JPH0831353B2 - PTC thermistor device - Google Patents
PTC thermistor deviceInfo
- Publication number
- JPH0831353B2 JPH0831353B2 JP32702889A JP32702889A JPH0831353B2 JP H0831353 B2 JPH0831353 B2 JP H0831353B2 JP 32702889 A JP32702889 A JP 32702889A JP 32702889 A JP32702889 A JP 32702889A JP H0831353 B2 JPH0831353 B2 JP H0831353B2
- Authority
- JP
- Japan
- Prior art keywords
- insulating case
- thermistor element
- insulating
- hole
- temperature coefficient
- 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 - Fee Related
Links
- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 230000002093 peripheral effect Effects 0.000 claims description 26
- 210000000078 claw Anatomy 0.000 claims description 6
- 239000011800 void material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 40
- 230000000749 insecticidal effect Effects 0.000 description 34
- 238000009834 vaporization Methods 0.000 description 30
- 230000008016 vaporization Effects 0.000 description 27
- 241000255925 Diptera Species 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002917 insecticide Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000361 pesticidal effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
- H01C1/014—Mounting; Supporting the resistor being suspended between and being supported by two supporting sections
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Resistance Heating (AREA)
- Thermistors And Varistors (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、正特性サーミスタ装置に関する。具体的に
言えば、殺虫液気化方式とマット方式の両方式の電気蚊
取り器に用いることのできる正特性サーミスタ装置に関
する。The present invention relates to a positive temperature coefficient thermistor device. Specifically, the present invention relates to a positive temperature coefficient thermistor device that can be used in both an insecticidal liquid vaporization system and a mat system electric mosquito trap.
［背景技術］ 第６図及び第７図に示すものは、殺虫液気化方式の電
気蚊取り器に用いられている従来の正特性サーミスタ装
置であり、第８図及び第９図に示すものは、マット方式
の電気蚊取り器に用いられている正特性サーミスタ装置
である。BACKGROUND ART FIG. 6 and FIG. 7 show a conventional positive temperature coefficient thermistor device used in an insecticidal liquid vaporization type electric mosquito catcher, and those shown in FIG. 8 and FIG. It is a positive temperature coefficient thermistor device used in mat type electric mosquito catchers.
まず、殺虫液気化方式に用いられる正特性サーミスタ
装置を説明する。これは、第６図に示すように、中央部
に立設した筒部51を備え、上面開口した絶縁ケース52の
前記筒部51の全周にわたって形成された環状溝部62内
に、リード部53を備えた環状電極板54を納入し、環状電
極板54の上面に両面に電極が形成されたリング状の正特
性（以下、PTCと略記する。）サーミスタ素子61を納入
し、PTCサーミスタ素子61の上にさらにリード部55付き
の環状電極板56を納め、絶縁ケース52の上面に環状の絶
縁シート57を重ねている。この後、絶縁シート57の通孔
58及び絶縁ケース52の筒部51内にアルミニウム等の金属
ハトメ59を挿通させ、第７図に示すように金属ハトメ59
を両端を絶縁シート57及び絶縁ケース52にかしめ、金属
ハトメ59により絶縁シート57と絶縁ケース52を一体に組
み立てている。このPTCサーミスタ装置60は、殺虫液を
吸上げた気化芯を金属ハトメ59内に挿通させて用いるも
のであり、両リード部53,55からPTCサーミスタ素子61に
通電させると、PTCサーミスタ素子61から発生した熱は
絶縁ケース52の筒部51を加熱し、筒部51が金属ハトメ59
を加熱し、金属ハトメ59が気化芯を加熱して殺虫液を蒸
発させるようになっている。First, a positive temperature coefficient thermistor device used in the insecticidal liquid vaporization method will be described. As shown in FIG. 6, this is provided with a tubular portion 51 standing upright in the central portion, and a lead portion 53 is provided in an annular groove portion 62 formed over the entire circumference of the tubular portion 51 of an insulating case 52 having an upper surface opening. Of the ring-shaped positive electrode (hereinafter, abbreviated as PTC) thermistor element 61 in which electrodes are formed on both surfaces on the upper surface of the ring-shaped electrode plate 54, and the PTC thermistor element 61. An annular electrode plate 56 with a lead portion 55 is further housed on the above, and an annular insulating sheet 57 is overlaid on the upper surface of the insulating case 52. After this, through holes in the insulating sheet 57
A metal eyelet 59 such as aluminum is inserted into the tube portion 51 of the insulating case 52 and 58, and the metal eyelet 59 is inserted as shown in FIG.
The both ends are crimped to the insulating sheet 57 and the insulating case 52, and the insulating sheet 57 and the insulating case 52 are integrally assembled by metal eyelets 59. This PTC thermistor device 60 is used by inserting the vaporized wick that has sucked up the insecticidal liquid into the metal eyelet 59, and when the PTC thermistor element 61 is energized from both lead parts 53, 55, the PTC thermistor element 61 The generated heat heats the tubular portion 51 of the insulating case 52, and the tubular portion 51 is covered with the metal eyelet 59.
The metal eyelet 59 heats the vaporizing core to evaporate the insecticidal liquid.
なお、殺虫液には、PTCサーミスタ素子61の寿命を短
くする成分（例えば、塩素）が含まれているので、この
PTCサーミスタ装置60にあっては、気化芯と対向してい
る筒部51の上端面と絶縁シート57との間の継ぎ目を金属
ハトメ59により覆っている。Since the insecticidal liquid contains a component (for example, chlorine) that shortens the life of the PTC thermistor element 61,
In the PTC thermistor device 60, the seam between the upper end surface of the cylindrical portion 51 facing the vaporization core and the insulating sheet 57 is covered with the metal eyelet 59.
次に、マット方式に用いられる正特性サーミスタ装置
を説明する。これは、第８図及び第９図に示すように、
電極板77,78に挟まれた両面に電極が形成された平板状
のPTCサーミスタ素子71を上面開口した絶縁ケース72内
に納め、その上にマイカ製の絶縁シート73と金属製のマ
ット放熱板74とを重ね、金属板75によってマット放熱板
74と絶縁ケース72とを一体に組み立てたものである。そ
して、このPTCサーミスタ装置76は、マット放熱板74の
上に殺虫液を含浸させたマットを置き、PTCサーミスタ
素子71から発生した熱によってマット放熱板74の上に置
かれたマットを加熱し、マットに含浸された殺虫液を蒸
発させるようにしている。Next, a positive temperature coefficient thermistor device used in the mat system will be described. This is as shown in FIG. 8 and FIG.
