JP7252743B2 - Element fixing structure - Google Patents

Element fixing structure Download PDF

Info

Publication number
JP7252743B2
JP7252743B2 JP2018224734A JP2018224734A JP7252743B2 JP 7252743 B2 JP7252743 B2 JP 7252743B2 JP 2018224734 A JP2018224734 A JP 2018224734A JP 2018224734 A JP2018224734 A JP 2018224734A JP 7252743 B2 JP7252743 B2 JP 7252743B2
Authority
JP
Japan
Prior art keywords
ultraviolet
detecting element
fixing structure
enclosing
ultraviolet detecting
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.)
Active
Application number
JP2018224734A
Other languages
Japanese (ja)
Other versions
JP2020087247A (en
Inventor
宏 金子
泰徳 大矢
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.)
Nittan Co Ltd
Original Assignee
Nittan Co 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 Nittan Co Ltd filed Critical Nittan Co Ltd
Priority to JP2018224734A priority Critical patent/JP7252743B2/en
Publication of JP2020087247A publication Critical patent/JP2020087247A/en
Application granted granted Critical
Publication of JP7252743B2 publication Critical patent/JP7252743B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Fire-Detection Mechanisms (AREA)

Description

本発明は、素子固定構造に関する。 The present invention relates to an element fixing structure.

従来、火災感知器において、紫外線検出素子を固定する素子固定構造が用いられている。特許文献１には、炎感知器において、ＵＶ管のガラス管が保持爪の間に挿入されることで保持爪の弾性力が働いて、偏平部と尖頭部が大形緩衝材と小形緩衝材を介して受け台上に圧接されている構造が開示されている。 2. Description of the Related Art Conventionally, an element fixing structure for fixing an ultraviolet detection element is used in a fire sensor. In Patent Document 1, in a flame sensor, the glass tube of the UV tube is inserted between the holding claws, and the elastic force of the holding claws acts, and the flat part and the pointed head are formed into a large cushioning material and a small cushioning material. A structure is disclosed that is pressed onto the cradle via a material.

特開平５－８１５７９号公報JP-A-5-81579

従来は、火災感知器に使用される紫外線検出素子の固定構造において、特許文献１に示すように、緩衝材を用いて抑え込み固定したり、接着剤で固定したりすることで、組立工数が増加してしまうという問題が生じていた。また、紫外線検出素子は、略円筒状のガラス管で覆われており、サイズのばらつきがある。よって、紫外線検出素子を、例えば接着剤で固定する場合、接着剤の塗布によって固定位置のばらつきが生じてしまうという問題が生じていた。また、紫外線検出素子には紫外線を検出できる視野角があり、不適切な向きや位置に固定してしまうと紫外線を検出できなかったり、検出できる視野角が狭まってしまい感知器の性能品質を損なってしまったりしてしまうという問題も生じていた。 Conventionally, in the fixing structure of the ultraviolet light detecting element used in the fire sensor, as shown in Patent Document 1, the number of assembly man-hours is increased by suppressing and fixing using a cushioning material or fixing with an adhesive. There was a problem of doing so. In addition, the ultraviolet detection element is covered with a substantially cylindrical glass tube and has variations in size. Therefore, when the ultraviolet detecting element is fixed with an adhesive, for example, there is a problem that the application of the adhesive causes variation in the fixed position. In addition, the UV detection element has a viewing angle that can detect UV rays, and if it is fixed in an inappropriate direction or position, UV rays cannot be detected or the viewing angle that can be detected is narrowed, impairing the performance quality of the sensor. There was also a problem that it would get stuck.

そこで、本発明はこれらの点に鑑みてなされたものであり、紫外線検出素子のサイズにばらつきがあっても固定位置が安定し、かつ組立工数が増加しづらい素子固定構造を提供することを目的とする。 Therefore, the present invention has been made in view of these points, and an object of the present invention is to provide an element fixing structure in which the fixing position is stable even if the size of the ultraviolet detecting element varies, and the number of assembly man-hours is less likely to increase. and

本発明の第１の態様においては、紫外線を検出することで火災を検出する火災感知器において、前記紫外線を検出する紫外線検出素子を固定する素子固定構造であって、前記紫外線検出素子が収容された状態で前記紫外線検出素子を包囲する包囲部と、弾性を有しており、前記包囲部に前記紫外線検出素子が収容された状態において、前記紫外線検出素子の少なくとも一部に接することで前記紫外線検出素子を位置の調整及び着脱ができるように挟持する挟持部と、を有することを特徴とする素子固定構造を提供する。 In a first aspect of the present invention, in a fire sensor that detects fire by detecting ultraviolet rays, there is provided an element fixing structure for fixing an ultraviolet detection element that detects the ultraviolet rays, wherein the ultraviolet detection element is accommodated. and an enclosing portion that surrounds the ultraviolet detecting element in a state in which the ultraviolet ray detecting element is in contact with at least a portion of the ultraviolet detecting element. An element fixing structure is provided, comprising: a clamping part for clamping a detection element so that the position of the detection element can be adjusted and the detection element can be attached and detached.

また、前記挟持部は、前記包囲部の長手方向の中心線に対して第１の側に設けられた第１爪と、前記中心線に対して前記第１の側に対向する第２の側に設けられた第２爪と、を有し、前記第１爪及び前記第２爪が前記中心線に向けて前記紫外線検出素子を押し付けることにより前記紫外線検出素子を位置の調整及び着脱ができるように挟持してもよい。 Further, the holding portion includes a first claw provided on a first side with respect to a longitudinal center line of the enclosing portion and a second claw provided on a second side facing the first side with respect to the center line. and a second claw provided on the second claw, wherein the first claw and the second claw press the ultraviolet detection element toward the center line so that the position of the ultraviolet detection element can be adjusted and the ultraviolet detection element can be attached and detached. may be sandwiched between

また、前記第１爪及び前記第２爪には穴が形成されていてもよい。また、前記挟持部の厚みは、前記包囲部の厚みよりも小さくてもよい。また、前記包囲部として、前記挟持部に対して前記紫外線検出素子の先端側において前記紫外線検出素子を包囲する第１包囲部と、前記挟持部に対して前記紫外線検出素子の先端側と反対の側において前記紫外線検出素子を包囲する第２包囲部と、を有していてもよい。 Further, holes may be formed in the first claw and the second claw. Moreover, the thickness of the holding portion may be smaller than the thickness of the surrounding portion. Further, as the enclosing portion, a first enclosing portion enclosing the ultraviolet detecting element on the tip end side of the ultraviolet detecting element with respect to the holding portion, and a first enclosing portion on the opposite end side of the ultraviolet detecting element with respect to the holding portion. and a second enclosing portion enclosing the ultraviolet detecting element on the side.

また、前記包囲部及び前記挟持部が設けられている本体部をさらに有し、前記第２包囲部の内側面と前記本体部とにより形成されている開口の面積は、前記第１包囲部の内側面と前記本体部とにより形成されている開口の面積よりも大きくてもよい。 Further, the apparatus further includes a main body portion provided with the enclosing portion and the holding portion, and the area of the opening formed by the inner side surface of the second enclosing portion and the main body portion is equal to that of the first enclosing portion. It may be larger than the area of the opening formed by the inner surface and the body portion.

また、前記挟持部が前記紫外線検出素子を挟持した状態において前記紫外線検出素子を覆い、かつ光を透過させる透過体と、前記透過体に対して発光する発光素子が挿入される挿入部と、をさらに有していてもよい。 Further, a transmissive body that covers the ultraviolet detecting element and transmits light in a state where the clamping part clamps the ultraviolet detecting element, and an inserting part into which a light emitting element that emits light to the transmissive body is inserted. You may have more.

本発明によれば、紫外線検出素子のサイズにばらつきがあっても固定位置が安定することで火災感知器の性能及び品質が向上し、かつ組立工数が増加しづらくなるという効果を奏する。 According to the present invention, the fixing position is stabilized even if the size of the ultraviolet detecting element varies, so that the performance and quality of the fire sensor are improved, and the number of assembly man-hours is less likely to increase.

