JP3627466B2 - Fire detector - Google Patents

Fire detector Download PDF

Info

Publication number
JP3627466B2
JP3627466B2 JP23372497A JP23372497A JP3627466B2 JP 3627466 B2 JP3627466 B2 JP 3627466B2 JP 23372497 A JP23372497 A JP 23372497A JP 23372497 A JP23372497 A JP 23372497A JP 3627466 B2 JP3627466 B2 JP 3627466B2
Authority
JP
Japan
Prior art keywords
fire detector
plate
mounting
ceiling
opening
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.)
Expired - Lifetime
Application number
JP23372497A
Other languages
Japanese (ja)
Other versions
JPH1173581A (en
Inventor
祐史 西口
博隆 濱口
剛嗣 和田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP23372497A priority Critical patent/JP3627466B2/en
Publication of JPH1173581A publication Critical patent/JPH1173581A/en
Application granted granted Critical
Publication of JP3627466B2 publication Critical patent/JP3627466B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Fire Alarms (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、埋め込み取付に適する火災感知器に関する。
【0002】
【従来の技術】
従来の火災感知器は図5に示すように、感知器ベース50と、感知器ヘッド80と、化粧プレート100とで構成されている。
【0003】
感知器ベース50は図6に示すように、ボディ51と、プリント基板52と、カバー53とを有し、天井等からの信号兼電源線を接続する端子部として端子カバー54と鎖錠ばね55,55と端子板56,56とを有している。また感知器ヘッド80の端子板86,86に電気接続するための端子部として端子板57,57と接触ばね58,58とこれらをボディ51に固定するねじ59,59とを有している。更に端子板56,56とプリント基板52の間を接続する接続ピン60,60を有し、またボディ51から下方へ突出する動作確認灯61とその保護カバー62とを有している。
【0004】
また感知器ヘッド80としては、煙感知器の場合も略同外径、同高さとなるが、図7では熱感知器とした場合の例で示す。感知器ヘッド80はボディ81と、パッキン82と、プリント基板83と、中カバー84と、プロテクタ85とを有する。更に感知器ベース50側に接続するための端子板86,86と端子板86,86を固定するねじ87,87と、接続ピン88,88、接触ピン89,89とを有し、プリント基板83上には半導体式の熱検出素子であるサーミスタ素子90が突出形成している。
【0005】
更に感知器ベース50は、天井板への取り付け部材として、図8に示すように、はさみ金具65,65と、ばね66,66と、止め板67,67と、長ねじ68,68とを、感知器ベース50のつば部63の孔64,64から立設している。そして、中空の天井板に感知器ベース50を取り付けるときには、図9に示すように、はさみ金具65,65を感知器ベース50の上に載置した状態で、天井板の開口から挿入し、はさみ金具65,65を感知器ベース50の上から解放して、長ねじ68,68を回転させて、天井板をはさみ金具65,65とつば部63で挟持して、感知器ベース50を天井板に固定している。
【0006】
化粧プレート100は、天井への取り付けに使用する長ねじ68,68やねじ70,70を隠すために、被着する。
【0007】
また、この感知器ベース50を、天井に埋設したボックス69に取り付ける場合は図10に示すように、ねじ70,70と、つば部63の孔71,71又は図8に示す孔64,64を使用して、ボックス69のねじ孔73,73に螺着して取り付ける。
【0008】
【発明が解決しようとする課題】
しかしながら、従来の火災感知器は、前記のように図5乃至図10に示す構造となっているため、感熱部である感知器ヘッド80と、天井板との取り付け、電線の接続、感知器ヘッド80との機械的保持及び電気的接続を目的とした感知器ベース50と、天井への取り付けに使用するねじを隠す化粧プレート100とが必要となっており、感知器ヘッド80、感知器ベース50、化粧プレート100の3点をセットとして使用する必要があり、施工にも時間がかかり手間であった。
【0009】
更に、上記の化粧プレート100は、中空天井に直接取り付ける場合、及びボックス69への取り付け場合ともに、長ねじ68,68、ねじ70,70を使用するため、これを隠すための化粧プレート100として必須のものとなっていた。
【0010】
本発明は上記の問題点を解決するためになされたものであり、その目的とするところは、部品点数の削減と、施工時間を短縮できる火災感知器を提供することにある。
【0011】
【課題を解決するための手段】
前記の課題を解決するために、請求項1記載の発明では、感知部のプロテクタと、化粧プレート機能を有するつば部と、前記つば部より細径に形成しかつ信号処理回路を内装するケース部とを一体に形成する。
【0012】
そして、請求項1記載の発明では、つば部より上方側に前記ケース部を挟むように少なくとも2つの互いの上側先端が近づくように折り曲げられた取付ばねを付設し、前記取付けばねは天井板に形成した開口縁に挿通されて横方やや下方に押しつける反発力により当接し、同取付ばねとつば部上面との間に天井板が挟み込まれた状態とされる。
【0013】
請求項記載の発明では、中央にケース部を挿通する開口を有し端部にねじ挿通孔とを有する略円板状の取付プレートと、前記取付プレートのねじ挿通孔を覆いかつ中央に感知部のプロテクタを挿通する開口を有する略円板状の化粧プレートとを具備する。
【0014】
【発明の実施の形態】
本発明の一実施形態を図1乃至図4に基づいて説明する。図1は火災感知器の本体の分解斜視図、図2は本体と取付ばねを示す分解斜視図、図3は中空天井に火災感知器を取り付ける状態を示す斜視図、図4は埋込ボックスに火災感知器を取り付ける状態を示す分解斜視図である。
【0015】
火災感知器の本体1は、図1に示すように、ボディ10と、プロテクタ20とプリント基板25と、カバー30と、端子部40とを一体に組み立てて構成している。
【0016】
ボディ10は、化粧プレート機能を兼ねるつば部11と、ケース部12とを有している。つば部11は、天井板の開口Aを隠すためと、火災感知器を天井板に挟持する部材の機能を有する。ケース部12は略円筒状で、上面が開口し、下面側にもサーミスタ素子26をプロテクタ20側へ挿通させる孔13を有している。ボディ10のケース部12の中には信号処理回路を内装するプリント基板25と、サーミスタ素子26、動作確認灯用の光ガイド27とが配設される。
【0017】
プロテクタ20は、係合突起21,21によりボディ10の対応箇所に係止され、熱検出素子であるサーミスタ素子26を外力から保護する。このプロテクタ20は、熱感知器の場合を示したが、煙感知器とする場合には、図示しないが、プロテクタ20の内側にリング状の防虫網を設け、その内部のラビリンス内に発光素子と受光素子とを配設した煙検知室が形成される。
【0018】
プリント基板25には上面にアドレス設定部28と、下面に前記サーミスタ素子26が接続され、光ガイド27がプリント基板25とケース部12の間に挟持される。光ガイド27は、プリント基板25下面に設けた動作確認用の発光ダイオード(図示せず)の光を、火災感知器の下面から見える位置へ導出する。
