JP3680475B2 - sensor - Google Patents

sensor Download PDF

Info

Publication number
JP3680475B2
JP3680475B2 JP03822097A JP3822097A JP3680475B2 JP 3680475 B2 JP3680475 B2 JP 3680475B2 JP 03822097 A JP03822097 A JP 03822097A JP 3822097 A JP3822097 A JP 3822097A JP 3680475 B2 JP3680475 B2 JP 3680475B2
Authority
JP
Japan
Prior art keywords
sensor
fitting
base
terminal
predetermined
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
JP03822097A
Other languages
Japanese (ja)
Other versions
JPH10241069A (en
Inventor
博隆 濱口
剛嗣 和田
昭一 岡
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 JP03822097A priority Critical patent/JP3680475B2/en
Publication of JPH10241069A publication Critical patent/JPH10241069A/en
Application granted granted Critical
Publication of JP3680475B2 publication Critical patent/JP3680475B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

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

Description

【0001】
【発明の属する技術分野】
本発明は感知器に関し、特に、天井等への取付用のベースに感知器本体を回転係合して取り付ける構造を備えた感知器に関する。
【0002】
【従来の技術】
従来、火災感知器として、例えば図5に示す煙感知器のように、所定事態の変化に相当する、所定区域の火災発生により生ずる煙を感知するための感知器本体1と、天井面等に設置されるベース2とを備える構成のものが提案されている。この煙感知器のような火災感知器は、自動火災報知設備である火災受信機等のセンター装置から、信号電線である感知器回線が天井裏等に敷設されて配線され、ベース2に接続される。
【0003】
感知器本体1のカバー11には、図6に示すように、ベース2に設けられている電気接続手段である係合片23と係合する係合ばね17が設けられている。そして、ベース2と感知器本体1とは、互いに所定方向に相対回転させて着脱自在に嵌合して係合片23と係合ばね17とが係合され、電気的に接続されるとともに機械的に結合される。
【0004】
すなわち、上記の感知器は、感知器本体1とベース2との機械的結合を、電気接続手段にて兼ねたものである。そして、本出願人は、これら感知器本体1とベース2との機械的結合をより確実に行うため、図7に示すような、感知器本体1とベース2とに機械的結合手段と電気的接続手段とをそれぞれ設けた、実開平7−5086として開示されたものを出願している。
【0005】
この感知器は、端子片14が立設された、検知対象の所定事態の変化を感知する感知器本体1と、天井面等へ設置され、外部電線が接続されて前記端子片14に係合する係合端子22が設けられたベース2と、を備え、ベース2と感知器本体1とを互いに所定方向に相対回転させて着脱自在に嵌合し、端子片14と係合端子22とを係合して電気的接続を行う。そして、機械的結合手段として、感知器本体1の函体11の上面に係止爪11d、11dを一体に設け、ベース2のベースボディ21の開口縁部にこの係止爪11d、11dのそれぞれを係止するための係止突起21i、21iを設けている。また、係合端子22は、互いに対向する2つの板ばね部22a、22aと、該板ばね部22a、22aを連結する連結板部(図示せず)と、端子装置32の設けられた回路基板24に電気的接続且つ機械的固定する固定片部22gとをひとつの導電板材により折曲形成している。
【0006】
上記した感知器は、例えば後者のものにおいては、まず、ベース2に信号配線を端子装置32に配線し、図示していない取付孔によってスイッチボックス等の取付部に固着して天井面等に設置する。次いで、感知器本体1を、ベースボディ21の係止突起21i、21iをそれぞれ対応する係止爪11d、11dに係合させてベース2に取着し、互いに所定方向に相対回転して係止爪11d、11dを係止突起21i、21iに係合して結合する。このとき、端子片14が係合端子22に嵌合して電気的に接続される。なお、感知器本体1をベース2から取り外す場合には、結合するときとは反対方向に回転させ離脱することができる。
【0007】
【発明が解決しようとする課題】
ところで、上記した感知器は、係合端子22への、信号出力を兼ねた直流電源線の接続が極性を意識することなく行えるよう、一般に、図8に示すように、端子片14、14と内部回路間にダイオードブリッジDBを設けている。従って、感知器本体1とベース2との機械的な結合位置は、180度反転していても電気的接続は何ら問題がない。しかし、例えば、電源線以外の接続電線として、感知器動作を外部にて表示するための接点信号出力端子を設けた4線配線を行うものにおいては、例えば後者の感知器においては、4つの係合端子と端子片とがそれぞれ所定の対応位置にて嵌合するように、係止爪と係止突起とを対応させて係合し結合させる必要があった。そのため、感知器本体のベースへの取付が手間のかかるものであった。
【0008】
本発明は、上記事由に鑑みてなしたもので、その目的とするところは、ベースと感知器本体との機械的結合の位置決めが容易で、以て、取付作業の時間短縮のできる感知器を提供することにある。
【0009】
【課題を解決するための手段】
上記目的を達成するために、請求項1記載の感知器は、円状周縁部より内方に向けて突出する、弧状の嵌合凸部を有して検知対象の所定事態の変化を感知する感知器本体と、円状周壁の外面に前記嵌合凸部に対応する弧状の嵌合凹部を有して天井面等へ設置されるベースと、を備え、ベースと感知器本体とを互いに所定方向に相対回転させて着脱自在に嵌合する感知器において、前記嵌合凸部を、円状周縁部の少なくとも2つの異なる所定位置に、それぞれ形状の異なるように形成するとともに、該嵌合凸部に係合したのち回転させうるように、該嵌合凸部に対応する前記嵌合凹部に連設して嵌合凸部に対応する形状の凹所を形成している。これにより、感知器本体は、その円状周縁部の少なくとも2つの異なる所定位置に、それぞれ形状の異なるように形成された嵌合凸部が、ベースに形成された嵌合凸部に対応する形状の凹所と係合したのち回転されて嵌合凹部に嵌合し係止されるものとなる。
【0010】
また、請求項記載の感知器は、前記嵌合凸部を、それぞれ異なる個数の凸部を所定間隔をもって並設し形成するとともに、前記凹所を、それぞれ異なる個数の凹所としている。これにより、感知器本体に所定間隔をもって形成されたそれぞれ異なる個数の凸部が対応する形状の凹所と係合したのち回転されるものとなる。
【0011】
【発明の実施の形態】
以下、本発明の感知器の一実施の形態を図1乃至図4に基づいて説明する。
【0012】
図1は、本発明の感知器の一実施の形態の側面断面図である。図2は、図1に示す感知器の感知器本体の分解斜視図である。図3は、図1に示す感知器の要部であるベースの分解斜視図である。図4は、図1に示す感知器のベースの係合ばねの拡大図で、(a)は平面図、(b)はB−B断面矢視図である。
【0013】
この感知器は、例えば火災感知器としての熱感知器で、所定事態の変化に相当する、所定区域の火災発生により生ずる室内の温度変化を感知するための温度感知手段を有している感知器本体1と、天井面等に設置されるベース2とを備えている。
【0014】
感知器本体1は、図2に示すように、温度検知手段であるサーミスタ素子13を一面側にもっている回路基板12が感知器カバー11に係止されて構成されている。
【0015】
感知器カバー11は、例えばABS樹脂材料等の合成樹脂材料により、円状の周縁部より内方に向けて突出する弧状の嵌合凸部11aと、中央に後述する回路基板12を収納する円形凹状である基板収納部11bとを有し、一面開口の円錐台状に形成されている。嵌合凸部11aは、後述するベースボディ21の凹所21fにこの嵌合凸部11aを係合したのち回転させうるように、円状周縁部の異なる所定位置に、それぞれ異なる個数の凸部を所定間隔をもって並設し形成されている。このものは、周縁部の円を3等分する略120度の間隔のそれぞれの位置に、1乃至3つの凸部が並設されている。
【0016】
回路基板12は、一面側に設けられた棒状のサーミスタ素子13の先端が、基板カバー15の中心に形成された透孔15aに挿通されて露出され、この基板カバー15の周縁端が、係止爪16a、16aを持っている保護カバー16の周縁にて押圧されるようにして保護カバー16が感知器カバー11の基板収納部11bの周縁に形成された係止孔11c、11cに係止されて設けられている。回路基板12の他面側には、回路基板12の回路パターンに電気的に接続される4個の端子片14が、感知器カバー11を介して、その突起部14aが回路基板12の所定位置に形成されている端子孔12aに挿通された後半田付けされ、立設されている。この4個の端子片14は、後述するベース2に設けられている係合端子22の板ばね部22aに係合する係合部14bが、感知器カバー11の中心軸の周囲に所定間隔をもって配設され、感知器本体1とベース2とを電気的に接続する。そして、電源線からの電源供給とともに感知器動作を外部にて表示するための接点信号の出力を行う。なお、係合部14bには、端子片14がばね性をもって該板ばね部22aに係合保持されるように、適宜、透孔を設けても良い。
【0017】
ベース2は、図3に示すように、一面開口の円筒状のベースボディ21と、このベースボディの中心軸の周囲に、上記端子片14と対応するように配設されてその係合部14bに係合する4個の係合端子22(但し、図中は2個のみ図示している)とを有している。
【0018】
ベースボディ21は、例えばABS樹脂材料等の合成樹脂材料により、円状のベースボディ21の外形寸法より僅かに小さい外形寸法をもっている周壁21aと、底面中央部分の中心軸位置に形成された信号配線を挿通するための開口21bと、この開口を挟んだ直線上の、ベース2を天井面等に設けられているスイッチボックスの取付部等に固着するための取付孔21cと、開口21bを取り囲むように所定ピッチにて所定間隔をもって並設されているガイドリブ21dと、を有して一面開口の円筒状に形成されている。
【0019】