本実施形態に係る火災感知器における素子固定構造付近の状態を示す。The state of the vicinity of the element fixing structure in the fire sensor according to the present embodiment is shown. 本実施形態に係る素子固定構造に紫外線検出素子が収容されている状態の正面図である。FIG. 4 is a front view of a state in which an ultraviolet detection element is housed in the element fixing structure according to the present embodiment; 本実施形態に係る素子固定構造に紫外線検出素子が収容されている状態の背面図である。FIG. 4 is a rear view of a state in which an ultraviolet detection element is accommodated in the element fixing structure according to the present embodiment; 本実施形態に係る素子固定構造に紫外線検出素子が収容されている状態の右側面図である。FIG. 4 is a right side view of a state in which an ultraviolet detection element is accommodated in the element fixing structure according to the present embodiment; 本実施形態に係る素子固定構造に紫外線検出素子が収容されている状態の左側面図である。FIG. 3 is a left side view of a state in which an ultraviolet detection element is accommodated in the element fixing structure according to the present embodiment; 図２のＡ－Ａ線断面図である。FIG. 3 is a cross-sectional view taken along line AA of FIG. 2; 本実施形態に係る素子固定構造の構造を示す。4 shows the structure of an element fixing structure according to the present embodiment; 本実施形態に係る素子固定構造の正面図である。1 is a front view of an element fixing structure according to this embodiment; FIG. 本実施形態に係る素子固定構造の背面図である。It is a rear view of the element fixing structure according to the present embodiment. 本実施形態に係る素子固定構造の右側面図である。It is a right view of the element fixing structure which concerns on this embodiment. 本実施形態に係る素子固定構造の左側面図である。It is a left view of the element fixing structure which concerns on this embodiment. 本実施形態に係る素子固定構造への紫外線検出素子の着脱方法を示す。A method for attaching and detaching an ultraviolet detection element to and from the element fixing structure according to the present embodiment will be shown. 本実施形態に係る火災感知器を構成する部材が分離された状態を示す。4 shows a state in which the members constituting the fire sensor according to the present embodiment are separated;

＜本実施形態＞
［本実施形態に係る火災感知器Ｓの概要］
図１は、本実施形態に係る火災感知器Ｓにおける素子固定構造２付近の状態を示す図である。図２は、本実施形態に係る素子固定構造２に紫外線検出素子１が収容されている状態の正面図である。図３は、本実施形態に係る素子固定構造２に紫外線検出素子１が収容されている状態の背面図である。図４は、本実施形態に係る素子固定構造２に紫外線検出素子１が収容されている状態の右側面図である。図５は、本実施形態に係る素子固定構造２に紫外線検出素子１が収容されている状態の左側面図である。図６は、図２のＡ－Ａ線断面図である。 <This embodiment>
[Outline of fire sensor S according to the present embodiment]
FIG. 1 is a diagram showing a state near an element fixing structure 2 in a fire sensor S according to this embodiment. FIG. 2 is a front view of a state in which the ultraviolet detecting element 1 is accommodated in the element fixing structure 2 according to this embodiment. FIG. 3 is a back view of the ultraviolet detecting element 1 accommodated in the element fixing structure 2 according to this embodiment. FIG. 4 is a right side view of a state in which the ultraviolet detecting element 1 is accommodated in the element fixing structure 2 according to this embodiment. FIG. 5 is a left side view of the ultraviolet detecting element 1 accommodated in the element fixing structure 2 according to this embodiment. 6 is a cross-sectional view taken along the line AA of FIG. 2. FIG.

火災感知器Ｓは、例えば建物内で発生した火災を感知する。火災感知器Ｓは、紫外線検出素子１、素子固定構造２、及びプリント基板３を有する。 The fire detector S senses a fire that has broken out, for example, in a building. A fire sensor S has an ultraviolet detection element 1 , an element fixing structure 2 and a printed circuit board 3 .

紫外線検出素子１は、例えば、ＵＶトロン（登録商標）である。紫外線検出素子１は、金属の光電効果とガス増倍効果を利用することで紫外線を検出する。紫外線検出素子１は、例えば、炎から放射される紫外線を検出することで、炎を検出することが可能である。紫外線検出素子１は、本体部１１、及び端子部１２を有する。本体部１１は、透明なガラス管の内側に、陽極及び陰極を含む複数の電極を有する。端子部１２は、例えば、陽極に接続されているリード線、及び陰極に接続されているリード線を有する。 The ultraviolet detection element 1 is, for example, UVTRON (registered trademark). The ultraviolet detection element 1 detects ultraviolet rays by utilizing the photoelectric effect of metal and the gas multiplication effect. The ultraviolet detection element 1 can detect a flame by detecting ultraviolet rays radiated from the flame, for example. The ultraviolet detection element 1 has a body portion 11 and terminal portions 12 . The body part 11 has a plurality of electrodes including an anode and a cathode inside a transparent glass tube. The terminal section 12 has, for example, a lead wire connected to the anode and a lead wire connected to the cathode.

素子固定構造２は、紫外線検出素子１を固定する。具体的には、素子固定構造２は、紫外線検出素子１を、例えばプリント基板３上の所定の位置に固定する。素子固定構造２は、例えば樹脂により形成されているが、素子固定構造２の材質は任意である。素子固定構造２の詳細は後述する。プリント基板３には、素子固定構造２が固定されており、かつ紫外線検出素子１が出力する信号に基づいて火災を感知する回路が搭載されている。 The element fixing structure 2 fixes the ultraviolet detecting element 1 . Specifically, the element fixing structure 2 fixes the ultraviolet detecting element 1 to a predetermined position on the printed circuit board 3, for example. The element fixing structure 2 is made of resin, for example, but the material of the element fixing structure 2 is arbitrary. Details of the element fixing structure 2 will be described later. The element fixing structure 2 is fixed to the printed circuit board 3, and a circuit for detecting fire based on the signal output by the ultraviolet detection element 1 is mounted.

［素子固定構造２の構造］
図７は、本実施形態に係る素子固定構造２の構造を示す図である。図７（ａ）は、本実施形態に係る素子固定構造２を正面側から見た構造を示す図である。図７（ｂ）は、本実施形態に係る素子固定構造２を背面側から見た構造を示す図である。 [Structure of Element Fixing Structure 2]
FIG. 7 is a diagram showing the structure of the element fixing structure 2 according to this embodiment. FIG. 7(a) is a diagram showing the structure of the element fixing structure 2 according to this embodiment viewed from the front side. FIG. 7(b) is a diagram showing the structure of the element fixing structure 2 according to this embodiment as seen from the rear side.

図８は、本実施形態に係る素子固定構造２の正面図である。図９は、本実施形態に係る素子固定構造２の背面図である。図１０は、本実施形態に係る素子固定構造２の右側面図である。図１１は、本実施形態に係る素子固定構造２の左側面図である。 FIG. 8 is a front view of the element fixing structure 2 according to this embodiment. FIG. 9 is a rear view of the element fixing structure 2 according to this embodiment. FIG. 10 is a right side view of the element fixing structure 2 according to this embodiment. FIG. 11 is a left side view of the element fixing structure 2 according to this embodiment.

素子固定構造２は、本体部２１、包囲部２２、挟持部２３、固定部２４、及び挿入部２５を有する。本体部２１は、包囲部２２及び挟持部２３が設けられている部位である。本体部２１は、素子固定構造２に紫外線検出素子１が収容された状態において、紫外線検出素子１に対して、後述する包囲部２２及び挟持部２３が位置する側とは反対側に位置する部位を有する。具体的には、本体部２１は、例えば、素子固定構造２が紫外線検出素子１を収容した状態でプリント基板３に固定された状態において、紫外線検出素子１のプリント基板３側とは反対側に位置する部位である。 The element fixing structure 2 has a body portion 21 , an enclosing portion 22 , a holding portion 23 , a fixing portion 24 and an insertion portion 25 . The body portion 21 is a portion where the enclosing portion 22 and the holding portion 23 are provided. The body portion 21 is a portion located on the opposite side of the ultraviolet detecting element 1 to the side on which the enclosing portion 22 and the sandwiching portion 23, which will be described later, are located, when the ultraviolet detecting element 1 is accommodated in the element fixing structure 2. have Specifically, for example, in a state where the element fixing structure 2 is fixed to the printed circuit board 3 in a state in which the ultraviolet detecting element 1 is accommodated, the main body part 21 is arranged on the side opposite to the printed circuit board 3 side of the ultraviolet detecting element 1. It is the part where it is located.

