JPH05303697A - Photoelectric smoke sensor - Google Patents
Photoelectric smoke sensorInfo
- Publication number
- JPH05303697A JPH05303697A JP13153692A JP13153692A JPH05303697A JP H05303697 A JPH05303697 A JP H05303697A JP 13153692 A JP13153692 A JP 13153692A JP 13153692 A JP13153692 A JP 13153692A JP H05303697 A JPH05303697 A JP H05303697A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- light emitting
- light receiving
- circuit board
- photoelectric smoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、光電式煙感知器に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photoelectric smoke detector.
【０００２】[0002]
【従来の技術】従来の光電式煙感知器は、ボディとカバ
ーの嵌合により筐体を形成し、このボディの底面部にプ
リント基板を配設するとともに、前記筐体の上面に開口
部を形成し、この開口部内に光学室台を配置して、この
光学台上に投光素子や受光素子を光軸が光学室台と略平
行になるように配設し、ラビリンス付上面板を筐体の上
面開口部を通して前記光学室台を覆うように被せ、この
ラビリンス付上面板の外周を防虫網で覆っている。（特
公昭６３−３４５２０号参照）2. Description of the Related Art In a conventional photoelectric smoke detector, a housing is formed by fitting a body and a cover, a printed circuit board is arranged on the bottom surface of the body, and an opening is formed on the upper surface of the housing. The optical chamber base is formed in this opening, and the light projecting element and the light receiving element are arranged on the optical base so that the optical axis is substantially parallel to the optical chamber base. The optical chamber base is covered so as to pass through the upper opening of the body, and the outer periphery of the labyrinth-equipped upper surface plate is covered with an insect screen. (See Japanese Patent Publication No. 63-34520)
【０００３】[0003]
【発明が解決しようとする課題】従来例の光電式煙感知
器は、固定手段として多くのねじを用いているので、組
み立てや分解が極めて面倒で時間がかかる。又、筐体の
開口部内の光学室台は、プリント基板上の電気回路部品
を保護するため、Ｌ字状折曲脚を介して該プリント基板
から離間されているので、Ｌ字状折曲脚の長さ分だけ筐
体の高さが高くなる。そこで、感知器を薄くする場合に
は、暗室の高さを低くすることが考えられるが、このよ
うにすると、感知器の性能の低下を招くので好ましくな
い。そこで、やむをえず、暗箱の高さを通常の高さにし
ているため感知器自体が厚くなってしまう。Since the photoelectric smoke detector of the conventional example uses many screws as the fixing means, the assembly and disassembly are extremely troublesome and time consuming. Further, the optical chamber base in the opening of the housing is separated from the printed circuit board through the L-shaped bent leg in order to protect the electric circuit components on the printed circuit board. The height of the housing increases by the length of. Therefore, it is conceivable to lower the height of the dark room when making the sensor thinner, but this is not preferable because it causes deterioration of the performance of the sensor. Therefore, the detector itself becomes thick because the height of the dark box is set to the normal height.
【０００４】この発明は上記事情に鑑み、組み立てや分
解を容易にするとともに、感知器自体を薄くしても暗室
の高さが十分である様にすることを目的とする。In view of the above circumstances, it is an object of the present invention to facilitate assembling and disassembling, and to make the height of a dark room sufficient even if the sensor itself is thin.
【０００５】[0005]
【課題を解決するための手段】この発明は、下面に設け
た導電性接続金具と上面に設けたプリント基板とが端子
ねじにより固定されてる本体と；該基板に係合手段を介
して直接固定された光学台と；該光学台に設けられた一
対の発光素子と受光素子と；前記光学台に配設された環
状のラビリンスと；該ラビリンスの外周に設けられた防
虫網と；前記光学台の上面を覆う光学台カバーと；前記
基板、光学台、防虫網及び光学台カバーを覆い、前記本
体と係合する煙流入口付保護カバーと；を備えたことを
特徴とする光電式煙感知器、により前記目的を達成しよ
うとするものである。SUMMARY OF THE INVENTION According to the present invention, a main body in which a conductive connection fitting provided on a lower surface and a printed circuit board provided on an upper surface are fixed by terminal screws; An optical stand; a pair of light emitting element and light receiving element provided on the optical stand; an annular labyrinth provided on the optical stand; an insect screen provided on the outer periphery of the labyrinth; the optical stand An optical table cover for covering the upper surface of the photoelectric sensor, an optical table cover, an insect screen, and a protective cover with a smoke inlet for covering the optical table cover and engaging with the main body; Is intended to achieve the above-mentioned object.
【０００６】[0006]
【作用】発光素子と受光素子とラビリンスとを備えた受
光台をプリント基板に直接載置し、両者を係止させて固
定する。該ラビリンスの外周に防虫網を設けるととも
に、光学台の上面に光学台カバーを被せ、そして、本体
の下面に刃金具などの導電性接続金具を、その上面にプ
リント基板をねじで共締めする。その後、該光学台カバ
ーを覆う様にしながら保護カバーを本体に係合させて固
定する。The light receiving base including the light emitting element, the light receiving element, and the labyrinth is directly placed on the printed board, and both are locked and fixed. An insect screen is provided on the outer periphery of the labyrinth, an optical table cover is placed on the upper surface of the optical table, and conductive connecting metal fittings such as blades are attached to the lower surface of the main body, and a printed circuit board is screwed to the upper surface. After that, the protective cover is engaged and fixed to the main body while covering the optical bench cover.
