JP2556101Y2 - Fire detector - Google Patents

Fire detector

Info

Publication number
JP2556101Y2
JP2556101Y2 JP1990405838U JP40583890U JP2556101Y2 JP 2556101 Y2 JP2556101 Y2 JP 2556101Y2 JP 1990405838 U JP1990405838 U JP 1990405838U JP 40583890 U JP40583890 U JP 40583890U JP 2556101 Y2 JP2556101 Y2 JP 2556101Y2
Authority
JP
Japan
Prior art keywords
tip
support column
metal cover
heat
seal groove
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
JP1990405838U
Other languages
Japanese (ja)
Other versions
JPH0493390U (en
Inventor
義夫 橋本
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai 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 Nohmi Bosai Ltd filed Critical Nohmi Bosai Ltd
Priority to JP1990405838U priority Critical patent/JP2556101Y2/en
Publication of JPH0493390U publication Critical patent/JPH0493390U/ja
Application granted granted Critical
Publication of JP2556101Y2 publication Critical patent/JP2556101Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)

Description

【考案の詳細な説明】[Detailed description of the invention]

【0001】[0001]

【産業上の利用分野】この考案は熱検出部がシールされ
ている火災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 fire detector in which a heat detecting section is sealed.

【0002】[0002]

【従来の技術】火災感知器の感熱素子の支持柱の先端と
感熱板との間にはバイメタル等の感熱素子が設けられて
いる。この感熱素子が湿気や外気等に触れると火災感知
器の感度が低下してしまう。そこで、従来、前記支持柱
の先端縁と感熱板との間(以下、シール空間という)
に、水平方向から樹脂を充填することにより両者間をシ
ールしている。
2. Description of the Related Art A heat sensitive element such as a bimetal is provided between a tip of a support column of a heat sensitive element of a fire detector and a heat sensitive plate. If this heat sensitive element comes into contact with moisture, outside air, etc., the sensitivity of the fire detector will be reduced. Therefore, conventionally, a space between the tip edge of the support column and the heat-sensitive plate (hereinafter referred to as a seal space).
Then, the space between the two is sealed by filling the resin from the horizontal direction.

【0003】[0003]

【考案が解決しようとする課題】従来例の火災感知器で
は、樹脂を水平方向から充填して前記シール空間をシー
ルしているので、充填作業がしにくい。そのため、作業
能率が良くない。又、樹脂は、支持台の中心側に向かっ
てシール空間に水平方向に注入されるので、わずかの量
の充填剤で該シール空間をむらなく充填するのは困難で
ある。そのため、多量の充填剤をシール空間に注入して
シール漏れを防止している。
In the conventional fire detector, since the resin is filled in the horizontal direction to seal the sealing space, the filling operation is difficult. Therefore, work efficiency is not good. In addition, since the resin is horizontally injected into the sealing space toward the center of the support base, it is difficult to uniformly fill the sealing space with a small amount of filler. Therefore, a large amount of filler is injected into the seal space to prevent leakage of the seal.

【0004】この考案は上記事情に鑑み、シール作業の
能率化を図るとともに少量の充填剤で完全にシールでき
るようにすることを目的とする。
[0004] In view of the above circumstances, it is an object of the present invention to improve the efficiency of the sealing operation and to completely seal with a small amount of filler.