本体部２１は、開口部２１１を有する。開口部２１１は、紫外線検出素子１が素子固定構造２に収容された状態において、紫外線検出素子１の本体部１１の少なくとも一部の領域を露出するための開口である。当該本体部１１の少なくとも一部の領域には、紫外線検出素子１の本体部１１に収容されている複数の電極の先端付近の領域が含まれる。紫外線検出素子１は、開口部２１１を通して入射した紫外線を検出する。 The body portion 21 has an opening portion 211 . The opening 211 is an opening for exposing at least a part of the main body 11 of the ultraviolet detecting element 1 when the ultraviolet detecting element 1 is accommodated in the element fixing structure 2 . At least a partial region of the body portion 11 includes regions near the tips of the plurality of electrodes accommodated in the body portion 11 of the ultraviolet detecting element 1 . The ultraviolet detection element 1 detects ultraviolet rays incident through the opening 211 .

包囲部２２は、紫外線検出素子１が収容された状態で紫外線検出素子１を包囲する。包囲部２２は、紫外線検出素子１が素子固定構造２に収容された状態において、本体部２１の紫外線検出素子１側の面に設けられている。包囲部２２は、素子固定構造２に紫外線検出素子１が収容された状態において、紫外線検出素子１の一部の領域を覆う。 The enclosing part 22 surrounds the ultraviolet detecting element 1 in a state in which the ultraviolet detecting element 1 is housed. The surrounding portion 22 is provided on the surface of the body portion 21 on the side of the ultraviolet detecting element 1 when the ultraviolet detecting element 1 is accommodated in the element fixing structure 2 . The enclosing part 22 partially covers the ultraviolet detecting element 1 when the ultraviolet detecting element 1 is accommodated in the element fixing structure 2 .

包囲部２２は、紫外線検出素子１が素子固定構造２に収容された状態において、紫外線検出素子１を本体部２１側とは反対側から囲うようにして覆っている部位である。包囲部２２は、例えば、素子固定構造２が紫外線検出素子１を収容した状態でプリント基板３に固定された状態において、紫外線検出素子１のプリント基板３側の面の一部の領域を覆う部位である。 The enclosing part 22 is a part that surrounds and covers the ultraviolet detecting element 1 from the side opposite to the body part 21 side when the ultraviolet detecting element 1 is accommodated in the element fixing structure 2 . The enclosing part 22 is a part that covers a part of the surface of the ultraviolet detection element 1 on the printed circuit board 3 side, for example, in a state where the element fixing structure 2 accommodates the ultraviolet detection element 1 and is fixed to the printed circuit board 3 . is.

包囲部２２の本体部２１側の端部は、本体部２１の包囲部２２側の面に固定されている。具体的には、包囲部２２は、包囲部２２の長手方向の中心線に対して両側において、本体部２１の下面に固定されている。素子固定構造２は、このような包囲部２２を有することで、紫外線検出素子１が素子固定構造２に収容された状態において、紫外線検出素子１の一部の領域を覆うことができる。具体的には、素子固定構造２は、このような包囲部２２を有することで、紫外線検出素子１が素子固定構造２に収容された状態において、本体部２１とは反対側の領域の一部の領域を覆うことができる。 The end portion of the enclosing portion 22 on the main body portion 21 side is fixed to the surface of the main body portion 21 on the enclosing portion 22 side. Specifically, the enclosing part 22 is fixed to the lower surface of the main body part 21 on both sides of the longitudinal centerline of the enclosing part 22 . Since the element fixing structure 2 has such an enclosing part 22 , a part of the ultraviolet detecting element 1 can be covered when the ultraviolet detecting element 1 is accommodated in the element fixing structure 2 . Specifically, since the element fixing structure 2 has the enclosing part 22 as described above, in a state where the ultraviolet detecting element 1 is accommodated in the element fixing structure 2, a part of the region opposite to the main body part 21 is formed. area can be covered.

素子固定構造２が包囲部２２を有することで、紫外線検出素子１を挟持部２３に挿入する際に紫外線検出素子１を挿入する方向が定まるので、紫外線検出素子１を挟持部２３に挿入し易くなる。また、素子固定構造２が包囲部２２を有することで、紫外線検出素子１の位置が大きくずれないので、紫外線検出素子１の位置を微調整し易くすることができる。 Since the element fixing structure 2 has the enclosing portion 22, the direction in which the ultraviolet detecting element 1 is inserted when inserting the ultraviolet detecting element 1 into the clamping portion 23 is determined. Become. In addition, since the element fixing structure 2 has the surrounding portion 22, the position of the ultraviolet detecting element 1 does not deviate greatly, so that the position of the ultraviolet detecting element 1 can be easily finely adjusted.

また、素子固定構造２が包囲部２２を有することで、紫外線検出素子１が素子固定構造２に収容された状態において紫外線検出素子１が移動して、例えば素子固定構造２の本体部２１又はプリント基板３に接触することで、紫外線検出素子１に衝撃や振動が加えられるのを妨げ、紫外線検出素子１を保護することができる。また、素子固定構造２が包囲部２２を有することで、紫外線検出素子１にごみが付着しづらくなり、紫外線検出素子１による検出精度を向上させることができる。 In addition, since the element fixing structure 2 has the enclosing part 22, the ultraviolet detecting element 1 moves in a state in which the ultraviolet detecting element 1 is housed in the element fixing structure 2, and for example, the main body part 21 of the element fixing structure 2 or the printed part. By contacting the substrate 3, the ultraviolet detecting element 1 can be prevented from being subjected to impact or vibration, and the ultraviolet detecting element 1 can be protected. In addition, since the element fixing structure 2 has the enclosing part 22, it becomes difficult for dust to adhere to the ultraviolet detecting element 1, and the detection accuracy of the ultraviolet detecting element 1 can be improved.

包囲部２２の長手方向における一端側には、本体部２１との間に入口側開口が形成されている。包囲部２２の長手方向における他端側には、本体部２１との間に出口側開口が形成されている。入口側開口と出口側開口との間には、紫外線検出素子１が貫通する空間が形成されている。 An inlet-side opening is formed between the enclosing part 22 and the main body part 21 on one end side in the longitudinal direction. An outlet-side opening is formed between the surrounding portion 22 and the main body portion 21 on the other end side in the longitudinal direction. A space through which the ultraviolet detection element 1 penetrates is formed between the entrance side opening and the exit side opening.

素子固定構造２は、包囲部２２として、第１包囲部２２１、及び第２包囲部２２２を有する。第１包囲部２２１は、後述する挟持部２３に対して紫外線検出素子１の先端側において紫外線検出素子１を包囲する。第１包囲部２２１の長手方向における両側には、本体部２１との間に開口が形成されている。 The element fixing structure 2 has a first enclosing portion 221 and a second enclosing portion 222 as the enclosing portion 22 . The first surrounding portion 221 surrounds the ultraviolet detecting element 1 on the distal end side of the ultraviolet detecting element 1 with respect to a holding portion 23 to be described later. Openings are formed between the main body portion 21 and both sides of the first enclosing portion 221 in the longitudinal direction.

具体的には、第１包囲部２２１の長手方向における挟持部２３側には、本体部２１との間に第１入口側開口Ｈ１が形成されている。第１包囲部２２１の長手方向における挟持部２３側とは反対側には、本体部２１との間に第１出口側開口Ｈ２が形成されている。 Specifically, a first inlet side opening H1 is formed between the main body portion 21 and the holding portion 23 side in the longitudinal direction of the first surrounding portion 221 . A first outlet-side opening H2 is formed between the first surrounding portion 221 and the body portion 21 on the side opposite to the holding portion 23 side in the longitudinal direction.