周壁21aには、上記の感知器カバー11に形成された嵌合凸部11aに対応し、ベース2と感知器本体1とを所定の位置関係にて係合させて取着するための嵌合凹部21eと、この嵌合凹部21eに隣接する凹所21fとが形成されている。すなわち、前記の感知器カバー11の嵌合凸部11aに対応するよう、周壁21aを3等分する略120度の間隔にて1乃至3つの凹所21嵌合凹部21eに連設して設けられている。従って、感知器本体1は、その円状周縁部の少なくとも2つの異なる所定位置に相当する、周壁21aを3等分する略120度の間隔にて、それぞれ形状の異なるようにするための1乃至3つの嵌合凸部11aが、ベースに形成された、嵌合凸部11aに対応する凹所21fと係合したのち回転されて嵌合凹部21に嵌合し係止されるものとなる。
【0020】
ガイドリブ21dは、図4(a)に示すように、後述する係合端子22を係止するための、このガイドリブ21dの対向面の所定位置の中間高さ位置に形成された所定段差の角状の凸部21gをもって、該係合端子22を電気的及び機械的に保護するように4個が並設されて形成されている。また、ガイドリブ21dの対向面の中間には係合端子22を位置決めするための位置決め突起21hが設けられている。
【0021】
係合端子22は、図4(a)に示すように、互いに対向する2つの板ばね部22a、22aと板ばね部22a、22aの基端部22b、22bが延設折曲して形成される連結板部22cとを有し、黄銅板材料等のばね性を有する導電性金属材料にて形成されている。板ばね部22a、22aは、いずれか一方の板ばね部の対向面の中間に、前記の透孔と係合する所定高さの球面状の突起が適宜設けられ、それぞれの基端部22b、22bの所定位置に、ベースボディ21に形成されたガイドリブ22dに設けられている角状の凸部21gと係合する、凸部21gの角状より僅かに大きい角穴22d、22dが設けられている。連結部22cは、基端部22b、22bが対向し形成される中間部分で、係合端子22を1枚の導電板材にて形成するための部分である。そして、このものにおいては、前記位置決め突起21hが挿通されて係合端子22を位置決めするための透孔22eが形成されるとともに、外部電線が接続される速結端子部3の端子金具32と一端が半田付け接続される接続片22fが延設されている。この係合端子22は、2つの板ばね部22a、22aの折曲形成される基端部22b、22bに形成された角穴22d、22dが、上記ベースボディ21の4個のガイドリブ21dに形成された角状の凸部21g、21gと係合して係止されている。
【0022】
なお、上記の速結端子部3は、ベースボディ21とベースボディ21に嵌合係止される端子カバー31と間に、そのコ字状の対向片の一端が上記接続片22fの一端と半田付けされる端子金具32、32の対向片間に、所定形状に湾曲し折曲形成された押圧ばね33が所定個数配設されて形成され、所定の線径をもっている単線の信号配線を押圧し係止する、周知の速結端子構造をもって構成されている。
【0023】
以上説明した熱感知器の組立は、感知器本体1は、まず、回路基板12を感知器カバー11の所定位置に配設して、4個の端子片14を回路基板12の他面側に立設されるようにして感知器カバー11を介して半田付けする。次いで、基板カバー15を、回路基板12に実装されたサーミスタ素子13を基板カバー15の透孔15aに挿通した後、回路基板12の周縁を基板カバー15の周縁端にて押圧するように配置する。そして、さらに基板カバー15を、保護カバー16の周縁にて押圧するように、保護カバー16の係止爪16aを感知器カバー11の係止孔11aに挿入して組立を完了する。
【0024】
また、ベース2は、まず、4個の係合端子22を、ベースボディ21の底面に並設されているガイドリブ21dの間に、位置決めのための透孔22eに位置決め突起21hを挿通させるとともに角穴22d、22dに角状の凸部21g、21gを係合させて係止する。次いで、接続片22fの一端を速結端子部3の端子金具32、32に半田付けした後、端子金具32、32の対向片間に押圧ばね33を配設して端子カバー31をベースボディ21に凹凸結合等にて結合固着し組立を完了する。
【0025】
上記した熱感知器は、まず、ベース2に、電源線と接点信号配線とを速結端子部3によって接続し、取付孔21cによってスイッチボックス等の取付部に固着して天井等に設置する。次いで、感知器本体1を、感知器カバー11の嵌合凸部11aをベース2のそれぞれ対応する凹所21fに係合させてベース2に取着し、互いに所定方向に相対回転して各嵌合凸部11aを嵌合凹部21eに係合して結合するとともに、端子片14が係合端子22に嵌合して電気的に接続される。そして、直流電源が2個の係合端子22から供給されて火災感知信号が出力されるとともに、他の2個の係合端子22から感知器動作を外部にて表示するための接点信号が出力される。なお、感知器本体をベースから取り外す場合には、係合するときとは反対方向に回転させ離脱することができる。
【0026】
以上説明した熱感知器によると、感知器本体1は、その円状周縁部の少なくとも2つの異なる所定位置に、それぞれ形状の異なるように形成された嵌合凸部11aが、ベース2に形成された嵌合凸部11aに対応する形状の凹所21と係合したのち回転されて嵌合凹部21に嵌合し係止されるものとなるので、ベース2と感知器本体1との機械的結合の位置決めが容易で、以て、取付作業の時間短縮ができる。また、感知器本体1に所定間隔をもって形成されたそれぞれ異なる個数の凸部が、対応する形状の凹所と係合したのち回転されるものとなるので、目視確認にて直ちに感知器本体1とベース2との対応を把握できるので、嵌合凸部11aに対応する形状の凹所21と係合をより早く行え、より取付作業の時間短縮ができるものとなる。
【0027】
なお、上記の実施の形態の説明において、熱感知器を例示して説明したが本発明はそのもののみに限定するものでなく、例えば火災感知用の煙感知器、防犯用の人体検知器等であっても良い
【0028】
【発明の効果】
請求項1記載の感知器は、感知器本体は、その円状周縁部の少なくとも2つの異なる所定位置に、それぞれ形状の異なるように形成された嵌合凸部が、ベースに形成された嵌合凸部に対応する形状の凹所と係合したのち回転されて嵌合凹部に嵌合し係止されるものとなるので、ベースと感知器本体との機械的結合の位置決めが容易で、以て、取付作業の時間短縮ができる。
【0029】
また、請求項記載の感知器は、上記の効果に加え、感知器本体に所定間隔をもって形成されたそれぞれ異なる個数の凸部が対応する形状の凹所と係合したのち回転されるものとなるので、目視確認にて直ちに感知器本体とベースとの対応を把握できて、嵌合凸部に対応する形状の凹所と係合をより早く行え、より取付作業の時間短縮ができるものとなる。
【図面の簡単な説明】
【図1】本発明の感知器の一実施の形態の側面断面図である。
【図2】図1に示す感知器の感知器本体の分解斜視図である。
【図3】図1に示す感知器の要部であるベースの分解斜視図である。
【図4】図1に示す感知器のベースの係合ばねの拡大図で、(a)は平面図、(b)はB−B断面矢視図である。
【図5】従来例の感知器の斜視図である。
【図6】図5に示す感知器の側面断面図である。
【図7】他の従来例の感知器の側面断面図である。
【図8】感知器の電源入力の説明図である。
【符号の説明】
1 感知器本体
11a 嵌合凸部
2 ベース
21a 周壁
21e 嵌合凹部
21f 凹所
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sensor, and more particularly to a sensor having a structure in which a sensor body is rotationally engaged with a base for mounting on a ceiling or the like.
[0002]
[Prior art]
Conventionally, as a fire detector, for example, a smoke detector shown in FIG. 5, a sensor body 1 for detecting smoke caused by a fire in a predetermined area corresponding to a change in a predetermined situation, and a ceiling surface, etc. The thing of the structure provided with the base 2 installed is proposed. A fire detector such as a smoke detector is connected to the base 2 from a center device such as a fire receiver that is an automatic fire alarm system, with a sensor line that is a signal wire laid on the back of the ceiling or the like. The
[0003]
As shown in FIG. 6, the cover 11 of the sensor body 1 is provided with an engagement spring 17 that engages with an engagement piece 23 that is an electrical connection means provided on the base 2. Then, the base 2 and the sensor body 1 are rotated relative to each other in a predetermined direction so as to be detachably fitted, and the engagement piece 23 and the engagement spring 17 are engaged and electrically connected to each other and the machine Combined.
[0004]
In other words, the above-described sensor combines mechanical connection between the sensor body 1 and the base 2 with the electrical connection means. Then, in order to perform the mechanical coupling between the sensor body 1 and the base 2 more reliably, the applicant of the present invention has a mechanical coupling means and an electrical connection between the sensor body 1 and the base 2 as shown in FIG. An application has been filed as disclosed in Japanese Utility Model Laid-Open No. 7-5086, each having connection means.