【０００７】[0007]
【実施例】この発明の実施例を添付図面により説明す
る。本体１は図１１示す様に構成されている。該本体１
の上面１ａには、挿通孔２の付いた支持柱３と、プリン
ト基板１０の位置決め用の突起９とが突設され、又、該
本体１の外周部には係止部４が設けられている。この本
体１の下面１ｂには、図２に示すような排水用の環状溝
１Ｒが形成されているが、この環状溝１Ｒは本体１の外
周縁部に形成した排水穴１Ｈと連通している。この本体
１の下面１ｂには、図１２に示す導電性接続金具として
の刃金具５が固定される。該刃金具５は、固定部５ａと
刃部５ｂとから構成されている。この固定部５ａには、
図９に示す端子ねじ６と螺合するねじ穴７が設けられて
いる。また、刃部５は、図示しないベースの導電性接続
金具としての刃受金具と係合接続される。Embodiments of the present invention will be described with reference to the accompanying drawings. The main body 1 is constructed as shown in FIG. The body 1
A support column 3 having an insertion hole 2 and a projection 9 for positioning the printed circuit board 10 are provided on the upper surface 1a of the main body 1a, and a locking portion 4 is provided on the outer peripheral portion of the main body 1. There is. An annular groove 1R for drainage as shown in FIG. 2 is formed on the lower surface 1b of the main body 1. The annular groove 1R communicates with a drain hole 1H formed in the outer peripheral edge of the main body 1. .. A blade fitting 5 as a conductive connecting fitting shown in FIG. 12 is fixed to the lower surface 1b of the main body 1. The blade fitting 5 is composed of a fixed portion 5a and a blade portion 5b. In this fixed part 5a,
A screw hole 7 for screwing with the terminal screw 6 shown in FIG. 9 is provided. Further, the blade portion 5 is engaged and connected with a blade receiving metal fitting as a conductive connecting metal fitting of a base not shown.
【０００８】プリント基板１０は、図１０に示す様に構
成されている。該プリント基板１０の上面１０ａには、
十字状の広い面積のシールド部１１とチェック端子１２
とシールド部１１上に形成される光学台載置部１３と表
示灯１４とが設けられている。該プリント基板１０の下
面１０ｂには表面実装タイプの電気回路部品１０ｅが設
けられている。又、該プリント基板１０には、光学台４
０のフック４８を通す挿通孔１７が設けられ、下面１０
ｂ側の挿通孔１７の周縁には前記フック４８の係止部１
７ａが設けられている。The printed circuit board 10 is constructed as shown in FIG. On the upper surface 10a of the printed circuit board 10,
Wide cross-shaped shield part 11 and check terminal 12
An optical bench mounting portion 13 and an indicator lamp 14 formed on the shield portion 11 are provided. A surface mounting type electric circuit component 10e is provided on the lower surface 10b of the printed circuit board 10. The optical board 4 is provided on the printed circuit board 10.
The through hole 17 through which the hook 48 of 0 is inserted is provided, and the lower surface 10
At the periphery of the insertion hole 17 on the b side, the engaging portion 1 of the hook 48 is provided.
7a is provided.
【０００９】光学台ホルダ２０は図８、図１６に示す様
に構成されている。該光学台ホルダ２０は、Ｌ字状に形
成され、その一端部には該ホルダ２０の中心に向かい順
次、発光素子収納部２２とレンズ収納部２３と発光窓部
２４とが形成されており、又、他端部には、該ホルダ２
０の中心に向かい順次、受光素子収納部２５とシールド
ケース収納部２８と受光窓を備えた下部遮光壁２９とが
形成されている。前記発光素子収納部２２及び受光素子
収納部２５の下部には、前記収納部２２、２５と連続す
る垂直状の挿通孔２２ａ、２５ａが形成されている。該
ホルダ２０の底面２０ａは、水平状であり、又、前記収
納部２２、２５の上面は開放されていて上側から発光素
子３０、受光素子３５が差し込めるようになっている。The optical table holder 20 is constructed as shown in FIGS. The optical table holder 20 is formed in an L shape, and a light emitting element housing portion 22, a lens housing portion 23, and a light emitting window portion 24 are sequentially formed at one end portion thereof toward the center of the holder 20. Further, the holder 2 is attached to the other end.
A light-receiving element housing portion 25, a shield case housing portion 28, and a lower light-shielding wall 29 having a light-receiving window are sequentially formed toward the center of 0. Vertical insertion holes 22a and 25a, which are continuous with the storage portions 22 and 25, are formed in the lower portions of the light emitting element storage portion 22 and the light receiving element storage portion 25, respectively. The bottom surface 20a of the holder 20 is horizontal, and the upper surfaces of the storage portions 22 and 25 are open so that the light emitting element 30 and the light receiving element 35 can be inserted from the upper side.
【００１０】図８、図１５に示す様に、発光素子、例え
ば、ＬＥＤ３０は光軸が軸心に対して直角方向に形成さ
れている所謂サイド発光式発光素子であり、その下部に
は垂直状のリード端子３１が設けられている。この発光
素子を用いると、リード端子の折り曲げが不要となり、
取付作業が簡単となる。レンズ３２の上部及び下部に
は、それぞれ支持部３３、３４が設けられている。受光
素子、例えば、ＰＤ３５は光軸が軸心と直角方向であ
り、その下部には垂直状のリード端子３６が設けられて
いる。シールドケース３７は無塗装であり、その前面に
は受光窓３８が形成されている。前記発光素子３０、レ
ンズの支持部３３、及びシールドケース３７のそれぞれ
上面には、光学台４０に圧接される当接部３０ａ、３３
ａ、３７ａが形成されている。As shown in FIGS. 8 and 15, the light emitting element, for example, the LED 30 is a so-called side light emitting element in which the optical axis is formed in a direction perpendicular to the axis, and the vertical shape is provided below the light emitting element. Is provided with a lead terminal 31 of. By using this light emitting element, there is no need to bend the lead terminals,
Installation work becomes easy. Supports 33 and 34 are provided on the upper and lower portions of the lens 32, respectively. The light receiving element, for example, the PD 35 has an optical axis perpendicular to the axis, and a vertical lead terminal 36 is provided below the optical axis. The shield case 37 is unpainted, and a light receiving window 38 is formed on the front surface thereof. The light emitting element 30, the lens supporting portion 33, and the shield case 37 have respective contact portions 30a and 33 on the upper surfaces thereof, which are in pressure contact with the optical stand 40.
a and 37a are formed.