【0019】
カバー30は、ケース部12の開口を覆うものであり、上面に設けた2箇所の孔31,31に、ねじ32,32を挿通し、ねじ32,32をケース部12の上面に設けたねじ孔14,14にねじ止めすることにより固定される。カバー30にはアドレス設定部28に対応する位置に設定用孔33を設けている。この設定用孔33には、アドレスカバー34が設けてあり、アドレスカバー34はアドレスカバー34の孔34aを利用して、孔31とねじ孔14とねじ32を兼用してカバー30に固定される。
【0020】
端子部40は、端子カバー41と、端子板42,42と、鎖錠ばね43,43と、カバー30の上面に形成したケース部35,35とで構成している。端子部40は、天井上より配線される信号線や電源線を、速結方式により結線することができる。
【0021】
次に、図2に基づいて、取付ばね15,15について説明する。取付ばね15,15は、弾性のある板材で形成され、2枚の取付ばね15,15それぞれにカバー30へ係止するための係止部15a、ケース部12へ係止するための係止部15b,15b及び係止部15cとを有し、更に、天井板を反発力により挟持する挟持部15dと、挟持部15dの先端には屈曲部15eを有している。
【0022】
この取付ばね15,15に対応して、カバー30には、係止部36,36が設けてある。また、ケース部12には突出片16,16との間に、係止溝17,17を設けている。また係止溝17,17の間の壁面に係合凹部18が形成してある。そして取付ばね15の係止部15aが係止部36,36に係止され、また係止部15b,15bが係止溝17,17に嵌まり込み、係止部15cが係合凹部18に係合することにより、取付ばね15はボディ10に取着される。取付ばね15,15は、ボディ10のケース部12の左右に1枚づつ取着される。
【0023】
次に、図3に基づいて中空天井への火災感知器の取付方法を説明する。天井面には、予めボディ10のケース部12及びカバー30よりも少しだけ大きい円形の開口Aをあけておく。次に手指等で2枚の取付ばね15,15を上側で互いに狭めて、前記開口Aを挿通させる。火災感知器の本体1を天井面に少し押しつけて、つば部11の上面を天井面に当接させれば、取付が完了する。このとき取付ばね15,15は自らの反発力により天井板の開口Aの上側開口縁を横方やや下方に押しつけて、つば部11上面との間に天井板を挟み込んだ状態となっている。つば部11の下面にはねじ等が露出しないので従来の化粧プレート100を取り付ける必要がない。またこの取付ばね15,15による取付方法であると、ねじ等を使用しないので速やかに火災感知器を取り付けることができる。
【0024】
一方、特殊な取付方法ではあるが、天井内に埋め込まれた埋込ボックス69に、火災感知器の本体1を取り付ける場合は、取付プレート45と化粧プレート48を使用する。取付プレート45は、孔45a,45a、孔45b,45bを有し、中央に開口46を有している。開口46はボディ10のケース部12及びカバー30よりも少し大きめの円形形状で、取付ばね15,15も挿通可能な大きさにしてある。化粧プレート48の中央には開口49が設けてあり、プロテククタ20の外径よりも僅かに大きく形成してありプロテククタ20を挿通することができる。また化粧プレート48は、取付プレート45に係止手段により係止される。
【0025】
火災感知器の本体1を上記の埋込ボックス69に取り付ける手順を説明する。まず取付プレート45をねじ70,70により埋込ボックス69に取り付ける。次に本体1の取付ばね15,15を、取付プレート45の開口46内へ挿通する。取付ばね15,15の反発力により、取付ばね15,15は埋込ボックス69の内壁又は取付プレート45の開口46の開口縁に当接して、火災感知器の本体1は固定される。次に化粧プレート48を取付プレート45に係止する。尚、化粧プレート48を強固に取付プレート45に係止するようにすれば、取付ばね15,15を使用しなくても、本体1は、つば部11が取付プレート45と化粧プレート48に挟持されることにより固定される。
【0026】
尚、この取付プレート45と化粧プレート48を使用すれば、以下のような場合に中空天井に火災感知器を取り付けることも可能である。すなわち、中空天井の開口作業において、誤ってやや大きすぎる開口をあけてしまい、取付ばね15,15では取り付かなくなったときに、天井面の前記開口の両側にねじ孔を加工して、取付プレート45を孔45a,45aを使用してねじ70,70で取り付け、本体1を取付ばね15,15で取り付け、ねじ70,70の目隠しとして化粧プレート48を使用することにより、火災感知器を中空天井に取り付けることができる。
【0027】
【発明の効果】
請求項1記載の発明によれば、従来の感知器ヘッドと感知器ベースを一体に形成することができ、火災感知器の構成点数を削減することができるという効果を奏する。
【0028】
しかも、請求項記載の発明によれば、上記の効果に加えて、取付ばねを使用して中空天井に火災感知器を取り付けることができ、取付け用のねじを用いないので、ねじの目隠し用の化粧プレートを必要としない。また取付ばねを使用しているので、従来のはさみ金具、長ねじ、及びばね等が不要となり部品数を削減することができ、更に取付ばねにより速やかに火災感知器を取り付けることができるという効果を奏する。
【0029】
請求項記載の発明によれば、請求項記載の発明の効果に加えて、埋込ボックスに火災感知器を取り付ける場合でも、取付プレートと化粧プレートを使用することにより、本発明の火災感知器の本体を取り付けることができるという効果を奏する。
【図面の簡単な説明】
【図1】本発明の一実施形態の火災感知器の本体の分解斜視図である。
【図2】同上の本体と取付ばねを示す分解斜視図である。
【図3】中空天井に火災感知器を取り付ける状態を示す斜視図である。
【図4】埋込ボックスに火災感知器を取り付ける状態を示す分解斜視図である。
【図5】従来例の火災感知器の分解斜視図である。
【図6】同上の火災感知器の本体の分解斜視図である。
【図7】同上の火災感知器の感知器ヘッドの分解斜視図である。
【図8】同上の火災感知器の感知器ベースの分解斜視図である。
【図9】同上の火災感知器を中空天井に取り付ける状態を示す部分断面図である。
【図10】同上の火災感知器を埋込ボックスに取り付ける状態を示す分解斜視図である。
【符号の説明】
1 本体
11 つば部
12 ケース部
15,15 取付ばね
20 プロテクタ
25 信号処理回路(プリント基板)
26 感知部(サーミスタ素子)
45 取付プレート
45a ねじ挿通孔
46 開口(取付プレート)
48 化粧プレート
49 開口(化粧プレート)
A 開口(天井)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire detector suitable for embedded mounting.
[0002]
[Prior art]
As shown in FIG. 5, the conventional fire sensor includes a sensor base 50, a sensor head 80, and a decorative plate 100.
[0003]
As shown in FIG. 6, the sensor base 50 has a body 51, a printed circuit board 52, and a cover 53, and a terminal cover 54 and a lock spring 55 as terminal portions for connecting a signal and power line from the ceiling or the like. , 55 and terminal plates 56, 56. Further, terminal plates 57 and 57, contact springs 58 and 58, and screws 59 and 59 for fixing these to the body 51 are provided as terminal portions for electrical connection to the terminal plates 86 and 86 of the sensor head 80. Furthermore, it has the connection pins 60 and 60 which connect between the terminal boards 56 and 56 and the printed circuit board 52, and has the operation check lamp 61 which protrudes below from the body 51, and its protective cover 62.