[0005]
The sensor is installed on the ceiling surface or the like, and the sensor body 1 that senses a change in a predetermined situation of the detection target, with the terminal piece 14 erected, and is engaged with the terminal piece 14 by connecting an external electric wire. And a base 2 provided with an engaging terminal 22 for rotating the base 2 and the sensor body 1 relative to each other in a predetermined direction so as to be detachably fitted, and the terminal piece 14 and the engaging terminal 22 are connected to each other. Engage to make an electrical connection. As mechanical coupling means, locking claws 11d and 11d are integrally provided on the upper surface of the box 11 of the sensor body 1, and the locking claws 11d and 11d are respectively provided at the opening edge of the base body 21 of the base 2. Locking projections 21i and 21i are provided for locking the. The engagement terminal 22 includes two plate spring portions 22a and 22a facing each other, a connecting plate portion (not shown) for connecting the plate spring portions 22a and 22a, and a circuit board provided with a terminal device 32. A fixed piece 22g that is electrically connected and mechanically fixed to 24 is bent by one conductive plate material.
[0006]
In the latter case, for example, in the latter case, first, signal wiring is wired to the base device 2 to the terminal device 32, and is fixed to a mounting portion such as a switch box through a mounting hole (not shown) and installed on a ceiling surface or the like. To do. Next, the sensor body 1 is attached to the base 2 by engaging the locking projections 21i and 21i of the base body 21 with the corresponding locking claws 11d and 11d, and is locked by rotating relative to each other in a predetermined direction. The claws 11d and 11d are engaged with and coupled to the locking projections 21i and 21i. At this time, the terminal piece 14 is engaged with and electrically connected to the engagement terminal 22. In addition, when removing the sensor main body 1 from the base 2, it can be removed by rotating in the opposite direction to the time of coupling.
[0007]
[Problems to be solved by the invention]
By the way, in the above-described sensor, in general, as shown in FIG. 8, the terminal pieces 14 and 14 are connected to the engagement terminal 22 so that the connection of the DC power supply line also serving as a signal output can be performed. A diode bridge DB is provided between the internal circuits. Therefore, there is no problem in electrical connection even if the mechanical coupling position of the sensor body 1 and the base 2 is reversed 180 degrees. However, for example, in a case where a four-wire wiring provided with a contact signal output terminal for externally displaying the sensor operation is used as a connecting wire other than the power supply line, for example, the latter sensor has four factors. It has been necessary to engage and couple the locking claws and the locking projections in correspondence with each other so that the mating terminal and the terminal piece are fitted at predetermined positions. For this reason, it takes time to mount the sensor body to the base.
[0008]
The present invention has been made in view of the above-mentioned reasons, and an object of the present invention is to provide a sensor that can easily position the mechanical coupling between the base and the sensor body and can reduce the time required for the mounting operation. It is to provide.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the sensor according to claim 1 has an arc-shaped fitting convex portion protruding inward from the circular peripheral edge portion to sense a change in a predetermined condition of the detection target. A sensor body and a base having an arcuate fitting recess corresponding to the fitting protrusion on the outer surface of the circular peripheral wall and installed on a ceiling surface or the like, the base and the sensor body being mutually predetermined In the sensor which is relatively rotated in the direction and is detachably fitted, the fitting projections are formed in different shapes at at least two different predetermined positions on the circular peripheral edge, and the fitting projections are formed. A recess having a shape corresponding to the fitting convex portion is formed continuously with the fitting concave portion corresponding to the fitting convex portion so as to be rotated after being engaged with the portion. As a result, the sensor body has a shape in which the fitting protrusions formed in different shapes at the two different predetermined positions of the circular peripheral edge portion correspond to the fitting protrusions formed on the base. After being engaged with the recess, it is rotated and fitted and locked in the fitting recess.