【００１１】光学台４０は図７、図１４、図１７、図１
８、に示す様に構成されている。光学台４０の底面４０
ａには、下面が開放されている発光部収納部４１と受光
部収納部４２と遮光柱４３とが設けられている。両収納
部４１、４２は前記光学台ホルダ２０に対応して形成さ
れ、発光部収納部４１の内面には、発光素子３０に圧接
する当接部４１ａと、レンズ３２を収納し該レンズ３２
に圧接する溝部４５が設けられている。受光部収納部４
２の内面には、下部遮光壁２９と当接する上部遮光壁４
４と、シールドケース３７に圧接する当接部４２ａとが
形成されている。光学台の底面４０ａには、前記発光部
収納部４１と受光部収納部４２とを挟む様にしてラビリ
ンス４７が環状に配設されている。該ラビリンス４７の
外周には、図６に示す防虫網４６が設けられているが、
この防虫網４６は環状壁４９により支持されている。こ
の環状壁４９は光学台４０の側部に設けられ、かつ、そ
の先端４９ａはラビリンス４７の下部側に位置してい
る。光学台４０の側部には、円周方向に間隔をおいて３
本のフック４８が設けられている。The optical table 40 is shown in FIGS. 7, 14, 17, and 1.
It is configured as shown in FIG. Bottom 40 of optical bench 40
At a, a light emitting portion housing portion 41, a light receiving portion housing portion 42, and a light shielding column 43 whose lower surface is open are provided. Both of the accommodating portions 41 and 42 are formed corresponding to the optical base holder 20, and an abutting portion 41 a that is in pressure contact with the light emitting element 30 and a lens 32 are accommodated on the inner surface of the light emitting portion accommodating portion 41.
A groove portion 45 that is pressed against is provided. Light receiving section storage section 4
On the inner surface of 2, the upper light shielding wall 4 that abuts the lower light shielding wall 29
4 and an abutting portion 42a that comes into pressure contact with the shield case 37 are formed. A labyrinth 47 is annularly arranged on the bottom surface 40a of the optical table so as to sandwich the light emitting portion housing portion 41 and the light receiving portion housing portion 42. On the outer periphery of the labyrinth 47, an insect screen 46 shown in FIG. 6 is provided.
The insect screen 46 is supported by an annular wall 49. The annular wall 49 is provided on the side of the optical table 40, and the tip 49 a thereof is located on the lower side of the labyrinth 47. On the sides of the optical bench 40, there are 3
Book hooks 48 are provided.
【００１２】光学台カバー５０は図５、図１３に示す様
に構成されている。光学台カバー５０の上面中央側及び
外周側には円筒状部５１、５２が設けられ、又、その下
面には複数の突起部５４が形成されている。この突起部
５４はラビリンス４７、発光部収納部４１、受光部収納
部４２のそれぞれの上面に形成されている嵌着孔４７
ｂ、４１ｂ、４２ｂに嵌着される。The optical bench cover 50 is constructed as shown in FIGS. Cylindrical portions 51 and 52 are provided on the center side and the outer peripheral side of the upper surface of the optical bench cover 50, and a plurality of protrusions 54 are formed on the lower surface thereof. The projecting portion 54 is a fitting hole 47 formed on the upper surface of each of the labyrinth 47, the light emitting portion housing portion 41, and the light receiving portion housing portion 42.
It is fitted to b, 41b, 42b.
【００１３】保護カバー６０は図１、図３、図４に示す
様に構成されている。この保護カバー６０は鍔部６１に
連結柱６２を介して天板６３に接続されている。該鍔部
６１にはチェック棒挿通孔６４及び表示灯穴６６が設け
られ、又、該鍔部６１と天板６３との間には煙流入口６
５が設けられている。該鍔部６１の外周縁には本体１の
係合部４に係止するフック６７が設けられている。The protective cover 60 is constructed as shown in FIGS. 1, 3 and 4. The protective cover 60 is connected to the flange portion 61 via a connecting column 62 and a top plate 63. The collar portion 61 is provided with a check rod insertion hole 64 and an indicator light hole 66, and the smoke inlet 6 is provided between the collar portion 61 and the top plate 63.
5 are provided. A hook 67 that engages with the engaging portion 4 of the main body 1 is provided on the outer peripheral edge of the collar portion 61.
【００１４】次に本実施例の作動について説明する。光
学台ホルダ２０の挿通孔２２ａにリード端子３１を挿入
して発光素子収納部２２にサイド発光式発光素子３０を
収納した後、レンズ３２の支持部３４をレンズ収納部２
３に収納する。この時、発光素子３０とリード端子３１
とは垂直状に保持される。挿通孔２５ａにリード端子３
６を挿入して受光素子収納部２５に受光素子３５を収納
する。この時、受光素子３５とリード端子３１とは垂直
状に保持される。又、シールドケース収納部２８にシー
ルドケース３７を嵌着し、受光素子３５に被せ、シール
ドする。Next, the operation of this embodiment will be described. After inserting the lead terminal 31 into the insertion hole 22a of the optical base holder 20 to store the side light emitting type light emitting element 30 in the light emitting element housing portion 22, the support portion 34 of the lens 32 is attached to the lens housing portion 2.
