KR100254860B1 - Applied method of enamel coating wire for nct lead wire and ntc thermistor - Google Patents

Applied method of enamel coating wire for nct lead wire and ntc thermistor Download PDF

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KR100254860B1
KR100254860B1 KR1019970072860A KR19970072860A KR100254860B1 KR 100254860 B1 KR100254860 B1 KR 100254860B1 KR 1019970072860 A KR1019970072860 A KR 1019970072860A KR 19970072860 A KR19970072860 A KR 19970072860A KR 100254860 B1 KR100254860 B1 KR 100254860B1
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free ends
enamel
shape
wire
enamel coating
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KR1019970072860A
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Korean (ko)
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KR19990053257A (en
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박희법
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박희완
고려전자주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1413—Terminals or electrodes formed on resistive elements having negative temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • H01C7/041—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient formed as one or more layers or coatings

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

PURPOSE: An NTC thermistor using enamel-based lead wires and a manufacturing method of the same are provided to automatize all processes such as a feeding process which feeds U-shape enamel lines to an endless tape with constant intervals, a device inserting process and a packing process, thereby reducing manufacturing costs and enhancing productivity. CONSTITUTION: A plurality of U-shape enamel lines are aligned on an endless base tape and then are fixed with constant intervals by an adhesive tape. Then, enamel coating of both free ends(18,18') are removed and then the both free ends are bended into X-shape. Next, a device(20) is inserted between the X-shape crossed free ends and the device(20) and both free ends are soldered. Then, the soldered portion is surrounded by a molding(22). That is, one ends of both lead wires(L1L2) composed of an enamel line is fixed by X-shape with the device(20) and is packed with a molding(22).

Description

에나멜계 리이드와이어를 이용한 NTC 써미스터 및 그 제조방법NTC thermistor using enameled lead wire and its manufacturing method

본 발명은 온도자동제어의 검출부나 각종회로의 온도 보상 등에 널리 사용되는 NTC 써미스터에 관한 것으로 보다 구체적으로는 에나멜계로 피복된 리이드와이어를 이용한 NTC 써미스터 및 그 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to NTC thermistors that are widely used for detecting temperature automatic control, temperature compensation of various circuits, and more particularly, to NTC thermistors using enameled lead wires and a method of manufacturing the same.

NTC 써미스터는 온도가 증가하면 전기저항이 감소되는 반도체회로소자로서 망간, 코발트, 니켈, 구리, 철, 알루미늄 및 실리콘 등과 같은 전이금속산화물을 혼합, 소결(燒結)하여 만들어지는 것인 바, 제조비용이 저렴하고 비교적 신뢰성이 우수하여서 온도검출 센서로 널리 사용되어 왔었다.NTC thermistor is a semiconductor circuit device whose electrical resistance decreases with increasing temperature. It is made by mixing and sintering transition metal oxides such as manganese, cobalt, nickel, copper, iron, aluminum and silicon. This inexpensive and relatively high reliability has been widely used as a temperature detection sensor.

그러나 써미스터의 재료인 전이금속산화물의 표면이 대기와 접촉시 강한 촉매작용을 하는 것이어서 써미스터 자체가 상온에서 변화될 뿐 아니라 고온, 다습한 사용환경하에서는 소자내부 및 전극의 접촉상태에서 열화(劣化)가 발생하는 까닭에 청정실험실이나 특수한 온도측정용으로 사용하는 경우를 제외하고는 종래에는 피복되지 않은 상태의 2개의 리이드와이어가 양쪽에 고정된 소자를 페놀수지나 에폭시수지와 같은 합성수지로 패킹(packing)하거나 유리 속에 봉입하여서 몰딩 처리한 것을 사용했었고, NTC 써미스터의 크기가 작을 수록 2개의 리이드와이어간의 간격이 좁아지기 마련이므로 사용중 수분이나 먼지 등에 의해서 합선이 발생하여 작동불량이 초래되는 것을 방지하기 위하여 리이드와이어의 자유단쪽으로부터 내습성, 내부식성 및 내화학성과 절연성이 좋은 튜브를 끼워서 제조하거나 상기 튜브와 같은 재질로 된 즉, 통상의 피복전선형 리이드와이어를 이용하여 제조해 왔었다.However, since the surface of the transition metal oxide, which is the material of the thermistor, acts as a strong catalyst when it comes into contact with the atmosphere, the thermistor itself is not only changed at room temperature but also deteriorated in the contact state inside the device and the electrode under high temperature and humidity conditions. Except for use in clean laboratories or for special temperature measurement, conventionally, two unwired lead wires are packed with a synthetic resin such as phenol or epoxy resin. Or molded by encapsulating it in glass, and the smaller the size of the NTC thermistor, the smaller the gap between two lead wires. Moisture resistance, corrosion resistance and fire resistance from free end of wire It has been manufactured by inserting a tube having good observability and insulation, or using the same material as the tube, that is, using a conventional coated wire lead wire.