A plate-shaped PTC thermistor element 71 having electrodes formed on both sides sandwiched between electrode plates 77 and 78 is housed in an insulating case 72 having an upper surface opening, and an insulating sheet 73 made of mica and a mat heat radiation plate made of metal are placed on the PTC thermistor element 71. 74 and the metal plate 75, mat heat dissipation plate
74 and the insulating case 72 are integrally assembled. Then, this PTC thermistor device 76 places a mat impregnated with an insecticidal liquid on the mat heat dissipation plate 74, and heats the mat placed on the mat heat dissipation plate 74 by the heat generated from the PTC thermistor element 71, The insecticidal liquid impregnated in the mat is evaporated.
［発明が解決しようとする課題］ 上記のように従来の正特性サーミスタ装置にあって
は、殺虫液気化方式に用いられるものとマット方式に用
いられるものとが別々の構造となっており、両方式に併
用できる構造のものはなかった。つまり、第６図及び第
７図に示したような殺虫液気化方式に用いられるPTCサ
ーミスタ装置では、中央に金属ハトメの端部が位置して
いるので、上面にマットを置いて加熱すると、マットか
ら蒸発した殺虫液の蒸気や結露などが金属ハトメの端か
ら金属ハトメと筒部との間に入り、さらには筒部の上端
と絶縁シートの継ぎ目から内部に浸入するおそれがあ
り、マット方式には用いることができなかった。また、
第８図及び第９図に示したようなマット方式に用いられ
るPTCサーミスタ装置にあっては、気化芯を挿通させて
加熱できるような通孔を備えていなかったからである。[Problems to be Solved by the Invention] As described above, in the conventional positive temperature coefficient thermistor device, the one used for the insecticidal liquid vaporization system and the one used for the matte system have different structures. There was no structure that could be used in combination with the system. In other words, in the PTC thermistor device used in the insecticidal liquid vaporization system as shown in FIGS. 6 and 7, the end of the metal eyelet is located in the center, so when the mat is placed on the top surface and heated, the mat There is a risk that vapor and dew condensation of the insecticidal liquid that has evaporated from the inside of the metal eyelet will enter between the metal eyelet and the tube part, and further may penetrate into the interior from the joint of the upper end of the tube part and the insulating sheet. Could not be used. Also,
This is because the PTC thermistor device used in the mat system as shown in FIGS. 8 and 9 does not have a through hole through which the vaporization core can be inserted and heated.
また、第６図及び第７図のような殺虫液気化方式に用
いられるPTCサーミスタ装置では、絶縁ケースの筒部内
に金属ハトメを設けているので、PTCサーミスタ素子→
絶縁ケースの筒部→金属ハトメ→気化芯というように熱
伝導経路が長く、熱損失が大きかった。さらに、筒部の
直径や金属ハトメの直径には、ばらつき、あるいは熱に
よる金属ハトメと絶縁ケースとの熱膨張の差によって、
絶縁ケースと金属ハトメとの嵌合性が悪くなり、筒部と
金属ハトメとの間に隙間ができる。また、リング状のPT
Cサーミスタ素子の内径寸法のばらつきによってもリン
グ状のPTCサーミスタ素子と絶縁ケースの間にも隙間が
発生する。この隙間は、断熱層（空気層）として働くか
ら、一層熱効率が悪化し、しかも隙間の大きさのばらつ
きのため、金属ハトメの表面温度が大きくばらつくとい
う欠点があった。一方、金属ハトメの表面温度のばらつ
きを小さくするためには、寸法精度の高い絶縁ケースや
金属ハトメを用いる必要があり、コストが高くつくとい
う問題があった。Further, in the PTC thermistor device used in the insecticidal liquid vaporization method as shown in FIGS. 6 and 7, since the metal eyelets are provided in the cylindrical portion of the insulating case, the PTC thermistor element →
The heat conduction path was long, such as the cylindrical part of the insulating case → metal eyelet → vaporization core, and the heat loss was large. Furthermore, due to variations in the diameter of the tubular portion and the diameter of the metal eyelet, or due to the difference in thermal expansion between the metal eyelet and the insulating case due to heat,
The fitting property between the insulating case and the metal eyelet deteriorates, and a gap is formed between the tubular portion and the metal eyelet. In addition, ring-shaped PT
A gap also occurs between the ring-shaped PTC thermistor element and the insulating case due to variations in the inner diameter of the C thermistor element. Since the gap acts as a heat insulating layer (air layer), the thermal efficiency is further deteriorated, and further, the surface temperature of the metal eyelets varies greatly due to the variation in the size of the gap. On the other hand, in order to reduce the variation in the surface temperature of the metal eyelets, it is necessary to use an insulating case or metal eyelets with high dimensional accuracy, which causes a problem of high cost.
なお、PTCサーミスタ素子等を絶縁ケース内に樹脂封
止したものもあるが、PTCサーミスタ素子は200℃以上に
発熱するので、このような高温化で長時間安定な樹脂材
料を用いようとすれば、高価につき、また樹脂によって
PTCサーミスタ素子が劣化させられ、信頼性のよい正特
性サーミスタ装置を製造しにくいという問題がある。Note that there are some PTC thermistor elements that are resin-sealed in an insulating case.However, PTC thermistor elements generate heat above 200 ° C, so if you try to use a resin material that is stable for a long time at such high temperatures, Expensive, depending on the resin
There is a problem that the PTC thermistor element is deteriorated and it is difficult to manufacture a reliable positive temperature coefficient thermistor device.
しかして、本発明は叙上の従来例の欠点に鑑みてなさ
れたものであり、その目的とするところは殺虫液気化方
式とマット方式の両方式の電気蚊取り器に併用すること
ができ、しかも熱効率の良好な正特性サーミスタ装置を
提供することにある。Therefore, the present invention has been made in view of the drawbacks of the above conventional examples, and the purpose thereof is to be able to use together with both the insecticidal liquid vaporization system and the mat system electric mosquito trap, and An object is to provide a positive temperature coefficient thermistor device having good thermal efficiency.