第２包囲部２２２は、後述する挟持部２３に対して紫外線検出素子１の先端側と反対の側において紫外線検出素子１を包囲する。第２包囲部２２２の長手方向における両側には、本体部２１との間に開口が形成されている。 The second surrounding portion 222 surrounds the ultraviolet detecting element 1 on the side opposite to the tip end side of the ultraviolet detecting element 1 with respect to the later-described holding portion 23 . Openings are formed between the main body portion 21 and both sides of the second enclosing portion 222 in the longitudinal direction.

具体的には、第２包囲部２２２の長手方向における挟持部２３側とは反対側には、本体部２１との間に第２入口側開口Ｈ３が形成されている。第２包囲部２２２の長手方向における挟持部２３側には、本体部２１との間に第２出口側開口Ｈ４が形成されている。 Specifically, a second inlet side opening H3 is formed between the second surrounding portion 222 and the body portion 21 on the side opposite to the holding portion 23 side in the longitudinal direction. A second outlet side opening H4 is formed between the second enclosing part 222 and the main body part 21 on the holding part 23 side in the longitudinal direction.

第２包囲部２２２の内側面と本体部２１とにより形成されている開口の面積は、第１包囲部２２１の内側面と本体部２１とにより形成されている開口の面積よりも大きい。当該開口の面積は、包囲部２２の長手方向と直交して延在する平面上における、当該平面と包囲部２２の内側面との交線と、当該平面と本体部２１の下面との交線と、で囲まれる領域の面積である。具体的には、例えば、第２包囲部２２２の内側面と本体部２１とにより形成されている第２入口側開口Ｈ３及び第２出口側開口Ｈ４の面積は、第１包囲部２２１の内側面と本体部２１とにより形成されている第１出口側開口Ｈ２の面積よりも大きい。 The area of the opening formed by the inner surface of the second enclosing portion 222 and the main body portion 21 is larger than the area of the opening formed by the inner surface of the first enclosing portion 221 and the main body portion 21 . The area of the opening is defined by a line of intersection between the plane extending perpendicular to the longitudinal direction of the enclosing portion 22 and the inner surface of the enclosing portion 22 and a line of intersection between the plane and the lower surface of the main body portion 21. and is the area of the region surrounded by Specifically, for example, the area of the second inlet-side opening H3 and the second outlet-side opening H4 formed by the inner surface of the second enclosing part 222 and the main body part 21 is equal to the inner surface of the first enclosing part 221. is larger than the area of the first outlet side opening H2 formed by the main body portion 21 and the main body portion 21 .

素子固定構造２は、このような構造を有することで、例えば、第２包囲部２２２の内側面と本体部２１とにより形成されている開口の面積が、紫外線検出素子１の本体部１１の断面積よりも若干大きく、第１包囲部２２１の内側面と本体部２１とにより形成されている開口の面積が、紫外線検出素子１の本体部１１の断面積よりも若干小さい。すなわち、素子固定構造２は、紫外線検出素子１を包囲部２２に一方向のみから挿入可能な構造となっている。この結果、素子固定構造２は、紫外線検出素子１を素子固定構造２の包囲部２２の内側に差し込んで収容する際に、火災感知器Ｓの製造者が紫外線検出素子１を差し込む向きを間違えづらくなる。 The element fixing structure 2 has such a structure, so that, for example, the area of the opening formed by the inner side surface of the second enclosing part 222 and the main body part 21 is the cross section of the main body part 11 of the ultraviolet detecting element 1 . The area of the opening formed by the inner surface of the first enclosing part 221 and the body part 21 is slightly larger than the cross-sectional area of the body part 11 of the ultraviolet detection element 1 . That is, the element fixing structure 2 has a structure in which the ultraviolet detecting element 1 can be inserted into the surrounding portion 22 from only one direction. As a result, when the element fixing structure 2 inserts and accommodates the ultraviolet detecting element 1 inside the enclosing part 22 of the element fixing structure 2, the manufacturer of the fire sensor S is unlikely to make a mistake in inserting the ultraviolet detecting element 1. Become.

挟持部２３は、弾性を有しており、包囲部２２に紫外線検出素子１が収容された状態において、紫外線検出素子１の少なくとも一部に接することで紫外線検出素子１を位置の調整及び着脱ができるように挟持する。挟持部２３の厚みは、包囲部２２の厚みよりも小さい。素子固定構造２は、このように挟持部２３の厚みが包囲部２２の厚みよりも小さいことで、例えば、後述する第１爪２３１及び第２爪２３３が、適度な弾性力を生じるようにすることができる。適度な弾性力とは、例えば、第１爪２３１及び第２爪２３３の内側において、紫外線検出素子１に過度な力が加えられることなく、紫外線検出素子１の抜き差しが可能となるような弾性力である。 The clamping portion 23 has elasticity, and when the ultraviolet detecting element 1 is housed in the enclosing portion 22, the ultraviolet detecting element 1 can be adjusted in position and attached/detached by contacting at least a part of the ultraviolet detecting element 1. Hold as much as possible. The thickness of the sandwiching portion 23 is smaller than the thickness of the surrounding portion 22 . In the element fixing structure 2, since the thickness of the holding portion 23 is smaller than the thickness of the enclosing portion 22, for example, a first claw 231 and a second claw 233, which will be described later, generate an appropriate elastic force. be able to. The appropriate elastic force is, for example, an elastic force that allows the ultraviolet detection element 1 to be inserted and removed without excessive force being applied to the ultraviolet detection element 1 inside the first claw 231 and the second claw 233 . is.

挟持部２３は、第１爪２３１、及び第２爪２３３を有する。第１爪２３１は、包囲部２２の長手方向の中心線に対して第１の側に設けられている。第１爪２３１は、例えば湾曲形状の領域を有する。第１爪２３１の一端は、本体部２１の第１爪２３１が設けられている側の面に固定されており、第１爪２３１の他端は、例えば、素子固定構造２に紫外線検出素子１が収容された状態における紫外線検出素子１の本体部２１側とは反対側の端部付近に位置している。第１爪２３１の他端における内側面には、例えば突起部が形成されている。 The holding portion 23 has a first claw 231 and a second claw 233 . The first claw 231 is provided on the first side with respect to the longitudinal centerline of the surrounding portion 22 . The first claw 231 has, for example, a curved region. One end of the first claw 231 is fixed to the surface of the body portion 21 on the side where the first claw 231 is provided, and the other end of the first claw 231 is attached to the element fixing structure 2, for example. is located near the end of the ultraviolet detecting element 1 opposite to the main body 21 side in the state in which the is housed. For example, a protrusion is formed on the inner surface of the other end of the first claw 231 .

第２爪２３３は、包囲部２２の長手方向の中心線に対して第１の側に対向する第２の側に設けられている。第２爪２３３は、例えば湾曲形状の領域を有する。第２爪２３３の一端は、本体部２１の第２爪２３３が設けられている側の面に固定されており、第２爪２３３の他端は、例えば、素子固定構造２に紫外線検出素子１が収容された状態における紫外線検出素子１の本体部２１側とは反対側の端部付近に位置している。第２爪２３３の他端における内側面には、例えば突起部が形成されている。第１爪２３１の他端と第２爪２３３の他端との間には、若干の隙間が形成されている。 The second claw 233 is provided on the second side facing the first side with respect to the longitudinal centerline of the surrounding portion 22 . The second claw 233 has, for example, a curved region. One end of the second claw 233 is fixed to the surface of the main body 21 on which the second claw 233 is provided, and the other end of the second claw 233 is attached to the element fixing structure 2, for example. is located near the end of the ultraviolet detecting element 1 opposite to the main body 21 side in the state in which the is housed. For example, a protrusion is formed on the inner surface of the other end of the second claw 233 . A slight gap is formed between the other end of the first claw 231 and the other end of the second claw 233 .