【0005】この考案は、感熱板の金属カバー部を感熱
素子の支持柱の先端に気密に設けた火災感知器におい
て、前記金属カバー部の内面に前記支持柱に嵌着する筒
体部を立設し、該筒体部の先端を上向きにし、該筒体部
の先端と該支持柱の外周面との間に上向きに開口するシ
ール溝を設けたことを特徴とする火災感知器、である。
又、この考案は、感熱素子の支持柱の先端に金属カバー
の筒体部を嵌着し、該金属カバーの筒体部に感熱板の脚
部を嵌着し、前記金属カバーの筒体部の先端を上向きに
し、前記金属カバーの筒体部の先端部と前記支持柱の外
周面との間に上向きに開口するシール溝を設けたことを
特徴とする火災感知器、である。
[0005] In this invention, in a fire detector in which a metal cover portion of a heat-sensitive plate is provided hermetically at the tip of a support column of a heat-sensitive element, a cylindrical portion fitted to the support column is provided on the inner surface of the metal cover portion. A fire groove, wherein a top end of the cylindrical portion is directed upward, and a seal groove that opens upward is provided between the distal end of the cylindrical portion and the outer peripheral surface of the support column. .
In addition, this invention involves fitting a tubular portion of a metal cover to the tip of the support column of the thermal element, fitting a leg of a heat-sensitive plate to the tubular portion of the metallic cover, and removing the tubular portion of the metallic cover. A top end of the metal cover, and a seal groove that opens upward between a front end of the cylindrical portion of the metal cover and an outer peripheral surface of the support column.

【0006】[0006]

【作用】感熱素子の支持柱に金属カバーの筒体部を嵌着
し、該カバーの先端部と該支持柱の外周面との間にシー
ル溝を形成し、該シール溝の開口に上方から樹脂を注入
し、シール溝を埋める。
The cylindrical portion of the metal cover is fitted to the support column of the heat-sensitive element, and a seal groove is formed between the tip of the cover and the outer peripheral surface of the support column. Inject resin and fill the seal groove.

【0007】[0007]

【実施例】この考案の実施例を添付図面により説明する
が、同一図面符号はその名称も機能も同一である。火災
感知器の筐体1の中央部には、バイメタル8等の感熱素
子を保持するための支持柱4が接着されている。この支
持柱4の先端面は断面凹状に形成されている。該支持柱
4の先端に金属カバー5の筒体部5aを嵌着して前記先
端面を覆い、感熱室30を形成する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals have the same names and functions. A support column 4 for holding a heat-sensitive element such as a bimetal 8 is adhered to the center of the housing 1 of the fire detector. The tip end surface of the support column 4 is formed to have a concave cross section. The cylindrical portion 5a of the metal cover 5 is fitted to the distal end of the support column 4 to cover the distal end surface, thereby forming the heat-sensitive chamber 30.

【0008】この感熱室30内には金属カバー5の内面
に当接するバイメタル8と、可動接点ばね9と、該ばね
9に対向する固定接点10と、リード線としての感熱素
子の脚部11が収容されている。金属カバー5の筒体部
5aの先端部5bと支持柱4の外周面4bとの間には、
上向きに開口するシール溝31が形成されている。
In the heat-sensitive chamber 30, a bimetal 8, which contacts the inner surface of the metal cover 5, a movable contact spring 9, a fixed contact 10 facing the spring 9, and legs 11 of the heat-sensitive element as lead wires. Is housed. Between the distal end portion 5b of the cylindrical body portion 5a of the metal cover 5 and the outer peripheral surface 4b of the support column 4,
A seal groove 31 that opens upward is formed.

【0009】この金属カバー5の筒体部5aに感熱板6
の脚部6aを嵌着した後、このシール溝31に例えば光
硬化性の樹脂7を注入する。このシール溝31は上向き
に開口しているので注入しやすく、かつ、少量の樹脂7
で確実にシールすることができる。電気回路を実装した
プリント基板12と、電線接続部分を構成した裏蓋15
とを用意して、裏蓋15に嵌着されている図示しない端
子金具の先端をプリント基板12の所定の位置に半田付
けすることにより、両者を一体化させる。そして、感熱
素子の脚部11が内部に突出した感知器筐体1に、裏蓋
15と一体化させたプリント基板12を所定の位置に対
向させ、プリント基板12に設けられた金具13が脚部
11を挟持するようにはめ込み、ねじ16によりプリン
ト基板12を挟んで裏蓋15を固定する。プロテクタ2
の係合部を感知器筐体1の貫通孔に挿入係止させること
などにより感知器筐体1にプロテクタ2を装着する。
The heat-sensitive plate 6 is attached to the cylindrical body 5a of the metal cover 5.
Then, for example, a photocurable resin 7 is injected into the seal groove 31. Since this seal groove 31 is opened upward, it is easy to inject, and a small amount of resin 7 is used.
Can be reliably sealed. A printed circuit board 12 on which an electric circuit is mounted, and a back cover 15 forming a wire connection portion
Are prepared, and the ends of the terminal fittings (not shown) fitted to the back cover 15 are soldered to predetermined positions on the printed circuit board 12 to integrate them. Then, the printed circuit board 12 integrated with the back cover 15 is opposed to a predetermined position on the sensor housing 1 from which the legs 11 of the heat-sensitive element protrude, and a metal fitting 13 provided on the printed circuit board 12 is attached to the legs. The back cover 15 is fixed so as to sandwich the portion 11, and the printed circuit board 12 is sandwiched by screws 16. Protector 2
The protector 2 is attached to the sensor housing 1 by inserting and engaging the engaging portion of the above into the through hole of the sensor housing 1 or the like.