［課題を解決するための手段］ このため本発明の正特性サーミスタ装置は、下面側を
開口部とし、この開口部に段差をおいて凹部が形成さ
れ、この凹部内に上面から下面に貫通した貫通孔を有す
る筒部が形成されているとともに、正特性サーミスタ素
子およびこの正特性サーミスタ素子に接続する端子の電
極部が納入される下面側に開口した孔部と端子のリード
部が納入される下面側に開口した空所が連通して凹設さ
れた絶縁ケースと、 この絶縁ケースの孔部に納入された正特性サーミスタ
素子と、 この正特性サーミスタ素子を孔部において電極部で挟
持し、リード部が前記空所に納入された端子と、 前記絶縁ケースの凹部にはめ込まれ、下面側の前記開
口部を密閉する絶縁シートと、 前記絶縁ケースの上面に取り付けられ、爪片によって
絶縁ケースと絶縁シートを一体に保持している金属板と
からなり、 前記絶縁ケースの筒部内周面及び前記金属板の絶縁ケ
ース上面に位置する部分を発熱部としたことを特徴とし
ている。[Means for Solving the Problem] Therefore, in the positive temperature coefficient thermistor device of the present invention, the lower surface side is made an opening, and a recess is formed with a step at this opening, and the recess penetrates from the upper surface to the lower surface. A cylindrical portion having a through hole is formed, and a positive characteristic thermistor element and an electrode portion of a terminal connected to the positive characteristic thermistor element are delivered. A hole opened on the lower surface side and a terminal lead portion are delivered. An insulating case in which a void opened on the lower surface side communicates with each other is provided, a positive temperature coefficient thermistor element delivered to the hole of this insulating case, and this positive temperature coefficient thermistor element is sandwiched between electrodes in the hole, The lead part is delivered to the space, the insulating sheet is fitted into the recess of the insulating case and seals the opening on the lower surface side, and the insulating sheet is attached to the upper surface of the insulating case and is attached by the claw piece. It consists of a metal plate which holds the insulating sheet and the insulating casing together, is characterized in the that the portion located on the insulating case upper surface of the cylindrical inner peripheral surface of the insulating case and the metal plate was heat-generating portion.
［作用］ 本発明にあっては、絶縁ケースの筒部内周面を発熱部
としたので、筒部の貫通孔内に気化芯を挿通させて加熱
することにより殺虫液気化方式に用いられる正特性サー
ミスタ装置として用いることができる。また、絶縁ケー
スの上面に取り付けられた金属板の絶縁ケース上面に位
置する部分を発熱部としているので、この金属板の上に
マットを載せて加熱することによりマット方式に用いら
れる正特性サーミスタ装置として用いることができる。
しかも、絶縁ケースの上面を直接発熱部とすることな
く、マットを加熱するための発熱部として金属板を用い
ているので、マットから蒸発する殺虫液の気体が絶縁ケ
ースに浸透せず、絶縁ケースが汚れたり、変質したりす
ることがない。さらに、金属板の発熱部は汚れにくく、
マットからの蒸気等によって汚れても容易に拭き取るこ
とができる。[Operation] In the present invention, since the inner peripheral surface of the tubular portion of the insulating case is used as the heat generating portion, the vaporization wick is inserted into the through hole of the tubular portion to heat the vaporization wick, and thus the positive characteristic used in the insecticidal liquid vaporization method is obtained. It can be used as a thermistor device. In addition, since the portion of the metal plate attached to the upper surface of the insulating case located on the upper surface of the insulating case is used as a heat generating portion, a positive temperature coefficient thermistor device used in the mat system by placing a mat on the metal plate and heating it. Can be used as
Moreover, since the metal plate is used as a heat generating portion for heating the mat without directly forming the heat generating portion on the upper surface of the insulating case, the gas of the insecticidal liquid evaporating from the mat does not penetrate into the insulating case. Does not get dirty or deteriorate. Furthermore, the heat generating part of the metal plate is hard to get dirty,
Even if it gets dirty with steam from the mat, it can be easily wiped off.
しかも、絶縁ケースの下面側を開口部とし、この開口
部に段差をおいて凹部が形成され、この凹部内に絶縁シ
ートをはめ込むようにしたので、筒部の貫通孔に気化芯
を挿通させた時、筒部と絶縁シートとの間の継ぎ目が気
化芯に対向せず、従来例のように貫通孔の内周面を金属
ハトメで覆って殺虫液の浸入を防止する必要がなくな
り、コストを下げることができる。Moreover, the lower surface side of the insulating case is used as an opening, and a concave portion is formed with a step at this opening, and the insulating sheet is fitted into the concave portion, so that the vaporization core is inserted into the through hole of the cylindrical portion. At this time, the seam between the tubular portion and the insulating sheet does not face the vaporization core, and it is not necessary to cover the inner peripheral surface of the through hole with a metal eyelet to prevent invasion of insecticidal liquid as in the conventional example, which reduces the cost. Can be lowered.
また、金属ハトメを省き、絶縁ケースの筒部内周面を
直接発熱部にしたので、殺虫液気化方式に用いられる正
特性サーミスタ装置として用いた場合、熱伝導経路が短
くなり、熱損失が小さくなる。さらに、従来例の金属ハ
トメと絶縁ケースの間、あるいはPTCサーミスタ素子と
絶縁ケースの間に発生する空気層のような不安定な断熱
層が生じないので、熱効率が向上すると共に加熱温度の
ばらつき等も生じない。Also, since the metal eyelets are omitted and the inner peripheral surface of the cylindrical part of the insulating case is directly used as the heat generating part, when used as a positive temperature coefficient thermistor device used in the insecticidal liquid vaporization method, the heat conduction path is shortened and heat loss is reduced. . Furthermore, since an unstable heat insulating layer such as an air layer generated between the metal eyelet and the insulating case of the conventional example or between the PTC thermistor element and the insulating case does not occur, the thermal efficiency is improved and the heating temperature varies. Does not occur.
