface side (the surface on the back side of the ceiling) of a and 8b.

【００２９】また、上記の実施例では集煙板１００が取
付装置１から独立したものである場合について説明した
が、図１０，図１１に示すように、フランジ部２５をそ
の長手方向に延出させ、ベース１１と一体に形成しても
よい。このようにすれば、集煙板１００が別体の場合よ
りも取付が容易になる。In the above embodiment, the smoke collecting plate 100 is independent of the mounting device 1. However, as shown in FIGS. 10 and 11, the flange portion 25 extends in the longitudinal direction thereof. Then, it may be formed integrally with the base 11. In this way, the smoke collecting plate 100 can be attached more easily than when it is a separate body.

【００３０】[0030]

【発明の効果】以上の説明から明らかなように、本発明
によれば、集煙部材によって２本のＴバーによって形成
される隙間を閉塞するようにしたので、火災感知器の近
傍に流れてきた煙が天井裏に逃げにくくなり火災感知器
へ導入され、速やかに火災を感知することができる。As is apparent from the above description, according to the present invention, the smoke collecting member closes the gap formed by the two T-bars, so that the smoke flows near the fire detector. Smoke is not easily escaped to the ceiling and is introduced into the fire detector, enabling quick detection of fire.

【００３１】また、ベースの外向きフランジを、２本の
Ｔバーによって形成される隙間を所定の範囲に亘って閉
塞できるように延出して形成したので、集煙部材を別途
取り付ける必要がなく、集煙構造の設置が迅速にでき便
利である。Further, since the outward flange of the base is formed so as to extend so that the gap formed by the two T-bars can be closed over a predetermined range, it is not necessary to attach a smoke collecting member separately. The smoke collection structure can be installed quickly and conveniently.

【図面の簡単な説明】[Brief description of drawings]

【図１】本実施例の取付装置の正面図である。FIG. 1 is a front view of a mounting device according to an embodiment.

【図２】図１の側面図である。FIG. 2 is a side view of FIG.

【図３】取付装置を構成するベースの斜視図である。FIG. 3 is a perspective view of a base forming the attachment device.

【図４】取付装置を構成する弾性金具の斜視図である。FIG. 4 is a perspective view of an elastic metal member that constitutes the attachment device.

【図５】本実施例に取付ける火災感知器の一例の斜視図
である。FIG. 5 is a perspective view of an example of a fire detector attached to this embodiment.

【図６】本実施例の取付装置による火災感知器の取付方
法の説明図である。FIG. 6 is an explanatory diagram of a method of mounting the fire detector by the mounting device of the present embodiment.

【図７】本実施例の取付装置による火災感知器の取付方
法の説明図である。FIG. 7 is an explanatory diagram of a method of mounting the fire detector by the mounting device of the present embodiment.

【図８】本実施例における集煙板の取付前の状態の説明
図である。FIG. 8 is an explanatory diagram of a state before attachment of the smoke collecting plate in the present embodiment.

【図９】本実施例における集煙板の取付後の状態の説明
図である。FIG. 9 is an explanatory diagram of a state after attachment of the smoke collecting plate in the present embodiment.

【図１０】他の本実施例における集煙板の取付後の状態
の説明図である。FIG. 10 is an explanatory view of a state after attachment of the smoke collecting plate in another embodiment.

【図１１】他の本実施例における集煙板の取付後の状態
の説明図である。FIG. 11 is an explanatory view of a state after attachment of the smoke collecting plate in another embodiment.

【符号の説明】[Explanation of symbols]

１ 取付装置 ４ 火災感知器 ８ａ，８ｂ Ｔバー ９ａ，９ｂ ねじ １１ ベース １２ 門型部 ２２ 枠部 ２５ フランジ部 ３１ 弾性金具 １００ 集煙板 1 Mounting Device 4 Fire Detector 8a, 8b T Bar 9a, 9b Screw 11 Base 12 Gate Model 22 Frame 25 Flange 31 Elastic Metal Fitting 100 Smoke Plate

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 天井に併設された２本のＴバーによって
形成される隙間を所定の範囲に亘って閉塞すると共に、
前記隙間に対応した位置に開口部を有する集煙部材と、 該集煙部材の前記開口部に挿入されて前記Ｔバーに取り
付けられたベースと、 該ベースに取り付けられて煙を検知することによって火
災を感知する火災感知器とを備えたことを特徴とする火
災感知器の集煙構造。1. A gap formed by two T-bars attached to a ceiling is closed over a predetermined range, and
A smoke collecting member having an opening at a position corresponding to the gap; a base inserted into the opening of the smoke collecting member and attached to the T bar; and a smoke attached to the base to detect smoke. A smoke detector structure for a fire detector, comprising: a fire detector for detecting a fire. 【請求項２】 天井に併設された２本のＴバーと、該２
本のＴバーに当接する外向きフランジが形成された枠部
を有し、前記２本のＴバーの隙間に挿入されて前記Ｔバ
ーに取り付けられたベースと、該ベースに取り付けられ
て煙を検知することによって火災を感知する火災感知器
とを備え、 前記外向きフランジを、前記２本のＴバーによって形成
される隙間を所定の範囲に亘って閉塞できるように延出
して形成したことを特徴とする火災感知器の集煙構造。2. Two T-bars attached to the ceiling and the two
A frame that has an outward flange that contacts the T-bar of the book, is inserted into the gap between the two T-bars and is attached to the T-bar, and smoke is attached to the base. And a fire detector for detecting a fire by detecting, wherein the outward flange is formed so as to extend so that the gap formed by the two T-bars can be closed over a predetermined range. The smoke collecting structure of the characteristic fire detector.