그러나 튜브를 사용할 경우에는 리이드와이어에 튜브를 끼우는 것도 어려울 뿐 아니라 소자의 몰딩 부분과 튜브사이에 리이드와이어의 일부분이 노출되기 마련이어서 써미스터 전체의 내습성, 내부식성 및 내화학성과 절연성을 근본적으로 해결할 수 없었다.However, when using a tube, it is not only difficult to insert the tube on the lead wire, but also a portion of the lead wire is exposed between the molding part of the device and the tube, thereby fundamentally solving the moisture resistance, corrosion resistance, chemical resistance, and insulation of the thermistor. Could not.

그리고 피복전선형 리이드와이어를 사용하는 경우에는 튜브형 피복을 제거하여서 소자와 납땜해주어야만 까닭에 제조공정의 자동화를 통한 생산성향상과 제조비용의 절감효과를 크게 기대할 수 없는 문제점이 있었다.In addition, in the case of using the coated wire type lead wire, the tubular sheath has to be removed and soldered to the device, thereby increasing the productivity and reducing the manufacturing cost through automation of the manufacturing process.

또 대한민국특허공개번호제96-38365호에는 다수개의 요홈이 형성된 지그의 각 요홈에 다수개의 리이드와이어를 수용시킨 상태에서 써미스터 센서를 제조하는 방법에 제시되어 있는데 지그의 크기가 한정될 수 밖에 없는 것이어서 생산성을 크게 향상시켜 줄 수 없는 것일 뿐 아니라 앞에서 설명한 종래 써미스터의 제반문제점을 해결할 수도 없는 것이었다.In addition, the Republic of Korea Patent Publication No. 96-38365 is presented in the method for manufacturing the thermistor sensor in a state in which a plurality of lead wires are accommodated in each groove of the jig in which a plurality of grooves are formed, but the size of the jig is bound to be limited. Not only did it not significantly improve productivity, it also could not solve all the problems of the conventional thermistors described above.

본 발명자는 이와 같은 종래기술의 제반문제점을 해결하기 위하여 예의 검토해 본 바, “U”자형 에나멜계 리드와이어를 엔드리스(endless)이송테이프로 급송하고, 에나멜리드와이어의 양쪽자유단부쪽에 있는 에나멜피복층을 제거하여 양쪽 자유단부를 “X”자형으로 교차되게 구부리고 이 교차부위사이로 소자를 삽입한 후 납땜을 하여 소자와 에나멜계리드와이어를 고정한 다음 패킹하여 몰딩 처리하고 “U”자형 에나멜리드와이어의 연결고리 부위를 절단한 다음 자유단으로 절단된 에나멜계리드와이어의 단부에 있는 에나멜피복층을 제거하면서 써미스터를 제조할 수 만 있다면 혹독한 사용조건 하에서도 작동신뢰성이 매우 우수한 써미스터를 저렴한 비용으로 대량생산할 수 있는 것임을 알게 되어서 본 발명을 완성하기에 이르렀다.In order to solve the above problems of the prior art, the inventors of the present invention have studied diligently, and the “U” shaped enameled lead wires are fed with an endless transfer tape, and the enamel coated layers on both free ends of the enamelled wires are fed. Remove and bend both free ends to cross each other in an “X” shape, insert the device between these intersections, and solder it to fix the device and the enameled lead wire. Then, pack and mold and connect the “U” shaped enameled wire. If the thermistor can be manufactured by removing the enamel coating layer at the end of the enameled lead wire cut at the end after free cutting, it is possible to mass-produce the thermistor with excellent operational reliability under the severe use conditions at low cost. It has come to know and complete the present invention.

따라서 본 발명의 목적은 에나멜선을 리이드와이어로 하는 NTC 써미스터 및 그 제조방법을 제공하는데 있다.Accordingly, an object of the present invention is to provide an NTC thermistor having an enameled wire as a lead wire and a manufacturing method thereof.

제1(a)~(f)도는 본 발명에 의한 NTC 써미스터의 제조공정도.1 (a) to (f) are manufacturing process diagrams of NTC thermistors according to the present invention.

제2도는 본 발명에 의한 NTC 써미스터의 사시도.2 is a perspective view of an NTC thermistor according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : “U”자형 에나멜선 18,18′ : 양쪽자유단부10: “U” enameled wire 18,18 ′: both free ends

20 : 소자 22 : 몰딩부20 device 22 molding part

26, 26′ : 양쪽하부자유단부26, 26 ′: Both lower free ends

본 발명은 제1(a)~(f)도에 예시한 바와 같은 공정순으로 제2도에 예시한 바와 같은 NTC 써미스터(T)를 제조하는 것이다.The present invention manufactures NTC thermistors (T) as illustrated in FIG. 2 in the order of steps as illustrated in FIGS. 1 (a) to (f).

제1(a)도에는 “U”자형으로 굽혀진 여러 개의 에나멜선(10)을 엔드리스(endless) 베이스테이프(12)위에 정렬시키고 그 위에 접착테이프(14)를 붙여서 “U”자형 에나멜선(10)들을 일정한 간격이 유지되도록 고정시키고, 표현이 생략된 급송장치의 휠에 있는 포올이 삽입되는 구멍(16)을 상기 “U”자형 에나멜선(10)들을 사이에 형성된 형태가 표현되어 있다.In FIG. 1 (a), a plurality of enameled wires 10 bent in an “U” shape are arranged on an endless baystrip 12 and an adhesive tape 14 is attached thereto to attach a “U” enameled wire ( 10) is fixed to maintain a constant interval, the hole 16 is inserted between the "U" -shaped enamel wire 10 is inserted into the hole 16 is inserted in the wheel of the feeder is omitted.

제1(b)도에는 상기 “U”자형 에나멜선(10)의 양쪽자유단부(18),(18′)쪽에 있는 에나멜 피복층을 제거한 상태가 표현되어 있다.In FIG. 1 (b), the state where the enamel coating layers on both free ends 18 and 18 'of the "U" -shaped enamelled wire 10 are removed is represented.

제1(c)도에는 에나멜 피복층이 제거된 상기 “U”자형에나멜선(10)의 양쪽자유단부(18),(18′)를 “X”자형으로 교차되도록 구부린 상태가 표현되어 있다.In FIG. 1 (c), a state in which both free ends 18 and 18 'of the “U” enamel line 10 from which the enamel coating layer has been removed is bent so as to cross the “X” shape is represented.

제1(d)도에는 상기 “X”자형으로 교차되게 구부려진 “U”자형 에나멜선(10)의 양쪽 자유단부(18)와 자유단부(18′)사이로 소자(20)를 삽입시키고 이 소자(20)와, 이 소자(20)의 앞, 뒷쪽에 있는 양쪽자유단부(18),(18′)를 납땜하여 고정시킨 상태가 표현되어 있다.In FIG. 1 (d), an element 20 is inserted between both free ends 18 and free ends 18 'of the “U” -shaped enameled wire 10 bent to cross the “X” shape. (20) and a state where both free end portions 18, 18 'at the front and the rear of the element 20 are soldered and fixed are represented.