さらに、筒部と絶縁シートとの間の継ぎ目が貫通孔の
内周面に位置しないようにしたので、絶縁ケース上面の
金属板の上にマットを置いて加熱してもマットに含浸さ
せられていた殺虫液が絶縁ケースの内部に浸入すること
がなく、絶縁ケース上面の金属板を発熱部とすることが
できるようになり、マット方式に用いられる正特性サー
ミスタ装置としても用いることができるようになる。Further, since the joint between the tubular portion and the insulating sheet is not located on the inner peripheral surface of the through hole, the mat is impregnated even if the mat is placed on the metal plate on the upper surface of the insulating case and heated. Since the insecticidal liquid does not enter the inside of the insulating case, the metal plate on the upper surface of the insulating case can be used as the heat generating part, and it can be used as a positive temperature coefficient thermistor device used in the mat method. Become.
［実施例］ 以下、本発明の実施例を添付図に基づいて詳述する。[Example] Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.
第１図には、本発明の一実施例の下面側からの分解斜
視図を示してある。絶縁ケース１は、アルミナ（Al
2O3）等の無機物によって成形され、下面側を開口部と
し、外周壁部の下面から段差をおいて後述する絶縁シー
ト８をはめ込むための凹部９が形成されており、凹部９
の深さは絶縁シート８の厚みよりも少し浅くなってい
る。また、絶縁ケース１の凹部９内には、上面から下面
に貫通した貫通孔３を有する筒部２が形成されており、
筒部２の先端は絶縁ケース１の外周壁部10の下面とほぼ
同じ面まで突出している。さらに、凹部９内には、PTC
サーミスタ素子４と、このPTCサーミスタ素子４に接続
するバネ端子12および平端子13の各電極部20,17とが納
入される下面側に開口した孔部11が凹設され、バネ端子
12のリード部21および平端子13のリード部18が納入され
る下面側に開口した空所14,15が凹設されている。PTCサ
ーミスタ素子４は、円板状をしており、両主面に電極16
a,16bが形成されている。PTCサーミスタ素子４は、円板
形に限らず、角板形やリング状等でもよいが、リング状
のPTCサーミスタ素子４は内周寸法のばらつきが大き
く、絶縁ケース１との間に隙間が発生し易いので、円板
状、角板状などの平板状のPTCサーミスタ素子が好まし
い。前記孔部11は、平端子13を納めるための空所15と連
通しており、そのため孔部11の内周面の一部が開口して
いるが、孔部11の内周面にPTCサーミスタ素子４の外周
面の少なくとも1/2以上が当接する必要がある。孔部11
の内周面は、PTCサーミスタ素子４を納入した時、PTCサ
ーミスタ素子４の外周面に密着するようになっており、
孔部11の内周面に上記のようにPTCサーミスタ素子４の
外周面の少なくとも1/2以上当接していればPTCサーミス
タ素子４を位置決めできる。また、孔部11の内周面が、
PTCサーミスタ素子４の内周面に密着しているので、PTC
サーミスタ素子４からの熱は絶縁ケース１へ直熱伝導
し、効率的に熱を伝導させることができる。この熱効率
を高めると共に発熱部5,6の表面温度のばらつきを軽減
するためには、孔部11の内周面にPTCサーミスタ素子４
の外周面が当接している部分を大きくすることが好まし
く、図示例では孔部11の内周面にPTCサーミスタ素子４
の外周面の約3/4が当接している。平端子13は、ステン
レス等の金属材料によって形成されており、PTCサーミ
スタ素子４の一方電極16bと接触させるための電極部17
とリード部18との間に細いヒューズ部19が形成されてい
る。このヒューズ部19は、線幅を細くすることによって
ヒューズ機能を持たせたものであり、過大電流が流れる
と溶断する。また、バネ端子12は、バネ性を有する電極
部20と、リード部21とからなっている。しかして、ま
ず、絶縁ケース１の孔部11及び空所15内に平端子13を納
入し、電極部17に当接するように孔部11内にPTCサーミ
スタ素子４をはめ込み、電極部20がPTCサーミスタ素子
４に当接するようにしてバネ端子12を孔部11及び空所14
内に納入する。そして、このバネ端子12に当接するよう
にして絶縁ケース１の凹部９内に絶縁シート８をはめ込
み、絶縁ケース１の下面側の開口部を密閉する。こうし
て、絶縁ケース１と絶縁シート８を簡易密閉構造とする
ことにより、PTCサーミスタ素子４が外気の影響を受け
にくくなり、かつ外部からの異物の侵入も防止できる。
なお、ケース１の凹部９に接着剤を塗布しておき、絶縁
シート８を絶縁ケース１に接着してもよい。熱不良導体
によって形成された絶縁シート８の中央部には、通孔７
が穿孔されており、絶縁シート８が絶縁ケース１の下面
に取り付けられた時、筒部２の先端が通孔７内に挿入さ
れる。また、絶縁シート８の縁に設けられた切り欠き部
22には、リード部18,21が挿通され、リード部18,21が絶
縁ケース１の外に引き出される。この後、PTCサーミス
タ素子４、平端子13及びバネ端子12を内蔵した絶縁ケー
ス１及び絶縁シート８は、ステンレス板等を所定形状に
打ち抜いて折り曲げた金属板23によってかしめられ、第
２図及び第３図に示すような正特性サーミスタ装置Ａが
組み立てられる。金属板23は、絶縁ケース１の上面とほ
ぼ等しい寸法の発熱部５を有しており、この発熱部５
は、絶縁ケース１の上面に密着するようにして絶縁ケー
ス１の上面を覆っており、発熱部５から延出された４箇
所の爪片24を折り曲げて絶縁ケース１の側面から絶縁シ
ート８の下面へかしめることにより、絶縁ケース１と絶
縁シート８を一体に結合させている。また、発熱部５の
略中央には、絶縁ケース１の貫通孔３と対向して通孔23
aが開口され、発熱部５の両端からは、先端部が直角に
折り曲げられたアーム23bが延出されており、アーム23b
の先端部には爪23cが切り起こされている。絶縁ケース
１内に納入されたPTCサーミスタ素子４は、バネ端子12
によって押圧され、平端子13及び絶縁ケース１に密着さ
せられ、このため発熱部5,6の表面温度のばらつきが低
減される。そして、筒部２の内周面（貫通孔３）が一方
の発熱部６となっており、PTCサーミスタ素子４によっ
て直接加熱されているので、表面温度のばらつきが小さ
く、熱効率が良好となる。また、絶縁ケース１の上面に
配置された金属板23が、他方の発熱部５となっているの
で、この発熱部５の上に殺虫液を含浸させたマットを載
せて加熱した場合、マットから蒸発した殺虫液の気体は
金属板に遮られて絶縁ケース１の上面に浸透することが
なく、絶縁ケース１を変質させたり、汚したりすること
がない。一方、金属板23に付着した殺虫液は容易に拭き
取ることができる。上記のような構造によれば、公規格
に規定されている沿面距離や絶縁距離等の制約条件を受
けることがないので、装置の小型化が可能となる。ま
た、PTCサーミスタ素子４に過電流が流れたり、PTCサー
ミスタ素子４が熱暴走した場合には、平端子13のヒュー
ズ部19が溶断するが、万一、溶断することなく、異常温
度上昇した場合も、絶縁ケース１は無機物であるので、
発火の恐れがなく、安全である。なお、絶縁ケース１の
形状は、四角形に限らず、任意の形状とすることができ
る。FIG. 1 shows an exploded perspective view from the lower surface side of an embodiment of the present invention. The insulating case 1 is made of alumina (Al
2 O 3 ) and the like, the lower surface side is made an opening, and a concave portion 9 for fitting an insulating sheet 8 described later is formed with a step from the lower surface of the outer peripheral wall portion.