Store in 3. At this time, the light emitting element 30 and the lead terminal 31
And are held vertically. The lead terminal 3 is inserted into the insertion hole 25a.
6 is inserted and the light receiving element 35 is stored in the light receiving element storage portion 25. At this time, the light receiving element 35 and the lead terminal 31 are held vertically. Further, the shield case 37 is fitted in the shield case housing portion 28, and the light receiving element 35 is covered and shielded.
【００１５】光学台ホルダ２０を光学台４０の底面４０
ａに差し込み、発光部収納部４１に発光素子３０を収納
し、受光部収納部４２に受光素子３５を収納する。The optical base holder 20 is attached to the bottom surface 40 of the optical base 40.
The light emitting element 30 is housed in the light emitting portion housing 41, and the light receiving element 35 is housed in the light receiving portion housing 42.
【００１６】この光学台４０のフック４８をプリント基
板１０の挿通孔１７に挿入し、該フック４８を係止部１
７ａに係合する。そうすると、光学台４０は３本のフッ
ク４８によりセンタリングされながら、その底面４０ａ
が直接プリント基板１０上に当接される。この状態にお
いて光学台４０は、正確に光学台載置部１３に位置せし
められ、又、光学台ホルダ２０は光学台４０とプリント
基板１０により挟持される。The hook 48 of the optical table 40 is inserted into the insertion hole 17 of the printed circuit board 10, and the hook 48 is fixed to the engaging portion 1.
7a is engaged. Then, the optical base 40 is centered by the three hooks 48, and the bottom surface 40a thereof is
Are directly brought into contact with the printed circuit board 10. In this state, the optical base 40 is accurately positioned on the optical base mounting portion 13, and the optical base holder 20 is sandwiched between the optical base 40 and the printed circuit board 10.
【００１７】この時、光学台ホルダ２０の発光素子３０
の当接部３０ａ、レンズ３２の支持部３３の当接部３３
ａ、シールドケース３７の当接部３７ａはそれぞれ光学
台内面の当接部４１ａ、４２ａ、溝部４５、により押圧
されるので、それらは正確に所定位置に配設され、振動
などがあってもその位置が狂うことはない。従って、発
光素子３０と受光素子３５の光軸Ｌは光学台４０の底面
４０ａに平行な状態を常に維持することができる。この
光軸Ｌは環状壁４９の先端４９ａとほぼ同じ高さに位置
する。At this time, the light emitting element 30 of the optical bench holder 20
Abutting portion 30a of the lens 32, abutting portion 33 of the supporting portion 33 of the lens 32
Since a and the contact portion 37a of the shield case 37 are pressed by the contact portions 41a and 42a and the groove portion 45 on the inner surface of the optical table, respectively, they are accurately arranged at predetermined positions, and even if there is vibration or the like. The position never goes out of order. Therefore, the optical axes L of the light emitting element 30 and the light receiving element 35 can always be kept parallel to the bottom surface 40a of the optical base 40. The optical axis L is located at substantially the same height as the tip 49a of the annular wall 49.
【００１８】ラビリンス４７の外周に防虫網４６を設
け、該防虫網４６を環状壁４９により支持する。その
後、光学台カバー５０の突起部５４をラビリンス４７の
嵌着孔４７ｂ、発光部収納部４１の嵌着孔４１ｂ、受光
部収納部４２ｂに嵌着する。これにより、光学台４０の
内部は暗くなり、所謂、暗箱が形成される。この時、シ
ールドケース３７は光学台４０の受光部収納部４２と上
部遮光壁４４及び光学台ホルダ２０の下部遮光壁２９と
により囲まれているので、煙監視空間Ｓに露出すること
はない。そのため、シールドケース３７を無塗装にして
も、暗箱内の散乱光は該シールドケースにより反射され
ることはない。なお、この実施例では暗箱の内上面と内
下面との間の高さを十分確保できるとともに本体下面か
ら暗箱上面までの高さを低くすることができる。An insect screen 46 is provided on the outer periphery of the labyrinth 47, and the insect screen 46 is supported by an annular wall 49. After that, the protrusion 54 of the optical bench cover 50 is fitted into the fitting hole 47b of the labyrinth 47, the fitting hole 41b of the light emitting unit housing 41, and the light receiving unit housing 42b. As a result, the inside of the optical bench 40 becomes dark, and a so-called dark box is formed. At this time, the shield case 37 is not exposed to the smoke monitoring space S, because it is surrounded by the light receiving section housing 42 of the optical stand 40, the upper light blocking wall 44 and the lower light blocking wall 29 of the optical stand holder 20. Therefore, even if the shield case 37 is unpainted, the scattered light in the dark box is not reflected by the shield case. In this embodiment, a sufficient height can be secured between the inner upper surface and the inner lower surface of the dark box and the height from the lower surface of the main body to the upper surface of the dark box can be reduced.
【００１９】本体１の支持柱３にプリント基板１０を載
置するとともに突起９の先端をプリント基板１０の孔に
挿入し、挿通孔２、１７に端子ねじ６を挿入する。その
後、該本体１の下面１ｂに刃金具５の固定部５ａを当接
し、前記端子ねじ６を回転させてねじ穴７に装着して固
定する。保護カバー６０を光学台カバー５０に向かって
移動し、フック６７を本体１の係止部４に係合せしめて
固定する。The printed circuit board 10 is placed on the support column 3 of the main body 1, the tips of the projections 9 are inserted into the holes of the printed circuit board 10, and the terminal screws 6 are inserted into the insertion holes 2 and 17. After that, the fixing portion 5a of the blade fitting 5 is brought into contact with the lower surface 1b of the main body 1, and the terminal screw 6 is rotated and mounted in the screw hole 7 and fixed. The protective cover 60 is moved toward the optical base cover 50, and the hook 67 is engaged with the locking portion 4 of the main body 1 to be fixed.