挟持部２３は、第１爪２３１及び第２爪２３３が包囲部２２の長手方向の中心線に向けて紫外線検出素子１を押し付けることにより紫外線検出素子１を位置の調整及び着脱ができるように挟持する。よって、紫外線検出素子１は、第１爪２３１及び第２爪２３３によって紫外線検出素子１の長手方向と直交する短手方向における両側から挟まれることで、素子固定構造２に保持されることができる。 The clamping portion 23 clamps the ultraviolet detecting element 1 by pressing the ultraviolet detecting element 1 toward the center line in the longitudinal direction of the enclosing portion 22 with the first claws 231 and the second claws 233 so that the ultraviolet detecting element 1 can be adjusted in position and attached/detached. do. Therefore, the ultraviolet detecting element 1 can be held by the element fixing structure 2 by being sandwiched from both sides in the short direction orthogonal to the longitudinal direction of the ultraviolet detecting element 1 by the first claws 231 and the second claws 233 . .

なお、第１爪２３１及び第２爪２３３に突起部が形成されていることにより、突起部が紫外線検出素子１に接触し、第１爪２３１及び第２爪２３３の湾曲形状の領域の少なくとも一部が紫外線検出素子１に接触しないように構成される。その結果、素子固定構造２は、紫外線検出素子１を位置の調整及び着脱をし易い構造となっている。 In addition, since the projections are formed on the first claw 231 and the second claw 233, the projections come into contact with the ultraviolet detecting element 1, and at least one of the curved regions of the first claw 231 and the second claw 233 is exposed. It is configured so that the portion does not come into contact with the ultraviolet detecting element 1 . As a result, the element fixing structure 2 has a structure in which the position of the ultraviolet detecting element 1 can be easily adjusted and the attachment and detachment can be easily performed.

第１爪２３１及び第２爪２３３には穴が形成されていてもよい。具体的には、第１爪２３１には、第１の穴２３２が形成されている。第２爪２３３には、第２の穴２３４が形成されている。素子固定構造２は、このように、第１爪２３１及び第２爪２３３に穴が形成されていることで、第１爪２３１及び第２爪２３３が、適度な弾性力を生じるようにすることができる。適度な弾性力とは、例えば、第１爪２３１及び第２爪２３３の内側において、紫外線検出素子１に過度な力が加えられることなく、紫外線検出素子１の抜き差しが可能に固定できる保持力を有する弾性力である。 A hole may be formed in the first claw 231 and the second claw 233 . Specifically, a first hole 232 is formed in the first claw 231 . A second hole 234 is formed in the second claw 233 . In the element fixing structure 2, holes are formed in the first claws 231 and the second claws 233, so that the first claws 231 and the second claws 233 generate appropriate elastic force. can be done. Appropriate elastic force means, for example, a holding force capable of fixing the ultraviolet detecting element 1 so that it can be inserted and removed without excessive force being applied to the ultraviolet detecting element 1 inside the first claw 231 and the second claw 233 . elastic force.

固定部２４は、素子固定構造２をプリント基板３に固定するための部位である。固定部２４は、例えば円柱形状である。固定部２４の一端は、本体部２１の下面に固定されており、固定部２４の他端は、プリント基板３に固定されている。素子固定構造２においては、例えば、４本の固定部２４が、本体部２１の外縁付近の下面に設けられている。 The fixing part 24 is a part for fixing the element fixing structure 2 to the printed circuit board 3 . The fixed part 24 has, for example, a cylindrical shape. One end of the fixed portion 24 is fixed to the lower surface of the main body portion 21 , and the other end of the fixed portion 24 is fixed to the printed circuit board 3 . In the element fixing structure 2, for example, four fixing portions 24 are provided on the lower surface near the outer edge of the main body portion 21. As shown in FIG.

挿入部２５は、発光素子が挿入される部位である。発光素子は、例えばＬＥＤである。発光素子は、後述する透光体４に対して発光する。挿入部２５は、本体部２１の包囲部２２及び挟持部２３が設けられている側に設けられている。挿入部２５には、挿入部２５の長手方向において貫通する穴が形成されている。当該穴には、発光素子が挿入されている。 The insertion portion 25 is a portion into which the light emitting element is inserted. A light emitting element is, for example, an LED. The light emitting element emits light to a transparent body 4 which will be described later. The insertion portion 25 is provided on the side of the body portion 21 on which the enclosing portion 22 and the sandwiching portion 23 are provided. The insertion portion 25 is formed with a hole penetrating in the longitudinal direction of the insertion portion 25 . A light-emitting element is inserted into the hole.

［素子固定構造２に対する紫外線検出素子１の着脱方法］
図１２は、本実施形態に係る素子固定構造２への紫外線検出素子１の着脱方法を示す図である。図１２（ａ）は、素子固定構造２と紫外線検出素子１が分離された状態を示す図である。図１２（ｂ）は、素子固定構造２に紫外線検出素子１が収容された状態を示す図である。 [Method for attaching/detaching UV detection element 1 to/from element fixing structure 2]
12A and 12B are diagrams showing a method for attaching and detaching the ultraviolet detection element 1 to and from the element fixing structure 2 according to this embodiment. FIG. 12(a) is a diagram showing a state in which the element fixing structure 2 and the ultraviolet detection element 1 are separated. FIG. 12(b) is a diagram showing a state in which the ultraviolet detecting element 1 is accommodated in the element fixing structure 2. As shown in FIG.

まず、ユーザは、紫外線検出素子１と素子固定構造２を準備する。そして、ユーザは、紫外線検出素子１の本体部１１の先端を、素子固定構造２の第２包囲部２２２に向ける。そして、ユーザは、紫外線検出素子１の本体部１１の先端を、素子固定構造２の第２包囲部２２２の内側から第１包囲部２２１の内側に向かって移動させて、本体部１１の先端が第１包囲部２２１の長手方向における挟持部２３とは反対側の端部から若干突出する位置になるまで、紫外線検出素子１を包囲部２２の内側に差し込む。 First, the user prepares the ultraviolet detection element 1 and the element fixing structure 2 . Then, the user directs the tip of the body portion 11 of the ultraviolet detecting element 1 toward the second surrounding portion 222 of the element fixing structure 2 . Then, the user moves the tip of the body portion 11 of the ultraviolet detecting element 1 from the inside of the second enclosing portion 222 toward the inside of the first enclosing portion 221 of the element fixing structure 2 so that the tip of the body portion 11 The ultraviolet detecting element 1 is inserted into the enclosing part 22 until it slightly protrudes from the end of the first enclosing part 221 opposite to the holding part 23 in the longitudinal direction.

このとき、挟持部２３は、挟持部２３の内側に紫外線検出素子１の本体部１１が挿入されることで、紫外線検出素子１の本体部１１によって、若干、外側に向かって押し広げられる。そして、挟持部２３は、挟持部２３の弾性力によって、紫外線検出素子１を外側から押すことで、紫外線検出素子１の本体部１１を挟持している。このようにして、ユーザは、紫外線検出素子１を素子固定構造２に収容することができる。 At this time, the holding portion 23 is slightly pushed outward by the body portion 11 of the ultraviolet detecting element 1 by inserting the body portion 11 of the ultraviolet detecting element 1 inside the holding portion 23 . The clamping portion 23 clamps the body portion 11 of the ultraviolet detecting element 1 by pushing the ultraviolet detecting element 1 from the outside with the elastic force of the clamping portion 23 . In this manner, the user can accommodate the ultraviolet detection element 1 in the element fixing structure 2 .

一方、ユーザは、紫外線検出素子１を素子固定構造２から取り外す際には、紫外線検出素子１を第１包囲部２２１側から第２包囲部２２２側に向かって移動させて包囲部２２の内側から引き抜くことで、紫外線検出素子１を素子固定構造２から取り外すことができる。 On the other hand, when the user removes the ultraviolet detection element 1 from the element fixing structure 2 , the user moves the ultraviolet detection element 1 from the first enclosing part 221 side toward the second enclosing part 222 side and removes it from the inside of the enclosing part 22 . The ultraviolet detection element 1 can be removed from the element fixing structure 2 by pulling it out.

