FLAME DETECTOR SHADING COVER

• Main Authors: MARUTA SATOSHI, NISHIKAWA KOHEI, KOMACHI ATSUSHI, TANAKA HIROYUKI, AKIYAMA NOBUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 14.10.2022
• Subjects: ALARM SYSTEMS; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

To provide a shading cover corresponding to a plurality of kinds of flame detectors different in an outer shape while protecting the flame detector being a mounting object and also preventing erroneous detection.SOLUTION: A flame detector shading cover 10 mounted on a flame detector so as to cover a front side of a detection window in order to prevent entrance of light from an outside includes: a first fitting ring 11A and a second fitting ring 11B respectively having an opening into which a housing of the flame detector can be loosely inserted; connection plates 12a-12d for connecting the fitting rings in parallel at a predetermined interval; and a shading plate 14 removably joined with an outer surface of the first fitting ring or the second fitting ring so as to block the opening, and formed of an opaque and rigid material. A handle 15 is arranged on a front surface of the shading plate. The first fitting ring and the second fitting ring include engagement parts to be engaged with predetermined parts of the housing when mounted on the flame detector. Leaf springs 17a-17d for suppressing a movement of the housing by contact with an outer surface of the housing are arranged on inner surfaces of the connection plates.SELECTED DRAWING: Figure 1 【課題】装着対象の炎検知器を保護しかつ誤検知を防止しつつ外形の異なる複数種類の炎検知器に対応する遮光カバーを提供する。【解決手段】炎検知器に装着されて外部からの光が入らないように検知窓の前方を覆うための炎検知器用遮光カバー１０おいて、炎検知器の筐体が遊挿可能な開口を各々有する第１嵌合用リング１１Ａ及び第２嵌合用リング１１Ｂと、これらの嵌合用リングを所定の間隔をおいて平行に連結する連結板１２ａ～１２ｄと、第１嵌合用リング又は第２嵌合用リングの外側面に着脱可能に結合されて開口を閉塞する、不透明で剛性を有する材料で形成された遮光プレート１４とを備える。遮光プレートの前面には、ハンドル１５が設けられる。第１嵌合用リング及び第２嵌合用リングは、炎検知器に装着された際に筐体の所定部位と係合する係合部を備える。連結板の内側面は、筐体の外側面に接触して筐体の移動を押さえる板バネ１７ａ～１７ｄを備える。【選択図】図１