【００２０】この発明の実施例は上記に限定されるもの
ではなく、例えば、光学台４０の下面４０ａを直接プリ
ント基板１０に固定する代わりに、下面に環状リングを
設け該リングをプリント基板１０に当接させるようにし
てもよい。又、環状リングの代わりに複数、例えば、３
個の突起を円周方向に間隔をおいて配設してもよい。ま
た、チェック端子１２は、プリント基板１０上にプリン
トパターンで形成するようにしてもよく、保護カバー６
０のチェック棒挿通孔６４は省略してもよい。また、導
電性接続金具として刃受金具などを用いてもよい。The embodiment of the present invention is not limited to the above. For example, instead of directly fixing the lower surface 40a of the optical bench 40 to the printed board 10, an annular ring is provided on the lower surface and the ring is attached to the printed board 10. You may make it contact. Also, instead of the annular ring, a plurality, for example, 3
The individual protrusions may be arranged at intervals in the circumferential direction. Further, the check terminal 12 may be formed on the printed circuit board 10 in a printed pattern, and the protective cover 6
The check rod insertion hole 64 of 0 may be omitted. Further, a blade receiving fitting or the like may be used as the conductive connecting fitting.
【００２１】[0021]
【発明の効果】この発明は以上の様に構成したので、従
来例に比べねじ止め箇所が少ないため、感知器の組み立
てや分解が容易となる。又、プリント基板に係合手段を
介して受光台を直接固定するので、従来例と異なり感知
器を薄くしても暗箱の高さを十分維持することができ
る。従って、性能を低下させることなく感知器を薄型に
することができる。Since the present invention is configured as described above, the number of screwed points is smaller than that of the conventional example, and therefore the sensor can be easily assembled and disassembled. Further, since the light receiving base is directly fixed to the printed circuit board through the engaging means, the height of the dark box can be sufficiently maintained even if the sensor is thinned unlike the conventional example. Therefore, the sensor can be made thin without deteriorating the performance.
【図１】本発明の実施例を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.
【図２】本発明の実施例を示す底面図である。FIG. 2 is a bottom view showing an embodiment of the present invention.
【図３】図１のＡ−Ａ線断面拡大図である。FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.
【図４】本発明の保護カバーを示す斜視図である。FIG. 4 is a perspective view showing a protective cover of the present invention.
【図５】本発明の光学台カバー等を示す斜視図である。FIG. 5 is a perspective view showing an optical bench cover and the like of the present invention.
【図６】本発明の防虫網を示す斜視図である。FIG. 6 is a perspective view showing an insect screen of the present invention.
【図７】本発明の光学台を示す斜視図である。FIG. 7 is a perspective view showing an optical bench of the present invention.
【図８】本発明の光学台ホルダ等を示す斜視図である。FIG. 8 is a perspective view showing an optical bench holder and the like of the present invention.
【図９】本発明の端子ねじを示す斜視図である。FIG. 9 is a perspective view showing a terminal screw of the present invention.
【図１０】本発明のプリント基板を示す斜視図である。FIG. 10 is a perspective view showing a printed circuit board of the present invention.
【図１１】本発明の本体を示す斜視図である。FIG. 11 is a perspective view showing a main body of the present invention.
【図１２】本発明の刃金具を示す斜視図である。FIG. 12 is a perspective view showing a blade fitting of the present invention.
【図１３】本発明の図１のＡ−Ａ線断面における光学台
カバーを示す断面図である。FIG. 13 is a cross-sectional view showing the optical bench cover taken along the line AA of FIG. 1 of the present invention.
【図１４】本発明の図１のＡ−Ａ線断面における光学台
を示す断面図である。14 is a cross-sectional view showing the optical bench in the cross section taken along the line AA in FIG. 1 of the present invention.
【図１５】本発明の図１のＡ−Ａ線断面におけるシ−ル
ドケース、レンズ、発光素子、受光素子を示す断面図で
ある。FIG. 15 is a cross-sectional view showing the shield case, the lens, the light emitting element, and the light receiving element taken along the line AA of FIG. 1 of the present invention.
【図１６】本発明の図１のＡ−Ａ線断面における光学台
ホルダを示す断面図である。16 is a cross-sectional view showing the optical bench holder taken along the line AA in FIG. 1 of the present invention.
【図１７】本発明の光学台の平面図である。FIG. 17 is a plan view of the optical bench of the present invention.
【図１８】本発明の光学台の底面図である。FIG. 18 is a bottom view of the optical bench of the present invention.