このように、素子固定構造２は、素子固定構造２に紫外線検出素子１を着脱するために、紫外線検出素子１を素子固定構造２に向かって側方から包囲部２２の内側に抜き差しすることが可能である。よって、素子固定構造２は、紫外線検出素子１を素子固定構造２に着脱する際に、素子固定構造２を分解又は結合したり、接着剤を使用したりする必要がなく、紫外線検出素子１の素子固定構造２に対する位置の調整及び着脱が容易である。 In this manner, in order to attach and detach the ultraviolet detection element 1 to and from the element fixing structure 2 , the ultraviolet detection element 1 can be inserted into and removed from the enclosing part 22 from the side of the element fixing structure 2 . It is possible. Therefore, the element fixing structure 2 does not require disassembling or joining the element fixing structure 2 or using an adhesive when the ultraviolet detecting element 1 is attached to or detached from the element fixing structure 2 . Position adjustment and attachment/detachment with respect to the element fixing structure 2 are easy.

図１３は、本実施形態に係る火災感知器Ｓを構成する部材が分離された状態を示す図である。火災感知器Ｓは、透光体４、光ガイド部５、ガイドサポート６、本体７、及びカバー体８を有する。 FIG. 13 is a diagram showing a state in which the members constituting the fire sensor S according to this embodiment are separated. The fire sensor S has a translucent body 4 , a light guide portion 5 , a guide support 6 , a main body 7 and a cover body 8 .

透光体４は、挟持部２３が紫外線検出素子１を挟持した状態において紫外線検出素子１を覆う。透光体４は、光を透過させる透過体である。透光体４は、例えば透明なプラスチック又はガラスで製造されている。透光体４は、素子固定構造２の本体部２１の開口部２１１を覆った状態で、本体部２１に設けられている。 The translucent body 4 covers the ultraviolet detecting element 1 in a state where the holding portion 23 holds the ultraviolet detecting element 1 therebetween. The transparent body 4 is a transparent body that transmits light. The translucent body 4 is made of transparent plastic or glass, for example. The translucent body 4 is provided on the main body 21 of the element fixing structure 2 while covering the opening 211 of the main body 21 .

光ガイド部５は、発光素子が発光した光のうち透光体４を透過した光をプリント基板３に搭載された受光素子に導く機能を有する。ガイドサポート６は、光ガイド部５を後述する本体７に固定する。 The light guide portion 5 has a function of guiding light transmitted through the transparent body 4 among the light emitted by the light emitting element to the light receiving element mounted on the printed circuit board 3 . The guide support 6 fixes the light guide portion 5 to the main body 7 which will be described later.

本体７は、プリント基板３、及びガイドサポート６が固定される。カバー体８は、紫外線検出素子１、素子固定構造２、プリント基板３、透光体４、光ガイド部５、及びガイドサポート６を覆った状態で、本体７に固定されている。カバー体８には、開口部が形成されており、当該開口部を通して、紫外線検出素子１に紫外線が入射する。 The printed circuit board 3 and the guide support 6 are fixed to the main body 7 . The cover body 8 is fixed to the main body 7 while covering the ultraviolet detection element 1 , the element fixing structure 2 , the printed circuit board 3 , the transparent body 4 , the light guide section 5 and the guide support 6 . An opening is formed in the cover body 8, and ultraviolet light enters the ultraviolet detecting element 1 through the opening.

火災感知器Ｓは、素子固定構造２の挿入部２５に挿入されている発光素子が透光体４に対して発光した光が、透光体４を透過して、光ガイド部５によってプリント基板３に搭載されている受光素子に導かれる。受光素子は、当該受光素子に導かれた光を検出する。プリント基板３には、制御部（例えばＣＰＵ）も搭載されており、制御部は、受光素子によって検出された光の強度を計測し、当該計測された光の強度が閾値以上であるか否かを判定する。当該閾値は、例えば透光体４が汚れているか否かを判定するために設定された値である。 In the fire sensor S, the light emitted from the light emitting element inserted in the insertion portion 25 of the element fixing structure 2 to the translucent body 4 passes through the translucent body 4 and is transmitted by the light guide portion 5 to the printed circuit board. It is guided to the light receiving element mounted on 3. The light receiving element detects light guided to the light receiving element. A control unit (for example, a CPU) is also mounted on the printed circuit board 3. The control unit measures the intensity of light detected by the light receiving element, and determines whether the measured intensity of light is equal to or greater than a threshold. judge. The threshold is, for example, a value set for determining whether or not the translucent body 4 is dirty.

火災感知器Ｓは、このような構造を有することで、透光体４が汚れているか否かを判定することができる。火災感知器Ｓは、このように透光体４が汚れているか否かを判定する構造を有することで、検出精度の低下を監視すると共に、不良原因が汚れであると判断できるのでメンテナンス性が向上する。 Having such a structure, the fire sensor S can determine whether or not the translucent body 4 is dirty. Since the fire sensor S has such a structure for determining whether or not the translucent body 4 is dirty, it is possible to monitor a decrease in detection accuracy and to determine that the cause of the failure is the dirt, so maintainability is improved. improves.

［変形例］
上記実施形態においては、第１爪２３１及び第２爪２３３は共に弾性を有するとしたが、これに限定されない。第１爪２３１及び第２爪２３３のうちの少なくとも一方が弾性を有していてもよい。 [Modification]
Although both the first claw 231 and the second claw 233 have elasticity in the above embodiment, the present invention is not limited to this. At least one of the first claw 231 and the second claw 233 may have elasticity.

また、上記実施形態においては、挟持部２３は、第１爪２３１及び第２爪２３３を有し、素子固定構造２は、第１爪２３１及び第２爪２３３が包囲部２２の長手方向の中心線に向けて紫外線検出素子１を押し付けることにより紫外線検出素子１を保持する例を示したが、これに限定されない。 In the above embodiment, the holding portion 23 has the first claw 231 and the second claw 233, and the element fixing structure 2 has the first claw 231 and the second claw 233 at the center of the enclosing portion 22 in the longitudinal direction. Although an example of holding the ultraviolet detecting element 1 by pressing the ultraviolet detecting element 1 toward the line has been shown, the present invention is not limited to this.

素子固定構造２は、第１爪２３１、及び第２爪２３３が本体部２１に向けて紫外線検出素子１を押し付けることにより紫外線検出素子１を挟持するようにしてもよい。この場合、素子固定構造２は、本体部２１、第１爪２３１、及び第２爪２３３によって紫外線検出素子１を挟持することで、紫外線検出素子１を保持している。 The element fixing structure 2 may sandwich the ultraviolet detecting element 1 by pressing the ultraviolet detecting element 1 against the body portion 21 with the first claws 231 and the second claws 233 . In this case, the element fixing structure 2 holds the ultraviolet detecting element 1 by sandwiching the ultraviolet detecting element 1 with the body portion 21 , the first claws 231 and the second claws 233 .

また、上記実施形態においては、挟持部２３は、第１爪２３１及び第２爪２３３を有している例を示したが、これに限定されない。挟持部２３は、第１爪２３１及び第２爪２３３のうちのいずれか一方のみの爪を有していてもよい。この場合、素子固定構造２は、本体部２１と、第１爪２３１及び第２爪２３３のうちのいずれか一方のみの爪によって紫外線検出素子１を挟持することで、紫外線検出素子１を保持している。 Moreover, in the above-described embodiment, an example in which the holding portion 23 has the first claw 231 and the second claw 233 is shown, but the present invention is not limited to this. The holding portion 23 may have only one of the first claw 231 and the second claw 233 . In this case, the element fixing structure 2 holds the ultraviolet detecting element 1 by sandwiching the ultraviolet detecting element 1 between the body portion 21 and only one of the first claws 231 and the second claws 233 . ing.

［本実施形態に係る素子固定構造２による効果］
本実施形態に係る素子固定構造２は、紫外線を検出することで火災を検出する火災感知器Ｓにおいて、紫外線を検出する紫外線検出素子１を固定する素子固定構造２であって、紫外線検出素子１が収容された状態で紫外線検出素子１を包囲する包囲部２２と、弾性を有しており、包囲部２２に紫外線検出素子１が収容された状態において、紫外線検出素子１の少なくとも一部に接することで紫外線検出素子１を位置の調整及び着脱ができるように挟持する挟持部２３と、を有する。 [Effects of the element fixing structure 2 according to the present embodiment]
An element fixing structure 2 according to the present embodiment is an element fixing structure 2 for fixing an ultraviolet detection element 1 that detects ultraviolet rays in a fire sensor S that detects a fire by detecting ultraviolet rays. and an enclosing portion 22 that surrounds the ultraviolet detecting element 1 in a state in which the ultraviolet detecting element 1 is accommodated, and has elasticity, and is in contact with at least a portion of the ultraviolet detecting element 1 in a state in which the ultraviolet detecting element 1 is accommodated in the enclosing portion 22. and a clamping portion 23 that clamps the ultraviolet detecting element 1 so that the position thereof can be adjusted and the ultraviolet detecting element 1 can be attached and detached.