[0010]
According to a first aspect of the present invention, the fitting convex portions are formed by arranging different numbers of convex portions side by side with a predetermined interval, and the concave portions have different numbers of concave portions. Accordingly, different numbers of convex portions formed at predetermined intervals on the sensor body are rotated after engaging with the corresponding concave portions.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a sensor according to the present invention will be described with reference to FIGS.
[0012]
FIG. 1 is a side sectional view of an embodiment of the sensor of the present invention. FIG. 2 is an exploded perspective view of the sensor body of the sensor shown in FIG. FIG. 3 is an exploded perspective view of a base as a main part of the sensor shown in FIG. FIG. 4 is an enlarged view of an engagement spring of the base of the sensor shown in FIG. 1, wherein (a) is a plan view and (b) is a cross-sectional view taken along the line BB.
[0013]
This sensor is, for example, a heat sensor as a fire sensor, and a sensor having temperature sensing means for sensing a temperature change in a room caused by the occurrence of a fire in a predetermined area corresponding to a change in a predetermined situation. A main body 1 and a base 2 installed on a ceiling surface or the like are provided.
[0014]
As shown in FIG. 2, the sensor main body 1 is configured by a circuit board 12 having a thermistor element 13 serving as a temperature detection means on one side being engaged with a sensor cover 11.
[0015]
The sensor cover 11 is made of, for example, a synthetic resin material such as an ABS resin material, and has an arcuate fitting convex portion 11a that protrudes inward from a circular peripheral edge portion, and a circular shape that houses a circuit board 12 described later in the center. The substrate storage portion 11b has a concave shape, and is formed in a truncated cone shape with one opening. The fitting protrusions 11a have different numbers of protrusions at different predetermined positions on the circular peripheral edge so that the fitting protrusions 11a can be rotated after being engaged with a recess 21f of the base body 21 described later. Are arranged side by side with a predetermined interval. In this device, 1 to 3 convex portions are arranged in parallel at respective positions at intervals of approximately 120 degrees that divide the circumferential circle into three equal parts.
[0016]
The circuit board 12 is exposed by inserting the tip of a rod-like thermistor element 13 provided on one side into a through hole 15a formed in the center of the board cover 15, and the peripheral edge of the board cover 15 is locked. The protective cover 16 is locked in locking holes 11c and 11c formed in the peripheral edge of the substrate housing portion 11b of the sensor cover 11 so as to be pressed at the peripheral edge of the protective cover 16 having the claws 16a and 16a. Is provided. On the other surface side of the circuit board 12, four terminal pieces 14 that are electrically connected to the circuit pattern of the circuit board 12 are arranged via the sensor cover 11, and the protrusions 14 a thereof are located at predetermined positions on the circuit board 12. After being inserted into the terminal hole 12a formed in the soldering, it is soldered and erected. The four terminal pieces 14 have engagement portions 14b that engage with leaf spring portions 22a of engagement terminals 22 provided on the base 2 described later, with a predetermined interval around the center axis of the sensor cover 11. The sensor body 1 and the base 2 are electrically connected. Then, together with the power supply from the power line, a contact signal for displaying the sensor operation externally is output. In addition, you may provide a through-hole suitably in the engaging part 14b so that the terminal piece 14 may be engaged and hold | maintained by this leaf | plate spring part 22a with springiness.
[0017]
As shown in FIG. 3, the base 2 is disposed around the central axis of the cylindrical base body 21 having one opening and the terminal piece 14 so as to correspond to the terminal piece 14. There are four engaging terminals 22 (only two are shown in the figure).
[0018]
The base body 21 is made of, for example, a synthetic resin material such as an ABS resin material, and has a peripheral wall 21a having an outer dimension slightly smaller than the outer dimension of the circular base body 21 and a signal wiring formed at the center axis position of the bottom center portion. An opening 21b for inserting the base 2, a mounting hole 21c for fixing the base 2 to a mounting portion of a switch box provided on the ceiling surface, etc. on a straight line across the opening, and the opening 21b The guide ribs 21d are arranged in parallel at a predetermined pitch and at a predetermined interval.