１ 本体 ５ 刃金具（導電性接続金具） １０ プリント基板 ２０ 光学台ホルダ ３０ 発光素子 ３５ 受光素子 ３７ シールドケース ４０ 光学台 ４６ 防虫網 ４７ ラビリンス ５０ 光学台カバー ６０ 保護カバー 1 main body 5 blade metal fittings (conductive connection metal fittings) 10 printed circuit board 20 optical stand holder 30 light emitting element 35 light receiving element 37 shield case 40 optical stand 46 insect screen 47 labyrinth 50 optical stand cover 60 protective cover
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年３月１６日[Submission date] March 16, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】[0007]
【実施例】この発明の実施例を添付図面により説明す
る。本体１は図１１に示す様に構成されている。該本体
１の上面１ａには、挿通孔２の付いた支持柱３と、プリ
ント基板１０の位置決め用の突起９とが突設され、又、
該本体１の外周部には係止部４が設けられている。この
本体１の下面１ｂには、図２に示すような排水用の環状
溝１Ｒが形成されているが、この環状溝１Ｒは本体１の
外周縁部に形成した排水穴１Ｈと連通している。この本
体１の下面１ｂには、図１２に示す導電性接続金具とし
ての刃金具５が固定される。該刃金具５は、固定部５ａ
と刃部５ｂとから構成されている。この固定部５ａに
は、図９に示す端子ねじ６と螺合するねじ穴７が設けら
れている。また、刃部５は、図示しないベースの導電性
接続金具としての刃受金具と係合接続される。Embodiments of the present invention will be described with reference to the accompanying drawings. The main body 1 is constructed as shown in FIG. On the upper surface 1a of the main body 1, a support column 3 having an insertion hole 2 and a projection 9 for positioning the printed circuit board 10 are provided so as to project.
A locking portion 4 is provided on the outer peripheral portion of the main body 1. An annular groove 1R for drainage as shown in FIG. 2 is formed on the lower surface 1b of the main body 1. The annular groove 1R communicates with a drain hole 1H formed in the outer peripheral edge of the main body 1. .. A blade fitting 5 as a conductive connecting fitting shown in FIG. 12 is fixed to the lower surface 1b of the main body 1. The blade fitting 5 has a fixed portion 5a.
And a blade portion 5b. The fixing portion 5a is provided with a screw hole 7 into which the terminal screw 6 shown in FIG. 9 is screwed. Further, the blade portion 5 is engaged and connected with a blade receiving metal fitting as a conductive connecting metal fitting of a base (not shown).
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１３】保護カバー６０は図１、図３、図４に示す
様に構成されている。この保護カバー６０は鍔部６１に
連結柱６２を介して天板６３に接続されている。該鍔部
６１にはチェック棒挿通孔６４及び表示灯穴６６が設け
られ、又、該鍔部６１と天板６３との間には煙流入口６
５が設けられている。該鍔部６１の外周縁には本体１の
係合部４に係止するフックが設けられている。The protective cover 60 is constructed as shown in FIGS. 1, 3 and 4. The protective cover 60 is connected to the flange portion 61 via a connecting column 62 and a top plate 63. The collar portion 61 is provided with a check rod insertion hole 64 and an indicator light hole 66, and the smoke inlet 6 is provided between the collar portion 61 and the top plate 63.
5 are provided. A hook that engages with the engaging portion 4 of the main body 1 is provided on the outer peripheral edge of the collar portion 61.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】次に本実施例の作動について説明する。光
学台ホルダ２０の挿通孔２２ａにリード端子３１を挿入
して発光素子収納部２２にサイド発光式発光素子３０を
収納した後、レンズ３２の支持部３４をレンズ収納部２
３に収納する。この時、発光素子３０とリード端子３６
とは垂直状に保持される。挿通孔２５ａにリード端子３
６を挿入して受光素子収納部２５に受光素子３５を収納
する。この時、受光素子３５とリード端子３１とは垂直
状に保持される。又、シールドケース収納部２８にシー
ルドケース３７を嵌着し、受光素子３５に被せ、シール
ドする。Next, the operation of this embodiment will be described. After inserting the lead terminal 31 into the insertion hole 22a of the optical base holder 20 to store the side light emitting type light emitting element 30 in the light emitting element housing portion 22, the support portion 34 of the lens 32 is attached to the lens housing portion 2.
Store in 3. At this time, the light emitting element 30 and the lead terminal 36
And are held vertically. The lead terminal 3 is inserted into the insertion hole 25a.
6 is inserted and the light receiving element 35 is stored in the light receiving element storage portion 25. At this time, the light receiving element 35 and the lead terminal 31 are held vertically. Further, the shield case 37 is fitted in the shield case housing portion 28, and the light receiving element 35 is covered and shielded.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１７】この時、光学台ホルダ２０の発光素子３０
の当接部３０ａ、レンズ３２の支持部３３の当接部３３
ａ、シールドケース３７の当接部３７ａはそれぞれ光学
台内面の当接部４１ａ、溝部４５、当接部４２ａにより
押圧されるので、それらは正確に所定位置に配設され、
振動などがあってもその位置が狂うことはない。従っ
て、発光素子３０と受光素子３５の光軸Ｌは光学台４０
の底面４０ａに平行な状態を常に維持することができ
る。この光軸Ｌは環状壁４９の先端４９ａとほぼ同じ高
さに位置する。At this time, the light emitting element 30 of the optical bench holder 20
Abutting portion 30a of the lens 32, abutting portion 33 of the supporting portion 33 of the lens 32
a, the contact portion 37a of the shield case 37 is pressed by the contact portion 41a, the groove portion 45, and the contact portion 42a of the inner surface of the optical table, respectively, so that they are accurately arranged at predetermined positions,
Even if there is vibration, its position will not change. Therefore, the optical axes L of the light emitting element 30 and the light receiving element 35 are set to the optical base 40.
It is possible to always maintain a state parallel to the bottom surface 40a of the. The optical axis L is located at substantially the same height as the tip 49a of the annular wall 49.