[0004]
Further, as the sensor head 80, the smoke sensor has substantially the same outer diameter and the same height, but FIG. 7 shows an example of a heat sensor. The sensor head 80 includes a body 81, a packing 82, a printed circuit board 83, an intermediate cover 84, and a protector 85. Further, terminal boards 86 and 86 for connection to the sensor base 50 side, screws 87 and 87 for fixing the terminal boards 86 and 86, connection pins 88 and 88, and contact pins 89 and 89 are provided. A thermistor element 90, which is a semiconductor-type heat detection element, protrudes from above.
[0005]
Further, as shown in FIG. 8, the sensor base 50 includes scissors 65 and 65, springs 66 and 66, stop plates 67 and 67, and long screws 68 and 68 as attachment members to the ceiling plate. The sensor base 50 is erected from the holes 64 and 64 of the collar portion 63 of the sensor base 50. Then, when the sensor base 50 is attached to the hollow ceiling plate, as shown in FIG. 9, the scissors fittings 65 and 65 are placed on the sensor base 50 and inserted from the opening of the ceiling plate. The metal fittings 65, 65 are released from the top of the sensor base 50, the long screws 68, 68 are rotated, the ceiling plate is sandwiched between the metal fittings 65, 65 and the collar portion 63, and the sensor base 50 is attached to the ceiling plate. It is fixed to.
[0006]
The decorative plate 100 is attached to conceal the long screws 68 and 68 and the screws 70 and 70 used for attachment to the ceiling.
[0007]
Further, when the sensor base 50 is attached to the box 69 embedded in the ceiling, as shown in FIG. 10, screws 70 and 70 and holes 71 and 71 of the collar portion 63 or holes 64 and 64 shown in FIG. In use, the screw holes 73 and 73 of the box 69 are screwed and attached.
[0008]
[Problems to be solved by the invention]
However, since the conventional fire sensor has the structure shown in FIGS. 5 to 10 as described above, the sensor head 80 which is a heat sensitive part and the ceiling plate are attached, the connection of electric wires, the sensor head. Sensor base 50 for the purpose of mechanical holding and electrical connection with 80 and a decorative plate 100 for hiding screws used for mounting on the ceiling are required. Sensor head 80, sensor base 50 are required. It is necessary to use the three points of the decorative plate 100 as a set, and the construction is time consuming and laborious.
[0009]
Furthermore, since the above-mentioned decorative plate 100 uses the long screws 68 and 68 and the screws 70 and 70 both when directly attached to the hollow ceiling and when attached to the box 69, it is essential as a decorative plate 100 for concealing this. It was a thing.
[0010]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fire detector capable of reducing the number of parts and shortening the construction time.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the invention according to claim 1, a protector for the sensing part, a collar part having a decorative plate function, and a case part that is formed with a diameter smaller than that of the collar part and includes a signal processing circuit. And are integrally formed.
[0012]