[0019]
The peripheral wall 21a corresponds to the fitting convex portion 11a formed on the sensor cover 11, and is a fitting for engaging and attaching the base 2 and the sensor main body 1 in a predetermined positional relationship. A recess 21e and a recess 21f adjacent to the fitting recess 21e are formed. That is, to correspond to the fitting projection 11a of the sensing unit cover 11, is one to three recesses 21 f at intervals of approximately 120 degrees to 3 equally divided wall 21a is provided continuously to the fitting recess 21e It has been kicked set Te. Accordingly, the sensor main body 1 has different shapes from 1 to 2 at intervals of approximately 120 degrees that divide the peripheral wall 21a into three equal parts corresponding to at least two different predetermined positions of the circular peripheral edge. three engaging projections 11a are formed in the base, and those and locked by fitting is rotated into the mating recess 21 e then engaged with the recess 21f corresponding to the fitting protrusion 11a .
[0020]
As shown in FIG. 4 (a), the guide rib 21d has an angular shape with a predetermined step formed at an intermediate height position of a predetermined position on the opposing surface of the guide rib 21d for locking an engagement terminal 22 described later. The four protrusions 21g are arranged in parallel so as to protect the engagement terminals 22 electrically and mechanically. A positioning projection 21h for positioning the engagement terminal 22 is provided in the middle of the opposing surface of the guide rib 21d.
[0021]
As shown in FIG. 4A, the engagement terminal 22 is formed by extending and bending two leaf spring portions 22a and 22a facing each other and base end portions 22b and 22b of the leaf spring portions 22a and 22a. Connecting plate portion 22c, and is formed of a conductive metal material having spring properties such as a brass plate material. Each of the leaf spring portions 22a and 22a is appropriately provided with a spherical protrusion having a predetermined height that engages with the through hole in the middle of the opposing surface of one of the leaf spring portions, and each base end portion 22b, Square holes 22d and 22d that are slightly larger than the square shape of the convex portion 21g and that are engaged with the square convex portion 21g provided on the guide rib 22d formed on the base body 21 are provided at predetermined positions of 22b. Yes. The connecting portion 22c is an intermediate portion formed so that the base end portions 22b and 22b face each other, and is a portion for forming the engaging terminal 22 with a single conductive plate material. And in this thing, while the said positioning protrusion 21h is penetrated and the through-hole 22e for positioning the engaging terminal 22 is formed, the terminal metal fitting 32 of the quick connection terminal part 3 to which an external electric wire is connected, and one end A connection piece 22f is connected to be soldered. In the engagement terminal 22, square holes 22d and 22d formed in the base end portions 22b and 22b formed by bending the two leaf spring portions 22a and 22a are formed in the four guide ribs 21d of the base body 21. Engaged and locked with the angular projections 21g, 21g.
[0022]
The quick connection terminal portion 3 has a U-shaped opposed piece between the base body 21 and the terminal cover 31 fitted and locked to the base body 21, and one end of the connecting piece 22f is soldered. Between the opposing pieces of the terminal fittings 32 and 32 to be attached, a predetermined number of pressing springs 33 that are bent and formed in a predetermined shape are arranged and formed to press a single signal wiring having a predetermined wire diameter. It is configured with a well-known quick-connection terminal structure to be locked.
[0023]
In the assembly of the heat sensor described above, the sensor body 1 first arranges the circuit board 12 at a predetermined position of the sensor cover 11 and places the four terminal pieces 14 on the other surface side of the circuit board 12. Soldering is performed through the sensor cover 11 in a standing manner. Next, the board cover 15 is disposed so that the thermistor element 13 mounted on the circuit board 12 is inserted into the through hole 15 a of the board cover 15, and then the peripheral edge of the circuit board 12 is pressed by the peripheral edge of the board cover 15. . Then, the latching claw 16a of the protective cover 16 is inserted into the latching hole 11a of the sensor cover 11 so that the substrate cover 15 is further pressed by the peripheral edge of the protective cover 16, and the assembly is completed.
[0024]