【手続補正６】[Procedure Amendment 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１９[Name of item to be corrected] 0019
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１９】本体１の支持柱３にプリント基板１０を載
置するとともに突起９の先端をプリント基板１０の孔に
挿入し、挿通孔２、１８に端子ねじ６を挿入する。その
後、該本体１の下面１ｂに刃金具５の固定部５ａを当接
し、前記端子ねじ６を回転させてねじ穴７に装着して固
定する。保護カバー６０を光学台カバー５０に向かって
移動し、フック６７を本体１の係止部４に係合せしめて
固定する。The printed circuit board 10 is placed on the support column 3 of the main body 1, the tips of the projections 9 are inserted into the holes of the printed circuit board 10, and the terminal screws 6 are inserted into the insertion holes 2 and 18. After that, the fixing portion 5a of the blade fitting 5 is brought into contact with the lower surface 1b of the main body 1, and the terminal screw 6 is rotated and mounted in the screw hole 7 and fixed. The protective cover 60 is moved toward the optical base cover 50, and the hook 67 is engaged with the locking portion 4 of the main body 1 to be fixed.
Claims (12)
たプリント基板とが端子ねじにより固定されている本体
と；該基板に係合手段を介して直接固定された光学台
と；該光学台に設けられた一対の発光素子と受光素子
と；前記光学台に配設された環状のラビリンスと；該ラ
ビリンスの外周に設けられた防虫網と；前記光学台の上
面を覆う光学台カバーと；前記基板、光学台、防虫網及
び光学台カバーを覆い、前記本体と係合する煙流入口付
保護カバーと；を備えたことを特徴とする光電式煙感知
器。1. A main body in which a conductive connection fitting provided on a lower surface and a printed circuit board provided on an upper surface are fixed by terminal screws; an optical stand directly fixed to the substrate via an engaging means; A pair of a light emitting element and a light receiving element provided on the optical table; an annular labyrinth provided on the optical table; an insect screen provided on the outer circumference of the labyrinth; and an optical table cover covering the upper surface of the optical table. A photoelectric smoke detector, comprising: a substrate, an optical stand, an insect screen, and a protective cover with a smoke inlet for covering the optical stand cover and engaging with the main body.
たプリント基板とが端子ねじにより固定されてる本体
と；該基板にフックを介して直接固定された光学台と；
該光学台に設けられた一対の発光素子と受光素子と；前
記光学台に配設された環状のラビリンスと；該ラビリン
スの外周に設けられた防虫網と；前記光学台の上面を覆
う光学台カバーと；周壁に煙流入口を有し、かつ、前記
基板、光学台、防虫網及び光学台カバーを覆い、前記本
体と係合する保護カバーと；を備えたことを特徴とする
光電式煙感知器。2. A main body in which a conductive connection fitting provided on a lower surface and a printed circuit board provided on an upper surface are fixed by terminal screws; and an optical stand directly fixed to the substrate via a hook.
A pair of a light emitting element and a light receiving element provided on the optical table; an annular labyrinth provided on the optical table; an insect screen provided on the outer periphery of the labyrinth; and an optical table covering an upper surface of the optical table. A photoelectric smoke comprising: a cover; and a protective cover having a smoke inlet on the peripheral wall, covering the substrate, the optical stand, the insect screen, and the optical stand cover and engaging with the main body. sensor.
いることを特徴とする請求項１、または、２記載の光電
式煙感知器。3. The photoelectric smoke detector according to claim 1, wherein the printed circuit board is provided with a check terminal.
ていることを特徴とする請求項１、２、または、３記載
の光電式煙感知器。4. The photoelectric smoke detector according to claim 1, 2, or 3, wherein the protective cover is provided with a check rod insertion hole.
台と；該光学台の下部に形成され、かつ、下端側に係止
突起を有するフックと；該フックが挿通される複数の挿
通孔を備えたプリント基板と；該挿通孔の周縁に設けら
れ、前記係止突起と係合するプリント基板の係止部と；
を備えたことを特徴とする光電式煙感知器。5. An optical stand having an annular labyrinth provided on an upper part; a hook formed at a lower part of the optical stand and having a locking projection on a lower end side; a plurality of insertion holes through which the hooks are inserted; A printed circuit board including: a locking portion of the printed circuit board, which is provided on the periphery of the insertion hole and engages with the locking projection;
A photoelectric smoke detector characterized by being equipped with.
れる光学台ホルダにおいて、該ホルダが一端部分の発光
素子収納部に発光素子を設け、他端部分の受光素子収納
部に受光素子とシールドケースを設けており、前記光学
台が、下方が開放され、前記発光素子収納部と受光素子
収納部とがそれぞれ挿入される発光部収納部と受光部収
納部と、上面側に設けられた環状のラビリンスと、下部
に下方へ突出して設けられ下端に係止突起を備えた複数
のフックと、を有しており、前記プリント基板が該フッ
クを挿通係合する挿通孔を備えていることを特徴とする
光電式煙感知器。6. An optical stand holder sandwiched and fixed by an optical stand and a printed circuit board, wherein the holder is provided with a light emitting element in a light emitting element housing portion at one end, and a light receiving element and a shield in a light receiving element housing portion at the other end portion. A case is provided, the optical base is opened at the bottom, and a light emitting section housing section and a light receiving section housing section into which the light emitting element housing section and the light receiving element housing section are inserted, respectively, and a ring provided on the upper surface side are provided. Of the labyrinth and a plurality of hooks provided at the lower portion so as to project downward and provided with locking projections at the lower end, and the printed circuit board has an insertion hole through which the hooks are inserted and engaged. A featured photoelectric smoke detector.