제1(e)도에는 상기 소자(20)와, “U”자형 에나멜선(10)의 양쪽자유단부(18),(18′)가 납땜으로 고정된 부위를 통상의 방법으로 수지로 패킹하여 몰딩부(22)로 감싼 형태가 표현되어 있다.In FIG. 1 (e), a portion in which the device 20 and both free ends 18 and 18 'of the “U” -shaped enamelled wire 10 are fixed by soldering is packed with resin in a conventional manner. The form wrapped by the molding part 22 is represented.

제1(f)도에는 상기 “U”자형 에나멜선(10)의 연결고리부위(24)를 절단하여 자유단으로 된 양쪽하부자유단부(26),(26′)에 있는 에나멜 피복층을 제거한 상태가 표현되어 있다.1 (f) is a state in which the enamel coating layer at both lower free ends 26 and 26 'formed as a free end is removed by cutting the connecting part 24 of the “U” -shaped enamelled wire 10. Is represented.

이와 같은 공정을 거친 후 최종적인 품질검사를 실시하여 제2도에 예시한 바와 같이 에나멜선(10)으로 이루어진 양쪽 리이드와이어(L1),(L2)의 한쪽 끝부분이 소자(20)와 “X”자형으로 고정되어 있고 몰딩부(22)로 패킹되어 있는 NTC 써미스터(T)를 얻는 것이다.In this step the rough after the final quality check to performed in a second diagram the one end portion of the enameled wire (10) both lead wires (L 1), (L 2) consisting of elements 20 as illustrated in, such as The NTC thermistor T, which is fixed in an “X” shape and packed with the molding part 22, is obtained.

본 발명에 있어서, 에나멜선(10)의 양쪽자유단부(18),(18′)와 양쪽하부자유단부(26),(26′)쪽에 있는 에나멜피복층을 제거해주는 이유는 에나멜계의 용융온도가 약 160°∼400℃ 이어서 납땜용 합금의 용융온도(약 182℃)보다 높으므로 납땜하기 전에 에나멜피복층을 먼저 제거해주는 것이 납땜을 정확하면서도 용이하게 실시할 수 있기 때문이다.In the present invention, the reason for removing the enamel coating layer on both free ends 18, 18 'and both bottom free ends 26, 26' of the enameled wire 10 is that the enamel melting temperature is Since the temperature is higher than the melting temperature of the brazing alloy (about 182 ° C) of about 160 ° to 400 ° C, the removal of the enamel coating layer before soldering can be performed accurately and easily.

따라서 “U”자형 에나멜선(10)의 양쪽자유단부(18),(18′)를 “X”자형으로 구부려주기 전에 약 380∼420℃정도로 용융된 납용액을 이동하는 “U”자형에나멜선(10)의 양쪽자유단부(18),(18′)의 위쪽에서 떨어트리는 방식으로 소자(20)와 접촉될 부분에 있는 에나멜층을 제거해주는 것이 바람직하다. 그리고 사용시 인쇄회로기판 또는 다른 기기와 양쪽하부자유단부(26),(26′)도 상기한 바와 같은 에나멜층 제거방식으로 제거해준다.Therefore, before bending both free ends 18 and 18 'of the "U" enameled wire 10 into an "X" shape, the "U" enameled wire which moves the molten lead solution to about 380-420 degreeC It is preferable to remove the enamel layer at the portion to be in contact with the element 20 by dropping it above both free ends 18, 18 'of (10). In use, the printed circuit board or other device and both lower free ends 26 and 26 'are also removed by the enamel layer removing method as described above.

이와 같은 본 발명은 “U”자형 에나멜선(10)을 일정한 간격으로 엔드레스로 급송하고, 소자(20)의 삽입과 납땜 그리고 패킹하는 과정을 모두 전자동화 할 수 있는 것이므로 저렴한 비용과 높은 생산성을 NTC 써미스터를 제조할 수 있다.In the present invention as described above, the U-shaped enamelled wire 10 may be fed to the endless at regular intervals, and the process of fully inserting, soldering, and packing the element 20 may be fully automated. Thermistors can be manufactured.

특히, “U”자형에나멜선(10)의 양쪽자유단부(18),(18′)를 “X”자형으로 교차시키고 이 교차부위 속으로 소자(20)를 삽입, 납땜한 것이기 때문에 소자의 양쪽에 단순히 리이드와이어를 납땜했었던 종래 것에 비하여 소자와의 고정된 상태를 매우 견고하게 유지시켜 줄 수 있어서 물리적인 외력에 대한 큰 응력을 발휘할 수 있고, 리이드와이어(L1),(L2)가 절연성, 내습성, 내부식성 및 내화학성이 우수한 에나멜선으로 이루어진 것이므로 혹독한 사용환경하에서도 작동신뢰성이 우수하고 내구수명 이긴 장점이 있다.Particularly, since both free ends 18 and 18 'of the “U” enameled wire 10 are intersected in an “X” shape, and the element 20 is inserted and soldered into this intersection, both sides of the element are soldered. Compared to the conventional soldering of lead wires, it is possible to maintain the fixed state with the device very firmly, so that it can exert great stress against physical external force, and lead wires (L 1 ) and (L 2 ) are insulative. Because it is made of enameled wire with excellent moisture resistance, corrosion resistance and chemical resistance, it has the advantage of excellent operating reliability and durability life under severe use environment.

Claims (2)

“U”자형으로 굽혀진 여러개의 에나멜선(10)을 엔드리스베이스테이프(12)와 접착테이프(14)사이에 일정한 간격으로 부착시켜서 급송하고, 에나멜선(10)의 양쪽자유단부(18),(18′)쪽에 있는 에나멜피복층을 제거하며, 양쪽 자유단부(18),(18′)를 “X”자형으로 교차되도록 구부리고, 소자(20)를 상기 “X”자형으로 교차하는 양쪽자유단부(18),(18′)사이에 삽입, 납땜하며, 소자(20)와 양쪽자유단부(18),(18′)를 통상의 방법으로 패킹하여 몰딩처리한 다음 에나멜선(10)의 연결고리부위(24)를 절단하여 자유단으로된 양쪽 하부자유단부(26),(26′)에 있는 에나멜피복층을 제거함을 특징으로 하는 에나멜계 리이드와이어를 이용한 NTC 써미스터의 제조방법.A plurality of enameled wires 10 bent in a “U” shape are attached and fed at regular intervals between the endless bay taper 12 and the adhesive tape 14, and both free ends 18 of the enameled wires 10, Remove the enamel coating layer on the (18 ') side, and bend both free ends 18 and 18' to intersect in the shape of "X" and cross the element 20 in the "X" shape. 18), (18 ') is inserted and soldered, and the element 20 and both free ends 18, (18') are packed and molded in a conventional manner, and then the connecting portion of the enameled wire 10 is molded. (24) A method of manufacturing an NTC thermistor using an enamel lead wire, characterized by removing the enamel coating layers at both lower free ends (26) and (26 ') at the free ends. 리이드와이어(L1),(L2)가 에나멜선(10)으로 이루어져 있고, 소자(20)가 “X”자형으로 교차되게 굽혀진 리이드와이어(L1),(L2)의 한쪽끝부분에 있는 양쪽 자유자유단(18),(18′)사이에 삽입된 상태로 납땜되어 있고, 소자(20)와 양쪽자유단부(18),(18′)가 통상의 수지로 패킹되어 있으며, 리이드와이어(L1),(L2)의 다른 한쪽 끝부분에 있는 양쪽 하부자유단부(26),(26′)에 있는 에나멜피복층이 제거된 것임을 특징으로 하는 에나멜계 리이드와이어를 이용한 NTC 써미스터.One end of the lead wires (L 1) (L 2) that consists in enameled wire 10, the element lead wires (L 1) (L 2), binary (20) is bent to cross the "X" shaped Soldered in the state inserted between both free ends 18 and 18 'of the device, and the element 20 and both free ends 18 and 18' are packed with ordinary resin, and An NTC thermistor using an enamel lead wire, wherein the enamel coating layers at both lower free ends (26) and (26 ') at the other ends of the wires (L 1 ) and (L 2 ) are removed.
KR1019970072860A 1997-12-24 1997-12-24 Applied method of enamel coating wire for nct lead wire and ntc thermistor KR100254860B1 (en)

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