JPH03110596U - - Google Patents
Info
- Publication number
- JPH03110596U JPH03110596U JP1792490U JP1792490U JPH03110596U JP H03110596 U JPH03110596 U JP H03110596U JP 1792490 U JP1792490 U JP 1792490U JP 1792490 U JP1792490 U JP 1792490U JP H03110596 U JPH03110596 U JP H03110596U
- Authority
- JP
- Japan
- Prior art keywords
- ion chamber
- radiation source
- inner electrode
- smoke
- hole
- 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
- 239000000779 smoke Substances 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 8
- 210000000078 claw Anatomy 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000000752 ionisation method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Fire-Detection Mechanisms (AREA)
Description
第１図は本考案の一実施例の要部の分解斜視図
、第２図は放射線源の押え板による固定状態の説
明図、第３図は内電極の支持台及びプリント基板
への取付状態を示す断面図、第４図はイオン化式
煙感知器の全体構成を示す分解斜視図、第５図は
内電極の端子片の支持台への別の固定構造を示す
説明図、第６図は同上の取付状態を示す断面図、
第７図は内電極の端子片の支持台へのさらに別の
固定構造を示す説明図、第８図は同上の取付状態
を示す断面図、第９図は内電極の端子片の支持台
へのさらに別の固定構造を示す説明図、第１０図
は従来例の要部の分解斜視図、第１１図は放射線
源の押え板による固定状態の説明図、第１２図は
内電極の支持台及びプリント基板への取付状態を
示す断面図である。
１……外電極、２……内電極、２ｂ……端子片
、２ｄ……凹所、２ｅ……爪、６……支持台、１
０……プリント基板、７……放射線源、８……押
え板、８ｃ……開口、８ｄ……挿入孔、８ｅ……
押え片である。
Fig. 1 is an exploded perspective view of the main parts of an embodiment of the present invention, Fig. 2 is an explanatory diagram of the radiation source fixed by the holding plate, and Fig. 3 is the inner electrode attached to the support stand and printed circuit board. 4 is an exploded perspective view showing the overall configuration of the ionization type smoke detector, FIG. 5 is an explanatory view showing another fixing structure of the terminal piece of the inner electrode to the support base, and FIG. A sectional view showing the installation state of the same as above,
Fig. 7 is an explanatory diagram showing yet another fixing structure for the terminal piece of the inner electrode to the support base, Fig. 8 is a sectional view showing the same mounting state as above, and Fig. 9 is an explanatory diagram showing the terminal piece of the inner electrode to the support base. Fig. 10 is an exploded perspective view of the main parts of the conventional example, Fig. 11 is an explanatory drawing of the radiation source fixed by a holding plate, and Fig. 12 is a support stand for the inner electrode. FIG. 3 is a cross-sectional view showing how it is attached to a printed circuit board. 1... Outer electrode, 2... Inner electrode, 2b... Terminal piece, 2d... Recess, 2e... Claw, 6... Support stand, 1
0... Printed circuit board, 7... Radiation source, 8... Holding plate, 8c... Opening, 8d... Insertion hole, 8e...
It is a presser piece.
Claims (1)
を流入させる穴が形成された外電極と、イオン室
内に配置された内電極とを備え、内電極の上に放
射線源を載置して押え板で押えて固定するイオン
化式煙感知器において、内電極の放射線源の載置
面に放射線源を収める凹所を形成すると共に、そ
の凹所の周部に押え板を固定する複数の爪を形成
し、押え板を平板で形成すると共に、その中央に
放射線源を露呈する開口と、上記爪を挿入する挿
入孔を形成して成ることを特徴とするイオン化式
煙感知器。 (2) 上記押え板の開口に放射線源の上面を押さ
える押え片を部分形成して成る請求項１記載のイ
オン化式煙感知器。 (3) 内部がイオン室となりこのイオン室内に煙
を流入させる穴が形成された外電極と、イオン室
内に配置された内電極とを備え、上記内電極を支
持台に載置し、内電極の突設された端子片を支持
台を通して煙感知回路を構成する部品が実装され
たプリント基板に接続するイオン化式煙感知器に
おいて、端子片の形状を支持台の孔に圧入する形
状に形成して成ることを特徴とするイオン化式煙
感知器。[Claims for Utility Model Registration] (1) An outer electrode that has an ion chamber inside and a hole through which smoke flows into the ion chamber, and an inner electrode that is placed inside the ion chamber. In an ionization smoke detector in which a radiation source is placed and held down by a holding plate, a recess for housing the radiation source is formed on the radiation source placement surface of the inner electrode, and a holding plate is placed around the periphery of the recess. An ionization method characterized by forming a plurality of claws for fixing the plate, forming the holding plate as a flat plate, and forming an opening exposing the radiation source in the center and an insertion hole into which the claws are inserted. Smoke detectors. (2) The ionization type smoke detector according to claim 1, wherein a presser piece for pressing the upper surface of the radiation source is partially formed in the opening of the presser plate. (3) The interior of the electrode is an ion chamber, and the inner electrode is provided with a hole for allowing smoke to flow into the ion chamber, and the inner electrode is placed inside the ion chamber. In an ionization type smoke detector, in which a protruding terminal piece is connected to a printed circuit board on which components constituting a smoke detection circuit are mounted through a support stand, the shape of the terminal piece is formed to be press-fitted into a hole in the support stand. An ionization type smoke detector characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990017924U JP2549712Y2 (en) | 1990-02-23 | 1990-02-23 | Ionized smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990017924U JP2549712Y2 (en) | 1990-02-23 | 1990-02-23 | Ionized smoke detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03110596U true JPH03110596U (en) | 1991-11-13 |
| JP2549712Y2 JP2549712Y2 (en) | 1997-09-30 |
Family
ID=31521101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990017924U Expired - Lifetime JP2549712Y2 (en) | 1990-02-23 | 1990-02-23 | Ionized smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2549712Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5153892U (en) * | 1974-10-21 | 1976-04-24 |
-
1990
- 1990-02-23 JP JP1990017924U patent/JP2549712Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5153892U (en) * | 1974-10-21 | 1976-04-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2549712Y2 (en) | 1997-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |