JPS626642Y2 - - Google Patents
Info
- Publication number
- JPS626642Y2 JPS626642Y2 JP14480281U JP14480281U JPS626642Y2 JP S626642 Y2 JPS626642 Y2 JP S626642Y2 JP 14480281 U JP14480281 U JP 14480281U JP 14480281 U JP14480281 U JP 14480281U JP S626642 Y2 JPS626642 Y2 JP S626642Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature coefficient
- positive temperature
- coefficient thermistor
- metal plate
- shaped part
- 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
Links
- 239000002184 metal Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Details Of Resistors (AREA)
- Thermistors And Varistors (AREA)
Description
【考案の詳細な説明】
本発明は小電力用正特性サーミスタの構造に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a low power positive temperature coefficient thermistor.
従来、小電力用ヒータとしての正特性サーミス
タは自己平衡形発熱体として賞用されており、そ
の構造は第１図に示すように正特性サーミスタ素
子１の片面に中央で分離して電極２ａ，２ｂを設
け、他面に電極３を設け、そして上記電極２ａ，
２ｂにそれぞれ外部引出リード線４ａ，４ｂを半
田付５し、さらに第２図に示すようにセラミツク
やプラスチツクシートなどの絶縁シート６を介し
て上記電極３に金属板７を接触させ、上記正特性
サーミスタ素子１、外部引出リード線４ａ，４ｂ
および絶縁シート６を被覆するように外装樹脂８
をコーテイングしていた。 Conventionally, positive temperature coefficient thermistors have been used as self-balancing heat generating elements for small power heaters, and their structure is as shown in FIG. 2b, an electrode 3 is provided on the other surface, and the electrodes 2a,
External lead wires 4a and 4b are soldered to 2b, respectively, and a metal plate 7 is brought into contact with the electrode 3 via an insulating sheet 6 such as a ceramic or plastic sheet as shown in FIG. Thermistor element 1, external lead wires 4a, 4b
and an exterior resin 8 to cover the insulation sheet 6.
was coated.
しかし、この構造では金属板７と絶縁シート６
との接着、また絶縁シート６と電極３との接着、
さらに外装樹脂８をコーテイングしなければなら
ず、多くの工数を必要としていた。 However, in this structure, the metal plate 7 and the insulating sheet 6
adhesion between the insulating sheet 6 and the electrode 3,
Furthermore, it was necessary to coat the exterior resin 8, which required a large number of man-hours.
本考案は上記の欠点を除去した安価に製造でき
る構造の小電力用正特性サーミスタを提供しよう
とするものである。 The present invention aims to provide a low power positive temperature coefficient thermistor which eliminates the above-mentioned drawbacks and has a structure that can be manufactured at low cost.
以下、本考案を第３図および第４図について説
明する。 Hereinafter, the present invention will be explained with reference to FIGS. 3 and 4.
本考案の構造は正特性サーミスタ素子１の片面
に中央で分離して電極２ａ，２ｂを設け、他面に
電極３を設け、そして上記電極２ａ，２ｂにそれ
ぞれ外部引出しリード線４ａ，４ｂを半田付５す
るところは上述の従来と同じであるが、第３図に
示すように外部引出リード線４ａ，４ｂを半田付
５された正特性サーミスタを流動浸漬法によつて
エポキシ樹脂９をコーテイングする。この特徴は
金属板と接触する電極３の面であり、この面に均
一に外装樹脂を塗布することによつて、絶縁耐圧
のバラツキを小さくすることができるので、外装
樹脂の厚みを薄くして絶縁耐圧を向上させ、さら
に金属板への熱抵抗を小さくできる点にあり、均
一にコーテイングできればエポキシ樹脂以外の樹
脂でもよい。 The structure of the present invention is that electrodes 2a and 2b are provided on one side of a positive temperature coefficient thermistor element 1, separated at the center, and an electrode 3 is provided on the other side, and external lead wires 4a and 4b are soldered to the electrodes 2a and 2b, respectively. Attachment 5 is the same as the conventional method described above, but as shown in FIG. 3, a positive temperature coefficient thermistor with external lead wires 4a and 4b soldered 5 is coated with epoxy resin 9 by a fluidized dipping method. . This feature is the surface of the electrode 3 that comes into contact with the metal plate, and by uniformly applying the exterior resin to this surface, variations in dielectric strength can be reduced, so the thickness of the exterior resin can be reduced. Resins other than epoxy resins can be used as long as they can be coated uniformly, since they can improve dielectric strength and reduce thermal resistance to the metal plate.
このようにコーテイングした正特性サーミスタ
素子を第４図に示す金属板１０の一部にコの字状
部１０ａを設けた位置に接着剤１１で取付ける。
これを加熱物体にネジなどで取付けるが、従来コ
の字状部がない金属板においては、取付けるとき
にタワミが発生した場合、従来構造では正特性サ
ーミスタが剥れやすい欠点があつたが、本考案で
はコの字状部を設けてタワミに対する対策を取
り、さらにコの字状部にも接着剤が付着するため
に接着強度が向上する利点があり、実用的価値大
なるものである。 The PTC thermistor element coated in this manner is attached with an adhesive 11 to a part of the metal plate 10 shown in FIG. 4 at a position where a U-shaped portion 10a is provided.
The PTC thermistor is attached to the heated object with screws, etc., but in the conventional structure, the PTC thermistor tends to peel off when the metal plate does not have a U-shaped part. The idea is to provide a U-shaped portion to prevent deflection, and since the adhesive adheres to the U-shaped portion as well, it has the advantage of improving adhesive strength, and has great practical value.
第１図は従来の正特性サーミスタの断面図、第
２図は金属板に取付けた従来の正特性サーミスタ
の一実施例の断面図、第３図は本考案の正特性サ
ーミスタの断面図、第４図は本考案の金属板に取
付けた正特性サーミスタの一実施例の斜視図であ
る。
１：正特性サーミスタ素子、２ａ，２ｂ，３：
電極、４ａ，４ｂ：外部引出しリード線、５：半
田、９：エポキシ樹脂などの外装樹脂、１０：金
属板、１０ａ：金属板１０の一部に設けたコの字
状部、１１：接着剤。
Fig. 1 is a sectional view of a conventional PTC thermistor, Fig. 2 is a sectional view of an embodiment of a conventional PTC thermistor attached to a metal plate, and Fig. 3 is a sectional view of the PTC thermistor of the present invention. FIG. 4 is a perspective view of an embodiment of a positive temperature coefficient thermistor attached to a metal plate according to the present invention. 1: Positive temperature coefficient thermistor element, 2a, 2b, 3:
Electrode, 4a, 4b: External lead wire, 5: Solder, 9: Exterior resin such as epoxy resin, 10: Metal plate, 10a: U-shaped part provided in a part of metal plate 10, 11: Adhesive .
Claims (1)
割形成した電極と、他面に形成した電極と、上記
２分割形成した電極にそれぞれ半田付した外部引
出リード線とを備えた正特性サーミスタに均一な
厚みでコーテイングした外装樹脂と、一部にコの
字状部を形成した金属板よりなり、上記正特性サ
ーミスタをコの字状部に接着固定してなる小電力
用正特性サーミスタ。 A positive temperature coefficient thermistor that includes a positive temperature coefficient thermistor element, an electrode formed in two parts on one side of the element, an electrode formed in the other face, and an external lead wire soldered to each of the two divided electrodes. A positive temperature coefficient thermistor for low power use, which is made of an exterior resin coated with a thickness of about 100 mm, and a metal plate with a U-shaped part formed thereon, and the above-mentioned positive temperature coefficient thermistor is adhesively fixed to the U-shaped part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14480281U JPS5849401U (en) | 1981-09-28 | 1981-09-28 | Positive characteristic thermistor for low power use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14480281U JPS5849401U (en) | 1981-09-28 | 1981-09-28 | Positive characteristic thermistor for low power use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5849401U JPS5849401U (en) | 1983-04-04 |
| JPS626642Y2 true JPS626642Y2 (en) | 1987-02-16 |
Family
ID=29937754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14480281U Granted JPS5849401U (en) | 1981-09-28 | 1981-09-28 | Positive characteristic thermistor for low power use |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5849401U (en) |
-
1981
- 1981-09-28 JP JP14480281U patent/JPS5849401U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5849401U (en) | 1983-04-04 |
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