In addition, the base 2 first has four engaging terminals 22 inserted between guide ribs 21d arranged in parallel on the bottom surface of the base body 21, and positioning protrusions 21h are inserted into the through holes 22e for positioning. The angular projections 21g and 21g are engaged and locked in the holes 22d and 22d. Next, one end of the connection piece 22f is soldered to the terminal fittings 32, 32 of the quick connection terminal portion 3, and then a pressing spring 33 is disposed between the opposing pieces of the terminal fittings 32, 32 to attach the terminal cover 31 to the base body 21. The assembly is completed by bonding and fixing to the surface by uneven bonding or the like.
[0025]
The above-mentioned heat detector is first installed on the ceiling or the like by connecting the power line and the contact signal wiring to the base 2 by the quick connection terminal portion 3 and fixing to the mounting portion such as the switch box by the mounting hole 21c. Next, the sensor body 1 is attached to the base 2 by engaging the fitting protrusions 11a of the sensor cover 11 with the corresponding recesses 21f of the base 2, and each fitting is performed by rotating relative to each other in a predetermined direction. The mating convex portion 11a is engaged and coupled to the fitting concave portion 21e, and the terminal piece 14 is fitted to the engaging terminal 22 and electrically connected. A DC power source is supplied from the two engagement terminals 22 to output a fire detection signal, and a contact signal for displaying the detector operation from the other two engagement terminals 22 is output. Is done . Na us, when removing the sensor body 1 from the base 2, and when the engagement can be disengaged by rotating in the opposite direction.
[0026]
According to the heat sensor described above, the sensor body 1 is formed with the fitting protrusions 11a formed on the base 2 in different shapes at at least two different predetermined positions on the circular peripheral edge thereof. After engaging with the recess 21 f having a shape corresponding to the fitting convex portion 11 a, it is rotated and fitted into the fitting concave portion 21 e to be locked. The positioning of the mechanical connection is easy, and thus the time required for mounting can be shortened. In addition, since different numbers of convex portions formed at predetermined intervals on the sensor main body 1 are rotated after engaging with corresponding recesses, the sensor main body 1 and the sensor main body 1 can be immediately confirmed by visual confirmation. Since the correspondence with the base 2 can be grasped, the engagement with the recess 21 f having a shape corresponding to the fitting convex portion 11 a can be performed earlier, and the time required for the mounting operation can be further shortened.
[0027]
In the above description of the embodiment, the heat detector has been described as an example, but the present invention is not limited to the heat detector itself. For example, a smoke detector for fire detection, a human body detector for crime prevention, and the like. There may be .
[0028]
【The invention's effect】
Sensor of claim 1, wherein the sensor body is at least two different predetermined positions of the circular periphery of that, fitting the fitting convex portion that is formed to different shapes, formed in the base After being engaged with the recess of the shape corresponding to the mating convex part and rotated and fitted into the fitting concave part, it is easy to position the mechanical coupling between the base and the sensor body, As a result, the installation work time can be shortened.
[0029]
In addition to the above-described effect, the sensor according to claim 1 is rotated after a different number of convex portions formed at predetermined intervals on the sensor body are engaged with corresponding concave portions. As a result, it is possible to immediately grasp the correspondence between the sensor body and the base by visual confirmation, to engage with the recess of the shape corresponding to the fitting convex portion earlier, and to shorten the installation work time. Become.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view of an embodiment of a sensor of the present invention.
FIG. 2 is an exploded perspective view of a sensor body of the sensor shown in FIG.
FIG. 3 is an exploded perspective view of a base that is a main part of the sensor shown in FIG. 1;
4 is an enlarged view of an engagement spring of a base of the sensor shown in FIG. 1, where (a) is a plan view and (b) is a cross-sectional view taken along the line BB.
FIG. 5 is a perspective view of a conventional sensor.
6 is a side cross-sectional view of the sensor shown in FIG. 5. FIG.
FIG. 7 is a side cross-sectional view of another conventional sensor.
FIG. 8 is an explanatory diagram of power input of a sensor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sensor main body 11a Fitting convex part 2 Base 21a Perimeter wall 21e Fitting recessed part 21f Recessed part