【0010】なお、図において、14はプリント基板1
2の孔に挿入されているLEDである。
In the drawings, reference numeral 14 denotes the printed circuit board 1.
The LED is inserted in the second hole.

【0011】この考案の実施例は上記に限定されるもの
ではなく、例えば、筒体部を有する金属カバーと脚部を
有する感熱板とを別体に形成し、両者を嵌着する代わり
に、図4に示す様に構成してもよい。即ち、感熱板6の
内面中央部に筒体部6dを形成し、該筒体部6dを感熱
素子の支持柱4の先端部4aに嵌着する。そして、該筒
体部6dの先端部6bと支持柱4の外周面4bとの間に
上方に開口するシール溝31を形成する。このシール溝
31に前記実施例と同様の要領で上方から光硬化性樹脂
7を注入する。
The embodiment of the present invention is not limited to the above. For example, instead of separately forming a metal cover having a cylindrical body portion and a heat-sensitive plate having a leg portion, and fitting them together, It may be configured as shown in FIG. That is, a cylindrical portion 6d is formed at the center of the inner surface of the heat sensitive plate 6, and the cylindrical portion 6d is fitted to the tip 4a of the support column 4 of the thermal element. Then, a seal groove 31 that opens upward is formed between the distal end portion 6b of the cylindrical body portion 6d and the outer peripheral surface 4b of the support column 4. The photocurable resin 7 is injected into the seal groove 31 from above in the same manner as in the above embodiment.

【0012】[0012]

【考案の効果】この考案は以上の様に構成したので、シ
ール溝は上方に向かって開口する。そのため、充填剤を
上方からシール溝にむらなく注入できるので従来例に比
べシール作業が容易になる。又、従来例に比べ使用する
充填剤が少なくても完全にシールすることができる。従
って、従来例より短時間で充填剤が固まるので作業能率
が向上する。
According to the present invention, the seal groove is opened upward. As a result, the filler can be evenly injected into the seal groove from above, so that the sealing operation is easier than in the conventional example. Further, even if the amount of the filler used is smaller than that of the conventional example, the seal can be completely sealed. Accordingly, since the filler hardens in a shorter time than in the conventional example, the work efficiency is improved.

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

【図1】本考案の実施例を示す縦断面図で、図2の要部
拡大図である。
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and is an enlarged view of a main part of FIG. 2;

【図2】本考案の実施例を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing an embodiment of the present invention.

【図3】本考案の実施例を示す平面図である。FIG. 3 is a plan view showing an embodiment of the present invention.