に直接固定された暗箱と；該暗箱を構成する光学台と光
学台カバーと；該光学台の底面の周囲に設けられた環状
壁と；前記光学台に設けられ、各光軸が該底面と平行で
かつ該光軸が前記環状壁と略同一高さの位置で互いに交
差する発光素子と受光素子と；前記環状壁の内側に設け
られ、該底面から該環状壁の上方に達し、その上面が前
記光学台カバーにより覆われているラビリンスと；を備
えたことを特徴とする光電式煙感知器。7. A printed circuit board fixed to the main body; a dark box directly fixed to the circuit board; an optical stand and an optical stand cover that form the dark box; an annular wall provided around the bottom surface of the optical stand. A light-emitting element and a light-receiving element provided on the optical table, each optical axis being parallel to the bottom surface and intersecting each other at a position where the optical axis is substantially at the same height as the annular wall; And a labyrinth, which is provided from the bottom surface to reach above the annular wall and whose top surface is covered by the optical bench cover.
学台に形成され、下面側が開放されている受光部収納部
と；該受光部収納部に下側から挿入され、かつ、受光素
子を覆うシールドケースと；を備えたことを特徴とする
光電式煙感知器。8. An optical table cover for covering an upper surface of the optical table; a light receiving section housing formed in the optical table and having a lower surface opened; a light receiving section inserted into the light receiving section from below and receiving light. A photoelectric smoke detector, comprising: a shield case for covering the element.
徴とする請求項６、または８記載の光電式煙感知器。9. The photoelectric smoke detector according to claim 6, wherein the shield case is unpainted.
ることを特徴とする光電式煙感知器。10. A photoelectric smoke detector, wherein the light emitting element is a side light emitting type light emitting element.
光軸に対して直角方向に配設されていることを特徴とす
る請求項１０記載の光電式煙感知器。11. A lead terminal of a side light emitting type light emitting device,
11. The photoelectric smoke detector according to claim 10, wherein the photoelectric smoke detector is arranged in a direction perpendicular to the optical axis.
され、かつ、下面側が開放されている受光部収納部に下
側から挿入されることを特徴とする請求項１０記載の光
電式煙感知器。12. The photoelectric smoke according to claim 10, wherein the side light emitting type light emitting element is formed from an optical stand and is inserted from the lower side into a light receiving section accommodating section whose lower surface side is open. sensor.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13153692A JP3225300B2 (en) | 1992-04-25 | 1992-04-25 | Photoelectric smoke detector |
| DE69317147T DE69317147T2 (en) | 1992-04-25 | 1993-04-13 | Fire alarm |
| EP93105921A EP0569712B1 (en) | 1992-04-25 | 1993-04-13 | Fire detector |
| AU37123/93A AU658996B2 (en) | 1992-04-25 | 1993-04-22 | Fire detector |
| CA002094736A CA2094736C (en) | 1992-04-25 | 1993-04-23 | Fire detector |
| CN93104644A CN1049993C (en) | 1992-04-25 | 1993-04-23 | Fike detector |
| US08/051,689 US5486816A (en) | 1992-04-25 | 1993-04-23 | Fire detector having optic base clamping optic elements to a circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13153692A JP3225300B2 (en) | 1992-04-25 | 1992-04-25 | Photoelectric smoke detector |
Related Child Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05577993A Division JP3208513B2 (en) | 1993-03-16 | 1993-03-16 | Photoelectric smoke detector |
| JP05577693A Division JP3225306B2 (en) | 1993-03-16 | 1993-03-16 | Photoelectric smoke detector |
| JP05577893A Division JP3250026B2 (en) | 1993-03-16 | 1993-03-16 | Photoelectric smoke detector |
| JP05055777A Division JP3120313B2 (en) | 1993-03-16 | 1993-03-16 | Photoelectric smoke detector |
| JP05578093A Division JP3188988B2 (en) | 1993-03-16 | 1993-03-16 | Photoelectric smoke detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05303697A true JPH05303697A (en) | 1993-11-16 |
| JP3225300B2 JP3225300B2 (en) | 2001-11-05 |
Family
ID=15060372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13153692A Expired - Lifetime JP3225300B2 (en) | 1992-04-25 | 1992-04-25 | Photoelectric smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3225300B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5587790A (en) * | 1993-09-07 | 1996-12-24 | Hochiki Corporation | Light scattering type smoke detector having an improved zero-point level |
| JP2009199518A (en) * | 2008-02-25 | 2009-09-03 | Panasonic Electric Works Co Ltd | Smoke detector |
| JP2011215683A (en) * | 2010-03-31 | 2011-10-27 | Nohmi Bosai Ltd | Photoelectric smoke sensor |
| JP2011215678A (en) * | 2010-03-31 | 2011-10-27 | Nohmi Bosai Ltd | Photoelectric smoke sensor |
| CN109932621A (en) * | 2017-12-15 | 2019-06-25 | 中国科学院大连化学物理研究所 | Sparking monitoring interlock inside klystron |
-
1992
- 1992-04-25 JP JP13153692A patent/JP3225300B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5587790A (en) * | 1993-09-07 | 1996-12-24 | Hochiki Corporation | Light scattering type smoke detector having an improved zero-point level |
| JP2009199518A (en) * | 2008-02-25 | 2009-09-03 | Panasonic Electric Works Co Ltd | Smoke detector |
| JP2011215683A (en) * | 2010-03-31 | 2011-10-27 | Nohmi Bosai Ltd | Photoelectric smoke sensor |
| JP2011215678A (en) * | 2010-03-31 | 2011-10-27 | Nohmi Bosai Ltd | Photoelectric smoke sensor |
| CN109932621A (en) * | 2017-12-15 | 2019-06-25 | 中国科学院大连化学物理研究所 | Sparking monitoring interlock inside klystron |
| CN109932621B (en) * | 2017-12-15 | 2024-03-08 | 中国科学院大连化学物理研究所 | Internal sparking monitoring interlocking device of klystron |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3225300B2 (en) | 2001-11-05 |
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