JPH01100294U - - Google Patents
Info
- Publication number
- JPH01100294U JPH01100294U JP19637787U JP19637787U JPH01100294U JP H01100294 U JPH01100294 U JP H01100294U JP 19637787 U JP19637787 U JP 19637787U JP 19637787 U JP19637787 U JP 19637787U JP H01100294 U JPH01100294 U JP H01100294U
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- fet
- insulating block
- circuit
- storage chamber
- 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.)
- Pending
Links
- 239000000779 smoke Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Fire-Detection Mechanisms (AREA)
Description
第１図は本考案の一実施例を示した断面図、第
２図は第１図の絶縁ブロツクを取出して示した断
面図、第３図は第２図の平面図である。
１：感知器本体、２：感知器ベース、３：本体
カバー、４：外カバー、５：煙流入口、６：絶縁
ブロツク、７：検煙電極室、８：回路収納室、９
：内部電極、１０：中間電極、１１：外部電極、
１２：プリント基板、１３：シールドケース、１
４：ＦＥＴ収納部、１５：ＦＥＴ、１６：電極リ
ード端子、１７：ポツテイング樹脂、１８：電極
取付穴、１９：凹凸リング部、２０：通し穴、２
１：隔壁、２２：ＦＥＴ取付穴、２３：通し穴、
２４：コンデンサ収納部、Ａ：内部電離室、Ｂ：
外部電離室。
FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of the insulating block shown in FIG. 1, and FIG. 3 is a plan view of FIG. 2. 1: Sensor body, 2: Sensor base, 3: Body cover, 4: Outer cover, 5: Smoke inlet, 6: Insulation block, 7: Smoke detection electrode chamber, 8: Circuit storage chamber, 9
: internal electrode, 10: intermediate electrode, 11: external electrode,
12: Printed circuit board, 13: Shield case, 1
4: FET storage section, 15: FET, 16: Electrode lead terminal, 17: Potting resin, 18: Electrode mounting hole, 19: Uneven ring section, 20: Through hole, 2
1: Bulkhead, 22: FET mounting hole, 23: Through hole,
24: Capacitor storage section, A: Internal ionization chamber, B:
External ionization chamber.
Claims (1)
間電極及び外部からの煙流入可能な外部電極を備
えた検煙電極室と感知器回路を実装した回路基板
を収納する回路収納室とを絶縁ブロツクで仕切つ
た構造のイオン化式煙感知器に於いて、 前記絶縁ブロツクの回路収納室側にＦＥＴ及び
該絶縁ブロツクの通し穴を嵌通した中間電極の電
極リード端子を絶縁封止状態で収納するＦＥＴ収
納部を設けたことを特徴とするイオン化式煙感知
器。[Scope of Claim for Utility Model Registration] A circuit board on which a smoke detection electrode chamber and a sensor circuit are mounted, which are equipped with an internal electrode equipped with a radiation source, an intermediate electrode equipped with an opening hole, and an external electrode that allows smoke to flow in from the outside. In an ionization type smoke detector having a structure in which a circuit storage chamber for housing is partitioned off by an insulating block, an FET is provided on the circuit storage chamber side of the insulating block and an electrode lead terminal of an intermediate electrode fitted through a through hole of the insulating block. An ionization type smoke detector characterized by being provided with an FET storage section that stores the FET in an insulated and sealed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19637787U JPH01100294U (en) | 1987-12-24 | 1987-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19637787U JPH01100294U (en) | 1987-12-24 | 1987-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01100294U true JPH01100294U (en) | 1989-07-05 |
Family
ID=31486998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19637787U Pending JPH01100294U (en) | 1987-12-24 | 1987-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01100294U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6237394B2 (en) * | 1983-03-28 | 1987-08-12 | Ricoh Kk |
-
1987
- 1987-12-24 JP JP19637787U patent/JPH01100294U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6237394B2 (en) * | 1983-03-28 | 1987-08-12 | Ricoh Kk |
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