本実施形態に係る素子固定構造２は、このように紫外線検出素子１が収容された状態で紫外線検出素子１を包囲する包囲部２２を有することで、紫外線検出素子１を挟持部２３に挿入する際に紫外線検出素子１を挿入する方向が定まるので、紫外線検出素子１を挟持部２３に挿入し易くなる。また、素子固定構造２が包囲部２２を有することで、紫外線検出素子１の位置が大きくずれないので、紫外線検出素子１の位置を微調整し易くすることができる。 The element fixing structure 2 according to the present embodiment has the surrounding portion 22 that surrounds the ultraviolet detecting element 1 in a state where the ultraviolet detecting element 1 is accommodated in this way, so that the ultraviolet detecting element 1 can be inserted into the sandwiching portion 23. Since the direction in which the ultraviolet detecting element 1 is to be inserted is determined, the ultraviolet detecting element 1 can be easily inserted into the clamping portion 23 . In addition, since the element fixing structure 2 has the surrounding portion 22, the position of the ultraviolet detecting element 1 does not deviate greatly, so that the position of the ultraviolet detecting element 1 can be easily finely adjusted.

また、素子固定構造２が包囲部２２を有することで、紫外線検出素子１が素子固定構造２に収容された状態において紫外線検出素子１が移動して、例えば素子固定構造２の本体部２１又はプリント基板３に接触することで、紫外線検出素子１に衝撃や振動が加えられるのを妨げ、紫外線検出素子１を保護することができる。また、素子固定構造２が包囲部２２を有することで、紫外線検出素子１にごみが付着しづらくなり、紫外線検出素子１による検出精度を向上させることができる。 In addition, since the element fixing structure 2 has the enclosing part 22, the ultraviolet detecting element 1 moves in a state in which the ultraviolet detecting element 1 is housed in the element fixing structure 2, and for example, the main body part 21 of the element fixing structure 2 or the printed part. By contacting the substrate 3, the ultraviolet detecting element 1 can be prevented from being subjected to impact or vibration, and the ultraviolet detecting element 1 can be protected. In addition, since the element fixing structure 2 has the enclosing part 22, it becomes difficult for dust to adhere to the ultraviolet detecting element 1, and the detection accuracy of the ultraviolet detecting element 1 can be improved.

また、本実施形態に係る素子固定構造２は、このように弾性を有しており、包囲部２２に紫外線検出素子１が収容された状態において、紫外線検出素子１の少なくとも一部に接することで紫外線検出素子１を位置の調整及び着脱ができるように挟持する挟持部２３を有する。よって、素子固定構造２は、紫外線検出素子１を素子固定構造２に着脱する際に、素子固定構造２を分解又は結合したり、接着剤を使用したりする必要がなく、紫外線検出素子１の素子固定構造２に対する位置の調整及び着脱が容易である。 In addition, the element fixing structure 2 according to the present embodiment has such elasticity, and when the ultraviolet detecting element 1 is housed in the enclosing part 22, the element fixing structure 2 is in contact with at least a part of the ultraviolet detecting element 1. It has a clamping portion 23 that clamps the ultraviolet detecting element 1 so that the position thereof can be adjusted and can be attached and detached. Therefore, the element fixing structure 2 does not require disassembling or joining the element fixing structure 2 or using an adhesive when the ultraviolet detecting element 1 is attached to or detached from the element fixing structure 2 . Position adjustment and attachment/detachment with respect to the element fixing structure 2 are easy.

また、本実施形態に係る素子固定構造２は、挟持部２３が弾性を有することで、紫外線検出素子１を素子固定構造２に取り付ける際に、挟持部２３が可動可能である。よって、素子固定構造２は、紫外線検出素子１の本体部１１の大きさがばらつきを有していても、紫外線検出素子１を安定して固定することができる。また、素子固定構造２は、挟持部２３が弾性を有することで、紫外線検出素子１を包囲部２２の内側において、抜き差しが容易となるように、挟持部２３が適度な押圧力を生じるようにすることができる。これらの結果、素子固定構造２は、紫外線検出素子１のサイズにばらつきがあっても固定位置が安定し、かつ組立工数が増加しづらくなる。 In addition, in the element fixing structure 2 according to the present embodiment, the holding part 23 has elasticity, so that the holding part 23 can move when the ultraviolet detecting element 1 is attached to the element fixing structure 2 . Therefore, the element fixing structure 2 can stably fix the ultraviolet detecting element 1 even if the size of the main body portion 11 of the ultraviolet detecting element 1 varies. In addition, the element fixing structure 2 has the holding part 23 having elasticity so that the ultraviolet detecting element 1 can be easily pulled out and inserted inside the enclosing part 22, and the holding part 23 can generate an appropriate pressing force. can do. As a result, the element fixing structure 2 stabilizes the fixing position even if the size of the ultraviolet detecting element 1 varies, and the number of assembly man-hours is less likely to increase.

また、本実施形態に係る火災感知器Ｓにおいては、紫外線検出素子１は、素子固定構造２に収容された状態において、素子固定構造２の本体部２１とプリント基板３との間に位置する。よって、火災感知器Ｓにおいては、紫外線検出素子１がカバー体８と接触しづらくなる。この結果、火災感知器Ｓは、紫外線検出素子１がカバー体８と接触しづらくなることで、紫外線検出素子１に衝撃や振動が加わるのを防ぐため、紫外線検出素子１の破損の防止ができる。 In addition, in the fire sensor S according to this embodiment, the ultraviolet detection element 1 is located between the main body portion 21 of the element fixing structure 2 and the printed circuit board 3 in a state of being housed in the element fixing structure 2 . Therefore, in the fire sensor S, the UV detection element 1 is less likely to come into contact with the cover body 8 . As a result, in the fire sensor S, the UV detection element 1 is less likely to come into contact with the cover body 8, thereby preventing impact and vibration from being applied to the UV detection element 1, so that damage to the UV detection element 1 can be prevented. .

以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されず、その要旨の範囲内で種々の変形及び変更が可能である。例えば、装置の分散・統合の具体的な実施の形態は、以上の実施の形態に限られず、その全部又は一部について、任意の単位で機能的又は物理的に分散・統合して構成することができる。また、複数の実施の形態の任意の組み合わせによって生じる新たな実施の形態も、本発明の実施の形態に含まれる。組み合わせによって生じる新たな実施の形態の効果は、もとの実施の形態の効果を合わせ持つ。 Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist thereof. be. For example, specific embodiments of device distribution/integration are not limited to the above-described embodiments. can be done. In addition, new embodiments resulting from arbitrary combinations of multiple embodiments are also included in the embodiments of the present invention. The effect of the new embodiment caused by the combination has the effect of the original embodiment.