Is slightly shallower than the thickness of the insulating sheet 8. Further, in the concave portion 9 of the insulating case 1, a cylindrical portion 2 having a through hole 3 penetrating from the upper surface to the lower surface is formed,
The tip of the tubular portion 2 projects to almost the same surface as the lower surface of the outer peripheral wall portion 10 of the insulating case 1. Furthermore, in the recess 9, PTC
The hole terminal 11 opened on the lower surface side where the thermistor element 4 and the electrode terminals 20 and 17 of the spring terminal 12 and the flat terminal 13 connected to the PTC thermistor element 4 are delivered is recessed to form the spring terminal.
The open spaces 14 and 15 on the lower surface side where the 12 lead parts 21 and the lead part 18 of the flat terminal 13 are delivered are recessed. The PTC thermistor element 4 has a disk shape and has electrodes 16 on both main surfaces.
a and 16b are formed. The PTC thermistor element 4 is not limited to a disc shape and may be a rectangular plate shape or a ring shape, but the ring-shaped PTC thermistor element 4 has a large variation in the inner peripheral dimension, and a gap is generated between the PTC thermistor element 4 and the insulating case 1. A flat plate-shaped PTC thermistor element such as a disc or a square plate is preferable because it is easy to perform. The hole 11 communicates with a space 15 for accommodating the flat terminal 13, so that a part of the inner peripheral surface of the hole 11 is open, but the inner peripheral surface of the hole 11 has a PTC thermistor. At least 1/2 or more of the outer peripheral surface of the element 4 needs to contact. Hole 11
When the PTC thermistor element 4 is delivered, the inner peripheral surface of is in close contact with the outer peripheral surface of the PTC thermistor element 4.
The PTC thermistor element 4 can be positioned if it contacts at least 1/2 the outer peripheral surface of the PTC thermistor element 4 as described above on the inner peripheral surface of the hole 11. Also, the inner peripheral surface of the hole portion 11,
Since it is in close contact with the inner peripheral surface of the PTC thermistor element 4, the PTC
The heat from the thermistor element 4 is directly conducted to the insulating case 1, and the heat can be conducted efficiently. In order to improve the thermal efficiency and reduce the variation in the surface temperature of the heat generating parts 5 and 6, the PTC thermistor element 4 is formed on the inner peripheral surface of the hole 11.
It is preferable to increase the size of the portion where the outer peripheral surface of the PTC thermistor element 4 abuts.
Approximately 3/4 of the outer peripheral surface is in contact. The flat terminal 13 is made of a metal material such as stainless steel, and has an electrode portion 17 for contacting the one electrode 16b of the PTC thermistor element 4.
A thin fuse portion 19 is formed between the lead portion 18 and the lead portion 18. The fuse portion 19 has a fuse function by reducing the line width, and is blown when an excessive current flows. Further, the spring terminal 12 includes an electrode portion 20 having a spring property and a lead portion 21. Then, first, the flat terminal 13 is delivered into the hole 11 and the void 15 of the insulating case 1, the PTC thermistor element 4 is fitted into the hole 11 so as to abut the electrode 17, and the electrode 20 is replaced by the PTC. The spring terminal 12 is provided so as to abut against the thermistor element 4 and the hole 11 and the space 14 are formed.
To be delivered within. Then, the insulating sheet 8 is fitted into the recess 9 of the insulating case 1 so as to be in contact with the spring terminal 12, and the opening on the lower surface side of the insulating case 1 is sealed. Thus, the PTC thermistor element 4 is less likely to be affected by the outside air and the foreign matter can be prevented from entering from the outside by using the insulating case 1 and the insulating sheet 8 as a simple sealed structure.
Alternatively, the insulating sheet 8 may be bonded to the insulating case 1 by applying an adhesive agent to the recess 9 of the case 1. A through hole 7 is formed in the central portion of the insulating sheet 8 formed of a heat-defective conductor.
When the insulating sheet 8 is attached to the lower surface of the insulating case 1, the tip of the tubular portion 2 is inserted into the through hole 7. In addition, a cutout portion provided on the edge of the insulating sheet 8
The lead portions 18 and 21 are inserted into the 22 and the lead portions 18 and 21 are drawn out of the insulating case 1. Thereafter, the insulating case 1 and the insulating sheet 8 having the PTC thermistor element 4, the flat terminal 13 and the spring terminal 12 built therein are caulked by a metal plate 23 obtained by punching and bending a stainless steel plate or the like into a predetermined shape. A positive temperature coefficient thermistor device A as shown in FIG. 3 is assembled. The metal plate 23 has a heat generating portion 5 having substantially the same size as the upper surface of the insulating case 1.
Covers the upper surface of the insulating case 1 so as to be in close contact with the upper surface of the insulating case 1, and the four claw pieces 24 extending from the heat generating portion 5 are bent to move the insulating sheet 8 from the side surface of the insulating case 1. By caulking the lower surface, the insulating case 1 and the insulating sheet 8 are integrally combined. In addition, at a substantially central portion of the heat generating portion 5, a through hole 23 is formed so as to face the through hole 3 of the insulating case 1.
An arm 23b whose end is bent at a right angle is extended from both ends of the heating portion 5 by opening a.
A claw 23c is cut and raised at the tip of the. The PTC thermistor element 4 delivered in the insulating case 1 has a spring terminal 12
It is pressed by and is brought into close contact with the flat terminal 13 and the insulating case 1, so that the variation in the surface temperature of the heat generating portions 5 and 6 is reduced. Since the inner peripheral surface (through hole 3) of the cylindrical portion 2 is one of the heat generating portions 6 and is directly heated by the PTC thermistor element 4, variations in surface temperature are small and thermal efficiency is good. In addition, since the metal plate 23 arranged on the upper surface of the insulating case 1 serves as the other heat generating part 5, when a mat impregnated with the insecticidal liquid is placed on the heat generating part 5 and heated, The vaporized insecticide liquid gas is not blocked by the metal plate and does not permeate the upper surface of the insulating case 1, so that the insulating case 1 is not deteriorated or soiled. On the other hand, the insecticidal liquid attached to the metal plate 23 can be easily wiped off. According to the structure as described above, since the constraint conditions such as the creepage distance and the insulation distance which are stipulated in the public standards are not imposed, the device can be downsized. Also, if an overcurrent flows through the PTC thermistor element 4 or the PTC thermistor element 4 undergoes a thermal runaway, the fuse portion 19 of the flat terminal 13 will melt, but in the unlikely event that it does not melt and the abnormal temperature rises. However, since the insulating case 1 is an inorganic material,
There is no risk of fire and it is safe. The shape of the insulating case 1 is not limited to a quadrangle, but may be any shape.
上記正特性サーミスタ装置Ａは、殺虫液気化方式の電
気蚊取り器用としても、マット方式の電気蚊取り器用と
しても用いることができるものであり、両方式に併用す
ることができる。例えば、第４図及び第５図に示すもの
は、殺虫液気化方式とマット方式との両方式に用いるこ
とができる電気蚊取り器Ｂの断面図である。これは、ケ
ース25内にビン収納室26を形成したものである。The positive temperature coefficient thermistor device A can be used both for an insecticidal liquid vaporization type electric mosquito catcher and for a mat type electric mosquito catcher, and can be used in combination with both. For example, FIG. 4 and FIG. 5 are sectional views of an electric mosquito trap B that can be used in both the insecticidal liquid vaporization system and the mat system. This is a case 25 in which a bottle storage chamber 26 is formed.
しかして、正特性サーミスタ装置Ａを殺虫液気化方式
として用いる場合には、第４図に示すように、殺虫液を
入れた薬液ビン28をビン収納室26内に置く。この薬液ビ
ン28は、毛細管現象により液体を吸上げることのできる
例えばフェルト状や繊維状の気化芯29を蓋30の部分に挿
通させ、下部を殺虫液の中に浸け、上端部を上方へ突出
させたものである。この後、筒部２内に気化芯29の上部
を挿通させるようにしてケース25内に正特性サーミスタ
装置Ａを納入し、ケース25に額縁状の蓋27を被せて用い
る。このとき、正特性サーミスタ装置Ａは、アーム23b
の先端部をビン収納室26の内壁面に弾性的に圧接させて
保持されており、爪23cがビン収納室26の内壁面に引っ
掛かることにより不用意に正特性サーミスタ装置Ａがケ
ース25から抜けないようになっている。こうして、PTC
サーミスタ素子４に通電して発熱させると、熱はPTCサ
ーミスタ素子４→筒部２→気化芯29というように熱伝導
し、熱伝導経路が短いので、熱損失が小さく、しかもPT
Cサーミスタ素子４と絶縁ケース１とが接触しているの
で、発熱部６である筒部２の表面温度が一定となり、熱
効率よく気化芯29を加熱することができるのである。加
熱された気化芯29からは、吸上げた殺虫液が蒸発させら
れ、周囲へ放散される。このとき気化芯29から蒸発した
殺虫液は、再び筒部２の内周面で結露し、筒部２に沿っ
て下方へ流れることがあるが、筒部２と絶縁シート８の
継ぎ目が筒部２の内周面にないので、そこから殺虫液が
絶縁ケース１内に流れ込むことがない。また、殺虫液に
限らず、醤油や水等を上から滴下させた時も、絶縁ケー
ス１内に浸入するのを防止することができる。さらに、
筒部２が直接に発熱部６となっているので、筒部２の寸
法公差が厳密でなくても基本性能に影響を与えず、した
がって絶縁ケース１のコストを下げることができる。When the positive temperature coefficient thermistor device A is used as the insecticidal liquid vaporization system, the chemical liquid bottle 28 containing the insecticidal liquid is placed in the bottle storage chamber 26 as shown in FIG. In this chemical liquid bottle 28, for example, a felt-like or fibrous vaporization core 29 capable of sucking up the liquid by a capillary phenomenon is inserted into the lid 30, the lower portion is immersed in the insecticidal liquid, and the upper end portion is projected upward. It was made. After that, the PTC thermistor device A is delivered into the case 25 so that the upper part of the vaporization core 29 is inserted into the tubular portion 2, and the case 25 is covered with a frame-shaped lid 27 to be used. At this time, the PTC thermistor device A has the arm 23b.
The tip end of the positive temperature coefficient thermistor device A is elastically pressed against the inner wall surface of the bin storage chamber 26 and held, and the positive characteristic thermistor device A is accidentally pulled out from the case 25 by the claw 23c being caught by the inner wall surface of the bin storage chamber 26. There is no such thing. Thus, PTC
When the thermistor element 4 is energized to generate heat, the heat is conducted in the order of PTC thermistor element 4 → cylindrical part 2 → vaporization core 29, and the heat conduction path is short, so heat loss is small, and PT
Since the C thermistor element 4 and the insulating case 1 are in contact with each other, the surface temperature of the tubular portion 2 which is the heat generating portion 6 becomes constant, and the vaporization core 29 can be heated efficiently. From the heated vaporization core 29, the sucked insecticidal liquid is evaporated and diffused to the surroundings. At this time, the insecticidal liquid evaporated from the vaporization core 29 may be condensed again on the inner peripheral surface of the tubular portion 2 and may flow downward along the tubular portion 2, but the joint between the tubular portion 2 and the insulating sheet 8 may be the tubular portion. Since it is not on the inner peripheral surface of 2, the insecticidal liquid does not flow into the insulating case 1 from there. Further, not only the insecticidal liquid, but also soy sauce, water, or the like can be prevented from entering the insulating case 1 when dropped from above. further,
Since the tubular portion 2 directly serves as the heat generating portion 6, basic performance is not affected even if the dimensional tolerance of the tubular portion 2 is not strict, and therefore the cost of the insulating case 1 can be reduced.