According to the first aspect of the present invention, at least two mounting springs that are bent so that the upper ends of the cases approach each other so as to sandwich the case portion above the collar portion are attached, and the mounting spring is attached to the ceiling plate. The ceiling plate is sandwiched between the mounting spring and the top surface of the collar portion by being brought into contact with the repulsive force that is inserted through the formed opening edge and pressed sideways or slightly downward .
[0013]
In the invention according to claim 2 , a substantially disk-shaped mounting plate having an opening through which the case portion is inserted at the center and a screw insertion hole at the end, and the screw insertion hole of the mounting plate is covered and sensed at the center. A substantially disc-shaped decorative plate having an opening through which the protector of the portion is inserted.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 is an exploded perspective view of the main body of the fire detector, FIG. 2 is an exploded perspective view showing the main body and the mounting spring, FIG. 3 is a perspective view showing a state where the fire detector is attached to the hollow ceiling, and FIG. It is a disassembled perspective view which shows the state which attaches a fire sensor.
[0015]
As shown in FIG. 1, the main body 1 of the fire detector is configured by integrally assembling a body 10, a protector 20, a printed board 25, a cover 30, and a terminal portion 40.
[0016]
The body 10 includes a collar portion 11 that also functions as a decorative plate, and a case portion 12. The collar part 11 has the function of a member for hiding the opening A of the ceiling panel and for holding the fire detector between the ceiling panel. The case portion 12 has a substantially cylindrical shape, an upper surface that is open, and a hole 13 through which the thermistor element 26 is inserted into the protector 20 side. In the case portion 12 of the body 10, a printed circuit board 25 that houses a signal processing circuit, a thermistor element 26, and a light guide 27 for an operation check lamp are disposed.
[0017]
The protector 20 is locked to the corresponding portion of the body 10 by the engagement protrusions 21 and 21, and protects the thermistor element 26, which is a heat detection element, from external force. Although this protector 20 is shown as a heat sensor, when it is a smoke sensor, a ring-shaped insect net is provided inside the protector 20 and a light-emitting element is installed in the labyrinth inside the protector 20. A smoke detection chamber in which the light receiving element is disposed is formed.
[0018]
An address setting unit 28 is connected to the upper surface of the printed circuit board 25, and the thermistor element 26 is connected to the lower surface, and a light guide 27 is sandwiched between the printed circuit board 25 and the case unit 12. The light guide 27 guides light of a light emitting diode (not shown) for operation confirmation provided on the lower surface of the printed circuit board 25 to a position where it can be seen from the lower surface of the fire detector.
[0019]
The cover 30 covers the opening of the case portion 12. The screws 32, 32 are inserted into the two holes 31, 31 provided on the upper surface, and the screws 32, 32 are provided on the upper surface of the case portion 12. The holes 14 and 14 are fixed by screwing. The cover 30 is provided with a setting hole 33 at a position corresponding to the address setting unit 28. The setting hole 33 is provided with an address cover 34, and the address cover 34 is fixed to the cover 30 by using the hole 34 a of the address cover 34 and using the hole 31, the screw hole 14, and the screw 32. .
[0020]