Ｓ・・・火災感知器
１・・・紫外線検出素子
１１・・・本体部
１２・・・端子部
２・・・素子固定構造
２１・・・本体部
２１１・・・開口部
２２・・・包囲部
２２１・・・第１包囲部
２２２・・・第２包囲部
２３・・・挟持部
２３１・・・第１爪
２３２・・・第１の穴
２３３・・・第２爪
２３４・・・第２の穴
２４・・・固定部
２５・・・挿入部
３・・・プリント基板
Ｈ１・・・第１入口側開口
Ｈ２・・・第１出口側開口
Ｈ３・・・第２入口側開口
Ｈ４・・・第２出口側開口
４・・・透光体
５・・・光ガイド部
６・・・ガイドサポート
７・・・本体
８・・・カバー体
S... Fire sensor 1... Ultraviolet detection element 11... Body part 12... Terminal part 2... Element fixing structure 21... Body part 211... Opening part 22... Surrounding Part 221... First enclosing part 222... Second enclosing part 23... Holding part 231... First claw 232... First hole 233... Second claw 234... Third 2 hole 24...fixing part 25...insertion part 3...printed circuit board H1...first inlet side opening H2...first outlet side opening H3...second inlet side opening H4. ... second outlet side opening 4 ... translucent body 5 ... light guide portion 6 ... guide support 7 ... main body 8 ... cover body

Claims (4)

紫外線を検出することで火災を検出する火災感知器において、前記紫外線を検出する紫外線検出素子を固定する素子固定構造であって、
前記紫外線検出素子が収容された状態で前記紫外線検出素子を包囲する包囲部と、
弾性を有しており、前記包囲部に前記紫外線検出素子が収容された状態において、前記紫外線検出素子の少なくとも一部に接することで前記紫外線検出素子を位置の調整及び着脱ができるように挟持する挟持部と、
前記包囲部及び前記挟持部が設けられている本体部と、
を有し、
前記包囲部として、
前記挟持部に対して前記紫外線検出素子の先端側において前記紫外線検出素子を包囲する第１包囲部及び
前記挟持部に対して前記紫外線検出素子の先端側と反対の側において前記紫外線検出素子を包囲する第２包囲部を備え、
前記第２包囲部の内側面と前記本体部とにより形成されている開口の面積は、前記第１包囲部の内側面と前記本体部とにより形成されている開口の面積よりも大きいことを特徴とする素子固定構造。 In a fire sensor that detects fire by detecting ultraviolet rays, an element fixing structure for fixing an ultraviolet detection element that detects the ultraviolet rays,
an enclosing portion that surrounds the ultraviolet detection element in a state in which the ultraviolet detection element is accommodated;
It has elasticity, and in a state in which the ultraviolet detecting element is accommodated in the enclosing portion, the ultraviolet detecting element is sandwiched so as to be able to adjust the position and attach/detach the ultraviolet detecting element by contacting at least a part of the ultraviolet detecting element. a clamping portion;
a body portion provided with the enclosing portion and the holding portion;
has
As the enclosing part,
a first enclosing portion that encloses the ultraviolet detecting element on the distal end side of the ultraviolet detecting element with respect to the holding portion;
A second surrounding portion surrounding the ultraviolet detecting element on the side opposite to the tip end side of the ultraviolet detecting element with respect to the holding portion,
The area of the opening formed by the inner surface of the second enclosing part and the main body is larger than the area of the opening formed by the inner surface of the first enclosing part and the main body. element fixing structure. 紫外線を検出することで火災を検出する火災感知器において、前記紫外線を検出する紫外線検出素子を固定する素子固定構造であって、
前記紫外線検出素子が収容された状態で前記紫外線検出素子を包囲する包囲部と、
弾性を有しており、前記包囲部に前記紫外線検出素子が収容された状態において、前記紫外線検出素子の少なくとも一部に接することで前記紫外線検出素子を位置の調整及び着脱ができるように挟持する挟持部と、
を有し、
前記挟持部は、
前記包囲部の長手方向の中心線に対して第１の側に設けられ、第１の穴が形成されている第１爪と、
前記中心線に対して前記第１の側に対向する第２の側に設けられ、第２の穴が形成されている第２爪と、
を備え、
前記第１爪及び前記第２爪が前記中心線に向けて前記紫外線検出素子を押し付けることにより前記紫外線検出素子を位置の調整及び着脱ができるように挟持することを特徴とする素子固定構造。 In a fire sensor that detects fire by detecting ultraviolet rays, an element fixing structure for fixing an ultraviolet detection element that detects the ultraviolet rays,
an enclosing portion that surrounds the ultraviolet detection element in a state in which the ultraviolet detection element is accommodated;
It has elasticity, and in a state in which the ultraviolet detecting element is accommodated in the enclosing portion, the ultraviolet detecting element is sandwiched so as to be able to adjust the position and attach/detach the ultraviolet detecting element by contacting at least a part of the ultraviolet detecting element. a clamping portion;
has
The holding portion is
a first pawl provided on a first side with respect to the longitudinal centerline of the enclosing portion and having a first hole formed thereon;
a second claw provided on a second side facing the first side with respect to the center line and having a second hole formed thereon;
with
An element fixing structure, wherein the first claw and the second claw press the ultraviolet detecting element toward the center line to hold the ultraviolet detecting element so that the position thereof can be adjusted and the ultraviolet detecting element can be attached and detached. 前記挟持部の厚みは、前記包囲部の厚みよりも小さいことを特徴とする、
請求項２に記載の素子固定構造。 The thickness of the sandwiching portion is smaller than the thickness of the surrounding portion,
3. The element fixing structure according to claim 2 . 前記挟持部が前記紫外線検出素子を挟持した状態において前記紫外線検出素子を覆い、かつ光を透過させる透過体と、
前記透過体に対して発光する発光素子が挿入される挿入部と、
をさらに有することを特徴とする、
請求項１から３のいずれか一項に記載の素子固定構造。 a transmissive body that covers the ultraviolet detection element in a state where the holding portion sandwiches the ultraviolet detection element and transmits light;
an insertion portion into which a light emitting element that emits light with respect to the transmissive body is inserted;
characterized by further comprising
The element fixing structure according to any one of claims 1 to 3 .
JP2018224734A 2018-11-30 2018-11-30 Element fixing structure Active JP7252743B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018224734A JP7252743B2 (en) 2018-11-30 2018-11-30 Element fixing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018224734A JP7252743B2 (en) 2018-11-30 2018-11-30 Element fixing structure

Publications (2)

Publication Number Publication Date
JP2020087247A JP2020087247A (en) 2020-06-04
JP7252743B2 true JP7252743B2 (en) 2023-04-05

Family

ID=70910036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018224734A Active JP7252743B2 (en) 2018-11-30 2018-11-30 Element fixing structure

Country Status (1)

Country Link
JP (1) JP7252743B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006078399A (en) 2004-09-10 2006-03-23 Yamatake Corp Flame detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2797157B2 (en) * 1991-09-24 1998-09-17 能美防災株式会社 Flame detector
JPH0765272A (en) * 1993-08-30 1995-03-10 Matsushita Electric Works Ltd Ultraviolet sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006078399A (en) 2004-09-10 2006-03-23 Yamatake Corp Flame detector

Also Published As

Publication number Publication date
JP2020087247A (en) 2020-06-04

Similar Documents

Publication Publication Date Title
JP5374696B2 (en) Button unit
US20080047364A1 (en) Touch sensor using optical fiber
JP7252743B2 (en) Element fixing structure
US20160297352A1 (en) Illuminated door handle
US20070230875A1 (en) Optical communication module and manufacturing method thereof
US10921181B2 (en) Photoelectric sensor
JP6104860B2 (en) Cable holding structure for electrical equipment
JP2017093808A (en) Portable biological information measurement device
JP4762858B2 (en) Fixed right angle bending connector
US10760952B2 (en) Photoelectric sensor comprising at least one of a light projecting side light guide part and a light receiving side light guide part extends with at least a part thereof inclined with respect to a predetermined direction
JP5633705B2 (en) Raindrop detector
JP4542694B2 (en) Light receiving device and strobe device
JP6545603B2 (en) Optical connector structure
WO2017208661A1 (en) Liquid sensor and tube holding member of liquid sensor
TW201425802A (en) Linear light source apparatus
JP3909375B2 (en) Photoelectric switch detection method
JP2018170625A5 (en)
JP2009287976A (en) Light source device for sensitivity calibration
JP6323021B2 (en) Object detection sensor and game machine
TWI464386B (en) Gas concentration detection device with function of shockproof
KR100943006B1 (en) Photo contact sensing module of optical pen-type mouse having mounting device
JP2013083865A (en) Imaging apparatus having proximity detection function
JPH06174969A (en) Optical fiber terminal unit
JPH08293256A (en) Optical sensor holding device for display device
JPH1097745A (en) End detector of magnetic tape

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210908

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220816

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20220817

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20220921

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20221129

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: 20230322

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230324

R150 Certificate of patent or registration of utility model

Ref document number: 7252743

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150