【図4】本考案の他の実施例を示す縦断面図で、図1に
相当する要部拡大図である。
FIG. 4 is a longitudinal sectional view showing another embodiment of the present invention, and is an enlarged view of a main part corresponding to FIG. 1;

【符号の説明】[Explanation of symbols]

1 …… 火災感知器の筐体 4 …… 感熱素子の支持柱 5 …… 金属カバー 6 …… 感熱板 7 …… 樹脂 8 …… バイメタル 31 …… シール溝 DESCRIPTION OF SYMBOLS 1 ... Fire detector housing 4 ... Support column of thermal element 5 ... Metal cover 6 ... Thermal plate 7 ... Resin 8 ... Bimetal 31 ... Seal groove

Claims (3)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 感熱板の金属カバー部を感熱素子の支持
柱の先端に気密に設けた火災感知器において; 前記金属カバー部の内面に前記支持柱に嵌着する筒体部
を立設し、該筒体部の先端を上向きにし、該体部の先
端と該支持柱の外周面との間に上向きに開口するシール
溝を設けたことを特徴とする火災感知器。
1. A fire detector in which a metal cover portion of a heat-sensitive plate is hermetically provided at a tip of a support column of a heat-sensitive element; a tubular portion fitted to the support column is erected on an inner surface of the metal cover portion. and upwards the tip of the tube body portion, the fire detector, characterized in that a seal groove opening upward between the tip and the outer peripheral surface of the support column of the cylindrical body portion.
【請求項2】 感熱素子の支持柱の先端に金属カバーの
筒体部を嵌着し、該金属カバーの筒体部に感熱板の脚部
を嵌着し、前記金属カバーの筒体部の先端部の先端を上
向きにし、前記金属カバーの筒体部の先端部と前記支持
柱の外周面との間に上向きに開口するシール溝を設けた
ことを特徴とする火災感知器。
2. A tubular body of a metal cover is fitted to a tip of a support column of the heat-sensitive element, and a leg of a heat-sensitive plate is fitted to a tubular body of the metal cover. A fire sensor, wherein a tip of a tip part is directed upward, and a seal groove which opens upward is provided between a tip part of a cylindrical body part of the metal cover and an outer peripheral surface of the support column.
【請求項3】 筐体の中央部に接着され、感熱素子を保
持する支持柱; 該支持柱の先端に嵌着される金属カバーの筒体部; 該金属カバーの筒体部に嵌着される感熱板の脚部; 前記金属カバーの筒体部の先端部と前記支持柱の外周面
との間に設けられる上向きに開口したシール溝; 該シール溝に注入されるシール用樹脂; 前記筐体内部に突出した前記感熱素子の脚部; 該脚部を挟持する金属を有するプリント基板; 前記筐体の内面に固定され、前記筐体との間に該プリン
ト基板を挟んで固定する裏蓋; とを備えたことを特徴とする火災感知器。
3. A supporting column adhered to a central portion of the housing and holding the heat-sensitive element; a cylindrical portion of a metal cover fitted to a tip of the supporting column; An upwardly-opening seal groove provided between a distal end portion of the cylindrical portion of the metal cover and an outer peripheral surface of the support column; a sealing resin injected into the seal groove; A leg portion of the thermosensitive element protruding into the body; a printed circuit board having a metal sandwiching the leg portion; a back cover fixed to an inner surface of the housing and fixing the printed circuit board to the housing. A fire detector comprising:
JP1990405838U 1990-12-28 1990-12-28 Fire detector Expired - Lifetime JP2556101Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990405838U JP2556101Y2 (en) 1990-12-28 1990-12-28 Fire detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990405838U JP2556101Y2 (en) 1990-12-28 1990-12-28 Fire detector

Publications (2)

Publication Number Publication Date
JPH0493390U JPH0493390U (en) 1992-08-13
JP2556101Y2 true JP2556101Y2 (en) 1997-12-03

Family

ID=31883202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990405838U Expired - Lifetime JP2556101Y2 (en) 1990-12-28 1990-12-28 Fire detector

Country Status (1)

Country Link
JP (1) JP2556101Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2582217Y2 (en) * 1992-09-11 1998-09-30 能美防災株式会社 Fire detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5458611A (en) * 1977-10-19 1979-05-11 Kobe Steel Ltd Manufacture of sintered ore
JPS6011709Y2 (en) * 1980-09-11 1985-04-17 住友電気工業株式会社 metal drum

Also Published As

Publication number Publication date
JPH0493390U (en) 1992-08-13

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