Claims (1)

円状周縁部より内方に向けて突出する、弧状の嵌合凸部を有して検知対象の所定事態の変化を感知する感知器本体と、円状周壁の外面に前記嵌合凸部に対応する弧状の嵌合凹部を有して天井面等へ設置されるベースと、を備え、ベースと感知器本体とを互いに所定方向に相対回転させて着脱自在に嵌合する感知器において、
前記嵌合凸部を、円状周縁部の少なくとも2つの異なる所定位置に、それぞれ形状の異なるように形成するとともに、該嵌合凸部に係合したのち回転させうるように、該嵌合凸部に対応する前記嵌合凹部に連設して嵌合凸部に対応する形状の凹所を形成した感知器であって、前記嵌合凸部を、それぞれ異なる個数の凸部を所定間隔をもって並設し形成するとともに、前記凹所を、それぞれ異なる個数の凹所としたことを特徴とする感知器。
A sensor body that has an arc-shaped fitting projection that protrudes inward from the circular peripheral edge and senses a change in a predetermined situation to be detected, and the fitting projection on the outer surface of the circular peripheral wall A sensor having a corresponding arcuate fitting recess and a base installed on a ceiling surface or the like, wherein the base and the sensor body rotate relative to each other in a predetermined direction so as to be detachably fitted,
The fitting projections are formed in at least two different predetermined positions on the circular peripheral edge so as to have different shapes, and the fitting projections can be rotated after being engaged with the fitting projections. A sensor in which a recess having a shape corresponding to a fitting convex portion is formed by being connected to the fitting concave portion corresponding to a fitting portion , wherein the fitting convex portions are provided with different numbers of convex portions at predetermined intervals. A sensor that is formed side by side and has a different number of recesses .
JP03822097A 1997-02-21 1997-02-21 sensor Expired - Lifetime JP3680475B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03822097A JP3680475B2 (en) 1997-02-21 1997-02-21 sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03822097A JP3680475B2 (en) 1997-02-21 1997-02-21 sensor