なお、上述した実施例は、本発明の一実施例であっ
て、これに限定されるものではなく、筒部２の下端部の
全体、もしくは一部を絶縁シート８の下面よりも下方へ
突出させることにおいて、絶縁ケース内に殺虫液等が浸
入することをさらに防止することができる。The above-described embodiment is an embodiment of the present invention, and the present invention is not limited to this, and the whole or a part of the lower end portion of the tubular portion 2 is projected below the lower surface of the insulating sheet 8. In doing so, it is possible to further prevent the insecticidal liquid or the like from entering the insulating case.
また、実施例において、絶縁シートをはめ込むための
絶縁ケースの凹部の深さが絶縁シートの厚みよりも少し
浅くなったものを示したが、凹部の深さは絶縁シートの
厚みと等しくても、深くてもよく、筒部と絶縁シートと
の間の継ぎ目を貫通孔の内周面に位置しないようにすれ
ばよい。In the examples, the depth of the recess of the insulating case for fitting the insulating sheet is shown to be slightly shallower than the thickness of the insulating sheet, but the depth of the recess is equal to the thickness of the insulating sheet, It may be deep, and the seam between the tubular portion and the insulating sheet may not be located on the inner peripheral surface of the through hole.
次に、正特性サーミスタ装置Ａをマット方式として用
いる場合には、第５図に示すように、ケース25内に正特
性サーミスタ装置Ａを納入し、発熱部５である金属板23
の上面に殺虫液を含浸させたマット31（蚊取りマット）
を置き、正特性サーミスタ装置Ａでマット31に含浸させ
られている殺虫液を蒸発させる。この場合も、PTCサー
ミスタ素子４→絶縁ケース１の上面→金属板23→マット
31というように熱伝導の良好な経路を通じて熱伝導さ
れ、しかもPTCサーミスタ素子４と絶縁ケース１との間
は接触伝導しているので、熱損失が少なく、発熱部５の
表面温度のばらつきも小さくなる。Next, when the positive temperature coefficient thermistor device A is used as a mat type, as shown in FIG. 5, the positive temperature coefficient thermistor device A is delivered in a case 25, and the metal plate 23 which is the heat generating part 5 is delivered.
31 (mosquito repellent mat) with the upper surface of the surface impregnated with insecticide
Then, the insecticidal liquid impregnated in the mat 31 is evaporated by the positive temperature coefficient thermistor device A. Also in this case, the PTC thermistor element 4 → the upper surface of the insulating case 1 → the metal plate 23 → the mat
As shown in FIG. 31, the heat is conducted through a path having good heat conduction, and the PTC thermistor element 4 and the insulating case 1 are in contact conduction, so that the heat loss is small and the variation in the surface temperature of the heat generating portion 5 is small. Become.
［発明の効果］ 本発明によれば、絶縁ケース上面の金属板の上にマッ
トを置いてマット方式の電気蚊取り器に用いることがで
き、また筒部の貫通孔内に気化芯を挿通させて殺虫液気
化方式の電気蚊取り器に用いることもでき、両方式併用
の正特性サーミスタ装置を構成することができる。[Effects of the Invention] According to the present invention, a mat can be placed on a metal plate on the upper surface of an insulating case to be used for a mat type electric mosquito catcher, and a vaporization core can be inserted into the through hole of the tubular portion. It can also be used in an insecticidal liquid vaporization type electric mosquito catcher, and a positive temperature coefficient thermistor device using both types can be constructed.
しかも、絶縁ケースと絶縁シートとの間の継ぎ目が気
化芯に対向しないので、従来例のように貫通孔の内周面
を金属ハトメで覆って殺虫液の浸入を防止する必要がな
くなり、コストを下げることができる。Moreover, since the seam between the insulating case and the insulating sheet does not face the vaporization core, it is not necessary to cover the inner peripheral surface of the through hole with a metal eyelet to prevent invasion of insecticidal liquid as in the conventional example, which reduces the cost. Can be lowered.
また、金属ハトメを無くしたことにより、殺虫液気化
方式の正特性サーミスタ装置として用いた場合、熱損失
が小さくなって熱効率が向上すると共に加熱温度のばら
つき等も軽減できる。In addition, by eliminating the metal eyelets, when used as a pesticidal liquid vaporization type positive temperature coefficient thermistor device, heat loss is reduced, thermal efficiency is improved, and variations in heating temperature can be reduced.
さらに、絶縁ケース上面の金属板からなる発熱部の上
にマットを置いて加熱してもマットに含浸されている殺
虫液の蒸気や結露が絶縁ケースの内部に浸入することが
ないので、絶縁ケースの上面側を発熱部としても内部の
正特性サーミスタ素子等が殺虫液によって侵されること
がない。しかも、絶縁ケースの上面を直接発熱部とする
ことなく、その上に配置した金属板を発熱部としている
ので、マットから蒸発した気体によって絶縁ケースが汚
れたり、変質したりすることがない。また、金属板から
なる発熱部は容易に汚れを除去できる。Furthermore, even if the mat is placed on the heat generating part made of a metal plate on the upper surface of the insulating case and heated, the insecticide liquid impregnated in the mat does not enter the inside of the insulating case. Even if the upper surface side of is used as a heat generating portion, the internal positive temperature coefficient thermistor element and the like will not be attacked by the insecticide. Moreover, the upper surface of the insulating case is not directly used as the heat generating portion, but the metal plate disposed thereon is used as the heat generating portion, so that the insulating case is not contaminated or deteriorated by the gas evaporated from the mat. Further, the heat generating portion made of a metal plate can easily remove dirt.