The terminal portion 40 includes a terminal cover 41, terminal plates 42 and 42, lock springs 43 and 43, and case portions 35 and 35 formed on the upper surface of the cover 30. The terminal unit 40 can connect signal lines and power lines wired from above the ceiling by a fast connection method.
[0021]
Next, the attachment springs 15 and 15 will be described with reference to FIG. The attachment springs 15, 15 are formed of an elastic plate material, and an engagement portion 15 a for engaging the cover 30 with each of the two attachment springs 15, 15 and an engagement portion for engaging the case portion 12. 15b, 15b, and a locking portion 15c, a clamping portion 15d for clamping the ceiling plate by a repulsive force, and a bending portion 15e at the tip of the clamping portion 15d.
[0022]
Corresponding to the attachment springs 15, 15, the cover 30 is provided with locking portions 36, 36. The case 12 is provided with locking grooves 17 and 17 between the protruding pieces 16 and 16. An engaging recess 18 is formed in the wall surface between the locking grooves 17 and 17. Then, the locking portion 15a of the mounting spring 15 is locked to the locking portions 36, 36, the locking portions 15b, 15b are fitted into the locking grooves 17, 17, and the locking portion 15c is set to the engaging recess 18. By engaging, the attachment spring 15 is attached to the body 10. The attachment springs 15 and 15 are attached to the left and right of the case portion 12 of the body 10 one by one.
[0023]
Next, a method for attaching the fire detector to the hollow ceiling will be described with reference to FIG. A circular opening A that is slightly larger than the case portion 12 and the cover 30 of the body 10 is opened in advance on the ceiling surface. Next, the two attachment springs 15 and 15 are narrowed to the upper side with fingers or the like, and the opening A is inserted. When the main body 1 of the fire detector is slightly pressed against the ceiling surface and the upper surface of the collar portion 11 is brought into contact with the ceiling surface, the installation is completed. At this time, the mounting springs 15 and 15 are in a state in which the ceiling plate is sandwiched between the upper surface of the flange portion 11 by pressing the upper opening edge of the opening A of the ceiling plate to the side and slightly downward by its own repulsive force. Since a screw or the like is not exposed on the lower surface of the collar portion 11, it is not necessary to attach the conventional decorative plate 100. Also, with the mounting method using the mounting springs 15 and 15, since no screws or the like are used, the fire detector can be quickly mounted.
[0024]
On the other hand, although it is a special attachment method, when attaching the main body 1 of a fire detector to the embedding box 69 embedded in the ceiling, the attachment plate 45 and the decorative plate 48 are used. The mounting plate 45 has holes 45a and 45a, holes 45b and 45b, and an opening 46 in the center. The opening 46 has a circular shape that is slightly larger than the case portion 12 and the cover 30 of the body 10 and is sized so that the mounting springs 15 and 15 can be inserted therethrough. An opening 49 is provided in the center of the decorative plate 48 and is formed slightly larger than the outer diameter of the protector 20 so that the protector 20 can be inserted therethrough. The decorative plate 48 is locked to the mounting plate 45 by locking means.
[0025]
A procedure for attaching the main body 1 of the fire detector to the embedded box 69 will be described. First, the attachment plate 45 is attached to the embedding box 69 with screws 70 and 70. Next, the attachment springs 15 and 15 of the main body 1 are inserted into the openings 46 of the attachment plate 45. Due to the repulsive force of the mounting springs 15, 15, the mounting springs 15, 15 abut against the inner wall of the embedded box 69 or the opening edge of the opening 46 of the mounting plate 45, and the fire detector body 1 is fixed. Next, the decorative plate 48 is locked to the mounting plate 45. If the decorative plate 48 is firmly locked to the mounting plate 45, the collar portion 11 of the main body 1 is sandwiched between the mounting plate 45 and the decorative plate 48 without using the mounting springs 15 and 15. It is fixed by doing.
[0026]
If the mounting plate 45 and the decorative plate 48 are used, a fire detector can be mounted on the hollow ceiling in the following cases. That is, in the opening operation of the hollow ceiling, when an opening that is slightly too large is accidentally opened and cannot be attached by the mounting springs 15 and 15, screw holes are formed on both sides of the opening on the ceiling surface, and the mounting plate 45. Are mounted with screws 70, 70 using holes 45a, 45a, the main body 1 is mounted with mounting springs 15, 15, and the decorative plate 48 is used as a blindfold for the screws 70, 70, so that the fire detector is attached to the hollow ceiling. Can be attached.
[0027]
【The invention's effect】
According to the first aspect of the present invention, the conventional sensor head and the sensor base can be integrally formed, and the number of components of the fire sensor can be reduced.
[0028]
Moreover, according to the first aspect of the present invention, in addition to the above effect, the fire detector can be attached to the hollow ceiling using an attachment spring, and no mounting screw is used. No need for a decorative plate. In addition, since a mounting spring is used, the conventional scissors, long screws, springs, etc. are not required, the number of parts can be reduced, and the fire detector can be quickly mounted by the mounting spring. Play.
[0029]
According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1, even when the fire detector is attached to the embedded box, the fire detection of the present invention is achieved by using the mounting plate and the decorative plate. There is an effect that the main body of the vessel can be attached.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main body of a fire detector according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing the main body and the mounting spring.
FIG. 3 is a perspective view showing a state in which a fire detector is attached to a hollow ceiling.
FIG. 4 is an exploded perspective view showing a state in which a fire detector is attached to the embedded box.
FIG. 5 is an exploded perspective view of a conventional fire detector.
FIG. 6 is an exploded perspective view of the main body of the fire detector.
FIG. 7 is an exploded perspective view of a sensor head of the fire sensor.
FIG. 8 is an exploded perspective view of the sensor base of the above-described fire sensor.
FIG. 9 is a partial cross-sectional view showing a state where the above-described fire detector is attached to the hollow ceiling.
FIG. 10 is an exploded perspective view showing a state in which the fire detector is attached to the embedded box.
[Explanation of symbols]
1 Body 11 Collar 12 Case 15, 15 Mounting Spring 20 Protector 25 Signal Processing Circuit (Printed Circuit Board)
26 Sensor (Thermistor element)
45 Mounting plate 45a Screw insertion hole 46 Opening (Mounting plate)
48 makeup plate 49 opening (decoration plate)
A Opening (ceiling)

Claims (2)

感知部のプロテクタと、化粧プレート機能を有するつば部と、前記つば部より細径に形成しかつ信号処理回路を内装するケース部とを一体に形成してなる火災感知器において、つば部より上方側に前記ケース部を挟むように少なくとも2つの互いの上側先端が近づくように折り曲げられた取付ばねを付設し、前記取付ばねは天井板に形成した開口縁に挿通されて横方やや下方に押しつける反発力により当接し、同取付ばねとつば部上面との間に天井板が挟み込まれた状態とされることを特徴とする火災感知器。In a fire detector formed integrally with a protector of a sensing part, a collar part having a decorative plate function, and a case part having a diameter smaller than that of the collar part and incorporating a signal processing circuit, it is located above the collar part. At least two mounting springs that are bent so that the upper ends of the case portions are close to each other are provided on the side , and the mounting springs are inserted through the opening edge formed in the ceiling plate and pressed slightly to the side. A fire detector, which is brought into contact with a repulsive force and has a ceiling plate sandwiched between the mounting spring and the upper surface of the flange portion. 請求項1記載の火災感知器において、中央にケース部を挿通する開口を有し端部にねじ挿通孔とを有数する略円板状の取付プレートと、前記取付プレートのねじ挿通孔を覆いかつ中央に感知部のプロテクタを挿通する開口を有する略円板状の化粧プレートとを具備することを特徴とする火災感知器。The fire detector according to claim 1, wherein the mounting plate has a substantially disc-shaped mounting plate having an opening through which the case portion is inserted at the center and a screw insertion hole at the end, and covers the screw insertion hole of the mounting plate; A fire detector comprising a substantially disc-shaped decorative plate having an opening through which a protector of the sensing unit is inserted in the center.
JP23372497A 1997-08-29 1997-08-29 Fire detector Expired - Lifetime JP3627466B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23372497A JP3627466B2 (en) 1997-08-29 1997-08-29 Fire detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23372497A JP3627466B2 (en) 1997-08-29 1997-08-29 Fire detector

Publications (2)

Publication Number Publication Date
JPH1173581A JPH1173581A (en) 1999-03-16
JP3627466B2 true JP3627466B2 (en) 2005-03-09

Family

ID=16959582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23372497A Expired - Lifetime JP3627466B2 (en) 1997-08-29 1997-08-29 Fire detector

Country Status (1)

Country Link
JP (1) JP3627466B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102314743A (en) * 2010-06-30 2012-01-11 骊住日探株式会社 Hot cigarette combined type detector

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3608041B2 (en) * 2000-03-31 2005-01-05 松下電工株式会社 Fire detector
JP4700170B2 (en) * 2000-06-16 2011-06-15 ミサワホーム株式会社 Fire alarm
JP5175150B2 (en) * 2008-09-16 2013-04-03 株式会社バッファロー antenna
JP6681130B2 (en) * 2015-12-28 2020-04-15 能美防災株式会社 Fire detector
JP6396524B2 (en) * 2017-02-27 2018-09-26 能美防災株式会社 Transmitter adapter and transmitter mounting method using the transmitter adapter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102314743A (en) * 2010-06-30 2012-01-11 骊住日探株式会社 Hot cigarette combined type detector
CN102314743B (en) * 2010-06-30 2015-06-24 日探株式会社 Combined heat and smoke detector

Also Published As

Publication number Publication date
JPH1173581A (en) 1999-03-16

Similar Documents

Publication Publication Date Title
US4887073A (en) Ceiling mounted fire detector assembly
JP3627466B2 (en) Fire detector
JP3328823B2 (en) Fire detector
JP4382493B2 (en) Thermally responsive switch
JP3849721B2 (en) Fire detector
JP4284533B2 (en) Wall-mounted fire alarm
JP3680475B2 (en) sensor
JP2002109650A (en) Fire detector
JP3221165B2 (en) Sensor base
JP4741912B2 (en) Disaster prevention equipment
JPH08180273A (en) Fire sensor
KR100310754B1 (en) Fixed fire detector
US10422511B1 (en) Covers for emergency egress light fixtures
CN217503438U (en) Fireproof panel light
JPH0453526B2 (en)
JPS6332665Y2 (en)
JP2577762Y2 (en) Indoor mounted detector
JP2565208Y2 (en) Radiant fire detector
JP2575186Y2 (en) Indoor mounted detector
JP3699891B2 (en) Fire detector
JP4047971B2 (en) Catch ceiling
JP3921656B2 (en) Fire detector
JP3527887B2 (en) Highly airtight lighting device and tubular cover for the device
JP2000123630A (en) Ceiling luminaire
JP2602227Y2 (en) Light receiving block

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040405

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040420

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040601

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20040817

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041015

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20041020

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20041116

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20041129

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071217

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081217

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081217

Year of fee payment: 4

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081217

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091217

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091217

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101217

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111217

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121217

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121217

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131217

Year of fee payment: 9

EXPY Cancellation because of completion of term