Publications (2)

Publication Number Publication Date
JPH10241069A JPH10241069A (en) 1998-09-11
JP3680475B2 true JP3680475B2 (en) 2005-08-10

Family

ID=12519231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03822097A Expired - Lifetime JP3680475B2 (en) 1997-02-21 1997-02-21 sensor

Country Status (1)

Country Link
JP (1) JP3680475B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012083816A (en) * 2010-10-07 2012-04-26 Hochiki Corp Detector, and detector mounting and wiring connecting method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1881470A4 (en) * 2005-05-10 2009-03-04 Hochiki Co Alarm outputting apparatus
CN101833837B (en) * 2005-05-10 2013-11-20 报知机股份有限公司 Fire alarm system
JP5075220B2 (en) * 2010-04-21 2012-11-21 ホーチキ株式会社 Alarm output device
JP4887441B2 (en) * 2010-04-21 2012-02-29 ホーチキ株式会社 Alarm output device
JP6356764B2 (en) * 2016-11-15 2018-07-11 矢崎エナジーシステム株式会社 Thermal fire alarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012083816A (en) * 2010-10-07 2012-04-26 Hochiki Corp Detector, and detector mounting and wiring connecting method

Also Published As

Publication number Publication date
JPH10241069A (en) 1998-09-11

Similar Documents

Publication Publication Date Title
US4887073A (en) Ceiling mounted fire detector assembly
US6086399A (en) Earth joint connector
EP2924815B1 (en) Electrical device with a mounting interface and an electrical module
JP2817272B2 (en) Display of electric water heater
JP3680475B2 (en) sensor
JP3331072B2 (en) Pin fitting structure of address unit with built-in base
JP3404801B2 (en) Detector sensing head
CN215527532U (en) Elastic key and gateway socket
KR101767580B1 (en) Smart plug socket device comprising plug pins having head part
JPH10241068A (en) Sensor
CN103545136B (en) Electronic installation and power knob module thereof
RU2491688C2 (en) Wiring device
JPH064555Y2 (en) Socket device for baseless lamp
JPH087514Y2 (en) Constant temperature fire detector
JP2536639Y2 (en) Sensor base
KR101786746B1 (en) Smart plug socket device having bended antenna embeded therein
JPH07272154A (en) Device for fire alarm equipment
JPH06251268A (en) Sensor base
JPH086256Y2 (en) Fluxgate type magnetic direction detector
JPH07272153A (en) Device for fire alarm equipment
JP3921656B2 (en) Fire detector
JPH0731348Y2 (en) Semiconductor thermal sensor
JP2003264041A (en) Wall plate assembling body
JPH07272152A (en) Device for fire alarm equipment
JPH1116412A (en) Back lamp socket

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20041124

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050114

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: 20050426

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050509

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

Free format text: PAYMENT UNTIL: 20080527

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20090527

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: 20090527

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: 20100527

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20100527

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20110527

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20120527

Year of fee payment: 7

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

Free format text: PAYMENT UNTIL: 20120527

Year of fee payment: 7

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

Free format text: PAYMENT UNTIL: 20130527

Year of fee payment: 8

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

Free format text: PAYMENT UNTIL: 20130527

Year of fee payment: 8

EXPY Cancellation because of completion of term