第１図は本発明の正特性サーミスタ装置の一実施例を示
す分解斜視図、第２図は第１図の正特性サーミスタ装置
の組み立て状態の外観斜視図、第３図は第２図のＸ−Ｘ
線に沿う側断面図、第４図は本発明の正特性サーミスタ
装置を用いた殺虫液気化方式の電気蚊取り器の概略断面
図、第５図は本発明の正特性サーミスタ装置を用いたマ
ット方式の電気蚊取り器の概略断面図、第６図は従来例
の正特性サーミスタ装置を示す分解斜視図、第７図は第
６図の断面図、第８図は別な従来例の外観斜視図、第９
図は第８図の側断面図である。 １……絶縁ケース ２……筒部 ３……貫通孔 ４……正特性サーミスタ素子 5,6……発熱部 ７……通孔 ８……絶縁シート ９……凹部 11……孔部 12……バネ端子 13……平端子 14,15……空所 17……平端子の電極部 18……平端子のリード部 20……バネ端子の電極部 21……バネ端子のリード部 23……金属板 24……爪片FIG. 1 is an exploded perspective view showing an embodiment of the positive temperature coefficient thermistor device of the present invention, FIG. 2 is an external perspective view of the positive temperature coefficient thermistor device of FIG. 1 in an assembled state, and FIG. 3 is an X of FIG. -X
4 is a side sectional view taken along the line, FIG. 4 is a schematic sectional view of an insecticidal liquid vaporization type electric mosquito trap using the positive temperature coefficient thermistor device of the present invention, and FIG. 5 is a mat type using the positive temperature coefficient thermistor device of the present invention. 6 is a schematic sectional view of the electric mosquito trap of FIG. 6, FIG. 6 is an exploded perspective view showing a conventional positive temperature coefficient thermistor device, FIG. 7 is a sectional view of FIG. 6, and FIG. 8 is an external perspective view of another conventional example. 9th
The figure is a sectional side view of FIG. 1 ... Insulation case 2 ... Cylindrical part 3 ... Through hole 4 ... Positive characteristic thermistor element 5,6 ... Heat generating part 7 ... Through hole 8 ... Insulating sheet 9 ... Recess 11 ... Hole 12 ... … Spring terminal 13 …… flat terminal 14,15 …… vacant space 17 …… flat terminal electrode section 18 …… flat terminal lead section 20 …… spring terminal electrode section 21 …… spring terminal lead section 23 …… Metal plate 24 …… Claw piece
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中沢 篤雄 京都府長岡京市天神２丁目26番10号 株式 会社村田製作所内 (56)参考文献 特開 平３−64883（ＪＰ，Ａ) 実開 昭59−125089（ＪＰ，Ｕ) 実開 昭62−129794（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Atsushi Nakazawa 2 26-10 Tenjin Tenjin, Nagaokakyo-shi, Kyoto Murata Manufacturing Co., Ltd. (56) Reference JP-A-3-64883 (JP, A) -125089 (JP, U) Actually opened 62-129794 (JP, U)
Claims (1)
おいて凹部が形成され、この凹部内に上面から下面に貫
通した貫通孔を有する筒部が形成されているとともに、
正特性サーミスタ素子およびこの正特性サーミスタ素子
に接続する端子の電極部が納入される下面側に開口した
孔部と端子のリード部が納入される下面側に開口した空
所が連通して凹設された絶縁ケースと、 この絶縁ケースの孔部に納入された正特性サーミスタ素
子と、 この正特性サーミスタ素子を孔部において電極部で挟持
し、リード部が前記空所に納入された端子と、 前記絶縁ケースの凹部にはめ込まれ、下面側の前記開口
部を密閉する絶縁シートと、 前記絶縁ケースの上面に取り付けられ、爪片によって絶
縁ケースと絶縁シートを一体に保持している金属板とか
らなり、 前記絶縁ケースの筒部内周面及び前記金属板の絶縁ケー
ス上面に位置する部分を発熱部としたことを特徴とする
正特性サーミスタ装置。1. A lower surface is defined as an opening, and a recess is formed in the opening with a step, and a cylindrical portion having a through hole penetrating from the upper surface to the lower surface is formed in the recess.
A hole opened on the lower surface side where the positive temperature coefficient thermistor element and the electrode part of the terminal connected to this positive temperature coefficient thermistor element are delivered, and a cavity opened on the lower surface side where the terminal lead is delivered are communicated and recessed. The insulated case, the positive characteristic thermistor element delivered to the hole of the insulating case, the positive characteristic thermistor element sandwiched between the electrodes in the hole, and the lead portion and the terminal delivered to the void, From an insulating sheet that fits in the recess of the insulating case and seals the opening on the lower surface side, and a metal plate that is attached to the upper surface of the insulating case and integrally holds the insulating case and the insulating sheet by a claw piece. The positive temperature coefficient thermistor device, wherein the inner peripheral surface of the insulating case and the portion of the metal plate located on the upper surface of the insulating case are heat generating parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32702889A JPH0831353B2 (en) | 1989-12-15 | 1989-12-15 | PTC thermistor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32702889A JPH0831353B2 (en) | 1989-12-15 | 1989-12-15 | PTC thermistor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03187178A JPH03187178A (en) | 1991-08-15 |
| JPH0831353B2 true JPH0831353B2 (en) | 1996-03-27 |
Family
ID=18194504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32702889A Expired - Fee Related JPH0831353B2 (en) | 1989-12-15 | 1989-12-15 | PTC thermistor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0831353B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2272795B (en) * | 1991-06-26 | 1995-07-12 | Tdk Corp | Positive characteristic thermistor device |
| JPH0623205U (en) * | 1992-08-27 | 1994-03-25 | 株式会社村田製作所 | PTC thermistor device |
| US6411776B1 (en) | 1997-06-18 | 2002-06-25 | Dbk Espana, S.A. | Electric heating device with emission of active substances |
| KR200201398Y1 (en) * | 2000-04-03 | 2000-11-01 | 차세환 | Power thermistor for microwave oven |
-
1989
- 1989-12-15 JP JP32702889A patent/JPH0831353B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03187178A (en) | 1991-08-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |